/* getugroups.c -- return a list of the groups a user is in
- Copyright (C) 1990, 1991 Free Software Foundation.
+ Copyright (C) 1990, 1991, 1998 Free Software Foundation.
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
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by David MacKenzie. */
#ifdef HAVE_CONFIG_H
-#include <config.h>
+# include <config.h>
#endif
#include <sys/types.h>
#include <grp.h>
#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+# include <unistd.h>
#endif
/* setgrent, getgrent, and endgrent are not specified by POSIX.1,
struct group *getgrent ();
#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
-#include <string.h>
+# include <string.h>
#else
-#include <strings.h>
+# include <strings.h>
#endif
/* Like `getgroups', but for user USERNAME instead of for
the current process. */
int
-getugroups (maxcount, grouplist, username)
- int maxcount;
- GETGROUPS_T *grouplist;
- char *username;
+getugroups (int maxcount, GETGROUPS_T *grouplist, char *username)
{
struct group *grp;
register char **cp;
for (cp = grp->gr_mem; *cp; ++cp)
if (!strcmp (username, *cp))
{
- if (maxcount != 0)
+ int n;
+
+ /* See if this group number is already on the list. */
+ for (n = 0; n < count; ++n)
+ if (grouplist[n] == grp->gr_gid)
+ break;
+
+ /* If it's a new group number, then try to add it to the list. */
+ if (n == count)
{
- if (count >= maxcount)
+ if (maxcount != 0)
{
- endgrent ();
- return count;
+ if (count >= maxcount)
+ {
+ endgrent ();
+ return count;
+ }
+ grouplist[count] = grp->gr_gid;
}
- grouplist[count] = grp->gr_gid;
+ count++;
}
- count++;
}
endgrent ();
return count;