libsanitizer/sanitizer_common/sanitizer_posix.h

   1 //===-- sanitizer_posix.h -------------------------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is shared between AddressSanitizer and ThreadSanitizer
   9 // run-time libraries and declares some useful POSIX-specific functions.
  10 //===----------------------------------------------------------------------===//
  11 #ifndef SANITIZER_POSIX_H
  12 #define SANITIZER_POSIX_H
  13
  14 // ----------- ATTENTION -------------
  15 // This header should NOT include any other headers from sanitizer runtime.
  16 #include "sanitizer_internal_defs.h"
  17 #include "sanitizer_platform_limits_posix.h"
  18
  19 #if !SANITIZER_POSIX
  20 // Make it hard to accidentally use any of functions declared in this file:
  21 #error This file should only be included on POSIX
  22 #endif
  23
  24 namespace __sanitizer {
  25
  26 // I/O
  27 // Don't use directly, use __sanitizer::OpenFile() instead.
  28 uptr internal_open(const char *filename, int flags);
  29 uptr internal_open(const char *filename, int flags, u32 mode);
  30 uptr internal_close(fd_t fd);
  31
  32 uptr internal_read(fd_t fd, void *buf, uptr count);
  33 uptr internal_write(fd_t fd, const void *buf, uptr count);
  34
  35 // Memory
  36 uptr internal_mmap(void *addr, uptr length, int prot, int flags,
  37                    int fd, OFF_T offset);
  38 uptr internal_munmap(void *addr, uptr length);
  39 int internal_mprotect(void *addr, uptr length, int prot);
  40
  41 // OS
  42 uptr internal_filesize(fd_t fd);  // -1 on error.
  43 uptr internal_stat(const char *path, void *buf);
  44 uptr internal_lstat(const char *path, void *buf);
  45 uptr internal_fstat(fd_t fd, void *buf);
  46 uptr internal_dup2(int oldfd, int newfd);
  47 uptr internal_readlink(const char *path, char *buf, uptr bufsize);
  48 uptr internal_unlink(const char *path);
  49 uptr internal_rename(const char *oldpath, const char *newpath);
  50 uptr internal_lseek(fd_t fd, OFF_T offset, int whence);
  51
  52 uptr internal_ptrace(int request, int pid, void *addr, void *data);
  53 uptr internal_waitpid(int pid, int *status, int options);
  54
  55 int internal_fork();
  56 int internal_forkpty(int *amaster);
  57
  58 // These functions call appropriate pthread_ functions directly, bypassing
  59 // the interceptor. They are weak and may not be present in some tools.
  60 SANITIZER_WEAK_ATTRIBUTE
  61 int real_pthread_create(void *th, void *attr, void *(*callback)(void *),
  62                         void *param);
  63 SANITIZER_WEAK_ATTRIBUTE
  64 int real_pthread_join(void *th, void **ret);
  65
  66 #define DEFINE_REAL_PTHREAD_FUNCTIONS                                          \
  67   namespace __sanitizer {                                                      \
  68   int real_pthread_create(void *th, void *attr, void *(*callback)(void *),     \
  69                           void *param) {                                       \
  70     return REAL(pthread_create)(th, attr, callback, param);                    \
  71   }                                                                            \
  72   int real_pthread_join(void *th, void **ret) {                                \
  73     return REAL(pthread_join(th, ret));                                        \
  74   }                                                                            \
  75   }  // namespace __sanitizer
  76
  77 int my_pthread_attr_getstack(void *attr, void **addr, uptr *size);
  78
  79 // A routine named real_sigaction() must be implemented by each sanitizer in
  80 // order for internal_sigaction() to bypass interceptors.
  81 int internal_sigaction(int signum, const void *act, void *oldact);
  82 void internal_sigfillset(__sanitizer_sigset_t *set);
  83 void internal_sigemptyset(__sanitizer_sigset_t *set);
  84 bool internal_sigismember(__sanitizer_sigset_t *set, int signum);
  85
  86 uptr internal_execve(const char *filename, char *const argv[],
  87                      char *const envp[]);
  88 }  // namespace __sanitizer
  89
  90 #endif  // SANITIZER_POSIX_H