1//===-- sanitizer_haiku.cpp -----------------------------------------------===//
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// This file is shared between Sanitizer run-time libraries and implements
10// Haiku-specific functions from sanitizer_libc.h.
11//===----------------------------------------------------------------------===//
12
13#include "sanitizer_platform.h"
14
15#if SANITIZER_HAIKU
16
17# include "sanitizer_common.h"
18# include "sanitizer_flags.h"
19# include "sanitizer_getauxval.h"
20# include "sanitizer_internal_defs.h"
21# include "sanitizer_libc.h"
22# include "sanitizer_linux.h"
23# include "sanitizer_mutex.h"
24# include "sanitizer_placement_new.h"
25# include "sanitizer_procmaps.h"
26
27# include <sys/param.h>
28# include <sys/types.h>
29
30# include <sys/mman.h>
31# include <sys/resource.h>
32# include <sys/stat.h>
33# include <sys/time.h>
34
35# include <dlfcn.h>
36# include <errno.h>
37# include <fcntl.h>
38# include <limits.h>
39# include <link.h>
40# include <pthread.h>
41# include <sched.h>
42# include <signal.h>
43# include <unistd.h>
44
45# include "system/vm_defs.h"
46# include "system/syscalls.h"
47# include "shared/syscall_utils.h"
48
49namespace __sanitizer {
50
51static void *GetRealLibcAddress(const char *symbol) {
52 void *real = dlsym(RTLD_NEXT, symbol);
53 if (!real)
54 real = dlsym(RTLD_DEFAULT, symbol);
55 if (!real) {
56 Printf("GetRealLibcAddress failed for symbol=%s", symbol);
57 Die();
58 }
59 return real;
60}
61
62# define _REAL(func, ...) real##_##func(__VA_ARGS__)
63# define DEFINE__REAL(ret_type, func, ...) \
64 static ret_type (*real_##func)(__VA_ARGS__) = NULL; \
65 if (!real_##func) { \
66 real_##func = (ret_type(*)(__VA_ARGS__))GetRealLibcAddress(#func); \
67 } \
68 CHECK(real_##func);
69
70// --------------- sanitizer_libc.h
71uptr internal_mmap(void *addr, uptr length, int prot, int flags, int fd,
72 u64 offset) {
73 if ((flags & MAP_ANONYMOUS) != 0)
74 fd = -1;
75
76 int mapping =
77 (flags & MAP_SHARED) != 0 ? REGION_NO_PRIVATE_MAP : REGION_PRIVATE_MAP;
78
79 uint32 addressSpec;
80 if ((flags & MAP_FIXED) != 0)
81 addressSpec = B_EXACT_ADDRESS;
82 else if (addr != NULL)
83 addressSpec = B_BASE_ADDRESS;
84 else
85 addressSpec = B_RANDOMIZED_ANY_ADDRESS;
86
87 uint32 areaProtection = 0;
88 if ((prot & PROT_READ) != 0)
89 areaProtection |= B_READ_AREA;
90 if ((prot & PROT_WRITE) != 0)
91 areaProtection |= B_WRITE_AREA;
92 if ((prot & PROT_EXEC) != 0)
93 areaProtection |= B_EXECUTE_AREA;
94
95 if ((flags & MAP_NORESERVE) != 0)
96 areaProtection |= B_OVERCOMMITTING_AREA;
97
98 area_id area = _kern_map_file("sanitizer mmap", &addr, addressSpec, length,
99 areaProtection, mapping, true, fd, offset);
100 if (area < 0)
101 RETURN_AND_SET_ERRNO(area);
102 return (uptr)addr;
103}
104
105uptr internal_munmap(void *addr, uptr length) {
106 DEFINE__REAL(int, munmap, void *a, uptr b);
107 return _REAL(munmap, addr, length);
108}
109
110uptr internal_mremap(void *old_address, uptr old_size, uptr new_size, int flags,
111 void *new_address) {
