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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 | ||
55e301fd FB |
19 | #ifndef _UAPI_LINUX_BTRFS_H |
20 | #define _UAPI_LINUX_BTRFS_H | |
21 | #include <linux/types.h> | |
c5739bba CM |
22 | #include <linux/ioctl.h> |
23 | ||
24 | #define BTRFS_IOCTL_MAGIC 0x94 | |
25 | #define BTRFS_VOL_NAME_MAX 255 | |
d4ae133b | 26 | #define BTRFS_LABEL_SIZE 256 |
8a4b83cc | 27 | |
c071fcfd | 28 | /* this should be 4k */ |
72fd032e | 29 | #define BTRFS_PATH_NAME_MAX 4087 |
c5739bba | 30 | struct btrfs_ioctl_vol_args { |
3de4586c | 31 | __s64 fd; |
8a4b83cc | 32 | char name[BTRFS_PATH_NAME_MAX + 1]; |
c5739bba CM |
33 | }; |
34 | ||
3f6bcfbd SB |
35 | #define BTRFS_DEVICE_PATH_NAME_MAX 1024 |
36 | ||
475f6387 JS |
37 | #define BTRFS_FSID_SIZE 16 |
38 | #define BTRFS_UUID_SIZE 16 | |
b2373f25 | 39 | #define BTRFS_UUID_UNPARSED_SIZE 37 |
fdfb1e4f | 40 | |
83288b60 JM |
41 | /* |
42 | * flags definition for qgroup limits | |
43 | * | |
44 | * Used by: | |
45 | * struct btrfs_qgroup_limit.flags | |
46 | * struct btrfs_qgroup_limit_item.flags | |
47 | */ | |
48 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
49 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
50 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
51 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
52 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
53 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
bed92eae AJ |
54 | |
55 | struct btrfs_qgroup_limit { | |
56 | __u64 flags; | |
57 | __u64 max_rfer; | |
58 | __u64 max_excl; | |
59 | __u64 rsv_rfer; | |
60 | __u64 rsv_excl; | |
61 | }; | |
62 | ||
83288b60 JM |
63 | /* |
64 | * flags definition for qgroup inheritance | |
65 | * | |
66 | * Used by: | |
67 | * struct btrfs_qgroup_inherit.flags | |
68 | */ | |
69 | #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) | |
70 | ||
bed92eae AJ |
71 | struct btrfs_qgroup_inherit { |
72 | __u64 flags; | |
73 | __u64 num_qgroups; | |
74 | __u64 num_ref_copies; | |
75 | __u64 num_excl_copies; | |
76 | struct btrfs_qgroup_limit lim; | |
77 | __u64 qgroups[0]; | |
78 | }; | |
79 | ||
80 | struct btrfs_ioctl_qgroup_limit_args { | |
81 | __u64 qgroupid; | |
82 | struct btrfs_qgroup_limit lim; | |
83 | }; | |
84 | ||
884f6eca JM |
85 | /* |
86 | * flags for subvolumes | |
87 | * | |
88 | * Used by: | |
89 | * struct btrfs_ioctl_vol_args_v2.flags | |
90 | * | |
91 | * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: | |
92 | * - BTRFS_IOC_SUBVOL_GETFLAGS | |
93 | * - BTRFS_IOC_SUBVOL_SETFLAGS | |
94 | */ | |
95 | #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) | |
96 | #define BTRFS_SUBVOL_RDONLY (1ULL << 1) | |
97 | #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) | |
98 | ||
fdfb1e4f LZ |
99 | #define BTRFS_SUBVOL_NAME_MAX 4039 |
100 | struct btrfs_ioctl_vol_args_v2 { | |
72fd032e SW |
101 | __s64 fd; |
102 | __u64 transid; | |
fdfb1e4f | 103 | __u64 flags; |
6f72c7e2 AJ |
104 | union { |
105 | struct { | |
106 | __u64 size; | |
107 | struct btrfs_qgroup_inherit __user *qgroup_inherit; | |
108 | }; | |
109 | __u64 unused[4]; | |
110 | }; | |
fdfb1e4f | 111 | char name[BTRFS_SUBVOL_NAME_MAX + 1]; |
72fd032e SW |
112 | }; |
113 | ||
a2de733c AJ |
114 | /* |
115 | * structure to report errors and progress to userspace, either as a | |
116 | * result of a finished scrub, a canceled scrub or a progress inquiry | |
117 | */ | |
118 | struct btrfs_scrub_progress { | |
119 | __u64 data_extents_scrubbed; /* # of data extents scrubbed */ | |
120 | __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ | |
121 | __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ | |
122 | __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ | |
123 | __u64 read_errors; /* # of read errors encountered (EIO) */ | |
124 | __u64 csum_errors; /* # of failed csum checks */ | |
125 | __u64 verify_errors; /* # of occurences, where the metadata | |
