Root/fs/ocfs2/ocfs2_ioctl.h

1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * ocfs2_ioctl.h
5 *
6 * Defines OCFS2 ioctls.
7 *
8 * Copyright (C) 2010 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, version 2, as published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 */
19
20#ifndef OCFS2_IOCTL_H
21#define OCFS2_IOCTL_H
22
23/*
24 * ioctl commands
25 */
26#define OCFS2_IOC_GETFLAGS _IOR('f', 1, long)
27#define OCFS2_IOC_SETFLAGS _IOW('f', 2, long)
28#define OCFS2_IOC32_GETFLAGS _IOR('f', 1, int)
29#define OCFS2_IOC32_SETFLAGS _IOW('f', 2, int)
30
31/*
32 * Space reservation / allocation / free ioctls and argument structure
33 * are designed to be compatible with XFS.
34 *
35 * ALLOCSP* and FREESP* are not and will never be supported, but are
36 * included here for completeness.
37 */
38struct ocfs2_space_resv {
39    __s16 l_type;
40    __s16 l_whence;
41    __s64 l_start;
42    __s64 l_len; /* len == 0 means until end of file */
43    __s32 l_sysid;
44    __u32 l_pid;
45    __s32 l_pad[4]; /* reserve area */
46};
47
48#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv)
49#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv)
50#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv)
51#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv)
52#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv)
53#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv)
54#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv)
55#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv)
56
57/* Used to pass group descriptor data when online resize is done */
58struct ocfs2_new_group_input {
59    __u64 group; /* Group descriptor's blkno. */
60    __u32 clusters; /* Total number of clusters in this group */
61    __u32 frees; /* Total free clusters in this group */
62    __u16 chain; /* Chain for this group */
63    __u16 reserved1;
64    __u32 reserved2;
65};
66
67#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int)
68#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input)
69#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input)
70
71/* Used to pass 2 file names to reflink. */
72struct reflink_arguments {
73    __u64 old_path;
74    __u64 new_path;
75    __u64 preserve;
76};
77#define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments)
78
79#endif /* OCFS2_IOCTL_H */
80

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