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strlcpy.c
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/* $OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $ */
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/*
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* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static
char
*rcsid =
"$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $"
;
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#endif
/* LIBC_SCCS and not lint */
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#include "
ruby/missing.h
"
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#include <sys/types.h>
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#include <string.h>
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/*
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* Copy src to string dst of size siz. At most siz-1 characters
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* will be copied. Always NUL terminates (unless siz == 0).
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* Returns strlen(src); if retval >= siz, truncation occurred.
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*/
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size_t
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strlcpy
(dst, src, siz)
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char *dst;
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const
char
*src;
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size_t
siz;
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{
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register
char
*d = dst;
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register
const
char
*s = src;
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register
size_t
n = siz;
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/* Copy as many bytes as will fit */
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if
(n != 0 && --n != 0) {
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do
{
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if
((*d++ = *s++) == 0)
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break
;
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}
while
(--n != 0);
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}
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/* Not enough room in dst, add NUL and traverse rest of src */
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if
(n == 0) {
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if
(siz != 0)
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*d =
'\0'
;
/* NUL-terminate dst */
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while
(*s++)
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;
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}
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return
(s - src - 1);
/* count does not include NUL */
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}
missing.h
strlcpy
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition:
strlcpy.c:44
const
#define const
Definition:
strftime.c:101
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