Annotation of embedaddon/sudo/common/setgroups.c, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (c) 2011 Todd C. Miller <Todd.Miller@courtesan.com>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
16: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
17: */
18:
19: #include <config.h>
20:
21: #include <sys/types.h>
22: #include <stdio.h>
23: #ifdef STDC_HEADERS
24: # include <stdlib.h>
25: # include <stddef.h>
26: #else
27: # ifdef HAVE_STDLIB_H
28: # include <stdlib.h>
29: # endif
30: #endif /* STDC_HEADERS */
31: #ifdef HAVE_UNISTD_H
32: # include <unistd.h>
33: #endif /* HAVE_UNISTD_H */
34: #include <errno.h>
35: #include <grp.h>
36: #include <limits.h>
37:
38: #include "missing.h"
39:
40: int
41: sudo_setgroups(int ngids, const GETGROUPS_T *gids)
42: {
43: int maxgids, rval;
44:
45: rval = setgroups(ngids, gids);
46: if (rval == -1 && errno == EINVAL) {
47: /* Too many groups, try again with fewer. */
48: #if defined(HAVE_SYSCONF) && defined(_SC_NGROUPS_MAX)
49: maxgids = (int)sysconf(_SC_NGROUPS_MAX);
50: if (maxgids == -1)
51: #endif
52: maxgids = NGROUPS_MAX;
53: if (ngids > maxgids)
54: rval = setgroups(maxgids, gids);
55: }
56: return rval;
57: }
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