1//===-- sanitizer_solaris.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 various sanitizers' runtime libraries and
10// implements Solaris-specific functions.
11//===----------------------------------------------------------------------===//
12
13#include "sanitizer_platform.h"
14#if SANITIZER_SOLARIS
15
16#include <stdio.h>
17
18#include "sanitizer_common.h"
19#include "sanitizer_flags.h"
20#include "sanitizer_internal_defs.h"
21#include "sanitizer_libc.h"
22#include "sanitizer_placement_new.h"
23#include "sanitizer_platform_limits_posix.h"
24#include "sanitizer_procmaps.h"
25
26#include <fcntl.h>
27#include <pthread.h>
28#include <sched.h>
29#include <thread.h>
30#include <synch.h>
31#include <signal.h>
32#include <sys/mman.h>
33#include <sys/resource.h>
34#include <sys/stat.h>
35#include <sys/types.h>
36#include <dirent.h>
37#include <unistd.h>
38#include <errno.h>
39#include <stdlib.h>
40
41namespace __sanitizer {
42
43//#include "sanitizer_syscall_generic.inc"
44
45#define _REAL(func) _ ## func
46#define DECLARE__REAL(ret_type, func, ...) \
47 extern "C" ret_type _REAL(func)(__VA_ARGS__)
48#define DECLARE__REAL_AND_INTERNAL(ret_type, func, ...) \
49 DECLARE__REAL(ret_type, func, __VA_ARGS__); \
50 ret_type internal_ ## func(__VA_ARGS__)
51
52#if !defined(_LP64) && _FILE_OFFSET_BITS == 64
53#define _REAL64(func) _ ## func ## 64
54#else
55#define _REAL64(func) _REAL(func)
56#endif
57#define DECLARE__REAL64(ret_type, func, ...) \
58 extern "C" ret_type _REAL64(func)(__VA_ARGS__)
59#define DECLARE__REAL_AND_INTERNAL64(ret_type, func, ...) \
60 DECLARE__REAL64(ret_type, func, __VA_ARGS__); \
61 ret_type internal_ ## func(__VA_ARGS__)
62
63// ---------------------- sanitizer_libc.h
64DECLARE__REAL_AND_INTERNAL64(uptr, mmap, void *addr, uptr /*size_t*/ length,
65 int prot, int flags, int fd, OFF_T offset) {
66 return (uptr)_REAL64(mmap)(addr, length, prot, flags, fd, offset);
67}
68
69DECLARE__REAL_AND_INTERNAL(uptr, munmap, void *addr, uptr length) {
70 return _REAL(munmap)(addr, length);
71}
72
73DECLARE__REAL_AND_INTERNAL(int, mprotect, void *addr, uptr length, int prot) {
74 return _REAL(mprotect)(addr, length, prot);
75}
76
77// Illumos' declaration of madvise cannot be made visible if _XOPEN_SOURCE
78// is defined as g++ does on Solaris.
79//
80// This declaration is consistent with Solaris 11.4. Both Illumos and Solaris
81// versions older than 11.4 declared madvise with a caddr_t as the first
82// argument, but we don't currently support Solaris versions older than 11.4,
83// and as mentioned above the declaration is not visible on Illumos so we can
84// use any declaration we like on Illumos.
85extern "C" int madvise(void *, size_t, int);
86
87int internal_madvise(uptr addr, uptr length, int advice) {
88 return madvise((void *)addr, length, advice);
89}
90
91DECLARE__REAL_AND_INTERNAL(uptr, close, fd_t fd) {
92 return _REAL(close)(fd);
93}
94
95extern "C" int _REAL64(open)(const char *, int, ...);
96
97uptr internal_open(const char *filename, int flags) {
98 return _REAL64(open)(filename, flags);
99}
100
101uptr internal_open(const char *filename, int flags, u32 mode) {
102 return _REAL64(open)(filename, flags, mode);
103}
104
105DECLARE__REAL_AND_INTERNAL(uptr, read, fd_t fd, void *buf, uptr count) {
106 return _REAL(read)(fd, buf, count);
107}
108
109DECLARE__REAL_AND_INTERNAL(uptr, write, fd_t fd, const void *buf, uptr count) {
110 return _REAL(write)(fd, buf, count);
111}
112
113// FIXME: There's only _ftruncate64 beginning with Solaris 11.