112 CHECK(false && "internal_mremap is unimplemented on Haiku");
113 return 0;
114}
115
116int internal_mprotect(void *addr, uptr length, int prot) {
117 DEFINE__REAL(int, mprotect, void *a, uptr b, int c);
118 return _REAL(mprotect, addr, length, prot);
119}
120
121int internal_madvise(uptr addr, uptr length, int advice) {
122 DEFINE__REAL(int, madvise, void *a, uptr b, int c);
123 return _REAL(madvise, (void *)addr, length, advice);
124}
125
126uptr internal_close(fd_t fd) {
127 CHECK(&_kern_close);
128 RETURN_AND_SET_ERRNO(_kern_close(fd));
129}
130
131uptr internal_open(const char *filename, int flags) {
132 CHECK(&_kern_open);
133 RETURN_AND_SET_ERRNO(_kern_open(-1, filename, flags, 0));
134}
135
136uptr internal_open(const char *filename, int flags, u32 mode) {
137 CHECK(&_kern_open);
138 RETURN_AND_SET_ERRNO(_kern_open(-1, filename, flags, mode));
139}
140
141uptr internal_read(fd_t fd, void *buf, uptr count) {
142 sptr res;
143 CHECK(&_kern_read);
144 HANDLE_EINTR(res, (sptr)_kern_read(fd, -1, buf, (size_t)count));
145 RETURN_AND_SET_ERRNO(res);
146 return res;
147}
148
149uptr internal_write(fd_t fd, const void *buf, uptr count) {
150 sptr res;
151 CHECK(&_kern_write);
152 HANDLE_EINTR(res, (sptr)_kern_write(fd, -1, buf, count));
153 RETURN_AND_SET_ERRNO(res);
154 return res;
155}
156
157uptr internal_ftruncate(fd_t fd, uptr size) {
158 sptr res;
159 DEFINE__REAL(int, ftruncate, int, off_t);
160 return _REAL(ftruncate, fd, size);
161 return res;
162}
163
164uptr internal_stat(const char *path, void *buf) {
165 DEFINE__REAL(int, _stat_current, const char *a, void *b);
166 return _REAL(_stat_current, path, buf);
167}
168
169uptr internal_lstat(const char *path, void *buf) {
170 DEFINE__REAL(int, _lstat_current, const char *a, void *b);
171 return _REAL(_lstat_current, path, buf);
172}
173
174uptr internal_fstat(fd_t fd, void *buf) {
175 DEFINE__REAL(int, _fstat_current, int a, void *b);
176 return _REAL(_fstat_current, fd, buf);
177}
178
179uptr internal_filesize(fd_t fd) {
180 struct stat st;
181 if (internal_fstat(fd, &st))
182 return -1;
183 return (uptr)st.st_size;
184}
185
186uptr internal_dup(int oldfd) {
187 DEFINE__REAL(int, dup, int a);
188 return _REAL(dup, oldfd);
189}
190
191uptr internal_dup2(int oldfd, int newfd) {
192 DEFINE__REAL(int, dup2, int a, int b);
193 return _REAL(dup2, oldfd, newfd);
194}
195
196uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
197 CHECK(&_kern_read_link);
198 RETURN_AND_SET_ERRNO(_kern_read_link(-1, path, buf, &bufsize));
199}
200
201uptr internal_unlink(const char *path) {
202 DEFINE__REAL(int, unlink, const char *a);
203 return _REAL(unlink, path);
204}
205
206uptr internal_rename(const char *oldpath, const char *newpath) {
207 DEFINE__REAL(int, rename, const char *a, const char *b);
208 return _REAL(rename, oldpath, newpath);
209}
210
211uptr internal_sched_yield() {
212 CHECK(&_kern_thread_yield);
213 _kern_thread_yield();
214 return 0;
215}
216
217void internal__exit(int exitcode) {
218 DEFINE__REAL(void, _exit, int a);
219 _REAL(_exit, exitcode);
