glibc/hurd/geteuids.c
Roland McGrath aab217f3ee 1998-12-04 Mark Kettenis <kettenis@phys.uva.nl>
Provide backwards binary compatibility for the Hurd.
	* hurd/geteuids.c [PIC && DO_VERSIONING]: Make __getuids a weak
	alias for geteuids.
	* hurd/Versions [GLIBC_2.0]: Add __getuids,
	__hurd_file_name_lookup and _hurd_umask.
	[GLIBC_2.1]: Add _hurd_proc_init.
	* hurd/Makefile [versioning] (routines): Add compat-20.
	(shared-only-routines): Likewise.
	* hurd/hurdinit.c (_hurd_new_proc_init): Renamed from
	_hurd_proc_init.  Use it as the default _hurd_proc_init version
	for GLIBC_2.1.
	* hurd/compat-20.c: New file.
	* mach/Versions [GLIBC_2.0]: Add __vm_allocate.
1998-12-04 13:47:40 +00:00

70 lines
2.0 KiB
C

/* Copyright (C) 1993, 94, 96, 97, 98 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <hurd.h>
#include <hurd/id.h>
#include <string.h>
int
geteuids (int n, uid_t *uidset)
{
error_t err;
int nuids;
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);
}
nuids = _hurd_id.gen.nuids;
if (n != 0)
{
/* Copy the uids onto stack storage and then release the idlock. */
uid_t uids[nuids];
memcpy (uids, _hurd_id.gen.uids, sizeof (uids));
__mutex_unlock (&_hurd_id.lock);
_hurd_critical_section_unlock (crit);
/* Now that the lock is released, we can safely copy the
uid set into the user's array, which might fault. */
if (nuids > n)
nuids = n;
memcpy (uidset, uids, nuids * sizeof (uid_t));
}
else
{
__mutex_unlock (&_hurd_id.lock);
_hurd_critical_section_unlock (crit);
}
return nuids;
}
/* XXX Remove this alias when we bump the libc soname. */
#if defined PIC && DO_VERSIONING
weak_alias (geteuids, __getuids)
#endif