libsanitizer/sanitizer_common/sanitizer_solaris.cpp

   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
  41 namespace __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
  64 DECLARE__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
  69 DECLARE__REAL_AND_INTERNAL(uptr, munmap, void *addr, uptr length) {
  70   return _REAL(munmap)(addr, length);
  71 }
  72
  73 DECLARE__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.
  85 extern "C" int madvise(void *, size_t, int);
  86
  87 int internal_madvise(uptr addr, uptr length, int advice) {
  88   return madvise((void *)addr, length, advice);
  89 }
  90
  91 DECLARE__REAL_AND_INTERNAL(uptr, close, fd_t fd) {
  92   return _REAL(close)(fd);
  93 }
  94
  95 extern "C" int _REAL64(open)(const char *, int, ...);
  96
  97 uptr internal_open(const char *filename, int flags) {
  98   return _REAL64(open)(filename, flags);
  99 }
 100
 101 uptr internal_open(const char *filename, int flags, u32 mode) {
 102   return _REAL64(open)(filename, flags, mode);
 103 }
 104
 105 DECLARE__REAL_AND_INTERNAL(uptr, read, fd_t fd, void *buf, uptr count) {
 106   return _REAL(read)(fd, buf, count);
 107 }
 108
 109 DECLARE__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.
 114 DECLARE__REAL_AND_INTERNAL(uptr, ftruncate, fd_t fd, uptr size) {
 115   return ftruncate(fd, size);
 116 }
 117
 118 DECLARE__REAL_AND_INTERNAL64(uptr, stat, const char *path, void *buf) {
 119   return _REAL64(stat)(path, (struct stat *)buf);
 120 }
 121
 122 DECLARE__REAL_AND_INTERNAL64(uptr, lstat, const char *path, void *buf) {
 123   return _REAL64(lstat)(path, (struct stat *)buf);
 124 }
 125
 126 DECLARE__REAL_AND_INTERNAL64(uptr, fstat, fd_t fd, void *buf) {
 127   return _REAL64(fstat)(fd, (struct stat *)buf);
 128 }
 129
 130 uptr 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
 137 DECLARE__REAL_AND_INTERNAL(uptr, dup, int oldfd) {
 138   return _REAL(dup)(oldfd);
 139 }
 140
 141 DECLARE__REAL_AND_INTERNAL(uptr, dup2, int oldfd, int newfd) {
 142   return _REAL(dup2)(oldfd, newfd);
 143 }
 144
 145 DECLARE__REAL_AND_INTERNAL(uptr, readlink, const char *path, char *buf,
 146                            uptr bufsize) {
 147   return _REAL(readlink)(path, buf, bufsize);
 148 }
 149
 150 DECLARE__REAL_AND_INTERNAL(uptr, unlink, const char *path) {
 151   return _REAL(unlink)(path);
 152 }
 153
 154 DECLARE__REAL_AND_INTERNAL(uptr, rename, const char *oldpath,
 155                            const char *newpath) {
 156   return _REAL(rename)(oldpath, newpath);
 157 }
 158
 159 DECLARE__REAL_AND_INTERNAL(uptr, sched_yield, void) {
 160   return sched_yield();
 161 }
 162
 163 DECLARE__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
 170 DECLARE__REAL_AND_INTERNAL(uptr, execve, const char *filename,
 171                            char *const argv[], char *const envp[]) {
 172   return _REAL(execve)(filename, argv, envp);
 173 }
 174
 175 DECLARE__REAL_AND_INTERNAL(uptr, waitpid, int pid, int *status, int options) {
 176   return _REAL(waitpid)(pid, status, options);
 177 }
 178
 179 DECLARE__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 *.
 184 DECLARE__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
 189 DECLARE__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 *.
 195 DECLARE__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 *.
 200 DECLARE__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
 206 DECLARE__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
 211 u64 NanoTime() {
 212   return gethrtime();
 213 }
 214
 215 uptr 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
 221 void FutexWait(atomic_uint32_t *p, u32 cmp) {
 222   // FIXME: implement actual blocking.
 223   sched_yield();
 224 }
 225
 226 void FutexWake(atomic_uint32_t *p, u32 count) {}
 227
 228 }  // namespace __sanitizer
 229
 230 #endif  // SANITIZER_SOLARIS