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/* Checking macros for stdio functions. |
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Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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The GNU C Library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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The GNU C Library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with the GNU C Library; if not, write to the Free |
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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02111-1307 USA. */ |
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#ifndef _STDIO_H |
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# error "Never include directly; use instead." |
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#endif |
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extern int __sprintf_chk (char *__restrict __s, int __flag, size_t __slen, |
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__const char *__restrict __format, ...) __THROW; |
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extern int __vsprintf_chk (char *__restrict __s, int __flag, size_t __slen, |
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__const char *__restrict __format, |
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_G_va_list __ap) __THROW; |
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#ifdef __va_arg_pack |
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__extern_always_inline int |
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__NTH (sprintf (char *__restrict __s, __const char *__restrict __fmt, ...)) |
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{ |
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return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, |
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__bos (__s), __fmt, __va_arg_pack ()); |
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} |
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#elif !defined __cplusplus |
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# define sprintf(str, ...) \ |
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__builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1, __bos (str), \ |
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__VA_ARGS__) |
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#endif |
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__extern_always_inline int |
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__NTH (vsprintf (char *__restrict __s, __const char *__restrict __fmt, |
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_G_va_list __ap)) |
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{ |
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return __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, |
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__bos (__s), __fmt, __ap); |
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} |
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#if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98 |
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extern int __snprintf_chk (char *__restrict __s, size_t __n, int __flag, |
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size_t __slen, __const char *__restrict __format, |
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...) __THROW; |
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extern int __vsnprintf_chk (char *__restrict __s, size_t __n, int __flag, |
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size_t __slen, __const char *__restrict __format, |
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_G_va_list __ap) __THROW; |
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# ifdef __va_arg_pack |
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__extern_always_inline int |
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__NTH (snprintf (char *__restrict __s, size_t __n, |
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__const char *__restrict __fmt, ...)) |
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{ |
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return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, |
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__bos (__s), __fmt, __va_arg_pack ()); |
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} |
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# elif !defined __cplusplus |
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# define snprintf(str, len, ...) \ |
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__builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1, __bos (str), \ |
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__VA_ARGS__) |
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# endif |
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__extern_always_inline int |
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__NTH (vsnprintf (char *__restrict __s, size_t __n, |
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__const char *__restrict __fmt, _G_va_list __ap)) |
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{ |
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return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, |
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__bos (__s), __fmt, __ap); |
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} |
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#endif |
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#if __USE_FORTIFY_LEVEL > 1 |
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extern int __fprintf_chk (FILE *__restrict __stream, int __flag, |
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__const char *__restrict __format, ...); |
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extern int __printf_chk (int __flag, __const char *__restrict __format, ...); |
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extern int __vfprintf_chk (FILE *__restrict __stream, int __flag, |
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__const char *__restrict __format, _G_va_list __ap); |
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extern int __vprintf_chk (int __flag, __const char *__restrict __format, |
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_G_va_list __ap); |
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# ifdef __va_arg_pack |
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__extern_always_inline int |
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fprintf (FILE *__restrict __stream, __const char *__restrict __fmt, ...) |
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{ |
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return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, |
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__va_arg_pack ()); |
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} |
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__extern_always_inline int |
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printf (__const char *__restrict __fmt, ...) |
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{ |
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return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); |
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} |
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# elif !defined __cplusplus |
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# define printf(...) \ |
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__printf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
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# define fprintf(stream, ...) \ |
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__fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
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# endif |
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__extern_always_inline int |
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vprintf (__const char *__restrict __fmt, _G_va_list __ap) |
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{ |
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#ifdef __USE_EXTERN_INLINES |
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return __vfprintf_chk (stdout, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); |
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#else |
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return __vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap); |
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#endif |
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} |
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__extern_always_inline int |
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vfprintf (FILE *__restrict __stream, |
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__const char *__restrict __fmt, _G_va_list __ap) |
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{ |
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return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); |
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} |
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# ifdef __USE_GNU |
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extern int __asprintf_chk (char **__restrict __ptr, int __flag, |
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__const char *__restrict __fmt, ...) |
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__THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur; |
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extern int __vasprintf_chk (char **__restrict __ptr, int __flag, |
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__const char *__restrict __fmt, _G_va_list __arg) |
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__THROW __attribute__ ((__format__ (__printf__, 3, 0))) __wur; |
