mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-11 07:40:05 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/* Copyright (C) 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <hurd.h>
|
|
#include <hurd/id.h>
|
|
#include <string.h>
|
|
|
|
int
|
|
__getgroups (n, gidset)
|
|
int n;
|
|
gid_t *gidset;
|
|
{
|
|
error_t err;
|
|
int ngids;
|
|
void *crit;
|
|
|
|
crit = _hurd_critical_section_lock ();
|
|
__mutex_lock (&_hurd_id.lock);
|
|
|
|
if (err = _hurd_check_ids ())
|
|
{
|
|
__mutex_unlock (&_hurd_id.lock);
|
|
_hurd_critical_section_unlock (crit);
|
|
return __hurd_fail (err);
|
|
}
|
|
|
|
ngids = _hurd_id.gen.ngids;
|
|
|
|
if (n != 0)
|
|
{
|
|
/* Copy the gids onto stack storage and then release the idlock. */
|
|
gid_t gids[ngids];
|
|
memcpy (gids, _hurd_id.gen.gids, sizeof (gids));
|
|
__mutex_unlock (&_hurd_id.lock);
|
|
_hurd_critical_section_unlock (crit);
|
|
|
|
/* Now that the lock is released, we can safely copy the
|
|
group set into the user's array, which might fault. */
|
|
if (ngids > n)
|
|
ngids = n;
|
|
memcpy (gidset, gids, ngids * sizeof (gid_t));
|
|
}
|
|
else
|
|
{
|
|
__mutex_unlock (&_hurd_id.lock);
|
|
_hurd_critical_section_unlock (crit);
|
|
}
|
|
|
|
return ngids;
|
|
}
|
|
|
|
weak_alias (__getgroups, getgroups)
|