/*
 * Copyright (c) 1983 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.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)initgroups.c        5.7 (Berkeley) 2/23/91";
#endif /* LIBC_SCCS and not lint */

/*
 * initgroups
 */
#define _KERNEL
#include "ixnet.h"
#include <sys/param.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <grp.h>

struct group *getgrent();

int
initgroups(const char *uname, int agroup)
{
    usetup;
    int groups[NGROUPS], ngroups = 0;
    register struct group *grp;
    register int i;
    register struct ixnet *p = (struct ixnet *)u.u_ixnet;

    if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
        return UG_initgroups(uname,agroup);
    }

    /*
     * If installing primary group, duplicate it;
     * the first element of groups is the effective gid
     * and will be overwritten when a setgid file is executed.
     */
        if (agroup >= 0) {
                groups[ngroups++] = agroup;
                groups[ngroups++] = agroup;
        }
        setgrent();
	while ((grp = getgrent())) {
                if (grp->gr_gid == agroup)
                        continue;
                for (i = 0; grp->gr_mem[i]; i++)
                        if (!strcmp(grp->gr_mem[i], uname)) {
                                if (ngroups == NGROUPS) {
fprintf(stderr, "initgroups: %s is in too many groups\n", uname);
                                        goto toomany;
                                }
                                groups[ngroups++] = grp->gr_gid;
                        }
        }
toomany:
        endgrent();
        if (setgroups(ngroups, groups) < 0) {
                perror("setgroups");
                return (-1);
        }
        return (0);
}