126 | * of a tree block did not match the | |
127 | * expected values, like generation or | |
128 | * logical */ | |
129 | __u64 no_csum; /* # of 4k data block for which no csum | |
130 | * is present, probably the result of | |
131 | * data written with nodatasum */ | |
132 | __u64 csum_discards; /* # of csum for which no data was found | |
133 | * in the extent tree. */ | |
134 | __u64 super_errors; /* # of bad super blocks encountered */ | |
135 | __u64 malloc_errors; /* # of internal kmalloc errors. These | |
136 | * will likely cause an incomplete | |
137 | * scrub */ | |
138 | __u64 uncorrectable_errors; /* # of errors where either no intact | |
139 | * copy was found or the writeback | |
140 | * failed */ | |
141 | __u64 corrected_errors; /* # of errors corrected */ | |
142 | __u64 last_physical; /* last physical address scrubbed. In | |
143 | * case a scrub was aborted, this can | |
144 | * be used to restart the scrub */ | |
145 | __u64 unverified_errors; /* # of occurences where a read for a | |
146 | * full (64k) bio failed, but the re- | |
147 | * check succeeded for each 4k piece. | |
148 | * Intermittent error. */ | |
149 | }; | |
150 | ||
8628764e | 151 | #define BTRFS_SCRUB_READONLY 1 |
475f6387 JS |
152 | struct btrfs_ioctl_scrub_args { |
153 | __u64 devid; /* in */ | |
154 | __u64 start; /* in */ | |
155 | __u64 end; /* in */ | |
156 | __u64 flags; /* in */ | |
157 | struct btrfs_scrub_progress progress; /* out */ | |
158 | /* pad to 1k */ | |
159 | __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; | |
160 | }; | |
161 | ||
e93c89c1 SB |
162 | #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
163 | #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 | |
164 | struct btrfs_ioctl_dev_replace_start_params { | |
165 | __u64 srcdevid; /* in, if 0, use srcdev_name instead */ | |
e93c89c1 SB |
166 | __u64 cont_reading_from_srcdev_mode; /* in, see #define |
167 | * above */ | |
3f6bcfbd SB |
168 | __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ |
169 | __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ | |
e93c89c1 SB |
170 | }; |
171 | ||
172 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 | |
173 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 | |
174 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 | |
175 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 | |
176 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 | |
177 | struct btrfs_ioctl_dev_replace_status_params { | |
178 | __u64 replace_state; /* out, see #define above */ | |
179 | __u64 progress_1000; /* out, 0 <= x <= 1000 */ | |
180 | __u64 time_started; /* out, seconds since 1-Jan-1970 */ | |
181 | __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ | |
182 | __u64 num_write_errors; /* out */ | |
183 | __u64 num_uncorrectable_read_errors; /* out */ | |
184 | }; | |
185 | ||
186 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 | |
187 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 | |
188 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 | |
189 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 | |
190 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 | |
191 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 | |
2fc9f6ba | 192 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 |
e93c89c1 SB |
193 | struct btrfs_ioctl_dev_replace_args { |
194 | __u64 cmd; /* in */ | |
195 | __u64 result; /* out */ | |
196 | ||
197 | union { | |
198 | struct btrfs_ioctl_dev_replace_start_params start; | |
199 | struct btrfs_ioctl_dev_replace_status_params status; | |
200 | }; /* in/out */ | |
201 | ||
202 | __u64 spare[64]; | |
203 | }; | |
204 | ||
475f6387 JS |
205 | struct btrfs_ioctl_dev_info_args { |
206 | __u64 devid; /* in/out */ | |
207 | __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ | |
208 | __u64 bytes_used; /* out */ | |
209 | __u64 total_bytes; /* out */ | |
210 | __u64 unused[379]; /* pad to 4k */ | |
