1//===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Common function interceptors for tools like AddressSanitizer,
10// ThreadSanitizer, MemorySanitizer, etc.
11//
12// This file should be included into the tool's interceptor file,
13// which has to define its own macros:
14// COMMON_INTERCEPTOR_ENTER
15// COMMON_INTERCEPTOR_ENTER_NOIGNORE
16// COMMON_INTERCEPTOR_READ_RANGE
17// COMMON_INTERCEPTOR_WRITE_RANGE
18// COMMON_INTERCEPTOR_INITIALIZE_RANGE
19// COMMON_INTERCEPTOR_DIR_ACQUIRE
20// COMMON_INTERCEPTOR_FD_ACQUIRE
21// COMMON_INTERCEPTOR_FD_RELEASE
22// COMMON_INTERCEPTOR_FD_ACCESS
23// COMMON_INTERCEPTOR_SET_THREAD_NAME
24// COMMON_INTERCEPTOR_DLOPEN
25// COMMON_INTERCEPTOR_ON_EXIT
26// COMMON_INTERCEPTOR_SET_PTHREAD_NAME
27// COMMON_INTERCEPTOR_HANDLE_RECVMSG
28// COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED
29// COMMON_INTERCEPTOR_MMAP_IMPL
30// COMMON_INTERCEPTOR_MUNMAP_IMPL
31// COMMON_INTERCEPTOR_COPY_STRING
32// COMMON_INTERCEPTOR_STRNDUP_IMPL
33// COMMON_INTERCEPTOR_STRERROR
34//===----------------------------------------------------------------------===//
35
36#include <stdarg.h>
37
38#include "interception/interception.h"
39#include "sanitizer_addrhashmap.h"
40#include "sanitizer_dl.h"
41#include "sanitizer_errno.h"
42#include "sanitizer_placement_new.h"
43#include "sanitizer_platform_interceptors.h"
44#include "sanitizer_symbolizer.h"
45#include "sanitizer_tls_get_addr.h"
46
47#if SANITIZER_INTERCEPTOR_HOOKS
48#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...) f(__VA_ARGS__);
49#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...) \
50 SANITIZER_INTERFACE_WEAK_DEF(void, f, __VA_ARGS__) {}
51#else
52#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...)
53#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...)
54
55#endif // SANITIZER_INTERCEPTOR_HOOKS
56
57#if SANITIZER_WINDOWS && !defined(va_copy)
58#define va_copy(dst, src) ((dst) = (src))
59#endif // _WIN32
60
61#if SANITIZER_FREEBSD
62#define pthread_setname_np pthread_set_name_np
63#define inet_aton __inet_aton
64#define inet_pton __inet_pton
65#define iconv __bsd_iconv
66#endif
67
68#if SANITIZER_NETBSD
69#define clock_getres __clock_getres50
70#define clock_gettime __clock_gettime50
71#define clock_settime __clock_settime50
72#define ctime __ctime50
73#define ctime_r __ctime_r50
74#define devname __devname50
75#define fgetpos __fgetpos50
76#define fsetpos __fsetpos50
77#define fstatvfs __fstatvfs90
78#define fstatvfs1 __fstatvfs190
79#define fts_children __fts_children60
80#define fts_close __fts_close60
81#define fts_open __fts_open60
82#define fts_read __fts_read60
83#define fts_set __fts_set60
84#define getitimer __getitimer50
85#define getmntinfo __getmntinfo90
86#define getpwent __getpwent50
87#define getpwnam __getpwnam50
88#define getpwnam_r __getpwnam_r50
89#define getpwuid __getpwuid50
90#define getpwuid_r __getpwuid_r50
91#define getutent __getutent50
92#define getutxent __getutxent50
93#define getutxid __getutxid50
94#define getutxline __getutxline50
95#define getvfsstat __getvfsstat90
96#define pututxline __pututxline50
97#define glob __glob30
98#define gmtime __gmtime50
99#define gmtime_r __gmtime_r50
100#define localtime __locatime50
101#define localtime_r __localtime_r50
102#define mktime __mktime50
103#define lstat __lstat50
104#define opendir __opendir30
105#define readdir __readdir30
106#define readdir_r __readdir_r30
107#define scandir __scandir30
108#define setitimer __setitimer50
109#define setlocale __setlocale50
110#define shmctl __shmctl50
111#define sigaltstack __sigaltstack14
112#define sigemptyset __sigemptyset14
113#define sigfillset __sigfillset14
114#define sigpending __sigpending14
115#define sigprocmask __sigprocmask14
116#define sigtimedwait __sigtimedwait50
117#define stat __stat50
118#define statvfs __statvfs90
119#define statvfs1 __statvfs190
120#define time __time50
121#define times __times13
122#define unvis __unvis50
123#define wait3 __wait350
124#define wait4 __wait450
125extern const unsigned short *_ctype_tab_;
126extern const short *_toupper_tab_;
127extern const short *_tolower_tab_;
128#endif
129
130#if SANITIZER_MUSL && \
131 (defined(__i386__) || defined(__arm__) || SANITIZER_MIPS32 || SANITIZER_PPC32)
132// musl 1.2.0 on existing 32-bit architectures uses new symbol names for the
133// time-related functions that take 64-bit time_t values. See
134// https://musl.libc.org/time64.html
135#define adjtime __adjtime64
136#define adjtimex __adjtimex_time64
137#define aio_suspend __aio_suspend_time64
138#define clock_adjtime __clock_adjtime64
139#define clock_getres __clock_getres_time64
140#define clock_gettime __clock_gettime64
141#define clock_nanosleep __clock_nanosleep_time64
142#define clock_settime __clock_settime64
143#define cnd_timedwait __cnd_timedwait_time64
144#define ctime __ctime64
145#define ctime_r __ctime64_r
146#define difftime __difftime64
147#define dlsym __dlsym_time64
148#define fstatat __fstatat_time64
149#define fstat __fstat_time64
150#define ftime __ftime64
151#define futimens __futimens_time64
152#define futimesat __futimesat_time64
153#define futimes __futimes_time64
154#define getitimer __getitimer_time64
155#define getrusage __getrusage_time64
156#define gettimeofday __gettimeofday_time64
157#define gmtime __gmtime64
158#define gmtime_r __gmtime64_r
159#define localtime __localtime64
160#define localtime_r __localtime64_r
161#define lstat __lstat_time64
162#define lutimes __lutimes_time64
163#define mktime __mktime64
164#define mq_timedreceive __mq_timedreceive_time64
165#define mq_timedsend __mq_timedsend_time64
166#define mtx_timedlock __mtx_timedlock_time64
167#define nanosleep __nanosleep_time64
168#define ppoll __ppoll_time64
169#define pselect __pselect_time64
170#define pthread_cond_timedwait __pthread_cond_timedwait_time64
171#define pthread_mutex_timedlock __pthread_mutex_timedlock_time64
172#define pthread_rwlock_timedrdlock __pthread_rwlock_timedrdlock_time64
173#define pthread_rwlock_timedwrlock __pthread_rwlock_timedwrlock_time64
174#define pthread_timedjoin_np __pthread_timedjoin_np_time64
175#define recvmmsg __recvmmsg_time64
176#define sched_rr_get_interval __sched_rr_get_interval_time64
177#define select __select_time64
178#define semtimedop __semtimedop_time64
179#define sem_timedwait __sem_timedwait_time64
180#define setitimer __setitimer_time64
181#define settimeofday __settimeofday_time64
182#define sigtimedwait __sigtimedwait_time64
183#define stat __stat_time64
184#define stime __stime64
185#define thrd_sleep __thrd_sleep_time64
186#define timegm __timegm_time64
187#define timerfd_gettime __timerfd_gettime64
188#define timerfd_settime __timerfd_settime64
189#define timer_gettime __timer_gettime64
190#define timer_settime __timer_settime64
191#define timespec_get __timespec_get_time64
192#define time __time64
193#define utimensat __utimensat_time64
194#define utimes __utimes_time64
195#define utime __utime64
196#define wait3 __wait3_time64
197#define wait4 __wait4_time64
198#endif
199
200#ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE
201#define COMMON_INTERCEPTOR_INITIALIZE_RANGE(p, size) {}
202#endif
203
204#ifndef COMMON_INTERCEPTOR_UNPOISON_PARAM
205#define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) {}
206#endif
207
208#ifndef COMMON_INTERCEPTOR_FD_ACCESS
209#define COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd) {}
210#endif
211
212#ifndef COMMON_INTERCEPTOR_HANDLE_RECVMSG
213#define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) ((void)(msg))
214#endif
215
216#ifndef COMMON_INTERCEPTOR_FILE_OPEN
217#define COMMON_INTERCEPTOR_FILE_OPEN(ctx, file, path) {}
218#endif
219
220#ifndef COMMON_INTERCEPTOR_FILE_CLOSE
221#define COMMON_INTERCEPTOR_FILE_CLOSE(ctx, file) {}
222#endif
223
224#ifndef COMMON_INTERCEPTOR_LIBRARY_LOADED
225#define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle) {}
226#endif
227
228#ifndef COMMON_INTERCEPTOR_LIBRARY_UNLOADED
229#define COMMON_INTERCEPTOR_LIBRARY_UNLOADED() {}
230#endif
231
232#ifndef COMMON_INTERCEPTOR_ENTER_NOIGNORE
233#define COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, ...) \
234 COMMON_INTERCEPTOR_ENTER(ctx, __VA_ARGS__)
235#endif
236
237#ifndef COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED
238#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED (0)
239#endif
240
241#define COMMON_INTERCEPTOR_READ_STRING(ctx, s, n) \
242 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s), \
243 common_flags()->strict_string_checks ? (internal_strlen(s)) + 1 : (n) )
244
245#ifndef COMMON_INTERCEPTOR_DLOPEN
246#define COMMON_INTERCEPTOR_DLOPEN(filename, flag) \
247 ({ CheckNoDeepBind(filename, flag); REAL(dlopen)(filename, flag); })
248#endif
249
250#ifndef COMMON_INTERCEPTOR_GET_TLS_RANGE
251#define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end) *begin = *end = 0;
252#endif
253
254#ifndef COMMON_INTERCEPTOR_ACQUIRE
255#define COMMON_INTERCEPTOR_ACQUIRE(ctx, u) {}
256#endif
257
258#ifndef COMMON_INTERCEPTOR_RELEASE
259#define COMMON_INTERCEPTOR_RELEASE(ctx, u) {}
260#endif
261
262#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_START
263#define COMMON_INTERCEPTOR_USER_CALLBACK_START() {}
264#endif
265
266#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_END
267#define COMMON_INTERCEPTOR_USER_CALLBACK_END() {}
268#endif
269
270#ifdef SANITIZER_NLDBL_VERSION
271#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \
272 COMMON_INTERCEPT_FUNCTION_VER(fn, SANITIZER_NLDBL_VERSION)
273#else
274#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \
275 COMMON_INTERCEPT_FUNCTION(fn)
276#endif
277
278#if SANITIZER_GLIBC
279// If we could not find the versioned symbol, fall back to an unversioned
280// lookup. This is needed to work around a GLibc bug that causes dlsym
281// with RTLD_NEXT to return the oldest versioned symbol.
282// See https://sourceware.org/bugzilla/show_bug.cgi?id=14932.
283// For certain symbols (e.g. regexec) we have to perform a versioned lookup,
284// but that versioned symbol will only exist for architectures where the
285// oldest Glibc version pre-dates support for that architecture.
286// For example, regexec@GLIBC_2.3.4 exists on x86_64, but not RISC-V.
287// See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98920.
288#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \
289 COMMON_INTERCEPT_FUNCTION_VER_UNVERSIONED_FALLBACK(fn, ver)
290#else
291#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \
292 COMMON_INTERCEPT_FUNCTION(fn)
293#endif
294
295#ifndef COMMON_INTERCEPTOR_MMAP_IMPL
296#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, \
297 off) \
298 { return REAL(mmap)(addr, sz, prot, flags, fd, off); }
299#endif
300
301#ifndef COMMON_INTERCEPTOR_MUNMAP_IMPL
302#define COMMON_INTERCEPTOR_MUNMAP_IMPL(ctx, addr, sz) \
303 { return REAL(munmap)(addr, sz); }
304#endif
305
306#ifndef COMMON_INTERCEPTOR_COPY_STRING
307#define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) {}
308#endif
309
310#ifndef COMMON_INTERCEPTOR_STRNDUP_IMPL
311#define COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size) \
312 COMMON_INTERCEPTOR_ENTER(ctx, strndup, s, size); \
313 uptr copy_length = internal_strnlen(s, size); \
314 char *new_mem = (char *)WRAP(malloc)(copy_length + 1); \
315 if (common_flags()->intercept_strndup) { \
316 COMMON_INTERCEPTOR_READ_STRING(ctx, s, Min(size, copy_length + 1)); \
317 } \
318 if (new_mem) { \
319 COMMON_INTERCEPTOR_COPY_STRING(ctx, new_mem, s, copy_length); \
320 internal_memcpy(new_mem, s, copy_length); \
321 new_mem[copy_length] = '\0'; \
322 } \
323 return new_mem;
324#endif
325
326#ifndef COMMON_INTERCEPTOR_STRERROR
327#define COMMON_INTERCEPTOR_STRERROR() {}
328#endif
329
330struct FileMetadata {
331 // For open_memstream().
332 char **addr;
333 SIZE_T *size;
334};
335
336struct CommonInterceptorMetadata {
337 enum {
338 CIMT_INVALID = 0,
339 CIMT_FILE
340 } type;
341 union {
342 FileMetadata file;
343 };
344};
345
346#if SI_POSIX
347typedef AddrHashMap<CommonInterceptorMetadata, 31051> MetadataHashMap;
348
349static MetadataHashMap *interceptor_metadata_map;
350
351UNUSED static void SetInterceptorMetadata(__sanitizer_FILE *addr,
352 const FileMetadata &file) {
353 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr);
354 CHECK(h.created());
355 h->type = CommonInterceptorMetadata::CIMT_FILE;
356 h->file = file;
357}
358
359UNUSED static const FileMetadata *GetInterceptorMetadata(
360 __sanitizer_FILE *addr) {
361 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr,
362 /* remove */ false,
363 /* create */ false);
364 if (addr && h.exists()) {
365 CHECK(!h.created());
366 CHECK(h->type == CommonInterceptorMetadata::CIMT_FILE);
367 return &h->file;
368 } else {
369 return 0;
370 }
371}
372
373UNUSED static void DeleteInterceptorMetadata(void *addr) {
374 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, true);
375 CHECK(h.exists());
376}
377#endif // SI_POSIX
378
379#if SANITIZER_INTERCEPT_STRLEN
380INTERCEPTOR(SIZE_T, strlen, const char *s) {
381 // Sometimes strlen is called prior to InitializeCommonInterceptors,
382 // in which case the REAL(strlen) typically used in
383 // COMMON_INTERCEPTOR_ENTER will fail. We use internal_strlen here
384 // to handle that.
385 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
386 return internal_strlen(s);
387 void *ctx;
388 COMMON_INTERCEPTOR_ENTER(ctx, strlen, s);
389 SIZE_T result = REAL(strlen)(s);
390 if (common_flags()->intercept_strlen)
391 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, result + 1);
392 return result;
393}
394#define INIT_STRLEN COMMON_INTERCEPT_FUNCTION(strlen)
395#else
396#define INIT_STRLEN
397#endif
398
399#if SANITIZER_INTERCEPT_STRNLEN
400INTERCEPTOR(SIZE_T, strnlen, const char *s, SIZE_T maxlen) {
401 void *ctx;
402 COMMON_INTERCEPTOR_ENTER(ctx, strnlen, s, maxlen);
403 SIZE_T length = REAL(strnlen)(s, maxlen);
404 if (common_flags()->intercept_strlen)
405 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, Min(length + 1, maxlen));
406 return length;
407}
408#define INIT_STRNLEN COMMON_INTERCEPT_FUNCTION(strnlen)
409#else
410#define INIT_STRNLEN
411#endif
412
413#if SANITIZER_INTERCEPT_STRNDUP
414INTERCEPTOR(char*, strndup, const char *s, uptr size) {
415 void *ctx;
416 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size);
417}
418#define INIT_STRNDUP COMMON_INTERCEPT_FUNCTION(strndup)
419#else
420#define INIT_STRNDUP
421#endif // SANITIZER_INTERCEPT_STRNDUP
422
423#if SANITIZER_INTERCEPT___STRNDUP
424INTERCEPTOR(char*, __strndup, const char *s, uptr size) {
425 void *ctx;
426 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size);
427}
428#define INIT___STRNDUP COMMON_INTERCEPT_FUNCTION(__strndup)
429#else
430#define INIT___STRNDUP
431#endif // SANITIZER_INTERCEPT___STRNDUP
432
433#if SANITIZER_INTERCEPT_TEXTDOMAIN
434INTERCEPTOR(char*, textdomain, const char *domainname) {
435 void *ctx;
436 COMMON_INTERCEPTOR_ENTER(ctx, textdomain, domainname);
437 if (domainname) COMMON_INTERCEPTOR_READ_STRING(ctx, domainname, 0);
438 char *domain = REAL(textdomain)(domainname);
439 if (domain) {
440 COMMON_INTERCEPTOR_INITIALIZE_RANGE(domain, internal_strlen(domain) + 1);
441 }
442 return domain;
443}
444#define INIT_TEXTDOMAIN COMMON_INTERCEPT_FUNCTION(textdomain)
445#else
446#define INIT_TEXTDOMAIN
447#endif
448
449#if SANITIZER_INTERCEPT_STRCMP || SANITIZER_INTERCEPT_MEMCMP
450static inline int CharCmpX(unsigned char c1, unsigned char c2) {
451 return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1;
452}
453#endif
454
455#if SANITIZER_INTERCEPT_STRCMP
456DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, uptr called_pc,
457 const char *s1, const char *s2, int result)
458
459INTERCEPTOR(int, strcmp, const char *s1, const char *s2) {
460 void *ctx;
461 COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2);
462 unsigned char c1, c2;
463 uptr i;
464 for (i = 0;; i++) {
465 c1 = (unsigned char)s1[i];
466 c2 = (unsigned char)s2[i];
467 if (c1 != c2 || c1 == '\0') break;
468 }
469 if (common_flags()->intercept_strcmp) {
470 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1);
471 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1);
472 }
473 int result = CharCmpX(c1, c2);
474 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, GET_CALLER_PC(), s1,
475 s2, result);
476 return result;
477}
478
479DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, uptr called_pc,
480 const char *s1, const char *s2, uptr n,
481 int result)
482
483INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr size) {
484 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
485 return internal_strncmp(s1, s2, n: size);
486 void *ctx;
487 COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size);
488 unsigned char c1 = 0, c2 = 0;
489 uptr i;
490 for (i = 0; i < size; i++) {
491 c1 = (unsigned char)s1[i];
492 c2 = (unsigned char)s2[i];
493 if (c1 != c2 || c1 == '\0') break;
494 }
495 uptr i1 = i;
496 uptr i2 = i;
497 if (common_flags()->strict_string_checks) {
498 for (; i1 < size && s1[i1]; i1++) {}
499 for (; i2 < size && s2[i2]; i2++) {}
500 }
501 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size));
502 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size));
503 int result = CharCmpX(c1, c2);
504 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, GET_CALLER_PC(), s1,
505 s2, size, result);
506 return result;
507}
508
509#define INIT_STRCMP COMMON_INTERCEPT_FUNCTION(strcmp)
510#define INIT_STRNCMP COMMON_INTERCEPT_FUNCTION(strncmp)
511#else
512#define INIT_STRCMP
513#define INIT_STRNCMP
514#endif
515
516#if SANITIZER_INTERCEPT_STRCASECMP
517static inline int CharCaseCmp(unsigned char c1, unsigned char c2) {
518 int c1_low = ToLower(c: c1);
519 int c2_low = ToLower(c: c2);
520 return c1_low - c2_low;
521}
522
523DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, uptr called_pc,
524 const char *s1, const char *s2, int result)
525
526INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) {
527 void *ctx;
528 COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2);
529 unsigned char c1 = 0, c2 = 0;
530 uptr i;
531 for (i = 0;; i++) {
532 c1 = (unsigned char)s1[i];
533 c2 = (unsigned char)s2[i];
534 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break;
535 }
536 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1);
537 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1);
538 int result = CharCaseCmp(c1, c2);
539 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, GET_CALLER_PC(),
540 s1, s2, result);
541 return result;
542}
543
544DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, uptr called_pc,
545 const char *s1, const char *s2, uptr size,
546 int result)
547
548INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T size) {
549 void *ctx;
550 COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, size);
551 unsigned char c1 = 0, c2 = 0;
552 uptr i;
553 for (i = 0; i < size; i++) {
554 c1 = (unsigned char)s1[i];
555 c2 = (unsigned char)s2[i];
556 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break;
557 }
558 uptr i1 = i;
559 uptr i2 = i;
560 if (common_flags()->strict_string_checks) {
561 for (; i1 < size && s1[i1]; i1++) {}
562 for (; i2 < size && s2[i2]; i2++) {}
563 }
564 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size));
565 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size));
566 int result = CharCaseCmp(c1, c2);
567 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, GET_CALLER_PC(),
568 s1, s2, size, result);
569 return result;
570}
571
572#define INIT_STRCASECMP COMMON_INTERCEPT_FUNCTION(strcasecmp)
573#define INIT_STRNCASECMP COMMON_INTERCEPT_FUNCTION(strncasecmp)
574#else
575#define INIT_STRCASECMP
576#define INIT_STRNCASECMP
577#endif
578
579#if SANITIZER_INTERCEPT_STRSTR || SANITIZER_INTERCEPT_STRCASESTR
580static inline void StrstrCheck(void *ctx, char *r, const char *s1,
581 const char *s2) {
582 uptr len1 = internal_strlen(s: s1);
583 uptr len2 = internal_strlen(s: s2);
584 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r ? r - s1 + len2 : len1 + 1);
585 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2 + 1);
586}
587#endif
588
589#if SANITIZER_INTERCEPT_STRSTR
590
591DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, uptr called_pc,
592 const char *s1, const char *s2, char *result)
593
594INTERCEPTOR(char*, strstr, const char *s1, const char *s2) {
595 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
596 return internal_strstr(haystack: s1, needle: s2);
597 void *ctx;
598 COMMON_INTERCEPTOR_ENTER(ctx, strstr, s1, s2);
599 char *r = REAL(strstr)(s1, s2);
600 if (common_flags()->intercept_strstr)
601 StrstrCheck(ctx, r, s1, s2);
602 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, GET_CALLER_PC(), s1,
603 s2, r);
604 return r;
605}
606
607#define INIT_STRSTR COMMON_INTERCEPT_FUNCTION(strstr);
608#else
609#define INIT_STRSTR
610#endif
611
612#if SANITIZER_INTERCEPT_STRCASESTR
613
614DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, uptr called_pc,
615 const char *s1, const char *s2, char *result)
616
617INTERCEPTOR(char*, strcasestr, const char *s1, const char *s2) {
618 void *ctx;
619 COMMON_INTERCEPTOR_ENTER(ctx, strcasestr, s1, s2);
620 char *r = REAL(strcasestr)(s1, s2);
621 if (common_flags()->intercept_strstr)
622 StrstrCheck(ctx, r, s1, s2);
623 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, GET_CALLER_PC(),
624 s1, s2, r);
625 return r;
626}
627
628#define INIT_STRCASESTR COMMON_INTERCEPT_FUNCTION(strcasestr);
629#else
630#define INIT_STRCASESTR
631#endif
632
633#if SANITIZER_INTERCEPT_STRTOK
634
635INTERCEPTOR(char*, strtok, char *str, const char *delimiters) {
636 void *ctx;
637 COMMON_INTERCEPTOR_ENTER(ctx, strtok, str, delimiters);
638 if (!common_flags()->intercept_strtok) {
639 return REAL(strtok)(str, delimiters);
640 }
641 if (common_flags()->strict_string_checks) {
642 // If strict_string_checks is enabled, we check the whole first argument
643 // string on the first call (strtok saves this string in a static buffer
644 // for subsequent calls). We do not need to check strtok's result.
645 // As the delimiters can change, we check them every call.
646 if (str != nullptr) {
647 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1);
648 }
649 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters,
650 internal_strlen(delimiters) + 1);
651 return REAL(strtok)(str, delimiters);
652 } else {
653 // However, when strict_string_checks is disabled we cannot check the
654 // whole string on the first call. Instead, we check the result string
655 // which is guaranteed to be a NULL-terminated substring of the first
656 // argument. We also conservatively check one character of str and the
657 // delimiters.
658 if (str != nullptr) {
659 COMMON_INTERCEPTOR_READ_STRING(ctx, str, 1);
660 }
661 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, 1);
662 char *result = REAL(strtok)(str, delimiters);
663 if (result != nullptr) {
664 COMMON_INTERCEPTOR_READ_RANGE(ctx, result, internal_strlen(result) + 1);
665 } else if (str != nullptr) {
666 // No delimiter were found, it's safe to assume that the entire str was
667 // scanned.
668 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1);
669 }
670 return result;
671 }
672}
673
674#define INIT_STRTOK COMMON_INTERCEPT_FUNCTION(strtok)
675#else
676#define INIT_STRTOK
677#endif
678
679#if SANITIZER_INTERCEPT_MEMMEM
680DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, uptr called_pc,
681 const void *s1, SIZE_T len1, const void *s2,
682 SIZE_T len2, void *result)
683
684INTERCEPTOR(void*, memmem, const void *s1, SIZE_T len1, const void *s2,
685 SIZE_T len2) {
686 void *ctx;
687 COMMON_INTERCEPTOR_ENTER(ctx, memmem, s1, len1, s2, len2);
688 void *r = REAL(memmem)(s1, len1, s2, len2);
689 if (common_flags()->intercept_memmem) {
690 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, len1);
691 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2);
692 }
693 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, GET_CALLER_PC(),
694 s1, len1, s2, len2, r);
695 return r;
696}
697
698#define INIT_MEMMEM COMMON_INTERCEPT_FUNCTION(memmem);
699#else
700#define INIT_MEMMEM
701#endif // SANITIZER_INTERCEPT_MEMMEM
702
703#if SANITIZER_INTERCEPT_STRCHR
704INTERCEPTOR(char*, strchr, const char *s, int c) {
705 void *ctx;
706 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
707 return internal_strchr(s, c);
708 COMMON_INTERCEPTOR_ENTER(ctx, strchr, s, c);
709 char *result = REAL(strchr)(s, c);
710 if (common_flags()->intercept_strchr) {
711 // Keep strlen as macro argument, as macro may ignore it.
712 COMMON_INTERCEPTOR_READ_STRING(ctx, s,
713 (result ? result - s : internal_strlen(s)) + 1);
714 }
715 return result;
716}
717#define INIT_STRCHR COMMON_INTERCEPT_FUNCTION(strchr)
718#else
719#define INIT_STRCHR
720#endif
721
722#if SANITIZER_INTERCEPT_STRCHRNUL
723INTERCEPTOR(char*, strchrnul, const char *s, int c) {
724 void *ctx;
725 COMMON_INTERCEPTOR_ENTER(ctx, strchrnul, s, c);
726 char *result = REAL(strchrnul)(s, c);
727 uptr len = result - s + 1;
728 if (common_flags()->intercept_strchr)
729 COMMON_INTERCEPTOR_READ_STRING(ctx, s, len);
730 return result;
731}
732#define INIT_STRCHRNUL COMMON_INTERCEPT_FUNCTION(strchrnul)
733#else
734#define INIT_STRCHRNUL
735#endif
736
737#if SANITIZER_INTERCEPT_STRRCHR
738INTERCEPTOR(char*, strrchr, const char *s, int c) {
739 void *ctx;
740 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
741 return internal_strrchr(s, c);
742 COMMON_INTERCEPTOR_ENTER(ctx, strrchr, s, c);
743 if (common_flags()->intercept_strchr)
744 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
745 return REAL(strrchr)(s, c);
746}
747#define INIT_STRRCHR COMMON_INTERCEPT_FUNCTION(strrchr)
748#else
749#define INIT_STRRCHR
750#endif
751
752#if SANITIZER_INTERCEPT_STRSPN
753INTERCEPTOR(SIZE_T, strspn, const char *s1, const char *s2) {
754 void *ctx;
755 COMMON_INTERCEPTOR_ENTER(ctx, strspn, s1, s2);
756 SIZE_T r = REAL(strspn)(s1, s2);
757 if (common_flags()->intercept_strspn) {
758 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1);
759 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1);
760 }
761 return r;
762}
763
764INTERCEPTOR(SIZE_T, strcspn, const char *s1, const char *s2) {
765 void *ctx;
766 COMMON_INTERCEPTOR_ENTER(ctx, strcspn, s1, s2);
767 SIZE_T r = REAL(strcspn)(s1, s2);
768 if (common_flags()->intercept_strspn) {
769 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1);
770 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1);
771 }
772 return r;
773}
774
775#define INIT_STRSPN \
776 COMMON_INTERCEPT_FUNCTION(strspn); \
777 COMMON_INTERCEPT_FUNCTION(strcspn);
778#else
779#define INIT_STRSPN
780#endif
781
782#if SANITIZER_INTERCEPT_STRPBRK
783INTERCEPTOR(char *, strpbrk, const char *s1, const char *s2) {
784 void *ctx;
785 COMMON_INTERCEPTOR_ENTER(ctx, strpbrk, s1, s2);
786 char *r = REAL(strpbrk)(s1, s2);
787 if (common_flags()->intercept_strpbrk) {
788 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1);
789 COMMON_INTERCEPTOR_READ_STRING(ctx, s1,
790 r ? r - s1 + 1 : internal_strlen(s1) + 1);
791 }
792 return r;
793}
794
795#define INIT_STRPBRK COMMON_INTERCEPT_FUNCTION(strpbrk);
796#else
797#define INIT_STRPBRK
798#endif
799
800#if SANITIZER_INTERCEPT_MEMCMP
801DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, uptr called_pc,
802 const void *s1, const void *s2, uptr n,
803 int result)
804
805// Common code for `memcmp` and `bcmp`.
806int MemcmpInterceptorCommon(void *ctx,
807 int (*real_fn)(const void *, const void *, uptr),
808 const void *a1, const void *a2, uptr size) {
809 if (common_flags()->intercept_memcmp) {
810 if (common_flags()->strict_memcmp) {
811 // Check the entire regions even if the first bytes of the buffers are
812 // different.
813 COMMON_INTERCEPTOR_READ_RANGE(ctx, a1, size);
814 COMMON_INTERCEPTOR_READ_RANGE(ctx, a2, size);
815 // Fallthrough to REAL(memcmp) below.
816 } else {
817 unsigned char c1 = 0, c2 = 0;
818 const unsigned char *s1 = (const unsigned char*)a1;
819 const unsigned char *s2 = (const unsigned char*)a2;
820 uptr i;
821 for (i = 0; i < size; i++) {
822 c1 = s1[i];
823 c2 = s2[i];
824 if (c1 != c2) break;
825 }
826 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, size));
827 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, size));
828 int r = CharCmpX(c1, c2);
829 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(),
830 a1, a2, size, r);
831 return r;
832 }
833 }
834 int result = real_fn(a1, a2, size);
835 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), a1,
836 a2, size, result);
837 return result;
838}
839
840INTERCEPTOR(int, memcmp, const void *a1, const void *a2, uptr size) {
841 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
842 return internal_memcmp(s1: a1, s2: a2, n: size);
843 void *ctx;
844 COMMON_INTERCEPTOR_ENTER(ctx, memcmp, a1, a2, size);
845 return MemcmpInterceptorCommon(ctx, REAL(memcmp), a1, a2, size);
846}
847
848#define INIT_MEMCMP COMMON_INTERCEPT_FUNCTION(memcmp)
849#else
850#define INIT_MEMCMP
851#endif
852
853#if SANITIZER_INTERCEPT_BCMP
854INTERCEPTOR(int, bcmp, const void *a1, const void *a2, uptr size) {
855 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
856 return internal_memcmp(s1: a1, s2: a2, n: size);
857 void *ctx;
858 COMMON_INTERCEPTOR_ENTER(ctx, bcmp, a1, a2, size);
859 return MemcmpInterceptorCommon(ctx, REAL(bcmp), a1, a2, size);
860}
861
862#define INIT_BCMP COMMON_INTERCEPT_FUNCTION(bcmp)
863#else
864#define INIT_BCMP
865#endif
866
867#if SANITIZER_INTERCEPT_MEMCHR
868INTERCEPTOR(void*, memchr, const void *s, int c, SIZE_T n) {
869 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
870 return internal_memchr(s, c, n);
871 void *ctx;
872 COMMON_INTERCEPTOR_ENTER(ctx, memchr, s, c, n);
873#if SANITIZER_WINDOWS
874 void *res;
875 if (REAL(memchr)) {
876 res = REAL(memchr)(s, c, n);
877 } else {
878 res = internal_memchr(s, c, n);
879 }
880#else
881 void *res = REAL(memchr)(s, c, n);
882#endif
883 uptr len = res ? (char *)res - (const char *)s + 1 : n;
884 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, len);
885 return res;
886}
887
888#define INIT_MEMCHR COMMON_INTERCEPT_FUNCTION(memchr)
889#else
890#define INIT_MEMCHR
891#endif
892
893#if SANITIZER_INTERCEPT_MEMRCHR
894INTERCEPTOR(void*, memrchr, const void *s, int c, SIZE_T n) {
895 void *ctx;
896 COMMON_INTERCEPTOR_ENTER(ctx, memrchr, s, c, n);
897 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, n);
898 return REAL(memrchr)(s, c, n);
899}
900
901#define INIT_MEMRCHR COMMON_INTERCEPT_FUNCTION(memrchr)
902#else
903#define INIT_MEMRCHR
904#endif
905
906#if SANITIZER_INTERCEPT_FREXP
907INTERCEPTOR(double, frexp, double x, int *exp) {
908 void *ctx;
909 COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp);
910 // Assuming frexp() always writes to |exp|.
911 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
912 double res = REAL(frexp)(x, exp);
913 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp));
914 return res;
915}
916
917#define INIT_FREXP COMMON_INTERCEPT_FUNCTION(frexp);
918#else
919#define INIT_FREXP
920#endif // SANITIZER_INTERCEPT_FREXP
921
922#if SANITIZER_INTERCEPT_FREXPF_FREXPL
923INTERCEPTOR(float, frexpf, float x, int *exp) {
924 void *ctx;
925 COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp);
926 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
927 float res = REAL(frexpf)(x, exp);
928 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp));
929 return res;
930}
931
932INTERCEPTOR(long double, frexpl, long double x, int *exp) {
933 void *ctx;
934 COMMON_INTERCEPTOR_ENTER(ctx, frexpl, x, exp);
935 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
936 long double res = REAL(frexpl)(x, exp);
937 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp));
938 return res;
939}
940
941#define INIT_FREXPF_FREXPL \
942 COMMON_INTERCEPT_FUNCTION(frexpf); \
943 COMMON_INTERCEPT_FUNCTION_LDBL(frexpl)
944#else
945#define INIT_FREXPF_FREXPL
946#endif // SANITIZER_INTERCEPT_FREXPF_FREXPL
947
948#if SI_POSIX
949static void write_iovec(void *ctx, struct __sanitizer_iovec *iovec,
950 SIZE_T iovlen, SIZE_T maxlen) {
951 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
952 SSIZE_T sz = Min(a: iovec[i].iov_len, b: maxlen);
953 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec[i].iov_base, sz);
954 maxlen -= sz;
955 }
956}
957
958static void read_iovec(void *ctx, struct __sanitizer_iovec *iovec,
959 SIZE_T iovlen, SIZE_T maxlen) {
960 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec) * iovlen);
961 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
962 SSIZE_T sz = Min(a: iovec[i].iov_len, b: maxlen);
963 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec[i].iov_base, sz);
964 maxlen -= sz;
965 }
966}
967#endif
968
969#if SANITIZER_INTERCEPT_READ
970INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
971 void *ctx;
972 COMMON_INTERCEPTOR_ENTER(ctx, read, fd, ptr, count);
973 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
974 // FIXME: under ASan the call below may write to freed memory and corrupt
975 // its metadata. See
976 // https://github.com/google/sanitizers/issues/321.
977 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(read)(fd, ptr, count);
978 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
979 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
980 return res;
981}
982#define INIT_READ COMMON_INTERCEPT_FUNCTION(read)
983#else
984#define INIT_READ
985#endif
986
987#if SANITIZER_INTERCEPT_FREAD
988INTERCEPTOR(SIZE_T, fread, void *ptr, SIZE_T size, SIZE_T nmemb, void *file) {
989 // libc file streams can call user-supplied functions, see fopencookie.
990 void *ctx;
991 COMMON_INTERCEPTOR_ENTER(ctx, fread, ptr, size, nmemb, file);
992 // FIXME: under ASan the call below may write to freed memory and corrupt
993 // its metadata. See
994 // https://github.com/google/sanitizers/issues/321.
995 SIZE_T res = REAL(fread)(ptr, size, nmemb, file);
996 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res * size);
997 return res;
998}
999#define INIT_FREAD COMMON_INTERCEPT_FUNCTION(fread)
1000#else
1001#define INIT_FREAD
1002#endif
1003
1004#if SANITIZER_INTERCEPT_PREAD
1005INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) {
1006 void *ctx;
1007 COMMON_INTERCEPTOR_ENTER(ctx, pread, fd, ptr, count, offset);
1008 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1009 // FIXME: under ASan the call below may write to freed memory and corrupt
1010 // its metadata. See
1011 // https://github.com/google/sanitizers/issues/321.
1012 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pread)(fd, ptr, count, offset);
1013 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
1014 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1015 return res;
1016}
1017#define INIT_PREAD COMMON_INTERCEPT_FUNCTION(pread)
1018#else
1019#define INIT_PREAD
1020#endif
1021
1022#if SANITIZER_INTERCEPT_PREAD64
1023INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) {
1024 void *ctx;
1025 COMMON_INTERCEPTOR_ENTER(ctx, pread64, fd, ptr, count, offset);
1026 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1027 // FIXME: under ASan the call below may write to freed memory and corrupt
1028 // its metadata. See
1029 // https://github.com/google/sanitizers/issues/321.
1030 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pread64)(fd, ptr, count, offset);
1031 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
1032 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1033 return res;
1034}
1035#define INIT_PREAD64 COMMON_INTERCEPT_FUNCTION(pread64)
1036#else
1037#define INIT_PREAD64
1038#endif
1039
1040#if SANITIZER_INTERCEPT_READV
1041INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov,
1042 int iovcnt) {
1043 void *ctx;
1044 COMMON_INTERCEPTOR_ENTER(ctx, readv, fd, iov, iovcnt);
1045 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1046 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(readv)(fd, iov, iovcnt);
1047 if (res > 0) write_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
1048 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1049 return res;
1050}
1051#define INIT_READV COMMON_INTERCEPT_FUNCTION(readv)
1052#else
1053#define INIT_READV
1054#endif
1055
1056#if SANITIZER_INTERCEPT_PREADV
1057INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt,
1058 OFF_T offset) {
1059 void *ctx;
1060 COMMON_INTERCEPTOR_ENTER(ctx, preadv, fd, iov, iovcnt, offset);
1061 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1062 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(preadv)(fd, iov, iovcnt, offset);
1063 if (res > 0) write_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
1064 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1065 return res;
1066}
1067#define INIT_PREADV COMMON_INTERCEPT_FUNCTION(preadv)
1068#else
1069#define INIT_PREADV
1070#endif
1071
1072#if SANITIZER_INTERCEPT_PREADV64
1073INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt,
1074 OFF64_T offset) {
1075 void *ctx;
1076 COMMON_INTERCEPTOR_ENTER(ctx, preadv64, fd, iov, iovcnt, offset);
1077 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1078 SSIZE_T res =
1079 COMMON_INTERCEPTOR_BLOCK_REAL(preadv64)(fd, iov, iovcnt, offset);
1080 if (res > 0) write_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
1081 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1082 return res;
1083}
1084#define INIT_PREADV64 COMMON_INTERCEPT_FUNCTION(preadv64)
1085#else
1086#define INIT_PREADV64
1087#endif
1088
1089#if SANITIZER_INTERCEPT_WRITE
1090INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) {
1091 void *ctx;
1092 COMMON_INTERCEPTOR_ENTER(ctx, write, fd, ptr, count);
1093 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1094 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1095 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(write)(fd, ptr, count);
1096 // FIXME: this check should be _before_ the call to
1097 // COMMON_INTERCEPTOR_BLOCK_REAL(write), not after
1098 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
1099 return res;
1100}
1101#define INIT_WRITE COMMON_INTERCEPT_FUNCTION(write)
1102#else
1103#define INIT_WRITE
1104#endif
1105
1106#if SANITIZER_INTERCEPT_FWRITE
1107INTERCEPTOR(SIZE_T, fwrite, const void *p, uptr size, uptr nmemb, void *file) {
1108 // libc file streams can call user-supplied functions, see fopencookie.
1109 void *ctx;
1110 COMMON_INTERCEPTOR_ENTER(ctx, fwrite, p, size, nmemb, file);
1111 SIZE_T res = REAL(fwrite)(p, size, nmemb, file);
1112 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, p, res * size);
1113 return res;
1114}
1115#define INIT_FWRITE COMMON_INTERCEPT_FUNCTION(fwrite)
1116#else
1117#define INIT_FWRITE
1118#endif
1119
1120#if SANITIZER_INTERCEPT_PWRITE
1121INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) {
1122 void *ctx;
1123 COMMON_INTERCEPTOR_ENTER(ctx, pwrite, fd, ptr, count, offset);
1124 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1125 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1126 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwrite)(fd, ptr, count, offset);
1127 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
1128 return res;
1129}
1130#define INIT_PWRITE COMMON_INTERCEPT_FUNCTION(pwrite)
1131#else
1132#define INIT_PWRITE
1133#endif
1134
1135#if SANITIZER_INTERCEPT_PWRITE64
1136INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count,
1137 OFF64_T offset) {
1138 void *ctx;
1139 COMMON_INTERCEPTOR_ENTER(ctx, pwrite64, fd, ptr, count, offset);
1140 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1141 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1142 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwrite64)(fd, ptr, count, offset);
1143 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
1144 return res;
1145}
1146#define INIT_PWRITE64 COMMON_INTERCEPT_FUNCTION(pwrite64)
1147#else
1148#define INIT_PWRITE64
1149#endif
1150
1151#if SANITIZER_INTERCEPT_WRITEV
1152INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov,
1153 int iovcnt) {
1154 void *ctx;
1155 COMMON_INTERCEPTOR_ENTER(ctx, writev, fd, iov, iovcnt);
1156 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1157 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1158 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(writev)(fd, iov, iovcnt);
1159 if (res > 0) read_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
1160 return res;
1161}
1162#define INIT_WRITEV COMMON_INTERCEPT_FUNCTION(writev)
1163#else
1164#define INIT_WRITEV
1165#endif
1166
1167#if SANITIZER_INTERCEPT_PWRITEV
1168INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt,
1169 OFF_T offset) {
1170 void *ctx;
1171 COMMON_INTERCEPTOR_ENTER(ctx, pwritev, fd, iov, iovcnt, offset);
1172 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1173 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1174 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwritev)(fd, iov, iovcnt, offset);
1175 if (res > 0) read_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
1176 return res;
1177}
1178#define INIT_PWRITEV COMMON_INTERCEPT_FUNCTION(pwritev)
1179#else
1180#define INIT_PWRITEV
1181#endif
1182
1183#if SANITIZER_INTERCEPT_PWRITEV64
1184INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt,
1185 OFF64_T offset) {
1186 void *ctx;
1187 COMMON_INTERCEPTOR_ENTER(ctx, pwritev64, fd, iov, iovcnt, offset);
1188 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
1189 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
1190 SSIZE_T res =
1191 COMMON_INTERCEPTOR_BLOCK_REAL(pwritev64)(fd, iov, iovcnt, offset);
1192 if (res > 0) read_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
1193 return res;
1194}
1195#define INIT_PWRITEV64 COMMON_INTERCEPT_FUNCTION(pwritev64)
1196#else
1197#define INIT_PWRITEV64
1198#endif
1199
1200#if SANITIZER_INTERCEPT_FGETS
1201INTERCEPTOR(char *, fgets, char *s, SIZE_T size, void *file) {
1202 // libc file streams can call user-supplied functions, see fopencookie.
1203 void *ctx;
1204 COMMON_INTERCEPTOR_ENTER(ctx, fgets, s, size, file);
1205 // FIXME: under ASan the call below may write to freed memory and corrupt
1206 // its metadata. See
1207 // https://github.com/google/sanitizers/issues/321.
1208 char *res = REAL(fgets)(s, size, file);
1209 if (res)
1210 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1);
1211 return res;
1212}
1213#define INIT_FGETS COMMON_INTERCEPT_FUNCTION(fgets)
1214#else
1215#define INIT_FGETS
1216#endif
1217
1218#if SANITIZER_INTERCEPT_FPUTS
1219INTERCEPTOR_WITH_SUFFIX(int, fputs, char *s, void *file) {
1220 // libc file streams can call user-supplied functions, see fopencookie.
1221 void *ctx;
1222 COMMON_INTERCEPTOR_ENTER(ctx, fputs, s, file);
1223 if (!SANITIZER_APPLE || s) { // `fputs(NULL, file)` is supported on Darwin.
1224 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
1225 }
1226 return REAL(fputs)(s, file);
1227}
1228#define INIT_FPUTS COMMON_INTERCEPT_FUNCTION(fputs)
1229#else
1230#define INIT_FPUTS
1231#endif
1232
1233#if SANITIZER_INTERCEPT_PUTS
1234INTERCEPTOR(int, puts, char *s) {
1235 // libc file streams can call user-supplied functions, see fopencookie.
1236 void *ctx;
1237 COMMON_INTERCEPTOR_ENTER(ctx, puts, s);
1238 if (!SANITIZER_APPLE || s) { // `puts(NULL)` is supported on Darwin.
1239 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
1240 }
1241 return REAL(puts)(s);
1242}
1243#define INIT_PUTS COMMON_INTERCEPT_FUNCTION(puts)
1244#else
1245#define INIT_PUTS
1246#endif
1247
1248#if SANITIZER_INTERCEPT_PRCTL
1249INTERCEPTOR(int, prctl, int option, unsigned long arg2, unsigned long arg3,
1250 unsigned long arg4, unsigned long arg5) {
1251 void *ctx;
1252 COMMON_INTERCEPTOR_ENTER(ctx, prctl, option, arg2, arg3, arg4, arg5);
1253 static const int PR_SET_NAME = 15;
1254 static const int PR_GET_NAME = 16;
1255 static const int PR_SET_VMA = 0x53564d41;
1256 static const int PR_SCHED_CORE = 62;
1257 static const int PR_SCHED_CORE_GET = 0;
1258 if (option == PR_SET_VMA && arg2 == 0UL) {
1259 char *name = (char *)arg5;
1260 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
1261 }
1262 int res = REAL(prctl)(option, arg2, arg3, arg4, arg5);
1263 if (option == PR_SET_NAME) {
1264 char buff[16];
1265 internal_strncpy(dst: buff, src: (char *)arg2, n: 15);
1266 buff[15] = 0;
1267 COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff);
1268 } else if (res == 0 && option == PR_GET_NAME) {
1269 char *name = (char *)arg2;
1270 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
1271 } else if (res != -1 && option == PR_SCHED_CORE &&
1272 arg2 == PR_SCHED_CORE_GET) {
1273 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64*)(arg5), sizeof(u64));
1274 }
1275 return res;
1276}
1277#define INIT_PRCTL COMMON_INTERCEPT_FUNCTION(prctl)
1278#else
1279#define INIT_PRCTL
1280#endif // SANITIZER_INTERCEPT_PRCTL
1281
1282#if SANITIZER_INTERCEPT_TIME
1283INTERCEPTOR(unsigned long, time, unsigned long *t) {
1284 void *ctx;
1285 COMMON_INTERCEPTOR_ENTER(ctx, time, t);
1286 unsigned long local_t;
1287 unsigned long res = REAL(time)(&local_t);
1288 if (t && res != (unsigned long)-1) {
1289 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, t, sizeof(*t));
1290 *t = local_t;
1291 }
1292 return res;
1293}
1294#define INIT_TIME COMMON_INTERCEPT_FUNCTION(time);
1295#else
1296#define INIT_TIME
1297#endif // SANITIZER_INTERCEPT_TIME
1298
1299#if SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
1300static void unpoison_tm(void *ctx, __sanitizer_tm *tm) {
1301 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm));
1302#if !SANITIZER_SOLARIS
1303 if (tm->tm_zone) {
1304 // Can not use COMMON_INTERCEPTOR_WRITE_RANGE here, because tm->tm_zone
1305 // can point to shared memory and tsan would report a data race.
1306 COMMON_INTERCEPTOR_INITIALIZE_RANGE(tm->tm_zone,
1307 internal_strlen(tm->tm_zone) + 1);
1308 }
1309#endif
1310}
1311INTERCEPTOR(__sanitizer_tm *, localtime, unsigned long *timep) {
1312 void *ctx;
1313 COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep);
1314 __sanitizer_tm *res = REAL(localtime)(timep);
1315 if (res) {
1316 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1317 unpoison_tm(ctx, tm: res);
1318 }
1319 return res;
1320}
1321INTERCEPTOR(__sanitizer_tm *, localtime_r, unsigned long *timep, void *result) {
1322 void *ctx;
1323 COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result);
1324 __sanitizer_tm *res = REAL(localtime_r)(timep, result);
1325 if (res) {
1326 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1327 unpoison_tm(ctx, tm: res);
1328 }
1329 return res;
1330}
1331INTERCEPTOR(__sanitizer_tm *, gmtime, unsigned long *timep) {
1332 void *ctx;
1333 COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep);
1334 __sanitizer_tm *res = REAL(gmtime)(timep);
1335 if (res) {
1336 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1337 unpoison_tm(ctx, tm: res);
1338 }
1339 return res;
1340}
1341INTERCEPTOR(__sanitizer_tm *, gmtime_r, unsigned long *timep, void *result) {
1342 void *ctx;
1343 COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result);
1344 __sanitizer_tm *res = REAL(gmtime_r)(timep, result);
1345 if (res) {
1346 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1347 unpoison_tm(ctx, tm: res);
1348 }
1349 return res;
1350}
1351INTERCEPTOR(char *, ctime, unsigned long *timep) {
1352 void *ctx;
1353 COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep);
1354 // FIXME: under ASan the call below may write to freed memory and corrupt
1355 // its metadata. See
1356 // https://github.com/google/sanitizers/issues/321.
1357 char *res = REAL(ctime)(timep);
1358 if (res) {
1359 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1360 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1361 }
1362 return res;
1363}
1364INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) {
1365 void *ctx;
1366 COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result);
1367 // FIXME: under ASan the call below may write to freed memory and corrupt
1368 // its metadata. See
1369 // https://github.com/google/sanitizers/issues/321.
1370 char *res = REAL(ctime_r)(timep, result);
1371 if (res) {
1372 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
1373 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1374 }
1375 return res;
1376}
1377INTERCEPTOR(char *, asctime, __sanitizer_tm *tm) {
1378 void *ctx;
1379 COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm);
1380 // FIXME: under ASan the call below may write to freed memory and corrupt
1381 // its metadata. See
1382 // https://github.com/google/sanitizers/issues/321.
1383 char *res = REAL(asctime)(tm);
1384 if (res) {
1385 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
1386 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1387 }
1388 return res;
1389}
1390INTERCEPTOR(char *, asctime_r, __sanitizer_tm *tm, char *result) {
1391 void *ctx;
1392 COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result);
1393 // FIXME: under ASan the call below may write to freed memory and corrupt
1394 // its metadata. See
1395 // https://github.com/google/sanitizers/issues/321.
1396 char *res = REAL(asctime_r)(tm, result);
1397 if (res) {
1398 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
1399 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
1400 }
1401 return res;
1402}
1403INTERCEPTOR(long, mktime, __sanitizer_tm *tm) {
1404 void *ctx;
1405 COMMON_INTERCEPTOR_ENTER(ctx, mktime, tm);
1406 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_sec, sizeof(tm->tm_sec));
1407 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_min, sizeof(tm->tm_min));
1408 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_hour, sizeof(tm->tm_hour));
1409 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mday, sizeof(tm->tm_mday));
1410 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mon, sizeof(tm->tm_mon));
1411 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_year, sizeof(tm->tm_year));
1412 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_isdst, sizeof(tm->tm_isdst));
1413 long res = REAL(mktime)(tm);
1414 if (res != -1) unpoison_tm(ctx, tm);
1415 return res;
1416}
1417#define INIT_LOCALTIME_AND_FRIENDS \
1418 COMMON_INTERCEPT_FUNCTION(localtime); \
1419 COMMON_INTERCEPT_FUNCTION(localtime_r); \
1420 COMMON_INTERCEPT_FUNCTION(gmtime); \
1421 COMMON_INTERCEPT_FUNCTION(gmtime_r); \
1422 COMMON_INTERCEPT_FUNCTION(ctime); \
1423 COMMON_INTERCEPT_FUNCTION(ctime_r); \
1424 COMMON_INTERCEPT_FUNCTION(asctime); \
1425 COMMON_INTERCEPT_FUNCTION(asctime_r); \
1426 COMMON_INTERCEPT_FUNCTION(mktime);
1427#else
1428#define INIT_LOCALTIME_AND_FRIENDS
1429#endif // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
1430
1431#if SANITIZER_INTERCEPT_STRPTIME
1432INTERCEPTOR(char *, strptime, char *s, char *format, __sanitizer_tm *tm) {
1433 void *ctx;
1434 COMMON_INTERCEPTOR_ENTER(ctx, strptime, s, format, tm);
1435 if (format)
1436 COMMON_INTERCEPTOR_READ_RANGE(ctx, format, internal_strlen(format) + 1);
1437 // FIXME: under ASan the call below may write to freed memory and corrupt
1438 // its metadata. See
1439 // https://github.com/google/sanitizers/issues/321.
1440 char *res = REAL(strptime)(s, format, tm);
1441 COMMON_INTERCEPTOR_READ_STRING(ctx, s, res ? res - s : 0);
1442 if (res && tm) {
1443 // Do not call unpoison_tm here, because strptime does not, in fact,
1444 // initialize the entire struct tm. For example, tm_zone pointer is left
1445 // uninitialized.
