diff options
Diffstat (limited to 'contrib/cpio/lib/strnlen.c')
-rw-r--r-- | contrib/cpio/lib/strnlen.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/contrib/cpio/lib/strnlen.c b/contrib/cpio/lib/strnlen.c new file mode 100644 index 0000000..c9f3898 --- /dev/null +++ b/contrib/cpio/lib/strnlen.c @@ -0,0 +1,48 @@ +/* Find the length of STRING, but scan at most MAXLEN characters. + Copyright (C) 1996, 1997, 1998, 2000-2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#if HAVE_CONFIG_H +# include <config.h> +#endif +#undef strnlen + +#include <string.h> + +#undef __strnlen +#undef strnlen + +#ifndef _LIBC +# define strnlen rpl_strnlen +#endif + +#ifndef weak_alias +# define __strnlen strnlen +#endif + +/* Find the length of STRING, but scan at most MAXLEN characters. + If no '\0' terminator is found in that many characters, return MAXLEN. */ + +size_t +__strnlen (const char *string, size_t maxlen) +{ + const char *end = memchr (string, '\0', maxlen); + return end ? (size_t) (end - string) : maxlen; +} +#ifdef weak_alias +weak_alias (__strnlen, strnlen) +#endif |