1238901Sandrew//===-- sanitizer_libc.h ----------------------------------------*- C++ -*-===// 2238901Sandrew// 3353358Sdim// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4353358Sdim// See https://llvm.org/LICENSE.txt for license information. 5353358Sdim// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6238901Sandrew// 7238901Sandrew//===----------------------------------------------------------------------===// 8238901Sandrew// 9238901Sandrew// This file is shared between AddressSanitizer and ThreadSanitizer 10238901Sandrew// run-time libraries. 11238901Sandrew// These tools can not use some of the libc functions directly because those 12238901Sandrew// functions are intercepted. Instead, we implement a tiny subset of libc here. 13288943Sdim// FIXME: Some of functions declared in this file are in fact POSIX, not libc. 14238901Sandrew//===----------------------------------------------------------------------===// 15296417Sdim 16238901Sandrew#ifndef SANITIZER_LIBC_H 17238901Sandrew#define SANITIZER_LIBC_H 18238901Sandrew 19238901Sandrew// ----------- ATTENTION ------------- 20238901Sandrew// This header should NOT include any other headers from sanitizer runtime. 21251034Sed#include "sanitizer_internal_defs.h" 22238901Sandrew 23238901Sandrewnamespace __sanitizer { 24238901Sandrew 25238901Sandrew// internal_X() is a custom implementation of X() for use in RTL. 26238901Sandrew 27238901Sandrew// String functions 28238901Sandrews64 internal_atoll(const char *nptr); 29238901Sandrewvoid *internal_memchr(const void *s, int c, uptr n); 30280031Sdimvoid *internal_memrchr(const void *s, int c, uptr n); 31238901Sandrewint internal_memcmp(const void* s1, const void* s2, uptr n); 32238901Sandrewvoid *internal_memcpy(void *dest, const void *src, uptr n); 33245614Sandrewvoid *internal_memmove(void *dest, const void *src, uptr n); 34238901Sandrew// Should not be used in performance-critical places. 35238901Sandrewvoid *internal_memset(void *s, int c, uptr n); 36238901Sandrewchar* internal_strchr(const char *s, int c); 37274201Sdimchar *internal_strchrnul(const char *s, int c); 38238901Sandrewint internal_strcmp(const char *s1, const char *s2); 39245614Sandrewuptr internal_strcspn(const char *s, const char *reject); 40238901Sandrewchar *internal_strdup(const char *s); 41238901Sandrewuptr internal_strlen(const char *s); 42296417Sdimuptr internal_strlcat(char *dst, const char *src, uptr maxlen); 43238901Sandrewchar *internal_strncat(char *dst, const char *src, uptr n); 44238901Sandrewint internal_strncmp(const char *s1, const char *s2, uptr n); 45296417Sdimuptr internal_strlcpy(char *dst, const char *src, uptr maxlen); 46238901Sandrewchar *internal_strncpy(char *dst, const char *src, uptr n); 47238901Sandrewuptr internal_strnlen(const char *s, uptr maxlen); 48238901Sandrewchar *internal_strrchr(const char *s, int c); 49238901Sandrewchar *internal_strstr(const char *haystack, const char *needle); 50238901Sandrew// Works only for base=10 and doesn't set errno. 51341825Sdims64 internal_simple_strtoll(const char *nptr, const char **endptr, int base); 52251034Sedint internal_snprintf(char *buffer, uptr length, const char *format, ...); 53238901Sandrew 54245614Sandrew// Return true if all bytes in [mem, mem+size) are zero. 55245614Sandrew// Optimized for the case when the result is true. 56245614Sandrewbool mem_is_zero(const char *mem, uptr size); 57245614Sandrew 58238901Sandrew// I/O 59314564Sdim// Define these as macros so we can use them in linker initialized global 60314564Sdim// structs without dynamic initialization. 61314564Sdim#define kInvalidFd ((fd_t)-1) 62314564Sdim#define kStdinFd ((fd_t)0) 63314564Sdim#define kStdoutFd ((fd_t)1) 64314564Sdim#define kStderrFd ((fd_t)2) 65251034Sed 66276789Sdimuptr internal_ftruncate(fd_t fd, uptr size); 67251034Sed 68251034Sed// OS 69251034Sedvoid NORETURN internal__exit(int exitcode); 70309124Sdimunsigned int internal_sleep(unsigned int seconds); 71238901Sandrew 72251034Seduptr internal_getpid(); 73251034Seduptr internal_getppid(); 74251034Sed 75238901Sandrew// Threading 76251034Seduptr internal_sched_yield(); 77238901Sandrew 78251034Sed// Error handling 79296417Sdimbool internal_iserror(uptr retval, int *rverrno = nullptr); 80251034Sed 81296417Sdim} // namespace __sanitizer 82238901Sandrew 83296417Sdim#endif // SANITIZER_LIBC_H 84