/*-

 * Copyright (c) 2006, 2008, 2009, 2013

 *	mirabilos <m@mirbsd.org>

 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>

 *

 * Permission to use, copy, modify, and distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 */

#include "sh.h"

__RCSID("$MirOS: src/bin/mksh/strlcpy.c,v 1.10 2015/11/29 17:05:02 tg Exp $");

/*

 * Copy src to string dst of size siz. At most siz-1 characters

 * will be copied. Always NUL terminates (unless siz == 0).

 * Returns strlen(src); if retval >= siz, truncation occurred.

 */

#undef strlcpy

size_t

strlcpy(char *dst, const char *src, size_t siz)

{

	const char *s = src;

	if (siz == 0)

		goto traverse_src;

	/* copy as many chars as will fit */

	while (--siz && (*dst++ = *s++))

		;

	/* not enough room in dst */

	if (siz == 0) {

		/* safe to NUL-terminate dst since we copied <= siz-1 chars */

		*dst = '\0';

 traverse_src:

		/* traverse rest of src */

		while (*s++)

			;

	}

	/* count does not include NUL */

	return ((size_t)(s - src - 1));

}