211 | __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ | |
212 | }; | |
213 | ||
214 | struct btrfs_ioctl_fs_info_args { | |
215 | __u64 max_id; /* out */ | |
216 | __u64 num_devices; /* out */ | |
217 | __u8 fsid[BTRFS_FSID_SIZE]; /* out */ | |
80a773fb DS |
218 | __u32 nodesize; /* out */ |
219 | __u32 sectorsize; /* out */ | |
220 | __u32 clone_alignment; /* out */ | |
221 | __u32 reserved32; | |
222 | __u64 reserved[122]; /* pad to 1k */ | |
475f6387 JS |
223 | }; |
224 | ||
18db9ac6 JM |
225 | /* |
226 | * feature flags | |
227 | * | |
228 | * Used by: | |
229 | * struct btrfs_ioctl_feature_flags | |
230 | */ | |
231 | #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) | |
232 | ||
233 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) | |
234 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) | |
235 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) | |
236 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) | |
237 | /* | |
238 | * some patches floated around with a second compression method | |
239 | * lets save that incompat here for when they do get in | |
240 | * Note we don't actually support it, we're just reserving the | |
241 | * number | |
242 | */ | |
243 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
244 | ||
245 | /* | |
246 | * older kernels tried to do bigger metadata blocks, but the | |
247 | * code was pretty buggy. Lets not let them try anymore. | |
248 | */ | |
249 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
250 | ||
251 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) | |
252 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) | |
253 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) | |
254 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) | |
255 | ||
2eaa055f JM |
256 | struct btrfs_ioctl_feature_flags { |
257 | __u64 compat_flags; | |
258 | __u64 compat_ro_flags; | |
259 | __u64 incompat_flags; | |
260 | }; | |
261 | ||
837d5b6e ID |
262 | /* balance control ioctl modes */ |
263 | #define BTRFS_BALANCE_CTL_PAUSE 1 | |
a7e99c69 | 264 | #define BTRFS_BALANCE_CTL_CANCEL 2 |
837d5b6e | 265 | |
c9e9f97b ID |
266 | /* |
267 | * this is packed, because it should be exactly the same as its disk | |
268 | * byte order counterpart (struct btrfs_disk_balance_args) | |
269 | */ | |
270 | struct btrfs_balance_args { | |
271 | __u64 profiles; | |
bc309467 DS |
272 | union { |
273 | __le64 usage; | |
274 | struct { | |
275 | __le32 usage_min; | |
276 | __le32 usage_max; | |
277 | }; | |
278 | }; | |
c9e9f97b ID |
279 | __u64 devid; |
280 | __u64 pstart; | |
281 | __u64 pend; | |
282 | __u64 vstart; | |
283 | __u64 vend; | |
284 | ||
285 | __u64 target; | |
286 | ||
287 | __u64 flags; | |
288 | ||
12907fc7 DS |
289 | /* |
290 | * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' | |
291 | * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum | |
292 | * and maximum | |
293 | */ | |
294 | union { | |
295 | __u64 limit; /* limit number of processed chunks */ | |
296 | struct { | |
297 | __u32 limit_min; | |
298 | __u32 limit_max; | |
299 | }; | |
300 | }; | |
dee32d0a GAP |
301 | |
302 | /* | |
303 | * Process chunks that cross stripes_min..stripes_max devices, | |
304 | * BTRFS_BALANCE_ARGS_STRIPES_RANGE | |
305 | */ | |
306 | __le32 stripes_min; | |
307 | __le32 stripes_max; | |
308 | ||
309 | __u64 unused[6]; | |
c9e9f97b ID |
310 | } __attribute__ ((__packed__)); |
311 | ||
312 | /* report balance progress to userspace */ | |
313 | struct btrfs_balance_progress { | |
314 | __u64 expected; /* estimated # of chunks that will be | |
315 | * relocated to fulfill the request */ | |
316 | __u64 considered; /* # of chunks we have considered so far */ | |
317 | __u64 completed; /* # of chunks relocated so far */ | |
318 | }; | |
319 | ||
04cd01df JM |
320 | /* |
321 | * flags definition for balance | |
322 | * | |
323 | * Restriper's general type filter | |
324 | * | |