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extern int __dprintf_chk (int __fd, int __flag, __const char *__restrict __fmt, |
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...) __attribute__ ((__format__ (__printf__, 3, 4))); |
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extern int __vdprintf_chk (int __fd, int __flag, |
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__const char *__restrict __fmt, _G_va_list __arg) |
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__attribute__ ((__format__ (__printf__, 3, 0))); |
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extern int __obstack_printf_chk (struct obstack *__restrict __obstack, |
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int __flag, __const char *__restrict __format, |
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...) |
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__THROW __attribute__ ((__format__ (__printf__, 3, 4))); |
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extern int __obstack_vprintf_chk (struct obstack *__restrict __obstack, |
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int __flag, |
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__const char *__restrict __format, |
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_G_va_list __args) |
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__THROW __attribute__ ((__format__ (__printf__, 3, 0))); |
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154
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# ifdef __va_arg_pack |
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__extern_always_inline int |
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__NTH (asprintf (char **__restrict __ptr, __const char *__restrict __fmt, ...)) |
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{ |
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return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, |
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__va_arg_pack ()); |
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} |
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162
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__extern_always_inline int |
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__NTH (__asprintf (char **__restrict __ptr, __const char *__restrict __fmt, |
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...)) |
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{ |
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return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, |
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__va_arg_pack ()); |
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} |
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170
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__extern_always_inline int |
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dprintf (int __fd, __const char *__restrict __fmt, ...) |
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{ |
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return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, |
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__va_arg_pack ()); |
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} |
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177
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__extern_always_inline int |
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__NTH (obstack_printf (struct obstack *__restrict __obstack, |
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__const char *__restrict __fmt, ...)) |
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{ |
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return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, |
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__va_arg_pack ()); |
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} |
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# elif !defined __cplusplus |
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# define asprintf(ptr, ...) \ |
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__asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
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# define __asprintf(ptr, ...) \ |
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__asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
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# define dprintf(fd, ...) \ |
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__dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
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# define obstack_printf(obstack, ...) \ |
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__obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
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# endif |
194
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195
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__extern_always_inline int |
196
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__NTH (vasprintf (char **__restrict __ptr, __const char *__restrict __fmt, |
197
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_G_va_list __ap)) |
198
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{ |
199
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return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); |
200
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} |
201
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202
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__extern_always_inline int |
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vdprintf (int __fd, __const char *__restrict __fmt, _G_va_list __ap) |
204
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{ |
205
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return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); |
206
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} |
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208
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__extern_always_inline int |
209
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__NTH (obstack_vprintf (struct obstack *__restrict __obstack, |
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__const char *__restrict __fmt, _G_va_list __ap)) |
211
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{ |
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return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, |
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__ap); |
214
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} |
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216
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# endif |
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218
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#endif |
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220
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extern char *__gets_chk (char *__str, size_t) __wur; |
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extern char *__REDIRECT (__gets_warn, (char *__str), gets) |
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__wur __warnattr ("please use fgets or getline instead, gets can't " |
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"specify buffer size"); |
224
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225
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__extern_always_inline __wur char * |
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gets (char *__str) |
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{ |
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if (__bos (__str) != (size_t) -1) |
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return __gets_chk (__str, __bos (__str)); |
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return __gets_warn (__str); |
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} |
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233
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extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n, |
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FILE *__restrict __stream) __wur; |
235
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extern char *__REDIRECT (__fgets_alias, |
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(char *__restrict __s, int __n, |
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FILE *__restrict __stream), fgets) __wur; |
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extern char *__REDIRECT (__fgets_chk_warn, |
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(char *__restrict __s, size_t __size, int __n, |
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FILE *__restrict __stream), __fgets_chk) |
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__wur __warnattr ("fgets called with bigger size than length " |
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"of destination buffer"); |
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__extern_always_inline __wur char * |
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fgets (char *__restrict __s, int __n, FILE *__restrict __stream) |
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{ |
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if (__bos (__s) != (size_t) -1) |
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{ |
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if (!__builtin_constant_p (__n) || __n <= 0) |
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return __fgets_chk (__s, __bos (__s), __n, __stream); |
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if ((size_t) __n > __bos (__s)) |
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return __fgets_chk_warn (__s, __bos (__s), __n, __stream); |
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} |
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return __fgets_alias (__s, __n, __stream); |
