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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <string.h>
#include <sys/types.h>
/*
* Appends src to the dstsize buffer at dst. The append will never
* overflow the destination buffer and the buffer will always be null
* terminated. Never reference beyond &dst[dstsize-1] when computing
* the length of the pre-existing string.
*/
size_t
strlcat(char *dst, const char *src, size_t dstsize)
{
char *df = dst;
size_t left = dstsize;
size_t l1;
size_t l2 = strlen(src);
size_t copied;
while (left-- != 0 && *df != '\0')
df++;
l1 = df - dst;
if (dstsize == l1)
return (l1 + l2);
copied = l1 + l2 >= dstsize ? dstsize - l1 - 1 : l2;
(void) memcpy(dst + l1, src, copied);
dst[l1+copied] = '\0';
return (l1 + l2);
}
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