1446 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm));
1447 }
1448 return res;
1449}
1450#define INIT_STRPTIME COMMON_INTERCEPT_FUNCTION(strptime);
1451#else
1452#define INIT_STRPTIME
1453#endif
1454
1455#if SANITIZER_INTERCEPT_SCANF || SANITIZER_INTERCEPT_PRINTF
1456#include "sanitizer_common_interceptors_format.inc"
1457
1458#define FORMAT_INTERCEPTOR_IMPL(name, vname, ...) \
1459 { \
1460 void *ctx; \
1461 va_list ap; \
1462 va_start(ap, format); \
1463 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap); \
1464 int res = WRAP(vname)(__VA_ARGS__, ap); \
1465 va_end(ap); \
1466 return res; \
1467 }
1468
1469#endif
1470
1471#if SANITIZER_INTERCEPT_SCANF
1472
1473#define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...) \
1474 { \
1475 void *ctx; \
1476 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \
1477 va_list aq; \
1478 va_copy(aq, ap); \
1479 int res = REAL(vname)(__VA_ARGS__); \
1480 if (res > 0) \
1481 scanf_common(ctx, res, allowGnuMalloc, format, aq); \
1482 va_end(aq); \
1483 return res; \
1484 }
1485
1486INTERCEPTOR(int, vscanf, const char *format, va_list ap)
1487VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap)
1488
1489INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap)
1490VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap)
1491
1492INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap)
1493VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap)
1494
1495#if SANITIZER_INTERCEPT_ISOC99_SCANF
1496INTERCEPTOR(int, __isoc99_vscanf, const char *format, va_list ap)
1497VSCANF_INTERCEPTOR_IMPL(__isoc99_vscanf, false, format, ap)
1498
1499INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format,
1500 va_list ap)
1501VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap)
1502
1503INTERCEPTOR(int, __isoc99_vfscanf, void *stream, const char *format, va_list ap)
1504VSCANF_INTERCEPTOR_IMPL(__isoc99_vfscanf, false, stream, format, ap)
1505
1506INTERCEPTOR(int, __isoc23_vscanf, const char *format, va_list ap)
1507VSCANF_INTERCEPTOR_IMPL(__isoc23_vscanf, false, format, ap)
1508
1509INTERCEPTOR(int, __isoc23_vsscanf, const char *str, const char *format,
1510 va_list ap)
1511VSCANF_INTERCEPTOR_IMPL(__isoc23_vsscanf, false, str, format, ap)
1512
1513INTERCEPTOR(int, __isoc23_vfscanf, void *stream, const char *format, va_list ap)
1514VSCANF_INTERCEPTOR_IMPL(__isoc23_vfscanf, false, stream, format, ap)
1515#endif // SANITIZER_INTERCEPT_ISOC99_SCANF
1516
1517INTERCEPTOR(int, scanf, const char *format, ...)
1518FORMAT_INTERCEPTOR_IMPL(scanf, vscanf, format)
1519
1520INTERCEPTOR(int, fscanf, void *stream, const char *format, ...)
1521FORMAT_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format)
1522
1523INTERCEPTOR(int, sscanf, const char *str, const char *format, ...)
1524FORMAT_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format)
1525
1526#if SANITIZER_INTERCEPT_ISOC99_SCANF
1527INTERCEPTOR(int, __isoc99_scanf, const char *format, ...)
1528FORMAT_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format)
1529
1530INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...)
1531FORMAT_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format)
1532
1533INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...)
1534FORMAT_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format)
1535
1536INTERCEPTOR(int, __isoc23_scanf, const char *format, ...)
1537FORMAT_INTERCEPTOR_IMPL(__isoc23_scanf, __isoc23_vscanf, format)
1538
1539INTERCEPTOR(int, __isoc23_fscanf, void *stream, const char *format, ...)
1540FORMAT_INTERCEPTOR_IMPL(__isoc23_fscanf, __isoc23_vfscanf, stream, format)
1541
1542INTERCEPTOR(int, __isoc23_sscanf, const char *str, const char *format, ...)
1543FORMAT_INTERCEPTOR_IMPL(__isoc23_sscanf, __isoc23_vsscanf, str, format)
1544#endif
1545
1546#endif
1547
1548#if SANITIZER_INTERCEPT_SCANF
1549#define INIT_SCANF \
1550 COMMON_INTERCEPT_FUNCTION_LDBL(scanf); \
1551 COMMON_INTERCEPT_FUNCTION_LDBL(sscanf); \
1552 COMMON_INTERCEPT_FUNCTION_LDBL(fscanf); \
1553 COMMON_INTERCEPT_FUNCTION_LDBL(vscanf); \
1554 COMMON_INTERCEPT_FUNCTION_LDBL(vsscanf); \
1555 COMMON_INTERCEPT_FUNCTION_LDBL(vfscanf);
1556#else
1557#define INIT_SCANF
1558#endif
1559
1560#if SANITIZER_INTERCEPT_ISOC99_SCANF
1561#define INIT_ISOC99_SCANF \
1562 COMMON_INTERCEPT_FUNCTION(__isoc99_scanf); \
1563 COMMON_INTERCEPT_FUNCTION(__isoc99_sscanf); \
1564 COMMON_INTERCEPT_FUNCTION(__isoc99_fscanf); \
1565 COMMON_INTERCEPT_FUNCTION(__isoc99_vscanf); \
1566 COMMON_INTERCEPT_FUNCTION(__isoc99_vsscanf); \
1567 COMMON_INTERCEPT_FUNCTION(__isoc99_vfscanf); \
1568 COMMON_INTERCEPT_FUNCTION(__isoc23_scanf); \
1569 COMMON_INTERCEPT_FUNCTION(__isoc23_sscanf); \
1570 COMMON_INTERCEPT_FUNCTION(__isoc23_fscanf); \
1571 COMMON_INTERCEPT_FUNCTION(__isoc23_vscanf); \
1572 COMMON_INTERCEPT_FUNCTION(__isoc23_vsscanf); \
1573 COMMON_INTERCEPT_FUNCTION(__isoc23_vfscanf);
1574#else
1575#define INIT_ISOC99_SCANF
1576#endif
1577
1578#if SANITIZER_INTERCEPT_PRINTF
1579
1580#define VPRINTF_INTERCEPTOR_ENTER(vname, ...) \
1581 void *ctx; \
1582 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \
1583 va_list aq; \
1584 va_copy(aq, ap);
1585
1586#define VPRINTF_INTERCEPTOR_RETURN() \
1587 va_end(aq);
1588
1589#define VPRINTF_INTERCEPTOR_IMPL(vname, ...) \
1590 { \
1591 VPRINTF_INTERCEPTOR_ENTER(vname, __VA_ARGS__); \
1592 if (common_flags()->check_printf) \
1593 printf_common(ctx, format, aq); \
1594 int res = REAL(vname)(__VA_ARGS__); \
1595 VPRINTF_INTERCEPTOR_RETURN(); \
1596 return res; \
1597 }
1598
1599// FIXME: under ASan the REAL() call below may write to freed memory and
1600// corrupt its metadata. See
1601// https://github.com/google/sanitizers/issues/321.
1602#define VSPRINTF_INTERCEPTOR_IMPL(vname, str, ...) \
1603 { \
1604 VPRINTF_INTERCEPTOR_ENTER(vname, str, __VA_ARGS__) \
1605 if (common_flags()->check_printf) { \
1606 printf_common(ctx, format, aq); \
1607 } \
1608 int res = REAL(vname)(str, __VA_ARGS__); \
1609 if (res >= 0) { \
1610 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, res + 1); \
1611 } \
1612 VPRINTF_INTERCEPTOR_RETURN(); \
1613 return res; \
1614 }
1615
1616// FIXME: under ASan the REAL() call below may write to freed memory and
1617// corrupt its metadata. See
1618// https://github.com/google/sanitizers/issues/321.
1619#define VSNPRINTF_INTERCEPTOR_IMPL(vname, str, size, ...) \
1620 { \
1621 VPRINTF_INTERCEPTOR_ENTER(vname, str, size, __VA_ARGS__) \
1622 if (common_flags()->check_printf) { \
1623 printf_common(ctx, format, aq); \
1624 } \
1625 int res = REAL(vname)(str, size, __VA_ARGS__); \
1626 if (res >= 0) { \
1627 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, Min(size, (SIZE_T)(res + 1))); \
1628 } \
1629 VPRINTF_INTERCEPTOR_RETURN(); \
1630 return res; \
1631 }
1632
1633// FIXME: under ASan the REAL() call below may write to freed memory and
1634// corrupt its metadata. See
1635// https://github.com/google/sanitizers/issues/321.
1636#define VASPRINTF_INTERCEPTOR_IMPL(vname, strp, ...) \
1637 { \
1638 VPRINTF_INTERCEPTOR_ENTER(vname, strp, __VA_ARGS__) \
1639 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, strp, sizeof(char *)); \
1640 if (common_flags()->check_printf) { \
1641 printf_common(ctx, format, aq); \
1642 } \
1643 int res = REAL(vname)(strp, __VA_ARGS__); \
1644 if (res >= 0) { \
1645 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *strp, res + 1); \
1646 } \
1647 VPRINTF_INTERCEPTOR_RETURN(); \
1648 return res; \
1649 }
1650
1651INTERCEPTOR(int, vprintf, const char *format, va_list ap)
1652VPRINTF_INTERCEPTOR_IMPL(vprintf, format, ap)
1653
1654INTERCEPTOR(int, vfprintf, __sanitizer_FILE *stream, const char *format,
1655 va_list ap)
1656VPRINTF_INTERCEPTOR_IMPL(vfprintf, stream, format, ap)
1657
1658INTERCEPTOR(int, vsnprintf, char *str, SIZE_T size, const char *format,
1659 va_list ap)
1660VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap)
1661
1662#if SANITIZER_INTERCEPT___PRINTF_CHK
1663INTERCEPTOR(int, __vsnprintf_chk, char *str, SIZE_T size, int flag,
1664 SIZE_T size_to, const char *format, va_list ap)
1665VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap)
1666#endif
1667
1668#if SANITIZER_INTERCEPT_PRINTF_L
1669INTERCEPTOR(int, vsnprintf_l, char *str, SIZE_T size, void *loc,
1670 const char *format, va_list ap)
1671VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf_l, str, size, loc, format, ap)
1672
1673INTERCEPTOR(int, snprintf_l, char *str, SIZE_T size, void *loc,
1674 const char *format, ...)
1675FORMAT_INTERCEPTOR_IMPL(snprintf_l, vsnprintf_l, str, size, loc, format)
1676#endif // SANITIZER_INTERCEPT_PRINTF_L
1677
1678INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap)
1679VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap)
1680
1681#if SANITIZER_INTERCEPT___PRINTF_CHK
1682INTERCEPTOR(int, __vsprintf_chk, char *str, int flag, SIZE_T size_to,
1683 const char *format, va_list ap)
1684VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap)
1685#endif
1686
1687INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap)
1688VASPRINTF_INTERCEPTOR_IMPL(vasprintf, strp, format, ap)
1689
1690#if SANITIZER_INTERCEPT_ISOC99_PRINTF
1691INTERCEPTOR(int, __isoc99_vprintf, const char *format, va_list ap)
1692VPRINTF_INTERCEPTOR_IMPL(__isoc99_vprintf, format, ap)
1693
1694INTERCEPTOR(int, __isoc99_vfprintf, __sanitizer_FILE *stream,
1695 const char *format, va_list ap)
1696VPRINTF_INTERCEPTOR_IMPL(__isoc99_vfprintf, stream, format, ap)
1697
1698INTERCEPTOR(int, __isoc99_vsnprintf, char *str, SIZE_T size, const char *format,
1699 va_list ap)
1700VSNPRINTF_INTERCEPTOR_IMPL(__isoc99_vsnprintf, str, size, format, ap)
1701
1702INTERCEPTOR(int, __isoc99_vsprintf, char *str, const char *format,
1703 va_list ap)
1704VSPRINTF_INTERCEPTOR_IMPL(__isoc99_vsprintf, str, format,
1705 ap)
1706
1707#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF
1708
1709INTERCEPTOR(int, printf, const char *format, ...)
1710FORMAT_INTERCEPTOR_IMPL(printf, vprintf, format)
1711
1712INTERCEPTOR(int, fprintf, __sanitizer_FILE *stream, const char *format, ...)
1713FORMAT_INTERCEPTOR_IMPL(fprintf, vfprintf, stream, format)
1714
1715#if SANITIZER_INTERCEPT___PRINTF_CHK
1716INTERCEPTOR(int, __fprintf_chk, __sanitizer_FILE *stream, SIZE_T size,
1717 const char *format, ...)
1718FORMAT_INTERCEPTOR_IMPL(__fprintf_chk, vfprintf, stream, format)
1719#endif
1720
1721INTERCEPTOR(int, sprintf, char *str, const char *format, ...)
1722FORMAT_INTERCEPTOR_IMPL(sprintf, vsprintf, str, format)
1723
1724#if SANITIZER_INTERCEPT___PRINTF_CHK
1725INTERCEPTOR(int, __sprintf_chk, char *str, int flag, SIZE_T size_to,
1726 const char *format, ...)
1727FORMAT_INTERCEPTOR_IMPL(__sprintf_chk, vsprintf, str, format)
1728#endif
1729
1730INTERCEPTOR(int, snprintf, char *str, SIZE_T size, const char *format, ...)
1731FORMAT_INTERCEPTOR_IMPL(snprintf, vsnprintf, str, size, format)
1732
1733#if SANITIZER_INTERCEPT___PRINTF_CHK
1734INTERCEPTOR(int, __snprintf_chk, char *str, SIZE_T size, int flag,
1735 SIZE_T size_to, const char *format, ...)
1736FORMAT_INTERCEPTOR_IMPL(__snprintf_chk, vsnprintf, str, size, format)
1737#endif
1738
1739INTERCEPTOR(int, asprintf, char **strp, const char *format, ...)
1740FORMAT_INTERCEPTOR_IMPL(asprintf, vasprintf, strp, format)
1741
1742#if SANITIZER_INTERCEPT_ISOC99_PRINTF
1743INTERCEPTOR(int, __isoc99_printf, const char *format, ...)
1744FORMAT_INTERCEPTOR_IMPL(__isoc99_printf, __isoc99_vprintf, format)
1745
1746INTERCEPTOR(int, __isoc99_fprintf, __sanitizer_FILE *stream, const char *format,
1747 ...)
1748FORMAT_INTERCEPTOR_IMPL(__isoc99_fprintf, __isoc99_vfprintf, stream, format)
1749
1750INTERCEPTOR(int, __isoc99_sprintf, char *str, const char *format, ...)
1751FORMAT_INTERCEPTOR_IMPL(__isoc99_sprintf, __isoc99_vsprintf, str, format)
1752
1753INTERCEPTOR(int, __isoc99_snprintf, char *str, SIZE_T size,
1754 const char *format, ...)
1755FORMAT_INTERCEPTOR_IMPL(__isoc99_snprintf, __isoc99_vsnprintf, str, size,
1756 format)
1757
1758#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF
1759
1760#endif // SANITIZER_INTERCEPT_PRINTF
1761
1762#if SANITIZER_INTERCEPT_PRINTF
1763#define INIT_PRINTF \
1764 COMMON_INTERCEPT_FUNCTION_LDBL(printf); \
1765 COMMON_INTERCEPT_FUNCTION_LDBL(sprintf); \
1766 COMMON_INTERCEPT_FUNCTION_LDBL(snprintf); \
1767 COMMON_INTERCEPT_FUNCTION_LDBL(asprintf); \
1768 COMMON_INTERCEPT_FUNCTION_LDBL(fprintf); \
1769 COMMON_INTERCEPT_FUNCTION_LDBL(vprintf); \
1770 COMMON_INTERCEPT_FUNCTION_LDBL(vsprintf); \
1771 COMMON_INTERCEPT_FUNCTION_LDBL(vsnprintf); \
1772 COMMON_INTERCEPT_FUNCTION_LDBL(vasprintf); \
1773 COMMON_INTERCEPT_FUNCTION_LDBL(vfprintf);
1774#else
1775#define INIT_PRINTF
1776#endif
1777
1778#if SANITIZER_INTERCEPT___PRINTF_CHK
1779#define INIT___PRINTF_CHK \
1780 COMMON_INTERCEPT_FUNCTION(__sprintf_chk); \
1781 COMMON_INTERCEPT_FUNCTION(__snprintf_chk); \
1782 COMMON_INTERCEPT_FUNCTION(__vsprintf_chk); \
1783 COMMON_INTERCEPT_FUNCTION(__vsnprintf_chk); \
1784 COMMON_INTERCEPT_FUNCTION(__fprintf_chk);
1785#else
1786#define INIT___PRINTF_CHK
1787#endif
1788
1789#if SANITIZER_INTERCEPT_PRINTF_L
1790#define INIT_PRINTF_L \
1791 COMMON_INTERCEPT_FUNCTION(snprintf_l); \
1792 COMMON_INTERCEPT_FUNCTION(vsnprintf_l);
1793#else
1794#define INIT_PRINTF_L
1795#endif
1796
1797#if SANITIZER_INTERCEPT_ISOC99_PRINTF
1798#define INIT_ISOC99_PRINTF \
1799 COMMON_INTERCEPT_FUNCTION(__isoc99_printf); \
1800 COMMON_INTERCEPT_FUNCTION(__isoc99_sprintf); \
1801 COMMON_INTERCEPT_FUNCTION(__isoc99_snprintf); \
1802 COMMON_INTERCEPT_FUNCTION(__isoc99_fprintf); \
1803 COMMON_INTERCEPT_FUNCTION(__isoc99_vprintf); \
1804 COMMON_INTERCEPT_FUNCTION(__isoc99_vsprintf); \
1805 COMMON_INTERCEPT_FUNCTION(__isoc99_vsnprintf); \
1806 COMMON_INTERCEPT_FUNCTION(__isoc99_vfprintf);
1807#else
1808#define INIT_ISOC99_PRINTF
1809#endif
1810
1811#if SANITIZER_INTERCEPT_IOCTL
1812#include "sanitizer_common_interceptors_ioctl.inc"
1813#include "sanitizer_interceptors_ioctl_netbsd.inc"
1814INTERCEPTOR(int, ioctl, int d, unsigned long request, ...) {
1815 // We need a frame pointer, because we call into ioctl_common_[pre|post] which
1816 // can trigger a report and we need to be able to unwind through this
1817 // function. On Mac in debug mode we might not have a frame pointer, because
1818 // ioctl_common_[pre|post] doesn't get inlined here.
1819 ENABLE_FRAME_POINTER;
1820
1821 void *ctx;
1822 va_list ap;
1823 va_start(ap, request);
1824 void *arg = va_arg(ap, void *);
1825 va_end(ap);
1826 COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg);
1827
1828 CHECK(ioctl_initialized);
1829
1830 // Note: TSan does not use common flags, and they are zero-initialized.
1831 // This effectively disables ioctl handling in TSan.
1832 if (!common_flags()->handle_ioctl) return REAL(ioctl)(d, request, arg);
1833
1834 // Although request is unsigned long, the rest of the interceptor uses it
1835 // as just "unsigned" to save space, because we know that all values fit in
1836 // "unsigned" - they are compile-time constants.
1837
1838 const ioctl_desc *desc = ioctl_lookup(req: request);
1839 ioctl_desc decoded_desc;
1840 if (!desc) {
1841 VPrintf(2, "Decoding unknown ioctl 0x%lx\n", request);
1842 if (!ioctl_decode(req: request, desc: &decoded_desc))
1843 Printf(format: "WARNING: failed decoding unknown ioctl 0x%lx\n", request);
1844 else
1845 desc = &decoded_desc;
1846 }
1847
1848 if (desc) ioctl_common_pre(ctx, desc, d, request, arg);
1849 int res = REAL(ioctl)(d, request, arg);
1850 // FIXME: some ioctls have different return values for success and failure.
1851 if (desc && res != -1) ioctl_common_post(ctx, desc, res, d, request, arg);
1852 return res;
1853}
1854#define INIT_IOCTL \
1855 ioctl_init(); \
1856 COMMON_INTERCEPT_FUNCTION(ioctl);
1857#else
1858#define INIT_IOCTL
1859#endif
1860
1861#if SANITIZER_POSIX
1862UNUSED static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) {
1863 if (pwd) {
1864 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, sizeof(*pwd));
1865 if (pwd->pw_name)
1866 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_name,
1867 internal_strlen(pwd->pw_name) + 1);
1868 if (pwd->pw_passwd)
1869 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_passwd,
1870 internal_strlen(pwd->pw_passwd) + 1);
1871#if !SANITIZER_ANDROID
1872 if (pwd->pw_gecos)
1873 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_gecos,
1874 internal_strlen(pwd->pw_gecos) + 1);
1875#endif
1876#if SANITIZER_APPLE || SANITIZER_FREEBSD || SANITIZER_NETBSD
1877 if (pwd->pw_class)
1878 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_class,
1879 internal_strlen(pwd->pw_class) + 1);
1880#endif
1881 if (pwd->pw_dir)
1882 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_dir,
1883 internal_strlen(pwd->pw_dir) + 1);
1884 if (pwd->pw_shell)
1885 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_shell,
1886 internal_strlen(pwd->pw_shell) + 1);
1887 }
1888}
1889
1890UNUSED static void unpoison_group(void *ctx, __sanitizer_group *grp) {
1891 if (grp) {
1892 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, sizeof(*grp));
1893 if (grp->gr_name)
1894 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_name,
1895 internal_strlen(grp->gr_name) + 1);
1896 if (grp->gr_passwd)
1897 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_passwd,
1898 internal_strlen(grp->gr_passwd) + 1);
1899 char **p = grp->gr_mem;
1900 for (; *p; ++p) {
1901 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1);
1902 }
1903 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_mem,
1904 (p - grp->gr_mem + 1) * sizeof(*p));
1905 }
1906}
1907#endif // SANITIZER_POSIX
1908
1909#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS
1910INTERCEPTOR(__sanitizer_passwd *, getpwnam, const char *name) {
1911 void *ctx;
1912 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name);
1913 if (name)
1914 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
1915 __sanitizer_passwd *res = REAL(getpwnam)(name);
1916 unpoison_passwd(ctx, pwd: res);
1917 return res;
1918}
1919INTERCEPTOR(__sanitizer_passwd *, getpwuid, u32 uid) {
1920 void *ctx;
1921 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid);
1922 __sanitizer_passwd *res = REAL(getpwuid)(uid);
1923 unpoison_passwd(ctx, pwd: res);
1924 return res;
1925}
1926INTERCEPTOR(__sanitizer_group *, getgrnam, const char *name) {
1927 void *ctx;
1928 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam, name);
1929 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
1930 __sanitizer_group *res = REAL(getgrnam)(name);
1931 unpoison_group(ctx, grp: res);
1932 return res;
1933}
1934INTERCEPTOR(__sanitizer_group *, getgrgid, u32 gid) {
1935 void *ctx;
1936 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid);
1937 __sanitizer_group *res = REAL(getgrgid)(gid);
1938 unpoison_group(ctx, grp: res);
1939 return res;
1940}
1941#define INIT_GETPWNAM_AND_FRIENDS \
1942 COMMON_INTERCEPT_FUNCTION(getpwnam); \
1943 COMMON_INTERCEPT_FUNCTION(getpwuid); \
1944 COMMON_INTERCEPT_FUNCTION(getgrnam); \
1945 COMMON_INTERCEPT_FUNCTION(getgrgid);
1946#else
1947#define INIT_GETPWNAM_AND_FRIENDS
1948#endif
1949
1950#if SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS
1951INTERCEPTOR(int, getpwnam_r, const char *name, __sanitizer_passwd *pwd,
1952 char *buf, SIZE_T buflen, __sanitizer_passwd **result) {
1953 void *ctx;
1954 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam_r, name, pwd, buf, buflen, result);
1955 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
1956 // FIXME: under ASan the call below may write to freed memory and corrupt
1957 // its metadata. See
1958 // https://github.com/google/sanitizers/issues/321.
1959 int res = REAL(getpwnam_r)(name, pwd, buf, buflen, result);
1960 if (!res && result)
1961 unpoison_passwd(ctx, pwd: *result);
1962 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1963 return res;
1964}
1965INTERCEPTOR(int, getpwuid_r, u32 uid, __sanitizer_passwd *pwd, char *buf,
1966 SIZE_T buflen, __sanitizer_passwd **result) {
1967 void *ctx;
1968 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result);
1969 // FIXME: under ASan the call below may write to freed memory and corrupt
1970 // its metadata. See
1971 // https://github.com/google/sanitizers/issues/321.
1972 int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result);
1973 if (!res && result)
1974 unpoison_passwd(ctx, pwd: *result);
1975 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1976 return res;
1977}
1978INTERCEPTOR(int, getgrnam_r, const char *name, __sanitizer_group *grp,
1979 char *buf, SIZE_T buflen, __sanitizer_group **result) {
1980 void *ctx;
1981 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam_r, name, grp, buf, buflen, result);
1982 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
1983 // FIXME: under ASan the call below may write to freed memory and corrupt
1984 // its metadata. See
1985 // https://github.com/google/sanitizers/issues/321.
1986 int res = REAL(getgrnam_r)(name, grp, buf, buflen, result);
1987 if (!res && result)
1988 unpoison_group(ctx, grp: *result);
1989 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1990 return res;
1991}
1992INTERCEPTOR(int, getgrgid_r, u32 gid, __sanitizer_group *grp, char *buf,
1993 SIZE_T buflen, __sanitizer_group **result) {
1994 void *ctx;
1995 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result);
1996 // FIXME: under ASan the call below may write to freed memory and corrupt
1997 // its metadata. See
1998 // https://github.com/google/sanitizers/issues/321.
1999 int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result);
2000 if (!res && result)
2001 unpoison_group(ctx, grp: *result);
2002 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2003 return res;
2004}
2005#define INIT_GETPWNAM_R_AND_FRIENDS \
2006 COMMON_INTERCEPT_FUNCTION(getpwnam_r); \
2007 COMMON_INTERCEPT_FUNCTION(getpwuid_r); \
2008 COMMON_INTERCEPT_FUNCTION(getgrnam_r); \
2009 COMMON_INTERCEPT_FUNCTION(getgrgid_r);
2010#else
2011#define INIT_GETPWNAM_R_AND_FRIENDS
2012#endif
2013
2014#if SANITIZER_INTERCEPT_GETPWENT
2015INTERCEPTOR(__sanitizer_passwd *, getpwent, int dummy) {
2016 void *ctx;
2017 COMMON_INTERCEPTOR_ENTER(ctx, getpwent, dummy);
2018 __sanitizer_passwd *res = REAL(getpwent)(dummy);
2019 unpoison_passwd(ctx, pwd: res);
2020 return res;
2021}
2022INTERCEPTOR(__sanitizer_group *, getgrent, int dummy) {
2023 void *ctx;
2024 COMMON_INTERCEPTOR_ENTER(ctx, getgrent, dummy);
2025 __sanitizer_group *res = REAL(getgrent)(dummy);
2026 unpoison_group(ctx, grp: res);
2027 return res;
2028}
2029#define INIT_GETPWENT \
2030 COMMON_INTERCEPT_FUNCTION(getpwent); \
2031 COMMON_INTERCEPT_FUNCTION(getgrent);
2032#else
2033#define INIT_GETPWENT
2034#endif
2035
2036#if SANITIZER_INTERCEPT_FGETPWENT
2037INTERCEPTOR(__sanitizer_passwd *, fgetpwent, void *fp) {
2038 void *ctx;
2039 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent, fp);
2040 __sanitizer_passwd *res = REAL(fgetpwent)(fp);
2041 unpoison_passwd(ctx, pwd: res);
2042 return res;
2043}
2044INTERCEPTOR(__sanitizer_group *, fgetgrent, void *fp) {
2045 void *ctx;
2046 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent, fp);
2047 __sanitizer_group *res = REAL(fgetgrent)(fp);
2048 unpoison_group(ctx, grp: res);
2049 return res;
2050}
2051#define INIT_FGETPWENT \
2052 COMMON_INTERCEPT_FUNCTION(fgetpwent); \
2053 COMMON_INTERCEPT_FUNCTION(fgetgrent);
2054#else
2055#define INIT_FGETPWENT
2056#endif
2057
2058#if SANITIZER_INTERCEPT_GETPWENT_R
2059INTERCEPTOR(int, getpwent_r, __sanitizer_passwd *pwbuf, char *buf,
2060 SIZE_T buflen, __sanitizer_passwd **pwbufp) {
2061 void *ctx;
2062 COMMON_INTERCEPTOR_ENTER(ctx, getpwent_r, pwbuf, buf, buflen, pwbufp);
2063 // FIXME: under ASan the call below may write to freed memory and corrupt
2064 // its metadata. See
2065 // https://github.com/google/sanitizers/issues/321.
2066 int res = REAL(getpwent_r)(pwbuf, buf, buflen, pwbufp);
2067 if (!res && pwbufp)
2068 unpoison_passwd(ctx, pwd: *pwbufp);
2069 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2070 return res;
2071}
2072INTERCEPTOR(int, getgrent_r, __sanitizer_group *pwbuf, char *buf, SIZE_T buflen,
2073 __sanitizer_group **pwbufp) {
2074 void *ctx;
2075 COMMON_INTERCEPTOR_ENTER(ctx, getgrent_r, pwbuf, buf, buflen, pwbufp);
2076 // FIXME: under ASan the call below may write to freed memory and corrupt
2077 // its metadata. See
2078 // https://github.com/google/sanitizers/issues/321.
2079 int res = REAL(getgrent_r)(pwbuf, buf, buflen, pwbufp);
2080 if (!res && pwbufp)
2081 unpoison_group(ctx, grp: *pwbufp);
2082 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2083 return res;
2084}
2085#define INIT_GETPWENT_R \
2086 COMMON_INTERCEPT_FUNCTION(getpwent_r); \
2087 COMMON_INTERCEPT_FUNCTION(getgrent_r);
2088#else
2089#define INIT_GETPWENT_R
2090#endif
2091
2092#if SANITIZER_INTERCEPT_FGETPWENT_R
2093INTERCEPTOR(int, fgetpwent_r, void *fp, __sanitizer_passwd *pwbuf, char *buf,
2094 SIZE_T buflen, __sanitizer_passwd **pwbufp) {
2095 void *ctx;
2096 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent_r, fp, pwbuf, buf, buflen, pwbufp);
2097 // FIXME: under ASan the call below may write to freed memory and corrupt
2098 // its metadata. See
2099 // https://github.com/google/sanitizers/issues/321.
2100 int res = REAL(fgetpwent_r)(fp, pwbuf, buf, buflen, pwbufp);
2101 if (!res && pwbufp)
2102 unpoison_passwd(ctx, pwd: *pwbufp);
2103 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2104 return res;
2105}
2106#define INIT_FGETPWENT_R \
2107 COMMON_INTERCEPT_FUNCTION(fgetpwent_r);
2108#else
2109#define INIT_FGETPWENT_R
2110#endif
2111
2112#if SANITIZER_INTERCEPT_FGETGRENT_R
2113INTERCEPTOR(int, fgetgrent_r, void *fp, __sanitizer_group *pwbuf, char *buf,
2114 SIZE_T buflen, __sanitizer_group **pwbufp) {
2115 void *ctx;
2116 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent_r, fp, pwbuf, buf, buflen, pwbufp);
2117 // FIXME: under ASan the call below may write to freed memory and corrupt
2118 // its metadata. See
2119 // https://github.com/google/sanitizers/issues/321.
2120 int res = REAL(fgetgrent_r)(fp, pwbuf, buf, buflen, pwbufp);
2121 if (!res && pwbufp)
2122 unpoison_group(ctx, grp: *pwbufp);
2123 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
2124 return res;
2125}
2126#define INIT_FGETGRENT_R \
2127 COMMON_INTERCEPT_FUNCTION(fgetgrent_r);
2128#else
2129#define INIT_FGETGRENT_R
2130#endif
2131
2132#if SANITIZER_INTERCEPT_SETPWENT
2133// The only thing these interceptors do is disable any nested interceptors.
2134// These functions may open nss modules and call uninstrumented functions from
2135// them, and we don't want things like strlen() to trigger.
2136INTERCEPTOR(void, setpwent, int dummy) {
2137 void *ctx;
2138 COMMON_INTERCEPTOR_ENTER(ctx, setpwent, dummy);
2139 REAL(setpwent)(dummy);
2140}
2141INTERCEPTOR(void, endpwent, int dummy) {
2142 void *ctx;
2143 COMMON_INTERCEPTOR_ENTER(ctx, endpwent, dummy);
2144 REAL(endpwent)(dummy);
2145}
2146INTERCEPTOR(void, setgrent, int dummy) {
2147 void *ctx;
2148 COMMON_INTERCEPTOR_ENTER(ctx, setgrent, dummy);
2149 REAL(setgrent)(dummy);
2150}
2151INTERCEPTOR(void, endgrent, int dummy) {
2152 void *ctx;
2153 COMMON_INTERCEPTOR_ENTER(ctx, endgrent, dummy);
2154 REAL(endgrent)(dummy);
2155}
2156#define INIT_SETPWENT \
2157 COMMON_INTERCEPT_FUNCTION(setpwent); \
2158 COMMON_INTERCEPT_FUNCTION(endpwent); \
2159 COMMON_INTERCEPT_FUNCTION(setgrent); \
2160 COMMON_INTERCEPT_FUNCTION(endgrent);
2161#else
2162#define INIT_SETPWENT
2163#endif
2164
2165#if SANITIZER_INTERCEPT_CLOCK_GETTIME
2166INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) {
2167 void *ctx;
2168 COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp);
2169 // FIXME: under ASan the call below may write to freed memory and corrupt
2170 // its metadata. See
2171 // https://github.com/google/sanitizers/issues/321.
2172 int res = REAL(clock_getres)(clk_id, tp);
2173 if (!res && tp) {
2174 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
2175 }
2176 return res;
2177}
2178INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) {
2179 void *ctx;
2180 COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp);
2181 // FIXME: under ASan the call below may write to freed memory and corrupt
2182 // its metadata. See
2183 // https://github.com/google/sanitizers/issues/321.
2184 int res = REAL(clock_gettime)(clk_id, tp);
2185 if (!res) {
2186 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
2187 }
2188 return res;
2189}
2190#if SANITIZER_GLIBC
2191namespace __sanitizer {
2192extern "C" {
2193int real_clock_gettime(u32 clk_id, void *tp) {
2194 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
2195 return internal_clock_gettime(clk_id, tp);
2196 return REAL(clock_gettime)(clk_id, tp);
2197}
2198} // extern "C"
2199} // namespace __sanitizer
2200#endif
2201INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) {
2202 void *ctx;
2203 COMMON_INTERCEPTOR_ENTER(ctx, clock_settime, clk_id, tp);
2204 COMMON_INTERCEPTOR_READ_RANGE(ctx, tp, struct_timespec_sz);
2205 return REAL(clock_settime)(clk_id, tp);
2206}
2207#define INIT_CLOCK_GETTIME \
2208 COMMON_INTERCEPT_FUNCTION(clock_getres); \
2209 COMMON_INTERCEPT_FUNCTION(clock_gettime); \
2210 COMMON_INTERCEPT_FUNCTION(clock_settime);
2211#else
2212#define INIT_CLOCK_GETTIME
2213#endif
2214
2215#if SANITIZER_INTERCEPT_CLOCK_GETCPUCLOCKID
2216INTERCEPTOR(int, clock_getcpuclockid, pid_t pid,
2217 __sanitizer_clockid_t *clockid) {
2218 void *ctx;
2219 COMMON_INTERCEPTOR_ENTER(ctx, clock_getcpuclockid, pid, clockid);
2220 int res = REAL(clock_getcpuclockid)(pid, clockid);
2221 if (!res && clockid) {
2222 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid);
2223 }
2224 return res;
2225}
2226
2227INTERCEPTOR(int, pthread_getcpuclockid, uptr thread,
2228 __sanitizer_clockid_t *clockid) {
2229 void *ctx;
2230 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getcpuclockid, thread, clockid);
2231 int res = REAL(pthread_getcpuclockid)(thread, clockid);
2232 if (!res && clockid) {
2233 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid);
2234 }
2235 return res;
2236}
2237
2238#define INIT_CLOCK_GETCPUCLOCKID \
2239 COMMON_INTERCEPT_FUNCTION(clock_getcpuclockid); \
2240 COMMON_INTERCEPT_FUNCTION(pthread_getcpuclockid);
2241#else
2242#define INIT_CLOCK_GETCPUCLOCKID
2243#endif
2244
2245#if SANITIZER_INTERCEPT_GETITIMER
2246INTERCEPTOR(int, getitimer, int which, void *curr_value) {
2247 void *ctx;
2248 COMMON_INTERCEPTOR_ENTER(ctx, getitimer, which, curr_value);
2249 // FIXME: under ASan the call below may write to freed memory and corrupt
2250 // its metadata. See
2251 // https://github.com/google/sanitizers/issues/321.
2252 int res = REAL(getitimer)(which, curr_value);
2253 if (!res && curr_value) {
2254 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerval_sz);
2255 }
2256 return res;
2257}
2258INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) {
2259 void *ctx;
2260 COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_value);
2261 if (new_value) {
2262 // itimerval can contain padding that may be legitimately uninitialized
2263 const struct __sanitizer_itimerval *nv =
2264 (const struct __sanitizer_itimerval *)new_value;
2265 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_sec,
2266 sizeof(__sanitizer_time_t));
2267 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_usec,
2268 sizeof(__sanitizer_suseconds_t));
2269 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_sec,
2270 sizeof(__sanitizer_time_t));
2271 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_usec,
2272 sizeof(__sanitizer_suseconds_t));
2273 }
2274 // FIXME: under ASan the call below may write to freed memory and corrupt
2275 // its metadata. See
2276 // https://github.com/google/sanitizers/issues/321.
2277 int res = REAL(setitimer)(which, new_value, old_value);
2278 if (!res && old_value) {
2279 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerval_sz);
2280 }
2281 return res;
2282}
2283#define INIT_GETITIMER \
2284 COMMON_INTERCEPT_FUNCTION(getitimer); \
2285 COMMON_INTERCEPT_FUNCTION(setitimer);
2286#else
2287#define INIT_GETITIMER
2288#endif
2289
2290#if SANITIZER_INTERCEPT_GLOB
2291static void unpoison_glob_t(void *ctx, __sanitizer_glob_t *pglob) {
2292 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pglob, sizeof(*pglob));
2293 // +1 for NULL pointer at the end.
2294 if (pglob->gl_pathv)
2295 COMMON_INTERCEPTOR_WRITE_RANGE(
2296 ctx, pglob->gl_pathv, (pglob->gl_pathc + 1) * sizeof(*pglob->gl_pathv));
2297 for (SIZE_T i = 0; i < pglob->gl_pathc; ++i) {
2298 char *p = pglob->gl_pathv[i];
2299 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, internal_strlen(p) + 1);
2300 }
2301}
2302
2303#if SANITIZER_SOLARIS
2304INTERCEPTOR(int, glob, const char *pattern, int flags,
2305 int (*errfunc)(const char *epath, int eerrno),
2306 __sanitizer_glob_t *pglob) {
2307 void *ctx;
2308 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob);
2309 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0);
2310 int res = REAL(glob)(pattern, flags, errfunc, pglob);
2311 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
2312 return res;
2313}
2314#else
2315static THREADLOCAL __sanitizer_glob_t *pglob_copy;
2316
2317static void wrapped_gl_closedir(void *dir) {
2318 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2319 pglob_copy->gl_closedir(dir);
2320}
2321
2322static void *wrapped_gl_readdir(void *dir) {
2323 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2324 return pglob_copy->gl_readdir(dir);
2325}
2326
2327static void *wrapped_gl_opendir(const char *s) {
2328 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2329 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1);
2330 return pglob_copy->gl_opendir(s);
2331}
2332
2333static int wrapped_gl_lstat(const char *s, void *st) {
2334 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
2335 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1);
2336 return pglob_copy->gl_lstat(s, st);
2337}
2338
2339static int wrapped_gl_stat(const char *s, void *st) {
2340 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
2341 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1);
2342 return pglob_copy->gl_stat(s, st);
2343}
2344
2345static const __sanitizer_glob_t kGlobCopy = {
2346 .gl_pathc: 0, .gl_pathv: 0, .gl_offs: 0,
2347 .gl_flags: 0, .gl_closedir: wrapped_gl_closedir, .gl_readdir: wrapped_gl_readdir,
2348 .gl_opendir: wrapped_gl_opendir, .gl_lstat: wrapped_gl_lstat, .gl_stat: wrapped_gl_stat};
2349
2350INTERCEPTOR(int, glob, const char *pattern, int flags,
2351 int (*errfunc)(const char *epath, int eerrno),
2352 __sanitizer_glob_t *pglob) {
2353 void *ctx;
2354 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob);
2355 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0);
2356 __sanitizer_glob_t glob_copy;
2357 internal_memcpy(dest: &glob_copy, src: &kGlobCopy, n: sizeof(glob_copy));
2358 if (flags & glob_altdirfunc) {
2359 Swap(a&: pglob->gl_closedir, b&: glob_copy.gl_closedir);
2360 Swap(a&: pglob->gl_readdir, b&: glob_copy.gl_readdir);
2361 Swap(a&: pglob->gl_opendir, b&: glob_copy.gl_opendir);
2362 Swap(a&: pglob->gl_lstat, b&: glob_copy.gl_lstat);
2363 Swap(a&: pglob->gl_stat, b&: glob_copy.gl_stat);
2364 pglob_copy = &glob_copy;
2365 }
2366 int res = REAL(glob)(pattern, flags, errfunc, pglob);
2367 if (flags & glob_altdirfunc) {
2368 Swap(a&: pglob->gl_closedir, b&: glob_copy.gl_closedir);
2369 Swap(a&: pglob->gl_readdir, b&: glob_copy.gl_readdir);
2370 Swap(a&: pglob->gl_opendir, b&: glob_copy.gl_opendir);
2371 Swap(a&: pglob->gl_lstat, b&: glob_copy.gl_lstat);
2372 Swap(a&: pglob->gl_stat, b&: glob_copy.gl_stat);
2373 }
2374 pglob_copy = 0;
2375 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
2376 return res;
2377}
2378#endif // SANITIZER_SOLARIS
2379#define INIT_GLOB \
2380 COMMON_INTERCEPT_FUNCTION(glob);
2381#else // SANITIZER_INTERCEPT_GLOB
2382#define INIT_GLOB
2383#endif // SANITIZER_INTERCEPT_GLOB
2384
2385#if SANITIZER_INTERCEPT_GLOB64
2386INTERCEPTOR(int, glob64, const char *pattern, int flags,
2387 int (*errfunc)(const char *epath, int eerrno),
2388 __sanitizer_glob_t *pglob) {
2389 void *ctx;
2390 COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob);
2391 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0);
2392 __sanitizer_glob_t glob_copy;
2393 internal_memcpy(dest: &glob_copy, src: &kGlobCopy, n: sizeof(glob_copy));
2394 if (flags & glob_altdirfunc) {
2395 Swap(a&: pglob->gl_closedir, b&: glob_copy.gl_closedir);
2396 Swap(a&: pglob->gl_readdir, b&: glob_copy.gl_readdir);
2397 Swap(a&: pglob->gl_opendir, b&: glob_copy.gl_opendir);
2398 Swap(a&: pglob->gl_lstat, b&: glob_copy.gl_lstat);
2399 Swap(a&: pglob->gl_stat, b&: glob_copy.gl_stat);
2400 pglob_copy = &glob_copy;
2401 }
2402 int res = REAL(glob64)(pattern, flags, errfunc, pglob);
2403 if (flags & glob_altdirfunc) {
2404 Swap(a&: pglob->gl_closedir, b&: glob_copy.gl_closedir);
2405 Swap(a&: pglob->gl_readdir, b&: glob_copy.gl_readdir);
2406 Swap(a&: pglob->gl_opendir, b&: glob_copy.gl_opendir);
2407 Swap(a&: pglob->gl_lstat, b&: glob_copy.gl_lstat);
2408 Swap(a&: pglob->gl_stat, b&: glob_copy.gl_stat);
2409 }
2410 pglob_copy = 0;
2411 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
2412 return res;
2413}
2414#define INIT_GLOB64 \
2415 COMMON_INTERCEPT_FUNCTION(glob64);
2416#else // SANITIZER_INTERCEPT_GLOB64
2417#define INIT_GLOB64
2418#endif // SANITIZER_INTERCEPT_GLOB64
2419
2420#if SANITIZER_INTERCEPT___B64_TO
2421INTERCEPTOR(int, __b64_ntop, unsigned char const *src, SIZE_T srclength,
2422 char *target, SIZE_T targsize) {
2423 void *ctx;
2424 COMMON_INTERCEPTOR_ENTER(ctx, __b64_ntop, src, srclength, target, targsize);
2425 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, srclength);
2426 int res = REAL(__b64_ntop)(src, srclength, target, targsize);
2427 if (res >= 0)
2428 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res + 1);
2429 return res;
2430}
2431INTERCEPTOR(int, __b64_pton, char const *src, char *target, SIZE_T targsize) {
2432 void *ctx;
2433 COMMON_INTERCEPTOR_ENTER(ctx, __b64_pton, src, target, targsize);
2434 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
2435 int res = REAL(__b64_pton)(src, target, targsize);
2436 if (res >= 0)
2437 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res);
2438 return res;
2439}
2440#define INIT___B64_TO \
2441 COMMON_INTERCEPT_FUNCTION(__b64_ntop); \
2442 COMMON_INTERCEPT_FUNCTION(__b64_pton);
2443#else // SANITIZER_INTERCEPT___B64_TO
2444#define INIT___B64_TO
2445#endif // SANITIZER_INTERCEPT___B64_TO
2446
2447#if SANITIZER_INTERCEPT_DN_COMP_EXPAND
2448# if __GLIBC_PREREQ(2, 34)
2449// Changed with https://sourceware.org/git/?p=glibc.git;h=640bbdf
2450# define DN_COMP_INTERCEPTOR_NAME dn_comp
2451# define DN_EXPAND_INTERCEPTOR_NAME dn_expand
2452# else
2453# define DN_COMP_INTERCEPTOR_NAME __dn_comp
2454# define DN_EXPAND_INTERCEPTOR_NAME __dn_expand
2455# endif
2456INTERCEPTOR(int, DN_COMP_INTERCEPTOR_NAME, unsigned char *exp_dn,
2457 unsigned char *comp_dn, int length, unsigned char **dnptrs,
2458 unsigned char **lastdnptr) {
2459 void *ctx;
2460 COMMON_INTERCEPTOR_ENTER(ctx, DN_COMP_INTERCEPTOR_NAME, exp_dn, comp_dn,
2461 length, dnptrs, lastdnptr);
2462 int res = REAL(DN_COMP_INTERCEPTOR_NAME)(exp_dn, comp_dn, length, dnptrs,
2463 lastdnptr);
2464 if (res >= 0) {
2465 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, comp_dn, res);
2466 if (dnptrs && lastdnptr) {
2467 unsigned char **p = dnptrs;
2468 for (; p != lastdnptr && *p; ++p)
2469 ;
2470 if (p != lastdnptr)
2471 ++p;
2472 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dnptrs, (p - dnptrs) * sizeof(*p));
2473 }
2474 }
2475 return res;
2476}
2477INTERCEPTOR(int, DN_EXPAND_INTERCEPTOR_NAME, unsigned char const *base,
2478 unsigned char const *end, unsigned char const *src, char *dest,
2479 int space) {
2480 void *ctx;
2481 COMMON_INTERCEPTOR_ENTER(ctx, DN_EXPAND_INTERCEPTOR_NAME, base, end, src,
2482 dest, space);
2483 // TODO: add read check if __dn_comp intercept added
2484 int res = REAL(DN_EXPAND_INTERCEPTOR_NAME)(base, end, src, dest, space);
2485 if (res >= 0)
2486 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, internal_strlen(dest) + 1);
2487 return res;
2488}
2489# define INIT_DN_COMP_EXPAND \
2490 COMMON_INTERCEPT_FUNCTION(DN_COMP_INTERCEPTOR_NAME); \
2491 COMMON_INTERCEPT_FUNCTION(DN_EXPAND_INTERCEPTOR_NAME);
2492#else // SANITIZER_INTERCEPT_DN_COMP_EXPAND
2493# define INIT_DN_COMP_EXPAND
2494#endif // SANITIZER_INTERCEPT_DN_COMP_EXPAND
2495
2496#if SANITIZER_INTERCEPT_POSIX_SPAWN
2497
2498template <class RealSpawnPtr>
2499static int PosixSpawnImpl(void *ctx, RealSpawnPtr *real_posix_spawn, pid_t *pid,
2500 const char *file_or_path, const void *file_actions,
2501 const void *attrp, char *const argv[],
2502 char *const envp[]) {
2503 COMMON_INTERCEPTOR_READ_RANGE(ctx, file_or_path,
2504 internal_strlen(file_or_path) + 1);
2505 if (argv) {
2506 for (char *const *s = argv; ; ++s) {
2507 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s));
2508 if (!*s) break;
2509 COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1);
2510 }
2511 }
2512 if (envp) {
2513 for (char *const *s = envp; ; ++s) {
2514 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s));
2515 if (!*s) break;
2516 COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1);
2517 }
2518 }
2519 int res =
2520 real_posix_spawn(pid, file_or_path, file_actions, attrp, argv, envp);
2521 if (res == 0)
2522 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pid, sizeof(*pid));
2523 return res;
2524}
2525INTERCEPTOR(int, posix_spawn, pid_t *pid, const char *path,
2526 const void *file_actions, const void *attrp, char *const argv[],
2527 char *const envp[]) {
2528 void *ctx;
2529 COMMON_INTERCEPTOR_ENTER(ctx, posix_spawn, pid, path, file_actions, attrp,
2530 argv, envp);
2531 return PosixSpawnImpl(ctx, REAL(posix_spawn), pid, file_or_path: path, file_actions, attrp,
2532 argv, envp);
2533}
2534INTERCEPTOR(int, posix_spawnp, pid_t *pid, const char *file,
2535 const void *file_actions, const void *attrp, char *const argv[],
2536 char *const envp[]) {
2537 void *ctx;
2538 COMMON_INTERCEPTOR_ENTER(ctx, posix_spawnp, pid, file, file_actions, attrp,
2539 argv, envp);
2540 return PosixSpawnImpl(ctx, REAL(posix_spawnp), pid, file_or_path: file, file_actions, attrp,
2541 argv, envp);
2542}
2543# define INIT_POSIX_SPAWN \
2544 COMMON_INTERCEPT_FUNCTION(posix_spawn); \
2545 COMMON_INTERCEPT_FUNCTION(posix_spawnp);
2546#else // SANITIZER_INTERCEPT_POSIX_SPAWN
2547# define INIT_POSIX_SPAWN
2548#endif // SANITIZER_INTERCEPT_POSIX_SPAWN
2549
2550#if SANITIZER_INTERCEPT_WAIT
2551// According to sys/wait.h, wait(), waitid(), waitpid() may have symbol version
2552// suffixes on Darwin. See the declaration of INTERCEPTOR_WITH_SUFFIX for
2553// details.
2554INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) {
2555 void *ctx;
2556 COMMON_INTERCEPTOR_ENTER(ctx, wait, status);
2557 // FIXME: under ASan the call below may write to freed memory and corrupt
2558 // its metadata. See
2559 // https://github.com/google/sanitizers/issues/321.
2560 int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait)(status);
2561 if (res != -1 && status)
2562 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2563 return res;
2564}
2565// On FreeBSD id_t is always 64-bit wide.
2566#if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32)
2567INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, long long id, void *infop,
2568 int options) {
2569#else
2570INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop,
2571 int options) {
2572#endif
2573 void *ctx;
2574 COMMON_INTERCEPTOR_ENTER(ctx, waitid, idtype, id, infop, options);
2575 // FIXME: under ASan the call below may write to freed memory and corrupt
2576 // its metadata. See
2577 // https://github.com/google/sanitizers/issues/321.
2578 int res = COMMON_INTERCEPTOR_BLOCK_REAL(waitid)(idtype, id, infop, options);
2579 if (res != -1 && infop)
2580 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, infop, siginfo_t_sz);
2581 return res;
2582}
2583INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) {
2584 void *ctx;
2585 COMMON_INTERCEPTOR_ENTER(ctx, waitpid, pid, status, options);
2586 // FIXME: under ASan the call below may write to freed memory and corrupt
2587 // its metadata. See
2588 // https://github.com/google/sanitizers/issues/321.
2589 int res = COMMON_INTERCEPTOR_BLOCK_REAL(waitpid)(pid, status, options);
2590 if (res != -1 && status)
2591 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2592 return res;
2593}
2594INTERCEPTOR(int, wait3, int *status, int options, void *rusage) {
2595 void *ctx;
2596 COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage);
2597 // FIXME: under ASan the call below may write to freed memory and corrupt
2598 // its metadata. See
2599 // https://github.com/google/sanitizers/issues/321.
2600 int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait3)(status, options, rusage);
2601 if (res != -1) {
2602 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2603 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
2604 }
2605 return res;
2606}
2607#if SANITIZER_ANDROID
2608INTERCEPTOR(int, __wait4, int pid, int *status, int options, void *rusage) {
2609 void *ctx;
2610 COMMON_INTERCEPTOR_ENTER(ctx, __wait4, pid, status, options, rusage);
2611 // FIXME: under ASan the call below may write to freed memory and corrupt
2612 // its metadata. See
2613 // https://github.com/google/sanitizers/issues/321.
2614 int res =
2615 COMMON_INTERCEPTOR_BLOCK_REAL(__wait4)(pid, status, options, rusage);
2616 if (res != -1) {
2617 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2618 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
2619 }
2620 return res;
2621}
2622#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(__wait4);
2623#else
2624INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) {
2625 void *ctx;
2626 COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage);
2627 // FIXME: under ASan the call below may write to freed memory and corrupt
2628 // its metadata. See
2629 // https://github.com/google/sanitizers/issues/321.
