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/* Checking macros for stdio functions.
Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _STDIO_H
# error "Never include <bits/stdio2.h> directly; use <stdio.h> instead."
#endif
extern int __sprintf_chk (char *__restrict __s, int __flag, size_t __slen,
__const char *__restrict __format, ...) __THROW;
extern int __vsprintf_chk (char *__restrict __s, int __flag, size_t __slen,
__const char *__restrict __format,
_G_va_list __ap) __THROW;
#ifdef __va_arg_pack
__extern_always_inline int
__NTH (sprintf (char *__restrict __s, __const char *__restrict __fmt, ...))
{
return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
__bos (__s), __fmt, __va_arg_pack ());
}
#elif !defined __cplusplus
# define sprintf(str, ...) \
__builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1, __bos (str), \
__VA_ARGS__)
#endif
__extern_always_inline int
__NTH (vsprintf (char *__restrict __s, __const char *__restrict __fmt,
_G_va_list __ap))
{
return __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
__bos (__s), __fmt, __ap);
}
#if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98
extern int __snprintf_chk (char *__restrict __s, size_t __n, int __flag,
size_t __slen, __const char *__restrict __format,
...) __THROW;
extern int __vsnprintf_chk (char *__restrict __s, size_t __n, int __flag,
size_t __slen, __const char *__restrict __format,
_G_va_list __ap) __THROW;
# ifdef __va_arg_pack
__extern_always_inline int
__NTH (snprintf (char *__restrict __s, size_t __n,
__const char *__restrict __fmt, ...))
{
return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
__bos (__s), __fmt, __va_arg_pack ());
}
# elif !defined __cplusplus
# define snprintf(str, len, ...) \
__builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1, __bos (str), \
__VA_ARGS__)
# endif
__extern_always_inline int
__NTH (vsnprintf (char *__restrict __s, size_t __n,
__const char *__restrict __fmt, _G_va_list __ap))
{
return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
__bos (__s), __fmt, __ap);
}
#endif
#if __USE_FORTIFY_LEVEL > 1
extern int __fprintf_chk (FILE *__restrict __stream, int __flag,
__const char *__restrict __format, ...);
extern int __printf_chk (int __flag, __const char *__restrict __format, ...);
extern int __vfprintf_chk (FILE *__restrict __stream, int __flag,
__const char *__restrict __format, _G_va_list __ap);
extern int __vprintf_chk (int __flag, __const char *__restrict __format,
_G_va_list __ap);
# ifdef __va_arg_pack
__extern_always_inline int
fprintf (FILE *__restrict __stream, __const char *__restrict __fmt, ...)
{
return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
__va_arg_pack ());
}
__extern_always_inline int
printf (__const char *__restrict __fmt, ...)
{
return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
# elif !defined __cplusplus
# define printf(...) \
__printf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
# define fprintf(stream, ...) \
__fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
# endif
__extern_always_inline int
vprintf (__const char *__restrict __fmt, _G_va_list __ap)
{
#ifdef __USE_EXTERN_INLINES
return __vfprintf_chk (stdout, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
#else
return __vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap);
#endif
}
__extern_always_inline int
vfprintf (FILE *__restrict __stream,
__const char *__restrict __fmt, _G_va_list __ap)
{
return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
#endif
extern char *__gets_chk (char *__str, size_t) __wur;
extern char *__REDIRECT (__gets_warn, (char *__str), gets)
__wur __warnattr ("please use fgets or getline instead, gets can't "
"specify buffer size");
__extern_always_inline __wur char *
gets (char *__str)
{
if (__bos (__str) != (size_t) -1)
return __gets_chk (__str, __bos (__str));
return __gets_warn (__str);
}
extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n,
FILE *__restrict __stream) __wur;
extern char *__REDIRECT (__fgets_alias,
(char *__restrict __s, int __n,
FILE *__restrict __stream), fgets) __wur;
extern char *__REDIRECT (__fgets_chk_warn,
