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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
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. | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | */ | |
18 | ||
c5739bba CM |
19 | #ifndef __IOCTL_ |
20 | #define __IOCTL_ | |
21 | #include <linux/ioctl.h> | |
22 | ||
23 | #define BTRFS_IOCTL_MAGIC 0x94 | |
24 | #define BTRFS_VOL_NAME_MAX 255 | |
8a4b83cc | 25 | |
c071fcfd | 26 | /* this should be 4k */ |
72fd032e | 27 | #define BTRFS_PATH_NAME_MAX 4087 |
c5739bba | 28 | struct btrfs_ioctl_vol_args { |
3de4586c | 29 | __s64 fd; |
8a4b83cc | 30 | char name[BTRFS_PATH_NAME_MAX + 1]; |
c5739bba CM |
31 | }; |
32 | ||
fdfb1e4f | 33 | #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) |
b83cc969 | 34 | #define BTRFS_SUBVOL_RDONLY (1ULL << 1) |
fdfb1e4f LZ |
35 | |
36 | #define BTRFS_SUBVOL_NAME_MAX 4039 | |
37 | struct btrfs_ioctl_vol_args_v2 { | |
72fd032e SW |
38 | __s64 fd; |
39 | __u64 transid; | |
fdfb1e4f LZ |
40 | __u64 flags; |
41 | __u64 unused[4]; | |
42 | char name[BTRFS_SUBVOL_NAME_MAX + 1]; | |
72fd032e SW |
43 | }; |
44 | ||
ac8e9819 CM |
45 | #define BTRFS_INO_LOOKUP_PATH_MAX 4080 |
46 | struct btrfs_ioctl_ino_lookup_args { | |
47 | __u64 treeid; | |
48 | __u64 objectid; | |
49 | char name[BTRFS_INO_LOOKUP_PATH_MAX]; | |
50 | }; | |
51 | ||
52 | struct btrfs_ioctl_search_key { | |
53 | /* which root are we searching. 0 is the tree of tree roots */ | |
54 | __u64 tree_id; | |
55 | ||
56 | /* keys returned will be >= min and <= max */ | |
57 | __u64 min_objectid; | |
58 | __u64 max_objectid; | |
59 | ||
60 | /* keys returned will be >= min and <= max */ | |
61 | __u64 min_offset; | |
62 | __u64 max_offset; | |
63 | ||
64 | /* max and min transids to search for */ | |
65 | __u64 min_transid; | |
66 | __u64 max_transid; | |
67 | ||
68 | /* keys returned will be >= min and <= max */ | |
69 | __u32 min_type; | |
70 | __u32 max_type; | |
71 | ||
72 | /* | |
73 | * how many items did userland ask for, and how many are we | |
74 | * returning | |
75 | */ | |
76 | __u32 nr_items; | |
77 | ||
78 | /* align to 64 bits */ | |
79 | __u32 unused; | |
80 | ||
81 | /* some extra for later */ | |
82 | __u64 unused1; | |
83 | __u64 unused2; | |
84 | __u64 unused3; | |
85 | __u64 unused4; | |
86 | }; | |
87 | ||
88 | struct btrfs_ioctl_search_header { | |
89 | __u64 transid; | |
90 | __u64 objectid; | |
91 | __u64 offset; | |
92 | __u32 type; | |
93 | __u32 len; | |
94 | }; | |
95 | ||
96 | #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) | |
97 | /* | |
98 | * the buf is an array of search headers where | |
99 | * each header is followed by the actual item | |
100 | * the type field is expanded to 32 bits for alignment | |
101 | */ | |
102 | struct btrfs_ioctl_search_args { | |
103 | struct btrfs_ioctl_search_key key; | |
104 | char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; | |
105 | }; | |
106 | ||
c071fcfd CM |
107 | struct btrfs_ioctl_clone_range_args { |
108 | __s64 src_fd; | |
109 | __u64 src_offset, src_length; | |
110 | __u64 dest_offset; | |
111 | }; | |
112 | ||
1e701a32 CM |
113 | /* flags for the defrag range ioctl */ |
114 | #define BTRFS_DEFRAG_RANGE_COMPRESS 1 | |
115 | #define BTRFS_DEFRAG_RANGE_START_IO 2 | |
116 | ||
117 | struct btrfs_ioctl_defrag_range_args { | |
118 | /* start of the defrag operation */ | |
119 | __u64 start; | |
120 | ||
121 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
122 | __u64 len; | |
123 | ||
124 | /* | |
125 | * flags for the operation, which can include turning | |
126 | * on compression for this one defrag | |
127 | */ | |
128 | __u64 flags; | |
