53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*-
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* Copyright (c) 2006, 2008
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* Thorsten Glaser <tg@mirbsd.org>
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* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/strlcpy.c,v 1.5 2009/05/16 18:57:54 tg Rel $");
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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(char *dst, const char *src, size_t siz)
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{
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const char *s = src;
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if (siz == 0)
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goto traverse_src;
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/* copy as many chars as will fit */
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while (--siz && (*dst++ = *s++))
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;
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/* not enough room in dst */
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if (siz == 0) {
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/* safe to NUL-terminate dst since we copied <= siz-1 chars */
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*dst = '\0';
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traverse_src:
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/* traverse rest of src */
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while (*s++)
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;
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}
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/* count does not include NUL */
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return (s - src - 1);
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}
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