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nagios-plugins  1.4.16
strnlen.c
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00001 /* Find the length of STRING, but scan at most MAXLEN characters.
00002    Copyright (C) 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
00003    Written by Simon Josefsson.
00004 
00005    This program is free software; you can redistribute it and/or modify
00006    it under the terms of the GNU General Public License as published by
00007    the Free Software Foundation; either version 3, or (at your option)
00008    any later version.
00009 
00010    This program is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013    GNU General Public License for more details.
00014 
00015    You should have received a copy of the GNU General Public License
00016    along with this program; if not, write to the Free Software Foundation,
00017    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
00018 
00019 #include <config.h>
00020 
00021 #include <string.h>
00022 
00023 /* Find the length of STRING, but scan at most MAXLEN characters.
00024    If no '\0' terminator is found in that many characters, return MAXLEN.  */
00025 
00026 size_t
00027 strnlen (const char *string, size_t maxlen)
00028 {
00029   const char *end = memchr (string, '\0', maxlen);
00030   return end ? (size_t) (end - string) : maxlen;
00031 }