LCOV - code coverage report
Current view: top level - usr/include/x86_64-linux-gnu/bits - stdio2.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 2 0.0 %
Date: 2018-11-15 08:49:49 Functions: 0 0 -

          Line data    Source code
       1             : /* Checking macros for stdio functions.
       2             :    Copyright (C) 2004-2016 Free Software Foundation, Inc.
       3             :    This file is part of the GNU C Library.
       4             : 
       5             :    The GNU C Library is free software; you can redistribute it and/or
       6             :    modify it under the terms of the GNU Lesser General Public
       7             :    License as published by the Free Software Foundation; either
       8             :    version 2.1 of the License, or (at your option) any later version.
       9             : 
      10             :    The GNU C Library is distributed in the hope that it will be useful,
      11             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13             :    Lesser General Public License for more details.
      14             : 
      15             :    You should have received a copy of the GNU Lesser General Public
      16             :    License along with the GNU C Library; if not, see
      17             :    <http://www.gnu.org/licenses/>.  */
      18             : 
      19             : #ifndef _STDIO_H
      20             : # error "Never include <bits/stdio2.h> directly; use <stdio.h> instead."
      21             : #endif
      22             : 
      23             : extern int __sprintf_chk (char *__restrict __s, int __flag, size_t __slen,
      24             :                           const char *__restrict __format, ...) __THROW;
      25             : extern int __vsprintf_chk (char *__restrict __s, int __flag, size_t __slen,
      26             :                            const char *__restrict __format,
      27             :                            _G_va_list __ap) __THROW;
      28             : 
      29             : #ifdef __va_arg_pack
      30             : __fortify_function int
      31             : __NTH (sprintf (char *__restrict __s, const char *__restrict __fmt, ...))
      32             : {
      33             :   return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
      34             :                                   __bos (__s), __fmt, __va_arg_pack ());
      35             : }
      36             : #elif !defined __cplusplus
      37             : # define sprintf(str, ...) \
      38             :   __builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1, __bos (str), \
      39             :                            __VA_ARGS__)
      40             : #endif
      41             : 
      42             : __fortify_function int
      43             : __NTH (vsprintf (char *__restrict __s, const char *__restrict __fmt,
      44             :                  _G_va_list __ap))
      45             : {
      46             :   return __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
      47             :                                    __bos (__s), __fmt, __ap);
      48             : }
      49             : 
      50             : #if defined __USE_ISOC99 || defined __USE_UNIX98
      51             : 
      52             : extern int __snprintf_chk (char *__restrict __s, size_t __n, int __flag,
      53             :                            size_t __slen, const char *__restrict __format,
      54             :                            ...) __THROW;
      55             : extern int __vsnprintf_chk (char *__restrict __s, size_t __n, int __flag,
      56             :                             size_t __slen, const char *__restrict __format,
      57             :                             _G_va_list __ap) __THROW;
      58             : 
      59             : # ifdef __va_arg_pack
      60             : __fortify_function int
      61             : __NTH (snprintf (char *__restrict __s, size_t __n,
      62             :                  const char *__restrict __fmt, ...))
      63             : {
      64             :   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      65             :                                    __bos (__s), __fmt, __va_arg_pack ());
      66             : }
      67             : # elif !defined __cplusplus
      68             : #  define snprintf(str, len, ...) \
      69             :   __builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1, __bos (str), \
      70             :                             __VA_ARGS__)
      71             : # endif
      72             : 
      73             : __fortify_function int
      74             : __NTH (vsnprintf (char *__restrict __s, size_t __n,
      75             :                   const char *__restrict __fmt, _G_va_list __ap))
      76             : {
      77             :   return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      78             :                                     __bos (__s), __fmt, __ap);
      79             : }
      80             : 
      81             : #endif
      82             : 
      83             : #if __USE_FORTIFY_LEVEL > 1
      84             : 
      85             : extern int __fprintf_chk (FILE *__restrict __stream, int __flag,
      86             :                           const char *__restrict __format, ...);
      87             : extern int __printf_chk (int __flag, const char *__restrict __format, ...);
      88             : extern int __vfprintf_chk (FILE *__restrict __stream, int __flag,
      89             :                            const char *__restrict __format, _G_va_list __ap);
      90             : extern int __vprintf_chk (int __flag, const char *__restrict __format,
      91             :                           _G_va_list __ap);
      92             : 
      93             : # ifdef __va_arg_pack
      94             : __fortify_function int
      95             : fprintf (FILE *__restrict __stream, const char *__restrict __fmt, ...)