325 | * Used by: | |
326 | * btrfs_ioctl_balance_args.flags | |
327 | * btrfs_balance_control.flags (internal) | |
328 | */ | |
329 | #define BTRFS_BALANCE_DATA (1ULL << 0) | |
330 | #define BTRFS_BALANCE_SYSTEM (1ULL << 1) | |
331 | #define BTRFS_BALANCE_METADATA (1ULL << 2) | |
332 | ||
333 | #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ | |
334 | BTRFS_BALANCE_SYSTEM | \ | |
335 | BTRFS_BALANCE_METADATA) | |
336 | ||
337 | #define BTRFS_BALANCE_FORCE (1ULL << 3) | |
338 | #define BTRFS_BALANCE_RESUME (1ULL << 4) | |
339 | ||
340 | /* | |
341 | * flags definitions for per-type balance args | |
342 | * | |
343 | * Balance filters | |
344 | * | |
345 | * Used by: | |
346 | * struct btrfs_balance_args | |
347 | */ | |
348 | #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) | |
349 | #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) | |
350 | #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) | |
351 | #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) | |
352 | #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) | |
353 | #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) | |
354 | #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) | |
355 | #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) | |
356 | #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) | |
357 | ||
358 | #define BTRFS_BALANCE_ARGS_MASK \ | |
359 | (BTRFS_BALANCE_ARGS_PROFILES | \ | |
360 | BTRFS_BALANCE_ARGS_USAGE | \ | |
361 | BTRFS_BALANCE_ARGS_DEVID | \ | |
362 | BTRFS_BALANCE_ARGS_DRANGE | \ | |
363 | BTRFS_BALANCE_ARGS_VRANGE | \ | |
364 | BTRFS_BALANCE_ARGS_LIMIT | \ | |
365 | BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ | |
366 | BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ | |
367 | BTRFS_BALANCE_ARGS_USAGE_RANGE) | |
368 | ||
369 | /* | |
370 | * Profile changing flags. When SOFT is set we won't relocate chunk if | |
371 | * it already has the target profile (even though it may be | |
372 | * half-filled). | |
373 | */ | |
374 | #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) | |
375 | #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) | |
376 | ||
377 | ||
378 | /* | |
379 | * flags definition for balance state | |
380 | * | |
381 | * Used by: | |
382 | * struct btrfs_ioctl_balance_args.state | |
383 | */ | |
837d5b6e ID |
384 | #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) |
385 | #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) | |
a7e99c69 | 386 | #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) |
837d5b6e | 387 | |
c9e9f97b ID |
388 | struct btrfs_ioctl_balance_args { |
389 | __u64 flags; /* in/out */ | |
390 | __u64 state; /* out */ | |
391 | ||
392 | struct btrfs_balance_args data; /* in/out */ | |
393 | struct btrfs_balance_args meta; /* in/out */ | |
394 | struct btrfs_balance_args sys; /* in/out */ | |
395 | ||
396 | struct btrfs_balance_progress stat; /* out */ | |
397 | ||
398 | __u64 unused[72]; /* pad to 1k */ | |
399 | }; | |
400 | ||
ac8e9819 CM |
401 | #define BTRFS_INO_LOOKUP_PATH_MAX 4080 |
402 | struct btrfs_ioctl_ino_lookup_args { | |
403 | __u64 treeid; | |
404 | __u64 objectid; | |
405 | char name[BTRFS_INO_LOOKUP_PATH_MAX]; | |
406 | }; | |
407 | ||
408 | struct btrfs_ioctl_search_key { | |
409 | /* which root are we searching. 0 is the tree of tree roots */ | |
410 | __u64 tree_id; | |
411 | ||
412 | /* keys returned will be >= min and <= max */ | |
413 | __u64 min_objectid; | |
414 | __u64 max_objectid; | |
415 | ||
416 | /* keys returned will be >= min and <= max */ | |
417 | __u64 min_offset; | |
418 | __u64 max_offset; | |
419 | ||
420 | /* max and min transids to search for */ | |
421 | __u64 min_transid; | |
422 | __u64 max_transid; | |
423 | ||
424 | /* keys returned will be >= min and <= max */ | |
425 | __u32 min_type; | |
426 | __u32 max_type; | |
427 | ||
428 | /* | |
429 | * how many items did userland ask for, and how many are we | |
430 | * returning | |
431 | */ | |
432 | __u32 nr_items; | |
433 | ||
434 | /* align to 64 bits */ | |
435 | __u32 unused; | |
436 | ||
437 | /* some extra for later */ | |
438 | __u64 unused1; | |
439 | __u64 unused2; | |
440 | __u64 unused3; | |
441 | __u64 unused4; | |
442 | }; | |
443 | ||
444 | struct btrfs_ioctl_search_header { | |
445 | __u64 transid; | |
446 | __u64 objectid; | |
447 | __u64 offset; | |
448 | __u32 type; | |
449 | __u32 len; | |
450 | }; | |
451 | ||
452 | #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) | |
453 | /* | |
454 | * the buf is an array of search headers where | |
455 | * each header is followed by the actual item | |
456 | * the type field is expanded to 32 bits for alignment | |
457 | */ | |
458 | struct btrfs_ioctl_search_args { | |
459 | struct btrfs_ioctl_search_key key; | |
460 | char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; | |
461 | }; | |
462 | ||
cc68a8a5 GH |
463 | struct btrfs_ioctl_search_args_v2 { |
464 | struct btrfs_ioctl_search_key key; /* in/out - search parameters */ | |
465 | __u64 buf_size; /* in - size of buffer | |
466 | * out - on EOVERFLOW: needed size | |
467 | * to store item */ | |
468 | __u64 buf[0]; /* out - found items */ | |
469 | }; | |
470 | ||
c071fcfd CM |
471 | struct btrfs_ioctl_clone_range_args { |
472 | __s64 src_fd; | |
473 | __u64 src_offset, src_length; | |
474 | __u64 dest_offset; | |
475 | }; | |
476 | ||
1e701a32 CM |
477 | /* flags for the defrag range ioctl */ |
478 | #define BTRFS_DEFRAG_RANGE_COMPRESS 1 | |
479 | #define BTRFS_DEFRAG_RANGE_START_IO 2 | |
480 | ||
416161db MF |
481 | #define BTRFS_SAME_DATA_DIFFERS 1 |
482 | /* For extent-same ioctl */ | |
483 | struct btrfs_ioctl_same_extent_info { | |
484 | __s64 fd; /* in - destination file */ | |
485 | __u64 logical_offset; /* in - start of extent in destination */ | |
486 | __u64 bytes_deduped; /* out - total # of bytes we were able | |
487 | * to dedupe from this file */ | |
488 | /* status of this dedupe operation: | |
489 | * 0 if dedup succeeds | |
490 | * < 0 for error | |
491 | * == BTRFS_SAME_DATA_DIFFERS if data differs | |
492 | */ | |
493 | __s32 status; /* out - see above description */ | |
494 | __u32 reserved; | |
495 | }; | |
496 | ||
497 | struct btrfs_ioctl_same_args { | |
498 | __u64 logical_offset; /* in - start of extent in source */ | |
499 | __u64 length; /* in - length of extent */ | |
500 | __u16 dest_count; /* in - total elements in info array */ | |
501 | __u16 reserved1; | |
502 | __u32 reserved2; | |
503 | struct btrfs_ioctl_same_extent_info info[0]; | |
504 | }; | |
505 | ||
1406e432 | 506 | struct btrfs_ioctl_space_info { |
ce769a29 SW |
507 | __u64 flags; |
508 | __u64 total_bytes; | |
509 | __u64 used_bytes; | |
1406e432 JB |
510 | }; |
511 | ||
512 | struct btrfs_ioctl_space_args { | |
ce769a29 SW |
513 | __u64 space_slots; |
514 | __u64 total_spaces; | |
1406e432 JB |
515 | struct btrfs_ioctl_space_info spaces[0]; |
516 | }; | |
1e701a32 | 517 | |
a542ad1b JS |
518 | struct btrfs_data_container { |
519 | __u32 bytes_left; /* out -- bytes not needed to deliver output */ | |
520 | __u32 bytes_missing; /* out -- additional bytes needed for result */ | |
521 | __u32 elem_cnt; /* out */ | |
522 | __u32 elem_missed; /* out */ | |
740c3d22 | 523 | __u64 val[0]; /* out */ |
a542ad1b JS |
524 | }; |
525 | ||
d7728c96 JS |
526 | struct btrfs_ioctl_ino_path_args { |
527 | __u64 inum; /* in */ | |
d04b1deb | 528 | __u64 size; /* in */ |
d7728c96 | 529 | __u64 reserved[4]; |
740c3d22 CM |
530 | /* struct btrfs_data_container *fspath; out */ |
531 | __u64 fspath; /* out */ | |
d7728c96 JS |
532 | }; |
533 | ||
534 | struct btrfs_ioctl_logical_ino_args { | |
535 | __u64 logical; /* in */ | |
d04b1deb | 536 | __u64 size; /* in */ |
d7728c96 | 537 | __u64 reserved[4]; |
740c3d22 CM |
538 | /* struct btrfs_data_container *inodes; out */ |
539 | __u64 inodes; | |
d7728c96 JS |
540 | }; |
