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author | Jim Meyering <jim@meyering.net> | 1996-10-22 03:15:22 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1996-10-22 03:15:22 +0000 |
commit | 8978c64869b2fd317c025586027da43f46c1369e (patch) | |
tree | 959aa60c9de1c3693dbf801d70527bdd7e468a4a | |
parent | 0fd3107ec725000abb659f0082d744aaf7eae3ca (diff) | |
download | coreutils-8978c64869b2fd317c025586027da43f46c1369e.tar.xz |
.
-rw-r--r-- | lib/group-member.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/lib/group-member.c b/lib/group-member.c deleted file mode 100644 index 9a079e293..000000000 --- a/lib/group-member.c +++ /dev/null @@ -1,151 +0,0 @@ -/* group-member.c -- determine whether group id is in calling user's group list - Copyright (C) 1994 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <stdio.h> -#include <sys/types.h> - -#ifdef STDC_HEADERS -# include <stdlib.h> -#endif - -#ifdef HAVE_UNISTD_H -# include <unistd.h> -#endif - -#include "group-member.h" - -char *xmalloc (); -char *xrealloc (); - -struct group_info - { - int n_groups; - GETGROUPS_T *group; - }; - -#ifdef HAVE_GETGROUPS - -static void -free_group_info (g) - struct group_info *g; -{ - free (g->group); - free (g); -} - -static struct group_info * -get_group_info () -{ - int n_groups; - int n_group_slots; - struct group_info *gi; - GETGROUPS_T *group; - - /* getgroups () returns the number of elements that it was able to - place into the array. We simply continue to call getgroups () - until the number of elements placed into the array is smaller than - the physical size of the array. */ - - group = NULL; - n_groups = 0; - n_group_slots = 0; - while (n_groups == n_group_slots) - { - n_group_slots += 64; - group = (GETGROUPS_T *) xrealloc (group, - n_group_slots * sizeof (GETGROUPS_T)); - n_groups = getgroups (n_group_slots, group); - } - - /* In case of error, the user loses. */ - if (n_groups < 0) - { - free (group); - return NULL; - } - - gi = (struct group_info *) xmalloc (sizeof (*gi)); - gi->n_groups = n_groups; - gi->group = group; - - return gi; -} - -#endif /* not HAVE_GETGROUPS */ - -/* Return non-zero if GID is one that we have in our groups list. - If there is no getgroups function, return non-zero if GID matches - either of the current or effective group IDs. */ - -int -group_member (gid) - gid_t gid; -{ -#ifndef HAVE_GETGROUPS - return ((gid == getgid ()) || (gid == getegid ())); -#else - int i; - int found; - struct group_info *gi; - - gi = get_group_info (); - if (gi == NULL) - return 0; - - /* Search through the list looking for GID. */ - found = 0; - for (i = 0; i < gi->n_groups; i++) - { - if (gid == gi->group[i]) - { - found = 1; - break; - } - } - - free_group_info (gi); - - return found; -#endif /* HAVE_GETGROUPS */ -} - -#ifdef TEST - -char *program_name; - -int -main (int argc, char** argv) -{ - int i; - - program_name = argv[0]; - - for (i=1; i<argc; i++) - { - gid_t gid; - - gid = atoi (argv[i]); - printf ("%d: %s\n", gid, group_member (gid) ? "yes" : "no"); - } - exit (0); -} - -#endif /* TEST */ |