strdup.c

来自「Linux下的socks的程序源程序,用于socks的代理服务」· C语言 代码 · 共 50 行

/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strdup.c	5.3 (Berkeley) 6/1/90";
#endif /* LIBC_SCCS and not lint */

#include <sys/types.h>
#ifdef	NO_STRING_H
#include <strings.h>
#else
#include <string.h>
#endif

#ifdef SOLARIS
/* for bcopy() and bzero() */
#include "bstring.h"
#endif


char *
strdup(str)
	char *str;
{
	int len;
	char *copy, *malloc();

	len = strlen(str) + 1;
	if (!(copy = malloc((u_int)len)))
		return((char *)0);
	bcopy(str, copy, len);
	return(copy);
}