541 | ||
442a4f63 SB |
542 | enum btrfs_dev_stat_values { |
543 | /* disk I/O failure stats */ | |
544 | BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ | |
545 | BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ | |
546 | BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ | |
547 | ||
548 | /* stats for indirect indications for I/O failures */ | |
549 | BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or | |
550 | * contents is illegal: this is an | |
551 | * indication that the block was damaged | |
552 | * during read or write, or written to | |
553 | * wrong location or read from wrong | |
554 | * location */ | |
555 | BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not | |
556 | * been written */ | |
557 | ||
558 | BTRFS_DEV_STAT_VALUES_MAX | |
559 | }; | |
560 | ||
b27f7c0c DS |
561 | /* Reset statistics after reading; needs SYS_ADMIN capability */ |
562 | #define BTRFS_DEV_STATS_RESET (1ULL << 0) | |
563 | ||
c11d2c23 SB |
564 | struct btrfs_ioctl_get_dev_stats { |
565 | __u64 devid; /* in */ | |
566 | __u64 nr_items; /* in/out */ | |
b27f7c0c | 567 | __u64 flags; /* in/out */ |
c11d2c23 SB |
568 | |
569 | /* out values: */ | |
570 | __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
571 | ||
572 | __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */ | |
573 | }; | |
574 | ||
5d13a37b AJ |
575 | #define BTRFS_QUOTA_CTL_ENABLE 1 |
576 | #define BTRFS_QUOTA_CTL_DISABLE 2 | |
2f232036 | 577 | #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 |
5d13a37b AJ |
578 | struct btrfs_ioctl_quota_ctl_args { |
579 | __u64 cmd; | |
580 | __u64 status; | |
581 | }; | |
582 | ||
2f232036 JS |
583 | struct btrfs_ioctl_quota_rescan_args { |
584 | __u64 flags; | |
585 | __u64 progress; | |
586 | __u64 reserved[6]; | |
587 | }; | |
588 | ||
5d13a37b AJ |
589 | struct btrfs_ioctl_qgroup_assign_args { |
590 | __u64 assign; | |
591 | __u64 src; | |
592 | __u64 dst; | |
593 | }; | |
594 | ||
595 | struct btrfs_ioctl_qgroup_create_args { | |
596 | __u64 create; | |
597 | __u64 qgroupid; | |
598 | }; | |
8ea05e3a AB |
599 | struct btrfs_ioctl_timespec { |
600 | __u64 sec; | |
601 | __u32 nsec; | |
602 | }; | |
603 | ||
604 | struct btrfs_ioctl_received_subvol_args { | |
605 | char uuid[BTRFS_UUID_SIZE]; /* in */ | |
606 | __u64 stransid; /* in */ | |
607 | __u64 rtransid; /* out */ | |
608 | struct btrfs_ioctl_timespec stime; /* in */ | |
609 | struct btrfs_ioctl_timespec rtime; /* out */ | |
610 | __u64 flags; /* in */ | |
611 | __u64 reserved[16]; /* in */ | |
612 | }; | |
613 | ||
cb95e7bf MF |
614 | /* |
615 | * Caller doesn't want file data in the send stream, even if the | |
616 | * search of clone sources doesn't find an extent. UPDATE_EXTENT | |
617 | * commands will be sent instead of WRITE commands. | |
618 | */ | |
c2c71324 SB |
619 | #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 |
620 | ||
621 | /* | |
622 | * Do not add the leading stream header. Used when multiple snapshots | |
623 | * are sent back to back. | |
624 | */ | |
625 | #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 | |
626 | ||
627 | /* | |
628 | * Omit the command at the end of the stream that indicated the end | |
629 | * of the stream. This option is used when multiple snapshots are | |
630 | * sent back to back. | |
631 | */ | |
632 | #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 | |
633 | ||
634 | #define BTRFS_SEND_FLAG_MASK \ | |
635 | (BTRFS_SEND_FLAG_NO_FILE_DATA | \ | |
636 | BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ | |
637 | BTRFS_SEND_FLAG_OMIT_END_CMD) | |
cb95e7bf | 638 | |
31db9f7c AB |
639 | struct btrfs_ioctl_send_args { |
640 | __s64 send_fd; /* in */ | |
641 | __u64 clone_sources_count; /* in */ | |
642 | __u64 __user *clone_sources; /* in */ | |
643 | __u64 parent_root; /* in */ | |
644 | __u64 flags; /* in */ | |
645 | __u64 reserved[4]; /* in */ | |
646 | }; | |
5d13a37b | 647 | |
183860f6 AJ |