(char *__restrict __s, size_t __size, int __n,
FILE *__restrict __stream), __fgets_chk)
__wur __warnattr ("fgets called with bigger size than length "
"of destination buffer");
__extern_always_inline __wur char *
fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
{
if (__bos (__s) != (size_t) -1)
{
if (!__builtin_constant_p (__n) || __n <= 0)
return __fgets_chk (__s, __bos (__s), __n, __stream);
if ((size_t) __n > __bos (__s))
return __fgets_chk_warn (__s, __bos (__s), __n, __stream);
}
return __fgets_alias (__s, __n, __stream);
}
extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen,
size_t __size, size_t __n,
FILE *__restrict __stream) __wur;
extern size_t __REDIRECT (__fread_alias,
(void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream),
fread) __wur;
extern size_t __REDIRECT (__fread_chk_warn,
(void *__restrict __ptr, size_t __ptrlen,
size_t __size, size_t __n,
FILE *__restrict __stream),
__fread_chk)
__wur __warnattr ("fread called with bigger size * nmemb than length "
"of destination buffer");
__extern_always_inline __wur size_t
fread (void *__restrict __ptr, size_t __size, size_t __n,
FILE *__restrict __stream)
{
if (__bos0 (__ptr) != (size_t) -1)
{
if (!__builtin_constant_p (__size)
|| !__builtin_constant_p (__n)
|| (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2)))
return __fread_chk (__ptr, __bos0 (__ptr), __size, __n, __stream);
if (__size * __n > __bos0 (__ptr))
return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream);
}
return __fread_alias (__ptr, __size, __n, __stream);
}
#ifdef __USE_GNU
extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size,
int __n, FILE *__restrict __stream) __wur;
extern char *__REDIRECT (__fgets_unlocked_alias,
(char *__restrict __s, int __n,
FILE *__restrict __stream), fgets_unlocked) __wur;
extern char *__REDIRECT (__fgets_unlocked_chk_warn,
(char *__restrict __s, size_t __size, int __n,
FILE *__restrict __stream), __fgets_unlocked_chk)
__wur __warnattr ("fgets_unlocked called with bigger size than length "
"of destination buffer");
__extern_always_inline __wur char *
fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream)
{
if (__bos (__s) != (size_t) -1)
{
if (!__builtin_constant_p (__n) || __n <= 0)
return __fgets_unlocked_chk (__s, __bos (__s), __n, __stream);
if ((size_t) __n > __bos (__s))
return __fgets_unlocked_chk_warn (__s, __bos (__s), __n, __stream);
}
return __fgets_unlocked_alias (__s, __n, __stream);
}
#endif
#ifdef __USE_MISC
# undef fread_unlocked
extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen,
size_t __size, size_t __n,
FILE *__restrict __stream) __wur;
extern size_t __REDIRECT (__fread_unlocked_alias,
(void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream),
fread_unlocked) __wur;
extern size_t __REDIRECT (__fread_unlocked_chk_warn,
(void *__restrict __ptr, size_t __ptrlen,
size_t __size, size_t __n,
FILE *__restrict __stream),
__fread_unlocked_chk)
__wur __warnattr ("fread_unlocked called with bigger size * nmemb than "
"length of destination buffer");
__extern_always_inline __wur size_t
fread_unlocked (void *__restrict __ptr, size_t __size, size_t __n,
FILE *__restrict __stream)
{
if (__bos0 (__ptr) != (size_t) -1)
{
if (!__builtin_constant_p (__size)
|| !__builtin_constant_p (__n)
|| (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2)))
return __fread_unlocked_chk (__ptr, __bos0 (__ptr), __size, __n,
__stream);
if (__size * __n > __bos0 (__ptr))
return __fread_unlocked_chk_warn (__ptr, __bos0 (__ptr), __size, __n,
__stream);
}
# ifdef __USE_EXTERN_INLINES
if (__builtin_constant_p (__size)
&& __builtin_constant_p (__n)
&& (__size | __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2))
&& __size * __n <= 8)
{
size_t __cnt = __size * __n;
char *__cptr = (char *) __ptr;
if (__cnt == 0)
return 0;
for (; __cnt > 0; --__cnt)
{
int __c = _IO_getc_unlocked (__stream);
if (__c == EOF)
break;
*__cptr++ = __c;
}
return (__cptr - (char *) __ptr) / __size;
}
# endif
return __fread_unlocked_alias (__ptr, __size, __n, __stream);
}
#endif
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