qemu_mode/libqasan/libqasan.h

/*******************************************************************************
Copyright (c) 2019-2022, Andrea Fioraldi


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modification, are permitted provided that the following conditions are met:

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   list of conditions and the following disclaimer.
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   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/

#ifndef __LIBQASAN_H__
#define __LIBQASAN_H__

#define _GNU_SOURCE
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <signal.h>
#include <ucontext.h>
#include <inttypes.h>
#include <dlfcn.h>
#include <wchar.h>

#include "qasan.h"

#define QASAN_LOG(msg...)                   \
  do {                                      \
                                            \
    if (__qasan_log) {                      \
                                            \
      fprintf(stderr, "==%d== ", getpid()); \
      fprintf(stderr, msg);                 \
                                            \
    }                                       \
                                            \
  } while (0)

#ifdef DEBUG
  #define QASAN_DEBUG(msg...)                 \
    do {                                      \
                                              \
      if (__qasan_debug) {                    \
                                              \
        fprintf(stderr, "==%d== ", getpid()); \
        fprintf(stderr, msg);                 \
                                              \
      }                                       \
                                              \
    } while (0)

#else
  #define QASAN_DEBUG(msg...) \
    do {                      \
                              \
    } while (0)
#endif

#define ASSERT_DLSYM(name)                                              \
  ({                                                                    \
                                                                        \
    void *a = (void *)dlsym(RTLD_NEXT, #name);                          \
    if (!a) {                                                           \
                                                                        \
      fprintf(stderr,                                                   \
              "FATAL ERROR: failed dlsym of " #name " in libqasan!\n"); \
      abort();                                                          \
                                                                        \
    }                                                                   \
    a;                                                                  \
                                                                        \
  })

extern int __qasan_debug;
extern int __qasan_log;

void __libqasan_init_hooks(void);
void __libqasan_init_malloc(void);

void __libqasan_hotpatch(void);

size_t __libqasan_malloc_usable_size(void *ptr);
void * __libqasan_malloc(size_t size);
void   __libqasan_free(void *ptr);
void * __libqasan_calloc(size_t nmemb, size_t size);
void * __libqasan_realloc(void *ptr, size_t size);
int    __libqasan_posix_memalign(void **ptr, size_t align, size_t len);
void * __libqasan_memalign(size_t align, size_t len);
void * __libqasan_aligned_alloc(size_t align, size_t len);

void *   __libqasan_memcpy(void *dest, const void *src, size_t n);
void *   __libqasan_memmove(void *dest, const void *src, size_t n);
void *   __libqasan_memset(void *s, int c, size_t n);
void *   __libqasan_memchr(const void *s, int c, size_t n);
void *   __libqasan_memrchr(const void *s, int c, size_t n);
size_t   __libqasan_strlen(const char *s);
size_t   __libqasan_strnlen(const char *s, size_t len);
int      __libqasan_strcmp(const char *str1, const char *str2);
int      __libqasan_strncmp(const char *str1, const char *str2, size_t len);
int      __libqasan_strcasecmp(const char *str1, const char *str2);
int      __libqasan_strncasecmp(const char *str1, const char *str2, size_t len);
int      __libqasan_memcmp(const void *mem1, const void *mem2, size_t len);
int      __libqasan_bcmp(const void *mem1, const void *mem2, size_t len);
char *   __libqasan_strstr(const char *haystack, const char *needle);
char *   __libqasan_strcasestr(const char *haystack, const char *needle);
void *   __libqasan_memmem(const void *haystack, size_t haystack_len,
                           const void *needle, size_t needle_len);
char *   __libqasan_strchr(const char *s, int c);
char *   __libqasan_strrchr(const char *s, int c);
size_t   __libqasan_wcslen(const wchar_t *s);
wchar_t *__libqasan_wcscpy(wchar_t *d, const wchar_t *s);
int      __libqasan_wcscmp(const wchar_t *s1, const wchar_t *s2);

#endif