648 | /* Error codes as returned by the kernel */ |
649 | enum btrfs_err_code { | |
eb710b15 | 650 | BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, |
183860f6 AJ |
651 | BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, |
652 | BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, | |
653 | BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, | |
654 | BTRFS_ERROR_DEV_TGT_REPLACE, | |
655 | BTRFS_ERROR_DEV_MISSING_NOT_FOUND, | |
656 | BTRFS_ERROR_DEV_ONLY_WRITABLE, | |
657 | BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS | |
658 | }; | |
659 | /* An error code to error string mapping for the kernel | |
660 | * error codes | |
661 | */ | |
662 | static inline char *btrfs_err_str(enum btrfs_err_code err_code) | |
663 | { | |
664 | switch (err_code) { | |
665 | case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET: | |
666 | return "unable to go below two devices on raid1"; | |
667 | case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET: | |
668 | return "unable to go below four devices on raid10"; | |
669 | case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET: | |
670 | return "unable to go below two devices on raid5"; | |
671 | case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET: | |
672 | return "unable to go below three devices on raid6"; | |
673 | case BTRFS_ERROR_DEV_TGT_REPLACE: | |
674 | return "unable to remove the dev_replace target dev"; | |
675 | case BTRFS_ERROR_DEV_MISSING_NOT_FOUND: | |
676 | return "no missing devices found to remove"; | |
677 | case BTRFS_ERROR_DEV_ONLY_WRITABLE: | |
678 | return "unable to remove the only writeable device"; | |
679 | case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS: | |
680 | return "add/delete/balance/replace/resize operation "\ | |
681 | "in progress"; | |
682 | default: | |
683 | return NULL; | |
684 | } | |
685 | } | |
686 | ||
c5739bba CM |
687 | #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ |
688 | struct btrfs_ioctl_vol_args) | |
6702ed49 | 689 | #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ |
8352d8a4 | 690 | struct btrfs_ioctl_vol_args) |
edbd8d4e CM |
691 | #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ |
692 | struct btrfs_ioctl_vol_args) | |
8a4b83cc CM |
693 | #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ |
694 | struct btrfs_ioctl_vol_args) | |
6bf13c0c SW |
695 | /* trans start and trans end are dangerous, and only for |
696 | * use by applications that know how to avoid the | |
697 | * resulting deadlocks | |
698 | */ | |
699 | #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) | |
700 | #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) | |
701 | #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) | |
702 | ||
f2eb0a24 | 703 | #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) |
788f20eb CM |
704 | #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ |
705 | struct btrfs_ioctl_vol_args) | |
706 | #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ | |
707 | struct btrfs_ioctl_vol_args) | |
708 | #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ | |
709 | struct btrfs_ioctl_vol_args) | |
c5c9cd4d SW |
710 | |
711 | #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ | |
712 | struct btrfs_ioctl_clone_range_args) | |
713 | ||
3de4586c CM |
714 | #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ |
715 | struct btrfs_ioctl_vol_args) | |
76dda93c YZ |
716 | #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ |
717 | struct btrfs_ioctl_vol_args) | |
1e701a32 CM |
718 | #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ |
719 | struct btrfs_ioctl_defrag_range_args) | |
ac8e9819 CM |
720 | #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ |
721 | struct btrfs_ioctl_search_args) | |
cc68a8a5 GH |
722 | #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ |
723 | struct btrfs_ioctl_search_args_v2) | |
ac8e9819 CM |
724 | #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ |
725 | struct btrfs_ioctl_ino_lookup_args) | |
68b823ef | 726 | #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) |
1406e432 JB |
727 | #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ |
728 | struct btrfs_ioctl_space_args) | |
46204592 SW |
729 | #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) |
730 | #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) | |
fdfb1e4f LZ |
731 | #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ |
732 | struct btrfs_ioctl_vol_args_v2) | |
6f72c7e2 AJ |
733 | #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ |
734 | struct btrfs_ioctl_vol_args_v2) | |
d3a94048 | 735 | #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) |
0caa102d | 736 | #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) |
475f6387 JS |
737 | #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ |
738 | struct btrfs_ioctl_scrub_args) | |
739 | #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) | |
740 | #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ | |
741 | struct btrfs_ioctl_scrub_args) | |
742 | #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ | |
743 | struct btrfs_ioctl_dev_info_args) | |
744 | #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ | |
745 | struct btrfs_ioctl_fs_info_args) | |
c9e9f97b ID |
746 | #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ |
747 | struct btrfs_ioctl_balance_args) | |
837d5b6e | 748 | #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) |
19a39dce ID |
749 | #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ |
750 | struct btrfs_ioctl_balance_args) | |
d7728c96 JS |
751 | #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ |
752 | struct btrfs_ioctl_ino_path_args) | |
753 | #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ | |
754 | struct btrfs_ioctl_ino_path_args) | |
8ea05e3a AB |
755 | #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ |
756 | struct btrfs_ioctl_received_subvol_args) | |
31db9f7c | 757 | #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) |
02db0844 JB |
758 | #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ |
759 | struct btrfs_ioctl_vol_args) | |
5d13a37b AJ |
760 | #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ |
761 | struct btrfs_ioctl_quota_ctl_args) | |
762 | #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ | |
763 | struct btrfs_ioctl_qgroup_assign_args) | |
764 | #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ | |
765 | struct btrfs_ioctl_qgroup_create_args) | |
766 | #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ | |
767 | struct btrfs_ioctl_qgroup_limit_args) | |
2f232036 JS |
768 | #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ |
769 | struct btrfs_ioctl_quota_rescan_args) | |
770 | #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ | |
771 | struct btrfs_ioctl_quota_rescan_args) | |
57254b6e | 772 | #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) |
867ab667 | 773 | #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \ |
774 | char[BTRFS_LABEL_SIZE]) | |
a8bfd4ab | 775 | #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \ |
776 | char[BTRFS_LABEL_SIZE]) | |
c11d2c23 SB |
777 | #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ |
778 | struct btrfs_ioctl_get_dev_stats) | |
e93c89c1 SB |
779 | #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ |
780 | struct btrfs_ioctl_dev_replace_args) | |
416161db MF |
781 | #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ |
782 | struct btrfs_ioctl_same_args) | |
2eaa055f JM |
783 | #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ |
784 | struct btrfs_ioctl_feature_flags) | |
785 | #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ | |
786 | struct btrfs_ioctl_feature_flags[2]) | |
787 | #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ | |
788 | struct btrfs_ioctl_feature_flags[3]) | |
416161db | 789 | |
55e301fd | 790 | #endif /* _UAPI_LINUX_BTRFS_H */ |