4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* $NetBSD: strlcpy.c,v 1.3 2007/06/04 18:19:27 christos Exp $ */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* $OpenBSD: strlcpy.c,v 1.7 2003/04/12 21:56:39 millert Exp $ */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Permission to use, copy, modify, and distribute this software for any
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * purpose with or without fee is hereby granted, provided that the above
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * copyright notice and this permission notice appear in all copies.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THE SOFTWARE IS PROVIDED "AS IS" AND TODD C. MILLER DISCLAIMS ALL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER BE LIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <LibConfig.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if !defined(_KERNEL) && !defined(_STANDALONE)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if HAVE_NBTOOL_CONFIG_H
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include "nbtool_config.h"
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/cdefs.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(LIBC_SCCS) && !defined(lint)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__RCSID("$NetBSD: strlcpy.c,v 1.3 2007/06/04 18:19:27 christos Exp $");
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* LIBC_SCCS and not lint */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef _LIBC
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include "namespace.h"
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/types.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <assert.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <string.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef _LIBC
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync# ifdef __weak_alias
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__weak_alias(strlcpy, _strlcpy)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync# endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <lib/libkern/libkern.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* !_KERNEL && !_STANDALONE */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if !HAVE_STRLCPY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copy src to string dst of size siz. At most siz-1 characters
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * will be copied. Always NUL terminates (unless siz == 0).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Returns strlen(src); if retval >= siz, truncation occurred.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncsize_t
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstrlcpy(char *dst, const char *src, size_t siz)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync char *d = dst;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync const char *s = src;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync size_t n = siz;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _DIAGASSERT(dst != NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _DIAGASSERT(src != NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* Copy as many bytes as will fit */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (n != 0 && --n != 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync do {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((*d++ = *s++) == 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync break;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } while (--n != 0);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /* Not enough room in dst, add NUL and traverse rest of src */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (n == 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (siz != 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *d = '\0'; /* NUL-terminate dst */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync while (*s++)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return(s - src - 1); /* count does not include NUL */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif