Changeset View
Changeset View
Standalone View
Standalone View
lib/libc/secure/__strchr_chk.c
- This file was added.
/*- | |||||
* Copyright (c) 1990 The Regents of the University of California. | |||||
* All rights reserved. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
* | |||||
* bionic rev: d807b9a12d3e49132b095df3d883618452033b51 | |||||
* | |||||
* $FreeBSD$ | |||||
*/ | |||||
#undef _FORTIFY_SOURCE | |||||
#include <sys/cdefs.h> | |||||
#include <secure/security.h> | |||||
#include <string.h> | |||||
#include "secure/_string.h" | |||||
char * | |||||
__strchr_chk(const char *p, int ch, size_t s_len) | |||||
{ | |||||
for (;; ++p, s_len--) { | |||||
if (__predict_false(s_len == 0)) | |||||
__fortify_chk_fail( | |||||
"strchr: prevented read past end of buffer"); | |||||
if (*p == (char)(ch)) | |||||
return ((char *)(p)); | |||||
if (*p == '\0') | |||||
return (NULL); | |||||
} | |||||
/* NOTREACHED */ | |||||
} |