220 Die(); // Unreachable.
221}
222
223void internal_usleep(u64 useconds) {
224 _kern_snooze_etc(useconds, B_SYSTEM_TIMEBASE, B_RELATIVE_TIMEOUT, NULL);
225}
226
227uptr internal_execve(const char *filename, char *const argv[],
228 char *const envp[]) {
229 DEFINE__REAL(int, execve, const char *, char *const[], char *const[]);
230 return _REAL(execve, filename, argv, envp);
231}
232
233# if 0
234tid_t GetTid() {
235 DEFINE__REAL(int, _lwp_self);
236 return _REAL(_lwp_self);
237}
238
239int TgKill(pid_t pid, tid_t tid, int sig) {
240 DEFINE__REAL(int, _lwp_kill, int a, int b);
241 (void)pid;
242 return _REAL(_lwp_kill, tid, sig);
243}
244
245u64 NanoTime() {
246 timeval tv;
247 DEFINE__REAL(int, __gettimeofday50, void *a, void *b);
248 internal_memset(&tv, 0, sizeof(tv));
249 _REAL(__gettimeofday50, &tv, 0);
250 return (u64)tv.tv_sec * 1000 * 1000 * 1000 + tv.tv_usec * 1000;
251}
252# endif
253
254uptr internal_clock_gettime(__sanitizer_clockid_t clk_id, void *tp) {
255 DEFINE__REAL(int, __clock_gettime50, __sanitizer_clockid_t a, void *b);
256 return _REAL(__clock_gettime50, clk_id, tp);
257}
258
259uptr internal_ptrace(int request, int pid, void *addr, int data) {
260 DEFINE__REAL(int, ptrace, int a, int b, void *c, int d);
261 return _REAL(ptrace, request, pid, addr, data);
262}
263
264uptr internal_waitpid(int pid, int *status, int options) {
265 DEFINE__REAL(int, waitpid, pid_t, int *, int);
266 return _REAL(waitpid, pid, status, options);
267}
268
269uptr internal_getpid() {
270 DEFINE__REAL(int, getpid);
271 return _REAL(getpid);
272}
273
274uptr internal_getppid() {
275 DEFINE__REAL(int, getppid);
276 return _REAL(getppid);
277}
278
279int internal_dlinfo(void *handle, int request, void *p) {
280 DEFINE__REAL(int, dlinfo, void *a, int b, void *c);
281 return _REAL(dlinfo, handle, request, p);
282}
283
284uptr internal_getdents(fd_t fd, void *dirp, unsigned int count) {
285 DEFINE__REAL(int, __getdents30, int a, void *b, size_t c);
286 return _REAL(__getdents30, fd, dirp, count);
287}
288
289uptr internal_lseek(fd_t fd, OFF_T offset, int whence) {
290 CHECK(&_kern_seek);
291 off_t result = _kern_seek(fd, offset, whence);
292 if (result < 0) {
293 errno = result;
294 return -1;
295 }
296 return result;
297}
298
299uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
300 Printf("internal_prctl not implemented for Haiku");
301 Die();
302 return 0;
303}
304
305uptr internal_sigaltstack(const void *ss, void *oss) {
306 DEFINE__REAL(int, __sigaltstack14, const void *a, void *b);
307 return _REAL(__sigaltstack14, ss, oss);
308}
309
310int internal_fork() {
311 DEFINE__REAL(int, fork);
312 return _REAL(fork);
313}
314
315# if 0
316int internal_sysctl(const int *name, unsigned int namelen, void *oldp,
317 uptr *oldlenp, const void *newp, uptr newlen) {
318 CHECK(&__sysctl);
319 return __sysctl(name, namelen, oldp, (size_t *)oldlenp, newp, (size_t)newlen);
320}
321# endif
322
323int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
324 const void *newp, uptr newlen) {
325 DEFINE__REAL(int, sysctlbyname, const char *a, void *b, size_t *c,
326 const void *d, size_t e);
327 return _REAL(sysctlbyname, sname, oldp, (size_t *)oldlenp, newp,
328 (size_t)newlen);
329}
330
331uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
332 __sanitizer_sigset_t *oldset) {
333 CHECK(&_kern_set_signal_mask);
334 return _kern_set_signal_mask(how, set, oldset);
335}
336
337void internal_sigfillset(__sanitizer_sigset_t *set) {
338 DEFINE__REAL(int, __sigfillset14, const void *a);
339 (void)_REAL(__sigfillset14, set);
340}
341
342void internal_sigemptyset(__sanitizer_sigset_t *set) {
343 DEFINE__REAL(int, __sigemptyset14, const void *a);
344 (void)_REAL(__sigemptyset14, set);
345}
346
347void internal_sigdelset(__sanitizer_sigset_t *set, int signo) {
348 DEFINE__REAL(int, __sigdelset14, const void *a, int b);
349 (void)_REAL(__sigdelset14, set, signo);
350}
351
352uptr internal_clone(int (*fn)(void *), void *child_stack, int flags,
353 void *arg) {
354 DEFINE__REAL(int, clone, int (*a)(void *b), void *c, int d, void *e);
355
356 return _REAL(clone, fn, child_stack, flags, arg);
357}
358
359} // namespace __sanitizer
360
361#endif
362