mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 11:00:07 +00:00
975320984b
* sysdeps/mach/hurd/setuid.c: Rewrote ID frobnication to do the right thing. * sysdeps/mach/hurd/setgid.c: Likewise. * sysdeps/mach/hurd/setreuid.c: Likewise. * sysdeps/mach/hurd/setregid.c: Likewise. * sysdeps/mach/hurd/setegid.c: Likewise. * sysdeps/mach/hurd/seteuid.c: Likewise. * sysdeps/mach/hurd/fork.c: Peek __mach_task_self_ value before proc_dostop call to work around kernel paging bug. Thu Dec 21 12:19:32 1995 Miles Bader <miles@gnu.ai.mit.edu> * sysdeps/mach/hurd/setuid.c (__setuid): Actually add the new uid instead of putting it (and other uids) in the gids and leaving the old uids as is.
98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
/* Copyright (C) 1993, 1994, 1995 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <hurd.h>
|
|
#include <hurd/id.h>
|
|
#include <string.h>
|
|
|
|
int
|
|
__setreuid (uid_t ruid, uid_t euid)
|
|
{
|
|
auth_t newauth;
|
|
error_t err;
|
|
|
|
HURD_CRITICAL_BEGIN;
|
|
__mutex_lock (&_hurd_id.lock);
|
|
err = _hurd_check_ids ();
|
|
|
|
if (!err)
|
|
{
|
|
/* Make a new auth handle which has RUID as the real uid,
|
|
and EUID as the first element in the list of effective uids. */
|
|
|
|
uid_t *newgen, *newaux;
|
|
size_t ngen, naux;
|
|
|
|
newgen = _hurd_id.gen.uids;
|
|
ngen = _hurd_id.gen.nuids;
|
|
if (euid != -1)
|
|
{
|
|
if (_hurd_id.gen.nuids == 0)
|
|
{
|
|
/* No effective uids now. The new set will be just UID. */
|
|
newgen = &euid;
|
|
ngen = 1;
|
|
}
|
|
else
|
|
{
|
|
_hurd_id.gen.uids[0] = euid;
|
|
_hurd_id.valid = 0;
|
|
}
|
|
}
|
|
|
|
newaux = _hurd_id.aux.uids;
|
|
naux = _hurd_id.aux.nuids;
|
|
if (ruid != -1)
|
|
{
|
|
if (_hurd_id.aux.nuids == 0)
|
|
{
|
|
newaux = &ruid;
|
|
naux = 1;
|
|
}
|
|
else
|
|
{
|
|
_hurd_id.aux.uids[0] = ruid;
|
|
_hurd_id.valid = 0;
|
|
}
|
|
}
|
|
|
|
err = __USEPORT (AUTH, __auth_makeauth
|
|
(port, NULL, MACH_MSG_TYPE_COPY_SEND, 0,
|
|
newgen, ngen, newaux, naux,
|
|
_hurd_id.gen.gids, _hurd_id.gen.ngids,
|
|
_hurd_id.aux.gids, _hurd_id.aux.ngids,
|
|
&newauth));
|
|
}
|
|
__mutex_unlock (&_hurd_id.lock);
|
|
HURD_CRITICAL_END;
|
|
|
|
if (err)
|
|
return __hurd_fail (err);
|
|
|
|
/* Install the new handle and reauthenticate everything. */
|
|
err = __setauth (newauth);
|
|
__mach_port_deallocate (__mach_task_self (), newauth);
|
|
return err;
|
|
}
|
|
|
|
weak_alias (__setreuid, setreuid)
|