source: trunk/server/source3/include/locking.h@ 596

Last change on this file since 596 was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import

File size: 3.0 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 SMB parameters and setup, plus a whole lot more.
4
5 Copyright (C) Jeremy Allison 2006
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#ifndef _LOCKING_H
22#define _LOCKING_H
23
24/* passed to br lock code - the UNLOCK_LOCK should never be stored into the tdb
25 and is used in calculating POSIX unlock ranges only. We differentiate between
26 PENDING read and write locks to allow posix lock downgrades to trigger a lock
27 re-evaluation. */
28
29enum brl_type {READ_LOCK, WRITE_LOCK, PENDING_READ_LOCK, PENDING_WRITE_LOCK, UNLOCK_LOCK};
30enum brl_flavour {WINDOWS_LOCK = 0, POSIX_LOCK = 1};
31
32#define IS_PENDING_LOCK(type) ((type) == PENDING_READ_LOCK || (type) == PENDING_WRITE_LOCK)
33