mksh/strlfun.c

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/* $MirOS: src/bin/mksh/strlfun.c,v 1.9 2007/01/12 01:49:29 tg Exp $ */
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/* $miros: src/lib/libc/string/strlfun.c,v 1.14 2007/01/07 02:11:40 tg Exp $ */
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/*-
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* Copyright (c) 2006
* Thorsten Glaser <tg@mirbsd.de>
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*
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* This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
* the utmost extent permitted by applicable law, neither express nor
* implied; without malicious intent or gross negligence. In no event
* may a licensor, author or contributor be held liable for indirect,
* direct, other damage, loss, or other issues arising in any way out
* of dealing in the work, even if advised of the possibility of such
* damage or existence of a defect, except proven that it results out
* of said person's immediate fault when using the work as intended.
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*-
* The strlcat() code below has been written by Thorsten Glaser. Bodo
* Eggert suggested optimising the strlcpy() code, originally written
* by Todd C. Miller (see below), which was carried out by Th. Glaser
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* as well as merging this code with strxfrm() for ISO-10646-only sy-
* stems and writing wcslcat(), wcslcpy() and wcsxfrm() equivalents.
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*/
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#ifdef STRXFRM
#undef HAVE_STRLCPY
#undef HAVE_STRLCAT
#define HAVE_STRLCPY 0
#define HAVE_STRLCAT 1
#define strlcpy strxfrm
#endif
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#include <sys/types.h>
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#if defined(_KERNEL) || defined(_STANDALONE)
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#include <lib/libkern/libkern.h>
#undef HAVE_STRLCPY
#undef HAVE_STRLCAT
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#else
#if defined(HAVE_CONFIG_H) && (HAVE_CONFIG_H != 0)
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/* usually when packaged with third-party software */
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#ifdef CONFIG_H_FILENAME
#include CONFIG_H_FILENAME
#else
#include "config.h"
#endif
#endif
#endif
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#ifndef __predict_true
#define __predict_true(exp) ((exp) != 0)
#endif
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#ifndef __predict_false
#define __predict_false(exp) ((exp) != 0)
#endif
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#if !defined(_KERNEL) && !defined(_STANDALONE)
__RCSID("$MirOS: src/bin/mksh/strlfun.c,v 1.9 2007/01/12 01:49:29 tg Exp $");
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#endif
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size_t strlcpy(char *, const char *, size_t);
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/* $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie Exp $ */
/*-
* 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.
*/
#if !defined(HAVE_STRLCPY) || (HAVE_STRLCPY == 0)
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/*
* 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.
*/
size_t
strlcpy(char *dst, const char *src, size_t siz)
{
const char *s = src;
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if (__predict_false(siz == 0))
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goto traverse_src;
/* copy as many chars as will fit */
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while (--siz && (*dst++ = *s++))
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;
/* not enough room in dst */
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if (__predict_false(siz == 0)) {
/* safe to NUL-terminate dst since we copied <= siz-1 chars */
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*dst = '\0';
traverse_src:
/* traverse rest of src */
while (*s++)
;
}
/* count doesn't include NUL */
return (s - src - 1);
}
#endif /* !HAVE_STRLCPY */