Line data    Source code

       1             : /* Copyright (C) 2004-2022 Free Software Foundation, Inc.
       2             :    This file is part of the GNU C Library.
       3             : 
       4             :    The GNU C Library is free software; you can redistribute it and/or
       5             :    modify it under the terms of the GNU Lesser General Public
       6             :    License as published by the Free Software Foundation; either
       7             :    version 2.1 of the License, or (at your option) any later version.
       8             : 
       9             :    The GNU C Library is distributed in the hope that it will be useful,
      10             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             :    Lesser General Public License for more details.
      13             : 
      14             :    You should have received a copy of the GNU Lesser General Public
      15             :    License along with the GNU C Library; if not, see
      16             :    <https://www.gnu.org/licenses/>.  */
      17             : 
      18             : #ifndef _BITS_STRING_FORTIFIED_H
      19             : #define _BITS_STRING_FORTIFIED_H 1
      20             : 
      21             : #ifndef _STRING_H
      22             : # error "Never use <bits/string_fortified.h> directly; include <string.h> instead."
      23             : #endif
      24             : 
      25             : __fortify_function void *
      26  1810638865 : __NTH (memcpy (void *__restrict __dest, const void *__restrict __src,
      27             :                size_t __len))
      28             : {
      29  1810612132 :   return __builtin___memcpy_chk (__dest, __src, __len,
      30             :                                  __glibc_objsize0 (__dest));
      31             : }
      32             : 
      33             : __fortify_function void *
      34     7883993 : __NTH (memmove (void *__dest, const void *__src, size_t __len))
      35             : {
      36     7883993 :   return __builtin___memmove_chk (__dest, __src, __len,
      37             :                                   __glibc_objsize0 (__dest));
      38             : }
      39             : 
      40             : #ifdef __USE_GNU
      41             : __fortify_function void *
      42             : __NTH (mempcpy (void *__restrict __dest, const void *__restrict __src,
      43             :                 size_t __len))
      44             : {
      45             :   return __builtin___mempcpy_chk (__dest, __src, __len,
      46             :                                   __glibc_objsize0 (__dest));
      47             : }
      48             : #endif
      49             : 
      50             : 
      51             : /* The first two tests here help to catch a somewhat common problem
      52             :    where the second and third parameter are transposed.  This is
      53             :    especially problematic if the intended fill value is zero.  In this
      54             :    case no work is done at all.  We detect these problems by referring
      55             :    non-existing functions.  */
      56             : __fortify_function void *
      57   448041762 : __NTH (memset (void *__dest, int __ch, size_t __len))
      58             : {
      59   432453758 :   return __builtin___memset_chk (__dest, __ch, __len,
      60             :                                  __glibc_objsize0 (__dest));
      61             : }
      62             : 
      63             : #ifdef __USE_MISC
      64             : # include <bits/strings_fortified.h>
      65             : 
      66             : void __explicit_bzero_chk (void *__dest, size_t __len, size_t __destlen)
      67             :   __THROW __nonnull ((1)) __fortified_attr_access (__write_only__, 1, 2);
      68             : 
      69             : __fortify_function void
      70             : __NTH (explicit_bzero (void *__dest, size_t __len))
      71             : {
      72             :   __explicit_bzero_chk (__dest, __len, __glibc_objsize0 (__dest));
      73             : }
      74             : #endif
      75             : 
      76             : __fortify_function char *
      77             : __NTH (strcpy (char *__restrict __dest, const char *__restrict __src))
      78             : {
      79             :   return __builtin___strcpy_chk (__dest, __src, __glibc_objsize (__dest));
      80             : }
      81             : 
      82             : #ifdef __USE_XOPEN2K8
      83             : __fortify_function char *
      84           0 : __NTH (stpcpy (char *__restrict __dest, const char *__restrict __src))
      85             : {
      86           0 :   return __builtin___stpcpy_chk (__dest, __src, __glibc_objsize (__dest));
      87             : }
      88             : #endif
      89             : 
      90             : 
      91             : __fortify_function char *
      92     2927372 : __NTH (strncpy (char *__restrict __dest, const char *__restrict __src,
      93             :                 size_t __len))
      94             : {
      95     2927372 :   return __builtin___strncpy_chk (__dest, __src, __len,
      96             :                                   __glibc_objsize (__dest));
      97             : }
      98             : 
      99             : #ifdef __USE_XOPEN2K8
     100             : # if __GNUC_PREREQ (4, 7) || __glibc_clang_prereq (2, 6)
     101             : __fortify_function char *
     102             : __NTH (stpncpy (char *__dest, const char *__src, size_t __n))
     103             : {
     104             :   return __builtin___stpncpy_chk (__dest, __src, __n,
     105             :                                   __glibc_objsize (__dest));
     106             : }
     107             : # else
     108             : extern char *__stpncpy_chk (char *__dest, const char *__src, size_t __n,
     109             :                             size_t __destlen) __THROW
     110             :   __fortified_attr_access ((__write_only__, 1, 3))
     111             :   __attr_access ((__read_only__, 2));
     112             : extern char *__REDIRECT_NTH (__stpncpy_alias, (char *__dest, const char *__src,
     113             :                                                size_t __n), stpncpy);
     114             : 
     115             : __fortify_function char *
     116             : __NTH (stpncpy (char *__dest, const char *__src, size_t __n))
     117             : {
     118             :   if (__bos (__dest) != (size_t) -1
     119             :       && (!__builtin_constant_p (__n) || __n > __bos (__dest)))
     120             :     return __stpncpy_chk (__dest, __src, __n, __bos (__dest));
     121             :   return __stpncpy_alias (__dest, __src, __n);
     122             : }
     123             : # endif
     124             : #endif
     125             : 
     126             : 
     127             : __fortify_function char *
     128             : __NTH (strcat (char *__restrict __dest, const char *__restrict __src))
     129             : {
     130             :   return __builtin___strcat_chk (__dest, __src, __glibc_objsize (__dest));
     131             : }
     132             : 
     133             : 
     134             : __fortify_function char *
     135           0 : __NTH (strncat (char *__restrict __dest, const char *__restrict __src,
     136             :                 size_t __len))
     137             : {
     138           0 :   return __builtin___strncat_chk (__dest, __src, __len,
     139             :                                   __glibc_objsize (__dest));
     140             : }
     141             : 
     142             : #endif /* bits/string_fortified.h */