2630 int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait4)(pid, status, options, rusage);
2631 if (res != -1) {
2632 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
2633 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
2634 }
2635 return res;
2636}
2637#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(wait4);
2638#endif // SANITIZER_ANDROID
2639#define INIT_WAIT \
2640 COMMON_INTERCEPT_FUNCTION(wait); \
2641 COMMON_INTERCEPT_FUNCTION(waitid); \
2642 COMMON_INTERCEPT_FUNCTION(waitpid); \
2643 COMMON_INTERCEPT_FUNCTION(wait3);
2644#else
2645#define INIT_WAIT
2646#define INIT_WAIT4
2647#endif
2648
2649#if SANITIZER_INTERCEPT_INET
2650INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) {
2651 void *ctx;
2652 COMMON_INTERCEPTOR_ENTER(ctx, inet_ntop, af, src, dst, size);
2653 uptr sz = __sanitizer_in_addr_sz(af);
2654 if (sz) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sz);
2655 // FIXME: figure out read size based on the address family.
2656 // FIXME: under ASan the call below may write to freed memory and corrupt
2657 // its metadata. See
2658 // https://github.com/google/sanitizers/issues/321.
2659 char *res = REAL(inet_ntop)(af, src, dst, size);
2660 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
2661 return res;
2662}
2663INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) {
2664 void *ctx;
2665 COMMON_INTERCEPTOR_ENTER(ctx, inet_pton, af, src, dst);
2666 COMMON_INTERCEPTOR_READ_STRING(ctx, src, 0);
2667 // FIXME: figure out read size based on the address family.
2668 // FIXME: under ASan the call below may write to freed memory and corrupt
2669 // its metadata. See
2670 // https://github.com/google/sanitizers/issues/321.
2671 int res = REAL(inet_pton)(af, src, dst);
2672 if (res == 1) {
2673 uptr sz = __sanitizer_in_addr_sz(af);
2674 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
2675 }
2676 return res;
2677}
2678#define INIT_INET \
2679 COMMON_INTERCEPT_FUNCTION(inet_ntop); \
2680 COMMON_INTERCEPT_FUNCTION(inet_pton);
2681#else
2682#define INIT_INET
2683#endif
2684
2685#if SANITIZER_INTERCEPT_INET
2686INTERCEPTOR(int, inet_aton, const char *cp, void *dst) {
2687 void *ctx;
2688 COMMON_INTERCEPTOR_ENTER(ctx, inet_aton, cp, dst);
2689 if (cp) COMMON_INTERCEPTOR_READ_RANGE(ctx, cp, internal_strlen(cp) + 1);
2690 // FIXME: under ASan the call below may write to freed memory and corrupt
2691 // its metadata. See
2692 // https://github.com/google/sanitizers/issues/321.
2693 int res = REAL(inet_aton)(cp, dst);
2694 if (res != 0) {
2695 uptr sz = __sanitizer_in_addr_sz(af: af_inet);
2696 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
2697 }
2698 return res;
2699}
2700#define INIT_INET_ATON COMMON_INTERCEPT_FUNCTION(inet_aton);
2701#else
2702#define INIT_INET_ATON
2703#endif
2704
2705#if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM
2706INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) {
2707 void *ctx;
2708 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param);
2709 // FIXME: under ASan the call below may write to freed memory and corrupt
2710 // its metadata. See
2711 // https://github.com/google/sanitizers/issues/321.
2712 int res = REAL(pthread_getschedparam)(thread, policy, param);
2713 if (res == 0) {
2714 if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy));
2715 if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param));
2716 }
2717 return res;
2718}
2719#define INIT_PTHREAD_GETSCHEDPARAM \
2720 COMMON_INTERCEPT_FUNCTION(pthread_getschedparam);
2721#else
2722#define INIT_PTHREAD_GETSCHEDPARAM
2723#endif
2724
2725#if SANITIZER_INTERCEPT_GETADDRINFO
2726INTERCEPTOR(int, getaddrinfo, char *node, char *service,
2727 struct __sanitizer_addrinfo *hints,
2728 struct __sanitizer_addrinfo **out) {
2729 void *ctx;
2730 COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out);
2731 if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, internal_strlen(node) + 1);
2732 if (service)
2733 COMMON_INTERCEPTOR_READ_RANGE(ctx, service, internal_strlen(service) + 1);
2734 if (hints)
2735 COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo));
2736 // FIXME: under ASan the call below may write to freed memory and corrupt
2737 // its metadata. See
2738 // https://github.com/google/sanitizers/issues/321.
2739 int res = REAL(getaddrinfo)(node, service, hints, out);
2740 if (res == 0 && out) {
2741 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out));
2742 struct __sanitizer_addrinfo *p = *out;
2743 while (p) {
2744 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
2745 if (p->ai_addr)
2746 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, p->ai_addrlen);
2747 if (p->ai_canonname)
2748 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_canonname,
2749 internal_strlen(p->ai_canonname) + 1);
2750 p = p->ai_next;
2751 }
2752 }
2753 return res;
2754}
2755#define INIT_GETADDRINFO COMMON_INTERCEPT_FUNCTION(getaddrinfo);
2756#else
2757#define INIT_GETADDRINFO
2758#endif
2759
2760#if SANITIZER_INTERCEPT_GETNAMEINFO
2761INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host,
2762 unsigned hostlen, char *serv, unsigned servlen, int flags) {
2763 void *ctx;
2764 COMMON_INTERCEPTOR_ENTER(ctx, getnameinfo, sockaddr, salen, host, hostlen,
2765 serv, servlen, flags);
2766 // FIXME: consider adding READ_RANGE(sockaddr, salen)
2767 // There is padding in in_addr that may make this too noisy
2768 // FIXME: under ASan the call below may write to freed memory and corrupt
2769 // its metadata. See
2770 // https://github.com/google/sanitizers/issues/321.
2771 int res =
2772 REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags);
2773 if (res == 0) {
2774 if (host && hostlen)
2775 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, host, internal_strlen(host) + 1);
2776 if (serv && servlen)
2777 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, serv, internal_strlen(serv) + 1);
2778 }
2779 return res;
2780}
2781#define INIT_GETNAMEINFO COMMON_INTERCEPT_FUNCTION(getnameinfo);
2782#else
2783#define INIT_GETNAMEINFO
2784#endif
2785
2786#if SANITIZER_INTERCEPT_GETSOCKNAME
2787INTERCEPTOR(int, getsockname, int sock_fd, void *addr, unsigned *addrlen) {
2788 void *ctx;
2789 COMMON_INTERCEPTOR_ENTER(ctx, getsockname, sock_fd, addr, addrlen);
2790 unsigned addr_sz;
2791 if (addrlen) {
2792 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
2793 addr_sz = *addrlen;
2794 }
2795 // FIXME: under ASan the call below may write to freed memory and corrupt
2796 // its metadata. See
2797 // https://github.com/google/sanitizers/issues/321.
2798 int res = REAL(getsockname)(sock_fd, addr, addrlen);
2799 if (!res && addr && addrlen) {
2800 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen));
2801 }
2802 return res;
2803}
2804#define INIT_GETSOCKNAME COMMON_INTERCEPT_FUNCTION(getsockname);
2805#else
2806#define INIT_GETSOCKNAME
2807#endif
2808
2809#if SANITIZER_INTERCEPT_GETHOSTBYNAME || SANITIZER_INTERCEPT_GETHOSTBYNAME_R
2810static void write_hostent(void *ctx, struct __sanitizer_hostent *h) {
2811 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h, sizeof(__sanitizer_hostent));
2812 if (h->h_name)
2813 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, internal_strlen(h->h_name) + 1);
2814 char **p = h->h_aliases;
2815 while (*p) {
2816 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1);
2817 ++p;
2818 }
2819 COMMON_INTERCEPTOR_WRITE_RANGE(
2820 ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases));
2821 p = h->h_addr_list;
2822 while (*p) {
2823 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length);
2824 ++p;
2825 }
2826 COMMON_INTERCEPTOR_WRITE_RANGE(
2827 ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list));
2828}
2829#endif
2830
2831#if SANITIZER_INTERCEPT_GETHOSTBYNAME
2832INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) {
2833 void *ctx;
2834 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name);
2835 struct __sanitizer_hostent *res = REAL(gethostbyname)(name);
2836 if (res) write_hostent(ctx, h: res);
2837 return res;
2838}
2839
2840INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len,
2841 int type) {
2842 void *ctx;
2843 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr, addr, len, type);
2844 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
2845 struct __sanitizer_hostent *res = REAL(gethostbyaddr)(addr, len, type);
2846 if (res) write_hostent(ctx, h: res);
2847 return res;
2848}
2849
2850INTERCEPTOR(struct __sanitizer_hostent *, gethostent, int fake) {
2851 void *ctx;
2852 COMMON_INTERCEPTOR_ENTER(ctx, gethostent, fake);
2853 struct __sanitizer_hostent *res = REAL(gethostent)(fake);
2854 if (res) write_hostent(ctx, h: res);
2855 return res;
2856}
2857#define INIT_GETHOSTBYNAME \
2858 COMMON_INTERCEPT_FUNCTION(gethostent); \
2859 COMMON_INTERCEPT_FUNCTION(gethostbyaddr); \
2860 COMMON_INTERCEPT_FUNCTION(gethostbyname);
2861#else
2862#define INIT_GETHOSTBYNAME
2863#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME
2864
2865#if SANITIZER_INTERCEPT_GETHOSTBYNAME2
2866INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) {
2867 void *ctx;
2868 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af);
2869 struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af);
2870 if (res) write_hostent(ctx, h: res);
2871 return res;
2872}
2873#define INIT_GETHOSTBYNAME2 COMMON_INTERCEPT_FUNCTION(gethostbyname2);
2874#else
2875#define INIT_GETHOSTBYNAME2
2876#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME2
2877
2878#if SANITIZER_INTERCEPT_GETHOSTBYNAME_R
2879INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret,
2880 char *buf, SIZE_T buflen, __sanitizer_hostent **result,
2881 int *h_errnop) {
2882 void *ctx;
2883 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result,
2884 h_errnop);
2885 // FIXME: under ASan the call below may write to freed memory and corrupt
2886 // its metadata. See
2887 // https://github.com/google/sanitizers/issues/321.
2888 int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop);
2889 if (result) {
2890 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2891 if (res == 0 && *result) write_hostent(ctx, h: *result);
2892 }
2893 if (h_errnop)
2894 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
2895 return res;
2896}
2897#define INIT_GETHOSTBYNAME_R COMMON_INTERCEPT_FUNCTION(gethostbyname_r);
2898#else
2899#define INIT_GETHOSTBYNAME_R
2900#endif
2901
2902#if SANITIZER_INTERCEPT_GETHOSTENT_R
2903INTERCEPTOR(int, gethostent_r, struct __sanitizer_hostent *ret, char *buf,
2904 SIZE_T buflen, __sanitizer_hostent **result, int *h_errnop) {
2905 void *ctx;
2906 COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result,
2907 h_errnop);
2908 // FIXME: under ASan the call below may write to freed memory and corrupt
2909 // its metadata. See
2910 // https://github.com/google/sanitizers/issues/321.
2911 int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop);
2912 if (result) {
2913 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2914 if (res == 0 && *result) write_hostent(ctx, h: *result);
2915 }
2916 if (h_errnop)
2917 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
2918 return res;
2919}
2920#define INIT_GETHOSTENT_R \
2921 COMMON_INTERCEPT_FUNCTION(gethostent_r);
2922#else
2923#define INIT_GETHOSTENT_R
2924#endif
2925
2926#if SANITIZER_INTERCEPT_GETHOSTBYADDR_R
2927INTERCEPTOR(int, gethostbyaddr_r, void *addr, int len, int type,
2928 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
2929 __sanitizer_hostent **result, int *h_errnop) {
2930 void *ctx;
2931 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr_r, addr, len, type, ret, buf,
2932 buflen, result, h_errnop);
2933 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
2934 // FIXME: under ASan the call below may write to freed memory and corrupt
2935 // its metadata. See
2936 // https://github.com/google/sanitizers/issues/321.
2937 int res = REAL(gethostbyaddr_r)(addr, len, type, ret, buf, buflen, result,
2938 h_errnop);
2939 if (result) {
2940 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2941 if (res == 0 && *result) write_hostent(ctx, h: *result);
2942 }
2943 if (h_errnop)
2944 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
2945 return res;
2946}
2947#define INIT_GETHOSTBYADDR_R \
2948 COMMON_INTERCEPT_FUNCTION(gethostbyaddr_r);
2949#else
2950#define INIT_GETHOSTBYADDR_R
2951#endif
2952
2953#if SANITIZER_INTERCEPT_GETHOSTBYNAME2_R
2954INTERCEPTOR(int, gethostbyname2_r, char *name, int af,
2955 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
2956 __sanitizer_hostent **result, int *h_errnop) {
2957 void *ctx;
2958 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen,
2959 result, h_errnop);
2960 // FIXME: under ASan the call below may write to freed memory and corrupt
2961 // its metadata. See
2962 // https://github.com/google/sanitizers/issues/321.
2963 int res =
2964 REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop);
2965 if (result) {
2966 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2967 if (res == 0 && *result) write_hostent(ctx, h: *result);
2968 }
2969 if (h_errnop)
2970 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
2971 return res;
2972}
2973#define INIT_GETHOSTBYNAME2_R \
2974 COMMON_INTERCEPT_FUNCTION(gethostbyname2_r);
2975#else
2976#define INIT_GETHOSTBYNAME2_R
2977#endif
2978
2979#if SANITIZER_INTERCEPT_GETSOCKOPT
2980INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval,
2981 int *optlen) {
2982 void *ctx;
2983 COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval,
2984 optlen);
2985 if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen));
2986 // FIXME: under ASan the call below may write to freed memory and corrupt
2987 // its metadata. See
2988 // https://github.com/google/sanitizers/issues/321.
2989 int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen);
2990 if (res == 0)
2991 if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen);
2992 return res;
2993}
2994#define INIT_GETSOCKOPT COMMON_INTERCEPT_FUNCTION(getsockopt);
2995#else
2996#define INIT_GETSOCKOPT
2997#endif
2998
2999#if SANITIZER_INTERCEPT_ACCEPT
3000INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) {
3001 void *ctx;
3002 COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen);
3003 unsigned addrlen0 = 0;
3004 if (addrlen) {
3005 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3006 addrlen0 = *addrlen;
3007 }
3008 int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(accept)(fd, addr, addrlen);
3009 if (fd2 >= 0) {
3010 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
3011 if (addr && addrlen)
3012 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
3013 }
3014 return fd2;
3015}
3016#define INIT_ACCEPT COMMON_INTERCEPT_FUNCTION(accept);
3017#else
3018#define INIT_ACCEPT
3019#endif
3020
3021#if SANITIZER_INTERCEPT_ACCEPT4
3022INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) {
3023 void *ctx;
3024 COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f);
3025 unsigned addrlen0 = 0;
3026 if (addrlen) {
3027 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3028 addrlen0 = *addrlen;
3029 }
3030 // FIXME: under ASan the call below may write to freed memory and corrupt
3031 // its metadata. See
3032 // https://github.com/google/sanitizers/issues/321.
3033 int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(accept4)(fd, addr, addrlen, f);
3034 if (fd2 >= 0) {
3035 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
3036 if (addr && addrlen)
3037 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
3038 }
3039 return fd2;
3040}
3041#define INIT_ACCEPT4 COMMON_INTERCEPT_FUNCTION(accept4);
3042#else
3043#define INIT_ACCEPT4
3044#endif
3045
3046#if SANITIZER_INTERCEPT_PACCEPT
3047INTERCEPTOR(int, paccept, int fd, void *addr, unsigned *addrlen,
3048 __sanitizer_sigset_t *set, int f) {
3049 void *ctx;
3050 COMMON_INTERCEPTOR_ENTER(ctx, paccept, fd, addr, addrlen, set, f);
3051 unsigned addrlen0 = 0;
3052 if (addrlen) {
3053 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3054 addrlen0 = *addrlen;
3055 }
3056 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
3057 int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(paccept)(fd, addr, addrlen, set, f);
3058 if (fd2 >= 0) {
3059 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
3060 if (addr && addrlen)
3061 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
3062 }
3063 return fd2;
3064}
3065#define INIT_PACCEPT COMMON_INTERCEPT_FUNCTION(paccept);
3066#else
3067#define INIT_PACCEPT
3068#endif
3069
3070#if SANITIZER_INTERCEPT_MODF
3071INTERCEPTOR(double, modf, double x, double *iptr) {
3072 void *ctx;
3073 COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr);
3074 // FIXME: under ASan the call below may write to freed memory and corrupt
3075 // its metadata. See
3076 // https://github.com/google/sanitizers/issues/321.
3077 double res = REAL(modf)(x, iptr);
3078 if (iptr) {
3079 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
3080 }
3081 return res;
3082}
3083INTERCEPTOR(float, modff, float x, float *iptr) {
3084 void *ctx;
3085 COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr);
3086 // FIXME: under ASan the call below may write to freed memory and corrupt
3087 // its metadata. See
3088 // https://github.com/google/sanitizers/issues/321.
3089 float res = REAL(modff)(x, iptr);
3090 if (iptr) {
3091 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
3092 }
3093 return res;
3094}
3095INTERCEPTOR(long double, modfl, long double x, long double *iptr) {
3096 void *ctx;
3097 COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr);
3098 // FIXME: under ASan the call below may write to freed memory and corrupt
3099 // its metadata. See
3100 // https://github.com/google/sanitizers/issues/321.
3101 long double res = REAL(modfl)(x, iptr);
3102 if (iptr) {
3103 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
3104 }
3105 return res;
3106}
3107#define INIT_MODF \
3108 COMMON_INTERCEPT_FUNCTION(modf); \
3109 COMMON_INTERCEPT_FUNCTION(modff); \
3110 COMMON_INTERCEPT_FUNCTION_LDBL(modfl);
3111#else
3112#define INIT_MODF
3113#endif
3114
3115#if SANITIZER_INTERCEPT_RECVMSG || SANITIZER_INTERCEPT_RECVMMSG
3116static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg,
3117 SSIZE_T maxlen) {
3118 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg, sizeof(*msg));
3119 if (msg->msg_name && msg->msg_namelen)
3120 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_name, msg->msg_namelen);
3121 if (msg->msg_iov && msg->msg_iovlen)
3122 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_iov,
3123 sizeof(*msg->msg_iov) * msg->msg_iovlen);
3124 write_iovec(ctx, iovec: msg->msg_iov, iovlen: msg->msg_iovlen, maxlen);
3125 if (msg->msg_control && msg->msg_controllen)
3126 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_control, msg->msg_controllen);
3127}
3128#endif
3129
3130#if SANITIZER_INTERCEPT_RECVMSG
3131INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg,
3132 int flags) {
3133 void *ctx;
3134 COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags);
3135 // FIXME: under ASan the call below may write to freed memory and corrupt
3136 // its metadata. See
3137 // https://github.com/google/sanitizers/issues/321.
3138 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recvmsg)(fd, msg, flags);
3139 if (res >= 0) {
3140 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
3141 if (msg) {
3142 write_msghdr(ctx, msg, maxlen: res);
3143 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg);
3144 }
3145 }
3146 return res;
3147}
3148#define INIT_RECVMSG COMMON_INTERCEPT_FUNCTION(recvmsg);
3149#else
3150#define INIT_RECVMSG
3151#endif
3152
3153#if SANITIZER_INTERCEPT_RECVMMSG
3154INTERCEPTOR(int, recvmmsg, int fd, struct __sanitizer_mmsghdr *msgvec,
3155 unsigned int vlen, int flags, void *timeout) {
3156 void *ctx;
3157 COMMON_INTERCEPTOR_ENTER(ctx, recvmmsg, fd, msgvec, vlen, flags, timeout);
3158 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz);
3159 int res =
3160 COMMON_INTERCEPTOR_BLOCK_REAL(recvmmsg)(fd, msgvec, vlen, flags, timeout);
3161 if (res >= 0) {
3162 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
3163 for (int i = 0; i < res; ++i) {
3164 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len,
3165 sizeof(msgvec[i].msg_len));
3166 write_msghdr(ctx, msg: &msgvec[i].msg_hdr, maxlen: msgvec[i].msg_len);
3167 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, &msgvec[i].msg_hdr);
3168 }
3169 }
3170 return res;
3171}
3172#define INIT_RECVMMSG COMMON_INTERCEPT_FUNCTION(recvmmsg);
3173#else
3174#define INIT_RECVMMSG
3175#endif
3176
3177#if SANITIZER_INTERCEPT_SENDMSG || SANITIZER_INTERCEPT_SENDMMSG
3178static void read_msghdr_control(void *ctx, void *control, uptr controllen) {
3179 const unsigned kCmsgDataOffset =
3180 RoundUpTo(size: sizeof(__sanitizer_cmsghdr), boundary: sizeof(uptr));
3181
3182 char *p = (char *)control;
3183 char *const control_end = p + controllen;
3184 while (true) {
3185 if (p + sizeof(__sanitizer_cmsghdr) > control_end) break;
3186 __sanitizer_cmsghdr *cmsg = (__sanitizer_cmsghdr *)p;
3187 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_len, sizeof(cmsg->cmsg_len));
3188
3189 if (p + RoundUpTo(size: cmsg->cmsg_len, boundary: sizeof(uptr)) > control_end) break;
3190
3191 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_level,
3192 sizeof(cmsg->cmsg_level));
3193 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_type,
3194 sizeof(cmsg->cmsg_type));
3195
3196 if (cmsg->cmsg_len > kCmsgDataOffset) {
3197 char *data = p + kCmsgDataOffset;
3198 unsigned data_len = cmsg->cmsg_len - kCmsgDataOffset;
3199 if (data_len > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, data, data_len);
3200 }
3201
3202 p += RoundUpTo(size: cmsg->cmsg_len, boundary: sizeof(uptr));
3203 }
3204}
3205
3206static void read_msghdr(void *ctx, struct __sanitizer_msghdr *msg,
3207 SSIZE_T maxlen) {
3208#define R(f) \
3209 COMMON_INTERCEPTOR_READ_RANGE(ctx, &msg->msg_##f, sizeof(msg->msg_##f))
3210 R(name);
3211 R(namelen);
3212 R(iov);
3213 R(iovlen);
3214 R(control);
3215 R(controllen);
3216 R(flags);
3217#undef R
3218 if (msg->msg_name && msg->msg_namelen)
3219 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_name, msg->msg_namelen);
3220 if (msg->msg_iov && msg->msg_iovlen)
3221 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_iov,
3222 sizeof(*msg->msg_iov) * msg->msg_iovlen);
3223 read_iovec(ctx, iovec: msg->msg_iov, iovlen: msg->msg_iovlen, maxlen);
3224 if (msg->msg_control && msg->msg_controllen)
3225 read_msghdr_control(ctx, control: msg->msg_control, controllen: msg->msg_controllen);
3226}
3227#endif
3228
3229#if SANITIZER_INTERCEPT_SENDMSG
3230INTERCEPTOR(SSIZE_T, sendmsg, int fd, struct __sanitizer_msghdr *msg,
3231 int flags) {
3232 void *ctx;
3233 COMMON_INTERCEPTOR_ENTER(ctx, sendmsg, fd, msg, flags);
3234 if (fd >= 0) {
3235 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
3236 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
3237 }
3238 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(sendmsg)(fd, msg, flags);
3239 if (common_flags()->intercept_send && res >= 0 && msg)
3240 read_msghdr(ctx, msg, maxlen: res);
3241 return res;
3242}
3243#define INIT_SENDMSG COMMON_INTERCEPT_FUNCTION(sendmsg);
3244#else
3245#define INIT_SENDMSG
3246#endif
3247
3248#if SANITIZER_INTERCEPT_SENDMMSG
3249INTERCEPTOR(int, sendmmsg, int fd, struct __sanitizer_mmsghdr *msgvec,
3250 unsigned vlen, int flags) {
3251 void *ctx;
3252 COMMON_INTERCEPTOR_ENTER(ctx, sendmmsg, fd, msgvec, vlen, flags);
3253 if (fd >= 0) {
3254 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
3255 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
3256 }
3257 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sendmmsg)(fd, msgvec, vlen, flags);
3258 if (res >= 0 && msgvec) {
3259 for (int i = 0; i < res; ++i) {
3260 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len,
3261 sizeof(msgvec[i].msg_len));
3262 if (common_flags()->intercept_send)
3263 read_msghdr(ctx, msg: &msgvec[i].msg_hdr, maxlen: msgvec[i].msg_len);
3264 }
3265 }
3266 return res;
3267}
3268#define INIT_SENDMMSG COMMON_INTERCEPT_FUNCTION(sendmmsg);
3269#else
3270#define INIT_SENDMMSG
3271#endif
3272
3273#if SANITIZER_INTERCEPT_SYSMSG
3274INTERCEPTOR(int, msgsnd, int msqid, const void *msgp, SIZE_T msgsz,
3275 int msgflg) {
3276 void *ctx;
3277 COMMON_INTERCEPTOR_ENTER(ctx, msgsnd, msqid, msgp, msgsz, msgflg);
3278 if (msgp)
3279 COMMON_INTERCEPTOR_READ_RANGE(ctx, msgp, sizeof(long) + msgsz);
3280 int res = COMMON_INTERCEPTOR_BLOCK_REAL(msgsnd)(msqid, msgp, msgsz, msgflg);
3281 return res;
3282}
3283
3284INTERCEPTOR(SSIZE_T, msgrcv, int msqid, void *msgp, SIZE_T msgsz,
3285 long msgtyp, int msgflg) {
3286 void *ctx;
3287 COMMON_INTERCEPTOR_ENTER(ctx, msgrcv, msqid, msgp, msgsz, msgtyp, msgflg);
3288 SSIZE_T len =
3289 COMMON_INTERCEPTOR_BLOCK_REAL(msgrcv)(msqid, msgp, msgsz, msgtyp, msgflg);
3290 if (len != -1)
3291 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msgp, sizeof(long) + len);
3292 return len;
3293}
3294
3295#define INIT_SYSMSG \
3296 COMMON_INTERCEPT_FUNCTION(msgsnd); \
3297 COMMON_INTERCEPT_FUNCTION(msgrcv);
3298#else
3299#define INIT_SYSMSG
3300#endif
3301
3302#if SANITIZER_INTERCEPT_GETPEERNAME
3303INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) {
3304 void *ctx;
3305 COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen);
3306 unsigned addr_sz;
3307 if (addrlen) {
3308 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
3309 addr_sz = *addrlen;
3310 }
3311 // FIXME: under ASan the call below may write to freed memory and corrupt
3312 // its metadata. See
3313 // https://github.com/google/sanitizers/issues/321.
3314 int res = REAL(getpeername)(sockfd, addr, addrlen);
3315 if (!res && addr && addrlen) {
3316 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen));
3317 }
3318 return res;
3319}
3320#define INIT_GETPEERNAME COMMON_INTERCEPT_FUNCTION(getpeername);
3321#else
3322#define INIT_GETPEERNAME
3323#endif
3324
3325#if SANITIZER_INTERCEPT_SYSINFO
3326INTERCEPTOR(int, sysinfo, void *info) {
3327 void *ctx;
3328 // FIXME: under ASan the call below may write to freed memory and corrupt
3329 // its metadata. See
3330 // https://github.com/google/sanitizers/issues/321.
3331 COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info);
3332 int res = REAL(sysinfo)(info);
3333 if (!res && info)
3334 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz);
3335 return res;
3336}
3337#define INIT_SYSINFO COMMON_INTERCEPT_FUNCTION(sysinfo);
3338#else
3339#define INIT_SYSINFO
3340#endif
3341
3342#if SANITIZER_INTERCEPT_READDIR
3343INTERCEPTOR(__sanitizer_dirent *, opendir, const char *path) {
3344 void *ctx;
3345 COMMON_INTERCEPTOR_ENTER(ctx, opendir, path);
3346 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
3347 __sanitizer_dirent *res = REAL(opendir)(path);
3348 if (res)
3349 COMMON_INTERCEPTOR_DIR_ACQUIRE(ctx, path);
3350 return res;
3351}
3352
3353INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) {
3354 void *ctx;
3355 COMMON_INTERCEPTOR_ENTER(ctx, readdir, dirp);
3356 // FIXME: under ASan the call below may write to freed memory and corrupt
3357 // its metadata. See
3358 // https://github.com/google/sanitizers/issues/321.
3359 __sanitizer_dirent *res = REAL(readdir)(dirp);
3360 if (res)
3361 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer_dirsiz(res));
3362 return res;
3363}
3364
3365INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry,
3366 __sanitizer_dirent **result) {
3367 void *ctx;
3368 COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result);
3369 // FIXME: under ASan the call below may write to freed memory and corrupt
3370 // its metadata. See
3371 // https://github.com/google/sanitizers/issues/321.
3372 int res = REAL(readdir_r)(dirp, entry, result);
3373 if (!res) {
3374 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3375 if (*result)
3376 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, __sanitizer_dirsiz(*result));
3377 }
3378 return res;
3379}
3380
3381#define INIT_READDIR \
3382 COMMON_INTERCEPT_FUNCTION(opendir); \
3383 COMMON_INTERCEPT_FUNCTION(readdir); \
3384 COMMON_INTERCEPT_FUNCTION(readdir_r);
3385#else
3386#define INIT_READDIR
3387#endif
3388
3389#if SANITIZER_INTERCEPT_READDIR64
3390INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) {
3391 void *ctx;
3392 COMMON_INTERCEPTOR_ENTER(ctx, readdir64, dirp);
3393 // FIXME: under ASan the call below may write to freed memory and corrupt
3394 // its metadata. See
3395 // https://github.com/google/sanitizers/issues/321.
3396 __sanitizer_dirent64 *res = REAL(readdir64)(dirp);
3397 if (res)
3398 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer_dirsiz(res));
3399 return res;
3400}
3401
3402INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry,
3403 __sanitizer_dirent64 **result) {
3404 void *ctx;
3405 COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result);
3406 // FIXME: under ASan the call below may write to freed memory and corrupt
3407 // its metadata. See
3408 // https://github.com/google/sanitizers/issues/321.
3409 int res = REAL(readdir64_r)(dirp, entry, result);
3410 if (!res) {
3411 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3412 if (*result)
3413 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, __sanitizer_dirsiz(*result));
3414 }
3415 return res;
3416}
3417#define INIT_READDIR64 \
3418 COMMON_INTERCEPT_FUNCTION(readdir64); \
3419 COMMON_INTERCEPT_FUNCTION(readdir64_r);
3420#else
3421#define INIT_READDIR64
3422#endif
3423
3424#if SANITIZER_INTERCEPT_PTRACE
3425INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) {
3426 void *ctx;
3427 COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, data);
3428 __sanitizer_iovec local_iovec;
3429
3430 if (data) {
3431 if (request == ptrace_setregs) {
3432 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_regs_struct_sz);
3433 } else if (request == ptrace_setfpregs) {
3434 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpregs_struct_sz);
3435 } else if (request == ptrace_setfpxregs) {
3436 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpxregs_struct_sz);
3437 } else if (request == ptrace_setvfpregs) {
3438 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_vfpregs_struct_sz);
3439 } else if (request == ptrace_setsiginfo) {
3440 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, siginfo_t_sz);
3441
3442 // Some kernel might zero the iovec::iov_base in case of invalid
3443 // write access. In this case copy the invalid address for further
3444 // inspection.
3445 } else if (request == ptrace_setregset || request == ptrace_getregset) {
3446 __sanitizer_iovec *iovec = (__sanitizer_iovec*)data;
3447 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec));
3448 local_iovec = *iovec;
3449 if (request == ptrace_setregset)
3450 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec->iov_base, iovec->iov_len);
3451 }
3452 }
3453
3454 // FIXME: under ASan the call below may write to freed memory and corrupt
3455 // its metadata. See
3456 // https://github.com/google/sanitizers/issues/321.
3457 uptr res = REAL(ptrace)(request, pid, addr, data);
3458
3459 if (!res && data) {
3460 // Note that PEEK* requests assign different meaning to the return value.
3461 // This function does not handle them (nor does it need to).
3462 if (request == ptrace_getregs) {
3463 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_regs_struct_sz);
3464 } else if (request == ptrace_getfpregs) {
3465 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpregs_struct_sz);
3466 } else if (request == ptrace_getfpxregs) {
3467 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpxregs_struct_sz);
3468 } else if (request == ptrace_getvfpregs) {
3469 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_vfpregs_struct_sz);
3470 } else if (request == ptrace_getsiginfo) {
3471 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, siginfo_t_sz);
3472 } else if (request == ptrace_geteventmsg) {
3473 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(unsigned long));
3474 } else if (request == ptrace_getregset) {
3475 __sanitizer_iovec *iovec = (__sanitizer_iovec*)data;
3476 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec, sizeof(*iovec));
3477 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, local_iovec.iov_base,
3478 local_iovec.iov_len);
3479 }
3480 }
3481 return res;
3482}
3483
3484#define INIT_PTRACE COMMON_INTERCEPT_FUNCTION(ptrace);
3485#else
3486#define INIT_PTRACE
3487#endif
3488
3489#if SANITIZER_INTERCEPT_SETLOCALE
3490static void unpoison_ctype_arrays(void *ctx) {
3491#if SANITIZER_NETBSD
3492 // These arrays contain 256 regular elements in unsigned char range + 1 EOF
3493 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _ctype_tab_, 257 * sizeof(short));
3494 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _toupper_tab_, 257 * sizeof(short));
3495 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _tolower_tab_, 257 * sizeof(short));
3496#endif
3497}
3498
3499INTERCEPTOR(char *, setlocale, int category, char *locale) {
3500 void *ctx;
3501 COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, locale);
3502 if (locale)
3503 COMMON_INTERCEPTOR_READ_RANGE(ctx, locale, internal_strlen(locale) + 1);
3504 char *res = REAL(setlocale)(category, locale);
3505 if (res) {
3506 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
3507 unpoison_ctype_arrays(ctx);
3508 }
3509 return res;
3510}
3511
3512#define INIT_SETLOCALE COMMON_INTERCEPT_FUNCTION(setlocale);
3513#else
3514#define INIT_SETLOCALE
3515#endif
3516
3517#if SANITIZER_INTERCEPT_GETCWD
3518INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) {
3519 void *ctx;
3520 COMMON_INTERCEPTOR_ENTER(ctx, getcwd, buf, size);
3521 // FIXME: under ASan the call below may write to freed memory and corrupt
3522 // its metadata. See
3523 // https://github.com/google/sanitizers/issues/321.
3524 char *res = REAL(getcwd)(buf, size);
3525 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
3526 return res;
3527}
3528#define INIT_GETCWD COMMON_INTERCEPT_FUNCTION(getcwd);
3529#else
3530#define INIT_GETCWD
3531#endif
3532
3533#if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME
3534INTERCEPTOR(char *, get_current_dir_name, int fake) {
3535 void *ctx;
3536 COMMON_INTERCEPTOR_ENTER(ctx, get_current_dir_name, fake);
3537 // FIXME: under ASan the call below may write to freed memory and corrupt
3538 // its metadata. See
3539 // https://github.com/google/sanitizers/issues/321.
3540 char *res = REAL(get_current_dir_name)(fake);
3541 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
3542 return res;
3543}
3544
3545#define INIT_GET_CURRENT_DIR_NAME \
3546 COMMON_INTERCEPT_FUNCTION(get_current_dir_name);
3547#else
3548#define INIT_GET_CURRENT_DIR_NAME
3549#endif
3550
3551UNUSED static inline void FixRealStrtolEndptr(const char *nptr, char **endptr) {
3552 CHECK(endptr);
3553 if (nptr == *endptr) {
3554 // No digits were found at strtol call, we need to find out the last
3555 // symbol accessed by strtoll on our own.
3556 // We get this symbol by skipping leading blanks and optional +/- sign.
3557 while (IsSpace(c: *nptr)) nptr++;
3558 if (*nptr == '+' || *nptr == '-') nptr++;
3559 *endptr = const_cast<char *>(nptr);
3560 }
3561 CHECK(*endptr >= nptr);
3562}
3563
3564UNUSED static inline void StrtolFixAndCheck(void *ctx, const char *nptr,
3565 char **endptr, char *real_endptr, int base) {
3566 if (endptr) {
3567 *endptr = real_endptr;
3568 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr));
3569 }
3570 // If base has unsupported value, strtol can exit with EINVAL
3571 // without reading any characters. So do additional checks only
3572 // if base is valid.
3573 bool is_valid_base = (base == 0) || (2 <= base && base <= 36);
3574 if (is_valid_base) {
3575 FixRealStrtolEndptr(nptr, endptr: &real_endptr);
3576 }
3577 COMMON_INTERCEPTOR_READ_STRING(ctx, nptr, is_valid_base ?
3578 (real_endptr - nptr) + 1 : 0);
3579}
3580
3581#if SANITIZER_INTERCEPT_STRTOIMAX
3582template <typename Fn>
3583static ALWAYS_INLINE auto StrtoimaxImpl(void *ctx, Fn real, const char *nptr,
3584 char **endptr, int base)
3585 -> decltype(real(nullptr, nullptr, 0)) {
3586 char *real_endptr;
3587 auto res = real(nptr, &real_endptr, base);
3588 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
3589 return res;
3590}
3591
3592INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) {
3593 void *ctx;
3594 COMMON_INTERCEPTOR_ENTER(ctx, strtoimax, nptr, endptr, base);
3595 return StrtoimaxImpl(ctx, REAL(strtoimax), nptr, endptr, base);
3596}
3597INTERCEPTOR(UINTMAX_T, strtoumax, const char *nptr, char **endptr, int base) {
3598 void *ctx;
3599 COMMON_INTERCEPTOR_ENTER(ctx, strtoumax, nptr, endptr, base);
3600 return StrtoimaxImpl(ctx, REAL(strtoumax), nptr, endptr, base);
3601}
3602
3603#define INIT_STRTOIMAX \
3604 COMMON_INTERCEPT_FUNCTION(strtoimax); \
3605 COMMON_INTERCEPT_FUNCTION(strtoumax);
3606#else
3607#define INIT_STRTOIMAX
3608#endif
3609
3610#if SANITIZER_INTERCEPT_STRTOIMAX && SANITIZER_GLIBC
3611INTERCEPTOR(INTMAX_T, __isoc23_strtoimax, const char *nptr, char **endptr, int base) {
3612 void *ctx;
3613 COMMON_INTERCEPTOR_ENTER(ctx, __isoc23_strtoimax, nptr, endptr, base);
3614 return StrtoimaxImpl(ctx, REAL(__isoc23_strtoimax), nptr, endptr, base);
3615}
3616INTERCEPTOR(UINTMAX_T, __isoc23_strtoumax, const char *nptr, char **endptr, int base) {
3617 void *ctx;
3618 COMMON_INTERCEPTOR_ENTER(ctx, __isoc23_strtoumax, nptr, endptr, base);
3619 return StrtoimaxImpl(ctx, REAL(__isoc23_strtoumax), nptr, endptr, base);
3620}
3621
3622# define INIT_STRTOIMAX_C23 \
3623 COMMON_INTERCEPT_FUNCTION(__isoc23_strtoimax); \
3624 COMMON_INTERCEPT_FUNCTION(__isoc23_strtoumax);
3625#else
3626# define INIT_STRTOIMAX_C23
3627#endif
3628
3629#if SANITIZER_INTERCEPT_MBSTOWCS
3630INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) {
3631 void *ctx;
3632 COMMON_INTERCEPTOR_ENTER(ctx, mbstowcs, dest, src, len);
3633 // FIXME: under ASan the call below may write to freed memory and corrupt
3634 // its metadata. See
3635 // https://github.com/google/sanitizers/issues/321.
3636 SIZE_T res = REAL(mbstowcs)(dest, src, len);
3637 if (res != (SIZE_T) - 1 && dest) {
3638 SIZE_T write_cnt = res + (res < len);
3639 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
3640 }
3641 return res;
3642}
3643
3644INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len,
3645 void *ps) {
3646 void *ctx;
3647 COMMON_INTERCEPTOR_ENTER(ctx, mbsrtowcs, dest, src, len, ps);
3648 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3649 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3650 // FIXME: under ASan the call below may write to freed memory and corrupt
3651 // its metadata. See
3652 // https://github.com/google/sanitizers/issues/321.
3653 SIZE_T res = REAL(mbsrtowcs)(dest, src, len, ps);
3654 if (res != (SIZE_T)(-1) && dest && src) {
3655 // This function, and several others, may or may not write the terminating
3656 // \0 character. They write it iff they clear *src.
3657 SIZE_T write_cnt = res + !*src;
3658 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
3659 }
3660 return res;
3661}
3662
3663#define INIT_MBSTOWCS \
3664 COMMON_INTERCEPT_FUNCTION(mbstowcs); \
3665 COMMON_INTERCEPT_FUNCTION(mbsrtowcs);
3666#else
3667#define INIT_MBSTOWCS
3668#endif
3669
3670#if SANITIZER_INTERCEPT_MBSNRTOWCS
3671INTERCEPTOR(SIZE_T, mbsnrtowcs, wchar_t *dest, const char **src, SIZE_T nms,
3672 SIZE_T len, void *ps) {
3673 void *ctx;
3674 COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps);
3675 if (src) {
3676 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3677 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
3678 }
3679 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3680 // FIXME: under ASan the call below may write to freed memory and corrupt
3681 // its metadata. See
3682 // https://github.com/google/sanitizers/issues/321.
3683 SIZE_T res = REAL(mbsnrtowcs)(dest, src, nms, len, ps);
3684 if (res != (SIZE_T)(-1) && dest && src) {
3685 SIZE_T write_cnt = res + !*src;
3686 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
3687 }
3688 return res;
3689}
3690
3691#define INIT_MBSNRTOWCS COMMON_INTERCEPT_FUNCTION(mbsnrtowcs);
3692#else
3693#define INIT_MBSNRTOWCS
3694#endif
3695
3696#if SANITIZER_INTERCEPT_WCSTOMBS
3697INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) {
3698 void *ctx;
3699 COMMON_INTERCEPTOR_ENTER(ctx, wcstombs, dest, src, len);
3700 // FIXME: under ASan the call below may write to freed memory and corrupt
3701 // its metadata. See
3702 // https://github.com/google/sanitizers/issues/321.
3703 SIZE_T res = REAL(wcstombs)(dest, src, len);
3704 if (res != (SIZE_T) - 1 && dest) {
3705 SIZE_T write_cnt = res + (res < len);
3706 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
3707 }
3708 return res;
3709}
3710
3711INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len,
3712 void *ps) {
3713 void *ctx;
3714 COMMON_INTERCEPTOR_ENTER(ctx, wcsrtombs, dest, src, len, ps);
3715 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3716 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3717 // FIXME: under ASan the call below may write to freed memory and corrupt
3718 // its metadata. See
3719 // https://github.com/google/sanitizers/issues/321.
3720 SIZE_T res = REAL(wcsrtombs)(dest, src, len, ps);
3721 if (res != (SIZE_T) - 1 && dest && src) {
3722 SIZE_T write_cnt = res + !*src;
3723 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
3724 }
3725 return res;
3726}
3727
3728#define INIT_WCSTOMBS \
3729 COMMON_INTERCEPT_FUNCTION(wcstombs); \
3730 COMMON_INTERCEPT_FUNCTION(wcsrtombs);
3731#else
3732#define INIT_WCSTOMBS
3733#endif
3734
3735#if SANITIZER_INTERCEPT_WCSNRTOMBS
3736INTERCEPTOR(SIZE_T, wcsnrtombs, char *dest, const wchar_t **src, SIZE_T nms,
3737 SIZE_T len, void *ps) {
3738 void *ctx;
3739 COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps);
3740 if (src) {
3741 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
3742 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
3743 }
3744 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3745 // FIXME: under ASan the call below may write to freed memory and corrupt
3746 // its metadata. See
3747 // https://github.com/google/sanitizers/issues/321.
3748 SIZE_T res = REAL(wcsnrtombs)(dest, src, nms, len, ps);
3749 if (res != ((SIZE_T)-1) && dest && src) {
3750 SIZE_T write_cnt = res + !*src;
3751 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
3752 }
3753 return res;
3754}
3755
3756#define INIT_WCSNRTOMBS COMMON_INTERCEPT_FUNCTION(wcsnrtombs);
3757#else
3758#define INIT_WCSNRTOMBS
3759#endif
3760
3761
3762#if SANITIZER_INTERCEPT_WCRTOMB
3763INTERCEPTOR(SIZE_T, wcrtomb, char *dest, wchar_t src, void *ps) {
3764 void *ctx;
3765 COMMON_INTERCEPTOR_ENTER(ctx, wcrtomb, dest, src, ps);
3766 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
3767
3768 if (!dest)
3769 return REAL(wcrtomb)(dest, src, ps);
3770
3771 char local_dest[32];
3772 SIZE_T res = REAL(wcrtomb)(local_dest, src, ps);
3773 if (res != ((SIZE_T)-1)) {
3774 CHECK_LE(res, sizeof(local_dest));
3775 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res);
3776 REAL(memcpy)(dest, local_dest, res);
3777 }
3778 return res;
3779}
3780
3781#define INIT_WCRTOMB COMMON_INTERCEPT_FUNCTION(wcrtomb);
3782#else
3783#define INIT_WCRTOMB
3784#endif
3785
3786#if SANITIZER_INTERCEPT_WCTOMB
3787INTERCEPTOR(int, wctomb, char *dest, wchar_t src) {
3788 void *ctx;
3789 COMMON_INTERCEPTOR_ENTER(ctx, wctomb, dest, src);
3790 if (!dest)
3791 return REAL(wctomb)(dest, src);
3792
3793 char local_dest[32];
3794 int res = REAL(wctomb)(local_dest, src);
3795 if (res != -1) {
3796 CHECK_LE(res, sizeof(local_dest));
3797 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res);
3798 REAL(memcpy)(dest, local_dest, res);
3799 }
3800 return res;
3801}
3802
3803#define INIT_WCTOMB COMMON_INTERCEPT_FUNCTION(wctomb);
3804#else
3805#define INIT_WCTOMB
3806#endif
3807
3808#if SANITIZER_INTERCEPT_TCGETATTR
3809INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) {
3810 void *ctx;
3811 COMMON_INTERCEPTOR_ENTER(ctx, tcgetattr, fd, termios_p);
3812 // FIXME: under ASan the call below may write to freed memory and corrupt
3813 // its metadata. See
3814 // https://github.com/google/sanitizers/issues/321.
3815 int res = REAL(tcgetattr)(fd, termios_p);
3816 if (!res && termios_p)
3817 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, termios_p, struct_termios_sz);
3818 return res;
3819}
3820
3821#define INIT_TCGETATTR COMMON_INTERCEPT_FUNCTION(tcgetattr);
3822#else
3823#define INIT_TCGETATTR
3824#endif
3825
3826#if SANITIZER_INTERCEPT_REALPATH
3827INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) {
3828 void *ctx;
3829 COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path);
3830 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
3831
3832 // Workaround a bug in glibc where dlsym(RTLD_NEXT, ...) returns the oldest
3833 // version of a versioned symbol. For realpath(), this gives us something
3834 // (called __old_realpath) that does not handle NULL in the second argument.
3835 // Handle it as part of the interceptor.
3836 char *allocated_path = nullptr;
3837 if (!resolved_path)
3838 allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1);
3839
3840 char *res = REAL(realpath)(path, resolved_path);
3841 if (allocated_path && !res)
3842 WRAP(free)(allocated_path);
3843 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
3844 return res;
3845}
3846# define INIT_REALPATH COMMON_INTERCEPT_FUNCTION(realpath);
3847#else
3848#define INIT_REALPATH
3849#endif
3850
3851#if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME
3852INTERCEPTOR(char *, canonicalize_file_name, const char *path) {
3853 void *ctx;
3854 COMMON_INTERCEPTOR_ENTER(ctx, canonicalize_file_name, path);
3855 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
3856 char *res = REAL(canonicalize_file_name)(path);
3857 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
3858 return res;
3859}
3860#define INIT_CANONICALIZE_FILE_NAME \
3861 COMMON_INTERCEPT_FUNCTION(canonicalize_file_name);
3862#else
3863#define INIT_CANONICALIZE_FILE_NAME
3864#endif
3865
3866#if SANITIZER_INTERCEPT_CONFSTR
3867INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) {
3868 void *ctx;
3869 COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, len);
3870 // FIXME: under ASan the call below may write to freed memory and corrupt
3871 // its metadata. See
3872 // https://github.com/google/sanitizers/issues/321.
3873 SIZE_T res = REAL(confstr)(name, buf, len);
3874 if (buf && res)
3875 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len);
3876 return res;
3877}
3878#define INIT_CONFSTR COMMON_INTERCEPT_FUNCTION(confstr);
3879#else
3880#define INIT_CONFSTR
3881#endif
3882
3883#if SANITIZER_INTERCEPT_SCHED_GETAFFINITY
3884INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) {
3885 void *ctx;
3886 COMMON_INTERCEPTOR_ENTER(ctx, sched_getaffinity, pid, cpusetsize, mask);
3887 // FIXME: under ASan the call below may write to freed memory and corrupt
3888 // its metadata. See
3889 // https://github.com/google/sanitizers/issues/321.
3890 int res = REAL(sched_getaffinity)(pid, cpusetsize, mask);
3891 if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize);
3892 return res;
3893}
3894#define INIT_SCHED_GETAFFINITY COMMON_INTERCEPT_FUNCTION(sched_getaffinity);
3895#else
3896#define INIT_SCHED_GETAFFINITY
3897#endif
3898
3899#if SANITIZER_INTERCEPT_SCHED_GETPARAM
3900INTERCEPTOR(int, sched_getparam, int pid, void *param) {
3901 void *ctx;
3902 COMMON_INTERCEPTOR_ENTER(ctx, sched_getparam, pid, param);
3903 int res = REAL(sched_getparam)(pid, param);
3904 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, struct_sched_param_sz);
3905 return res;
3906}
3907#define INIT_SCHED_GETPARAM COMMON_INTERCEPT_FUNCTION(sched_getparam);
3908#else
3909#define INIT_SCHED_GETPARAM
3910#endif
3911
3912#if SANITIZER_INTERCEPT_STRERROR
3913INTERCEPTOR(char *, strerror, int errnum) {
3914 void *ctx;
3915 COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum);
3916 COMMON_INTERCEPTOR_STRERROR();
3917 char *res = REAL(strerror)(errnum);
3918 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
3919 return res;
3920}
3921#define INIT_STRERROR COMMON_INTERCEPT_FUNCTION(strerror);
3922#else
3923#define INIT_STRERROR
3924#endif
3925
3926#if SANITIZER_INTERCEPT_STRERROR_R
3927// There are 2 versions of strerror_r:
3928// * POSIX version returns 0 on success, negative error code on failure,
3929// writes message to buf.
3930// * GNU version returns message pointer, which points to either buf or some
3931// static storage.
3932#if ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE) || \
3933 SANITIZER_APPLE || SANITIZER_ANDROID || SANITIZER_NETBSD || \
3934 SANITIZER_FREEBSD
3935// POSIX version. Spec is not clear on whether buf is NULL-terminated.
3936// At least on OSX, buf contents are valid even when the call fails.
3937INTERCEPTOR(int, strerror_r, int errnum, char *buf, SIZE_T buflen) {
3938 void *ctx;
3939 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen);
3940 // FIXME: under ASan the call below may write to freed memory and corrupt
3941 // its metadata. See
3942 // https://github.com/google/sanitizers/issues/321.
3943 int res = REAL(strerror_r)(errnum, buf, buflen);
3944
3945 SIZE_T sz = internal_strnlen(buf, buflen);
3946 if (sz < buflen) ++sz;
3947 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz);
3948 return res;
3949}
3950#else
3951// GNU version.
3952INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) {
3953 void *ctx;
3954 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen);
3955 // FIXME: under ASan the call below may write to freed memory and corrupt
3956 // its metadata. See
3957 // https://github.com/google/sanitizers/issues/321.
3958 char *res = REAL(strerror_r)(errnum, buf, buflen);
3959 if (res == buf)
3960 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
3961 else
3962 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
3963 return res;
3964}
3965#endif //(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE ||
3966 //SANITIZER_APPLE
3967#define INIT_STRERROR_R COMMON_INTERCEPT_FUNCTION(strerror_r);
3968#else
3969#define INIT_STRERROR_R
3970#endif
3971
3972#if SANITIZER_INTERCEPT_XPG_STRERROR_R
3973INTERCEPTOR(int, __xpg_strerror_r, int errnum, char *buf, SIZE_T buflen) {
3974 void *ctx;
3975 COMMON_INTERCEPTOR_ENTER(ctx, __xpg_strerror_r, errnum, buf, buflen);
3976 // FIXME: under ASan the call below may write to freed memory and corrupt
3977 // its metadata. See
3978 // https://github.com/google/sanitizers/issues/321.
3979 int res = REAL(__xpg_strerror_r)(errnum, buf, buflen);
3980 // This version always returns a null-terminated string.
3981 if (buf && buflen)
3982 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1);
3983 return res;
3984}
3985#define INIT_XPG_STRERROR_R COMMON_INTERCEPT_FUNCTION(__xpg_strerror_r);
3986#else
3987#define INIT_XPG_STRERROR_R
3988#endif
3989
3990#if SANITIZER_INTERCEPT_SCANDIR
3991typedef int (*scandir_filter_f)(const struct __sanitizer_dirent *);
3992typedef int (*scandir_compar_f)(const struct __sanitizer_dirent **,
3993 const struct __sanitizer_dirent **);
3994
3995static THREADLOCAL scandir_filter_f scandir_filter;
3996static THREADLOCAL scandir_compar_f scandir_compar;
3997
3998static int wrapped_scandir_filter(const struct __sanitizer_dirent *dir) {
3999 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
4000 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, __sanitizer_dirsiz(dir));
4001 return scandir_filter(dir);
4002}
4003
4004static int wrapped_scandir_compar(const struct __sanitizer_dirent **a,
4005 const struct __sanitizer_dirent **b) {
4006 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
4007 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a));
4008 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, __sanitizer_dirsiz(*a));
4009 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b));
4010 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, __sanitizer_dirsiz(*b));
4011 return scandir_compar(a, b);
4012}
4013
4014INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist,
4015 scandir_filter_f filter, scandir_compar_f compar) {
4016 void *ctx;
4017 COMMON_INTERCEPTOR_ENTER(ctx, scandir, dirp, namelist, filter, compar);
4018 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1);
4019 scandir_filter = filter;
4020 scandir_compar = compar;
4021 // FIXME: under ASan the call below may write to freed memory and corrupt
4022 // its metadata. See
4023 // https://github.com/google/sanitizers/issues/321.