114DECLARE__REAL_AND_INTERNAL(uptr, ftruncate, fd_t fd, uptr size) {
115 return ftruncate(fd, size);
116}
117
118DECLARE__REAL_AND_INTERNAL64(uptr, stat, const char *path, void *buf) {
119 return _REAL64(stat)(path, (struct stat *)buf);
120}
121
122DECLARE__REAL_AND_INTERNAL64(uptr, lstat, const char *path, void *buf) {
123 return _REAL64(lstat)(path, (struct stat *)buf);
124}
125
126DECLARE__REAL_AND_INTERNAL64(uptr, fstat, fd_t fd, void *buf) {
127 return _REAL64(fstat)(fd, (struct stat *)buf);
128}
129
130uptr internal_filesize(fd_t fd) {
131 struct stat st;
132 if (internal_fstat(fd, &st))
133 return -1;
134 return (uptr)st.st_size;
135}
136
137DECLARE__REAL_AND_INTERNAL(uptr, dup, int oldfd) {
138 return _REAL(dup)(oldfd);
139}
140
141DECLARE__REAL_AND_INTERNAL(uptr, dup2, int oldfd, int newfd) {
142 return _REAL(dup2)(oldfd, newfd);
143}
144
145DECLARE__REAL_AND_INTERNAL(uptr, readlink, const char *path, char *buf,
146 uptr bufsize) {
147 return _REAL(readlink)(path, buf, bufsize);
148}
149
150DECLARE__REAL_AND_INTERNAL(uptr, unlink, const char *path) {
151 return _REAL(unlink)(path);
152}
153
154DECLARE__REAL_AND_INTERNAL(uptr, rename, const char *oldpath,
155 const char *newpath) {
156 return _REAL(rename)(oldpath, newpath);
157}
158
159DECLARE__REAL_AND_INTERNAL(uptr, sched_yield, void) {
160 return sched_yield();
161}
162
163DECLARE__REAL_AND_INTERNAL(void, usleep, u64 useconds) {
164 struct timespec ts;
165 ts.tv_sec = useconds / 1000000;
166 ts.tv_nsec = (useconds % 1000000) * 1000;
167 nanosleep(&ts, nullptr);
168}
169
170DECLARE__REAL_AND_INTERNAL(uptr, execve, const char *filename,
171 char *const argv[], char *const envp[]) {
172 return _REAL(execve)(filename, argv, envp);
173}
174
175DECLARE__REAL_AND_INTERNAL(uptr, waitpid, int pid, int *status, int options) {
176 return _REAL(waitpid)(pid, status, options);
177}
178
179DECLARE__REAL_AND_INTERNAL(uptr, getpid, void) {
180 return _REAL(getpid)();
181}
182
183// FIXME: This might be wrong: _getdents doesn't take a struct linux_dirent *.
184DECLARE__REAL_AND_INTERNAL64(uptr, getdents, fd_t fd, struct linux_dirent *dirp,
185 unsigned int count) {
186 return _REAL64(getdents)(fd, dirp, count);
187}
188
189DECLARE__REAL_AND_INTERNAL64(uptr, lseek, fd_t fd, OFF_T offset, int whence) {
190 return _REAL64(lseek)(fd, offset, whence);
191}
192
193// FIXME: This might be wrong: _sigfillset doesn't take a
194// __sanitizer_sigset_t *.
195DECLARE__REAL_AND_INTERNAL(void, sigfillset, __sanitizer_sigset_t *set) {
196 _REAL(sigfillset)(set);
197}
198
199// FIXME: This might be wrong: _sigprocmask doesn't take __sanitizer_sigset_t *.
200DECLARE__REAL_AND_INTERNAL(uptr, sigprocmask, int how,
201 __sanitizer_sigset_t *set,
202 __sanitizer_sigset_t *oldset) {
203 return _REAL(sigprocmask)(how, set, oldset);
204}
205
206DECLARE__REAL_AND_INTERNAL(int, fork, void) {
207 // TODO(glider): this may call user's pthread_atfork() handlers which is bad.
208 return _REAL(fork)();
209}
210
211u64 NanoTime() {
212 return gethrtime();
213}
214
215uptr internal_clock_gettime(__sanitizer_clockid_t clk_id, void *tp) {
216 // FIXME: No internal variant.
217 return clock_gettime(clk_id, (timespec *)tp);
218}
219
220// ----------------- sanitizer_common.h
221void FutexWait(atomic_uint32_t *p, u32 cmp) {
222 // FIXME: implement actual blocking.
223 sched_yield();
224}
225
226void FutexWake(atomic_uint32_t *p, u32 count) {}
227
228} // namespace __sanitizer
229
230#endif // SANITIZER_SOLARIS
231