shadow/lib/groupmem.c

/*
 * Copyright (c) 1990 - 1994, Julianne Frances Haugh
 * Copyright (c) 1996 - 2000, Marek Michałkiewicz
 * Copyright (c) 2001       , Michał Moskal
 * Copyright (c) 2005       , Tomasz Kłoczko
 * Copyright (c) 2007       , Nicolas François
 * 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. The name of the copyright holders or contributors may not be used to
 *    endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
 * HOLDERS 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 <config.h>

#ident "$Id$"

#include "prototypes.h"
#include "defines.h"
#include "groupio.h"

struct group *__gr_dup (const struct group *grent)
{
	struct group *gr;
	int i;

	if (!(gr = (struct group *) malloc (sizeof *gr)))
		return NULL;
	*gr = *grent;
	if (!(gr->gr_name = strdup (grent->gr_name)))
		return NULL;
	if (!(gr->gr_passwd = strdup (grent->gr_passwd)))
		return NULL;

	for (i = 0; grent->gr_mem[i]; i++);
	gr->gr_mem = (char **) malloc ((i + 1) * sizeof (char *));
	if (!gr->gr_mem)
		return NULL;
	for (i = 0; grent->gr_mem[i]; i++) {
		gr->gr_mem[i] = strdup (grent->gr_mem[i]);
		if (!gr->gr_mem[i])
			return NULL;
	}
	gr->gr_mem[i] = NULL;
	return gr;
}