      96             : {
      97           0 :   return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
      98             :                         __va_arg_pack ());
      99             : }
     100             : 
     101             : __fortify_function int
     102             : printf (const char *__restrict __fmt, ...)
     103             : {
     104           0 :   return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
     105             : }
     106             : # elif !defined __cplusplus
     107             : #  define printf(...) \
     108             :   __printf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
     109             : #  define fprintf(stream, ...) \
     110             :   __fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
     111             : # endif
     112             : 
     113             : __fortify_function int
     114             : vprintf (const char *__restrict __fmt, _G_va_list __ap)
     115             : {
     116             : #ifdef __USE_EXTERN_INLINES
     117             :   return __vfprintf_chk (stdout, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
     118             : #else
     119             :   return __vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap);
     120             : #endif
     121             : }
     122             : 
     123             : __fortify_function int
     124             : vfprintf (FILE *__restrict __stream,
     125             :           const char *__restrict __fmt, _G_va_list __ap)
     126             : {
     127             :   return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
     128             : }
     129             : 
     130             : # ifdef __USE_XOPEN2K8
     131             : extern int __dprintf_chk (int __fd, int __flag, const char *__restrict __fmt,
     132             :                           ...) __attribute__ ((__format__ (__printf__, 3, 4)));
     133             : extern int __vdprintf_chk (int __fd, int __flag,
     134             :                            const char *__restrict __fmt, _G_va_list __arg)
     135             :      __attribute__ ((__format__ (__printf__, 3, 0)));
     136             : 
     137             : #  ifdef __va_arg_pack
     138             : __fortify_function int
     139             : dprintf (int __fd, const char *__restrict __fmt, ...)
     140             : {
     141             :   return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt,
     142             :                         __va_arg_pack ());
     143             : }
     144             : #  elif !defined __cplusplus
     145             : #   define dprintf(fd, ...) \
     146             :   __dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
     147             : #  endif
     148             : 
     149             : __fortify_function int
     150             : vdprintf (int __fd, const char *__restrict __fmt, _G_va_list __ap)
     151             : {
     152             :   return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
     153             : }
     154             : # endif
     155             : 
     156             : # ifdef __USE_GNU
     157             : 
     158             : extern int __asprintf_chk (char **__restrict __ptr, int __flag,
     159             :                            const char *__restrict __fmt, ...)
     160             :      __THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur;
     161             : extern int __vasprintf_chk (char **__restrict __ptr, int __flag,
     162             :                             const char *__restrict __fmt, _G_va_list __arg)
     163             :      __THROW __attribute__ ((__format__ (__printf__, 3, 0))) __wur;
     164             : extern int __obstack_printf_chk (struct obstack *__restrict __obstack,
     165             :                                  int __flag, const char *__restrict __format,
     166             :                                  ...)
     167             :      __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
     168             : extern int __obstack_vprintf_chk (struct obstack *__restrict __obstack,
     169             :                                   int __flag,
     170             :                                   const char *__restrict __format,
     171             :                                   _G_va_list __args)
     172             :      __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
     173             : 
     174             : #  ifdef __va_arg_pack
     175             : __fortify_function int
     176             : __NTH (asprintf (char **__restrict __ptr, const char *__restrict __fmt, ...))
     177             : {
     178             :   return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
     179             :                          __va_arg_pack ());
     180             : }
     181             : 
     182             : __fortify_function int
     183             : __NTH (__asprintf (char **__restrict __ptr, const char *__restrict __fmt,
     184             :                    ...))
     185             : {
     186             :   return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt,
     187             :                          __va_arg_pack ());
     188             : }
     189             : 
     190             : __fortify_function int
     191             : __NTH (obstack_printf (struct obstack *__restrict __obstack,
     192             :                        const char *__restrict __fmt, ...))
