2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
21 #include <linux/ioctl.h>
23 #define BTRFS_IOCTL_MAGIC 0x94
24 #define BTRFS_VOL_NAME_MAX 255
25 #define BTRFS_PATH_NAME_MAX 4087
27 /* this should be 4k */
28 struct btrfs_ioctl_vol_args {
30 char name[BTRFS_PATH_NAME_MAX + 1];
33 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
34 struct btrfs_ioctl_ino_lookup_args {
37 char name[BTRFS_INO_LOOKUP_PATH_MAX];
40 struct btrfs_ioctl_search_key {
41 /* which root are we searching. 0 is the tree of tree roots */
44 /* keys returned will be >= min and <= max */
48 /* keys returned will be >= min and <= max */
52 /* max and min transids to search for */
56 /* keys returned will be >= min and <= max */
61 * how many items did userland ask for, and how many are we
66 /* align to 64 bits */
69 /* some extra for later */
76 struct btrfs_ioctl_search_header {
84 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
86 * the buf is an array of search headers where
87 * each header is followed by the actual item
88 * the type field is expanded to 32 bits for alignment
90 struct btrfs_ioctl_search_args {
91 struct btrfs_ioctl_search_key key;
92 char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
95 struct btrfs_ioctl_clone_range_args {
97 __u64 src_offset, src_length;
101 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
102 struct btrfs_ioctl_vol_args)
103 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
104 struct btrfs_ioctl_vol_args)
105 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
106 struct btrfs_ioctl_vol_args)
107 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
108 struct btrfs_ioctl_vol_args)
109 /* trans start and trans end are dangerous, and only for
110 * use by applications that know how to avoid the
111 * resulting deadlocks
113 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
114 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
115 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
117 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
118 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
119 struct btrfs_ioctl_vol_args)
120 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
121 struct btrfs_ioctl_vol_args)
122 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
123 struct btrfs_ioctl_vol_args)
125 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
126 struct btrfs_ioctl_clone_range_args)
128 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
129 struct btrfs_ioctl_vol_args)
130 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
131 struct btrfs_ioctl_vol_args)
132 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
133 struct btrfs_ioctl_search_args)
134 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
135 struct btrfs_ioctl_ino_lookup_args)