4024 int res = REAL(scandir)(dirp, namelist,
4025 filter ? wrapped_scandir_filter : nullptr,
4026 compar ? wrapped_scandir_compar : nullptr);
4027 scandir_filter = nullptr;
4028 scandir_compar = nullptr;
4029 if (namelist && res > 0) {
4030 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
4031 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
4032 for (int i = 0; i < res; ++i)
4033 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
4034 __sanitizer_dirsiz((*namelist)[i]));
4035 }
4036 return res;
4037}
4038#define INIT_SCANDIR COMMON_INTERCEPT_FUNCTION(scandir);
4039#else
4040#define INIT_SCANDIR
4041#endif
4042
4043#if SANITIZER_INTERCEPT_SCANDIR64
4044typedef int (*scandir64_filter_f)(const struct __sanitizer_dirent64 *);
4045typedef int (*scandir64_compar_f)(const struct __sanitizer_dirent64 **,
4046 const struct __sanitizer_dirent64 **);
4047
4048static THREADLOCAL scandir64_filter_f scandir64_filter;
4049static THREADLOCAL scandir64_compar_f scandir64_compar;
4050
4051static int wrapped_scandir64_filter(const struct __sanitizer_dirent64 *dir) {
4052 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
4053 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, __sanitizer_dirsiz(dir));
4054 return scandir64_filter(dir);
4055}
4056
4057static int wrapped_scandir64_compar(const struct __sanitizer_dirent64 **a,
4058 const struct __sanitizer_dirent64 **b) {
4059 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
4060 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a));
4061 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, __sanitizer_dirsiz(*a));
4062 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b));
4063 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, __sanitizer_dirsiz(*b));
4064 return scandir64_compar(a, b);
4065}
4066
4067INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist,
4068 scandir64_filter_f filter, scandir64_compar_f compar) {
4069 void *ctx;
4070 COMMON_INTERCEPTOR_ENTER(ctx, scandir64, dirp, namelist, filter, compar);
4071 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1);
4072 scandir64_filter = filter;
4073 scandir64_compar = compar;
4074 // FIXME: under ASan the call below may write to freed memory and corrupt
4075 // its metadata. See
4076 // https://github.com/google/sanitizers/issues/321.
4077 int res =
4078 REAL(scandir64)(dirp, namelist,
4079 filter ? wrapped_scandir64_filter : nullptr,
4080 compar ? wrapped_scandir64_compar : nullptr);
4081 scandir64_filter = nullptr;
4082 scandir64_compar = nullptr;
4083 if (namelist && res > 0) {
4084 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
4085 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
4086 for (int i = 0; i < res; ++i)
4087 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
4088 __sanitizer_dirsiz((*namelist)[i]));
4089 }
4090 return res;
4091}
4092#define INIT_SCANDIR64 COMMON_INTERCEPT_FUNCTION(scandir64);
4093#else
4094#define INIT_SCANDIR64
4095#endif
4096
4097#if SANITIZER_INTERCEPT_GETGROUPS
4098INTERCEPTOR(int, getgroups, int size, u32 *lst) {
4099 void *ctx;
4100 COMMON_INTERCEPTOR_ENTER(ctx, getgroups, size, lst);
4101 // FIXME: under ASan the call below may write to freed memory and corrupt
4102 // its metadata. See
4103 // https://github.com/google/sanitizers/issues/321.
4104 int res = REAL(getgroups)(size, lst);
4105 if (res >= 0 && lst && size > 0)
4106 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lst, res * sizeof(*lst));
4107 return res;
4108}
4109#define INIT_GETGROUPS COMMON_INTERCEPT_FUNCTION(getgroups);
4110#else
4111#define INIT_GETGROUPS
4112#endif
4113
4114#if SANITIZER_INTERCEPT_POLL
4115static void read_pollfd(void *ctx, __sanitizer_pollfd *fds,
4116 __sanitizer_nfds_t nfds) {
4117 for (unsigned i = 0; i < nfds; ++i) {
4118 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].fd, sizeof(fds[i].fd));
4119 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].events, sizeof(fds[i].events));
4120 }
4121}
4122
4123static void write_pollfd(void *ctx, __sanitizer_pollfd *fds,
4124 __sanitizer_nfds_t nfds) {
4125 for (unsigned i = 0; i < nfds; ++i)
4126 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &fds[i].revents,
4127 sizeof(fds[i].revents));
4128}
4129
4130INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
4131 int timeout) {
4132 void *ctx;
4133 COMMON_INTERCEPTOR_ENTER(ctx, poll, fds, nfds, timeout);
4134 if (fds && nfds) read_pollfd(ctx, fds, nfds);
4135 int res = COMMON_INTERCEPTOR_BLOCK_REAL(poll)(fds, nfds, timeout);
4136 if (fds && nfds) write_pollfd(ctx, fds, nfds);
4137 return res;
4138}
4139#define INIT_POLL COMMON_INTERCEPT_FUNCTION(poll);
4140#else
4141#define INIT_POLL
4142#endif
4143
4144#if SANITIZER_INTERCEPT_PPOLL
4145INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
4146 void *timeout_ts, __sanitizer_sigset_t *sigmask) {
4147 void *ctx;
4148 COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask);
4149 if (fds && nfds) read_pollfd(ctx, fds, nfds);
4150 if (timeout_ts)
4151 COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz);
4152 if (sigmask) COMMON_INTERCEPTOR_READ_RANGE(ctx, sigmask, sizeof(*sigmask));
4153 int res =
4154 COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask);
4155 if (fds && nfds) write_pollfd(ctx, fds, nfds);
4156 return res;
4157}
4158#define INIT_PPOLL COMMON_INTERCEPT_FUNCTION(ppoll);
4159#else
4160#define INIT_PPOLL
4161#endif
4162
4163#if SANITIZER_INTERCEPT_WORDEXP
4164INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) {
4165 void *ctx;
4166 COMMON_INTERCEPTOR_ENTER(ctx, wordexp, s, p, flags);
4167 if (s) COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1);
4168 // FIXME: under ASan the call below may write to freed memory and corrupt
4169 // its metadata. See
4170 // https://github.com/google/sanitizers/issues/321.
4171 int res = REAL(wordexp)(s, p, flags);
4172 if (!res && p) {
4173 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
4174 uptr we_wordc =
4175 ((flags & wordexp_wrde_dooffs) ? p->we_offs : 0) + p->we_wordc;
4176 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->we_wordv,
4177 sizeof(*p->we_wordv) * (we_wordc + 1));
4178 for (uptr i = 0; i < we_wordc; ++i) {
4179 char *w = p->we_wordv[i];
4180 if (w) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, w, internal_strlen(w) + 1);
4181 }
4182 }
4183 return res;
4184}
4185#define INIT_WORDEXP COMMON_INTERCEPT_FUNCTION(wordexp);
4186#else
4187#define INIT_WORDEXP
4188#endif
4189
4190#if SANITIZER_INTERCEPT_SIGWAIT
4191INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) {
4192 void *ctx;
4193 COMMON_INTERCEPTOR_ENTER(ctx, sigwait, set, sig);
4194 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4195 // FIXME: under ASan the call below may write to freed memory and corrupt
4196 // its metadata. See
4197 // https://github.com/google/sanitizers/issues/321.
4198 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwait)(set, sig);
4199 if (!res && sig) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sig, sizeof(*sig));
4200 return res;
4201}
4202#define INIT_SIGWAIT COMMON_INTERCEPT_FUNCTION(sigwait);
4203#else
4204#define INIT_SIGWAIT
4205#endif
4206
4207#if SANITIZER_INTERCEPT_SIGWAITINFO
4208INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) {
4209 void *ctx;
4210 COMMON_INTERCEPTOR_ENTER(ctx, sigwaitinfo, set, info);
4211 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4212 // FIXME: under ASan the call below may write to freed memory and corrupt
4213 // its metadata. See
4214 // https://github.com/google/sanitizers/issues/321.
4215 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwaitinfo)(set, info);
4216 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
4217 return res;
4218}
4219#define INIT_SIGWAITINFO COMMON_INTERCEPT_FUNCTION(sigwaitinfo);
4220#else
4221#define INIT_SIGWAITINFO
4222#endif
4223
4224#if SANITIZER_INTERCEPT_SIGTIMEDWAIT
4225INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info,
4226 void *timeout) {
4227 void *ctx;
4228 COMMON_INTERCEPTOR_ENTER(ctx, sigtimedwait, set, info, timeout);
4229 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz);
4230 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4231 // FIXME: under ASan the call below may write to freed memory and corrupt
4232 // its metadata. See
4233 // https://github.com/google/sanitizers/issues/321.
4234 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigtimedwait)(set, info, timeout);
4235 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
4236 return res;
4237}
4238#define INIT_SIGTIMEDWAIT COMMON_INTERCEPT_FUNCTION(sigtimedwait);
4239#else
4240#define INIT_SIGTIMEDWAIT
4241#endif
4242
4243#if SANITIZER_INTERCEPT_SIGSETOPS
4244INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) {
4245 void *ctx;
4246 COMMON_INTERCEPTOR_ENTER(ctx, sigemptyset, set);
4247 // FIXME: under ASan the call below may write to freed memory and corrupt
4248 // its metadata. See
4249 // https://github.com/google/sanitizers/issues/321.
4250 int res = REAL(sigemptyset)(set);
4251 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
4252 return res;
4253}
4254
4255INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) {
4256 void *ctx;
4257 COMMON_INTERCEPTOR_ENTER(ctx, sigfillset, set);
4258 // FIXME: under ASan the call below may write to freed memory and corrupt
4259 // its metadata. See
4260 // https://github.com/google/sanitizers/issues/321.
4261 int res = REAL(sigfillset)(set);
4262 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
4263 return res;
4264}
4265#define INIT_SIGSETOPS \
4266 COMMON_INTERCEPT_FUNCTION(sigemptyset); \
4267 COMMON_INTERCEPT_FUNCTION(sigfillset);
4268#else
4269#define INIT_SIGSETOPS
4270#endif
4271
4272#if SANITIZER_INTERCEPT_SIGSET_LOGICOPS
4273INTERCEPTOR(int, sigandset, __sanitizer_sigset_t *dst,
4274 __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) {
4275 void *ctx;
4276 COMMON_INTERCEPTOR_ENTER(ctx, sigandset, dst, src1, src2);
4277 if (src1)
4278 COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1));
4279 if (src2)
4280 COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2));
4281 int res = REAL(sigandset)(dst, src1, src2);
4282 if (!res && dst)
4283 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
4284 return res;
4285}
4286
4287INTERCEPTOR(int, sigorset, __sanitizer_sigset_t *dst,
4288 __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) {
4289 void *ctx;
4290 COMMON_INTERCEPTOR_ENTER(ctx, sigorset, dst, src1, src2);
4291 if (src1)
4292 COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1));
4293 if (src2)
4294 COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2));
4295 int res = REAL(sigorset)(dst, src1, src2);
4296 if (!res && dst)
4297 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
4298 return res;
4299}
4300#define INIT_SIGSET_LOGICOPS \
4301 COMMON_INTERCEPT_FUNCTION(sigandset); \
4302 COMMON_INTERCEPT_FUNCTION(sigorset);
4303#else
4304#define INIT_SIGSET_LOGICOPS
4305#endif
4306
4307#if SANITIZER_INTERCEPT_SIGPENDING
4308INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) {
4309 void *ctx;
4310 COMMON_INTERCEPTOR_ENTER(ctx, sigpending, set);
4311 // FIXME: under ASan the call below may write to freed memory and corrupt
4312 // its metadata. See
4313 // https://github.com/google/sanitizers/issues/321.
4314 int res = REAL(sigpending)(set);
4315 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
4316 return res;
4317}
4318#define INIT_SIGPENDING COMMON_INTERCEPT_FUNCTION(sigpending);
4319#else
4320#define INIT_SIGPENDING
4321#endif
4322
4323#if SANITIZER_INTERCEPT_SIGPROCMASK
4324INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set,
4325 __sanitizer_sigset_t *oldset) {
4326 void *ctx;
4327 COMMON_INTERCEPTOR_ENTER(ctx, sigprocmask, how, set, oldset);
4328 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4329 // FIXME: under ASan the call below may write to freed memory and corrupt
4330 // its metadata. See
4331 // https://github.com/google/sanitizers/issues/321.
4332 int res = REAL(sigprocmask)(how, set, oldset);
4333 if (!res && oldset)
4334 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset));
4335 return res;
4336}
4337#define INIT_SIGPROCMASK COMMON_INTERCEPT_FUNCTION(sigprocmask);
4338#else
4339#define INIT_SIGPROCMASK
4340#endif
4341
4342#if SANITIZER_INTERCEPT_PTHREAD_SIGMASK
4343INTERCEPTOR(int, pthread_sigmask, int how, __sanitizer_sigset_t *set,
4344 __sanitizer_sigset_t *oldset) {
4345 void *ctx;
4346 COMMON_INTERCEPTOR_ENTER(ctx, pthread_sigmask, how, set, oldset);
4347 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set));
4348 // FIXME: under ASan the call below may write to freed memory and corrupt
4349 // its metadata. See
4350 // https://github.com/google/sanitizers/issues/321.
4351 int res = REAL(pthread_sigmask)(how, set, oldset);
4352 if (!res && oldset)
4353 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset));
4354 return res;
4355}
4356#define INIT_PTHREAD_SIGMASK COMMON_INTERCEPT_FUNCTION(pthread_sigmask);
4357#else
4358#define INIT_PTHREAD_SIGMASK
4359#endif
4360
4361#if SANITIZER_INTERCEPT_BACKTRACE
4362INTERCEPTOR(int, backtrace, void **buffer, int size) {
4363 void *ctx;
4364 COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size);
4365 // 'buffer' might be freed memory, hence it is unsafe to directly call
4366 // REAL(backtrace)(buffer, size). Instead, we use our own known-good
4367 // scratch buffer.
4368 void **scratch = (void**)InternalAlloc(size: sizeof(void*) * size);
4369 int res = REAL(backtrace)(scratch, size);
4370 if (res && buffer) {
4371 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer));
4372 internal_memcpy(dest: buffer, src: scratch, n: res * sizeof(*buffer));
4373 }
4374 InternalFree(p: scratch);
4375 return res;
4376}
4377
4378INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) {
4379 void *ctx;
4380 COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size);
4381 if (buffer && size)
4382 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer));
4383 // The COMMON_INTERCEPTOR_READ_RANGE above ensures that 'buffer' is
4384 // valid for reading.
4385 char **res = REAL(backtrace_symbols)(buffer, size);
4386 if (res && size) {
4387 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, size * sizeof(*res));
4388 for (int i = 0; i < size; ++i)
4389 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res[i], internal_strlen(res[i]) + 1);
4390 }
4391 return res;
4392}
4393#define INIT_BACKTRACE \
4394 COMMON_INTERCEPT_FUNCTION(backtrace); \
4395 COMMON_INTERCEPT_FUNCTION(backtrace_symbols);
4396#else
4397#define INIT_BACKTRACE
4398#endif
4399
4400#if SANITIZER_INTERCEPT__EXIT
4401INTERCEPTOR(void, _exit, int status) {
4402 void *ctx;
4403 COMMON_INTERCEPTOR_ENTER(ctx, _exit, status);
4404 COMMON_INTERCEPTOR_USER_CALLBACK_START();
4405 int status1 = COMMON_INTERCEPTOR_ON_EXIT(ctx);
4406 COMMON_INTERCEPTOR_USER_CALLBACK_END();
4407 if (status == 0) status = status1;
4408 REAL(_exit)(status);
4409}
4410#define INIT__EXIT COMMON_INTERCEPT_FUNCTION(_exit);
4411#else
4412#define INIT__EXIT
4413#endif
4414
4415#if SANITIZER_INTERCEPT___LIBC_MUTEX
4416INTERCEPTOR(int, __libc_thr_setcancelstate, int state, int *oldstate)
4417ALIAS(WRAP(pthread_setcancelstate));
4418
4419#define INIT___LIBC_THR_SETCANCELSTATE \
4420 COMMON_INTERCEPT_FUNCTION(__libc_thr_setcancelstate)
4421#else
4422#define INIT___LIBC_THR_SETCANCELSTATE
4423#endif
4424
4425#if SANITIZER_INTERCEPT_GETMNTENT || SANITIZER_INTERCEPT_GETMNTENT_R
4426static void write_mntent(void *ctx, __sanitizer_mntent *mnt) {
4427 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt, sizeof(*mnt));
4428 if (mnt->mnt_fsname)
4429 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_fsname,
4430 internal_strlen(mnt->mnt_fsname) + 1);
4431 if (mnt->mnt_dir)
4432 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_dir,
4433 internal_strlen(mnt->mnt_dir) + 1);
4434 if (mnt->mnt_type)
4435 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_type,
4436 internal_strlen(mnt->mnt_type) + 1);
4437 if (mnt->mnt_opts)
4438 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_opts,
4439 internal_strlen(mnt->mnt_opts) + 1);
4440}
4441#endif
4442
4443#if SANITIZER_INTERCEPT_GETMNTENT
4444INTERCEPTOR(__sanitizer_mntent *, getmntent, void *fp) {
4445 void *ctx;
4446 COMMON_INTERCEPTOR_ENTER(ctx, getmntent, fp);
4447 __sanitizer_mntent *res = REAL(getmntent)(fp);
4448 if (res) write_mntent(ctx, mnt: res);
4449 return res;
4450}
4451#define INIT_GETMNTENT COMMON_INTERCEPT_FUNCTION(getmntent);
4452#else
4453#define INIT_GETMNTENT
4454#endif
4455
4456#if SANITIZER_INTERCEPT_GETMNTENT_R
4457INTERCEPTOR(__sanitizer_mntent *, getmntent_r, void *fp,
4458 __sanitizer_mntent *mntbuf, char *buf, int buflen) {
4459 void *ctx;
4460 COMMON_INTERCEPTOR_ENTER(ctx, getmntent_r, fp, mntbuf, buf, buflen);
4461 __sanitizer_mntent *res = REAL(getmntent_r)(fp, mntbuf, buf, buflen);
4462 if (res) write_mntent(ctx, mnt: res);
4463 return res;
4464}
4465#define INIT_GETMNTENT_R COMMON_INTERCEPT_FUNCTION(getmntent_r);
4466#else
4467#define INIT_GETMNTENT_R
4468#endif
4469
4470#if SANITIZER_INTERCEPT_STATFS
4471INTERCEPTOR(int, statfs, char *path, void *buf) {
4472 void *ctx;
4473 COMMON_INTERCEPTOR_ENTER(ctx, statfs, path, buf);
4474 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4475 // FIXME: under ASan the call below may write to freed memory and corrupt
4476 // its metadata. See
4477 // https://github.com/google/sanitizers/issues/321.
4478 int res = REAL(statfs)(path, buf);
4479 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz);
4480 return res;
4481}
4482INTERCEPTOR(int, fstatfs, int fd, void *buf) {
4483 void *ctx;
4484 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs, fd, buf);
4485 // FIXME: under ASan the call below may write to freed memory and corrupt
4486 // its metadata. See
4487 // https://github.com/google/sanitizers/issues/321.
4488 int res = REAL(fstatfs)(fd, buf);
4489 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz);
4490 return res;
4491}
4492#define INIT_STATFS \
4493 COMMON_INTERCEPT_FUNCTION(statfs); \
4494 COMMON_INTERCEPT_FUNCTION(fstatfs);
4495#else
4496#define INIT_STATFS
4497#endif
4498
4499#if SANITIZER_INTERCEPT_STATFS64
4500INTERCEPTOR(int, statfs64, char *path, void *buf) {
4501 void *ctx;
4502 COMMON_INTERCEPTOR_ENTER(ctx, statfs64, path, buf);
4503 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4504 // FIXME: under ASan the call below may write to freed memory and corrupt
4505 // its metadata. See
4506 // https://github.com/google/sanitizers/issues/321.
4507 int res = REAL(statfs64)(path, buf);
4508 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz);
4509 return res;
4510}
4511INTERCEPTOR(int, fstatfs64, int fd, void *buf) {
4512 void *ctx;
4513 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs64, fd, buf);
4514 // FIXME: under ASan the call below may write to freed memory and corrupt
4515 // its metadata. See
4516 // https://github.com/google/sanitizers/issues/321.
4517 int res = REAL(fstatfs64)(fd, buf);
4518 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz);
4519 return res;
4520}
4521#define INIT_STATFS64 \
4522 COMMON_INTERCEPT_FUNCTION(statfs64); \
4523 COMMON_INTERCEPT_FUNCTION(fstatfs64);
4524#else
4525#define INIT_STATFS64
4526#endif
4527
4528#if SANITIZER_INTERCEPT_STATVFS
4529INTERCEPTOR(int, statvfs, char *path, void *buf) {
4530 void *ctx;
4531 COMMON_INTERCEPTOR_ENTER(ctx, statvfs, path, buf);
4532 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4533 // FIXME: under ASan the call below may write to freed memory and corrupt
4534 // its metadata. See
4535 // https://github.com/google/sanitizers/issues/321.
4536 int res = REAL(statvfs)(path, buf);
4537 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
4538 return res;
4539}
4540INTERCEPTOR(int, fstatvfs, int fd, void *buf) {
4541 void *ctx;
4542 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs, fd, buf);
4543 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
4544 // FIXME: under ASan the call below may write to freed memory and corrupt
4545 // its metadata. See
4546 // https://github.com/google/sanitizers/issues/321.
4547 int res = REAL(fstatvfs)(fd, buf);
4548 if (!res) {
4549 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
4550 if (fd >= 0)
4551 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
4552 }
4553 return res;
4554}
4555#define INIT_STATVFS \
4556 COMMON_INTERCEPT_FUNCTION(statvfs); \
4557 COMMON_INTERCEPT_FUNCTION(fstatvfs);
4558#else
4559#define INIT_STATVFS
4560#endif
4561
4562#if SANITIZER_INTERCEPT_STATVFS64
4563INTERCEPTOR(int, statvfs64, char *path, void *buf) {
4564 void *ctx;
4565 COMMON_INTERCEPTOR_ENTER(ctx, statvfs64, path, buf);
4566 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
4567 // FIXME: under ASan the call below may write to freed memory and corrupt
4568 // its metadata. See
4569 // https://github.com/google/sanitizers/issues/321.
4570 int res = REAL(statvfs64)(path, buf);
4571 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz);
4572 return res;
4573}
4574INTERCEPTOR(int, fstatvfs64, int fd, void *buf) {
4575 void *ctx;
4576 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs64, fd, buf);
4577 // FIXME: under ASan the call below may write to freed memory and corrupt
4578 // its metadata. See
4579 // https://github.com/google/sanitizers/issues/321.
4580 int res = REAL(fstatvfs64)(fd, buf);
4581 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz);
4582 return res;
4583}
4584#define INIT_STATVFS64 \
4585 COMMON_INTERCEPT_FUNCTION(statvfs64); \
4586 COMMON_INTERCEPT_FUNCTION(fstatvfs64);
4587#else
4588#define INIT_STATVFS64
4589#endif
4590
4591#if SANITIZER_INTERCEPT_INITGROUPS
4592INTERCEPTOR(int, initgroups, char *user, u32 group) {
4593 void *ctx;
4594 COMMON_INTERCEPTOR_ENTER(ctx, initgroups, user, group);
4595 if (user) COMMON_INTERCEPTOR_READ_RANGE(ctx, user, internal_strlen(user) + 1);
4596 int res = REAL(initgroups)(user, group);
4597 return res;
4598}
4599#define INIT_INITGROUPS COMMON_INTERCEPT_FUNCTION(initgroups);
4600#else
4601#define INIT_INITGROUPS
4602#endif
4603
4604#if SANITIZER_INTERCEPT_ETHER_NTOA_ATON
4605INTERCEPTOR(char *, ether_ntoa, __sanitizer_ether_addr *addr) {
4606 void *ctx;
4607 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa, addr);
4608 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
4609 char *res = REAL(ether_ntoa)(addr);
4610 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
4611 return res;
4612}
4613INTERCEPTOR(__sanitizer_ether_addr *, ether_aton, char *buf) {
4614 void *ctx;
4615 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton, buf);
4616 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1);
4617 __sanitizer_ether_addr *res = REAL(ether_aton)(buf);
4618 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, sizeof(*res));
4619 return res;
4620}
4621#define INIT_ETHER_NTOA_ATON \
4622 COMMON_INTERCEPT_FUNCTION(ether_ntoa); \
4623 COMMON_INTERCEPT_FUNCTION(ether_aton);
4624#else
4625#define INIT_ETHER_NTOA_ATON
4626#endif
4627
4628#if SANITIZER_INTERCEPT_ETHER_HOST
4629INTERCEPTOR(int, ether_ntohost, char *hostname, __sanitizer_ether_addr *addr) {
4630 void *ctx;
4631 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntohost, hostname, addr);
4632 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
4633 // FIXME: under ASan the call below may write to freed memory and corrupt
4634 // its metadata. See
4635 // https://github.com/google/sanitizers/issues/321.
4636 int res = REAL(ether_ntohost)(hostname, addr);
4637 if (!res && hostname)
4638 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1);
4639 return res;
4640}
4641INTERCEPTOR(int, ether_hostton, char *hostname, __sanitizer_ether_addr *addr) {
4642 void *ctx;
4643 COMMON_INTERCEPTOR_ENTER(ctx, ether_hostton, hostname, addr);
4644 if (hostname)
4645 COMMON_INTERCEPTOR_READ_RANGE(ctx, hostname, internal_strlen(hostname) + 1);
4646 // FIXME: under ASan the call below may write to freed memory and corrupt
4647 // its metadata. See
4648 // https://github.com/google/sanitizers/issues/321.
4649 int res = REAL(ether_hostton)(hostname, addr);
4650 if (!res && addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
4651 return res;
4652}
4653INTERCEPTOR(int, ether_line, char *line, __sanitizer_ether_addr *addr,
4654 char *hostname) {
4655 void *ctx;
4656 COMMON_INTERCEPTOR_ENTER(ctx, ether_line, line, addr, hostname);
4657 if (line) COMMON_INTERCEPTOR_READ_RANGE(ctx, line, internal_strlen(line) + 1);
4658 // FIXME: under ASan the call below may write to freed memory and corrupt
4659 // its metadata. See
4660 // https://github.com/google/sanitizers/issues/321.
4661 int res = REAL(ether_line)(line, addr, hostname);
4662 if (!res) {
4663 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
4664 if (hostname)
4665 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1);
4666 }
4667 return res;
4668}
4669#define INIT_ETHER_HOST \
4670 COMMON_INTERCEPT_FUNCTION(ether_ntohost); \
4671 COMMON_INTERCEPT_FUNCTION(ether_hostton); \
4672 COMMON_INTERCEPT_FUNCTION(ether_line);
4673#else
4674#define INIT_ETHER_HOST
4675#endif
4676
4677#if SANITIZER_INTERCEPT_ETHER_R
4678INTERCEPTOR(char *, ether_ntoa_r, __sanitizer_ether_addr *addr, char *buf) {
4679 void *ctx;
4680 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa_r, addr, buf);
4681 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
4682 // FIXME: under ASan the call below may write to freed memory and corrupt
4683 // its metadata. See
4684 // https://github.com/google/sanitizers/issues/321.
4685 char *res = REAL(ether_ntoa_r)(addr, buf);
4686 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
4687 return res;
4688}
4689INTERCEPTOR(__sanitizer_ether_addr *, ether_aton_r, char *buf,
4690 __sanitizer_ether_addr *addr) {
4691 void *ctx;
4692 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton_r, buf, addr);
4693 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1);
4694 // FIXME: under ASan the call below may write to freed memory and corrupt
4695 // its metadata. See
4696 // https://github.com/google/sanitizers/issues/321.
4697 __sanitizer_ether_addr *res = REAL(ether_aton_r)(buf, addr);
4698 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(*res));
4699 return res;
4700}
4701#define INIT_ETHER_R \
4702 COMMON_INTERCEPT_FUNCTION(ether_ntoa_r); \
4703 COMMON_INTERCEPT_FUNCTION(ether_aton_r);
4704#else
4705#define INIT_ETHER_R
4706#endif
4707
4708#if SANITIZER_INTERCEPT_SHMCTL
4709INTERCEPTOR(int, shmctl, int shmid, int cmd, void *buf) {
4710 void *ctx;
4711 COMMON_INTERCEPTOR_ENTER(ctx, shmctl, shmid, cmd, buf);
4712 // FIXME: under ASan the call below may write to freed memory and corrupt
4713 // its metadata. See
4714 // https://github.com/google/sanitizers/issues/321.
4715 int res = REAL(shmctl)(shmid, cmd, buf);
4716 if (res >= 0) {
4717 unsigned sz = 0;
4718 if (cmd == shmctl_ipc_stat || cmd == shmctl_shm_stat)
4719 sz = sizeof(__sanitizer_shmid_ds);
4720 else if (cmd == shmctl_ipc_info)
4721 sz = struct_shminfo_sz;
4722 else if (cmd == shmctl_shm_info)
4723 sz = struct_shm_info_sz;
4724 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz);
4725 }
4726 return res;
4727}
4728#define INIT_SHMCTL COMMON_INTERCEPT_FUNCTION(shmctl);
4729#else
4730#define INIT_SHMCTL
4731#endif
4732
4733#if SANITIZER_INTERCEPT_RANDOM_R
4734INTERCEPTOR(int, random_r, void *buf, u32 *result) {
4735 void *ctx;
4736 COMMON_INTERCEPTOR_ENTER(ctx, random_r, buf, result);
4737 // FIXME: under ASan the call below may write to freed memory and corrupt
4738 // its metadata. See
4739 // https://github.com/google/sanitizers/issues/321.
4740 int res = REAL(random_r)(buf, result);
4741 if (!res && result)
4742 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
4743 return res;
4744}
4745#define INIT_RANDOM_R COMMON_INTERCEPT_FUNCTION(random_r);
4746#else
4747#define INIT_RANDOM_R
4748#endif
4749
4750// FIXME: under ASan the REAL() call below may write to freed memory and corrupt
4751// its metadata. See
4752// https://github.com/google/sanitizers/issues/321.
4753#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET || \
4754 SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED || \
4755 SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSSCHED || \
4756 SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GET || \
4757 SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GET || \
4758 SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GET || \
4759 SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GET
4760#define INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(fn, sz) \
4761 INTERCEPTOR(int, fn, void *attr, void *r) { \
4762 void *ctx; \
4763 COMMON_INTERCEPTOR_ENTER(ctx, fn, attr, r); \
4764 int res = REAL(fn)(attr, r); \
4765 if (!res && r) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, r, sz); \
4766 return res; \
4767 }
4768#define INTERCEPTOR_PTHREAD_ATTR_GET(what, sz) \
4769 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_attr_get##what, sz)
4770#define INTERCEPTOR_PTHREAD_MUTEXATTR_GET(what, sz) \
4771 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_mutexattr_get##what, sz)
4772#define INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(what, sz) \
4773 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_rwlockattr_get##what, sz)
4774#define INTERCEPTOR_PTHREAD_CONDATTR_GET(what, sz) \
4775 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_condattr_get##what, sz)
4776#define INTERCEPTOR_PTHREAD_BARRIERATTR_GET(what, sz) \
4777 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_barrierattr_get##what, sz)
4778#endif
4779
4780#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET
4781INTERCEPTOR_PTHREAD_ATTR_GET(detachstate, sizeof(int))
4782INTERCEPTOR_PTHREAD_ATTR_GET(guardsize, sizeof(SIZE_T))
4783INTERCEPTOR_PTHREAD_ATTR_GET(scope, sizeof(int))
4784INTERCEPTOR_PTHREAD_ATTR_GET(stacksize, sizeof(SIZE_T))
4785INTERCEPTOR(int, pthread_attr_getstack, void *attr, void **addr, SIZE_T *size) {
4786 void *ctx;
4787 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getstack, attr, addr, size);
4788 // FIXME: under ASan the call below may write to freed memory and corrupt
4789 // its metadata. See
4790 // https://github.com/google/sanitizers/issues/321.
4791 int res = REAL(pthread_attr_getstack)(attr, addr, size);
4792 if (!res) {
4793 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
4794 if (size) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, size, sizeof(*size));
4795 }
4796 return res;
4797}
4798
4799// We may need to call the real pthread_attr_getstack from the run-time
4800// in sanitizer_common, but we don't want to include the interception headers
4801// there. So, just define this function here.
4802namespace __sanitizer {
4803extern "C" {
4804int real_pthread_attr_getstack(void *attr, void **addr, SIZE_T *size) {
4805 return REAL(pthread_attr_getstack)(attr, addr, size);
4806}
4807} // extern "C"
4808} // namespace __sanitizer
4809
4810#define INIT_PTHREAD_ATTR_GET \
4811 COMMON_INTERCEPT_FUNCTION(pthread_attr_getdetachstate); \
4812 COMMON_INTERCEPT_FUNCTION(pthread_attr_getguardsize); \
4813 COMMON_INTERCEPT_FUNCTION(pthread_attr_getscope); \
4814 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstacksize); \
4815 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstack);
4816#else
4817#define INIT_PTHREAD_ATTR_GET
4818#endif
4819
4820#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED
4821INTERCEPTOR_PTHREAD_ATTR_GET(schedparam, struct_sched_param_sz)
4822INTERCEPTOR_PTHREAD_ATTR_GET(schedpolicy, sizeof(int))
4823
4824#define INIT_PTHREAD_ATTR_GET_SCHED \
4825 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedparam); \
4826 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedpolicy);
4827#else
4828#define INIT_PTHREAD_ATTR_GET_SCHED
4829#endif
4830
4831#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED
4832INTERCEPTOR_PTHREAD_ATTR_GET(inheritsched, sizeof(int))
4833
4834#define INIT_PTHREAD_ATTR_GETINHERITSCHED \
4835 COMMON_INTERCEPT_FUNCTION(pthread_attr_getinheritsched);
4836#else
4837#define INIT_PTHREAD_ATTR_GETINHERITSCHED
4838#endif
4839
4840#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP
4841INTERCEPTOR(int, pthread_attr_getaffinity_np, void *attr, SIZE_T cpusetsize,
4842 void *cpuset) {
4843 void *ctx;
4844 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getaffinity_np, attr, cpusetsize,
4845 cpuset);
4846 // FIXME: under ASan the call below may write to freed memory and corrupt
4847 // its metadata. See
4848 // https://github.com/google/sanitizers/issues/321.
4849 int res = REAL(pthread_attr_getaffinity_np)(attr, cpusetsize, cpuset);
4850 if (!res && cpusetsize && cpuset)
4851 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize);
4852 return res;
4853}
4854
4855#define INIT_PTHREAD_ATTR_GETAFFINITY_NP \
4856 COMMON_INTERCEPT_FUNCTION(pthread_attr_getaffinity_np);
4857#else
4858#define INIT_PTHREAD_ATTR_GETAFFINITY_NP
4859#endif
4860
4861#if SANITIZER_INTERCEPT_PTHREAD_GETAFFINITY_NP
4862INTERCEPTOR(int, pthread_getaffinity_np, void *attr, SIZE_T cpusetsize,
4863 void *cpuset) {
4864 void *ctx;
4865 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getaffinity_np, attr, cpusetsize,
4866 cpuset);
4867 // FIXME: under ASan the call below may write to freed memory and corrupt
4868 // its metadata. See
4869 // https://github.com/google/sanitizers/issues/321.
4870 int res = REAL(pthread_getaffinity_np)(attr, cpusetsize, cpuset);
4871 if (!res && cpusetsize && cpuset)
4872 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize);
4873 return res;
4874}
4875
4876#define INIT_PTHREAD_GETAFFINITY_NP \
4877 COMMON_INTERCEPT_FUNCTION(pthread_getaffinity_np);
4878#else
4879#define INIT_PTHREAD_GETAFFINITY_NP
4880#endif
4881
4882#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPSHARED
4883INTERCEPTOR_PTHREAD_MUTEXATTR_GET(pshared, sizeof(int))
4884#define INIT_PTHREAD_MUTEXATTR_GETPSHARED \
4885 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getpshared);
4886#else
4887#define INIT_PTHREAD_MUTEXATTR_GETPSHARED
4888#endif
4889
4890#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETTYPE
4891INTERCEPTOR_PTHREAD_MUTEXATTR_GET(type, sizeof(int))
4892#define INIT_PTHREAD_MUTEXATTR_GETTYPE \
4893 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_gettype);
4894#else
4895#define INIT_PTHREAD_MUTEXATTR_GETTYPE
4896#endif
4897
4898#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPROTOCOL
4899INTERCEPTOR_PTHREAD_MUTEXATTR_GET(protocol, sizeof(int))
4900#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL \
4901 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprotocol);
4902#else
4903#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL
4904#endif
4905
4906#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPRIOCEILING
4907INTERCEPTOR_PTHREAD_MUTEXATTR_GET(prioceiling, sizeof(int))
4908#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING \
4909 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprioceiling);
4910#else
4911#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING
4912#endif
4913
4914#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST
4915INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust, sizeof(int))
4916#define INIT_PTHREAD_MUTEXATTR_GETROBUST \
4917 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust);
4918#else
4919#define INIT_PTHREAD_MUTEXATTR_GETROBUST
4920#endif
4921
4922#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST_NP
4923INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust_np, sizeof(int))
4924#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP \
4925 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust_np);
4926#else
4927#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP
4928#endif
4929
4930#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETPSHARED
4931INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(pshared, sizeof(int))
4932#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED \
4933 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getpshared);
4934#else
4935#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED
4936#endif
4937
4938#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETKIND_NP
4939INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(kind_np, sizeof(int))
4940#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP \
4941 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getkind_np);
4942#else
4943#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP
4944#endif
4945
4946#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETPSHARED
4947INTERCEPTOR_PTHREAD_CONDATTR_GET(pshared, sizeof(int))
4948#define INIT_PTHREAD_CONDATTR_GETPSHARED \
4949 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getpshared);
4950#else
4951#define INIT_PTHREAD_CONDATTR_GETPSHARED
4952#endif
4953
4954#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETCLOCK
4955INTERCEPTOR_PTHREAD_CONDATTR_GET(clock, sizeof(int))
4956#define INIT_PTHREAD_CONDATTR_GETCLOCK \
4957 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getclock);
4958#else
4959#define INIT_PTHREAD_CONDATTR_GETCLOCK
4960#endif
4961
4962#if SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED
4963INTERCEPTOR_PTHREAD_BARRIERATTR_GET(pshared, sizeof(int)) // !mac !android
4964#define INIT_PTHREAD_BARRIERATTR_GETPSHARED \
4965 COMMON_INTERCEPT_FUNCTION(pthread_barrierattr_getpshared);
4966#else
4967#define INIT_PTHREAD_BARRIERATTR_GETPSHARED
4968#endif
4969
4970#if SANITIZER_INTERCEPT_TMPNAM
4971INTERCEPTOR(char *, tmpnam, char *s) {
4972 void *ctx;
4973 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam, s);
4974 char *res = REAL(tmpnam)(s);
4975 if (res) {
4976 if (s)
4977 // FIXME: under ASan the call below may write to freed memory and corrupt
4978 // its metadata. See
4979 // https://github.com/google/sanitizers/issues/321.
4980 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1);
4981 else
4982 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
4983 }
4984 return res;
4985}
4986#define INIT_TMPNAM COMMON_INTERCEPT_FUNCTION(tmpnam);
4987#else
4988#define INIT_TMPNAM
4989#endif
4990
4991#if SANITIZER_INTERCEPT_TMPNAM_R
4992INTERCEPTOR(char *, tmpnam_r, char *s) {
4993 void *ctx;
4994 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam_r, s);
4995 // FIXME: under ASan the call below may write to freed memory and corrupt
4996 // its metadata. See
4997 // https://github.com/google/sanitizers/issues/321.
4998 char *res = REAL(tmpnam_r)(s);
4999 if (res && s) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1);
5000 return res;
5001}
5002#define INIT_TMPNAM_R COMMON_INTERCEPT_FUNCTION(tmpnam_r);
5003#else
5004#define INIT_TMPNAM_R
5005#endif
5006
5007#if SANITIZER_INTERCEPT_PTSNAME
5008INTERCEPTOR(char *, ptsname, int fd) {
5009 void *ctx;
5010 COMMON_INTERCEPTOR_ENTER(ctx, ptsname, fd);
5011 char *res = REAL(ptsname)(fd);
5012 if (res != nullptr)
5013 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
5014 return res;
5015}
5016#define INIT_PTSNAME COMMON_INTERCEPT_FUNCTION(ptsname);
5017#else
5018#define INIT_PTSNAME
5019#endif
5020
5021#if SANITIZER_INTERCEPT_PTSNAME_R
5022INTERCEPTOR(int, ptsname_r, int fd, char *name, SIZE_T namesize) {
5023 void *ctx;
5024 COMMON_INTERCEPTOR_ENTER(ctx, ptsname_r, fd, name, namesize);
5025 int res = REAL(ptsname_r)(fd, name, namesize);
5026 if (res == 0)
5027 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
5028 return res;
5029}
5030#define INIT_PTSNAME_R COMMON_INTERCEPT_FUNCTION(ptsname_r);
5031#else
5032#define INIT_PTSNAME_R
5033#endif
5034
5035#if SANITIZER_INTERCEPT_TTYNAME
5036INTERCEPTOR(char *, ttyname, int fd) {
5037 void *ctx;
5038 COMMON_INTERCEPTOR_ENTER(ctx, ttyname, fd);
5039 char *res = REAL(ttyname)(fd);
5040 if (res != nullptr)
5041 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
5042 return res;
5043}
5044#define INIT_TTYNAME COMMON_INTERCEPT_FUNCTION(ttyname);
5045#else
5046#define INIT_TTYNAME
5047#endif
5048
5049#if SANITIZER_INTERCEPT_TTYNAME_R
5050INTERCEPTOR(int, ttyname_r, int fd, char *name, SIZE_T namesize) {
5051 void *ctx;
5052 COMMON_INTERCEPTOR_ENTER(ctx, ttyname_r, fd, name, namesize);
5053 int res = REAL(ttyname_r)(fd, name, namesize);
5054 if (res == 0)
5055 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
5056 return res;
5057}
5058#define INIT_TTYNAME_R COMMON_INTERCEPT_FUNCTION(ttyname_r);
5059#else
5060#define INIT_TTYNAME_R
5061#endif
5062
5063#if SANITIZER_INTERCEPT_TEMPNAM
5064INTERCEPTOR(char *, tempnam, char *dir, char *pfx) {
5065 void *ctx;
5066 COMMON_INTERCEPTOR_ENTER(ctx, tempnam, dir, pfx);
5067 if (dir) COMMON_INTERCEPTOR_READ_RANGE(ctx, dir, internal_strlen(dir) + 1);
5068 if (pfx) COMMON_INTERCEPTOR_READ_RANGE(ctx, pfx, internal_strlen(pfx) + 1);
5069 char *res = REAL(tempnam)(dir, pfx);
5070 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
5071 return res;
5072}
5073#define INIT_TEMPNAM COMMON_INTERCEPT_FUNCTION(tempnam);
5074#else
5075#define INIT_TEMPNAM
5076#endif
5077
5078#if SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && !SANITIZER_NETBSD
5079INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name) {
5080 void *ctx;
5081 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name);
5082 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0);
5083 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name);
5084 return REAL(pthread_setname_np)(thread, name);
5085}
5086#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np);
5087#elif SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && SANITIZER_NETBSD
5088INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name, void *arg) {
5089 void *ctx;
5090 char newname[32]; // PTHREAD_MAX_NAMELEN_NP=32
5091 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name, arg);
5092 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0);
5093 internal_snprintf(newname, sizeof(newname), name, arg);
5094 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, newname);
5095 return REAL(pthread_setname_np)(thread, name, arg);
5096}
5097#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np);
5098#else
5099#define INIT_PTHREAD_SETNAME_NP
5100#endif
5101
5102#if SANITIZER_INTERCEPT_PTHREAD_GETNAME_NP
5103INTERCEPTOR(int, pthread_getname_np, uptr thread, char *name, SIZE_T len) {
5104 void *ctx;
5105 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getname_np, thread, name, len);
5106 int res = REAL(pthread_getname_np)(thread, name, len);
5107 if (!res)
5108 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strnlen(name, len) + 1);
5109 return res;
5110}
5111#define INIT_PTHREAD_GETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_getname_np);
5112#else
5113#define INIT_PTHREAD_GETNAME_NP
5114#endif
5115
5116#if SANITIZER_INTERCEPT_SINCOS
5117INTERCEPTOR(void, sincos, double x, double *sin, double *cos) {
5118 void *ctx;
5119 COMMON_INTERCEPTOR_ENTER(ctx, sincos, x, sin, cos);
5120 // FIXME: under ASan the call below may write to freed memory and corrupt
5121 // its metadata. See
5122 // https://github.com/google/sanitizers/issues/321.
5123 REAL(sincos)(x, sin, cos);
5124 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
5125 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
5126}
5127INTERCEPTOR(void, sincosf, float x, float *sin, float *cos) {
5128 void *ctx;
5129 COMMON_INTERCEPTOR_ENTER(ctx, sincosf, x, sin, cos);
5130 // FIXME: under ASan the call below may write to freed memory and corrupt
5131 // its metadata. See
5132 // https://github.com/google/sanitizers/issues/321.
5133 REAL(sincosf)(x, sin, cos);
5134 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
5135 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
5136}
5137INTERCEPTOR(void, sincosl, long double x, long double *sin, long double *cos) {
5138 void *ctx;
5139 COMMON_INTERCEPTOR_ENTER(ctx, sincosl, x, sin, cos);
5140 // FIXME: under ASan the call below may write to freed memory and corrupt
5141 // its metadata. See
5142 // https://github.com/google/sanitizers/issues/321.
5143 REAL(sincosl)(x, sin, cos);
5144 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
5145 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
5146}
5147#define INIT_SINCOS \
5148 COMMON_INTERCEPT_FUNCTION(sincos); \
5149 COMMON_INTERCEPT_FUNCTION(sincosf); \
5150 COMMON_INTERCEPT_FUNCTION_LDBL(sincosl);
5151#else
5152#define INIT_SINCOS
5153#endif
5154
5155#if SANITIZER_INTERCEPT_REMQUO
5156INTERCEPTOR(double, remquo, double x, double y, int *quo) {
5157 void *ctx;
5158 COMMON_INTERCEPTOR_ENTER(ctx, remquo, x, y, quo);
5159 // FIXME: under ASan the call below may write to freed memory and corrupt
5160 // its metadata. See
5161 // https://github.com/google/sanitizers/issues/321.
5162 double res = REAL(remquo)(x, y, quo);
5163 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
5164 return res;
5165}
5166INTERCEPTOR(float, remquof, float x, float y, int *quo) {
5167 void *ctx;
5168 COMMON_INTERCEPTOR_ENTER(ctx, remquof, x, y, quo);
5169 // FIXME: under ASan the call below may write to freed memory and corrupt
5170 // its metadata. See
5171 // https://github.com/google/sanitizers/issues/321.
5172 float res = REAL(remquof)(x, y, quo);
5173 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
5174 return res;
5175}
5176#define INIT_REMQUO \
5177 COMMON_INTERCEPT_FUNCTION(remquo); \
5178 COMMON_INTERCEPT_FUNCTION(remquof);
5179#else
5180#define INIT_REMQUO
5181#endif
5182
5183#if SANITIZER_INTERCEPT_REMQUOL
5184INTERCEPTOR(long double, remquol, long double x, long double y, int *quo) {
5185 void *ctx;
5186 COMMON_INTERCEPTOR_ENTER(ctx, remquol, x, y, quo);
5187 // FIXME: under ASan the call below may write to freed memory and corrupt
5188 // its metadata. See
5189 // https://github.com/google/sanitizers/issues/321.
5190 long double res = REAL(remquol)(x, y, quo);
5191 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
5192 return res;
5193}
5194#define INIT_REMQUOL \
5195 COMMON_INTERCEPT_FUNCTION_LDBL(remquol);
5196#else
5197#define INIT_REMQUOL
5198#endif
5199
5200#if SANITIZER_INTERCEPT_LGAMMA
5201extern int signgam;
5202INTERCEPTOR(double, lgamma, double x) {
5203 void *ctx;
5204 COMMON_INTERCEPTOR_ENTER(ctx, lgamma, x);
5205 double res = REAL(lgamma)(x);
5206 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
5207 return res;
5208}
5209INTERCEPTOR(float, lgammaf, float x) {
5210 void *ctx;
5211 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf, x);
5212 float res = REAL(lgammaf)(x);
5213 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
5214 return res;
5215}
5216#define INIT_LGAMMA \
5217 COMMON_INTERCEPT_FUNCTION(lgamma); \
5218 COMMON_INTERCEPT_FUNCTION(lgammaf);
5219#else
5220#define INIT_LGAMMA
5221#endif
5222
5223#if SANITIZER_INTERCEPT_LGAMMAL
5224INTERCEPTOR(long double, lgammal, long double x) {
5225 void *ctx;
5226 COMMON_INTERCEPTOR_ENTER(ctx, lgammal, x);
5227 long double res = REAL(lgammal)(x);
5228 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
5229 return res;
5230}
5231#define INIT_LGAMMAL \
5232 COMMON_INTERCEPT_FUNCTION_LDBL(lgammal);
5233#else
5234#define INIT_LGAMMAL
5235#endif
5236
5237#if SANITIZER_INTERCEPT_LGAMMA_R
5238INTERCEPTOR(double, lgamma_r, double x, int *signp) {
5239 void *ctx;
5240 COMMON_INTERCEPTOR_ENTER(ctx, lgamma_r, x, signp);
5241 // FIXME: under ASan the call below may write to freed memory and corrupt
5242 // its metadata. See
5243 // https://github.com/google/sanitizers/issues/321.
5244 double res = REAL(lgamma_r)(x, signp);
5245 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
5246 return res;
5247}
5248INTERCEPTOR(float, lgammaf_r, float x, int *signp) {
5249 void *ctx;
5250 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf_r, x, signp);
5251 // FIXME: under ASan the call below may write to freed memory and corrupt
5252 // its metadata. See
5253 // https://github.com/google/sanitizers/issues/321.
5254 float res = REAL(lgammaf_r)(x, signp);
5255 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
5256 return res;
5257}
5258#define INIT_LGAMMA_R \
5259 COMMON_INTERCEPT_FUNCTION(lgamma_r); \
5260 COMMON_INTERCEPT_FUNCTION(lgammaf_r);
5261#else
5262#define INIT_LGAMMA_R
5263#endif
5264
5265#if SANITIZER_INTERCEPT_LGAMMAL_R
5266INTERCEPTOR(long double, lgammal_r, long double x, int *signp) {
5267 void *ctx;
5268 COMMON_INTERCEPTOR_ENTER(ctx, lgammal_r, x, signp);
5269 // FIXME: under ASan the call below may write to freed memory and corrupt
5270 // its metadata. See
5271 // https://github.com/google/sanitizers/issues/321.
5272 long double res = REAL(lgammal_r)(x, signp);
5273 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
5274 return res;
5275}
5276#define INIT_LGAMMAL_R COMMON_INTERCEPT_FUNCTION_LDBL(lgammal_r);
5277#else
5278#define INIT_LGAMMAL_R
5279#endif
5280
5281#if SANITIZER_INTERCEPT_DRAND48_R
5282INTERCEPTOR(int, drand48_r, void *buffer, double *result) {
5283 void *ctx;
5284 COMMON_INTERCEPTOR_ENTER(ctx, drand48_r, buffer, result);
5285 // FIXME: under ASan the call below may write to freed memory and corrupt
5286 // its metadata. See
5287 // https://github.com/google/sanitizers/issues/321.
5288 int res = REAL(drand48_r)(buffer, result);
5289 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
5290 return res;
5291}
5292INTERCEPTOR(int, lrand48_r, void *buffer, long *result) {
5293 void *ctx;
5294 COMMON_INTERCEPTOR_ENTER(ctx, lrand48_r, buffer, result);
5295 // FIXME: under ASan the call below may write to freed memory and corrupt
5296 // its metadata. See
5297 // https://github.com/google/sanitizers/issues/321.
5298 int res = REAL(lrand48_r)(buffer, result);
5299 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
5300 return res;
5301}
5302#define INIT_DRAND48_R \
5303 COMMON_INTERCEPT_FUNCTION(drand48_r); \
5304 COMMON_INTERCEPT_FUNCTION(lrand48_r);
5305#else
5306#define INIT_DRAND48_R
5307#endif
5308
5309#if SANITIZER_INTERCEPT_RAND_R
5310INTERCEPTOR(int, rand_r, unsigned *seedp) {
5311 void *ctx;
5312 COMMON_INTERCEPTOR_ENTER(ctx, rand_r, seedp);
5313 COMMON_INTERCEPTOR_READ_RANGE(ctx, seedp, sizeof(*seedp));
5314 return REAL(rand_r)(seedp);
5315}
5316#define INIT_RAND_R COMMON_INTERCEPT_FUNCTION(rand_r);
5317#else
5318#define INIT_RAND_R
5319#endif
5320
5321#if SANITIZER_INTERCEPT_GETLINE
5322INTERCEPTOR(SSIZE_T, getline, char **lineptr, SIZE_T *n, void *stream) {
5323 void *ctx;
5324 COMMON_INTERCEPTOR_ENTER(ctx, getline, lineptr, n, stream);
5325 // FIXME: under ASan the call below may write to freed memory and corrupt
5326 // its metadata. See
5327 // https://github.com/google/sanitizers/issues/321.
5328 SSIZE_T res = REAL(getline)(lineptr, n, stream);
5329 if (res > 0) {
5330 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr));
5331 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
5332 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1);
5333 }
5334 return res;
5335}
5336
5337// FIXME: under ASan the call below may write to freed memory and corrupt its
5338// metadata. See
5339// https://github.com/google/sanitizers/issues/321.
5340#define GETDELIM_INTERCEPTOR_IMPL(vname) \
5341 { \
5342 void *ctx; \
5343 COMMON_INTERCEPTOR_ENTER(ctx, vname, lineptr, n, delim, stream); \
5344 SSIZE_T res = REAL(vname)(lineptr, n, delim, stream); \
5345 if (res > 0) { \
5346 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); \
5347 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); \
5348 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); \
5349 } \
5350 return res; \
5351 }
5352
5353INTERCEPTOR(SSIZE_T, __getdelim, char **lineptr, SIZE_T *n, int delim,
5354 void *stream)
5355GETDELIM_INTERCEPTOR_IMPL(__getdelim)
5356
5357// There's no __getdelim() on FreeBSD so we supply the getdelim() interceptor
5358// with its own body.
