ia64/linux-2.6.18-xen.hg

view fs/ocfs2/ocfs2_lockid.h @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents 831230e53067
children
line source
1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * ocfs2_lockid.h
5 *
6 * Defines OCFS2 lockid bits.
7 *
8 * Copyright (C) 2002, 2005 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 */
26 #ifndef OCFS2_LOCKID_H
27 #define OCFS2_LOCKID_H
29 /* lock ids are made up in the following manner:
30 * name[0] --> type
31 * name[1-6] --> 6 pad characters, reserved for now
32 * name[7-22] --> block number, expressed in hex as 16 chars
33 * name[23-30] --> i_generation, expressed in hex 8 chars
34 * name[31] --> '\0' */
35 #define OCFS2_LOCK_ID_MAX_LEN 32
36 #define OCFS2_LOCK_ID_PAD "000000"
38 enum ocfs2_lock_type {
39 OCFS2_LOCK_TYPE_META = 0,
40 OCFS2_LOCK_TYPE_DATA,
41 OCFS2_LOCK_TYPE_SUPER,
42 OCFS2_LOCK_TYPE_RENAME,
43 OCFS2_LOCK_TYPE_RW,
44 OCFS2_NUM_LOCK_TYPES
45 };
47 static inline char ocfs2_lock_type_char(enum ocfs2_lock_type type)
48 {
49 char c;
50 switch (type) {
51 case OCFS2_LOCK_TYPE_META:
52 c = 'M';
53 break;
54 case OCFS2_LOCK_TYPE_DATA:
55 c = 'D';
56 break;
57 case OCFS2_LOCK_TYPE_SUPER:
58 c = 'S';
59 break;
60 case OCFS2_LOCK_TYPE_RENAME:
61 c = 'R';
62 break;
63 case OCFS2_LOCK_TYPE_RW:
64 c = 'W';
65 break;
66 default:
67 c = '\0';
68 }
70 return c;
71 }
73 #endif /* OCFS2_LOCKID_H */