1/*
2 * getgrgid.c - This file is part of the libc-8086/grp package for ELKS,
3 * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
4 *
5 *  This library is free software; you can redistribute it and/or
6 *  modify it under the terms of the GNU Library General Public
7 *  License as published by the Free Software Foundation; either
8 *  version 2 of the License, or (at your option) any later version.
9 *
10 *  This library is distributed in the hope that it will be useful,
11 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 *  Library General Public License for more details.
14 *
15 *  You should have received a copy of the GNU Library General Public
16 *  License along with this library; if not, write to the Free
17 *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 *
19 */
20
21#include <sys/types.h>
22#include <unistd.h>
23#include <fcntl.h>
24#include "grp.h"
25
26struct group *getgrgid(const gid_t gid)
27{
28	struct group *group;
29	int grp_fd;
30
31	if ((grp_fd = open("/etc/group", O_RDONLY)) < 0)
32		return NULL;
33
34	while ((group = __getgrent(grp_fd)) != NULL)
35		if (group->gr_gid == gid) {
36			close(grp_fd);
37			return group;
38		}
39
40	close(grp_fd);
41	return NULL;
42}
43