/* Checking macros for stdio functions.
- Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2004-2013 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
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. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#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;
+ const char *__restrict __format, ...) __THROW;
extern int __vsprintf_chk (char *__restrict __s, int __flag, size_t __slen,
- __const char *__restrict __format,
+ const char *__restrict __format,
_G_va_list __ap) __THROW;
-#define sprintf(str, ...) \
+#ifdef __va_arg_pack
+__fortify_function 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__)
-#define vsprintf(str, fmt, ap) \
- __builtin___vsprintf_chk (str, __USE_FORTIFY_LEVEL - 1, __bos (str), fmt, ap)
+#endif
+
+__fortify_function 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,
+ 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,
+ size_t __slen, const char *__restrict __format,
_G_va_list __ap) __THROW;
-# define snprintf(str, len, ...) \
+# ifdef __va_arg_pack
+__fortify_function 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__)
-# define vsnprintf(str, len, fmt, ap) \
- __builtin___vsnprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1, __bos (str), \
- fmt, ap)
+# endif
+
+__fortify_function 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, ...);
+ 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,
+ const char *__restrict __format, _G_va_list __ap);
+extern int __vprintf_chk (int __flag, const char *__restrict __format,
_G_va_list __ap);
-# define printf(...) \
+# ifdef __va_arg_pack
+__fortify_function int
+fprintf (FILE *__restrict __stream, const char *__restrict __fmt, ...)
+{
+ return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
+ __va_arg_pack ());
+}
+
+__fortify_function 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, ...) \
+# define fprintf(stream, ...) \
__fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
-# define vprintf(format, ap) \
- __vprintf_chk (__USE_FORTIFY_LEVEL - 1, format, ap)
-# define vfprintf(stream, format, ap) \
- __vfprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, format, ap)
+# endif
+
+__fortify_function 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
+}
+
+__fortify_function int
+vfprintf (FILE *__restrict __stream,
+ const char *__restrict __fmt, _G_va_list __ap)
+{
+ return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
+}
+
+# ifdef __USE_XOPEN2K8
+extern int __dprintf_chk (int __fd, int __flag, const char *__restrict __fmt,
+ ...) __attribute__ ((__format__ (__printf__, 3, 4)));
+extern int __vdprintf_chk (int __fd, int __flag,
+ const char *__restrict __fmt, _G_va_list __arg)
+ __attribute__ ((__format__ (__printf__, 3, 0)));
+
+# ifdef __va_arg_pack
+__fortify_function int
+dprintf (int __fd, const char *__restrict __fmt, ...)
+{
+ return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt,
+ __va_arg_pack ());
+}
+# elif !defined __cplusplus
+# define dprintf(fd, ...) \
+ __dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
+# endif
+
+__fortify_function int
+vdprintf (int __fd, const char *__restrict __fmt, _G_va_list __ap)
+{
+ return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
+}
+# endif
+
+# ifdef __USE_GNU
+
+extern int __asprintf_chk (char **__restrict __ptr, int __flag,
+ const char *__restrict __fmt, ...)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur;
+extern int __vasprintf_chk (char **__restrict __ptr, int __flag,
+ const char *__restrict __fmt, _G_va_list __arg)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 0))) __wur;
+extern int __obstack_printf_chk (struct obstack *__restrict __obstack,
+ int __flag, const char *__restrict __format,
+ ...)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
+extern int __obstack_vprintf_chk (struct obstack *__restrict __obstack,
+ int __flag,
+ const char *__restrict __format,
+ _G_va_list __args)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
+
+# ifdef __va_arg_pack
+__fortify_function int
+__NTH (asprintf (char **__restrict __ptr, const char *__restrict __fmt, ...))
+{
+ return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
+ __va_arg_pack ());
+}
+
+__fortify_function int
+__NTH (__asprintf (char **__restrict __ptr, const char *__restrict __fmt,
+ ...))
+{
+ return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
+ __va_arg_pack ());
+}
+
+__fortify_function int
+__NTH (obstack_printf (struct obstack *__restrict __obstack,
+ const char *__restrict __fmt, ...))
+{
+ return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
+ __va_arg_pack ());
+}
+# elif !defined __cplusplus
+# define asprintf(ptr, ...) \
+ __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
+# define __asprintf(ptr, ...) \
+ __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
+# define obstack_printf(obstack, ...) \
+ __obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
+# endif
+
+__fortify_function int
+__NTH (vasprintf (char **__restrict __ptr, const char *__restrict __fmt,
+ _G_va_list __ap))
+{
+ return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
+}
+
+__fortify_function int
+__NTH (obstack_vprintf (struct obstack *__restrict __obstack,
+ const char *__restrict __fmt, _G_va_list __ap))
+{
+ return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
+ __ap);
+}
+
+# endif
#endif
+#if !defined __USE_ISOC11 \
+ || (defined __cplusplus && __cplusplus <= 201103L && !defined __USE_GNU)
extern char *__gets_chk (char *__str, size_t) __wur;
-extern char *__REDIRECT (__gets_alias, (char *__str), gets) __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 *
+__fortify_function __wur char *
gets (char *__str)
{
if (__bos (__str) != (size_t) -1)
return __gets_chk (__str, __bos (__str));
- return __gets_alias (__str);
+ return __gets_warn (__str);
}
+#endif
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 *
+__fortify_function __wur char *
fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
{
- if (__bos (__s) != (size_t) -1
- && (!__builtin_constant_p (__n) || (size_t) __n > __bos (__s)))
- return __fgets_chk (__s, __bos (__s), __n, __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");
+
+__fortify_function __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 *
+__fortify_function __wur char *
fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream)
{
- if (__bos (__s) != (size_t) -1
- && (!__builtin_constant_p (__n) || (size_t) __n > __bos (__s)))
- return __fgets_unlocked_chk (__s, __bos (__s), __n, __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");
+
+__fortify_function __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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