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Annotation of embedaddon/sudo/common/setgroups.c, revision 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: }