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} |
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extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen, |
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size_t __size, size_t __n, |
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FILE *__restrict __stream) __wur; |
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extern size_t __REDIRECT (__fread_alias, |
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(void *__restrict __ptr, size_t __size, |
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size_t __n, FILE *__restrict __stream), |
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fread) __wur; |
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extern size_t __REDIRECT (__fread_chk_warn, |
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(void *__restrict __ptr, size_t __ptrlen, |
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size_t __size, size_t __n, |
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FILE *__restrict __stream), |
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__fread_chk) |
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__wur __warnattr ("fread called with bigger size * nmemb than length " |
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"of destination buffer"); |
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__extern_always_inline __wur size_t |
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fread (void *__restrict __ptr, size_t __size, size_t __n, |
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FILE *__restrict __stream) |
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{ |
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if (__bos0 (__ptr) != (size_t) -1) |
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{ |
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if (!__builtin_constant_p (__size) |
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|| !__builtin_constant_p (__n) |
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|| (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2))) |
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return __fread_chk (__ptr, __bos0 (__ptr), __size, __n, __stream); |
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if (__size * __n > __bos0 (__ptr)) |
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return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream); |
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} |
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return __fread_alias (__ptr, __size, __n, __stream); |
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} |
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#ifdef __USE_GNU |
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extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size, |
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int __n, FILE *__restrict __stream) __wur; |
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extern char *__REDIRECT (__fgets_unlocked_alias, |
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(char *__restrict __s, int __n, |
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FILE *__restrict __stream), fgets_unlocked) __wur; |
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extern char *__REDIRECT (__fgets_unlocked_chk_warn, |
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(char *__restrict __s, size_t __size, int __n, |
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FILE *__restrict __stream), __fgets_unlocked_chk) |
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__wur __warnattr ("fgets_unlocked called with bigger size than length " |
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"of destination buffer"); |
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__extern_always_inline __wur char * |
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fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream) |
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{ |
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if (__bos (__s) != (size_t) -1) |
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{ |
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if (!__builtin_constant_p (__n) || __n <= 0) |
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return __fgets_unlocked_chk (__s, __bos (__s), __n, __stream); |
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if ((size_t) __n > __bos (__s)) |
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return __fgets_unlocked_chk_warn (__s, __bos (__s), __n, __stream); |
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} |
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return __fgets_unlocked_alias (__s, __n, __stream); |
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} |
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#endif |
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#ifdef __USE_MISC |
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# undef fread_unlocked |
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extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen, |
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size_t __size, size_t __n, |
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FILE *__restrict __stream) __wur; |
322
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extern size_t __REDIRECT (__fread_unlocked_alias, |
323
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(void *__restrict __ptr, size_t __size, |
324
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size_t __n, FILE *__restrict __stream), |
325
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fread_unlocked) __wur; |
326
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extern size_t __REDIRECT (__fread_unlocked_chk_warn, |
327
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(void *__restrict __ptr, size_t __ptrlen, |
328
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size_t __size, size_t __n, |
329
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FILE *__restrict __stream), |
330
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__fread_unlocked_chk) |
331
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__wur __warnattr ("fread_unlocked called with bigger size * nmemb than " |
332
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"length of destination buffer"); |
333
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334
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__extern_always_inline __wur size_t |
335
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fread_unlocked (void *__restrict __ptr, size_t __size, size_t __n, |
336
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FILE *__restrict __stream) |
337
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{ |
338
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if (__bos0 (__ptr) != (size_t) -1) |
339
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{ |
340
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if (!__builtin_constant_p (__size) |
341
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|| !__builtin_constant_p (__n) |
342
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|| (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2))) |
343
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return __fread_unlocked_chk (__ptr, __bos0 (__ptr), __size, __n, |
344
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__stream); |
345
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346
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if (__size * __n > __bos0 (__ptr)) |
347
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return __fread_unlocked_chk_warn (__ptr, __bos0 (__ptr), __size, __n, |
348
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__stream); |
349
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} |
350
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351
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# ifdef __USE_EXTERN_INLINES |
352
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if (__builtin_constant_p (__size) |
353
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&& __builtin_constant_p (__n) |
354
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&& (__size | __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2)) |
355
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&& __size * __n <= 8) |
356
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{ |
357
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size_t __cnt = __size * __n; |
358
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char *__cptr = (char *) __ptr; |
359
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if (__cnt == 0) |
360
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return 0; |
361
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362
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for (; __cnt > 0; --__cnt) |
363
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{ |
364
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int __c = _IO_getc_unlocked (__stream); |
365
|
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|
if (__c == EOF) |
366
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|
break; |
367
|
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|
*__cptr++ = __c; |
368
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} |
369
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return (__cptr - (char *) __ptr) / __size; |
370
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|
} |
371
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|
# endif |
372
|
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|
return __fread_unlocked_alias (__ptr, __size, __n, __stream); |
373
|
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|
} |
374
|
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|
#endif |