5359INTERCEPTOR(SSIZE_T, getdelim, char **lineptr, SIZE_T *n, int delim,
5360 void *stream)
5361GETDELIM_INTERCEPTOR_IMPL(getdelim)
5362
5363#define INIT_GETLINE \
5364 COMMON_INTERCEPT_FUNCTION(getline); \
5365 COMMON_INTERCEPT_FUNCTION(__getdelim); \
5366 COMMON_INTERCEPT_FUNCTION(getdelim);
5367#else
5368#define INIT_GETLINE
5369#endif
5370
5371#if SANITIZER_INTERCEPT_ICONV
5372INTERCEPTOR(SIZE_T, iconv, void *cd, char **inbuf, SIZE_T *inbytesleft,
5373 char **outbuf, SIZE_T *outbytesleft) {
5374 void *ctx;
5375 COMMON_INTERCEPTOR_ENTER(ctx, iconv, cd, inbuf, inbytesleft, outbuf,
5376 outbytesleft);
5377 if (inbytesleft)
5378 COMMON_INTERCEPTOR_READ_RANGE(ctx, inbytesleft, sizeof(*inbytesleft));
5379 if (inbuf && inbytesleft)
5380 COMMON_INTERCEPTOR_READ_RANGE(ctx, *inbuf, *inbytesleft);
5381 if (outbytesleft)
5382 COMMON_INTERCEPTOR_READ_RANGE(ctx, outbytesleft, sizeof(*outbytesleft));
5383 void *outbuf_orig = outbuf ? *outbuf : nullptr;
5384 // FIXME: under ASan the call below may write to freed memory and corrupt
5385 // its metadata. See
5386 // https://github.com/google/sanitizers/issues/321.
5387 SIZE_T res = REAL(iconv)(cd, inbuf, inbytesleft, outbuf, outbytesleft);
5388 if (outbuf && *outbuf > outbuf_orig) {
5389 SIZE_T sz = (char *)*outbuf - (char *)outbuf_orig;
5390 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, outbuf_orig, sz);
5391 }
5392 return res;
5393}
5394#define INIT_ICONV COMMON_INTERCEPT_FUNCTION(iconv);
5395#else
5396#define INIT_ICONV
5397#endif
5398
5399#if SANITIZER_INTERCEPT_TIMES
5400INTERCEPTOR(__sanitizer_clock_t, times, void *tms) {
5401 void *ctx;
5402 COMMON_INTERCEPTOR_ENTER(ctx, times, tms);
5403 // FIXME: under ASan the call below may write to freed memory and corrupt
5404 // its metadata. See
5405 // https://github.com/google/sanitizers/issues/321.
5406 __sanitizer_clock_t res = REAL(times)(tms);
5407 if (res != (__sanitizer_clock_t)-1 && tms)
5408 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tms, struct_tms_sz);
5409 return res;
5410}
5411#define INIT_TIMES COMMON_INTERCEPT_FUNCTION(times);
5412#else
5413#define INIT_TIMES
5414#endif
5415
5416#if SANITIZER_S390 && \
5417 (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET)
5418extern "C" uptr __tls_get_offset_wrapper(void *arg, uptr (*fn)(void *arg));
5419DEFINE_REAL(uptr, __tls_get_offset, void *arg)
5420#endif
5421
5422#if SANITIZER_INTERCEPT_TLS_GET_ADDR
5423#if !SANITIZER_S390
5424#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_addr)
5425// If you see any crashes around this functions, there are 2 known issues with
5426// it: 1. __tls_get_addr can be called with mis-aligned stack due to:
5427// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066
5428// 2. It can be called recursively if sanitizer code uses __tls_get_addr
5429// to access thread local variables (it should not happen normally,
5430// because sanitizers use initial-exec tls model).
5431INTERCEPTOR(void *, __tls_get_addr, void *arg) {
5432 void *ctx;
5433 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr, arg);
5434 void *res = REAL(__tls_get_addr)(arg);
5435 uptr tls_begin, tls_end;
5436 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end);
5437 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, res, static_tls_begin: tls_begin, static_tls_end: tls_end);
5438 if (dtv) {
5439 // New DTLS block has been allocated.
5440 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size);
5441 }
5442 return res;
5443}
5444#if SANITIZER_PPC
5445// On PowerPC, we also need to intercept __tls_get_addr_opt, which has
5446// mostly the same semantics as __tls_get_addr, but its presence enables
5447// some optimizations in linker (which are safe to ignore here).
5448INTERCEPTOR(void *, __tls_get_addr_opt, void *arg) ALIAS(WRAP(__tls_get_addr));
5449#endif
5450#else // SANITIZER_S390
5451// On s390, we have to intercept two functions here:
5452// - __tls_get_addr_internal, which is a glibc-internal function that is like
5453// the usual __tls_get_addr, but returns a TP-relative offset instead of
5454// a proper pointer. It is used by dlsym for TLS symbols.
5455// - __tls_get_offset, which is like the above, but also takes a GOT-relative
5456// descriptor offset as an argument instead of a pointer. GOT address
5457// is passed in r12, so it's necessary to write it in assembly. This is
5458// the function used by the compiler.
5459#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_offset)
5460INTERCEPTOR(uptr, __tls_get_addr_internal, void *arg) {
5461 void *ctx;
5462 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr_internal, arg);
5463 uptr res = __tls_get_offset_wrapper(arg, REAL(__tls_get_offset));
5464 uptr tp = reinterpret_cast<uptr>(__builtin_thread_pointer());
5465 void *ptr = reinterpret_cast<void *>(res + tp);
5466 uptr tls_begin, tls_end;
5467 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end);
5468 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, ptr, tls_begin, tls_end);
5469 if (dtv) {
5470 // New DTLS block has been allocated.
5471 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size);
5472 }
5473 return res;
5474}
5475#endif // SANITIZER_S390
5476#else
5477#define INIT_TLS_GET_ADDR
5478#endif
5479
5480#if SANITIZER_S390 && \
5481 (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET)
5482// We need a hidden symbol aliasing the above, so that we can jump
5483// directly to it from the assembly below.
5484extern "C" __attribute__((visibility("hidden"))) uptr __tls_get_addr_hidden(
5485 void *arg) ALIAS(WRAP(__tls_get_addr_internal));
5486extern "C" uptr __tls_get_offset(void *arg);
5487extern "C" uptr TRAMPOLINE(__tls_get_offset)(void *arg);
5488extern "C" uptr WRAP(__tls_get_offset)(void *arg);
5489// Now carefully intercept __tls_get_offset.
5490asm(
5491 ".text\n"
5492// The __intercept_ version has to exist, so that gen_dynamic_list.py
5493// exports our symbol.
5494 ".weak __tls_get_offset\n"
5495 ".set __tls_get_offset, __interceptor___tls_get_offset\n"
5496 ".global __interceptor___tls_get_offset\n"
5497 ".type __interceptor___tls_get_offset, @function\n"
5498 "__interceptor___tls_get_offset:\n"
5499#ifdef __s390x__
5500 "la %r2, 0(%r2,%r12)\n"
5501 "jg __tls_get_addr_hidden\n"
5502#else
5503 "basr %r3,0\n"
5504 "0: la %r2,0(%r2,%r12)\n"
5505 "l %r4,1f-0b(%r3)\n"
5506 "b 0(%r4,%r3)\n"
5507 "1: .long __tls_get_addr_hidden - 0b\n"
5508#endif
5509 ".size __interceptor___tls_get_offset, .-__interceptor___tls_get_offset\n"
5510// Assembly wrapper to call REAL(__tls_get_offset)(arg)
5511 ".type __tls_get_offset_wrapper, @function\n"
5512 "__tls_get_offset_wrapper:\n"
5513#ifdef __s390x__
5514 "sgr %r2,%r12\n"
5515#else
5516 "sr %r2,%r12\n"
5517#endif
5518 "br %r3\n"
5519 ".size __tls_get_offset_wrapper, .-__tls_get_offset_wrapper\n"
5520);
5521#endif
5522
5523#if SANITIZER_INTERCEPT_LISTXATTR
5524INTERCEPTOR(SSIZE_T, listxattr, const char *path, char *list, SIZE_T size) {
5525 void *ctx;
5526 COMMON_INTERCEPTOR_ENTER(ctx, listxattr, path, list, size);
5527 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5528 // FIXME: under ASan the call below may write to freed memory and corrupt
5529 // its metadata. See
5530 // https://github.com/google/sanitizers/issues/321.
5531 SSIZE_T res = REAL(listxattr)(path, list, size);
5532 // Here and below, size == 0 is a special case where nothing is written to the
5533 // buffer, and res contains the desired buffer size.
5534 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
5535 return res;
5536}
5537INTERCEPTOR(SSIZE_T, llistxattr, const char *path, char *list, SIZE_T size) {
5538 void *ctx;
5539 COMMON_INTERCEPTOR_ENTER(ctx, llistxattr, path, list, size);
5540 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5541 // FIXME: under ASan the call below may write to freed memory and corrupt
5542 // its metadata. See
5543 // https://github.com/google/sanitizers/issues/321.
5544 SSIZE_T res = REAL(llistxattr)(path, list, size);
5545 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
5546 return res;
5547}
5548INTERCEPTOR(SSIZE_T, flistxattr, int fd, char *list, SIZE_T size) {
5549 void *ctx;
5550 COMMON_INTERCEPTOR_ENTER(ctx, flistxattr, fd, list, size);
5551 // FIXME: under ASan the call below may write to freed memory and corrupt
5552 // its metadata. See
5553 // https://github.com/google/sanitizers/issues/321.
5554 SSIZE_T res = REAL(flistxattr)(fd, list, size);
5555 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
5556 return res;
5557}
5558#define INIT_LISTXATTR \
5559 COMMON_INTERCEPT_FUNCTION(listxattr); \
5560 COMMON_INTERCEPT_FUNCTION(llistxattr); \
5561 COMMON_INTERCEPT_FUNCTION(flistxattr);
5562#else
5563#define INIT_LISTXATTR
5564#endif
5565
5566#if SANITIZER_INTERCEPT_GETXATTR
5567INTERCEPTOR(SSIZE_T, getxattr, const char *path, const char *name, char *value,
5568 SIZE_T size) {
5569 void *ctx;
5570 COMMON_INTERCEPTOR_ENTER(ctx, getxattr, path, name, value, size);
5571 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5572 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
5573 // FIXME: under ASan the call below may write to freed memory and corrupt
5574 // its metadata. See
5575 // https://github.com/google/sanitizers/issues/321.
5576 SSIZE_T res = REAL(getxattr)(path, name, value, size);
5577 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
5578 return res;
5579}
5580INTERCEPTOR(SSIZE_T, lgetxattr, const char *path, const char *name, char *value,
5581 SIZE_T size) {
5582 void *ctx;
5583 COMMON_INTERCEPTOR_ENTER(ctx, lgetxattr, path, name, value, size);
5584 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
5585 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
5586 // FIXME: under ASan the call below may write to freed memory and corrupt
5587 // its metadata. See
5588 // https://github.com/google/sanitizers/issues/321.
5589 SSIZE_T res = REAL(lgetxattr)(path, name, value, size);
5590 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
5591 return res;
5592}
5593INTERCEPTOR(SSIZE_T, fgetxattr, int fd, const char *name, char *value,
5594 SIZE_T size) {
5595 void *ctx;
5596 COMMON_INTERCEPTOR_ENTER(ctx, fgetxattr, fd, name, value, size);
5597 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
5598 // FIXME: under ASan the call below may write to freed memory and corrupt
5599 // its metadata. See
5600 // https://github.com/google/sanitizers/issues/321.
5601 SSIZE_T res = REAL(fgetxattr)(fd, name, value, size);
5602 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
5603 return res;
5604}
5605#define INIT_GETXATTR \
5606 COMMON_INTERCEPT_FUNCTION(getxattr); \
5607 COMMON_INTERCEPT_FUNCTION(lgetxattr); \
5608 COMMON_INTERCEPT_FUNCTION(fgetxattr);
5609#else
5610#define INIT_GETXATTR
5611#endif
5612
5613#if SANITIZER_INTERCEPT_GETRESID
5614INTERCEPTOR(int, getresuid, void *ruid, void *euid, void *suid) {
5615 void *ctx;
5616 COMMON_INTERCEPTOR_ENTER(ctx, getresuid, ruid, euid, suid);
5617 // FIXME: under ASan the call below may write to freed memory and corrupt
5618 // its metadata. See
5619 // https://github.com/google/sanitizers/issues/321.
5620 int res = REAL(getresuid)(ruid, euid, suid);
5621 if (res >= 0) {
5622 if (ruid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ruid, uid_t_sz);
5623 if (euid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, euid, uid_t_sz);
5624 if (suid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, suid, uid_t_sz);
5625 }
5626 return res;
5627}
5628INTERCEPTOR(int, getresgid, void *rgid, void *egid, void *sgid) {
5629 void *ctx;
5630 COMMON_INTERCEPTOR_ENTER(ctx, getresgid, rgid, egid, sgid);
5631 // FIXME: under ASan the call below may write to freed memory and corrupt
5632 // its metadata. See
5633 // https://github.com/google/sanitizers/issues/321.
5634 int res = REAL(getresgid)(rgid, egid, sgid);
5635 if (res >= 0) {
5636 if (rgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rgid, gid_t_sz);
5637 if (egid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, egid, gid_t_sz);
5638 if (sgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sgid, gid_t_sz);
5639 }
5640 return res;
5641}
5642#define INIT_GETRESID \
5643 COMMON_INTERCEPT_FUNCTION(getresuid); \
5644 COMMON_INTERCEPT_FUNCTION(getresgid);
5645#else
5646#define INIT_GETRESID
5647#endif
5648
5649#if SANITIZER_INTERCEPT_GETIFADDRS
5650// As long as getifaddrs()/freeifaddrs() use calloc()/free(), we don't need to
5651// intercept freeifaddrs(). If that ceases to be the case, we might need to
5652// intercept it to poison the memory again.
5653INTERCEPTOR(int, getifaddrs, __sanitizer_ifaddrs **ifap) {
5654 void *ctx;
5655 COMMON_INTERCEPTOR_ENTER(ctx, getifaddrs, ifap);
5656 // FIXME: under ASan the call below may write to freed memory and corrupt
5657 // its metadata. See
5658 // https://github.com/google/sanitizers/issues/321.
5659 int res = REAL(getifaddrs)(ifap);
5660 if (res == 0 && ifap) {
5661 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifap, sizeof(void *));
5662 __sanitizer_ifaddrs *p = *ifap;
5663 while (p) {
5664 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_ifaddrs));
5665 if (p->ifa_name)
5666 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_name,
5667 internal_strlen(p->ifa_name) + 1);
5668 if (p->ifa_addr)
5669 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_addr, struct_sockaddr_sz);
5670 if (p->ifa_netmask)
5671 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_netmask, struct_sockaddr_sz);
5672 // On Linux this is a union, but the other member also points to a
5673 // struct sockaddr, so the following is sufficient.
5674 if (p->ifa_dstaddr)
5675 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_dstaddr, struct_sockaddr_sz);
5676 // FIXME(smatveev): Unpoison p->ifa_data as well.
5677 p = p->ifa_next;
5678 }
5679 }
5680 return res;
5681}
5682#define INIT_GETIFADDRS \
5683 COMMON_INTERCEPT_FUNCTION(getifaddrs);
5684#else
5685#define INIT_GETIFADDRS
5686#endif
5687
5688#if SANITIZER_INTERCEPT_IF_INDEXTONAME
5689INTERCEPTOR(char *, if_indextoname, unsigned int ifindex, char* ifname) {
5690 void *ctx;
5691 COMMON_INTERCEPTOR_ENTER(ctx, if_indextoname, ifindex, ifname);
5692 // FIXME: under ASan the call below may write to freed memory and corrupt
5693 // its metadata. See
5694 // https://github.com/google/sanitizers/issues/321.
5695 char *res = REAL(if_indextoname)(ifindex, ifname);
5696 if (res && ifname)
5697 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifname, internal_strlen(ifname) + 1);
5698 return res;
5699}
5700INTERCEPTOR(unsigned int, if_nametoindex, const char* ifname) {
5701 void *ctx;
5702 COMMON_INTERCEPTOR_ENTER(ctx, if_nametoindex, ifname);
5703 if (ifname)
5704 COMMON_INTERCEPTOR_READ_RANGE(ctx, ifname, internal_strlen(ifname) + 1);
5705 return REAL(if_nametoindex)(ifname);
5706}
5707#define INIT_IF_INDEXTONAME \
5708 COMMON_INTERCEPT_FUNCTION(if_indextoname); \
5709 COMMON_INTERCEPT_FUNCTION(if_nametoindex);
5710#else
5711#define INIT_IF_INDEXTONAME
5712#endif
5713
5714#if SANITIZER_INTERCEPT_CAPGET
5715INTERCEPTOR(int, capget, void *hdrp, void *datap) {
5716 void *ctx;
5717 COMMON_INTERCEPTOR_ENTER(ctx, capget, hdrp, datap);
5718 if (hdrp)
5719 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz);
5720 // FIXME: under ASan the call below may write to freed memory and corrupt
5721 // its metadata. See
5722 // https://github.com/google/sanitizers/issues/321.
5723 int res = REAL(capget)(hdrp, datap);
5724 if (res == 0 && datap) {
5725 unsigned datasz = __user_cap_data_struct_sz(hdrp);
5726 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datap, datasz);
5727 }
5728 // We can also return -1 and write to hdrp->version if the version passed in
5729 // hdrp->version is unsupported. But that's not a trivial condition to check,
5730 // and anyway COMMON_INTERCEPTOR_READ_RANGE protects us to some extent.
5731 return res;
5732}
5733INTERCEPTOR(int, capset, void *hdrp, const void *datap) {
5734 void *ctx;
5735 COMMON_INTERCEPTOR_ENTER(ctx, capset, hdrp, datap);
5736 if (hdrp)
5737 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz);
5738 if (datap) {
5739 unsigned datasz = __user_cap_data_struct_sz(hdrp);
5740 COMMON_INTERCEPTOR_READ_RANGE(ctx, datap, datasz);
5741 }
5742 return REAL(capset)(hdrp, datap);
5743}
5744#define INIT_CAPGET \
5745 COMMON_INTERCEPT_FUNCTION(capget); \
5746 COMMON_INTERCEPT_FUNCTION(capset);
5747#else
5748#define INIT_CAPGET
5749#endif
5750
5751#if SANITIZER_INTERCEPT_FTIME
5752INTERCEPTOR(int, ftime, __sanitizer_timeb *tp) {
5753 void *ctx;
5754 COMMON_INTERCEPTOR_ENTER(ctx, ftime, tp);
5755 // FIXME: under ASan the call below may write to freed memory and corrupt
5756 // its metadata. See
5757 // https://github.com/google/sanitizers/issues/321.
5758 int res = REAL(ftime)(tp);
5759 if (tp)
5760 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, sizeof(*tp));
5761 return res;
5762}
5763#define INIT_FTIME COMMON_INTERCEPT_FUNCTION(ftime);
5764#else
5765#define INIT_FTIME
5766#endif // SANITIZER_INTERCEPT_FTIME
5767
5768#if SANITIZER_INTERCEPT_XDR
5769INTERCEPTOR(void, xdrmem_create, __sanitizer_XDR *xdrs, uptr addr,
5770 unsigned size, int op) {
5771 void *ctx;
5772 COMMON_INTERCEPTOR_ENTER(ctx, xdrmem_create, xdrs, addr, size, op);
5773 // FIXME: under ASan the call below may write to freed memory and corrupt
5774 // its metadata. See
5775 // https://github.com/google/sanitizers/issues/321.
5776 REAL(xdrmem_create)(xdrs, addr, size, op);
5777 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs));
5778 if (op == __sanitizer_XDR_ENCODE) {
5779 // It's not obvious how much data individual xdr_ routines write.
5780 // Simply unpoison the entire target buffer in advance.
5781 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (void *)addr, size);
5782 }
5783}
5784
5785INTERCEPTOR(void, xdrstdio_create, __sanitizer_XDR *xdrs, void *file, int op) {
5786 void *ctx;
5787 COMMON_INTERCEPTOR_ENTER(ctx, xdrstdio_create, xdrs, file, op);
5788 // FIXME: under ASan the call below may write to freed memory and corrupt
5789 // its metadata. See
5790 // https://github.com/google/sanitizers/issues/321.
5791 REAL(xdrstdio_create)(xdrs, file, op);
5792 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs));
5793}
5794
5795// FIXME: under ASan the call below may write to freed memory and corrupt
5796// its metadata. See
5797// https://github.com/google/sanitizers/issues/321.
5798#define XDR_INTERCEPTOR(F, T) \
5799 INTERCEPTOR(int, F, __sanitizer_XDR *xdrs, T *p) { \
5800 void *ctx; \
5801 COMMON_INTERCEPTOR_ENTER(ctx, F, xdrs, p); \
5802 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) \
5803 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); \
5804 int res = REAL(F)(xdrs, p); \
5805 if (res && p && xdrs->x_op == __sanitizer_XDR_DECODE) \
5806 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); \
5807 return res; \
5808 }
5809
5810XDR_INTERCEPTOR(xdr_short, short)
5811XDR_INTERCEPTOR(xdr_u_short, unsigned short)
5812XDR_INTERCEPTOR(xdr_int, int)
5813XDR_INTERCEPTOR(xdr_u_int, unsigned)
5814XDR_INTERCEPTOR(xdr_long, long)
5815XDR_INTERCEPTOR(xdr_u_long, unsigned long)
5816XDR_INTERCEPTOR(xdr_hyper, long long)
5817XDR_INTERCEPTOR(xdr_u_hyper, unsigned long long)
5818XDR_INTERCEPTOR(xdr_longlong_t, long long)
5819XDR_INTERCEPTOR(xdr_u_longlong_t, unsigned long long)
5820XDR_INTERCEPTOR(xdr_int8_t, u8)
5821XDR_INTERCEPTOR(xdr_uint8_t, u8)
5822XDR_INTERCEPTOR(xdr_int16_t, u16)
5823XDR_INTERCEPTOR(xdr_uint16_t, u16)
5824XDR_INTERCEPTOR(xdr_int32_t, u32)
5825XDR_INTERCEPTOR(xdr_uint32_t, u32)
5826XDR_INTERCEPTOR(xdr_int64_t, u64)
5827XDR_INTERCEPTOR(xdr_uint64_t, u64)
5828XDR_INTERCEPTOR(xdr_quad_t, long long)
5829XDR_INTERCEPTOR(xdr_u_quad_t, unsigned long long)
5830XDR_INTERCEPTOR(xdr_bool, bool)
5831XDR_INTERCEPTOR(xdr_enum, int)
5832XDR_INTERCEPTOR(xdr_char, char)
5833XDR_INTERCEPTOR(xdr_u_char, unsigned char)
5834XDR_INTERCEPTOR(xdr_float, float)
5835XDR_INTERCEPTOR(xdr_double, double)
5836
5837// FIXME: intercept xdr_array, opaque, union, vector, reference, pointer,
5838// wrapstring, sizeof
5839
5840INTERCEPTOR(int, xdr_bytes, __sanitizer_XDR *xdrs, char **p, unsigned *sizep,
5841 unsigned maxsize) {
5842 void *ctx;
5843 COMMON_INTERCEPTOR_ENTER(ctx, xdr_bytes, xdrs, p, sizep, maxsize);
5844 if (p && sizep && xdrs->x_op == __sanitizer_XDR_ENCODE) {
5845 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p));
5846 COMMON_INTERCEPTOR_READ_RANGE(ctx, sizep, sizeof(*sizep));
5847 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, *sizep);
5848 }
5849 // FIXME: under ASan the call below may write to freed memory and corrupt
5850 // its metadata. See
5851 // https://github.com/google/sanitizers/issues/321.
5852 int res = REAL(xdr_bytes)(xdrs, p, sizep, maxsize);
5853 if (p && sizep && xdrs->x_op == __sanitizer_XDR_DECODE) {
5854 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
5855 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizep, sizeof(*sizep));
5856 if (res && *p && *sizep) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, *sizep);
5857 }
5858 return res;
5859}
5860
5861INTERCEPTOR(int, xdr_string, __sanitizer_XDR *xdrs, char **p,
5862 unsigned maxsize) {
5863 void *ctx;
5864 COMMON_INTERCEPTOR_ENTER(ctx, xdr_string, xdrs, p, maxsize);
5865 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) {
5866 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p));
5867 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, internal_strlen(*p) + 1);
5868 }
5869 // FIXME: under ASan the call below may write to freed memory and corrupt
5870 // its metadata. See
5871 // https://github.com/google/sanitizers/issues/321.
5872 int res = REAL(xdr_string)(xdrs, p, maxsize);
5873 if (p && xdrs->x_op == __sanitizer_XDR_DECODE) {
5874 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
5875 if (res && *p)
5876 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1);
5877 }
5878 return res;
5879}
5880
5881#define INIT_XDR \
5882 COMMON_INTERCEPT_FUNCTION(xdrmem_create); \
5883 COMMON_INTERCEPT_FUNCTION(xdrstdio_create); \
5884 COMMON_INTERCEPT_FUNCTION(xdr_short); \
5885 COMMON_INTERCEPT_FUNCTION(xdr_u_short); \
5886 COMMON_INTERCEPT_FUNCTION(xdr_int); \
5887 COMMON_INTERCEPT_FUNCTION(xdr_u_int); \
5888 COMMON_INTERCEPT_FUNCTION(xdr_long); \
5889 COMMON_INTERCEPT_FUNCTION(xdr_u_long); \
5890 COMMON_INTERCEPT_FUNCTION(xdr_hyper); \
5891 COMMON_INTERCEPT_FUNCTION(xdr_u_hyper); \
5892 COMMON_INTERCEPT_FUNCTION(xdr_longlong_t); \
5893 COMMON_INTERCEPT_FUNCTION(xdr_u_longlong_t); \
5894 COMMON_INTERCEPT_FUNCTION(xdr_int8_t); \
5895 COMMON_INTERCEPT_FUNCTION(xdr_uint8_t); \
5896 COMMON_INTERCEPT_FUNCTION(xdr_int16_t); \
5897 COMMON_INTERCEPT_FUNCTION(xdr_uint16_t); \
5898 COMMON_INTERCEPT_FUNCTION(xdr_int32_t); \
5899 COMMON_INTERCEPT_FUNCTION(xdr_uint32_t); \
5900 COMMON_INTERCEPT_FUNCTION(xdr_int64_t); \
5901 COMMON_INTERCEPT_FUNCTION(xdr_uint64_t); \
5902 COMMON_INTERCEPT_FUNCTION(xdr_quad_t); \
5903 COMMON_INTERCEPT_FUNCTION(xdr_u_quad_t); \
5904 COMMON_INTERCEPT_FUNCTION(xdr_bool); \
5905 COMMON_INTERCEPT_FUNCTION(xdr_enum); \
5906 COMMON_INTERCEPT_FUNCTION(xdr_char); \
5907 COMMON_INTERCEPT_FUNCTION(xdr_u_char); \
5908 COMMON_INTERCEPT_FUNCTION(xdr_float); \
5909 COMMON_INTERCEPT_FUNCTION(xdr_double); \
5910 COMMON_INTERCEPT_FUNCTION(xdr_bytes); \
5911 COMMON_INTERCEPT_FUNCTION(xdr_string);
5912#else
5913#define INIT_XDR
5914#endif // SANITIZER_INTERCEPT_XDR
5915
5916#if SANITIZER_INTERCEPT_XDRREC
5917typedef int (*xdrrec_cb)(char*, char*, int);
5918struct XdrRecWrapper {
5919 char *handle;
5920 xdrrec_cb rd, wr;
5921};
5922typedef AddrHashMap<XdrRecWrapper *, 11> XdrRecWrapMap;
5923static XdrRecWrapMap *xdrrec_wrap_map;
5924
5925static int xdrrec_wr_wrap(char *handle, char *buf, int count) {
5926 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
5927 COMMON_INTERCEPTOR_INITIALIZE_RANGE(buf, count);
5928 XdrRecWrapper *wrap = (XdrRecWrapper *)handle;
5929 return wrap->wr(wrap->handle, buf, count);
5930}
5931
5932static int xdrrec_rd_wrap(char *handle, char *buf, int count) {
5933 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
5934 XdrRecWrapper *wrap = (XdrRecWrapper *)handle;
5935 return wrap->rd(wrap->handle, buf, count);
5936}
5937
5938// This doesn't apply to the solaris version as it has a different function
5939// signature.
5940INTERCEPTOR(void, xdrrec_create, __sanitizer_XDR *xdr, unsigned sndsize,
5941 unsigned rcvsize, char *handle, int (*rd)(char*, char*, int),
5942 int (*wr)(char*, char*, int)) {
5943 void *ctx;
5944 COMMON_INTERCEPTOR_ENTER(ctx, xdrrec_create, xdr, sndsize, rcvsize,
5945 handle, rd, wr);
5946 COMMON_INTERCEPTOR_READ_RANGE(ctx, &xdr->x_op, sizeof xdr->x_op);
5947
5948 // We can't allocate a wrapper on the stack, as the handle is used outside
5949 // this stack frame. So we put it on the heap, and keep track of it with
5950 // the HashMap (keyed by x_private). When we later need to xdr_destroy,
5951 // we can index the map, free the wrapper, and then clean the map entry.
5952 XdrRecWrapper *wrap_data =
5953 (XdrRecWrapper *)InternalAlloc(size: sizeof(XdrRecWrapper));
5954 wrap_data->handle = handle;
5955 wrap_data->rd = rd;
5956 wrap_data->wr = wr;
5957 if (wr)
5958 wr = xdrrec_wr_wrap;
5959 if (rd)
5960 rd = xdrrec_rd_wrap;
5961 handle = (char *)wrap_data;
5962
5963 REAL(xdrrec_create)(xdr, sndsize, rcvsize, handle, rd, wr);
5964 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdr, sizeof *xdr);
5965
5966 XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, false, true);
5967 *wrap = wrap_data;
5968}
5969
5970// We have to intercept this to be able to free wrapper memory;
5971// otherwise it's not necessary.
5972INTERCEPTOR(void, xdr_destroy, __sanitizer_XDR *xdr) {
5973 void *ctx;
5974 COMMON_INTERCEPTOR_ENTER(ctx, xdr_destroy, xdr);
5975
5976 XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, true);
5977 InternalFree(p: *wrap);
5978 REAL(xdr_destroy)(xdr);
5979}
5980#define INIT_XDRREC_LINUX \
5981 static u64 xdrrec_wrap_mem[sizeof(XdrRecWrapMap) / sizeof(u64) + 1]; \
5982 xdrrec_wrap_map = new ((void *)&xdrrec_wrap_mem) XdrRecWrapMap(); \
5983 COMMON_INTERCEPT_FUNCTION(xdrrec_create); \
5984 COMMON_INTERCEPT_FUNCTION(xdr_destroy);
5985#else
5986#define INIT_XDRREC_LINUX
5987#endif
5988
5989#if SANITIZER_INTERCEPT_TSEARCH
5990INTERCEPTOR(void *, tsearch, void *key, void **rootp,
5991 int (*compar)(const void *, const void *)) {
5992 void *ctx;
5993 COMMON_INTERCEPTOR_ENTER(ctx, tsearch, key, rootp, compar);
5994 // FIXME: under ASan the call below may write to freed memory and corrupt
5995 // its metadata. See
5996 // https://github.com/google/sanitizers/issues/321.
5997 void *res = REAL(tsearch)(key, rootp, compar);
5998 if (res && *(void **)res == key)
5999 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(void *));
6000 return res;
6001}
6002#define INIT_TSEARCH COMMON_INTERCEPT_FUNCTION(tsearch);
6003#else
6004#define INIT_TSEARCH
6005#endif
6006
6007#if SANITIZER_INTERCEPT_LIBIO_INTERNALS || SANITIZER_INTERCEPT_FOPEN || \
6008 SANITIZER_INTERCEPT_OPEN_MEMSTREAM
6009void unpoison_file(__sanitizer_FILE *fp) {
6010#if SANITIZER_HAS_STRUCT_FILE
6011 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp, sizeof(*fp));
6012#if SANITIZER_NETBSD
6013 if (fp->_bf._base && fp->_bf._size > 0)
6014 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_bf._base,
6015 fp->_bf._size);
6016#else
6017 if (fp->_IO_read_base && fp->_IO_read_base < fp->_IO_read_end)
6018 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_read_base,
6019 fp->_IO_read_end - fp->_IO_read_base);
6020 if (fp->_IO_write_base && fp->_IO_write_base < fp->_IO_write_end)
6021 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_write_base,
6022 fp->_IO_write_end - fp->_IO_write_base);
6023#endif
6024#endif // SANITIZER_HAS_STRUCT_FILE
6025}
6026#endif
6027
6028#if SANITIZER_INTERCEPT_LIBIO_INTERNALS
6029// These guys are called when a .c source is built with -O2.
6030INTERCEPTOR(int, __uflow, __sanitizer_FILE *fp) {
6031 void *ctx;
6032 COMMON_INTERCEPTOR_ENTER(ctx, __uflow, fp);
6033 int res = REAL(__uflow)(fp);
6034 unpoison_file(fp);
6035 return res;
6036}
6037INTERCEPTOR(int, __underflow, __sanitizer_FILE *fp) {
6038 void *ctx;
6039 COMMON_INTERCEPTOR_ENTER(ctx, __underflow, fp);
6040 int res = REAL(__underflow)(fp);
6041 unpoison_file(fp);
6042 return res;
6043}
6044INTERCEPTOR(int, __overflow, __sanitizer_FILE *fp, int ch) {
6045 void *ctx;
6046 COMMON_INTERCEPTOR_ENTER(ctx, __overflow, fp, ch);
6047 int res = REAL(__overflow)(fp, ch);
6048 unpoison_file(fp);
6049 return res;
6050}
6051INTERCEPTOR(int, __wuflow, __sanitizer_FILE *fp) {
6052 void *ctx;
6053 COMMON_INTERCEPTOR_ENTER(ctx, __wuflow, fp);
6054 int res = REAL(__wuflow)(fp);
6055 unpoison_file(fp);
6056 return res;
6057}
6058INTERCEPTOR(int, __wunderflow, __sanitizer_FILE *fp) {
6059 void *ctx;
6060 COMMON_INTERCEPTOR_ENTER(ctx, __wunderflow, fp);
6061 int res = REAL(__wunderflow)(fp);
6062 unpoison_file(fp);
6063 return res;
6064}
6065INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) {
6066 void *ctx;
6067 COMMON_INTERCEPTOR_ENTER(ctx, __woverflow, fp, ch);
6068 int res = REAL(__woverflow)(fp, ch);
6069 unpoison_file(fp);
6070 return res;
6071}
6072#define INIT_LIBIO_INTERNALS \
6073 COMMON_INTERCEPT_FUNCTION(__uflow); \
6074 COMMON_INTERCEPT_FUNCTION(__underflow); \
6075 COMMON_INTERCEPT_FUNCTION(__overflow); \
6076 COMMON_INTERCEPT_FUNCTION(__wuflow); \
6077 COMMON_INTERCEPT_FUNCTION(__wunderflow); \
6078 COMMON_INTERCEPT_FUNCTION(__woverflow);
6079#else
6080#define INIT_LIBIO_INTERNALS
6081#endif
6082
6083#if SANITIZER_INTERCEPT_FOPEN
6084INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) {
6085 void *ctx;
6086 COMMON_INTERCEPTOR_ENTER(ctx, fopen, path, mode);
6087 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6088 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6089 __sanitizer_FILE *res = REAL(fopen)(path, mode);
6090 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6091 if (res) unpoison_file(fp: res);
6092 return res;
6093}
6094INTERCEPTOR(__sanitizer_FILE *, fdopen, int fd, const char *mode) {
6095 void *ctx;
6096 COMMON_INTERCEPTOR_ENTER(ctx, fdopen, fd, mode);
6097 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6098 __sanitizer_FILE *res = REAL(fdopen)(fd, mode);
6099 if (res) unpoison_file(fp: res);
6100 return res;
6101}
6102INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode,
6103 __sanitizer_FILE *fp) {
6104 void *ctx;
6105 COMMON_INTERCEPTOR_ENTER(ctx, freopen, path, mode, fp);
6106 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6107 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6108 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
6109 __sanitizer_FILE *res = REAL(freopen)(path, mode, fp);
6110 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6111 if (res) unpoison_file(fp: res);
6112 return res;
6113}
6114#define INIT_FOPEN \
6115 COMMON_INTERCEPT_FUNCTION(fopen); \
6116 COMMON_INTERCEPT_FUNCTION(fdopen); \
6117 COMMON_INTERCEPT_FUNCTION(freopen);
6118#else
6119#define INIT_FOPEN
6120#endif
6121
6122#if SANITIZER_INTERCEPT_FLOPEN
6123INTERCEPTOR(int, flopen, const char *path, int flags, ...) {
6124 void *ctx;
6125 va_list ap;
6126 va_start(ap, flags);
6127 u16 mode = static_cast<u16>(va_arg(ap, u32));
6128 va_end(ap);
6129 COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode);
6130 if (path) {
6131 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6132 }
6133 return COMMON_INTERCEPTOR_BLOCK_REAL(flopen)(path, flags, mode);
6134}
6135
6136INTERCEPTOR(int, flopenat, int dirfd, const char *path, int flags, ...) {
6137 void *ctx;
6138 va_list ap;
6139 va_start(ap, flags);
6140 u16 mode = static_cast<u16>(va_arg(ap, u32));
6141 va_end(ap);
6142 COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode);
6143 if (path) {
6144 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6145 }
6146 return COMMON_INTERCEPTOR_BLOCK_REAL(flopenat)(dirfd, path, flags, mode);
6147}
6148
6149#define INIT_FLOPEN \
6150 COMMON_INTERCEPT_FUNCTION(flopen); \
6151 COMMON_INTERCEPT_FUNCTION(flopenat);
6152#else
6153#define INIT_FLOPEN
6154#endif
6155
6156#if SANITIZER_INTERCEPT_FOPEN64
6157INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) {
6158 void *ctx;
6159 COMMON_INTERCEPTOR_ENTER(ctx, fopen64, path, mode);
6160 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6161 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6162 __sanitizer_FILE *res = REAL(fopen64)(path, mode);
6163 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6164 if (res) unpoison_file(fp: res);
6165 return res;
6166}
6167INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode,
6168 __sanitizer_FILE *fp) {
6169 void *ctx;
6170 COMMON_INTERCEPTOR_ENTER(ctx, freopen64, path, mode, fp);
6171 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
6172 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1);
6173 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
6174 __sanitizer_FILE *res = REAL(freopen64)(path, mode, fp);
6175 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
6176 if (res) unpoison_file(fp: res);
6177 return res;
6178}
6179#define INIT_FOPEN64 \
6180 COMMON_INTERCEPT_FUNCTION(fopen64); \
6181 COMMON_INTERCEPT_FUNCTION(freopen64);
6182#else
6183#define INIT_FOPEN64
6184#endif
6185
6186#if SANITIZER_INTERCEPT_OPEN_MEMSTREAM
6187INTERCEPTOR(__sanitizer_FILE *, open_memstream, char **ptr, SIZE_T *sizeloc) {
6188 void *ctx;
6189 COMMON_INTERCEPTOR_ENTER(ctx, open_memstream, ptr, sizeloc);
6190 // FIXME: under ASan the call below may write to freed memory and corrupt
6191 // its metadata. See
6192 // https://github.com/google/sanitizers/issues/321.
6193 __sanitizer_FILE *res = REAL(open_memstream)(ptr, sizeloc);
6194 if (res) {
6195 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
6196 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
6197 unpoison_file(fp: res);
6198 FileMetadata file = {.addr: ptr, .size: sizeloc};
6199 SetInterceptorMetadata(addr: res, file);
6200 }
6201 return res;
6202}
6203INTERCEPTOR(__sanitizer_FILE *, open_wmemstream, wchar_t **ptr,
6204 SIZE_T *sizeloc) {
6205 void *ctx;
6206 COMMON_INTERCEPTOR_ENTER(ctx, open_wmemstream, ptr, sizeloc);
6207 __sanitizer_FILE *res = REAL(open_wmemstream)(ptr, sizeloc);
6208 if (res) {
6209 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
6210 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
6211 unpoison_file(fp: res);
6212 FileMetadata file = {.addr: (char **)ptr, .size: sizeloc};
6213 SetInterceptorMetadata(addr: res, file);
6214 }
6215 return res;
6216}
6217INTERCEPTOR(__sanitizer_FILE *, fmemopen, void *buf, SIZE_T size,
6218 const char *mode) {
6219 void *ctx;
6220 COMMON_INTERCEPTOR_ENTER(ctx, fmemopen, buf, size, mode);
6221 // FIXME: under ASan the call below may write to freed memory and corrupt
6222 // its metadata. See
6223 // https://github.com/google/sanitizers/issues/321.
6224 __sanitizer_FILE *res = REAL(fmemopen)(buf, size, mode);
6225 if (res) unpoison_file(fp: res);
6226 return res;
6227}
6228#define INIT_OPEN_MEMSTREAM \
6229 COMMON_INTERCEPT_FUNCTION(open_memstream); \
6230 COMMON_INTERCEPT_FUNCTION(open_wmemstream); \
6231 COMMON_INTERCEPT_FUNCTION(fmemopen);
6232#else
6233#define INIT_OPEN_MEMSTREAM
6234#endif
6235
6236#if SANITIZER_INTERCEPT_OBSTACK
6237static void initialize_obstack(__sanitizer_obstack *obstack) {
6238 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack, sizeof(*obstack));
6239 if (obstack->chunk)
6240 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack->chunk,
6241 sizeof(*obstack->chunk));
6242}
6243
6244INTERCEPTOR(int, _obstack_begin_1, __sanitizer_obstack *obstack, int sz,
6245 int align, void *(*alloc_fn)(uptr arg, uptr sz),
6246 void (*free_fn)(uptr arg, void *p)) {
6247 void *ctx;
6248 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin_1, obstack, sz, align, alloc_fn,
6249 free_fn);
6250 int res = REAL(_obstack_begin_1)(obstack, sz, align, alloc_fn, free_fn);
6251 if (res) initialize_obstack(obstack);
6252 return res;
6253}
6254INTERCEPTOR(int, _obstack_begin, __sanitizer_obstack *obstack, int sz,
6255 int align, void *(*alloc_fn)(uptr sz), void (*free_fn)(void *p)) {
6256 void *ctx;
6257 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin, obstack, sz, align, alloc_fn,
6258 free_fn);
6259 int res = REAL(_obstack_begin)(obstack, sz, align, alloc_fn, free_fn);
6260 if (res) initialize_obstack(obstack);
6261 return res;
6262}
6263INTERCEPTOR(void, _obstack_newchunk, __sanitizer_obstack *obstack, int length) {
6264 void *ctx;
6265 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_newchunk, obstack, length);
6266 REAL(_obstack_newchunk)(obstack, length);
6267 if (obstack->chunk)
6268 COMMON_INTERCEPTOR_INITIALIZE_RANGE(
6269 obstack->chunk, obstack->next_free - (char *)obstack->chunk);
6270}
6271#define INIT_OBSTACK \
6272 COMMON_INTERCEPT_FUNCTION(_obstack_begin_1); \
6273 COMMON_INTERCEPT_FUNCTION(_obstack_begin); \
6274 COMMON_INTERCEPT_FUNCTION(_obstack_newchunk);
6275#else
6276#define INIT_OBSTACK
6277#endif
6278
6279#if SANITIZER_INTERCEPT_FFLUSH
6280INTERCEPTOR(int, fflush, __sanitizer_FILE *fp) {
6281 void *ctx;
6282 COMMON_INTERCEPTOR_ENTER(ctx, fflush, fp);
6283 if (fp)
6284 unpoison_file(fp);
6285 int res = REAL(fflush)(fp);
6286 // FIXME: handle fp == NULL
6287 if (fp) {
6288 const FileMetadata *m = GetInterceptorMetadata(addr: fp);
6289 if (m) COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
6290 }
6291 return res;
6292}
6293#define INIT_FFLUSH COMMON_INTERCEPT_FUNCTION(fflush);
6294#else
6295#define INIT_FFLUSH
6296#endif
6297
6298#if SANITIZER_INTERCEPT_FCLOSE
6299INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) {
6300 void *ctx;
6301 COMMON_INTERCEPTOR_ENTER(ctx, fclose, fp);
6302 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
6303 const FileMetadata *m = GetInterceptorMetadata(addr: fp);
6304 if (fp)
6305 unpoison_file(fp);
6306 int res = REAL(fclose)(fp);
6307 if (m) {
6308 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
6309 DeleteInterceptorMetadata(addr: fp);
6310 }
6311 return res;
6312}
6313#define INIT_FCLOSE COMMON_INTERCEPT_FUNCTION(fclose);
6314#else
6315#define INIT_FCLOSE
6316#endif
6317
6318#if SANITIZER_INTERCEPT_DLOPEN_DLCLOSE
6319INTERCEPTOR(void*, dlopen, const char *filename, int flag) {
6320 void *ctx;
6321 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlopen, filename, flag);
6322
6323 if (filename) {
6324 COMMON_INTERCEPTOR_READ_STRING(ctx, filename, 0);
6325
6326# if !SANITIZER_DYNAMIC
6327 // We care about a very specific use-case: dladdr on
6328 // statically-linked ASan may return <main program>
6329 // instead of the library.
6330 // We therefore only take effect if the sanitizer is statically
6331 // linked, and we don't bother canonicalizing paths because
6332 // dladdr should return the same address both times (we assume
6333 // the user did not canonicalize the result from dladdr).
6334 if (common_flags()->test_only_replace_dlopen_main_program) {
6335 VPrintf(1, "dlopen interceptor: filename: %s\n", filename);
6336
6337 const char *SelfFName = DladdrSelfFName();
6338 VPrintf(1, "dlopen interceptor: DladdrSelfFName: %p %s\n",
6339 (const void *)SelfFName, SelfFName);
6340
6341 if (SelfFName && internal_strcmp(s1: SelfFName, s2: filename) == 0) {
6342 // It's possible they copied the string from dladdr, so
6343 // we do a string comparison rather than pointer comparison.
6344 VPrintf(1, "dlopen interceptor: replacing %s because it matches %s\n",
6345 filename, SelfFName);
6346 filename = (char *)0; // RTLD_DEFAULT
6347 }
6348 }
6349# endif // !SANITIZER_DYNAMIC
6350 }
6351
6352 void *res = COMMON_INTERCEPTOR_DLOPEN(filename, flag);
6353 Symbolizer::GetOrInit()->InvalidateModuleList();
6354 COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, res);
6355 return res;
6356}
6357
6358INTERCEPTOR(int, dlclose, void *handle) {
6359 void *ctx;
6360 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlclose, handle);
6361 int res = REAL(dlclose)(handle);
6362 Symbolizer::GetOrInit()->InvalidateModuleList();
6363 COMMON_INTERCEPTOR_LIBRARY_UNLOADED();
6364 return res;
6365}
6366#define INIT_DLOPEN_DLCLOSE \
6367 COMMON_INTERCEPT_FUNCTION(dlopen); \
6368 COMMON_INTERCEPT_FUNCTION(dlclose);
6369#else
6370#define INIT_DLOPEN_DLCLOSE
6371#endif
6372
6373#if SANITIZER_INTERCEPT_GETPASS
6374INTERCEPTOR(char *, getpass, const char *prompt) {
6375 void *ctx;
6376 COMMON_INTERCEPTOR_ENTER(ctx, getpass, prompt);
6377 if (prompt)
6378 COMMON_INTERCEPTOR_READ_RANGE(ctx, prompt, internal_strlen(prompt)+1);
6379 char *res = REAL(getpass)(prompt);
6380 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res)+1);
6381 return res;
6382}
6383
6384#define INIT_GETPASS COMMON_INTERCEPT_FUNCTION(getpass);
6385#else
6386#define INIT_GETPASS
6387#endif
6388
6389#if SANITIZER_INTERCEPT_TIMERFD
6390INTERCEPTOR(int, timerfd_settime, int fd, int flags, void *new_value,
6391 void *old_value) {
6392 void *ctx;
6393 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_settime, fd, flags, new_value,
6394 old_value);
6395 COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, struct_itimerspec_sz);
6396 int res = REAL(timerfd_settime)(fd, flags, new_value, old_value);
6397 if (res != -1 && old_value)
6398 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerspec_sz);
6399 return res;
6400}
6401
6402INTERCEPTOR(int, timerfd_gettime, int fd, void *curr_value) {
6403 void *ctx;
6404 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_gettime, fd, curr_value);
6405 int res = REAL(timerfd_gettime)(fd, curr_value);
6406 if (res != -1 && curr_value)
6407 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerspec_sz);
6408 return res;
6409}
6410#define INIT_TIMERFD \
6411 COMMON_INTERCEPT_FUNCTION(timerfd_settime); \
6412 COMMON_INTERCEPT_FUNCTION(timerfd_gettime);
6413#else
6414#define INIT_TIMERFD
6415#endif
6416
6417#if SANITIZER_INTERCEPT_MLOCKX
6418// Linux kernel has a bug that leads to kernel deadlock if a process
6419// maps TBs of memory and then calls mlock().
6420static void MlockIsUnsupported() {
6421 static atomic_uint8_t printed;
6422 if (atomic_exchange(a: &printed, v: 1, mo: memory_order_relaxed))
6423 return;
6424 VPrintf(1, "%s ignores mlock/mlockall/munlock/munlockall\n",
6425 SanitizerToolName);
6426}
6427
6428INTERCEPTOR(int, mlock, const void *addr, uptr len) {
6429 MlockIsUnsupported();
6430 return 0;
6431}
6432
6433INTERCEPTOR(int, munlock, const void *addr, uptr len) {
6434 MlockIsUnsupported();
6435 return 0;
6436}
6437
6438INTERCEPTOR(int, mlockall, int flags) {
6439 MlockIsUnsupported();
6440 return 0;
6441}
6442
6443INTERCEPTOR(int, munlockall, void) {
6444 MlockIsUnsupported();
6445 return 0;
6446}
6447
6448#define INIT_MLOCKX \
6449 COMMON_INTERCEPT_FUNCTION(mlock); \
6450 COMMON_INTERCEPT_FUNCTION(munlock); \
6451 COMMON_INTERCEPT_FUNCTION(mlockall); \
6452 COMMON_INTERCEPT_FUNCTION(munlockall);
6453
6454#else
6455#define INIT_MLOCKX
6456#endif // SANITIZER_INTERCEPT_MLOCKX
6457
6458#if SANITIZER_INTERCEPT_FOPENCOOKIE
6459struct WrappedCookie {
6460 void *real_cookie;
6461 __sanitizer_cookie_io_functions_t real_io_funcs;
6462};
6463
6464static uptr wrapped_read(void *cookie, char *buf, uptr size) {
6465 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6466 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6467 __sanitizer_cookie_io_read real_read = wrapped_cookie->real_io_funcs.read;
6468 return real_read ? real_read(wrapped_cookie->real_cookie, buf, size) : 0;
6469}
6470
6471static uptr wrapped_write(void *cookie, const char *buf, uptr size) {
6472 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6473 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6474 __sanitizer_cookie_io_write real_write = wrapped_cookie->real_io_funcs.write;
6475 return real_write ? real_write(wrapped_cookie->real_cookie, buf, size) : size;
6476}
6477
6478static int wrapped_seek(void *cookie, u64 *offset, int whence) {
6479 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
6480 COMMON_INTERCEPTOR_INITIALIZE_RANGE(offset, sizeof(*offset));
6481 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6482 __sanitizer_cookie_io_seek real_seek = wrapped_cookie->real_io_funcs.seek;
6483 return real_seek ? real_seek(wrapped_cookie->real_cookie, offset, whence)
6484 : -1;
6485}
6486
6487static int wrapped_close(void *cookie) {
6488 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
6489 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie;
6490 __sanitizer_cookie_io_close real_close = wrapped_cookie->real_io_funcs.close;
6491 int res = real_close ? real_close(wrapped_cookie->real_cookie) : 0;
6492 InternalFree(p: wrapped_cookie);
6493 return res;
6494}
6495
6496INTERCEPTOR(__sanitizer_FILE *, fopencookie, void *cookie, const char *mode,
6497 __sanitizer_cookie_io_functions_t io_funcs) {
6498 void *ctx;
6499 COMMON_INTERCEPTOR_ENTER(ctx, fopencookie, cookie, mode, io_funcs);
6500 WrappedCookie *wrapped_cookie =
6501 (WrappedCookie *)InternalAlloc(size: sizeof(WrappedCookie));
6502 wrapped_cookie->real_cookie = cookie;
6503 wrapped_cookie->real_io_funcs = io_funcs;
6504 __sanitizer_FILE *res =
6505 REAL(fopencookie)(wrapped_cookie, mode, {.read: wrapped_read, .write: wrapped_write,
6506 .seek: wrapped_seek, .close: wrapped_close});
6507 return res;
6508}
6509
6510#define INIT_FOPENCOOKIE COMMON_INTERCEPT_FUNCTION(fopencookie);
6511#else
6512#define INIT_FOPENCOOKIE
6513#endif // SANITIZER_INTERCEPT_FOPENCOOKIE
6514
6515#if SANITIZER_INTERCEPT_SEM
6516INTERCEPTOR(int, sem_init, __sanitizer_sem_t *s, int pshared, unsigned value) {
6517 void *ctx;
6518 COMMON_INTERCEPTOR_ENTER(ctx, sem_init, s, pshared, value);
6519 // Workaround a bug in glibc's "old" semaphore implementation by
6520 // zero-initializing the sem_t contents. This has to be done here because
6521 // interceptors bind to the lowest version before glibc 2.36, hitting the
6522 // buggy code path while the non-sanitized build of the same code works fine.
