[thirdparty/glibc.git] / debug / mempcpy_chk.c

/* 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);
}
Commit	Line	Data
b5cc329c UD	1	/* Copy memory to memory until the specified number of bytes
	2	has been copied, return pointer to following byte, with error checking.
	3	Overlap is NOT handled correctly.
d4697bc9	4	Copyright (C) 1991-2014 Free Software Foundation, Inc.
b5cc329c UD	5	This file is part of the GNU C Library.
	6	Contributed by Torbjorn Granlund (tege@sics.se).
	7
	8	The GNU C Library is free software; you can redistribute it and/or
	9	modify it under the terms of the GNU Lesser General Public
	10	License as published by the Free Software Foundation; either
	11	version 2.1 of the License, or (at your option) any later version.
	12
	13	The GNU C Library is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	Lesser General Public License for more details.
	17
	18	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	19	License along with the GNU C Library; if not, see
59ba27a6 PE	20	<http://www.gnu.org/licenses/>. */
b5cc329c UD	21
	22	#include <string.h>
	23	#include <memcopy.h>
	24	#include <pagecopy.h>
	25
	26	void *
	27	__mempcpy_chk (dstpp, srcpp, len, dstlen)
	28	void *dstpp;
	29	const void *srcpp;
	30	size_t len;
	31	size_t dstlen;
	32	{
	33	if (__builtin_expect (dstlen < len, 0))
	34	__chk_fail ();
	35
d674f0ef	36	return __mempcpy (dstpp, srcpp, len);
b5cc329c	37	}