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/* Checking macros for stdio functions. |
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Copyright (C) 2004-2016 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, see |
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. */ |
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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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__fortify_function 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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__fortify_function 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_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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__fortify_function 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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__fortify_function 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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__fortify_function 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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__fortify_function 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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113
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__fortify_function 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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123
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__fortify_function 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_XOPEN2K8 |
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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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137
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# ifdef __va_arg_pack |
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__fortify_function 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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# elif !defined __cplusplus |
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# define dprintf(fd, ...) \ |
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__dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
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# endif |
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149
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__fortify_function int |
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vdprintf (int __fd, const char *__restrict __fmt, _G_va_list __ap) |
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{ |
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return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); |
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} |
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# endif |
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156
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# ifdef __USE_GNU |
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158
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extern int __asprintf_chk (char **__restrict __ptr, int __flag, |
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const char *__restrict __fmt, ...) |
160
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__THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur; |
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extern int __vasprintf_chk (char **__restrict __ptr, int __flag, |
162
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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 __obstack_printf_chk (struct obstack *__restrict __obstack, |
165
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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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174
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# ifdef __va_arg_pack |
175
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__fortify_function int |
176
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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, |
179
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__va_arg_pack ()); |
180
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} |
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182
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__fortify_function int |
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__NTH (__asprintf (char **__restrict __ptr, const char *__restrict __fmt, |
184
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...)) |
185
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{ |
186
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return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, |
187
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__va_arg_pack ()); |
188
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} |
189
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190
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__fortify_function int |
191
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__NTH (obstack_printf (struct obstack *__restrict __obstack, |
192
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const char *__restrict __fmt, ...)) |
193
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{ |
194
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return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, |
195
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__va_arg_pack ()); |
196
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} |
197
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# elif !defined __cplusplus |
198
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# define asprintf(ptr, ...) \ |
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__asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
200
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# define __asprintf(ptr, ...) \ |
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__asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
202
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# define obstack_printf(obstack, ...) \ |
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__obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) |
204
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# endif |
205
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206
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__fortify_function int |
207
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__NTH (vasprintf (char **__restrict __ptr, const char *__restrict __fmt, |
208
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_G_va_list __ap)) |
209
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{ |
210
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return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); |
211
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} |
212
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213
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__fortify_function int |
214
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__NTH (obstack_vprintf (struct obstack *__restrict __obstack, |
215
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const char *__restrict __fmt, _G_va_list __ap)) |
216
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{ |
217
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return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, |
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__ap); |
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} |
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# endif |
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#endif |
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#if !defined __USE_ISOC11 \ |
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|| (defined __cplusplus && __cplusplus <= 201103L && !defined __USE_GNU) |