     193             : {
     194             :   return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
     195             :                                __va_arg_pack ());
     196             : }
     197             : #  elif !defined __cplusplus
     198             : #   define asprintf(ptr, ...) \
     199             :   __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
     200             : #   define __asprintf(ptr, ...) \
     201             :   __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
     202             : #   define obstack_printf(obstack, ...) \
     203             :   __obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
     204             : #  endif
     205             : 
     206             : __fortify_function int
     207             : __NTH (vasprintf (char **__restrict __ptr, const char *__restrict __fmt,
     208             :                   _G_va_list __ap))
     209             : {
     210             :   return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
     211             : }
     212             : 
     213             : __fortify_function int
     214             : __NTH (obstack_vprintf (struct obstack *__restrict __obstack,
     215             :                         const char *__restrict __fmt, _G_va_list __ap))
     216             : {
     217             :   return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt,
     218             :                                 __ap);
     219             : }
     220             : 
     221             : # endif
     222             : 
     223             : #endif
     224             : 
     225             : #if !defined __USE_ISOC11 \
     226             :     || (defined __cplusplus && __cplusplus <= 201103L && !defined __USE_GNU)
     227             : extern char *__gets_chk (char *__str, size_t) __wur;
     228             : extern char *__REDIRECT (__gets_warn, (char *__str), gets)
     229             :      __wur __warnattr ("please use fgets or getline instead, gets can't "
     230             :                        "specify buffer size");
     231             : 
     232             : __fortify_function __wur char *
     233             : gets (char *__str)
     234             : {
     235             :   if (__bos (__str) != (size_t) -1)
     236             :     return __gets_chk (__str, __bos (__str));
     237             :   return __gets_warn (__str);
     238             : }
     239             : #endif
     240             : 
     241             : extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n,
     242             :                           FILE *__restrict __stream) __wur;
     243             : extern char *__REDIRECT (__fgets_alias,
     244             :                          (char *__restrict __s, int __n,
     245             :                           FILE *__restrict __stream), fgets) __wur;
     246             : extern char *__REDIRECT (__fgets_chk_warn,
     247             :                          (char *__restrict __s, size_t __size, int __n,
     248             :                           FILE *__restrict __stream), __fgets_chk)
     249             :      __wur __warnattr ("fgets called with bigger size than length "
     250             :                        "of destination buffer");
     251             : 
     252             : __fortify_function __wur char *
     253             : fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
     254             : {
     255             :   if (__bos (__s) != (size_t) -1)
     256             :     {
     257             :       if (!__builtin_constant_p (__n) || __n <= 0)
     258             :         return __fgets_chk (__s, __bos (__s), __n, __stream);
     259             : 
     260             :       if ((size_t) __n > __bos (__s))
     261             :         return __fgets_chk_warn (__s, __bos (__s), __n, __stream);
     262             :     }
     263             :   return __fgets_alias (__s, __n, __stream);
     264             : }
     265             : 
     266             : extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen,
     267             :                            size_t __size, size_t __n,
     268             :                            FILE *__restrict __stream) __wur;
     269             : extern size_t __REDIRECT (__fread_alias,
     270             :                           (void *__restrict __ptr, size_t __size,
     271             :                            size_t __n, FILE *__restrict __stream),
     272             :                           fread) __wur;
     273             : extern size_t __REDIRECT (__fread_chk_warn,
     274             :                           (void *__restrict __ptr, size_t __ptrlen,
     275             :                            size_t __size, size_t __n,
     276             :                            FILE *__restrict __stream),
     277             :                           __fread_chk)
     278             :      __wur __warnattr ("fread called with bigger size * nmemb than length "
     279             :                        "of destination buffer");
     280             : 
     281             : __fortify_function __wur size_t
     282             : fread (void *__restrict __ptr, size_t __size, size_t __n,
     283             :        FILE *__restrict __stream)
     284             : {
     285             :   if (__bos0 (__ptr) != (size_t) -1)
     286             :     {
     287             :       if (!__builtin_constant_p (__size)
     288             :           || !__builtin_constant_p (__n)
     289             :           || (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2)))
     290             :         return __fread_chk (__ptr, __bos0 (__ptr), __size, __n, __stream);
     291             : 
     292             :       if (__size * __n > __bos0 (__ptr))
     293             :         return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream);
     294             :     }
     295             :   return __fread_alias (__ptr, __size, __n, __stream);
     296             : }
     297             : 
     298             : #ifdef __USE_GNU
     299             : extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size,
     300             :                                    int __n, FILE *__restrict __stream) __wur;
     301             : extern char *__REDIRECT (__fgets_unlocked_alias,
     302             :                          (char *__restrict __s, int __n,
     303             :                           FILE *__restrict __stream), fgets_unlocked) __wur;
     304             : extern char *__REDIRECT (__fgets_unlocked_chk_warn,
     305             :                          (char *__restrict __s, size_t __size, int __n,
     306             :                           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

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