NetBSD/lib/libc/string/strdup.c

61 lines
2.3 KiB
C
Raw Normal View History

/* $NetBSD: strdup.c,v 1.7 1997/07/13 20:24:25 christos Exp $ */
1993-03-21 12:45:37 +03:00
/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
1993-03-21 12:45:37 +03:00
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char *sccsid = "@(#)strdup.c 5.4 (Berkeley) 2/24/91";
#else
__RCSID("$NetBSD: strdup.c,v 1.7 1997/07/13 20:24:25 christos Exp $");
#endif
1993-03-21 12:45:37 +03:00
#endif /* LIBC_SCCS and not lint */
#include <stdlib.h>
#include <string.h>
char *
strdup(str)
const char *str;
{
size_t len;
1993-03-21 12:45:37 +03:00
char *copy;
len = strlen(str) + 1;
if (!(copy = malloc(len)))
1993-03-21 12:45:37 +03:00
return((char *)NULL);
1995-04-14 23:25:13 +04:00
memcpy(copy, str, len);
1993-03-21 12:45:37 +03:00
return(copy);
}