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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"); |
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__fortify_function __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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#endif |
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extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n, |
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FILE *__restrict __stream) __wur; |
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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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__fortify_function __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), |
272
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fread) __wur; |
273
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extern size_t __REDIRECT (__fread_chk_warn, |
274
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(void *__restrict __ptr, size_t __ptrlen, |
275
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size_t __size, size_t __n, |
276
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FILE *__restrict __stream), |
277
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__fread_chk) |
278
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__wur __warnattr ("fread called with bigger size * nmemb than length " |
279
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"of destination buffer"); |
280
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281
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__fortify_function __wur size_t |
282
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fread (void *__restrict __ptr, size_t __size, size_t __n, |
283
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FILE *__restrict __stream) |
284
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{ |
285
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if (__bos0 (__ptr) != (size_t) -1) |
286
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{ |
287
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if (!__builtin_constant_p (__size) |
288
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|| !__builtin_constant_p (__n) |
289
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|| (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2))) |
290
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return __fread_chk (__ptr, __bos0 (__ptr), __size, __n, __stream); |
291
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292
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if (__size * __n > __bos0 (__ptr)) |
293
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return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream); |
294
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|
} |
295
|
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|
return __fread_alias (__ptr, __size, __n, __stream); |
296
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|
} |
297
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298
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|
#ifdef __USE_GNU |
299
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extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size, |
300
|
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|
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|
|
int __n, FILE *__restrict __stream) __wur; |
301
|
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|
|
|
|
extern char *__REDIRECT (__fgets_unlocked_alias, |
302
|
|
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|
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|
|
(char *__restrict __s, int __n, |
303
|
|
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|
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|
|
FILE *__restrict __stream), fgets_unlocked) __wur; |
304
|
|
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|
|
|
|
extern char *__REDIRECT (__fgets_unlocked_chk_warn, |
305
|
|
|
|
|
|
|
(char *__restrict __s, size_t __size, int __n, |
306
|
|
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|
|
|
|
FILE *__restrict __stream), __fgets_unlocked_chk) |
307
|
|
|
|
|
|
|
__wur __warnattr ("fgets_unlocked called with bigger size than length " |
308
|
|
|
|
|
|
|
"of destination buffer"); |
309
|
|
|
|
|
|
|
|
310
|
|
|
|
|
|
|
__fortify_function __wur char * |
311
|
|
|
|
|
|
|
fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream) |
312
|
|
|
|
|
|
|
{ |
313
|
|
|
|
|
|
|
if (__bos (__s) != (size_t) -1) |
314
|
|
|
|
|
|
|
{ |
315
|
|
|
|
|
|
|
if (!__builtin_constant_p (__n) || __n <= 0) |
316
|
|
|
|
|
|
|
return __fgets_unlocked_chk (__s, __bos (__s), __n, __stream); |
317
|
|
|
|
|
|
|
|
318
|
|
|
|
|
|
|
if ((size_t) __n > __bos (__s)) |
319
|
|
|
|
|
|
|
return __fgets_unlocked_chk_warn (__s, __bos (__s), __n, __stream); |
320
|
|
|
|
|
|
|
} |
321
|
|
|
|
|
|
|
return __fgets_unlocked_alias (__s, __n, __stream); |
322
|
|
|
|
|
|
|
} |
323
|
|
|
|
|
|
|
#endif |
324
|
|
|
|
|
|
|
|
325
|
|
|
|
|
|
|
#ifdef __USE_MISC |
326
|
|
|
|
|
|
|
# undef fread_unlocked |
327
|
|
|
|
|
|
|
extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen, |
328
|
|
|
|
|
|
|
size_t __size, size_t __n, |
329
|
|
|
|
|
|
|
FILE *__restrict __stream) __wur; |
330
|
|
|
|
|
|
|
extern size_t __REDIRECT (__fread_unlocked_alias, |
331
|
|
|
|
|
|
|
(void *__restrict __ptr, size_t __size, |
332
|
|
|
|
|
|
|
size_t __n, FILE *__restrict __stream), |
333
|
|
|
|
|
|
|
fread_unlocked) __wur; |
334
|
|
|
|
|
|
|
extern size_t __REDIRECT (__fread_unlocked_chk_warn, |
335
|
|
|
|
|
|
|
(void *__restrict __ptr, size_t __ptrlen, |
336
|
|
|
|
|
|
|
size_t __size, size_t __n, |
337
|
|
|
|
|
|
|
FILE *__restrict __stream), |
338
|
|
|
|
|
|
|
__fread_unlocked_chk) |
339
|
|
|
|
|
|
|
__wur __warnattr ("fread_unlocked called with bigger size * nmemb than " |
340
|
|
|
|
|
|
|
"length of destination buffer"); |
341
|
|
|
|
|
|
|
|
342
|
|
|
|
|
|
|
__fortify_function __wur size_t |
343
|
|
|
|
|
|
|
fread_unlocked (void *__restrict __ptr, size_t __size, size_t __n, |
344
|
|
|
|
|
|
|
FILE *__restrict __stream) |
345
|
|
|
|
|
|
|
{ |
346
|
|
|
|
|
|
|
if (__bos0 (__ptr) != (size_t) -1) |
347
|
|
|
|
|
|
|
{ |
348
|
|
|
|
|
|
|
if (!__builtin_constant_p (__size) |
349
|
|
|
|
|
|
|
|| !__builtin_constant_p (__n) |
350
|
|
|
|
|
|
|
|| (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2))) |
351
|
|
|
|
|
|
|
return __fread_unlocked_chk (__ptr, __bos0 (__ptr), __size, __n, |
352
|
|
|
|
|
|
|
__stream); |
353
|
|
|
|
|
|
|
|
354
|
|
|
|
|
|
|
if (__size * __n > __bos0 (__ptr)) |
355
|
|
|
|
|
|
|
return __fread_unlocked_chk_warn (__ptr, __bos0 (__ptr), __size, __n, |
356
|
|
|
|
|
|
|
__stream); |
357
|
|
|
|
|
|
|
} |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
# ifdef __USE_EXTERN_INLINES |
360
|
|
|
|
|
|
|
if (__builtin_constant_p (__size) |
361
|
|
|
|
|
|
|
&& __builtin_constant_p (__n) |
362
|
|
|
|
|
|
|
&& (__size | __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2)) |
363
|
|
|
|
|
|
|
&& __size * __n <= 8) |
364
|
|
|
|
|
|
|
{ |
365
|
|
|
|
|
|
|
size_t __cnt = __size * __n; |
366
|
|
|
|
|
|
|
char *__cptr = (char *) __ptr; |
367
|
|
|
|
|
|
|
if (__cnt == 0) |
368
|
|
|
|
|
|
|
return 0; |
369
|
|
|
|
|
|
|
|
370
|
|
|
|
|
|
|
for (; __cnt > 0; --__cnt) |
371
|
|
|
|
|
|
|
{ |
372
|
|
|
|
|
|
|
int __c = _IO_getc_unlocked (__stream); |
373
|
|
|
|
|
|
|
if (__c == EOF) |
374
|
|
|
|
|
|
|
break; |
375
|
|
|
|
|
|
|
*__cptr++ = __c; |
376
|
|
|
|
|
|
|
} |
377
|
|
|
|
|
|
|
return (__cptr - (char *) __ptr) / __size; |
378
|
|
|
|
|
|
|
} |
379
|
|
|
|
|
|
|
# endif |
380
|
|
|
|
|
|
|
return __fread_unlocked_alias (__ptr, __size, __n, __stream); |
381
|
|
|
|
|
|
|
} |
382
|
|
|
|
|
|
|
#endif |