6523 REAL(memset)(s, 0, sizeof(*s));
6524 int res = REAL(sem_init)(s, pshared, value);
6525 return res;
6526}
6527
6528INTERCEPTOR(int, sem_destroy, __sanitizer_sem_t *s) {
6529 void *ctx;
6530 COMMON_INTERCEPTOR_ENTER(ctx, sem_destroy, s);
6531 int res = REAL(sem_destroy)(s);
6532 return res;
6533}
6534
6535INTERCEPTOR(int, sem_wait, __sanitizer_sem_t *s) {
6536 void *ctx;
6537 COMMON_INTERCEPTOR_ENTER(ctx, sem_wait, s);
6538 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_wait)(s);
6539 if (res == 0) {
6540 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6541 }
6542 return res;
6543}
6544
6545INTERCEPTOR(int, sem_trywait, __sanitizer_sem_t *s) {
6546 void *ctx;
6547 COMMON_INTERCEPTOR_ENTER(ctx, sem_trywait, s);
6548 int res = REAL(sem_trywait)(s);
6549 if (res == 0) {
6550 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6551 }
6552 return res;
6553}
6554
6555INTERCEPTOR(int, sem_timedwait, __sanitizer_sem_t *s, void *abstime) {
6556 void *ctx;
6557 COMMON_INTERCEPTOR_ENTER(ctx, sem_timedwait, s, abstime);
6558 COMMON_INTERCEPTOR_READ_RANGE(ctx, abstime, struct_timespec_sz);
6559 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_timedwait)(s, abstime);
6560 if (res == 0) {
6561 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6562 }
6563 return res;
6564}
6565
6566INTERCEPTOR(int, sem_post, __sanitizer_sem_t *s) {
6567 void *ctx;
6568 COMMON_INTERCEPTOR_ENTER(ctx, sem_post, s);
6569 COMMON_INTERCEPTOR_RELEASE(ctx, (uptr)s);
6570 int res = REAL(sem_post)(s);
6571 return res;
6572}
6573
6574INTERCEPTOR(int, sem_getvalue, __sanitizer_sem_t *s, int *sval) {
6575 void *ctx;
6576 COMMON_INTERCEPTOR_ENTER(ctx, sem_getvalue, s, sval);
6577 int res = REAL(sem_getvalue)(s, sval);
6578 if (res == 0) {
6579 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s);
6580 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sval, sizeof(*sval));
6581 }
6582 return res;
6583}
6584
6585INTERCEPTOR(__sanitizer_sem_t *, sem_open, const char *name, int oflag, ...) {
6586 void *ctx;
6587 va_list ap;
6588 va_start(ap, oflag);
6589 u32 mode = va_arg(ap, u32);
6590 u32 value = va_arg(ap, u32);
6591 COMMON_INTERCEPTOR_ENTER(ctx, sem_open, name, oflag, mode, value);
6592 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
6593 __sanitizer_sem_t *s = REAL(sem_open)(name, oflag, mode, value);
6594 if (s)
6595 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, sizeof(*s));
6596 va_end(ap);
6597 return s;
6598}
6599
6600INTERCEPTOR(int, sem_unlink, const char *name) {
6601 void *ctx;
6602 COMMON_INTERCEPTOR_ENTER(ctx, sem_unlink, name);
6603 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
6604 return REAL(sem_unlink)(name);
6605}
6606
6607# define INIT_SEM \
6608 COMMON_INTERCEPT_FUNCTION(sem_init); \
6609 COMMON_INTERCEPT_FUNCTION(sem_destroy); \
6610 COMMON_INTERCEPT_FUNCTION(sem_wait); \
6611 COMMON_INTERCEPT_FUNCTION(sem_trywait); \
6612 COMMON_INTERCEPT_FUNCTION(sem_timedwait); \
6613 COMMON_INTERCEPT_FUNCTION(sem_post); \
6614 COMMON_INTERCEPT_FUNCTION(sem_getvalue); \
6615 COMMON_INTERCEPT_FUNCTION(sem_open); \
6616 COMMON_INTERCEPT_FUNCTION(sem_unlink);
6617#else
6618# define INIT_SEM
6619#endif // SANITIZER_INTERCEPT_SEM
6620
6621#if SANITIZER_INTERCEPT_PTHREAD_SETCANCEL
6622INTERCEPTOR(int, pthread_setcancelstate, int state, int *oldstate) {
6623 void *ctx;
6624 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcancelstate, state, oldstate);
6625 int res = REAL(pthread_setcancelstate)(state, oldstate);
6626 if (res == 0 && oldstate != nullptr)
6627 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldstate, sizeof(*oldstate));
6628 return res;
6629}
6630
6631INTERCEPTOR(int, pthread_setcanceltype, int type, int *oldtype) {
6632 void *ctx;
6633 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcanceltype, type, oldtype);
6634 int res = REAL(pthread_setcanceltype)(type, oldtype);
6635 if (res == 0 && oldtype != nullptr)
6636 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldtype, sizeof(*oldtype));
6637 return res;
6638}
6639#define INIT_PTHREAD_SETCANCEL \
6640 COMMON_INTERCEPT_FUNCTION(pthread_setcancelstate); \
6641 COMMON_INTERCEPT_FUNCTION(pthread_setcanceltype);
6642#else
6643#define INIT_PTHREAD_SETCANCEL
6644#endif
6645
6646#if SANITIZER_INTERCEPT_MINCORE
6647INTERCEPTOR(int, mincore, void *addr, uptr length, unsigned char *vec) {
6648 void *ctx;
6649 COMMON_INTERCEPTOR_ENTER(ctx, mincore, addr, length, vec);
6650 int res = REAL(mincore)(addr, length, vec);
6651 if (res == 0) {
6652 uptr page_size = GetPageSizeCached();
6653 uptr vec_size = ((length + page_size - 1) & (~(page_size - 1))) / page_size;
6654 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, vec, vec_size);
6655 }
6656 return res;
6657}
6658#define INIT_MINCORE COMMON_INTERCEPT_FUNCTION(mincore);
6659#else
6660#define INIT_MINCORE
6661#endif
6662
6663#if SANITIZER_INTERCEPT_PROCESS_VM_READV
6664INTERCEPTOR(SSIZE_T, process_vm_readv, int pid, __sanitizer_iovec *local_iov,
6665 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt,
6666 uptr flags) {
6667 void *ctx;
6668 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_readv, pid, local_iov, liovcnt,
6669 remote_iov, riovcnt, flags);
6670 SSIZE_T res = REAL(process_vm_readv)(pid, local_iov, liovcnt, remote_iov,
6671 riovcnt, flags);
6672 if (res > 0)
6673 write_iovec(ctx, iovec: local_iov, iovlen: liovcnt, maxlen: res);
6674 return res;
6675}
6676
6677INTERCEPTOR(SSIZE_T, process_vm_writev, int pid, __sanitizer_iovec *local_iov,
6678 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt,
6679 uptr flags) {
6680 void *ctx;
6681 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_writev, pid, local_iov, liovcnt,
6682 remote_iov, riovcnt, flags);
6683 SSIZE_T res = REAL(process_vm_writev)(pid, local_iov, liovcnt, remote_iov,
6684 riovcnt, flags);
6685 if (res > 0)
6686 read_iovec(ctx, iovec: local_iov, iovlen: liovcnt, maxlen: res);
6687 return res;
6688}
6689#define INIT_PROCESS_VM_READV \
6690 COMMON_INTERCEPT_FUNCTION(process_vm_readv); \
6691 COMMON_INTERCEPT_FUNCTION(process_vm_writev);
6692#else
6693#define INIT_PROCESS_VM_READV
6694#endif
6695
6696#if SANITIZER_INTERCEPT_CTERMID
6697INTERCEPTOR(char *, ctermid, char *s) {
6698 void *ctx;
6699 COMMON_INTERCEPTOR_ENTER(ctx, ctermid, s);
6700 char *res = REAL(ctermid)(s);
6701 if (res) {
6702 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
6703 }
6704 return res;
6705}
6706#define INIT_CTERMID COMMON_INTERCEPT_FUNCTION(ctermid);
6707#else
6708#define INIT_CTERMID
6709#endif
6710
6711#if SANITIZER_INTERCEPT_CTERMID_R
6712INTERCEPTOR(char *, ctermid_r, char *s) {
6713 void *ctx;
6714 COMMON_INTERCEPTOR_ENTER(ctx, ctermid_r, s);
6715 char *res = REAL(ctermid_r)(s);
6716 if (res) {
6717 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1);
6718 }
6719 return res;
6720}
6721#define INIT_CTERMID_R COMMON_INTERCEPT_FUNCTION(ctermid_r);
6722#else
6723#define INIT_CTERMID_R
6724#endif
6725
6726#if SANITIZER_INTERCEPT_RECV_RECVFROM
6727INTERCEPTOR(SSIZE_T, recv, int fd, void *buf, SIZE_T len, int flags) {
6728 void *ctx;
6729 COMMON_INTERCEPTOR_ENTER(ctx, recv, fd, buf, len, flags);
6730 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6731 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recv)(fd, buf, len, flags);
6732 if (res > 0) {
6733 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len));
6734 }
6735 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
6736 return res;
6737}
6738
6739INTERCEPTOR(SSIZE_T, recvfrom, int fd, void *buf, SIZE_T len, int flags,
6740 void *srcaddr, int *addrlen) {
6741 void *ctx;
6742 COMMON_INTERCEPTOR_ENTER(ctx, recvfrom, fd, buf, len, flags, srcaddr,
6743 addrlen);
6744 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6745 SIZE_T srcaddr_sz;
6746 if (srcaddr) srcaddr_sz = *addrlen;
6747 (void)srcaddr_sz; // prevent "set but not used" warning
6748 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recvfrom)(fd, buf, len, flags,
6749 srcaddr, addrlen);
6750 if (res > 0)
6751 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len));
6752 if (res >= 0 && srcaddr)
6753 COMMON_INTERCEPTOR_INITIALIZE_RANGE(srcaddr,
6754 Min((SIZE_T)*addrlen, srcaddr_sz));
6755 return res;
6756}
6757#define INIT_RECV_RECVFROM \
6758 COMMON_INTERCEPT_FUNCTION(recv); \
6759 COMMON_INTERCEPT_FUNCTION(recvfrom);
6760#else
6761#define INIT_RECV_RECVFROM
6762#endif
6763
6764#if SANITIZER_INTERCEPT_SEND_SENDTO
6765INTERCEPTOR(SSIZE_T, send, int fd, void *buf, SIZE_T len, int flags) {
6766 void *ctx;
6767 COMMON_INTERCEPTOR_ENTER(ctx, send, fd, buf, len, flags);
6768 if (fd >= 0) {
6769 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6770 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
6771 }
6772 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(send)(fd, buf, len, flags);
6773 if (common_flags()->intercept_send && res > 0)
6774 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len));
6775 return res;
6776}
6777
6778INTERCEPTOR(SSIZE_T, sendto, int fd, void *buf, SIZE_T len, int flags,
6779 void *dstaddr, int addrlen) {
6780 void *ctx;
6781 COMMON_INTERCEPTOR_ENTER(ctx, sendto, fd, buf, len, flags, dstaddr, addrlen);
6782 if (fd >= 0) {
6783 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6784 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
6785 }
6786 // Can't check dstaddr as it may have uninitialized padding at the end.
6787 SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(sendto)(fd, buf, len, flags,
6788 dstaddr, addrlen);
6789 if (common_flags()->intercept_send && res > 0)
6790 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len));
6791 return res;
6792}
6793#define INIT_SEND_SENDTO \
6794 COMMON_INTERCEPT_FUNCTION(send); \
6795 COMMON_INTERCEPT_FUNCTION(sendto);
6796#else
6797#define INIT_SEND_SENDTO
6798#endif
6799
6800#if SANITIZER_INTERCEPT_EVENTFD_READ_WRITE
6801INTERCEPTOR(int, eventfd_read, int fd, __sanitizer_eventfd_t *value) {
6802 void *ctx;
6803 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_read, fd, value);
6804 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6805 int res = COMMON_INTERCEPTOR_BLOCK_REAL(eventfd_read)(fd, value);
6806 if (res == 0) {
6807 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, sizeof(*value));
6808 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
6809 }
6810 return res;
6811}
6812INTERCEPTOR(int, eventfd_write, int fd, __sanitizer_eventfd_t value) {
6813 void *ctx;
6814 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_write, fd, value);
6815 if (fd >= 0) {
6816 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
6817 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
6818 }
6819 int res = COMMON_INTERCEPTOR_BLOCK_REAL(eventfd_write)(fd, value);
6820 return res;
6821}
6822#define INIT_EVENTFD_READ_WRITE \
6823 COMMON_INTERCEPT_FUNCTION(eventfd_read); \
6824 COMMON_INTERCEPT_FUNCTION(eventfd_write)
6825#else
6826#define INIT_EVENTFD_READ_WRITE
6827#endif
6828
6829#if SANITIZER_INTERCEPT_STAT
6830INTERCEPTOR(int, stat, const char *path, void *buf) {
6831 void *ctx;
6832 COMMON_INTERCEPTOR_ENTER(ctx, stat, path, buf);
6833 if (common_flags()->intercept_stat)
6834 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6835 int res = REAL(stat)(path, buf);
6836 if (!res)
6837 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
6838 return res;
6839}
6840#define INIT_STAT COMMON_INTERCEPT_FUNCTION(stat)
6841#else
6842#define INIT_STAT
6843#endif
6844
6845#if SANITIZER_INTERCEPT_STAT64
6846INTERCEPTOR(int, stat64, const char *path, void *buf) {
6847 void *ctx;
6848 COMMON_INTERCEPTOR_ENTER(ctx, stat64, path, buf);
6849 if (common_flags()->intercept_stat)
6850 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6851 int res = REAL(stat64)(path, buf);
6852 if (!res)
6853 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
6854 return res;
6855}
6856#define INIT_STAT64 COMMON_INTERCEPT_FUNCTION(stat64)
6857#else
6858#define INIT_STAT64
6859#endif
6860
6861
6862#if SANITIZER_INTERCEPT_LSTAT
6863INTERCEPTOR(int, lstat, const char *path, void *buf) {
6864 void *ctx;
6865 COMMON_INTERCEPTOR_ENTER(ctx, lstat, path, buf);
6866 if (common_flags()->intercept_stat)
6867 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6868 int res = REAL(lstat)(path, buf);
6869 if (!res)
6870 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
6871 return res;
6872}
6873#define INIT_LSTAT COMMON_INTERCEPT_FUNCTION(lstat)
6874#else
6875#define INIT_LSTAT
6876#endif
6877
6878#if SANITIZER_INTERCEPT_STAT64
6879INTERCEPTOR(int, lstat64, const char *path, void *buf) {
6880 void *ctx;
6881 COMMON_INTERCEPTOR_ENTER(ctx, lstat64, path, buf);
6882 if (common_flags()->intercept_stat)
6883 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6884 int res = REAL(lstat64)(path, buf);
6885 if (!res)
6886 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
6887 return res;
6888}
6889#define INIT_LSTAT64 COMMON_INTERCEPT_FUNCTION(lstat64)
6890#else
6891#define INIT_LSTAT64
6892#endif
6893
6894#if SANITIZER_INTERCEPT___XSTAT
6895INTERCEPTOR(int, __xstat, int version, const char *path, void *buf) {
6896 void *ctx;
6897 COMMON_INTERCEPTOR_ENTER(ctx, __xstat, version, path, buf);
6898 if (common_flags()->intercept_stat)
6899 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6900 int res = REAL(__xstat)(version, path, buf);
6901 if (!res)
6902 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
6903 return res;
6904}
6905#define INIT___XSTAT COMMON_INTERCEPT_FUNCTION(__xstat)
6906#else
6907#define INIT___XSTAT
6908#endif
6909
6910#if SANITIZER_INTERCEPT___XSTAT64
6911INTERCEPTOR(int, __xstat64, int version, const char *path, void *buf) {
6912 void *ctx;
6913 COMMON_INTERCEPTOR_ENTER(ctx, __xstat64, version, path, buf);
6914 if (common_flags()->intercept_stat)
6915 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6916 int res = REAL(__xstat64)(version, path, buf);
6917 if (!res)
6918 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
6919 return res;
6920}
6921#define INIT___XSTAT64 COMMON_INTERCEPT_FUNCTION(__xstat64)
6922#else
6923#define INIT___XSTAT64
6924#endif
6925
6926#if SANITIZER_INTERCEPT___LXSTAT
6927INTERCEPTOR(int, __lxstat, int version, const char *path, void *buf) {
6928 void *ctx;
6929 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat, version, path, buf);
6930 if (common_flags()->intercept_stat)
6931 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6932 int res = REAL(__lxstat)(version, path, buf);
6933 if (!res)
6934 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz);
6935 return res;
6936}
6937#define INIT___LXSTAT COMMON_INTERCEPT_FUNCTION(__lxstat)
6938#else
6939#define INIT___LXSTAT
6940#endif
6941
6942#if SANITIZER_INTERCEPT___LXSTAT64
6943INTERCEPTOR(int, __lxstat64, int version, const char *path, void *buf) {
6944 void *ctx;
6945 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat64, version, path, buf);
6946 if (common_flags()->intercept_stat)
6947 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
6948 int res = REAL(__lxstat64)(version, path, buf);
6949 if (!res)
6950 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz);
6951 return res;
6952}
6953#define INIT___LXSTAT64 COMMON_INTERCEPT_FUNCTION(__lxstat64)
6954#else
6955#define INIT___LXSTAT64
6956#endif
6957
6958// FIXME: add other *stat interceptor
6959
6960#if SANITIZER_INTERCEPT_UTMP
6961INTERCEPTOR(void *, getutent, int dummy) {
6962 void *ctx;
6963 COMMON_INTERCEPTOR_ENTER(ctx, getutent, dummy);
6964 void *res = REAL(getutent)(dummy);
6965 if (res)
6966 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz);
6967 return res;
6968}
6969INTERCEPTOR(void *, getutid, void *ut) {
6970 void *ctx;
6971 COMMON_INTERCEPTOR_ENTER(ctx, getutid, ut);
6972 void *res = REAL(getutid)(ut);
6973 if (res)
6974 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz);
6975 return res;
6976}
6977INTERCEPTOR(void *, getutline, void *ut) {
6978 void *ctx;
6979 COMMON_INTERCEPTOR_ENTER(ctx, getutline, ut);
6980 void *res = REAL(getutline)(ut);
6981 if (res)
6982 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz);
6983 return res;
6984}
6985#define INIT_UTMP \
6986 COMMON_INTERCEPT_FUNCTION(getutent); \
6987 COMMON_INTERCEPT_FUNCTION(getutid); \
6988 COMMON_INTERCEPT_FUNCTION(getutline);
6989#else
6990#define INIT_UTMP
6991#endif
6992
6993#if SANITIZER_INTERCEPT_UTMPX
6994INTERCEPTOR(void *, getutxent, int dummy) {
6995 void *ctx;
6996 COMMON_INTERCEPTOR_ENTER(ctx, getutxent, dummy);
6997 void *res = REAL(getutxent)(dummy);
6998 if (res)
6999 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz);
7000 return res;
7001}
7002INTERCEPTOR(void *, getutxid, void *ut) {
7003 void *ctx;
7004 COMMON_INTERCEPTOR_ENTER(ctx, getutxid, ut);
7005 void *res = REAL(getutxid)(ut);
7006 if (res)
7007 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz);
7008 return res;
7009}
7010INTERCEPTOR(void *, getutxline, void *ut) {
7011 void *ctx;
7012 COMMON_INTERCEPTOR_ENTER(ctx, getutxline, ut);
7013 void *res = REAL(getutxline)(ut);
7014 if (res)
7015 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz);
7016 return res;
7017}
7018INTERCEPTOR(void *, pututxline, const void *ut) {
7019 void *ctx;
7020 COMMON_INTERCEPTOR_ENTER(ctx, pututxline, ut);
7021 if (ut)
7022 COMMON_INTERCEPTOR_READ_RANGE(ctx, ut, __sanitizer::struct_utmpx_sz);
7023 void *res = REAL(pututxline)(ut);
7024 if (res)
7025 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_utmpx_sz);
7026 return res;
7027}
7028#define INIT_UTMPX \
7029 COMMON_INTERCEPT_FUNCTION(getutxent); \
7030 COMMON_INTERCEPT_FUNCTION(getutxid); \
7031 COMMON_INTERCEPT_FUNCTION(getutxline); \
7032 COMMON_INTERCEPT_FUNCTION(pututxline);
7033#else
7034#define INIT_UTMPX
7035#endif
7036
7037#if SANITIZER_INTERCEPT_GETLOADAVG
7038INTERCEPTOR(int, getloadavg, double *loadavg, int nelem) {
7039 void *ctx;
7040 COMMON_INTERCEPTOR_ENTER(ctx, getloadavg, loadavg, nelem);
7041 int res = REAL(getloadavg)(loadavg, nelem);
7042 if (res > 0)
7043 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, loadavg, res * sizeof(*loadavg));
7044 return res;
7045}
7046#define INIT_GETLOADAVG \
7047 COMMON_INTERCEPT_FUNCTION(getloadavg);
7048#else
7049#define INIT_GETLOADAVG
7050#endif
7051
7052#if SANITIZER_INTERCEPT_MCHECK_MPROBE
7053INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) {
7054 return 0;
7055}
7056
7057INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) {
7058 return 0;
7059}
7060
7061INTERCEPTOR(int, mprobe, void *ptr) {
7062 return 0;
7063}
7064#endif
7065
7066#if SANITIZER_INTERCEPT_WCSLEN
7067INTERCEPTOR(SIZE_T, wcslen, const wchar_t *s) {
7068 void *ctx;
7069 COMMON_INTERCEPTOR_ENTER(ctx, wcslen, s);
7070 SIZE_T res = REAL(wcslen)(s);
7071 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (res + 1));
7072 return res;
7073}
7074
7075INTERCEPTOR(SIZE_T, wcsnlen, const wchar_t *s, SIZE_T n) {
7076 void *ctx;
7077 COMMON_INTERCEPTOR_ENTER(ctx, wcsnlen, s, n);
7078 SIZE_T res = REAL(wcsnlen)(s, n);
7079 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * Min(res + 1, n));
7080 return res;
7081}
7082#define INIT_WCSLEN \
7083 COMMON_INTERCEPT_FUNCTION(wcslen); \
7084 COMMON_INTERCEPT_FUNCTION(wcsnlen);
7085#else
7086#define INIT_WCSLEN
7087#endif
7088
7089#if SANITIZER_INTERCEPT_WCSCAT
7090INTERCEPTOR(wchar_t *, wcscat, wchar_t *dst, const wchar_t *src) {
7091 void *ctx;
7092 COMMON_INTERCEPTOR_ENTER(ctx, wcscat, dst, src);
7093 SIZE_T src_size = internal_wcslen(s: src);
7094 SIZE_T dst_size = internal_wcslen(s: dst);
7095 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, (src_size + 1) * sizeof(wchar_t));
7096 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t));
7097 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size,
7098 (src_size + 1) * sizeof(wchar_t));
7099 return REAL(wcscat)(dst, src);
7100}
7101
7102INTERCEPTOR(wchar_t *, wcsncat, wchar_t *dst, const wchar_t *src, SIZE_T n) {
7103 void *ctx;
7104 COMMON_INTERCEPTOR_ENTER(ctx, wcsncat, dst, src, n);
7105 SIZE_T src_size = internal_wcsnlen(s: src, maxlen: n);
7106 SIZE_T dst_size = internal_wcslen(s: dst);
7107 COMMON_INTERCEPTOR_READ_RANGE(ctx, src,
7108 Min(src_size + 1, n) * sizeof(wchar_t));
7109 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t));
7110 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size,
7111 (src_size + 1) * sizeof(wchar_t));
7112 return REAL(wcsncat)(dst, src, n);
7113}
7114#define INIT_WCSCAT \
7115 COMMON_INTERCEPT_FUNCTION(wcscat); \
7116 COMMON_INTERCEPT_FUNCTION(wcsncat);
7117#else
7118#define INIT_WCSCAT
7119#endif
7120
7121#if SANITIZER_INTERCEPT_WCSDUP
7122INTERCEPTOR(wchar_t *, wcsdup, wchar_t *s) {
7123 void *ctx;
7124 COMMON_INTERCEPTOR_ENTER(ctx, wcsdup, s);
7125 SIZE_T len = internal_wcslen(s);
7126 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (len + 1));
7127 wchar_t *result = REAL(wcsdup)(s);
7128 if (result)
7129 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(wchar_t) * (len + 1));
7130 return result;
7131}
7132
7133#define INIT_WCSDUP COMMON_INTERCEPT_FUNCTION(wcsdup);
7134#else
7135#define INIT_WCSDUP
7136#endif
7137
7138#if SANITIZER_INTERCEPT_STRXFRM
7139static SIZE_T RealStrLen(const char *str) { return internal_strlen(s: str); }
7140
7141static SIZE_T RealStrLen(const wchar_t *str) { return internal_wcslen(s: str); }
7142
7143#define STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len, ...) \
7144 { \
7145 void *ctx; \
7146 COMMON_INTERCEPTOR_ENTER(ctx, strxfrm, dest, src, len, ##__VA_ARGS__); \
7147 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, \
7148 sizeof(*src) * (RealStrLen(src) + 1)); \
7149 SIZE_T res = REAL(strxfrm)(dest, src, len, ##__VA_ARGS__); \
7150 if (res < len) \
7151 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, sizeof(*src) * (res + 1)); \
7152 return res; \
7153 }
7154
7155INTERCEPTOR(SIZE_T, strxfrm, char *dest, const char *src, SIZE_T len) {
7156 STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len);
7157}
7158
7159INTERCEPTOR(SIZE_T, strxfrm_l, char *dest, const char *src, SIZE_T len,
7160 void *locale) {
7161 STRXFRM_INTERCEPTOR_IMPL(strxfrm_l, dest, src, len, locale);
7162}
7163
7164#define INIT_STRXFRM \
7165 COMMON_INTERCEPT_FUNCTION(strxfrm); \
7166 COMMON_INTERCEPT_FUNCTION(strxfrm_l);
7167#else
7168#define INIT_STRXFRM
7169#endif
7170
7171#if SANITIZER_INTERCEPT___STRXFRM_L
7172INTERCEPTOR(SIZE_T, __strxfrm_l, char *dest, const char *src, SIZE_T len,
7173 void *locale) {
7174 STRXFRM_INTERCEPTOR_IMPL(__strxfrm_l, dest, src, len, locale);
7175}
7176
7177#define INIT___STRXFRM_L COMMON_INTERCEPT_FUNCTION(__strxfrm_l);
7178#else
7179#define INIT___STRXFRM_L
7180#endif
7181
7182#if SANITIZER_INTERCEPT_WCSXFRM
7183INTERCEPTOR(SIZE_T, wcsxfrm, wchar_t *dest, const wchar_t *src, SIZE_T len) {
7184 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm, dest, src, len);
7185}
7186
7187INTERCEPTOR(SIZE_T, wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len,
7188 void *locale) {
7189 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm_l, dest, src, len, locale);
7190}
7191
7192#define INIT_WCSXFRM \
7193 COMMON_INTERCEPT_FUNCTION(wcsxfrm); \
7194 COMMON_INTERCEPT_FUNCTION(wcsxfrm_l);
7195#else
7196#define INIT_WCSXFRM
7197#endif
7198
7199#if SANITIZER_INTERCEPT___WCSXFRM_L
7200INTERCEPTOR(SIZE_T, __wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len,
7201 void *locale) {
7202 STRXFRM_INTERCEPTOR_IMPL(__wcsxfrm_l, dest, src, len, locale);
7203}
7204
7205#define INIT___WCSXFRM_L COMMON_INTERCEPT_FUNCTION(__wcsxfrm_l);
7206#else
7207#define INIT___WCSXFRM_L
7208#endif
7209
7210#if SANITIZER_INTERCEPT_ACCT
7211INTERCEPTOR(int, acct, const char *file) {
7212 void *ctx;
7213 COMMON_INTERCEPTOR_ENTER(ctx, acct, file);
7214 if (file)
7215 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1);
7216 return REAL(acct)(file);
7217}
7218#define INIT_ACCT COMMON_INTERCEPT_FUNCTION(acct)
7219#else
7220#define INIT_ACCT
7221#endif
7222
7223#if SANITIZER_INTERCEPT_USER_FROM_UID
7224INTERCEPTOR(const char *, user_from_uid, u32 uid, int nouser) {
7225 void *ctx;
7226 const char *user;
7227 COMMON_INTERCEPTOR_ENTER(ctx, user_from_uid, uid, nouser);
7228 user = REAL(user_from_uid)(uid, nouser);
7229 if (user)
7230 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, user, internal_strlen(user) + 1);
7231 return user;
7232}
7233#define INIT_USER_FROM_UID COMMON_INTERCEPT_FUNCTION(user_from_uid)
7234#else
7235#define INIT_USER_FROM_UID
7236#endif
7237
7238#if SANITIZER_INTERCEPT_UID_FROM_USER
7239INTERCEPTOR(int, uid_from_user, const char *name, u32 *uid) {
7240 void *ctx;
7241 int res;
7242 COMMON_INTERCEPTOR_ENTER(ctx, uid_from_user, name, uid);
7243 if (name)
7244 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7245 res = REAL(uid_from_user)(name, uid);
7246 if (uid)
7247 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, uid, sizeof(*uid));
7248 return res;
7249}
7250#define INIT_UID_FROM_USER COMMON_INTERCEPT_FUNCTION(uid_from_user)
7251#else
7252#define INIT_UID_FROM_USER
7253#endif
7254
7255#if SANITIZER_INTERCEPT_GROUP_FROM_GID
7256INTERCEPTOR(const char *, group_from_gid, u32 gid, int nogroup) {
7257 void *ctx;
7258 const char *group;
7259 COMMON_INTERCEPTOR_ENTER(ctx, group_from_gid, gid, nogroup);
7260 group = REAL(group_from_gid)(gid, nogroup);
7261 if (group)
7262 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, group, internal_strlen(group) + 1);
7263 return group;
7264}
7265#define INIT_GROUP_FROM_GID COMMON_INTERCEPT_FUNCTION(group_from_gid)
7266#else
7267#define INIT_GROUP_FROM_GID
7268#endif
7269
7270#if SANITIZER_INTERCEPT_GID_FROM_GROUP
7271INTERCEPTOR(int, gid_from_group, const char *group, u32 *gid) {
7272 void *ctx;
7273 int res;
7274 COMMON_INTERCEPTOR_ENTER(ctx, gid_from_group, group, gid);
7275 if (group)
7276 COMMON_INTERCEPTOR_READ_RANGE(ctx, group, internal_strlen(group) + 1);
7277 res = REAL(gid_from_group)(group, gid);
7278 if (gid)
7279 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, gid, sizeof(*gid));
7280 return res;
7281}
7282#define INIT_GID_FROM_GROUP COMMON_INTERCEPT_FUNCTION(gid_from_group)
7283#else
7284#define INIT_GID_FROM_GROUP
7285#endif
7286
7287#if SANITIZER_INTERCEPT_ACCESS
7288INTERCEPTOR(int, access, const char *path, int mode) {
7289 void *ctx;
7290 COMMON_INTERCEPTOR_ENTER(ctx, access, path, mode);
7291 if (path)
7292 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7293 return REAL(access)(path, mode);
7294}
7295#define INIT_ACCESS COMMON_INTERCEPT_FUNCTION(access)
7296#else
7297#define INIT_ACCESS
7298#endif
7299
7300#if SANITIZER_INTERCEPT_FACCESSAT
7301INTERCEPTOR(int, faccessat, int fd, const char *path, int mode, int flags) {
7302 void *ctx;
7303 COMMON_INTERCEPTOR_ENTER(ctx, faccessat, fd, path, mode, flags);
7304 if (path)
7305 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7306 return REAL(faccessat)(fd, path, mode, flags);
7307}
7308#define INIT_FACCESSAT COMMON_INTERCEPT_FUNCTION(faccessat)
7309#else
7310#define INIT_FACCESSAT
7311#endif
7312
7313#if SANITIZER_INTERCEPT_GETGROUPLIST
7314INTERCEPTOR(int, getgrouplist, const char *name, u32 basegid, u32 *groups,
7315 int *ngroups) {
7316 void *ctx;
7317 int res;
7318 COMMON_INTERCEPTOR_ENTER(ctx, getgrouplist, name, basegid, groups, ngroups);
7319 if (name)
7320 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7321 if (ngroups)
7322 COMMON_INTERCEPTOR_READ_RANGE(ctx, ngroups, sizeof(*ngroups));
7323 res = REAL(getgrouplist)(name, basegid, groups, ngroups);
7324 if (!res && groups && ngroups) {
7325 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups));
7326 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups));
7327 }
7328 return res;
7329}
7330
7331#define INIT_GETGROUPLIST COMMON_INTERCEPT_FUNCTION(getgrouplist);
7332#else
7333#define INIT_GETGROUPLIST
7334#endif
7335
7336#if SANITIZER_INTERCEPT_GETGROUPMEMBERSHIP
7337INTERCEPTOR(int, getgroupmembership, const char *name, u32 basegid, u32 *groups,
7338 int maxgrp, int *ngroups) {
7339 void *ctx;
7340 int res;
7341 COMMON_INTERCEPTOR_ENTER(ctx, getgroupmembership, name, basegid, groups,
7342 maxgrp, ngroups);
7343 if (name)
7344 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7345 res = REAL(getgroupmembership)(name, basegid, groups, maxgrp, ngroups);
7346 if (!res && groups && ngroups) {
7347 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups));
7348 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups));
7349 }
7350 return res;
7351}
7352
7353#define INIT_GETGROUPMEMBERSHIP COMMON_INTERCEPT_FUNCTION(getgroupmembership);
7354#else
7355#define INIT_GETGROUPMEMBERSHIP
7356#endif
7357
7358#if SANITIZER_INTERCEPT_READLINK
7359INTERCEPTOR(SSIZE_T, readlink, const char *path, char *buf, SIZE_T bufsiz) {
7360 void* ctx;
7361 COMMON_INTERCEPTOR_ENTER(ctx, readlink, path, buf, bufsiz);
7362 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7363 SSIZE_T res = REAL(readlink)(path, buf, bufsiz);
7364 if (res > 0)
7365 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res);
7366 return res;
7367}
7368
7369#define INIT_READLINK COMMON_INTERCEPT_FUNCTION(readlink)
7370#else
7371#define INIT_READLINK
7372#endif
7373
7374#if SANITIZER_INTERCEPT_READLINKAT
7375INTERCEPTOR(SSIZE_T, readlinkat, int dirfd, const char *path, char *buf,
7376 SIZE_T bufsiz) {
7377 void* ctx;
7378 COMMON_INTERCEPTOR_ENTER(ctx, readlinkat, dirfd, path, buf, bufsiz);
7379 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7380 SSIZE_T res = REAL(readlinkat)(dirfd, path, buf, bufsiz);
7381 if (res > 0)
7382 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res);
7383 return res;
7384}
7385
7386#define INIT_READLINKAT COMMON_INTERCEPT_FUNCTION(readlinkat)
7387#else
7388#define INIT_READLINKAT
7389#endif
7390
7391#if SANITIZER_INTERCEPT_NAME_TO_HANDLE_AT
7392INTERCEPTOR(int, name_to_handle_at, int dirfd, const char *pathname,
7393 struct file_handle *handle, int *mount_id, int flags) {
7394 void* ctx;
7395 COMMON_INTERCEPTOR_ENTER(ctx, name_to_handle_at, dirfd, pathname, handle,
7396 mount_id, flags);
7397 COMMON_INTERCEPTOR_READ_RANGE(ctx, pathname, internal_strlen(pathname) + 1);
7398
7399 __sanitizer_file_handle *sanitizer_handle =
7400 reinterpret_cast<__sanitizer_file_handle*>(handle);
7401 COMMON_INTERCEPTOR_READ_RANGE(
7402 ctx, &sanitizer_handle->handle_bytes,
7403 sizeof(sanitizer_handle->handle_bytes));
7404
7405 int res = REAL(name_to_handle_at)(dirfd, pathname, handle, mount_id, flags);
7406 if (!res) {
7407 COMMON_INTERCEPTOR_WRITE_RANGE(
7408 ctx, &sanitizer_handle->handle_bytes,
7409 sizeof(sanitizer_handle->handle_bytes));
7410 COMMON_INTERCEPTOR_WRITE_RANGE(
7411 ctx, &sanitizer_handle->handle_type,
7412 sizeof(sanitizer_handle->handle_type));
7413 COMMON_INTERCEPTOR_WRITE_RANGE(
7414 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes);
7415 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mount_id, sizeof(*mount_id));
7416 }
7417 return res;
7418}
7419
7420#define INIT_NAME_TO_HANDLE_AT COMMON_INTERCEPT_FUNCTION(name_to_handle_at)
7421#else
7422#define INIT_NAME_TO_HANDLE_AT
7423#endif
7424
7425#if SANITIZER_INTERCEPT_OPEN_BY_HANDLE_AT
7426INTERCEPTOR(int, open_by_handle_at, int mount_fd, struct file_handle* handle,
7427 int flags) {
7428 void* ctx;
7429 COMMON_INTERCEPTOR_ENTER(ctx, open_by_handle_at, mount_fd, handle, flags);
7430
7431 __sanitizer_file_handle *sanitizer_handle =
7432 reinterpret_cast<__sanitizer_file_handle*>(handle);
7433 COMMON_INTERCEPTOR_READ_RANGE(
7434 ctx, &sanitizer_handle->handle_bytes,
7435 sizeof(sanitizer_handle->handle_bytes));
7436 COMMON_INTERCEPTOR_READ_RANGE(
7437 ctx, &sanitizer_handle->handle_type,
7438 sizeof(sanitizer_handle->handle_type));
7439 COMMON_INTERCEPTOR_READ_RANGE(
7440 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes);
7441
7442 return COMMON_INTERCEPTOR_BLOCK_REAL(open_by_handle_at)(mount_fd, handle,
7443 flags);
7444}
7445
7446#define INIT_OPEN_BY_HANDLE_AT COMMON_INTERCEPT_FUNCTION(open_by_handle_at)
7447#else
7448#define INIT_OPEN_BY_HANDLE_AT
7449#endif
7450
7451#if SANITIZER_INTERCEPT_STRLCPY
7452INTERCEPTOR(SIZE_T, strlcpy, char *dst, char *src, SIZE_T size) {
7453 void *ctx;
7454 SIZE_T res;
7455 COMMON_INTERCEPTOR_ENTER(ctx, strlcpy, dst, src, size);
7456 if (src) {
7457 // Keep strnlen as macro argument, as macro may ignore it.
7458 COMMON_INTERCEPTOR_READ_STRING(
7459 ctx, src, Min(internal_strnlen(src, size), size - 1) + 1);
7460 }
7461 res = REAL(strlcpy)(dst, src, size);
7462 COMMON_INTERCEPTOR_COPY_STRING(ctx, dst, src, internal_strlen(dst) + 1);
7463 return res;
7464}
7465
7466INTERCEPTOR(SIZE_T, strlcat, char *dst, char *src, SIZE_T size) {
7467 void *ctx;
7468 SIZE_T len = 0;
7469 COMMON_INTERCEPTOR_ENTER(ctx, strlcat, dst, src, size);
7470 // src is checked in the strlcpy() interceptor
7471 if (dst) {
7472 len = internal_strnlen(dst, size);
7473 COMMON_INTERCEPTOR_READ_STRING(ctx, dst, Min(len, size - 1) + 1);
7474 }
7475 // Reuse the rest of the code in the strlcpy() interceptor
7476 return WRAP(strlcpy)(dst + len, src, size - len) + len;
7477}
7478#define INIT_STRLCPY \
7479 COMMON_INTERCEPT_FUNCTION(strlcpy); \
7480 COMMON_INTERCEPT_FUNCTION(strlcat);
7481#else
7482#define INIT_STRLCPY
7483#endif
7484
7485#if SANITIZER_INTERCEPT_MMAP
7486INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags, int fd,
7487 OFF_T off) {
7488 void *ctx;
7489 if (common_flags()->detect_write_exec)
7490 ReportMmapWriteExec(prot, mflags: flags);
7491 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7492 return (void *)internal_mmap(addr, length: sz, prot, flags, fd, offset: off);
7493 COMMON_INTERCEPTOR_ENTER(ctx, mmap, addr, sz, prot, flags, fd, off);
7494 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, off);
7495}
7496
7497INTERCEPTOR(int, munmap, void *addr, SIZE_T sz) {
7498 void *ctx;
7499 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7500 return (int)internal_munmap(addr, length: sz);
7501 COMMON_INTERCEPTOR_ENTER(ctx, munmap, addr, sz);
7502 COMMON_INTERCEPTOR_MUNMAP_IMPL(ctx, addr, sz);
7503}
7504
7505INTERCEPTOR(int, mprotect, void *addr, SIZE_T sz, int prot) {
7506 void *ctx;
7507 if (common_flags()->detect_write_exec)
7508 ReportMmapWriteExec(prot, mflags: 0);
7509 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7510 return (int)internal_mprotect(addr, length: sz, prot);
7511 COMMON_INTERCEPTOR_ENTER(ctx, mprotect, addr, sz, prot);
7512 MprotectMallocZones(addr, prot);
7513 return REAL(mprotect)(addr, sz, prot);
7514}
7515#define INIT_MMAP \
7516 COMMON_INTERCEPT_FUNCTION(mmap); \
7517 COMMON_INTERCEPT_FUNCTION(munmap); \
7518 COMMON_INTERCEPT_FUNCTION(mprotect);
7519#else
7520#define INIT_MMAP
7521#endif
7522
7523#if SANITIZER_INTERCEPT_MMAP64
7524INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags, int fd,
7525 OFF64_T off) {
7526 void *ctx;
7527 if (common_flags()->detect_write_exec)
7528 ReportMmapWriteExec(prot, mflags: flags);
7529 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
7530 return (void *)internal_mmap(addr, length: sz, prot, flags, fd, offset: off);
7531 COMMON_INTERCEPTOR_ENTER(ctx, mmap64, addr, sz, prot, flags, fd, off);
7532 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap64, addr, sz, prot, flags, fd, off);
7533}
7534#define INIT_MMAP64 COMMON_INTERCEPT_FUNCTION(mmap64);
7535#else
7536#define INIT_MMAP64
7537#endif
7538
7539#if SANITIZER_INTERCEPT_DEVNAME
7540INTERCEPTOR(char *, devname, u64 dev, u32 type) {
7541 void *ctx;
7542 char *name;
7543 COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type);
7544 name = REAL(devname)(dev, type);
7545 if (name)
7546 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
7547 return name;
7548}
7549#define INIT_DEVNAME COMMON_INTERCEPT_FUNCTION(devname);
7550#else
7551#define INIT_DEVNAME
7552#endif
7553
7554#if SANITIZER_INTERCEPT_DEVNAME_R
7555#if SANITIZER_NETBSD
7556#define DEVNAME_R_RETTYPE int
7557#define DEVNAME_R_SUCCESS(x) (!(x))
7558#else
7559#define DEVNAME_R_RETTYPE char*
7560#define DEVNAME_R_SUCCESS(x) (x)
7561#endif
7562INTERCEPTOR(DEVNAME_R_RETTYPE, devname_r, u64 dev, u32 type, char *path,
7563 uptr len) {
7564 void *ctx;
7565 COMMON_INTERCEPTOR_ENTER(ctx, devname_r, dev, type, path, len);
7566 DEVNAME_R_RETTYPE res = REAL(devname_r)(dev, type, path, len);
7567 if (DEVNAME_R_SUCCESS(res))
7568 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, path, internal_strlen(path) + 1);
7569 return res;
7570}
7571#define INIT_DEVNAME_R COMMON_INTERCEPT_FUNCTION(devname_r);
7572#else
7573#define INIT_DEVNAME_R
7574#endif
7575
7576#if SANITIZER_INTERCEPT_FGETLN
7577INTERCEPTOR(char *, fgetln, __sanitizer_FILE *stream, SIZE_T *len) {
7578 void *ctx;
7579 COMMON_INTERCEPTOR_ENTER(ctx, fgetln, stream, len);
7580 char *str = REAL(fgetln)(stream, len);
7581 if (str && len) {
7582 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
7583 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, *len);
7584 }
7585 return str;
7586}
7587#define INIT_FGETLN COMMON_INTERCEPT_FUNCTION(fgetln)
7588#else
7589#define INIT_FGETLN
7590#endif
7591
7592#if SANITIZER_INTERCEPT_STRMODE
7593INTERCEPTOR(void, strmode, u32 mode, char *bp) {
7594 void *ctx;
7595 COMMON_INTERCEPTOR_ENTER(ctx, strmode, mode, bp);
7596 REAL(strmode)(mode, bp);
7597 if (bp)
7598 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, bp, internal_strlen(bp) + 1);
7599}
7600#define INIT_STRMODE COMMON_INTERCEPT_FUNCTION(strmode)
7601#else
7602#define INIT_STRMODE
7603#endif
7604
7605#if SANITIZER_INTERCEPT_TTYENT
7606INTERCEPTOR(struct __sanitizer_ttyent *, getttyent, void) {
7607 void *ctx;
7608 COMMON_INTERCEPTOR_ENTER(ctx, getttyent);
7609 struct __sanitizer_ttyent *ttyent = REAL(getttyent)();
7610 if (ttyent)
7611 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz);
7612 return ttyent;
7613}
7614INTERCEPTOR(struct __sanitizer_ttyent *, getttynam, char *name) {
7615 void *ctx;
7616 COMMON_INTERCEPTOR_ENTER(ctx, getttynam, name);
7617 if (name)
7618 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7619 struct __sanitizer_ttyent *ttyent = REAL(getttynam)(name);
7620 if (ttyent)
7621 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz);
7622 return ttyent;
7623}
7624#define INIT_TTYENT \
7625 COMMON_INTERCEPT_FUNCTION(getttyent); \
7626 COMMON_INTERCEPT_FUNCTION(getttynam);
7627#else
7628#define INIT_TTYENT
7629#endif
7630
7631#if SANITIZER_INTERCEPT_TTYENTPATH
7632INTERCEPTOR(int, setttyentpath, char *path) {
7633 void *ctx;
7634 COMMON_INTERCEPTOR_ENTER(ctx, setttyentpath, path);
7635 if (path)
7636 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
7637 return REAL(setttyentpath)(path);
7638}
7639#define INIT_TTYENTPATH COMMON_INTERCEPT_FUNCTION(setttyentpath);
7640#else
7641#define INIT_TTYENTPATH
7642#endif
7643
7644#if SANITIZER_INTERCEPT_PROTOENT
7645static void write_protoent(void *ctx, struct __sanitizer_protoent *p) {
7646 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
7647
7648 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_name, internal_strlen(p->p_name) + 1);
7649
7650 SIZE_T pp_size = 1; // One handles the trailing \0
7651
7652 for (char **pp = p->p_aliases; *pp; ++pp, ++pp_size)
7653 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *pp, internal_strlen(*pp) + 1);
7654
7655 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_aliases, pp_size * sizeof(char *));
7656}
7657
7658INTERCEPTOR(struct __sanitizer_protoent *, getprotoent,) {
7659 void *ctx;
7660 COMMON_INTERCEPTOR_ENTER(ctx, getprotoent,);
7661 struct __sanitizer_protoent *p = REAL(getprotoent)();
7662 if (p)
7663 write_protoent(ctx, p);
7664 return p;
7665}
7666
7667INTERCEPTOR(struct __sanitizer_protoent *, getprotobyname, const char *name) {
7668 void *ctx;
7669 COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname, name);
7670 if (name)
7671 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7672 struct __sanitizer_protoent *p = REAL(getprotobyname)(name);
7673 if (p)
7674 write_protoent(ctx, p);
7675 return p;
7676}
7677
7678INTERCEPTOR(struct __sanitizer_protoent *, getprotobynumber, int proto) {
7679 void *ctx;
7680 COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber, proto);
7681 struct __sanitizer_protoent *p = REAL(getprotobynumber)(proto);
7682 if (p)
7683 write_protoent(ctx, p);
7684 return p;
7685}
7686#define INIT_PROTOENT \
7687 COMMON_INTERCEPT_FUNCTION(getprotoent); \
7688 COMMON_INTERCEPT_FUNCTION(getprotobyname); \
7689 COMMON_INTERCEPT_FUNCTION(getprotobynumber)
7690#else
7691#define INIT_PROTOENT
7692#endif
7693
7694#if SANITIZER_INTERCEPT_PROTOENT_R
7695INTERCEPTOR(int, getprotoent_r, struct __sanitizer_protoent *result_buf,
7696 char *buf, SIZE_T buflen, struct __sanitizer_protoent **result) {
7697 void *ctx;
7698 COMMON_INTERCEPTOR_ENTER(ctx, getprotoent_r, result_buf, buf, buflen,
7699 result);
7700 int res = REAL(getprotoent_r)(result_buf, buf, buflen, result);
7701
7702 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result);
7703 if (!res && *result)
7704 write_protoent(ctx, p: *result);
7705 return res;
7706}
7707
7708INTERCEPTOR(int, getprotobyname_r, const char *name,
7709 struct __sanitizer_protoent *result_buf, char *buf, SIZE_T buflen,
7710 struct __sanitizer_protoent **result) {
7711 void *ctx;
7712 COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname_r, name, result_buf, buf,
7713 buflen, result);
7714 if (name)
7715 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7716 int res = REAL(getprotobyname_r)(name, result_buf, buf, buflen, result);
7717
7718 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result);
7719 if (!res && *result)
7720 write_protoent(ctx, p: *result);
7721 return res;
7722}
7723
7724INTERCEPTOR(int, getprotobynumber_r, int num,
7725 struct __sanitizer_protoent *result_buf, char *buf,
7726 SIZE_T buflen, struct __sanitizer_protoent **result) {
7727 void *ctx;
7728 COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber_r, num, result_buf, buf,
7729 buflen, result);
7730 int res = REAL(getprotobynumber_r)(num, result_buf, buf, buflen, result);
7731
7732 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result);
7733 if (!res && *result)
7734 write_protoent(ctx, p: *result);
7735 return res;
7736}
7737
7738#define INIT_PROTOENT_R \
7739 COMMON_INTERCEPT_FUNCTION(getprotoent_r); \
7740 COMMON_INTERCEPT_FUNCTION(getprotobyname_r); \
7741 COMMON_INTERCEPT_FUNCTION(getprotobynumber_r);
7742#else
7743#define INIT_PROTOENT_R
7744#endif
7745
7746#if SANITIZER_INTERCEPT_NETENT
7747INTERCEPTOR(struct __sanitizer_netent *, getnetent,) {
7748 void *ctx;
7749 COMMON_INTERCEPTOR_ENTER(ctx, getnetent,);
7750 struct __sanitizer_netent *n = REAL(getnetent)();
7751 if (n) {
7752 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
7753
7754 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1);
7755
7756 SIZE_T nn_size = 1; // One handles the trailing \0
7757
7758 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size)
7759 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1);
7760
7761 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *));
7762 }
7763 return n;
7764}
7765
7766INTERCEPTOR(struct __sanitizer_netent *, getnetbyname, const char *name) {
7767 void *ctx;
7768 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyname, name);
7769 if (name)
7770 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
7771 struct __sanitizer_netent *n = REAL(getnetbyname)(name);
7772 if (n) {
7773 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
7774
7775 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1);
7776
7777 SIZE_T nn_size = 1; // One handles the trailing \0
7778
7779 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size)
7780 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1);
7781
7782 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *));
7783 }
7784 return n;
7785}
7786
7787INTERCEPTOR(struct __sanitizer_netent *, getnetbyaddr, u32 net, int type) {
7788 void *ctx;
7789 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyaddr, net, type);
7790 struct __sanitizer_netent *n = REAL(getnetbyaddr)(net, type);
7791 if (n) {
7792 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
7793
7794 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1);
7795
7796 SIZE_T nn_size = 1; // One handles the trailing \0
7797
7798 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size)
7799 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1);
7800
7801 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *));
7802 }
7803 return n;
7804}
7805#define INIT_NETENT \
7806 COMMON_INTERCEPT_FUNCTION(getnetent); \
7807 COMMON_INTERCEPT_FUNCTION(getnetbyname); \
7808 COMMON_INTERCEPT_FUNCTION(getnetbyaddr)
7809#else
7810#define INIT_NETENT
7811#endif
7812
7813#if SANITIZER_INTERCEPT_GETMNTINFO
7814INTERCEPTOR(int, getmntinfo, void **mntbufp, int flags) {
7815 void *ctx;
7816 COMMON_INTERCEPTOR_ENTER(ctx, getmntinfo, mntbufp, flags);
7817 int cnt = REAL(getmntinfo)(mntbufp, flags);
7818 if (cnt > 0 && mntbufp) {
7819 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mntbufp, sizeof(void *));
7820 if (*mntbufp)
7821#if SANITIZER_NETBSD
7822 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statvfs_sz);
7823#else
7824 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statfs_sz);
7825#endif
7826 }
7827 return cnt;
7828}
7829#define INIT_GETMNTINFO COMMON_INTERCEPT_FUNCTION(getmntinfo)
7830#else
7831#define INIT_GETMNTINFO
7832#endif
7833
7834#if SANITIZER_INTERCEPT_MI_VECTOR_HASH
7835INTERCEPTOR(void, mi_vector_hash, const void *key, SIZE_T len, u32 seed,
7836 u32 hashes[3]) {
7837 void *ctx;
7838 COMMON_INTERCEPTOR_ENTER(ctx, mi_vector_hash, key, len, seed, hashes);
7839 if (key)
7840 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, len);
7841 REAL(mi_vector_hash)(key, len, seed, hashes);
7842 if (hashes)
7843 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hashes, sizeof(hashes[0]) * 3);
7844}
7845#define INIT_MI_VECTOR_HASH COMMON_INTERCEPT_FUNCTION(mi_vector_hash)
7846#else
7847#define INIT_MI_VECTOR_HASH
7848#endif
7849
7850#if SANITIZER_INTERCEPT_SETVBUF
7851INTERCEPTOR(int, setvbuf, __sanitizer_FILE *stream, char *buf, int mode,
7852 SIZE_T size) {
7853 void *ctx;
7854 COMMON_INTERCEPTOR_ENTER(ctx, setvbuf, stream, buf, mode, size);
7855 int ret = REAL(setvbuf)(stream, buf, mode, size);
7856 if (buf)
7857 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size);
7858 if (stream)
7859 unpoison_file(fp: stream);
7860 return ret;
7861}
7862
7863INTERCEPTOR(void, setbuf, __sanitizer_FILE *stream, char *buf) {
7864 void *ctx;
7865 COMMON_INTERCEPTOR_ENTER(ctx, setbuf, stream, buf);
7866 REAL(setbuf)(stream, buf);
7867 if (buf) {
7868 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer_bufsiz);
7869 }
7870 if (stream)
7871 unpoison_file(fp: stream);
7872}
7873
7874INTERCEPTOR(void, setbuffer, __sanitizer_FILE *stream, char *buf, SIZE_T size) {
7875 void *ctx;
7876 COMMON_INTERCEPTOR_ENTER(ctx, setbuffer, stream, buf, size);
7877 REAL(setbuffer)(stream, buf, size);
7878 if (buf) {
7879 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size);
7880 }
7881 if (stream)
7882 unpoison_file(fp: stream);
7883}
7884
7885INTERCEPTOR(void, setlinebuf, __sanitizer_FILE *stream) {
7886 void *ctx;
7887 COMMON_INTERCEPTOR_ENTER(ctx, setlinebuf, stream);
7888 REAL(setlinebuf)(stream);
7889 if (stream)
7890 unpoison_file(fp: stream);
7891}
7892#define INIT_SETVBUF COMMON_INTERCEPT_FUNCTION(setvbuf); \
7893 COMMON_INTERCEPT_FUNCTION(setbuf); \
7894 COMMON_INTERCEPT_FUNCTION(setbuffer); \
7895 COMMON_INTERCEPT_FUNCTION(setlinebuf)
7896#else
7897#define INIT_SETVBUF
7898#endif
7899
7900#if SANITIZER_INTERCEPT_GETVFSSTAT
7901INTERCEPTOR(int, getvfsstat, void *buf, SIZE_T bufsize, int flags) {
7902 void *ctx;
7903 COMMON_INTERCEPTOR_ENTER(ctx, getvfsstat, buf, bufsize, flags);
7904 int ret = REAL(getvfsstat)(buf, bufsize, flags);
7905 if (buf && ret > 0)
7906 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, ret * struct_statvfs_sz);
7907 return ret;
7908}
7909#define INIT_GETVFSSTAT COMMON_INTERCEPT_FUNCTION(getvfsstat)
7910#else
7911#define INIT_GETVFSSTAT
7912#endif
7913
7914#if SANITIZER_INTERCEPT_REGEX
