HAMMER VFS - Version 4 part 1/many - UNDO FIFO layout work.
[dragonfly.git] / sys / vfs / hammer / hammer_mount.h
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1/*
2 * Copyright (c) 2007 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
67863d04 34 * $DragonFly: src/sys/vfs/hammer/hammer_mount.h,v 1.11 2008/09/17 21:44:20 dillon Exp $
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35 */
36
37#ifndef _SYS_TYPES_H_
38#include <sys/types.h>
39#endif
40#ifndef _SYS_MOUNT_H_
41#include <sys/mount.h>
42#endif
43
44/*
45 * This structure is passed from userland to the kernel during the mount
46 * system call.
47 */
48struct hammer_mount_info {
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49 const char **volumes; /* array of pointers to device names */
50 int nvolumes; /* number of devices */
195c19a1 51 int hflags; /* extended hammer mount flags */
732a1697 52 int master_id; /* -1=no-mirror mode, or 0-15 */
7f7c1f84 53 u_int64_t asof; /* asof - HAMMER_MAX_TID is current */
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54 char reserved1[136]; /* was struct export_args */
55 u_int64_t reserved2[15];
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56};
57
195c19a1 58#define HMNT_NOHISTORY 0x00000001
732a1697 59#define HMNT_MASTERID 0x00000002 /* master_id field set */
5de0c0e5 60#define HMNT_EXPORTREQ 0x00000004
1b0ab2c3 61#define HMNT_UNDO_DIRTY 0x00000008
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62#define HMNT_STAGE2 0x00000010 /* ran stage-2 recovery */
63#define HMNT_HASREDO 0x00000020 /* stage-2 must scan for REDO */
195c19a1 64
5de0c0e5 65#define HMNT_USERFLAGS (HMNT_NOHISTORY | HMNT_MASTERID)
51c35492 66