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git.ipfire.org Git - thirdparty/rsync.git/blob - getgroups.c
2 * Print out the gids of all groups for the current user. This is like
3 * `id -G` on Linux, but it's too hard to find a portable equivalent.
5 * Copyright (C) 2002 Martin Pool
6 * Copyright (C) 2003-2007 Wayne Davison
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
25 main(UNUSED(int argc
), UNUSED(char *argv
[]))
33 if ((n
= getgroups(0, NULL
)) < 0) {
41 list
= (gid_t
*)malloc(sizeof (gid_t
) * (n
+ 1));
43 fprintf(stderr
, "out of memory!\n");
49 n
= getgroups(n
, list
);
52 for (i
= 0; i
< n
; i
++) {
53 printf("%lu ", (unsigned long)list
[i
]);
57 /* The default gid might not be in the list on some systems. */
59 printf("%lu", (unsigned long)gid
);