File: mempcpy_chk.c

package info (click to toggle)
glibc 2.19-18+deb8u10
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 205,140 kB
  • ctags: 145,497
  • sloc: ansic: 970,509; asm: 241,209; sh: 10,069; makefile: 8,476; cpp: 3,595; perl: 2,077; pascal: 1,839; awk: 1,704; yacc: 317; sed: 73
file content (37 lines) | stat: -rw-r--r-- 1,312 bytes parent folder | download | duplicates (10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
/* Copy memory to memory until the specified number of bytes
   has been copied, return pointer to following byte, with error checking.
   Overlap is NOT handled correctly.
   Copyright (C) 1991-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Torbjorn Granlund (tege@sics.se).

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   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, see
   <http://www.gnu.org/licenses/>.  */

#include <string.h>
#include <memcopy.h>
#include <pagecopy.h>

void *
__mempcpy_chk (dstpp, srcpp, len, dstlen)
     void *dstpp;
     const void *srcpp;
     size_t len;
     size_t dstlen;
{
  if (__builtin_expect (dstlen < len, 0))
    __chk_fail ();

  return __mempcpy (dstpp, srcpp, len);
}