1238901Sandrew//===-- sanitizer_libc.h ----------------------------------------*- C++ -*-===// 2238901Sandrew// 3238901Sandrew// The LLVM Compiler Infrastructure 4238901Sandrew// 5238901Sandrew// This file is distributed under the University of Illinois Open Source 6238901Sandrew// License. See LICENSE.TXT for details. 7238901Sandrew// 8238901Sandrew//===----------------------------------------------------------------------===// 9238901Sandrew// 10238901Sandrew// This file is shared between AddressSanitizer and ThreadSanitizer 11238901Sandrew// run-time libraries. 12238901Sandrew// These tools can not use some of the libc functions directly because those 13238901Sandrew// functions are intercepted. Instead, we implement a tiny subset of libc here. 14288943Sdim// FIXME: Some of functions declared in this file are in fact POSIX, not libc. 15238901Sandrew//===----------------------------------------------------------------------===// 16296417Sdim 17238901Sandrew#ifndef SANITIZER_LIBC_H 18238901Sandrew#define SANITIZER_LIBC_H 19238901Sandrew 20238901Sandrew// ----------- ATTENTION ------------- 21238901Sandrew// This header should NOT include any other headers from sanitizer runtime. 22251034Sed#include "sanitizer_internal_defs.h" 23238901Sandrew 24238901Sandrewnamespace __sanitizer { 25238901Sandrew 26238901Sandrew// internal_X() is a custom implementation of X() for use in RTL. 27238901Sandrew 28238901Sandrew// String functions 29238901Sandrews64 internal_atoll(const char *nptr); 30238901Sandrewvoid *internal_memchr(const void *s, int c, uptr n); 31280031Sdimvoid *internal_memrchr(const void *s, int c, uptr n); 32238901Sandrewint internal_memcmp(const void* s1, const void* s2, uptr n); 33238901Sandrewvoid *internal_memcpy(void *dest, const void *src, uptr n); 34245614Sandrewvoid *internal_memmove(void *dest, const void *src, uptr n); 35276789Sdim// Set [s, s + n) to 0. Both s and n should be 16-aligned. 36276789Sdimvoid internal_bzero_aligned16(void *s, uptr n); 37238901Sandrew// Should not be used in performance-critical places. 38238901Sandrewvoid *internal_memset(void *s, int c, uptr n); 39238901Sandrewchar* internal_strchr(const char *s, int c); 40274201Sdimchar *internal_strchrnul(const char *s, int c); 41238901Sandrewint internal_strcmp(const char *s1, const char *s2); 42245614Sandrewuptr internal_strcspn(const char *s, const char *reject); 43238901Sandrewchar *internal_strdup(const char *s); 44280031Sdimchar *internal_strndup(const char *s, uptr n); 45238901Sandrewuptr internal_strlen(const char *s); 46296417Sdimuptr internal_strlcat(char *dst, const char *src, uptr maxlen); 47238901Sandrewchar *internal_strncat(char *dst, const char *src, uptr n); 48238901Sandrewint internal_strncmp(const char *s1, const char *s2, uptr n); 49296417Sdimuptr internal_strlcpy(char *dst, const char *src, uptr maxlen); 50238901Sandrewchar *internal_strncpy(char *dst, const char *src, uptr n); 51238901Sandrewuptr internal_strnlen(const char *s, uptr maxlen); 52238901Sandrewchar *internal_strrchr(const char *s, int c); 53238901Sandrew// This is O(N^2), but we are not using it in hot places. 54238901Sandrewchar *internal_strstr(const char *haystack, const char *needle); 55238901Sandrew// Works only for base=10 and doesn't set errno. 56238901Sandrews64 internal_simple_strtoll(const char *nptr, char **endptr, int base); 57251034Sedint internal_snprintf(char *buffer, uptr length, const char *format, ...); 58238901Sandrew 59245614Sandrew// Return true if all bytes in [mem, mem+size) are zero. 60245614Sandrew// Optimized for the case when the result is true. 61245614Sandrewbool mem_is_zero(const char *mem, uptr size); 62245614Sandrew 63238901Sandrew// I/O 64288943Sdimconst fd_t kInvalidFd = (fd_t)-1; 65245614Sandrewconst fd_t kStdinFd = 0; 66288943Sdimconst fd_t kStdoutFd = (fd_t)1; 67288943Sdimconst fd_t kStderrFd = (fd_t)2; 68251034Sed 69276789Sdimuptr internal_ftruncate(fd_t fd, uptr size); 70251034Sed 71251034Sed// OS 72251034Sedvoid NORETURN internal__exit(int exitcode); 73238901Sandrew 74251034Seduptr internal_getpid(); 75251034Seduptr internal_getppid(); 76251034Sed 77238901Sandrew// Threading 78251034Seduptr internal_sched_yield(); 79238901Sandrew 80251034Sed// Error handling 81296417Sdimbool internal_iserror(uptr retval, int *rverrno = nullptr); 82251034Sed 83296417Sdim} // namespace __sanitizer 84238901Sandrew 85296417Sdim#endif // SANITIZER_LIBC_H 86