7915INTERCEPTOR(int, regcomp, void *preg, const char *pattern, int cflags) {
7916 void *ctx;
7917 COMMON_INTERCEPTOR_ENTER(ctx, regcomp, preg, pattern, cflags);
7918 if (pattern)
7919 COMMON_INTERCEPTOR_READ_RANGE(ctx, pattern, internal_strlen(pattern) + 1);
7920 int res = REAL(regcomp)(preg, pattern, cflags);
7921 if (preg)
7922 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, preg, struct_regex_sz);
7923 return res;
7924}
7925INTERCEPTOR(int, regexec, const void *preg, const char *string, SIZE_T nmatch,
7926 struct __sanitizer_regmatch *pmatch[], int eflags) {
7927 void *ctx;
7928 COMMON_INTERCEPTOR_ENTER(ctx, regexec, preg, string, nmatch, pmatch, eflags);
7929 if (preg)
7930 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz);
7931 if (string)
7932 COMMON_INTERCEPTOR_READ_RANGE(ctx, string, internal_strlen(string) + 1);
7933 int res = REAL(regexec)(preg, string, nmatch, pmatch, eflags);
7934 if (!res && pmatch)
7935 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pmatch, nmatch * struct_regmatch_sz);
7936 return res;
7937}
7938INTERCEPTOR(SIZE_T, regerror, int errcode, const void *preg, char *errbuf,
7939 SIZE_T errbuf_size) {
7940 void *ctx;
7941 COMMON_INTERCEPTOR_ENTER(ctx, regerror, errcode, preg, errbuf, errbuf_size);
7942 if (preg)
7943 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz);
7944 SIZE_T res = REAL(regerror)(errcode, preg, errbuf, errbuf_size);
7945 if (errbuf)
7946 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errbuf, internal_strlen(errbuf) + 1);
7947 return res;
7948}
7949INTERCEPTOR(void, regfree, const void *preg) {
7950 void *ctx;
7951 COMMON_INTERCEPTOR_ENTER(ctx, regfree, preg);
7952 if (preg)
7953 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz);
7954 REAL(regfree)(preg);
7955}
7956#define INIT_REGEX \
7957 COMMON_INTERCEPT_FUNCTION(regcomp); \
7958 COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(regexec, "GLIBC_2.3.4"); \
7959 COMMON_INTERCEPT_FUNCTION(regerror); \
7960 COMMON_INTERCEPT_FUNCTION(regfree);
7961#else
7962#define INIT_REGEX
7963#endif
7964
7965#if SANITIZER_INTERCEPT_REGEXSUB
7966INTERCEPTOR(SSIZE_T, regnsub, char *buf, SIZE_T bufsiz, const char *sub,
7967 const struct __sanitizer_regmatch *rm, const char *str) {
7968 void *ctx;
7969 COMMON_INTERCEPTOR_ENTER(ctx, regnsub, buf, bufsiz, sub, rm, str);
7970 if (sub)
7971 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1);
7972 // The implementation demands and hardcodes 10 elements
7973 if (rm)
7974 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz);
7975 if (str)
7976 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1);
7977 SSIZE_T res = REAL(regnsub)(buf, bufsiz, sub, rm, str);
7978 if (res > 0 && buf)
7979 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1);
7980 return res;
7981}
7982INTERCEPTOR(SSIZE_T, regasub, char **buf, const char *sub,
7983 const struct __sanitizer_regmatch *rm, const char *sstr) {
7984 void *ctx;
7985 COMMON_INTERCEPTOR_ENTER(ctx, regasub, buf, sub, rm, sstr);
7986 if (sub)
7987 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1);
7988 // Hardcode 10 elements as this is hardcoded size
7989 if (rm)
7990 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz);
7991 if (sstr)
7992 COMMON_INTERCEPTOR_READ_RANGE(ctx, sstr, internal_strlen(sstr) + 1);
7993 SSIZE_T res = REAL(regasub)(buf, sub, rm, sstr);
7994 if (res > 0 && buf) {
7995 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sizeof(char *));
7996 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *buf, internal_strlen(*buf) + 1);
7997 }
7998 return res;
7999}
8000
8001#define INIT_REGEXSUB \
8002 COMMON_INTERCEPT_FUNCTION(regnsub); \
8003 COMMON_INTERCEPT_FUNCTION(regasub);
8004#else
8005#define INIT_REGEXSUB
8006#endif
8007
8008#if SANITIZER_INTERCEPT_FTS
8009INTERCEPTOR(void *, fts_open, char *const *path_argv, int options,
8010 int (*compar)(void **, void **)) {
8011 void *ctx;
8012 COMMON_INTERCEPTOR_ENTER(ctx, fts_open, path_argv, options, compar);
8013 if (path_argv) {
8014 for (char *const *pa = path_argv; ; ++pa) {
8015 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **));
8016 if (!*pa)
8017 break;
8018 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1);
8019 }
8020 }
8021 // TODO(kamil): handle compar callback
8022 void *fts = REAL(fts_open)(path_argv, options, compar);
8023 if (fts)
8024 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, fts, struct_FTS_sz);
8025 return fts;
8026}
8027
8028INTERCEPTOR(void *, fts_read, void *ftsp) {
8029 void *ctx;
8030 COMMON_INTERCEPTOR_ENTER(ctx, fts_read, ftsp);
8031 if (ftsp)
8032 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8033 void *ftsent = REAL(fts_read)(ftsp);
8034 if (ftsent)
8035 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz);
8036 return ftsent;
8037}
8038
8039INTERCEPTOR(void *, fts_children, void *ftsp, int options) {
8040 void *ctx;
8041 COMMON_INTERCEPTOR_ENTER(ctx, fts_children, ftsp, options);
8042 if (ftsp)
8043 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8044 void *ftsent = REAL(fts_children)(ftsp, options);
8045 if (ftsent)
8046 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz);
8047 return ftsent;
8048}
8049
8050INTERCEPTOR(int, fts_set, void *ftsp, void *f, int options) {
8051 void *ctx;
8052 COMMON_INTERCEPTOR_ENTER(ctx, fts_set, ftsp, f, options);
8053 if (ftsp)
8054 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8055 if (f)
8056 COMMON_INTERCEPTOR_READ_RANGE(ctx, f, struct_FTSENT_sz);
8057 return REAL(fts_set)(ftsp, f, options);
8058}
8059
8060INTERCEPTOR(int, fts_close, void *ftsp) {
8061 void *ctx;
8062 COMMON_INTERCEPTOR_ENTER(ctx, fts_close, ftsp);
8063 if (ftsp)
8064 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz);
8065 return REAL(fts_close)(ftsp);
8066}
8067#define INIT_FTS \
8068 COMMON_INTERCEPT_FUNCTION(fts_open); \
8069 COMMON_INTERCEPT_FUNCTION(fts_read); \
8070 COMMON_INTERCEPT_FUNCTION(fts_children); \
8071 COMMON_INTERCEPT_FUNCTION(fts_set); \
8072 COMMON_INTERCEPT_FUNCTION(fts_close);
8073#else
8074#define INIT_FTS
8075#endif
8076
8077#if SANITIZER_INTERCEPT_SYSCTL
8078INTERCEPTOR(int, sysctl, int *name, unsigned int namelen, void *oldp,
8079 SIZE_T *oldlenp, void *newp, SIZE_T newlen) {
8080 void *ctx;
8081 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
8082 return internal_sysctl(name, namelen, oldp, oldlenp, newp, newlen);
8083 COMMON_INTERCEPTOR_ENTER(ctx, sysctl, name, namelen, oldp, oldlenp, newp,
8084 newlen);
8085 if (name)
8086 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, namelen * sizeof(*name));
8087 if (oldlenp)
8088 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8089 if (newp && newlen)
8090 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen);
8091 int res = REAL(sysctl)(name, namelen, oldp, oldlenp, newp, newlen);
8092 if (!res) {
8093 if (oldlenp) {
8094 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8095 if (oldp)
8096 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp);
8097 }
8098 }
8099 return res;
8100}
8101
8102INTERCEPTOR(int, sysctlbyname, char *sname, void *oldp, SIZE_T *oldlenp,
8103 void *newp, SIZE_T newlen) {
8104 void *ctx;
8105 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
8106 return internal_sysctlbyname(sname, oldp, oldlenp, newp, newlen);
8107 COMMON_INTERCEPTOR_ENTER(ctx, sysctlbyname, sname, oldp, oldlenp, newp,
8108 newlen);
8109 if (sname)
8110 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8111 if (oldlenp)
8112 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8113 if (newp && newlen)
8114 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen);
8115 int res = REAL(sysctlbyname)(sname, oldp, oldlenp, newp, newlen);
8116 if (!res) {
8117 if (oldlenp) {
8118 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp));
8119 if (oldp)
8120 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp);
8121 }
8122 }
8123 return res;
8124}
8125
8126INTERCEPTOR(int, sysctlnametomib, const char *sname, int *name,
8127 SIZE_T *namelenp) {
8128 void *ctx;
8129 COMMON_INTERCEPTOR_ENTER(ctx, sysctlnametomib, sname, name, namelenp);
8130 if (sname)
8131 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8132 if (namelenp)
8133 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp));
8134 int res = REAL(sysctlnametomib)(sname, name, namelenp);
8135 if (!res) {
8136 if (namelenp) {
8137 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp));
8138 if (name)
8139 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name));
8140 }
8141 }
8142 return res;
8143}
8144
8145#define INIT_SYSCTL \
8146 COMMON_INTERCEPT_FUNCTION(sysctl); \
8147 COMMON_INTERCEPT_FUNCTION(sysctlbyname); \
8148 COMMON_INTERCEPT_FUNCTION(sysctlnametomib);
8149#else
8150#define INIT_SYSCTL
8151#endif
8152
8153#if SANITIZER_INTERCEPT_ASYSCTL
8154INTERCEPTOR(void *, asysctl, const int *name, SIZE_T namelen, SIZE_T *len) {
8155 void *ctx;
8156 COMMON_INTERCEPTOR_ENTER(ctx, asysctl, name, namelen, len);
8157 if (name)
8158 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, sizeof(*name) * namelen);
8159 void *res = REAL(asysctl)(name, namelen, len);
8160 if (res && len) {
8161 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
8162 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len);
8163 }
8164 return res;
8165}
8166
8167INTERCEPTOR(void *, asysctlbyname, const char *sname, SIZE_T *len) {
8168 void *ctx;
8169 COMMON_INTERCEPTOR_ENTER(ctx, asysctlbyname, sname, len);
8170 if (sname)
8171 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8172 void *res = REAL(asysctlbyname)(sname, len);
8173 if (res && len) {
8174 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
8175 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len);
8176 }
8177 return res;
8178}
8179#define INIT_ASYSCTL \
8180 COMMON_INTERCEPT_FUNCTION(asysctl); \
8181 COMMON_INTERCEPT_FUNCTION(asysctlbyname);
8182#else
8183#define INIT_ASYSCTL
8184#endif
8185
8186#if SANITIZER_INTERCEPT_SYSCTLGETMIBINFO
8187INTERCEPTOR(int, sysctlgetmibinfo, char *sname, int *name,
8188 unsigned int *namelenp, char *cname, SIZE_T *csz, void **rnode,
8189 int v) {
8190 void *ctx;
8191 COMMON_INTERCEPTOR_ENTER(ctx, sysctlgetmibinfo, sname, name, namelenp, cname,
8192 csz, rnode, v);
8193 if (sname)
8194 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1);
8195 if (namelenp)
8196 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp));
8197 if (csz)
8198 COMMON_INTERCEPTOR_READ_RANGE(ctx, csz, sizeof(*csz));
8199 // Skip rnode, it's rarely used and not trivial to sanitize
8200 // It's also used mostly internally
8201 int res = REAL(sysctlgetmibinfo)(sname, name, namelenp, cname, csz, rnode, v);
8202 if (!res) {
8203 if (namelenp) {
8204 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp));
8205 if (name)
8206 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name));
8207 }
8208 if (csz) {
8209 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, csz, sizeof(*csz));
8210 if (cname)
8211 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cname, *csz);
8212 }
8213 }
8214 return res;
8215}
8216#define INIT_SYSCTLGETMIBINFO \
8217 COMMON_INTERCEPT_FUNCTION(sysctlgetmibinfo);
8218#else
8219#define INIT_SYSCTLGETMIBINFO
8220#endif
8221
8222#if SANITIZER_INTERCEPT_NL_LANGINFO
8223INTERCEPTOR(char *, nl_langinfo, long item) {
8224 void *ctx;
8225 COMMON_INTERCEPTOR_ENTER(ctx, nl_langinfo, item);
8226 char *ret = REAL(nl_langinfo)(item);
8227 if (ret)
8228 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1);
8229 return ret;
8230}
8231#define INIT_NL_LANGINFO COMMON_INTERCEPT_FUNCTION(nl_langinfo)
8232#else
8233#define INIT_NL_LANGINFO
8234#endif
8235
8236#if SANITIZER_INTERCEPT_MODCTL
8237INTERCEPTOR(int, modctl, int operation, void *argp) {
8238 void *ctx;
8239 int ret;
8240 COMMON_INTERCEPTOR_ENTER(ctx, modctl, operation, argp);
8241
8242 if (operation == modctl_load) {
8243 if (argp) {
8244 __sanitizer_modctl_load_t *ml = (__sanitizer_modctl_load_t *)argp;
8245 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml, sizeof(*ml));
8246 if (ml->ml_filename)
8247 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_filename,
8248 internal_strlen(ml->ml_filename) + 1);
8249 if (ml->ml_props)
8250 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_props, ml->ml_propslen);
8251 }
8252 ret = REAL(modctl)(operation, argp);
8253 } else if (operation == modctl_unload) {
8254 if (argp) {
8255 const char *name = (const char *)argp;
8256 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1);
8257 }
8258 ret = REAL(modctl)(operation, argp);
8259 } else if (operation == modctl_stat) {
8260 uptr iov_len;
8261 struct __sanitizer_iovec *iov = (struct __sanitizer_iovec *)argp;
8262 if (iov) {
8263 COMMON_INTERCEPTOR_READ_RANGE(ctx, iov, sizeof(*iov));
8264 iov_len = iov->iov_len;
8265 }
8266 ret = REAL(modctl)(operation, argp);
8267 if (iov)
8268 COMMON_INTERCEPTOR_WRITE_RANGE(
8269 ctx, iov->iov_base, Min(iov_len, iov->iov_len));
8270 } else if (operation == modctl_exists) {
8271 ret = REAL(modctl)(operation, argp);
8272 } else {
8273 ret = REAL(modctl)(operation, argp);
8274 }
8275
8276 return ret;
8277}
8278#define INIT_MODCTL COMMON_INTERCEPT_FUNCTION(modctl)
8279#else
8280#define INIT_MODCTL
8281#endif
8282
8283#if SANITIZER_INTERCEPT_STRTONUM
8284INTERCEPTOR(long long, strtonum, const char *nptr, long long minval,
8285 long long maxval, const char **errstr) {
8286 void *ctx;
8287 COMMON_INTERCEPTOR_ENTER(ctx, strtonum, nptr, minval, maxval, errstr);
8288
8289 // TODO(kamil): Implement strtoll as a common inteceptor
8290 char *real_endptr;
8291 long long ret = (long long)REAL(strtoimax)(nptr, &real_endptr, 10);
8292 StrtolFixAndCheck(ctx, nptr, nullptr, real_endptr, 10);
8293
8294 ret = REAL(strtonum)(nptr, minval, maxval, errstr);
8295 if (errstr) {
8296 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errstr, sizeof(const char *));
8297 if (*errstr)
8298 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *errstr, internal_strlen(*errstr) + 1);
8299 }
8300 return ret;
8301}
8302#define INIT_STRTONUM COMMON_INTERCEPT_FUNCTION(strtonum)
8303#else
8304#define INIT_STRTONUM
8305#endif
8306
8307#if SANITIZER_INTERCEPT_FPARSELN
8308INTERCEPTOR(char *, fparseln, __sanitizer_FILE *stream, SIZE_T *len,
8309 SIZE_T *lineno, const char delim[3], int flags) {
8310 void *ctx;
8311 COMMON_INTERCEPTOR_ENTER(ctx, fparseln, stream, len, lineno, delim, flags);
8312 if (lineno)
8313 COMMON_INTERCEPTOR_READ_RANGE(ctx, lineno, sizeof(*lineno));
8314 if (delim)
8315 COMMON_INTERCEPTOR_READ_RANGE(ctx, delim, sizeof(delim[0]) * 3);
8316 char *ret = REAL(fparseln)(stream, len, lineno, delim, flags);
8317 if (ret) {
8318 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1);
8319 if (len)
8320 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len));
8321 if (lineno)
8322 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineno, sizeof(*lineno));
8323 }
8324 return ret;
8325}
8326#define INIT_FPARSELN COMMON_INTERCEPT_FUNCTION(fparseln)
8327#else
8328#define INIT_FPARSELN
8329#endif
8330
8331#if SANITIZER_INTERCEPT_STATVFS1
8332INTERCEPTOR(int, statvfs1, const char *path, void *buf, int flags) {
8333 void *ctx;
8334 COMMON_INTERCEPTOR_ENTER(ctx, statvfs1, path, buf, flags);
8335 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
8336 int res = REAL(statvfs1)(path, buf, flags);
8337 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
8338 return res;
8339}
8340INTERCEPTOR(int, fstatvfs1, int fd, void *buf, int flags) {
8341 void *ctx;
8342 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs1, fd, buf, flags);
8343 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
8344 int res = REAL(fstatvfs1)(fd, buf, flags);
8345 if (!res) {
8346 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
8347 if (fd >= 0)
8348 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
8349 }
8350 return res;
8351}
8352#define INIT_STATVFS1 \
8353 COMMON_INTERCEPT_FUNCTION(statvfs1); \
8354 COMMON_INTERCEPT_FUNCTION(fstatvfs1);
8355#else
8356#define INIT_STATVFS1
8357#endif
8358
8359#if SANITIZER_INTERCEPT_STRTOI
8360INTERCEPTOR(INTMAX_T, strtoi, const char *nptr, char **endptr, int base,
8361 INTMAX_T low, INTMAX_T high, int *rstatus) {
8362 void *ctx;
8363 COMMON_INTERCEPTOR_ENTER(ctx, strtoi, nptr, endptr, base, low, high, rstatus);
8364 char *real_endptr;
8365 INTMAX_T ret = REAL(strtoi)(nptr, &real_endptr, base, low, high, rstatus);
8366 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
8367 if (rstatus)
8368 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus));
8369 return ret;
8370}
8371
8372INTERCEPTOR(UINTMAX_T, strtou, const char *nptr, char **endptr, int base,
8373 UINTMAX_T low, UINTMAX_T high, int *rstatus) {
8374 void *ctx;
8375 COMMON_INTERCEPTOR_ENTER(ctx, strtou, nptr, endptr, base, low, high, rstatus);
8376 char *real_endptr;
8377 UINTMAX_T ret = REAL(strtou)(nptr, &real_endptr, base, low, high, rstatus);
8378 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
8379 if (rstatus)
8380 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus));
8381 return ret;
8382}
8383#define INIT_STRTOI \
8384 COMMON_INTERCEPT_FUNCTION(strtoi); \
8385 COMMON_INTERCEPT_FUNCTION(strtou)
8386#else
8387#define INIT_STRTOI
8388#endif
8389
8390#if SANITIZER_INTERCEPT_CAPSICUM
8391#define CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights, ...) \
8392 { \
8393 void *ctx; \
8394 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_init, rights, ##__VA_ARGS__); \
8395 if (rights) \
8396 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8397 __sanitizer_cap_rights_t *ret = \
8398 REAL(cap_rights_init)(rights, ##__VA_ARGS__); \
8399 if (ret) \
8400 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
8401 return ret; \
8402 }
8403
8404#define CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights, ...) \
8405 { \
8406 void *ctx; \
8407 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_set, rights, ##__VA_ARGS__); \
8408 if (rights) \
8409 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8410 __sanitizer_cap_rights_t *ret = \
8411 REAL(cap_rights_set)(rights, ##__VA_ARGS__); \
8412 if (ret) \
8413 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
8414 return ret; \
8415 }
8416
8417#define CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights, ...) \
8418 { \
8419 void *ctx; \
8420 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_clear, rights, ##__VA_ARGS__); \
8421 if (rights) \
8422 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8423 __sanitizer_cap_rights_t *ret = \
8424 REAL(cap_rights_clear)(rights, ##__VA_ARGS__); \
8425 if (ret) \
8426 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \
8427 return ret; \
8428 }
8429
8430#define CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights, ...) \
8431 { \
8432 void *ctx; \
8433 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_set, rights, ##__VA_ARGS__); \
8434 if (rights) \
8435 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \
8436 return REAL(cap_rights_is_set)(rights, ##__VA_ARGS__); \
8437 }
8438
8439INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_init,
8440 __sanitizer_cap_rights_t *rights) {
8441 CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights);
8442}
8443
8444INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_set,
8445 __sanitizer_cap_rights_t *rights) {
8446 CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights);
8447}
8448
8449INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_clear,
8450 __sanitizer_cap_rights_t *rights) {
8451 CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights);
8452}
8453
8454INTERCEPTOR(bool, cap_rights_is_set,
8455 __sanitizer_cap_rights_t *rights) {
8456 CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights);
8457}
8458
8459INTERCEPTOR(int, cap_rights_limit, int fd,
8460 const __sanitizer_cap_rights_t *rights) {
8461 void *ctx;
8462 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_limit, fd, rights);
8463 if (rights)
8464 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights));
8465
8466 return REAL(cap_rights_limit)(fd, rights);
8467}
8468
8469INTERCEPTOR(int, cap_rights_get, int fd, __sanitizer_cap_rights_t *rights) {
8470 void *ctx;
8471 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_get, fd, rights);
8472 int ret = REAL(cap_rights_get)(fd, rights);
8473 if (!ret && rights)
8474 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rights, sizeof(*rights));
8475
8476 return ret;
8477}
8478
8479INTERCEPTOR(bool, cap_rights_is_valid, const __sanitizer_cap_rights_t *rights) {
8480 void *ctx;
8481 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_valid, rights);
8482 if (rights)
8483 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights));
8484
8485 return REAL(cap_rights_is_valid(rights));
8486}
8487
8488INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_merge,
8489 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) {
8490 void *ctx;
8491 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_merge, dst, src);
8492 if (src)
8493 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
8494
8495 __sanitizer_cap_rights *ret = REAL(cap_rights_merge)(dst, src);
8496 if (dst)
8497 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
8498
8499 return ret;
8500}
8501
8502INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_remove,
8503 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) {
8504 void *ctx;
8505 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_remove, dst, src);
8506 if (src)
8507 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
8508
8509 __sanitizer_cap_rights *ret = REAL(cap_rights_remove)(dst, src);
8510 if (dst)
8511 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst));
8512
8513 return ret;
8514}
8515
8516INTERCEPTOR(bool, cap_rights_contains, const __sanitizer_cap_rights *big,
8517 const __sanitizer_cap_rights *little) {
8518 void *ctx;
8519 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_contains, big, little);
8520 if (little)
8521 COMMON_INTERCEPTOR_READ_RANGE(ctx, little, sizeof(*little));
8522 if (big)
8523 COMMON_INTERCEPTOR_READ_RANGE(ctx, big, sizeof(*big));
8524
8525 return REAL(cap_rights_contains)(big, little);
8526}
8527
8528INTERCEPTOR(int, cap_ioctls_limit, int fd, const uptr *cmds, SIZE_T ncmds) {
8529 void *ctx;
8530 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_limit, fd, cmds, ncmds);
8531 if (cmds)
8532 COMMON_INTERCEPTOR_READ_RANGE(ctx, cmds, sizeof(*cmds) * ncmds);
8533
8534 return REAL(cap_ioctls_limit)(fd, cmds, ncmds);
8535}
8536
8537INTERCEPTOR(int, cap_ioctls_get, int fd, uptr *cmds, SIZE_T maxcmds) {
8538 void *ctx;
8539 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_get, fd, cmds, maxcmds);
8540 int ret = REAL(cap_ioctls_get)(fd, cmds, maxcmds);
8541 if (!ret && cmds)
8542 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cmds, sizeof(*cmds) * maxcmds);
8543
8544 return ret;
8545}
8546#define INIT_CAPSICUM \
8547 COMMON_INTERCEPT_FUNCTION(cap_rights_init); \
8548 COMMON_INTERCEPT_FUNCTION(cap_rights_set); \
8549 COMMON_INTERCEPT_FUNCTION(cap_rights_clear); \
8550 COMMON_INTERCEPT_FUNCTION(cap_rights_is_set); \
8551 COMMON_INTERCEPT_FUNCTION(cap_rights_get); \
8552 COMMON_INTERCEPT_FUNCTION(cap_rights_limit); \
8553 COMMON_INTERCEPT_FUNCTION(cap_rights_contains); \
8554 COMMON_INTERCEPT_FUNCTION(cap_rights_remove); \
8555 COMMON_INTERCEPT_FUNCTION(cap_rights_merge); \
8556 COMMON_INTERCEPT_FUNCTION(cap_rights_is_valid); \
8557 COMMON_INTERCEPT_FUNCTION(cap_ioctls_get); \
8558 COMMON_INTERCEPT_FUNCTION(cap_ioctls_limit)
8559#else
8560#define INIT_CAPSICUM
8561#endif
8562
8563#if SANITIZER_INTERCEPT_SHA1
8564INTERCEPTOR(void, SHA1Init, void *context) {
8565 void *ctx;
8566 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Init, context);
8567 REAL(SHA1Init)(context);
8568 if (context)
8569 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz);
8570}
8571INTERCEPTOR(void, SHA1Update, void *context, const u8 *data, unsigned len) {
8572 void *ctx;
8573 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Update, context, data, len);
8574 if (data && len > 0)
8575 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8576 if (context)
8577 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz);
8578 REAL(SHA1Update)(context, data, len);
8579 if (context)
8580 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz);
8581}
8582INTERCEPTOR(void, SHA1Final, u8 digest[20], void *context) {
8583 void *ctx;
8584 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Final, digest, context);
8585 if (context)
8586 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz);
8587 REAL(SHA1Final)(digest, context);
8588 if (digest)
8589 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20);
8590}
8591INTERCEPTOR(void, SHA1Transform, u32 state[5], u8 buffer[64]) {
8592 void *ctx;
8593 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Transform, state, buffer);
8594 if (state)
8595 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5);
8596 if (buffer)
8597 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u8) * 64);
8598 REAL(SHA1Transform)(state, buffer);
8599 if (state)
8600 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5);
8601}
8602INTERCEPTOR(char *, SHA1End, void *context, char *buf) {
8603 void *ctx;
8604 COMMON_INTERCEPTOR_ENTER(ctx, SHA1End, context, buf);
8605 if (context)
8606 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz);
8607 char *ret = REAL(SHA1End)(context, buf);
8608 if (ret)
8609 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8610 return ret;
8611}
8612INTERCEPTOR(char *, SHA1File, char *filename, char *buf) {
8613 void *ctx;
8614 COMMON_INTERCEPTOR_ENTER(ctx, SHA1File, filename, buf);
8615 if (filename)
8616 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8617 char *ret = REAL(SHA1File)(filename, buf);
8618 if (ret)
8619 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8620 return ret;
8621}
8622INTERCEPTOR(char *, SHA1FileChunk, char *filename, char *buf, OFF_T offset,
8623 OFF_T length) {
8624 void *ctx;
8625 COMMON_INTERCEPTOR_ENTER(ctx, SHA1FileChunk, filename, buf, offset, length);
8626 if (filename)
8627 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8628 char *ret = REAL(SHA1FileChunk)(filename, buf, offset, length);
8629 if (ret)
8630 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8631 return ret;
8632}
8633INTERCEPTOR(char *, SHA1Data, u8 *data, SIZE_T len, char *buf) {
8634 void *ctx;
8635 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Data, data, len, buf);
8636 if (data)
8637 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8638 char *ret = REAL(SHA1Data)(data, len, buf);
8639 if (ret)
8640 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length);
8641 return ret;
8642}
8643#define INIT_SHA1 \
8644 COMMON_INTERCEPT_FUNCTION(SHA1Init); \
8645 COMMON_INTERCEPT_FUNCTION(SHA1Update); \
8646 COMMON_INTERCEPT_FUNCTION(SHA1Final); \
8647 COMMON_INTERCEPT_FUNCTION(SHA1Transform); \
8648 COMMON_INTERCEPT_FUNCTION(SHA1End); \
8649 COMMON_INTERCEPT_FUNCTION(SHA1File); \
8650 COMMON_INTERCEPT_FUNCTION(SHA1FileChunk); \
8651 COMMON_INTERCEPT_FUNCTION(SHA1Data)
8652#else
8653#define INIT_SHA1
8654#endif
8655
8656#if SANITIZER_INTERCEPT_MD4
8657INTERCEPTOR(void, MD4Init, void *context) {
8658 void *ctx;
8659 COMMON_INTERCEPTOR_ENTER(ctx, MD4Init, context);
8660 REAL(MD4Init)(context);
8661 if (context)
8662 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz);
8663}
8664
8665INTERCEPTOR(void, MD4Update, void *context, const unsigned char *data,
8666 unsigned int len) {
8667 void *ctx;
8668 COMMON_INTERCEPTOR_ENTER(ctx, MD4Update, context, data, len);
8669 if (data && len > 0)
8670 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8671 if (context)
8672 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz);
8673 REAL(MD4Update)(context, data, len);
8674 if (context)
8675 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz);
8676}
8677
8678INTERCEPTOR(void, MD4Final, unsigned char digest[16], void *context) {
8679 void *ctx;
8680 COMMON_INTERCEPTOR_ENTER(ctx, MD4Final, digest, context);
8681 if (context)
8682 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz);
8683 REAL(MD4Final)(digest, context);
8684 if (digest)
8685 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16);
8686}
8687
8688INTERCEPTOR(char *, MD4End, void *context, char *buf) {
8689 void *ctx;
8690 COMMON_INTERCEPTOR_ENTER(ctx, MD4End, context, buf);
8691 if (context)
8692 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz);
8693 char *ret = REAL(MD4End)(context, buf);
8694 if (ret)
8695 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length);
8696 return ret;
8697}
8698
8699INTERCEPTOR(char *, MD4File, const char *filename, char *buf) {
8700 void *ctx;
8701 COMMON_INTERCEPTOR_ENTER(ctx, MD4File, filename, buf);
8702 if (filename)
8703 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8704 char *ret = REAL(MD4File)(filename, buf);
8705 if (ret)
8706 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length);
8707 return ret;
8708}
8709
8710INTERCEPTOR(char *, MD4Data, const unsigned char *data, unsigned int len,
8711 char *buf) {
8712 void *ctx;
8713 COMMON_INTERCEPTOR_ENTER(ctx, MD4Data, data, len, buf);
8714 if (data && len > 0)
8715 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8716 char *ret = REAL(MD4Data)(data, len, buf);
8717 if (ret)
8718 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length);
8719 return ret;
8720}
8721
8722#define INIT_MD4 \
8723 COMMON_INTERCEPT_FUNCTION(MD4Init); \
8724 COMMON_INTERCEPT_FUNCTION(MD4Update); \
8725 COMMON_INTERCEPT_FUNCTION(MD4Final); \
8726 COMMON_INTERCEPT_FUNCTION(MD4End); \
8727 COMMON_INTERCEPT_FUNCTION(MD4File); \
8728 COMMON_INTERCEPT_FUNCTION(MD4Data)
8729#else
8730#define INIT_MD4
8731#endif
8732
8733#if SANITIZER_INTERCEPT_RMD160
8734INTERCEPTOR(void, RMD160Init, void *context) {
8735 void *ctx;
8736 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Init, context);
8737 REAL(RMD160Init)(context);
8738 if (context)
8739 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz);
8740}
8741INTERCEPTOR(void, RMD160Update, void *context, const u8 *data, unsigned len) {
8742 void *ctx;
8743 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Update, context, data, len);
8744 if (data && len > 0)
8745 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8746 if (context)
8747 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz);
8748 REAL(RMD160Update)(context, data, len);
8749 if (context)
8750 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz);
8751}
8752INTERCEPTOR(void, RMD160Final, u8 digest[20], void *context) {
8753 void *ctx;
8754 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Final, digest, context);
8755 if (context)
8756 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz);
8757 REAL(RMD160Final)(digest, context);
8758 if (digest)
8759 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20);
8760}
8761INTERCEPTOR(void, RMD160Transform, u32 state[5], u16 buffer[16]) {
8762 void *ctx;
8763 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Transform, state, buffer);
8764 if (state)
8765 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5);
8766 if (buffer)
8767 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u32) * 16);
8768 REAL(RMD160Transform)(state, buffer);
8769 if (state)
8770 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5);
8771}
8772INTERCEPTOR(char *, RMD160End, void *context, char *buf) {
8773 void *ctx;
8774 COMMON_INTERCEPTOR_ENTER(ctx, RMD160End, context, buf);
8775 if (context)
8776 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz);
8777 char *ret = REAL(RMD160End)(context, buf);
8778 if (ret)
8779 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8780 return ret;
8781}
8782INTERCEPTOR(char *, RMD160File, char *filename, char *buf) {
8783 void *ctx;
8784 COMMON_INTERCEPTOR_ENTER(ctx, RMD160File, filename, buf);
8785 if (filename)
8786 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8787 char *ret = REAL(RMD160File)(filename, buf);
8788 if (ret)
8789 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8790 return ret;
8791}
8792INTERCEPTOR(char *, RMD160FileChunk, char *filename, char *buf, OFF_T offset,
8793 OFF_T length) {
8794 void *ctx;
8795 COMMON_INTERCEPTOR_ENTER(ctx, RMD160FileChunk, filename, buf, offset, length);
8796 if (filename)
8797 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8798 char *ret = REAL(RMD160FileChunk)(filename, buf, offset, length);
8799 if (ret)
8800 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8801 return ret;
8802}
8803INTERCEPTOR(char *, RMD160Data, u8 *data, SIZE_T len, char *buf) {
8804 void *ctx;
8805 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Data, data, len, buf);
8806 if (data && len > 0)
8807 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8808 char *ret = REAL(RMD160Data)(data, len, buf);
8809 if (ret)
8810 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length);
8811 return ret;
8812}
8813#define INIT_RMD160 \
8814 COMMON_INTERCEPT_FUNCTION(RMD160Init); \
8815 COMMON_INTERCEPT_FUNCTION(RMD160Update); \
8816 COMMON_INTERCEPT_FUNCTION(RMD160Final); \
8817 COMMON_INTERCEPT_FUNCTION(RMD160Transform); \
8818 COMMON_INTERCEPT_FUNCTION(RMD160End); \
8819 COMMON_INTERCEPT_FUNCTION(RMD160File); \
8820 COMMON_INTERCEPT_FUNCTION(RMD160FileChunk); \
8821 COMMON_INTERCEPT_FUNCTION(RMD160Data)
8822#else
8823#define INIT_RMD160
8824#endif
8825
8826#if SANITIZER_INTERCEPT_MD5
8827INTERCEPTOR(void, MD5Init, void *context) {
8828 void *ctx;
8829 COMMON_INTERCEPTOR_ENTER(ctx, MD5Init, context);
8830 REAL(MD5Init)(context);
8831 if (context)
8832 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD5_CTX_sz);
8833}
8834
8835INTERCEPTOR(void, MD5Update, void *context, const unsigned char *data,
8836 unsigned int len) {
8837 void *ctx;
8838 COMMON_INTERCEPTOR_ENTER(ctx, MD5Update, context, data, len);
8839 if (data && len > 0)
8840 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8841 if (context)
8842 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz);
8843 REAL(MD5Update)(context, data, len);
8844 if (context)
8845 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD5_CTX_sz);
8846}
8847
8848INTERCEPTOR(void, MD5Final, unsigned char digest[16], void *context) {
8849 void *ctx;
8850 COMMON_INTERCEPTOR_ENTER(ctx, MD5Final, digest, context);
8851 if (context)
8852 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz);
8853 REAL(MD5Final)(digest, context);
8854 if (digest)
8855 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16);
8856}
8857
8858INTERCEPTOR(char *, MD5End, void *context, char *buf) {
8859 void *ctx;
8860 COMMON_INTERCEPTOR_ENTER(ctx, MD5End, context, buf);
8861 if (context)
8862 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz);
8863 char *ret = REAL(MD5End)(context, buf);
8864 if (ret)
8865 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length);
8866 return ret;
8867}
8868
8869INTERCEPTOR(char *, MD5File, const char *filename, char *buf) {
8870 void *ctx;
8871 COMMON_INTERCEPTOR_ENTER(ctx, MD5File, filename, buf);
8872 if (filename)
8873 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
8874 char *ret = REAL(MD5File)(filename, buf);
8875 if (ret)
8876 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length);
8877 return ret;
8878}
8879
8880INTERCEPTOR(char *, MD5Data, const unsigned char *data, unsigned int len,
8881 char *buf) {
8882 void *ctx;
8883 COMMON_INTERCEPTOR_ENTER(ctx, MD5Data, data, len, buf);
8884 if (data && len > 0)
8885 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8886 char *ret = REAL(MD5Data)(data, len, buf);
8887 if (ret)
8888 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length);
8889 return ret;
8890}
8891
8892#define INIT_MD5 \
8893 COMMON_INTERCEPT_FUNCTION(MD5Init); \
8894 COMMON_INTERCEPT_FUNCTION(MD5Update); \
8895 COMMON_INTERCEPT_FUNCTION(MD5Final); \
8896 COMMON_INTERCEPT_FUNCTION(MD5End); \
8897 COMMON_INTERCEPT_FUNCTION(MD5File); \
8898 COMMON_INTERCEPT_FUNCTION(MD5Data)
8899#else
8900#define INIT_MD5
8901#endif
8902
8903#if SANITIZER_INTERCEPT_FSEEK
8904INTERCEPTOR(int, fseek, __sanitizer_FILE *stream, long int offset, int whence) {
8905 void *ctx;
8906 COMMON_INTERCEPTOR_ENTER(ctx, fseek, stream, offset, whence);
8907 return REAL(fseek)(stream, offset, whence);
8908}
8909INTERCEPTOR(int, fseeko, __sanitizer_FILE *stream, OFF_T offset, int whence) {
8910 void *ctx;
8911 COMMON_INTERCEPTOR_ENTER(ctx, fseeko, stream, offset, whence);
8912 return REAL(fseeko)(stream, offset, whence);
8913}
8914INTERCEPTOR(long int, ftell, __sanitizer_FILE *stream) {
8915 void *ctx;
8916 COMMON_INTERCEPTOR_ENTER(ctx, ftell, stream);
8917 return REAL(ftell)(stream);
8918}
8919INTERCEPTOR(OFF_T, ftello, __sanitizer_FILE *stream) {
8920 void *ctx;
8921 COMMON_INTERCEPTOR_ENTER(ctx, ftello, stream);
8922 return REAL(ftello)(stream);
8923}
8924INTERCEPTOR(void, rewind, __sanitizer_FILE *stream) {
8925 void *ctx;
8926 COMMON_INTERCEPTOR_ENTER(ctx, rewind, stream);
8927 return REAL(rewind)(stream);
8928}
8929INTERCEPTOR(int, fgetpos, __sanitizer_FILE *stream, void *pos) {
8930 void *ctx;
8931 COMMON_INTERCEPTOR_ENTER(ctx, fgetpos, stream, pos);
8932 int ret = REAL(fgetpos)(stream, pos);
8933 if (pos && !ret)
8934 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pos, fpos_t_sz);
8935 return ret;
8936}
8937INTERCEPTOR(int, fsetpos, __sanitizer_FILE *stream, const void *pos) {
8938 void *ctx;
8939 COMMON_INTERCEPTOR_ENTER(ctx, fsetpos, stream, pos);
8940 if (pos)
8941 COMMON_INTERCEPTOR_READ_RANGE(ctx, pos, fpos_t_sz);
8942 return REAL(fsetpos)(stream, pos);
8943}
8944#define INIT_FSEEK \
8945 COMMON_INTERCEPT_FUNCTION(fseek); \
8946 COMMON_INTERCEPT_FUNCTION(fseeko); \
8947 COMMON_INTERCEPT_FUNCTION(ftell); \
8948 COMMON_INTERCEPT_FUNCTION(ftello); \
8949 COMMON_INTERCEPT_FUNCTION(rewind); \
8950 COMMON_INTERCEPT_FUNCTION(fgetpos); \
8951 COMMON_INTERCEPT_FUNCTION(fsetpos)
8952#else
8953#define INIT_FSEEK
8954#endif
8955
8956#if SANITIZER_INTERCEPT_MD2
8957INTERCEPTOR(void, MD2Init, void *context) {
8958 void *ctx;
8959 COMMON_INTERCEPTOR_ENTER(ctx, MD2Init, context);
8960 REAL(MD2Init)(context);
8961 if (context)
8962 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz);
8963}
8964
8965INTERCEPTOR(void, MD2Update, void *context, const unsigned char *data,
8966 unsigned int len) {
8967 void *ctx;
8968 COMMON_INTERCEPTOR_ENTER(ctx, MD2Update, context, data, len);
8969 if (data && len > 0)
8970 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
8971 if (context)
8972 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz);
8973 REAL(MD2Update)(context, data, len);
8974 if (context)
8975 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz);
8976}
8977
8978INTERCEPTOR(void, MD2Final, unsigned char digest[16], void *context) {
8979 void *ctx;
8980 COMMON_INTERCEPTOR_ENTER(ctx, MD2Final, digest, context);
8981 if (context)
8982 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz);
8983 REAL(MD2Final)(digest, context);
8984 if (digest)
8985 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16);
8986}
8987
8988INTERCEPTOR(char *, MD2End, void *context, char *buf) {
8989 void *ctx;
8990 COMMON_INTERCEPTOR_ENTER(ctx, MD2End, context, buf);
8991 if (context)
8992 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz);
8993 char *ret = REAL(MD2End)(context, buf);
8994 if (ret)
8995 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length);
8996 return ret;
8997}
8998
8999INTERCEPTOR(char *, MD2File, const char *filename, char *buf) {
9000 void *ctx;
9001 COMMON_INTERCEPTOR_ENTER(ctx, MD2File, filename, buf);
9002 if (filename)
9003 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);
9004 char *ret = REAL(MD2File)(filename, buf);
9005 if (ret)
9006 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length);
9007 return ret;
9008}
9009
9010INTERCEPTOR(char *, MD2Data, const unsigned char *data, unsigned int len,
9011 char *buf) {
9012 void *ctx;
9013 COMMON_INTERCEPTOR_ENTER(ctx, MD2Data, data, len, buf);
9014 if (data && len > 0)
9015 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len);
9016 char *ret = REAL(MD2Data)(data, len, buf);
9017 if (ret)
9018 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length);
9019 return ret;
9020}
9021
9022#define INIT_MD2 \
9023 COMMON_INTERCEPT_FUNCTION(MD2Init); \
9024 COMMON_INTERCEPT_FUNCTION(MD2Update); \
9025 COMMON_INTERCEPT_FUNCTION(MD2Final); \
9026 COMMON_INTERCEPT_FUNCTION(MD2End); \
9027 COMMON_INTERCEPT_FUNCTION(MD2File); \
9028 COMMON_INTERCEPT_FUNCTION(MD2Data)
9029#else
9030#define INIT_MD2
9031#endif
9032
9033#if SANITIZER_INTERCEPT_SHA2
9034#define SHA2_INTERCEPTORS(LEN, SHA2_STATE_T) \
9035 INTERCEPTOR(void, SHA##LEN##_Init, void *context) { \
9036 void *ctx; \
9037 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Init, context); \
9038 REAL(SHA##LEN##_Init)(context); \
9039 if (context) \
9040 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA##LEN##_CTX_sz); \
9041 } \
9042 INTERCEPTOR(void, SHA##LEN##_Update, void *context, \
9043 const u8 *data, SIZE_T len) { \
9044 void *ctx; \
9045 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Update, context, data, len); \
9046 if (data && len > 0) \
9047 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); \
9048 if (context) \
9049 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \
9050 REAL(SHA##LEN##_Update)(context, data, len); \
9051 if (context) \
9052 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA##LEN##_CTX_sz); \
9053 } \
9054 INTERCEPTOR(void, SHA##LEN##_Final, u8 digest[LEN/8], \
9055 void *context) { \
9056 void *ctx; \
9057 CHECK_EQ(SHA##LEN##_digest_length, LEN/8); \
9058 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Final, digest, context); \
9059 if (context) \
9060 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \
9061 REAL(SHA##LEN##_Final)(digest, context); \
9062 if (digest) \
9063 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, \
9064 sizeof(digest[0]) * \
9065 SHA##LEN##_digest_length); \
9066 } \
9067 INTERCEPTOR(char *, SHA##LEN##_End, void *context, char *buf) { \
9068 void *ctx; \
9069 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_End, context, buf); \
9070 if (context) \
9071 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \
9072 char *ret = REAL(SHA##LEN##_End)(context, buf); \
9073 if (ret) \
9074 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \
9075 return ret; \
9076 } \
9077 INTERCEPTOR(char *, SHA##LEN##_File, const char *filename, char *buf) { \
9078 void *ctx; \
9079 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_File, filename, buf); \
9080 if (filename) \
9081 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);\
9082 char *ret = REAL(SHA##LEN##_File)(filename, buf); \
9083 if (ret) \
9084 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \
9085 return ret; \
9086 } \
9087 INTERCEPTOR(char *, SHA##LEN##_FileChunk, const char *filename, char *buf, \
9088 OFF_T offset, OFF_T length) { \
9089 void *ctx; \
9090 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_FileChunk, filename, buf, offset, \
9091 length); \
9092 if (filename) \
9093 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);\
9094 char *ret = REAL(SHA##LEN##_FileChunk)(filename, buf, offset, length); \
9095 if (ret) \
9096 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \
9097 return ret; \
9098 } \
9099 INTERCEPTOR(char *, SHA##LEN##_Data, u8 *data, SIZE_T len, char *buf) { \
9100 void *ctx; \
9101 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Data, data, len, buf); \
9102 if (data && len > 0) \
9103 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); \
9104 char *ret = REAL(SHA##LEN##_Data)(data, len, buf); \
9105 if (ret) \
9106 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \
9107 return ret; \
9108 }
9109
9110SHA2_INTERCEPTORS(224, u32)
9111SHA2_INTERCEPTORS(256, u32)
9112SHA2_INTERCEPTORS(384, u64)
9113SHA2_INTERCEPTORS(512, u64)
9114
9115#define INIT_SHA2_INTECEPTORS(LEN) \
9116 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Init); \
9117 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Update); \
9118 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Final); \
9119 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_End); \
9120 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_File); \
9121 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_FileChunk); \
9122 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Data)
9123
9124#define INIT_SHA2 \
9125 INIT_SHA2_INTECEPTORS(224); \
9126 INIT_SHA2_INTECEPTORS(256); \
9127 INIT_SHA2_INTECEPTORS(384); \
9128 INIT_SHA2_INTECEPTORS(512)
9129#undef SHA2_INTERCEPTORS
9130#else
9131#define INIT_SHA2
9132#endif
9133
9134#if SANITIZER_INTERCEPT_VIS
9135INTERCEPTOR(char *, vis, char *dst, int c, int flag, int nextc) {
9136 void *ctx;
9137 COMMON_INTERCEPTOR_ENTER(ctx, vis, dst, c, flag, nextc);
9138 char *end = REAL(vis)(dst, c, flag, nextc);
9139 // dst is NULL terminated and end points to the NULL char
9140 if (dst && end)
9141 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1);
9142 return end;
9143}
9144INTERCEPTOR(char *, nvis, char *dst, SIZE_T dlen, int c, int flag, int nextc) {
9145 void *ctx;
9146 COMMON_INTERCEPTOR_ENTER(ctx, nvis, dst, dlen, c, flag, nextc);
9147 char *end = REAL(nvis)(dst, dlen, c, flag, nextc);
9148 // nvis cannot make sure the dst is NULL terminated
9149 if (dst && end)
9150 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1);
9151 return end;
9152}
9153INTERCEPTOR(int, strvis, char *dst, const char *src, int flag) {
9154 void *ctx;
9155 COMMON_INTERCEPTOR_ENTER(ctx, strvis, dst, src, flag);
9156 if (src)
9157 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9158 int len = REAL(strvis)(dst, src, flag);
9159 if (dst)
9160 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9161 return len;
9162}
9163INTERCEPTOR(int, stravis, char **dst, const char *src, int flag) {
9164 void *ctx;
9165 COMMON_INTERCEPTOR_ENTER(ctx, stravis, dst, src, flag);
9166 if (src)
9167 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9168 int len = REAL(stravis)(dst, src, flag);
9169 if (dst) {
9170 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(char *));
9171 if (*dst)
9172 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *dst, len + 1);
9173 }
9174 return len;
9175}
9176INTERCEPTOR(int, strnvis, char *dst, SIZE_T dlen, const char *src, int flag) {
9177 void *ctx;
9178 COMMON_INTERCEPTOR_ENTER(ctx, strnvis, dst, dlen, src, flag);
9179 if (src)
9180 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9181 int len = REAL(strnvis)(dst, dlen, src, flag);
9182 // The interface will be valid even if there is no space for NULL char
9183 if (dst && len > 0)
9184 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9185 return len;
9186}
9187INTERCEPTOR(int, strvisx, char *dst, const char *src, SIZE_T len, int flag) {
9188 void *ctx;
9189 COMMON_INTERCEPTOR_ENTER(ctx, strvisx, dst, src, len, flag);
9190 if (src)
9191 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9192 int ret = REAL(strvisx)(dst, src, len, flag);
9193 if (dst)
9194 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9195 return ret;
9196}
9197INTERCEPTOR(int, strnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len,
9198 int flag) {
9199 void *ctx;
9200 COMMON_INTERCEPTOR_ENTER(ctx, strnvisx, dst, dlen, src, len, flag);
9201 if (src)
9202 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9203 int ret = REAL(strnvisx)(dst, dlen, src, len, flag);
9204 if (dst && ret >= 0)
9205 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9206 return ret;
9207}
9208INTERCEPTOR(int, strenvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len,
9209 int flag, int *cerr_ptr) {
9210 void *ctx;
9211 COMMON_INTERCEPTOR_ENTER(ctx, strenvisx, dst, dlen, src, len, flag, cerr_ptr);
9212 if (src)
9213 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9214 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold
9215 // according to the implementation
9216 if (cerr_ptr)
9217 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int));
