/* group-member.c -- determine whether group id is in calling user's group list
- Copyright (C) 1994, 1997, 1998, 2003, 2005, 2006 Free Software
+ Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2010 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
struct group_info
{
int n_groups;
- GETGROUPS_T *group;
+ gid_t *group;
};
-#if HAVE_GETGROUPS
-
static void
free_group_info (struct group_info const *g)
{
{
int n_groups;
int n_group_slots = getgroups (0, NULL);
- GETGROUPS_T *group;
+ gid_t *group;
if (n_group_slots < 0)
return false;
return true;
}
-#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. */
+ Note that the groups list is not guaranteed to contain the current
+ or effective group ID, so they should generally be checked
+ separately. */
int
group_member (gid_t gid)
{
-#ifndef HAVE_GETGROUPS
- return ((gid == getgid ()) || (gid == getegid ()));
-#else
int i;
int found;
struct group_info gi;
for (i = 0; i < gi.n_groups; i++)
{
if (gid == gi.group[i])
- {
- found = 1;
- break;
- }
+ {
+ found = 1;
+ break;
+ }
}
free_group_info (&gi);
return found;
-#endif /* HAVE_GETGROUPS */
}
#ifdef TEST
program_name = argv[0];
- for (i=1; i<argc; i++)
+ for (i = 1; i < argc; i++)
{
gid_t gid;