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Annotation of embedaddon/sudo/common/setgroups.c, revision 1.1.1.2

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"
1.1.1.2 ! misho      39: #include "sudo_debug.h"
1.1       misho      40: 
                     41: int
                     42: sudo_setgroups(int ngids, const GETGROUPS_T *gids)
                     43: {
                     44:     int maxgids, rval;
1.1.1.2 ! misho      45:     debug_decl(sudo_setgroups, SUDO_DEBUG_UTIL)
1.1       misho      46: 
1.1.1.2 ! misho      47:     rval = setgroups(ngids, (GETGROUPS_T *)gids);
1.1       misho      48:     if (rval == -1 && errno == EINVAL) {
                     49:        /* Too many groups, try again with fewer. */
                     50: #if defined(HAVE_SYSCONF) && defined(_SC_NGROUPS_MAX)
                     51:        maxgids = (int)sysconf(_SC_NGROUPS_MAX);
                     52:        if (maxgids == -1)
                     53: #endif
                     54:            maxgids = NGROUPS_MAX;
                     55:        if (ngids > maxgids)
1.1.1.2 ! misho      56:            rval = setgroups(maxgids, (GETGROUPS_T *)gids);
1.1       misho      57:     }
1.1.1.2 ! misho      58:     debug_return_int(rval);
1.1       misho      59: }