9218 int ret = REAL(strenvisx)(dst, dlen, src, len, flag, cerr_ptr);
9219 if (dst && ret >= 0)
9220 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9221 if (cerr_ptr)
9222 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int));
9223 return ret;
9224}
9225INTERCEPTOR(char *, svis, char *dst, int c, int flag, int nextc,
9226 const char *extra) {
9227 void *ctx;
9228 COMMON_INTERCEPTOR_ENTER(ctx, svis, dst, c, flag, nextc, extra);
9229 if (extra)
9230 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9231 char *end = REAL(svis)(dst, c, flag, nextc, extra);
9232 if (dst && end)
9233 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1);
9234 return end;
9235}
9236INTERCEPTOR(char *, snvis, char *dst, SIZE_T dlen, int c, int flag, int nextc,
9237 const char *extra) {
9238 void *ctx;
9239 COMMON_INTERCEPTOR_ENTER(ctx, snvis, dst, dlen, c, flag, nextc, extra);
9240 if (extra)
9241 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9242 char *end = REAL(snvis)(dst, dlen, c, flag, nextc, extra);
9243 if (dst && end)
9244 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst,
9245 Min((SIZE_T)(end - dst + 1), dlen));
9246 return end;
9247}
9248INTERCEPTOR(int, strsvis, char *dst, const char *src, int flag,
9249 const char *extra) {
9250 void *ctx;
9251 COMMON_INTERCEPTOR_ENTER(ctx, strsvis, dst, src, flag, extra);
9252 if (src)
9253 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9254 if (extra)
9255 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9256 int len = REAL(strsvis)(dst, src, flag, extra);
9257 if (dst)
9258 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9259 return len;
9260}
9261INTERCEPTOR(int, strsnvis, char *dst, SIZE_T dlen, const char *src, int flag,
9262 const char *extra) {
9263 void *ctx;
9264 COMMON_INTERCEPTOR_ENTER(ctx, strsnvis, dst, dlen, src, flag, extra);
9265 if (src)
9266 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9267 if (extra)
9268 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9269 int len = REAL(strsnvis)(dst, dlen, src, flag, extra);
9270 // The interface will be valid even if there is no space for NULL char
9271 if (dst && len >= 0)
9272 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1);
9273 return len;
9274}
9275INTERCEPTOR(int, strsvisx, char *dst, const char *src, SIZE_T len, int flag,
9276 const char *extra) {
9277 void *ctx;
9278 COMMON_INTERCEPTOR_ENTER(ctx, strsvisx, dst, src, len, flag, extra);
9279 if (src)
9280 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9281 if (extra)
9282 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9283 int ret = REAL(strsvisx)(dst, src, len, flag, extra);
9284 if (dst)
9285 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9286 return ret;
9287}
9288INTERCEPTOR(int, strsnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len,
9289 int flag, const char *extra) {
9290 void *ctx;
9291 COMMON_INTERCEPTOR_ENTER(ctx, strsnvisx, dst, dlen, src, len, flag, extra);
9292 if (src)
9293 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9294 if (extra)
9295 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9296 int ret = REAL(strsnvisx)(dst, dlen, src, len, flag, extra);
9297 if (dst && ret >= 0)
9298 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9299 return ret;
9300}
9301INTERCEPTOR(int, strsenvisx, char *dst, SIZE_T dlen, const char *src,
9302 SIZE_T len, int flag, const char *extra, int *cerr_ptr) {
9303 void *ctx;
9304 COMMON_INTERCEPTOR_ENTER(ctx, strsenvisx, dst, dlen, src, len, flag, extra,
9305 cerr_ptr);
9306 if (src)
9307 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len);
9308 if (extra)
9309 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1);
9310 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold
9311 // according to the implementation
9312 if (cerr_ptr)
9313 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int));
9314 int ret = REAL(strsenvisx)(dst, dlen, src, len, flag, extra, cerr_ptr);
9315 if (dst && ret >= 0)
9316 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9317 if (cerr_ptr)
9318 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int));
9319 return ret;
9320}
9321INTERCEPTOR(int, unvis, char *cp, int c, int *astate, int flag) {
9322 void *ctx;
9323 COMMON_INTERCEPTOR_ENTER(ctx, unvis, cp, c, astate, flag);
9324 if (astate)
9325 COMMON_INTERCEPTOR_READ_RANGE(ctx, astate, sizeof(*astate));
9326 int ret = REAL(unvis)(cp, c, astate, flag);
9327 if (ret == unvis_valid || ret == unvis_validpush) {
9328 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cp, sizeof(*cp));
9329 }
9330 return ret;
9331}
9332INTERCEPTOR(int, strunvis, char *dst, const char *src) {
9333 void *ctx;
9334 COMMON_INTERCEPTOR_ENTER(ctx, strunvis, dst, src);
9335 if (src)
9336 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9337 int ret = REAL(strunvis)(dst, src);
9338 if (ret != -1)
9339 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9340 return ret;
9341}
9342INTERCEPTOR(int, strnunvis, char *dst, SIZE_T dlen, const char *src) {
9343 void *ctx;
9344 COMMON_INTERCEPTOR_ENTER(ctx, strnunvis, dst, dlen, src);
9345 if (src)
9346 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9347 int ret = REAL(strnunvis)(dst, dlen, src);
9348 if (ret != -1)
9349 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9350 return ret;
9351}
9352INTERCEPTOR(int, strunvisx, char *dst, const char *src, int flag) {
9353 void *ctx;
9354 COMMON_INTERCEPTOR_ENTER(ctx, strunvisx, dst, src, flag);
9355 if (src)
9356 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9357 int ret = REAL(strunvisx)(dst, src, flag);
9358 if (ret != -1)
9359 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9360 return ret;
9361}
9362INTERCEPTOR(int, strnunvisx, char *dst, SIZE_T dlen, const char *src,
9363 int flag) {
9364 void *ctx;
9365 COMMON_INTERCEPTOR_ENTER(ctx, strnunvisx, dst, dlen, src, flag);
9366 if (src)
9367 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1);
9368 int ret = REAL(strnunvisx)(dst, dlen, src, flag);
9369 if (ret != -1)
9370 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1);
9371 return ret;
9372}
9373#define INIT_VIS \
9374 COMMON_INTERCEPT_FUNCTION(vis); \
9375 COMMON_INTERCEPT_FUNCTION(nvis); \
9376 COMMON_INTERCEPT_FUNCTION(strvis); \
9377 COMMON_INTERCEPT_FUNCTION(stravis); \
9378 COMMON_INTERCEPT_FUNCTION(strnvis); \
9379 COMMON_INTERCEPT_FUNCTION(strvisx); \
9380 COMMON_INTERCEPT_FUNCTION(strnvisx); \
9381 COMMON_INTERCEPT_FUNCTION(strenvisx); \
9382 COMMON_INTERCEPT_FUNCTION(svis); \
9383 COMMON_INTERCEPT_FUNCTION(snvis); \
9384 COMMON_INTERCEPT_FUNCTION(strsvis); \
9385 COMMON_INTERCEPT_FUNCTION(strsnvis); \
9386 COMMON_INTERCEPT_FUNCTION(strsvisx); \
9387 COMMON_INTERCEPT_FUNCTION(strsnvisx); \
9388 COMMON_INTERCEPT_FUNCTION(strsenvisx); \
9389 COMMON_INTERCEPT_FUNCTION(unvis); \
9390 COMMON_INTERCEPT_FUNCTION(strunvis); \
9391 COMMON_INTERCEPT_FUNCTION(strnunvis); \
9392 COMMON_INTERCEPT_FUNCTION(strunvisx); \
9393 COMMON_INTERCEPT_FUNCTION(strnunvisx)
9394#else
9395#define INIT_VIS
9396#endif
9397
9398#if SANITIZER_INTERCEPT_CDB
9399INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open, const char *path, int flags) {
9400 void *ctx;
9401 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open, path, flags);
9402 if (path)
9403 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
9404 struct __sanitizer_cdbr *cdbr = REAL(cdbr_open)(path, flags);
9405 if (cdbr)
9406 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr));
9407 return cdbr;
9408}
9409
9410INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open_mem, void *base, SIZE_T size,
9411 int flags, void (*unmap)(void *, void *, SIZE_T), void *cookie) {
9412 void *ctx;
9413 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open_mem, base, size, flags, unmap,
9414 cookie);
9415 if (base && size)
9416 COMMON_INTERCEPTOR_READ_RANGE(ctx, base, size);
9417 struct __sanitizer_cdbr *cdbr =
9418 REAL(cdbr_open_mem)(base, size, flags, unmap, cookie);
9419 if (cdbr)
9420 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr));
9421 return cdbr;
9422}
9423
9424INTERCEPTOR(u32, cdbr_entries, struct __sanitizer_cdbr *cdbr) {
9425 void *ctx;
9426 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_entries, cdbr);
9427 if (cdbr)
9428 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9429 return REAL(cdbr_entries)(cdbr);
9430}
9431
9432INTERCEPTOR(int, cdbr_get, struct __sanitizer_cdbr *cdbr, u32 index,
9433 const void **data, SIZE_T *datalen) {
9434 void *ctx;
9435 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_get, cdbr, index, data, datalen);
9436 if (cdbr)
9437 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9438 int ret = REAL(cdbr_get)(cdbr, index, data, datalen);
9439 if (!ret) {
9440 if (data)
9441 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data));
9442 if (datalen)
9443 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen));
9444 if (data && datalen)
9445 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen);
9446 }
9447 return ret;
9448}
9449
9450INTERCEPTOR(int, cdbr_find, struct __sanitizer_cdbr *cdbr, const void *key,
9451 SIZE_T keylen, const void **data, SIZE_T *datalen) {
9452 void *ctx;
9453 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_find, cdbr, key, keylen, data, datalen);
9454 if (cdbr)
9455 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9456 if (key)
9457 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen);
9458 int ret = REAL(cdbr_find)(cdbr, key, keylen, data, datalen);
9459 if (!ret) {
9460 if (data)
9461 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data));
9462 if (datalen)
9463 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen));
9464 if (data && datalen)
9465 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen);
9466 }
9467 return ret;
9468}
9469
9470INTERCEPTOR(void, cdbr_close, struct __sanitizer_cdbr *cdbr) {
9471 void *ctx;
9472 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_close, cdbr);
9473 if (cdbr)
9474 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr));
9475 REAL(cdbr_close)(cdbr);
9476}
9477
9478INTERCEPTOR(struct __sanitizer_cdbw *, cdbw_open) {
9479 void *ctx;
9480 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_open);
9481 struct __sanitizer_cdbw *ret = REAL(cdbw_open)();
9482 if (ret)
9483 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret));
9484 return ret;
9485}
9486
9487INTERCEPTOR(int, cdbw_put, struct __sanitizer_cdbw *cdbw, const void *key,
9488 SIZE_T keylen, const void *data, SIZE_T datalen) {
9489 void *ctx;
9490 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put, cdbw, key, keylen, data, datalen);
9491 if (cdbw)
9492 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9493 if (data && datalen)
9494 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen);
9495 if (key && keylen)
9496 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen);
9497 int ret = REAL(cdbw_put)(cdbw, key, keylen, data, datalen);
9498 if (!ret && cdbw)
9499 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9500 return ret;
9501}
9502
9503INTERCEPTOR(int, cdbw_put_data, struct __sanitizer_cdbw *cdbw, const void *data,
9504 SIZE_T datalen, u32 *index) {
9505 void *ctx;
9506 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_data, cdbw, data, datalen, index);
9507 if (cdbw)
9508 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9509 if (data && datalen)
9510 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen);
9511 int ret = REAL(cdbw_put_data)(cdbw, data, datalen, index);
9512 if (!ret) {
9513 if (index)
9514 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, index, sizeof(*index));
9515 if (cdbw)
9516 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9517 }
9518 return ret;
9519}
9520
9521INTERCEPTOR(int, cdbw_put_key, struct __sanitizer_cdbw *cdbw, const void *key,
9522 SIZE_T keylen, u32 index) {
9523 void *ctx;
9524 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_key, cdbw, key, keylen, index);
9525 if (cdbw)
9526 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9527 if (key && keylen)
9528 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen);
9529 int ret = REAL(cdbw_put_key)(cdbw, key, keylen, index);
9530 if (!ret && cdbw)
9531 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9532 return ret;
9533}
9534
9535INTERCEPTOR(int, cdbw_output, struct __sanitizer_cdbw *cdbw, int output,
9536 const char descr[16], u32 (*seedgen)(void)) {
9537 void *ctx;
9538 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_output, cdbw, output, descr, seedgen);
9539 COMMON_INTERCEPTOR_FD_ACCESS(ctx, output);
9540 if (cdbw)
9541 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9542 if (descr)
9543 COMMON_INTERCEPTOR_READ_RANGE(ctx, descr, internal_strnlen(descr, 16));
9544 if (seedgen)
9545 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)seedgen, sizeof(seedgen));
9546 int ret = REAL(cdbw_output)(cdbw, output, descr, seedgen);
9547 if (!ret) {
9548 if (cdbw)
9549 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw));
9550 if (output >= 0)
9551 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, output);
9552 }
9553 return ret;
9554}
9555
9556INTERCEPTOR(void, cdbw_close, struct __sanitizer_cdbw *cdbw) {
9557 void *ctx;
9558 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_close, cdbw);
9559 if (cdbw)
9560 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw));
9561 REAL(cdbw_close)(cdbw);
9562}
9563
9564#define INIT_CDB \
9565 COMMON_INTERCEPT_FUNCTION(cdbr_open); \
9566 COMMON_INTERCEPT_FUNCTION(cdbr_open_mem); \
9567 COMMON_INTERCEPT_FUNCTION(cdbr_entries); \
9568 COMMON_INTERCEPT_FUNCTION(cdbr_get); \
9569 COMMON_INTERCEPT_FUNCTION(cdbr_find); \
9570 COMMON_INTERCEPT_FUNCTION(cdbr_close); \
9571 COMMON_INTERCEPT_FUNCTION(cdbw_open); \
9572 COMMON_INTERCEPT_FUNCTION(cdbw_put); \
9573 COMMON_INTERCEPT_FUNCTION(cdbw_put_data); \
9574 COMMON_INTERCEPT_FUNCTION(cdbw_put_key); \
9575 COMMON_INTERCEPT_FUNCTION(cdbw_output); \
9576 COMMON_INTERCEPT_FUNCTION(cdbw_close)
9577#else
9578#define INIT_CDB
9579#endif
9580
9581#if SANITIZER_INTERCEPT_GETFSENT
9582INTERCEPTOR(void *, getfsent) {
9583 void *ctx;
9584 COMMON_INTERCEPTOR_ENTER(ctx, getfsent);
9585 void *ret = REAL(getfsent)();
9586 if (ret)
9587 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz);
9588 return ret;
9589}
9590
9591INTERCEPTOR(void *, getfsspec, const char *spec) {
9592 void *ctx;
9593 COMMON_INTERCEPTOR_ENTER(ctx, getfsspec, spec);
9594 if (spec)
9595 COMMON_INTERCEPTOR_READ_RANGE(ctx, spec, internal_strlen(spec) + 1);
9596 void *ret = REAL(getfsspec)(spec);
9597 if (ret)
9598 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz);
9599 return ret;
9600}
9601
9602INTERCEPTOR(void *, getfsfile, const char *file) {
9603 void *ctx;
9604 COMMON_INTERCEPTOR_ENTER(ctx, getfsfile, file);
9605 if (file)
9606 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1);
9607 void *ret = REAL(getfsfile)(file);
9608 if (ret)
9609 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz);
9610 return ret;
9611}
9612
9613#define INIT_GETFSENT \
9614 COMMON_INTERCEPT_FUNCTION(getfsent); \
9615 COMMON_INTERCEPT_FUNCTION(getfsspec); \
9616 COMMON_INTERCEPT_FUNCTION(getfsfile);
9617#else
9618#define INIT_GETFSENT
9619#endif
9620
9621#if SANITIZER_INTERCEPT_ARC4RANDOM
9622INTERCEPTOR(void, arc4random_buf, void *buf, SIZE_T len) {
9623 void *ctx;
9624 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_buf, buf, len);
9625 REAL(arc4random_buf)(buf, len);
9626 if (buf && len)
9627 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, len);
9628}
9629
9630INTERCEPTOR(void, arc4random_addrandom, u8 *dat, int datlen) {
9631 void *ctx;
9632 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_addrandom, dat, datlen);
9633 if (dat && datlen)
9634 COMMON_INTERCEPTOR_READ_RANGE(ctx, dat, datlen);
9635 REAL(arc4random_addrandom)(dat, datlen);
9636}
9637
9638#define INIT_ARC4RANDOM \
9639 COMMON_INTERCEPT_FUNCTION(arc4random_buf); \
9640 COMMON_INTERCEPT_FUNCTION(arc4random_addrandom);
9641#else
9642#define INIT_ARC4RANDOM
9643#endif
9644
9645#if SANITIZER_INTERCEPT_POPEN
9646INTERCEPTOR(__sanitizer_FILE *, popen, const char *command, const char *type) {
9647 void *ctx;
9648 COMMON_INTERCEPTOR_ENTER(ctx, popen, command, type);
9649 if (command)
9650 COMMON_INTERCEPTOR_READ_RANGE(ctx, command, internal_strlen(command) + 1);
9651 if (type)
9652 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1);
9653 __sanitizer_FILE *res = REAL(popen)(command, type);
9654 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr);
9655 if (res) unpoison_file(fp: res);
9656 return res;
9657}
9658#define INIT_POPEN COMMON_INTERCEPT_FUNCTION(popen)
9659#else
9660#define INIT_POPEN
9661#endif
9662
9663#if SANITIZER_INTERCEPT_POPENVE
9664INTERCEPTOR(__sanitizer_FILE *, popenve, const char *path,
9665 char *const *argv, char *const *envp, const char *type) {
9666 void *ctx;
9667 COMMON_INTERCEPTOR_ENTER(ctx, popenve, path, argv, envp, type);
9668 if (path)
9669 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1);
9670 if (argv) {
9671 for (char *const *pa = argv; ; ++pa) {
9672 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **));
9673 if (!*pa)
9674 break;
9675 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1);
9676 }
9677 }
9678 if (envp) {
9679 for (char *const *pa = envp; ; ++pa) {
9680 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **));
9681 if (!*pa)
9682 break;
9683 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1);
9684 }
9685 }
9686 if (type)
9687 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1);
9688 __sanitizer_FILE *res = REAL(popenve)(path, argv, envp, type);
9689 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr);
9690 if (res) unpoison_file(res);
9691 return res;
9692}
9693#define INIT_POPENVE COMMON_INTERCEPT_FUNCTION(popenve)
9694#else
9695#define INIT_POPENVE
9696#endif
9697
9698#if SANITIZER_INTERCEPT_PCLOSE
9699INTERCEPTOR(int, pclose, __sanitizer_FILE *fp) {
9700 void *ctx;
9701 COMMON_INTERCEPTOR_ENTER(ctx, pclose, fp);
9702 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
9703 const FileMetadata *m = GetInterceptorMetadata(addr: fp);
9704 int res = REAL(pclose)(fp);
9705 if (m) {
9706 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
9707 DeleteInterceptorMetadata(addr: fp);
9708 }
9709 return res;
9710}
9711#define INIT_PCLOSE COMMON_INTERCEPT_FUNCTION(pclose);
9712#else
9713#define INIT_PCLOSE
9714#endif
9715
9716#if SANITIZER_INTERCEPT_FUNOPEN
9717typedef int (*funopen_readfn)(void *cookie, char *buf, int len);
9718typedef int (*funopen_writefn)(void *cookie, const char *buf, int len);
9719typedef OFF_T (*funopen_seekfn)(void *cookie, OFF_T offset, int whence);
9720typedef int (*funopen_closefn)(void *cookie);
9721
9722struct WrappedFunopenCookie {
9723 void *real_cookie;
9724 funopen_readfn real_read;
9725 funopen_writefn real_write;
9726 funopen_seekfn real_seek;
9727 funopen_closefn real_close;
9728};
9729
9730static int wrapped_funopen_read(void *cookie, char *buf, int len) {
9731 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9732 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9733 funopen_readfn real_read = wrapped_cookie->real_read;
9734 return real_read(wrapped_cookie->real_cookie, buf, len);
9735}
9736
9737static int wrapped_funopen_write(void *cookie, const char *buf, int len) {
9738 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9739 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9740 funopen_writefn real_write = wrapped_cookie->real_write;
9741 return real_write(wrapped_cookie->real_cookie, buf, len);
9742}
9743
9744static OFF_T wrapped_funopen_seek(void *cookie, OFF_T offset, int whence) {
9745 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9746 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9747 funopen_seekfn real_seek = wrapped_cookie->real_seek;
9748 return real_seek(wrapped_cookie->real_cookie, offset, whence);
9749}
9750
9751static int wrapped_funopen_close(void *cookie) {
9752 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
9753 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie;
9754 funopen_closefn real_close = wrapped_cookie->real_close;
9755 int res = real_close(wrapped_cookie->real_cookie);
9756 InternalFree(wrapped_cookie);
9757 return res;
9758}
9759
9760INTERCEPTOR(__sanitizer_FILE *, funopen, void *cookie, funopen_readfn readfn,
9761 funopen_writefn writefn, funopen_seekfn seekfn,
9762 funopen_closefn closefn) {
9763 void *ctx;
9764 COMMON_INTERCEPTOR_ENTER(ctx, funopen, cookie, readfn, writefn, seekfn,
9765 closefn);
9766
9767 WrappedFunopenCookie *wrapped_cookie =
9768 (WrappedFunopenCookie *)InternalAlloc(sizeof(WrappedFunopenCookie));
9769 wrapped_cookie->real_cookie = cookie;
9770 wrapped_cookie->real_read = readfn;
9771 wrapped_cookie->real_write = writefn;
9772 wrapped_cookie->real_seek = seekfn;
9773 wrapped_cookie->real_close = closefn;
9774
9775 __sanitizer_FILE *res =
9776 REAL(funopen)(wrapped_cookie,
9777 readfn ? wrapped_funopen_read : nullptr,
9778 writefn ? wrapped_funopen_write : nullptr,
9779 seekfn ? wrapped_funopen_seek : nullptr,
9780 closefn ? wrapped_funopen_close : nullptr);
9781 if (res)
9782 unpoison_file(res);
9783 return res;
9784}
9785#define INIT_FUNOPEN COMMON_INTERCEPT_FUNCTION(funopen)
9786#else
9787#define INIT_FUNOPEN
9788#endif
9789
9790#if SANITIZER_INTERCEPT_FUNOPEN2
9791typedef SSIZE_T (*funopen2_readfn)(void *cookie, void *buf, SIZE_T len);
9792typedef SSIZE_T (*funopen2_writefn)(void *cookie, const void *buf, SIZE_T len);
9793typedef OFF_T (*funopen2_seekfn)(void *cookie, OFF_T offset, int whence);
9794typedef int (*funopen2_flushfn)(void *cookie);
9795typedef int (*funopen2_closefn)(void *cookie);
9796
9797struct WrappedFunopen2Cookie {
9798 void *real_cookie;
9799 funopen2_readfn real_read;
9800 funopen2_writefn real_write;
9801 funopen2_seekfn real_seek;
9802 funopen2_flushfn real_flush;
9803 funopen2_closefn real_close;
9804};
9805
9806static SSIZE_T wrapped_funopen2_read(void *cookie, void *buf, SIZE_T len) {
9807 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9808 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9809 funopen2_readfn real_read = wrapped_cookie->real_read;
9810 return real_read(wrapped_cookie->real_cookie, buf, len);
9811}
9812
9813static SSIZE_T wrapped_funopen2_write(void *cookie, const void *buf,
9814 SIZE_T len) {
9815 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9816 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9817 funopen2_writefn real_write = wrapped_cookie->real_write;
9818 return real_write(wrapped_cookie->real_cookie, buf, len);
9819}
9820
9821static OFF_T wrapped_funopen2_seek(void *cookie, OFF_T offset, int whence) {
9822 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
9823 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9824 funopen2_seekfn real_seek = wrapped_cookie->real_seek;
9825 return real_seek(wrapped_cookie->real_cookie, offset, whence);
9826}
9827
9828static int wrapped_funopen2_flush(void *cookie) {
9829 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
9830 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9831 funopen2_flushfn real_flush = wrapped_cookie->real_flush;
9832 return real_flush(wrapped_cookie->real_cookie);
9833}
9834
9835static int wrapped_funopen2_close(void *cookie) {
9836 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
9837 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie;
9838 funopen2_closefn real_close = wrapped_cookie->real_close;
9839 int res = real_close(wrapped_cookie->real_cookie);
9840 InternalFree(wrapped_cookie);
9841 return res;
9842}
9843
9844INTERCEPTOR(__sanitizer_FILE *, funopen2, void *cookie, funopen2_readfn readfn,
9845 funopen2_writefn writefn, funopen2_seekfn seekfn,
9846 funopen2_flushfn flushfn, funopen2_closefn closefn) {
9847 void *ctx;
9848 COMMON_INTERCEPTOR_ENTER(ctx, funopen2, cookie, readfn, writefn, seekfn,
9849 flushfn, closefn);
9850
9851 WrappedFunopen2Cookie *wrapped_cookie =
9852 (WrappedFunopen2Cookie *)InternalAlloc(sizeof(WrappedFunopen2Cookie));
9853 wrapped_cookie->real_cookie = cookie;
9854 wrapped_cookie->real_read = readfn;
9855 wrapped_cookie->real_write = writefn;
9856 wrapped_cookie->real_seek = seekfn;
9857 wrapped_cookie->real_flush = flushfn;
9858 wrapped_cookie->real_close = closefn;
9859
9860 __sanitizer_FILE *res =
9861 REAL(funopen2)(wrapped_cookie,
9862 readfn ? wrapped_funopen2_read : nullptr,
9863 writefn ? wrapped_funopen2_write : nullptr,
9864 seekfn ? wrapped_funopen2_seek : nullptr,
9865 flushfn ? wrapped_funopen2_flush : nullptr,
9866 closefn ? wrapped_funopen2_close : nullptr);
9867 if (res)
9868 unpoison_file(res);
9869 return res;
9870}
9871#define INIT_FUNOPEN2 COMMON_INTERCEPT_FUNCTION(funopen2)
9872#else
9873#define INIT_FUNOPEN2
9874#endif
9875
9876#if SANITIZER_INTERCEPT_FDEVNAME
9877INTERCEPTOR(char *, fdevname, int fd) {
9878 void *ctx;
9879 COMMON_INTERCEPTOR_ENTER(ctx, fdevname, fd);
9880 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
9881 char *name = REAL(fdevname)(fd);
9882 if (name) {
9883 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1);
9884 if (fd > 0)
9885 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
9886 }
9887 return name;
9888}
9889
9890INTERCEPTOR(char *, fdevname_r, int fd, char *buf, SIZE_T len) {
9891 void *ctx;
9892 COMMON_INTERCEPTOR_ENTER(ctx, fdevname_r, fd, buf, len);
9893 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
9894 char *name = REAL(fdevname_r)(fd, buf, len);
9895 if (name && buf && len > 0) {
9896 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1);
9897 if (fd > 0)
9898 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
9899 }
9900 return name;
9901}
9902
9903#define INIT_FDEVNAME \
9904 COMMON_INTERCEPT_FUNCTION(fdevname); \
9905 COMMON_INTERCEPT_FUNCTION(fdevname_r);
9906#else
9907#define INIT_FDEVNAME
9908#endif
9909
9910#if SANITIZER_INTERCEPT_GETUSERSHELL
9911INTERCEPTOR(char *, getusershell,) {
9912 void *ctx;
9913 COMMON_INTERCEPTOR_ENTER(ctx, getusershell,);
9914 char *res = REAL(getusershell)();
9915 if (res)
9916 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
9917 return res;
9918}
9919
9920#define INIT_GETUSERSHELL COMMON_INTERCEPT_FUNCTION(getusershell);
9921#else
9922#define INIT_GETUSERSHELL
9923#endif
9924
9925#if SANITIZER_INTERCEPT_SL_INIT
9926INTERCEPTOR(void *, sl_init) {
9927 void *ctx;
9928 COMMON_INTERCEPTOR_ENTER(ctx, sl_init);
9929 void *res = REAL(sl_init)();
9930 if (res)
9931 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_StringList_sz);
9932 return res;
9933}
9934
9935INTERCEPTOR(int, sl_add, void *sl, char *item) {
9936 void *ctx;
9937 COMMON_INTERCEPTOR_ENTER(ctx, sl_add, sl, item);
9938 if (sl)
9939 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9940 if (item)
9941 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1);
9942 int res = REAL(sl_add)(sl, item);
9943 if (!res)
9944 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9945 return res;
9946}
9947
9948INTERCEPTOR(char *, sl_find, void *sl, const char *item) {
9949 void *ctx;
9950 COMMON_INTERCEPTOR_ENTER(ctx, sl_find, sl, item);
9951 if (sl)
9952 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9953 if (item)
9954 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1);
9955 char *res = REAL(sl_find)(sl, item);
9956 if (res)
9957 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1);
9958 return res;
9959}
9960
9961INTERCEPTOR(void, sl_free, void *sl, int freeall) {
9962 void *ctx;
9963 COMMON_INTERCEPTOR_ENTER(ctx, sl_free, sl, freeall);
9964 if (sl)
9965 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz);
9966 REAL(sl_free)(sl, freeall);
9967}
9968
9969#define INIT_SL_INIT \
9970 COMMON_INTERCEPT_FUNCTION(sl_init); \
9971 COMMON_INTERCEPT_FUNCTION(sl_add); \
9972 COMMON_INTERCEPT_FUNCTION(sl_find); \
9973 COMMON_INTERCEPT_FUNCTION(sl_free);
9974#else
9975#define INIT_SL_INIT
9976#endif
9977
9978#if SANITIZER_INTERCEPT_GETRANDOM
9979INTERCEPTOR(SSIZE_T, getrandom, void *buf, SIZE_T buflen, unsigned int flags) {
9980 void *ctx;
9981 COMMON_INTERCEPTOR_ENTER(ctx, getrandom, buf, buflen, flags);
9982 // If GRND_NONBLOCK is set in the flags, it is non blocking.
9983 static const int grnd_nonblock = 1;
9984 SSIZE_T n;
9985 if ((flags & grnd_nonblock))
9986 n = REAL(getrandom)(buf, buflen, flags);
9987 else
9988 n = COMMON_INTERCEPTOR_BLOCK_REAL(getrandom)(buf, buflen, flags);
9989 if (n > 0) {
9990 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, n);
9991 }
9992 return n;
9993}
9994#define INIT_GETRANDOM COMMON_INTERCEPT_FUNCTION(getrandom)
9995#else
9996#define INIT_GETRANDOM
9997#endif
9998
9999#if SANITIZER_INTERCEPT_GETENTROPY
10000INTERCEPTOR(int, getentropy, void *buf, SIZE_T buflen) {
10001 void *ctx;
10002 COMMON_INTERCEPTOR_ENTER(ctx, getentropy, buf, buflen);
10003 int r = REAL(getentropy)(buf, buflen);
10004 if (r == 0) {
10005 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
10006 }
10007 return r;
10008}
10009#define INIT_GETENTROPY COMMON_INTERCEPT_FUNCTION(getentropy)
10010#else
10011#define INIT_GETENTROPY
10012#endif
10013
10014#if SANITIZER_INTERCEPT_QSORT_R
10015typedef int (*qsort_r_compar_f)(const void *, const void *, void *);
10016struct qsort_r_compar_params {
10017 SIZE_T size;
10018 qsort_r_compar_f compar;
10019 void *arg;
10020};
10021static int wrapped_qsort_r_compar(const void *a, const void *b, void *arg) {
10022 qsort_r_compar_params *params = (qsort_r_compar_params *)arg;
10023 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
10024 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, params->size);
10025 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, params->size);
10026 return params->compar(a, b, params->arg);
10027}
10028
10029INTERCEPTOR(void, qsort_r, void *base, SIZE_T nmemb, SIZE_T size,
10030 qsort_r_compar_f compar, void *arg) {
10031 void *ctx;
10032 COMMON_INTERCEPTOR_ENTER(ctx, qsort_r, base, nmemb, size, compar, arg);
10033 // Run the comparator over all array elements to detect any memory issues.
10034 if (nmemb > 1) {
10035 for (SIZE_T i = 0; i < nmemb - 1; ++i) {
10036 void *p = (void *)((char *)base + i * size);
10037 void *q = (void *)((char *)base + (i + 1) * size);
10038 COMMON_INTERCEPTOR_UNPOISON_PARAM(3);
10039 compar(p, q, arg);
10040 }
10041 }
10042 qsort_r_compar_params params = {.size: size, .compar: compar, .arg: arg};
10043 REAL(qsort_r)(base, nmemb, size, wrapped_qsort_r_compar, &params);
10044 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size);
10045}
10046# define INIT_QSORT_R COMMON_INTERCEPT_FUNCTION(qsort_r)
10047#else
10048# define INIT_QSORT_R
10049#endif
10050
10051#if SANITIZER_INTERCEPT_QSORT && SANITIZER_INTERCEPT_QSORT_R
10052INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size,
10053 qsort_r_compar_f compar) {
10054 void *ctx;
10055 COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar);
10056 WRAP(qsort_r)(base, nmemb, size, compar, arg: nullptr);
10057}
10058# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort)
10059#elif SANITIZER_INTERCEPT_QSORT && !SANITIZER_INTERCEPT_QSORT_R
10060// Glibc qsort uses a temporary buffer allocated either on stack or on heap.
10061// Poisoned memory from there may get copied into the comparator arguments,
10062// where it needs to be dealt with. But even that is not enough - the results of
10063// the sort may be copied into the input/output array based on the results of
10064// the comparator calls, but directly from the temp memory, bypassing the
10065// unpoisoning done in wrapped_qsort_compar. We deal with this by, again,
10066// unpoisoning the entire array after the sort is done.
10067//
10068// We can not check that the entire array is initialized at the beginning. IMHO,
10069// it's fine for parts of the sorted objects to contain uninitialized memory,
10070// ex. as padding in structs.
10071typedef int (*qsort_compar_f)(const void *, const void *);
10072static THREADLOCAL qsort_compar_f qsort_compar;
10073static THREADLOCAL SIZE_T qsort_size;
10074static int wrapped_qsort_compar(const void *a, const void *b) {
10075 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
10076 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, qsort_size);
10077 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, qsort_size);
10078 return qsort_compar(a, b);
10079}
10080
10081INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size,
10082 qsort_compar_f compar) {
10083 void *ctx;
10084 COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar);
10085 // Run the comparator over all array elements to detect any memory issues.
10086 if (nmemb > 1) {
10087 for (SIZE_T i = 0; i < nmemb - 1; ++i) {
10088 void *p = (void *)((char *)base + i * size);
10089 void *q = (void *)((char *)base + (i + 1) * size);
10090 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
10091 compar(p, q);
10092 }
10093 }
10094 qsort_compar_f old_compar = qsort_compar;
10095 SIZE_T old_size = qsort_size;
10096 // Handle qsort() implementations that recurse using an
10097 // interposable function call:
10098 bool already_wrapped = compar == wrapped_qsort_compar;
10099 if (already_wrapped) {
10100 // This case should only happen if the qsort() implementation calls itself
10101 // using a preemptible function call (e.g. the FreeBSD libc version).
10102 // Check that the size and comparator arguments are as expected.
10103 CHECK_NE(compar, qsort_compar);
10104 CHECK_EQ(qsort_size, size);
10105 } else {
10106 qsort_compar = compar;
10107 qsort_size = size;
10108 }
10109 REAL(qsort)(base, nmemb, size, wrapped_qsort_compar);
10110 if (!already_wrapped) {
10111 qsort_compar = old_compar;
10112 qsort_size = old_size;
10113 }
10114 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size);
10115}
10116# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort)
10117#else
10118# define INIT_QSORT
10119#endif
10120
10121#if SANITIZER_INTERCEPT_BSEARCH
10122typedef int (*bsearch_compar_f)(const void *, const void *);
10123struct bsearch_compar_params {
10124 const void *key;
10125 bsearch_compar_f compar;
10126};
10127
10128static int wrapped_bsearch_compar(const void *key, const void *b) {
10129 const bsearch_compar_params *params = (const bsearch_compar_params *)key;
10130 COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
10131 return params->compar(params->key, b);
10132}
10133
10134INTERCEPTOR(void *, bsearch, const void *key, const void *base, SIZE_T nmemb,
10135 SIZE_T size, bsearch_compar_f compar) {
10136 void *ctx;
10137 COMMON_INTERCEPTOR_ENTER(ctx, bsearch, key, base, nmemb, size, compar);
10138 bsearch_compar_params params = {.key: key, .compar: compar};
10139 return REAL(bsearch)(&params, base, nmemb, size, wrapped_bsearch_compar);
10140}
10141# define INIT_BSEARCH COMMON_INTERCEPT_FUNCTION(bsearch)
10142#else
10143# define INIT_BSEARCH
10144#endif
10145
10146#if SANITIZER_INTERCEPT_SIGALTSTACK
10147INTERCEPTOR(int, sigaltstack, void *ss, void *oss) {
10148 void *ctx;
10149 COMMON_INTERCEPTOR_ENTER(ctx, sigaltstack, ss, oss);
10150 int r = REAL(sigaltstack)(ss, oss);
10151 if (r == 0 && oss != nullptr) {
10152 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oss, struct_stack_t_sz);
10153 }
10154 return r;
10155}
10156#define INIT_SIGALTSTACK COMMON_INTERCEPT_FUNCTION(sigaltstack)
10157#else
10158#define INIT_SIGALTSTACK
10159#endif
10160
10161#if SANITIZER_INTERCEPT_PROCCTL
10162INTERCEPTOR(int, procctl, int idtype, u64 id, int cmd, uptr data) {
10163 void *ctx;
10164 COMMON_INTERCEPTOR_ENTER(ctx, procctl, idtype, id, cmd, data);
10165 static const int PROC_REAP_ACQUIRE = 2;
10166 static const int PROC_REAP_RELEASE = 3;
10167 static const int PROC_REAP_STATUS = 4;
10168 static const int PROC_REAP_GETPIDS = 5;
10169 static const int PROC_REAP_KILL = 6;
10170 if (cmd < PROC_REAP_ACQUIRE || cmd > PROC_REAP_KILL) {
10171 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, sizeof(int));
10172 } else {
10173 // reap_acquire/reap_release bears no arguments.
10174 if (cmd > PROC_REAP_RELEASE) {
10175 unsigned int reapsz;
10176 switch (cmd) {
10177 case PROC_REAP_STATUS:
10178 reapsz = struct_procctl_reaper_status_sz;
10179 break;
10180 case PROC_REAP_GETPIDS:
10181 reapsz = struct_procctl_reaper_pids_sz;
10182 break;
10183 case PROC_REAP_KILL:
10184 reapsz = struct_procctl_reaper_kill_sz;
10185 break;
10186 }
10187 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, reapsz);
10188 }
10189 }
10190 return REAL(procctl)(idtype, id, cmd, data);
10191}
10192#define INIT_PROCCTL COMMON_INTERCEPT_FUNCTION(procctl)
10193#else
10194#define INIT_PROCCTL
10195#endif
10196
10197#if SANITIZER_INTERCEPT_UNAME
10198INTERCEPTOR(int, uname, struct utsname *utsname) {
10199#if SANITIZER_LINUX
10200 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
10201 return internal_uname(buf: utsname);
10202#endif
10203 void *ctx;
10204 COMMON_INTERCEPTOR_ENTER(ctx, uname, utsname);
10205 int res = REAL(uname)(utsname);
10206 if (!res)
10207 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname,
10208 __sanitizer::struct_utsname_sz);
10209 return res;
10210}
10211#define INIT_UNAME COMMON_INTERCEPT_FUNCTION(uname)
10212#else
10213#define INIT_UNAME
10214#endif
10215
10216#if SANITIZER_INTERCEPT___XUNAME
10217// FreeBSD's <sys/utsname.h> define uname() as
10218// static __inline int uname(struct utsname *name) {
10219// return __xuname(SYS_NMLN, (void*)name);
10220// }
10221INTERCEPTOR(int, __xuname, int size, void *utsname) {
10222 void *ctx;
10223 COMMON_INTERCEPTOR_ENTER(ctx, __xuname, size, utsname);
10224 int res = REAL(__xuname)(size, utsname);
10225 if (!res)
10226 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname,
10227 __sanitizer::struct_utsname_sz);
10228 return res;
10229}
10230#define INIT___XUNAME COMMON_INTERCEPT_FUNCTION(__xuname)
10231#else
10232#define INIT___XUNAME
10233#endif
10234
10235#if SANITIZER_INTERCEPT_ARGP_PARSE
10236INTERCEPTOR(int, argp_parse, const struct argp *argp, int argc, char **argv,
10237 unsigned flags, int *arg_index, void *input) {
10238 void *ctx;
10239 COMMON_INTERCEPTOR_ENTER(ctx, argp_parse, argp, argc, argv, flags, arg_index,
10240 input);
10241 for (int i = 0; i < argc; i++)
10242 COMMON_INTERCEPTOR_READ_RANGE(ctx, argv[i], internal_strlen(argv[i]) + 1);
10243 int res = REAL(argp_parse)(argp, argc, argv, flags, arg_index, input);
10244 if (!res && arg_index)
10245 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, arg_index, sizeof(int));
10246 return res;
10247}
10248
10249#define INIT_ARGP_PARSE COMMON_INTERCEPT_FUNCTION(argp_parse);
10250#else
10251#define INIT_ARGP_PARSE
10252#endif
10253
10254#if SANITIZER_INTERCEPT_CPUSET_GETAFFINITY
10255INTERCEPTOR(int, cpuset_getaffinity, int level, int which, __int64_t id, SIZE_T cpusetsize, __sanitizer_cpuset_t *mask) {
10256 void *ctx;
10257 COMMON_INTERCEPTOR_ENTER(ctx, cpuset_getaffinity, level, which, id, cpusetsize, mask);
10258 int res = REAL(cpuset_getaffinity)(level, which, id, cpusetsize, mask);
10259 if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize);
10260 return res;
10261}
10262#define INIT_CPUSET_GETAFFINITY COMMON_INTERCEPT_FUNCTION(cpuset_getaffinity);
10263#else
10264#define INIT_CPUSET_GETAFFINITY
10265#endif
10266
10267#if SANITIZER_INTERCEPT_PREADV2
10268INTERCEPTOR(SSIZE_T, preadv2, int fd, __sanitizer_iovec *iov, int iovcnt,
10269 OFF_T offset, int flags) {
10270 void *ctx;
10271 COMMON_INTERCEPTOR_ENTER(ctx, preadv2, fd, iov, iovcnt, offset, flags);
10272 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
10273 SSIZE_T res = REAL(preadv2)(fd, iov, iovcnt, offset, flags);
10274 if (res > 0) write_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
10275 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
10276 return res;
10277}
10278#define INIT_PREADV2 COMMON_INTERCEPT_FUNCTION(preadv2)
10279#else
10280#define INIT_PREADV2
10281#endif
10282
10283#if SANITIZER_INTERCEPT_PWRITEV2
10284INTERCEPTOR(SSIZE_T, pwritev2, int fd, __sanitizer_iovec *iov, int iovcnt,
10285 OFF_T offset, int flags) {
10286 void *ctx;
10287 COMMON_INTERCEPTOR_ENTER(ctx, pwritev2, fd, iov, iovcnt, offset, flags);
10288 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
10289 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
10290 SSIZE_T res = REAL(pwritev2)(fd, iov, iovcnt, offset, flags);
10291 if (res > 0) read_iovec(ctx, iovec: iov, iovlen: iovcnt, maxlen: res);
10292 return res;
10293}
10294#define INIT_PWRITEV2 COMMON_INTERCEPT_FUNCTION(pwritev2)
10295#else
10296#define INIT_PWRITEV2
10297#endif
10298
10299#include "sanitizer_common_interceptors_netbsd_compat.inc"
10300
10301namespace __sanitizer {
10302void InitializeMemintrinsicInterceptors();
10303} // namespace __sanitizer
10304
10305static void InitializeCommonInterceptors() {
10306#if SI_POSIX
10307 static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
10308 interceptor_metadata_map = new ((void *)&metadata_mem) MetadataHashMap();
10309#endif
10310
10311 __sanitizer::InitializeMemintrinsicInterceptors();
10312
10313 INIT_MMAP;
10314 INIT_MMAP64;
10315 INIT_TEXTDOMAIN;
10316 INIT_STRLEN;
10317 INIT_STRNLEN;
10318 INIT_STRNDUP;
10319 INIT___STRNDUP;
10320 INIT_STRCMP;
10321 INIT_STRNCMP;
10322 INIT_STRCASECMP;
10323 INIT_STRNCASECMP;
10324 INIT_STRSTR;
10325 INIT_STRCASESTR;
10326 INIT_STRCHR;
10327 INIT_STRCHRNUL;
10328 INIT_STRRCHR;
10329 INIT_STRSPN;
10330 INIT_STRTOK;
10331 INIT_STRPBRK;
10332 INIT_STRXFRM;
10333 INIT___STRXFRM_L;
10334 INIT_MEMCHR;
10335 INIT_MEMCMP;
10336 INIT_BCMP;
10337 INIT_MEMRCHR;
10338 INIT_MEMMEM;
10339 INIT_READ;
10340 INIT_FREAD;
10341 INIT_PREAD;
10342 INIT_PREAD64;
10343 INIT_READV;
10344 INIT_PREADV;
10345 INIT_PREADV64;
10346 INIT_WRITE;
10347 INIT_FWRITE;
10348 INIT_PWRITE;
10349 INIT_PWRITE64;
10350 INIT_WRITEV;
10351 INIT_PWRITEV;
10352 INIT_PWRITEV64;
10353 INIT_FGETS;
10354 INIT_FPUTS;
10355 INIT_PUTS;
10356 INIT_PRCTL;
10357 INIT_LOCALTIME_AND_FRIENDS;
10358 INIT_STRPTIME;
10359 INIT_SCANF;
10360 INIT_ISOC99_SCANF;
10361 INIT_PRINTF;
10362 INIT_PRINTF_L;
10363 INIT_ISOC99_PRINTF;
10364 INIT_FREXP;
10365 INIT_FREXPF_FREXPL;
10366 INIT_GETPWNAM_AND_FRIENDS;
10367 INIT_GETPWNAM_R_AND_FRIENDS;
10368 INIT_GETPWENT;
10369 INIT_FGETPWENT;
10370 INIT_GETPWENT_R;
10371 INIT_FGETPWENT_R;
10372 INIT_FGETGRENT_R;
10373 INIT_SETPWENT;
10374 INIT_CLOCK_GETTIME;
10375 INIT_CLOCK_GETCPUCLOCKID;
10376 INIT_GETITIMER;
10377 INIT_TIME;
10378 INIT_GLOB;
10379 INIT_GLOB64;
10380 INIT___B64_TO;
10381 INIT_DN_COMP_EXPAND;
10382 INIT_POSIX_SPAWN;
10383 INIT_WAIT;
10384 INIT_WAIT4;
10385 INIT_INET;
10386 INIT_PTHREAD_GETSCHEDPARAM;
10387 INIT_GETADDRINFO;
10388 INIT_GETNAMEINFO;
10389 INIT_GETSOCKNAME;
10390 INIT_GETHOSTBYNAME;
10391 INIT_GETHOSTBYNAME2;
10392 INIT_GETHOSTBYNAME_R;
10393 INIT_GETHOSTBYNAME2_R;
10394 INIT_GETHOSTBYADDR_R;
10395 INIT_GETHOSTENT_R;
10396 INIT_GETSOCKOPT;
10397 INIT_ACCEPT;
10398 INIT_ACCEPT4;
10399 INIT_PACCEPT;
10400 INIT_MODF;
10401 INIT_RECVMSG;
10402 INIT_SENDMSG;
10403 INIT_RECVMMSG;
10404 INIT_SENDMMSG;
10405 INIT_SYSMSG;
10406 INIT_GETPEERNAME;
10407 INIT_IOCTL;
10408 INIT_INET_ATON;
10409 INIT_SYSINFO;
10410 INIT_READDIR;
10411 INIT_READDIR64;
10412 INIT_PTRACE;
10413 INIT_SETLOCALE;
10414 INIT_GETCWD;
10415 INIT_GET_CURRENT_DIR_NAME;
10416 INIT_STRTOIMAX;
10417 INIT_STRTOIMAX_C23;
10418 INIT_MBSTOWCS;
10419 INIT_MBSNRTOWCS;
10420 INIT_WCSTOMBS;
10421 INIT_WCSNRTOMBS;
10422 INIT_WCRTOMB;
10423 INIT_WCTOMB;
10424 INIT_TCGETATTR;
10425 INIT_REALPATH;
10426 INIT_CANONICALIZE_FILE_NAME;
10427 INIT_CONFSTR;
10428 INIT_SCHED_GETAFFINITY;
10429 INIT_SCHED_GETPARAM;
10430 INIT_STRERROR;
10431 INIT_STRERROR_R;
10432 INIT_XPG_STRERROR_R;
10433 INIT_SCANDIR;
10434 INIT_SCANDIR64;
10435 INIT_GETGROUPS;
10436 INIT_POLL;
10437 INIT_PPOLL;
10438 INIT_WORDEXP;
10439 INIT_SIGWAIT;
10440 INIT_SIGWAITINFO;
10441 INIT_SIGTIMEDWAIT;
10442 INIT_SIGSETOPS;
10443 INIT_SIGSET_LOGICOPS;
10444 INIT_SIGPENDING;
10445 INIT_SIGPROCMASK;
10446 INIT_PTHREAD_SIGMASK;
10447 INIT_BACKTRACE;
10448 INIT__EXIT;
10449 INIT___LIBC_THR_SETCANCELSTATE;
10450 INIT_GETMNTENT;
10451 INIT_GETMNTENT_R;
10452 INIT_STATFS;
10453 INIT_STATFS64;
10454 INIT_STATVFS;
10455 INIT_STATVFS64;
10456 INIT_INITGROUPS;
10457 INIT_ETHER_NTOA_ATON;
10458 INIT_ETHER_HOST;
10459 INIT_ETHER_R;
10460 INIT_SHMCTL;
10461 INIT_RANDOM_R;
10462 INIT_PTHREAD_ATTR_GET;
10463 INIT_PTHREAD_ATTR_GET_SCHED;
10464 INIT_PTHREAD_ATTR_GETINHERITSCHED;
10465 INIT_PTHREAD_ATTR_GETAFFINITY_NP;
10466 INIT_PTHREAD_GETAFFINITY_NP;
10467 INIT_PTHREAD_MUTEXATTR_GETPSHARED;
10468 INIT_PTHREAD_MUTEXATTR_GETTYPE;
10469 INIT_PTHREAD_MUTEXATTR_GETPROTOCOL;
10470 INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING;
10471 INIT_PTHREAD_MUTEXATTR_GETROBUST;
10472 INIT_PTHREAD_MUTEXATTR_GETROBUST_NP;
10473 INIT_PTHREAD_RWLOCKATTR_GETPSHARED;
10474 INIT_PTHREAD_RWLOCKATTR_GETKIND_NP;
10475 INIT_PTHREAD_CONDATTR_GETPSHARED;
10476 INIT_PTHREAD_CONDATTR_GETCLOCK;
10477 INIT_PTHREAD_BARRIERATTR_GETPSHARED;
10478 INIT_TMPNAM;
10479 INIT_TMPNAM_R;
10480 INIT_PTSNAME;
10481 INIT_PTSNAME_R;
10482 INIT_TTYNAME;
10483 INIT_TTYNAME_R;
10484 INIT_TEMPNAM;
10485 INIT_PTHREAD_SETNAME_NP;
10486 INIT_PTHREAD_GETNAME_NP;
10487 INIT_SINCOS;
10488 INIT_REMQUO;
10489 INIT_REMQUOL;
10490 INIT_LGAMMA;
10491 INIT_LGAMMAL;
10492 INIT_LGAMMA_R;
10493 INIT_LGAMMAL_R;
10494 INIT_DRAND48_R;
10495 INIT_RAND_R;
10496 INIT_GETLINE;
10497 INIT_ICONV;
10498 INIT_TIMES;
10499 INIT_TLS_GET_ADDR;
10500 INIT_LISTXATTR;
10501 INIT_GETXATTR;
10502 INIT_GETRESID;
10503 INIT_GETIFADDRS;
10504 INIT_IF_INDEXTONAME;
10505 INIT_CAPGET;
10506 INIT_FTIME;
10507 INIT_XDR;
10508 INIT_XDRREC_LINUX;
10509 INIT_TSEARCH;
10510 INIT_LIBIO_INTERNALS;
10511 INIT_FOPEN;
10512 INIT_FOPEN64;
10513 INIT_FLOPEN;
10514 INIT_OPEN_MEMSTREAM;
10515 INIT_OBSTACK;
10516 INIT_FFLUSH;
10517 INIT_FCLOSE;
10518 INIT_DLOPEN_DLCLOSE;
10519 INIT_GETPASS;
10520 INIT_TIMERFD;
10521 INIT_MLOCKX;
10522 INIT_FOPENCOOKIE;
10523 INIT_SEM;
10524 INIT_PTHREAD_SETCANCEL;
10525 INIT_MINCORE;
10526 INIT_PROCESS_VM_READV;
10527 INIT_CTERMID;
10528 INIT_CTERMID_R;
10529 INIT_RECV_RECVFROM;
10530 INIT_SEND_SENDTO;
10531 INIT_STAT;
10532 INIT_STAT64;
10533 INIT_EVENTFD_READ_WRITE;
10534 INIT_LSTAT;
10535 INIT_LSTAT64;
10536 INIT___XSTAT;
10537 INIT___XSTAT64;
10538 INIT___LXSTAT;
10539 INIT___LXSTAT64;
10540 // FIXME: add other *stat interceptors.
10541 INIT_UTMP;
10542 INIT_UTMPX;
10543 INIT_GETLOADAVG;
10544 INIT_WCSLEN;
10545 INIT_WCSCAT;
10546 INIT_WCSDUP;
10547 INIT_WCSXFRM;
10548 INIT___WCSXFRM_L;
10549 INIT_ACCT;
10550 INIT_USER_FROM_UID;
10551 INIT_UID_FROM_USER;
10552 INIT_GROUP_FROM_GID;
10553 INIT_GID_FROM_GROUP;
10554 INIT_ACCESS;
10555 INIT_FACCESSAT;
10556 INIT_GETGROUPLIST;
10557 INIT_GETGROUPMEMBERSHIP;
10558 INIT_READLINK;
10559 INIT_READLINKAT;
10560 INIT_NAME_TO_HANDLE_AT;
10561 INIT_OPEN_BY_HANDLE_AT;
10562 INIT_STRLCPY;
10563 INIT_DEVNAME;
10564 INIT_DEVNAME_R;
10565 INIT_FGETLN;
10566 INIT_STRMODE;
10567 INIT_TTYENT;
10568 INIT_PROTOENT;
10569 INIT_PROTOENT_R;
10570 INIT_NETENT;
10571 INIT_GETMNTINFO;
10572 INIT_MI_VECTOR_HASH;
10573 INIT_SETVBUF;
10574 INIT_GETVFSSTAT;
10575 INIT_REGEX;
10576 INIT_REGEXSUB;
10577 INIT_FTS;
10578 INIT_SYSCTL;
10579 INIT_ASYSCTL;
10580 INIT_SYSCTLGETMIBINFO;
10581 INIT_NL_LANGINFO;
10582 INIT_MODCTL;
10583 INIT_STRTONUM;
10584 INIT_FPARSELN;
10585 INIT_STATVFS1;
10586 INIT_STRTOI;
10587 INIT_CAPSICUM;
10588 INIT_SHA1;
10589 INIT_MD4;
10590 INIT_RMD160;
10591 INIT_MD5;
10592 INIT_FSEEK;
10593 INIT_MD2;
10594 INIT_SHA2;
10595 INIT_VIS;
10596 INIT_CDB;
10597 INIT_GETFSENT;
10598 INIT_ARC4RANDOM;
10599 INIT_POPEN;
10600 INIT_POPENVE;
10601 INIT_PCLOSE;
10602 INIT_FUNOPEN;
10603 INIT_FUNOPEN2;
10604 INIT_FDEVNAME;
10605 INIT_GETUSERSHELL;
10606 INIT_SL_INIT;
10607 INIT_GETRANDOM;
10608 INIT_GETENTROPY;
10609 INIT_QSORT;
10610 INIT_QSORT_R;
10611 INIT_BSEARCH;
10612 INIT_SIGALTSTACK;
10613 INIT_PROCCTL
10614 INIT_UNAME;
10615 INIT___XUNAME;
10616 INIT_ARGP_PARSE;
10617 INIT_CPUSET_GETAFFINITY;
10618 INIT_PREADV2;
10619 INIT_PWRITEV2;
10620
10621 INIT___PRINTF_CHK;
10622}
10623