129 | ||
130 | /* | |
131 | * any extent bigger than this will be considered | |
132 | * already defragged. Use 0 to take the kernel default | |
133 | * Use 1 to say every single extent must be rewritten | |
134 | */ | |
135 | __u32 extent_thresh; | |
136 | ||
1a419d85 LZ |
137 | /* |
138 | * which compression method to use if turning on compression | |
139 | * for this defrag operation. If unspecified, zlib will | |
140 | * be used | |
141 | */ | |
142 | __u32 compress_type; | |
143 | ||
1e701a32 | 144 | /* spare for later */ |
1a419d85 | 145 | __u32 unused[4]; |
1e701a32 CM |
146 | }; |
147 | ||
1406e432 | 148 | struct btrfs_ioctl_space_info { |
ce769a29 SW |
149 | __u64 flags; |
150 | __u64 total_bytes; | |
151 | __u64 used_bytes; | |
1406e432 JB |
152 | }; |
153 | ||
154 | struct btrfs_ioctl_space_args { | |
ce769a29 SW |
155 | __u64 space_slots; |
156 | __u64 total_spaces; | |
1406e432 JB |
157 | struct btrfs_ioctl_space_info spaces[0]; |
158 | }; | |
1e701a32 | 159 | |
c5739bba CM |
160 | #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ |
161 | struct btrfs_ioctl_vol_args) | |
6702ed49 | 162 | #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ |
8352d8a4 | 163 | struct btrfs_ioctl_vol_args) |
edbd8d4e CM |
164 | #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ |
165 | struct btrfs_ioctl_vol_args) | |
8a4b83cc CM |
166 | #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ |
167 | struct btrfs_ioctl_vol_args) | |
6bf13c0c SW |
168 | /* trans start and trans end are dangerous, and only for |
169 | * use by applications that know how to avoid the | |
170 | * resulting deadlocks | |
171 | */ | |
172 | #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) | |
173 | #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) | |
174 | #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) | |
175 | ||
f2eb0a24 | 176 | #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) |
788f20eb CM |
177 | #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ |
178 | struct btrfs_ioctl_vol_args) | |
179 | #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ | |
180 | struct btrfs_ioctl_vol_args) | |
181 | #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ | |
182 | struct btrfs_ioctl_vol_args) | |
c5c9cd4d SW |
183 | |
184 | #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ | |
185 | struct btrfs_ioctl_clone_range_args) | |
186 | ||
3de4586c CM |
187 | #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ |
188 | struct btrfs_ioctl_vol_args) | |
76dda93c YZ |
189 | #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ |
190 | struct btrfs_ioctl_vol_args) | |
1e701a32 CM |
191 | #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ |
192 | struct btrfs_ioctl_defrag_range_args) | |
ac8e9819 CM |
193 | #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ |
194 | struct btrfs_ioctl_search_args) | |
195 | #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ | |
196 | struct btrfs_ioctl_ino_lookup_args) | |
6ef5ed0d | 197 | #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64) |
1406e432 JB |
198 | #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ |
199 | struct btrfs_ioctl_space_args) | |
46204592 SW |
200 | #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) |
201 | #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) | |
fdfb1e4f LZ |
202 | #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ |
203 | struct btrfs_ioctl_vol_args_v2) | |
0caa102d LZ |
204 | #define BTRFS_IOC_SUBVOL_GETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 25, __u64) |
205 | #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) | |
c5739bba | 206 | #endif |