[src/trunk]: src/common/lib/libc/string kernel needs it now too.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f59f46bc5e04
branches:  trunk
changeset: 792256:f59f46bc5e04
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Dec 27 20:24:45 2013 +0000

description:
kernel needs it now too.

diffstat:

 common/lib/libc/string/strncat.c |  76 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 76 insertions(+), 0 deletions(-)

diffs (80 lines):

diff -r 95f31eee13ad -r f59f46bc5e04 common/lib/libc/string/strncat.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/common/lib/libc/string/strncat.c  Fri Dec 27 20:24:45 2013 +0000
@@ -0,0 +1,76 @@
+/*     $NetBSD: strncat.c,v 1.1 2013/12/27 20:24:45 christos Exp $     */
+
+/*-
+ * Copyright (c) 1990, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)strncat.c  8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: strncat.c,v 1.1 2013/12/27 20:24:45 christos Exp $");
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include <assert.h>
+#include <string.h>
+
+#ifdef _FORTIFY_SOURCE
+#undef strncat
+#endif
+
+/*
+ * Concatenate src on the end of dst.  At most strlen(dst)+n+1 bytes
+ * are written at dst (at most n+1 bytes being appended).  Return dst.
+ */
+char *
+strncat(char *dst, const char *src, size_t n)
+{
+
+       _DIAGASSERT(dst != NULL);
+       _DIAGASSERT(src != NULL);
+
+       if (n != 0) {
+               char *d = dst;
+               const char *s = src;
+
+               while (*d != 0)
+                       d++;
+               do {
+                       if ((*d = *s++) == 0)
+                               break;
+                       d++;
+               } while (--n != 0);
+               *d = 0;
+       }
+       return (dst);
+}