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-rw-r--r--lib/sh/strnlen.c49
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diff --git a/lib/sh/strnlen.c b/lib/sh/strnlen.c
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+/* strnlen - return length of passed string, with length limit */
+
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash 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 3 of the License, or
+ (at your option) any later version.
+
+ Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if !defined (HAVE_STRNLEN)
+
+#include <sys/types.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include <stdc.h>
+
+/* Find the length of S, but scan at most MAXLEN characters. If no '\0'
+ terminator is found within the first MAXLEN characters, return MAXLEN. */
+size_t
+strnlen (s, maxlen)
+ register const char *s;
+ size_t maxlen;
+{
+ register const char *e;
+ size_t n;
+
+ for (e = s, n = 0; *e && n < maxlen; e++, n++)
+ ;
+ return n;
+}
+#endif