123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/* $MirOS: src/bin/mksh/strlfun.c,v 1.8 2007/01/09 17:34:21 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
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* 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
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* the utmost extent permitted by applicable law, neither express nor
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* implied; without malicious intent or gross negligence. In no event
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* may a licensor, author or contributor be held liable for indirect,
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* direct, other damage, loss, or other issues arising in any way out
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* of dealing in the work, even if advised of the possibility of such
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* damage or existence of a defect, except proven that it results out
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* of said person's immediate fault when using the work as intended.
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*-
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* The strlcat() code below has been written by Thorsten Glaser. Bodo
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* Eggert suggested optimising the strlcpy() code, originally written
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* 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-
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* stems and writing wcslcat(), wcslcpy() and wcsxfrm() equivalents.
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*/
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#ifdef STRXFRM
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#undef HAVE_STRLCPY
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#undef HAVE_STRLCAT
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#define HAVE_STRLCPY 0
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#define HAVE_STRLCAT 1
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#define strlcpy strxfrm
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#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>
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#undef HAVE_STRLCPY
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#undef HAVE_STRLCAT
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#else
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#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
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#include CONFIG_H_FILENAME
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#else
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#include "config.h"
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#endif
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#endif
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#endif
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#ifndef __RCSID
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#undef __IDSTRING
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#undef __IDSTRING_CONCAT
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#undef __IDSTRING_EXPAND
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#if defined(__ELF__) && defined(__GNUC__)
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#define __IDSTRING(prefix, string) \
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__asm__(".section .comment" \
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"\n .ascii \"@(\"\"#)" #prefix ": \"" \
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"\n .asciz \"" string "\"" \
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"\n .previous")
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#else
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#define __IDSTRING_CONCAT(l,p) __LINTED__ ## l ## _ ## p
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#define __IDSTRING_EXPAND(l,p) __IDSTRING_CONCAT(l,p)
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#define __IDSTRING(prefix, string) \
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static const char __IDSTRING_EXPAND(__LINE__,prefix) [] \
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__attribute__((used)) = "@(""#)" #prefix ": " string
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#endif
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#define __RCSID(x) __IDSTRING(rcsid,x)
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#endif
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#ifndef __predict_true
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#define __predict_true(exp) ((exp) != 0)
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#endif
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#ifndef __predict_false
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#define __predict_false(exp) ((exp) != 0)
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#endif
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#if !defined(_KERNEL) && !defined(_STANDALONE)
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__RCSID("$MirOS: src/bin/mksh/strlfun.c,v 1.8 2007/01/09 17:34:21 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 $ */
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/*-
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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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#if !defined(HAVE_STRLCPY) || (HAVE_STRLCPY == 0)
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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 (__predict_false(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 (__predict_false(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 doesn't include NUL */
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return (s - src - 1);
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}
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#endif /* !HAVE_STRLCPY */
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