1 //===-- sanitizer_posix.h -------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is shared between AddressSanitizer and ThreadSanitizer 11 // run-time libraries and declares some useful POSIX-specific functions. 12 //===----------------------------------------------------------------------===// 13 #ifndef SANITIZER_POSIX_H 14 #define SANITIZER_POSIX_H 15 16 // ----------- ATTENTION ------------- 17 // This header should NOT include any other headers from sanitizer runtime. 18 #include "sanitizer_internal_defs.h" 19 #include "sanitizer_platform_limits_freebsd.h" 20 #include "sanitizer_platform_limits_netbsd.h" 21 #include "sanitizer_platform_limits_openbsd.h" 22 #include "sanitizer_platform_limits_posix.h" 23 #include "sanitizer_platform_limits_solaris.h" 24 25 #if !SANITIZER_POSIX 26 // Make it hard to accidentally use any of functions declared in this file: 27 #error This file should only be included on POSIX 28 #endif 29 30 namespace __sanitizer { 31 32 // I/O 33 // Don't use directly, use __sanitizer::OpenFile() instead. 34 uptr internal_open(const char *filename, int flags); 35 uptr internal_open(const char *filename, int flags, u32 mode); 36 uptr internal_close(fd_t fd); 37 38 uptr internal_read(fd_t fd, void *buf, uptr count); 39 uptr internal_write(fd_t fd, const void *buf, uptr count); 40 41 // Memory 42 uptr internal_mmap(void *addr, uptr length, int prot, int flags, 43 int fd, OFF_T offset); 44 uptr internal_munmap(void *addr, uptr length); 45 int internal_mprotect(void *addr, uptr length, int prot); 46 47 // OS 48 uptr internal_filesize(fd_t fd); // -1 on error. 49 uptr internal_stat(const char *path, void *buf); 50 uptr internal_lstat(const char *path, void *buf); 51 uptr internal_fstat(fd_t fd, void *buf); 52 uptr internal_dup(int oldfd); 53 uptr internal_dup2(int oldfd, int newfd); 54 uptr internal_readlink(const char *path, char *buf, uptr bufsize); 55 uptr internal_unlink(const char *path); 56 uptr internal_rename(const char *oldpath, const char *newpath); 57 uptr internal_lseek(fd_t fd, OFF_T offset, int whence); 58 59 uptr internal_ptrace(int request, int pid, void *addr, void *data); 60 uptr internal_waitpid(int pid, int *status, int options); 61 62 int internal_fork(); 63 int internal_forkpty(int *amaster); 64 65 int internal_sysctl(const int *name, unsigned int namelen, void *oldp, 66 uptr *oldlenp, const void *newp, uptr newlen); 67 int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp, 68 const void *newp, uptr newlen); 69 70 // These functions call appropriate pthread_ functions directly, bypassing 71 // the interceptor. They are weak and may not be present in some tools. 72 SANITIZER_WEAK_ATTRIBUTE 73 int real_pthread_create(void *th, void *attr, void *(*callback)(void *), 74 void *param); 75 SANITIZER_WEAK_ATTRIBUTE 76 int real_pthread_join(void *th, void **ret); 77 78 #define DEFINE_REAL_PTHREAD_FUNCTIONS \ 79 namespace __sanitizer { \ 80 int real_pthread_create(void *th, void *attr, void *(*callback)(void *), \ 81 void *param) { \ 82 return REAL(pthread_create)(th, attr, callback, param); \ 83 } \ 84 int real_pthread_join(void *th, void **ret) { \ 85 return REAL(pthread_join(th, ret)); \ 86 } \ 87 } // namespace __sanitizer 88 89 int my_pthread_attr_getstack(void *attr, void **addr, uptr *size); 90 91 // A routine named real_sigaction() must be implemented by each sanitizer in 92 // order for internal_sigaction() to bypass interceptors. 93 int internal_sigaction(int signum, const void *act, void *oldact); 94 void internal_sigfillset(__sanitizer_sigset_t *set); 95 void internal_sigemptyset(__sanitizer_sigset_t *set); 96 bool internal_sigismember(__sanitizer_sigset_t *set, int signum); 97 98 uptr internal_execve(const char *filename, char *const argv[], 99 char *const envp[]); 100 101 bool IsStateDetached(int state); 102 103 // Move the fd out of {0, 1, 2} range. 104 fd_t ReserveStandardFds(fd_t fd); 105 106 bool ShouldMockFailureToOpen(const char *path); 107 108 } // namespace __sanitizer 109 110 #endif // SANITIZER_POSIX_H 111