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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 | ||
735654ea DS |
37 | #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) |
38 | ||
39 | #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ | |
6b526ed7 AJ |
40 | (BTRFS_SUBVOL_CREATE_ASYNC | \ |
41 | BTRFS_SUBVOL_RDONLY | \ | |
42 | BTRFS_SUBVOL_QGROUP_INHERIT | \ | |
735654ea | 43 | BTRFS_DEVICE_SPEC_BY_ID) |
6b526ed7 | 44 | |
475f6387 JS |
45 | #define BTRFS_FSID_SIZE 16 |
46 | #define BTRFS_UUID_SIZE 16 | |
b2373f25 | 47 | #define BTRFS_UUID_UNPARSED_SIZE 37 |
fdfb1e4f | 48 | |
83288b60 JM |
49 | /* |
50 | * flags definition for qgroup limits | |
51 | * | |
52 | * Used by: | |
53 | * struct btrfs_qgroup_limit.flags | |
54 | * struct btrfs_qgroup_limit_item.flags | |
55 | */ | |
56 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
57 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
58 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
59 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
60 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
61 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
bed92eae AJ |
62 | |
63 | struct btrfs_qgroup_limit { | |
64 | __u64 flags; | |
65 | __u64 max_rfer; | |
66 | __u64 max_excl; | |
67 | __u64 rsv_rfer; | |
68 | __u64 rsv_excl; | |
69 | }; | |
70 | ||
83288b60 JM |
71 | /* |
72 | * flags definition for qgroup inheritance | |
73 | * | |
74 | * Used by: | |
75 | * struct btrfs_qgroup_inherit.flags | |
76 | */ | |
77 | #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) | |
78 | ||
bed92eae AJ |
79 | struct btrfs_qgroup_inherit { |
80 | __u64 flags; | |
81 | __u64 num_qgroups; | |
82 | __u64 num_ref_copies; | |
83 | __u64 num_excl_copies; | |
84 | struct btrfs_qgroup_limit lim; | |
85 | __u64 qgroups[0]; | |
86 | }; | |
87 | ||
88 | struct btrfs_ioctl_qgroup_limit_args { | |
89 | __u64 qgroupid; | |
90 | struct btrfs_qgroup_limit lim; | |
91 | }; | |
92 | ||
884f6eca JM |
93 | /* |
94 | * flags for subvolumes | |
95 | * | |
96 | * Used by: | |
97 | * struct btrfs_ioctl_vol_args_v2.flags | |
98 | * | |
99 | * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: | |
100 | * - BTRFS_IOC_SUBVOL_GETFLAGS | |
101 | * - BTRFS_IOC_SUBVOL_SETFLAGS | |
102 | */ | |
103 | #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) | |
104 | #define BTRFS_SUBVOL_RDONLY (1ULL << 1) | |
105 | #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) | |
106 | ||
fdfb1e4f LZ |
107 | #define BTRFS_SUBVOL_NAME_MAX 4039 |
108 | struct btrfs_ioctl_vol_args_v2 { | |
72fd032e SW |
109 | __s64 fd; |
110 | __u64 transid; | |
fdfb1e4f | 111 | __u64 flags; |
6f72c7e2 AJ |
112 | union { |
113 | struct { | |
114 | __u64 size; | |
115 | struct btrfs_qgroup_inherit __user *qgroup_inherit; | |
116 | }; | |
117 | __u64 unused[4]; | |
118 | }; | |
6b526ed7 AJ |
119 | union { |
120 | char name[BTRFS_SUBVOL_NAME_MAX + 1]; | |
1691cf16 | 121 | __u64 devid; |
6b526ed7 | 122 | }; |
72fd032e SW |
123 | }; |
124 | ||
a2de733c AJ |
125 | /* |
126 | * structure to report errors and progress to userspace, either as a | |
127 | * result of a finished scrub, a canceled scrub or a progress inquiry | |
128 | */ | |
129 | struct btrfs_scrub_progress { | |
130 | __u64 data_extents_scrubbed; /* # of data extents scrubbed */ | |
131 | __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ | |
132 | __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ | |
133 | __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ | |
134 | __u64 read_errors; /* # of read errors encountered (EIO) */ | |
135 | __u64 csum_errors; /* # of failed csum checks */ | |
136 | __u64 verify_errors; /* # of occurences, where the metadata | |
137 | * of a tree block did not match the | |
138 | * expected values, like generation or | |
139 | * logical */ | |
140 | __u64 no_csum; /* # of 4k data block for which no csum | |
141 | * is present, probably the result of | |
142 | * data written with nodatasum */ | |
143 | __u64 csum_discards; /* # of csum for which no data was found | |
144 | * in the extent tree. */ | |
145 | __u64 super_errors; /* # of bad super blocks encountered */ | |
146 | __u64 malloc_errors; /* # of internal kmalloc errors. These | |
147 | * will likely cause an incomplete | |
148 | * scrub */ | |
149 | __u64 uncorrectable_errors; /* # of errors where either no intact | |
150 | * copy was found or the writeback | |
151 | * failed */ | |
152 | __u64 corrected_errors; /* # of errors corrected */ | |
153 | __u64 last_physical; /* last physical address scrubbed. In | |
154 | * case a scrub was aborted, this can | |
155 | * be used to restart the scrub */ | |
156 | __u64 unverified_errors; /* # of occurences where a read for a | |
157 | * full (64k) bio failed, but the re- | |
158 | * check succeeded for each 4k piece. | |
159 | * Intermittent error. */ | |
160 | }; | |
161 | ||
8628764e | 162 | #define BTRFS_SCRUB_READONLY 1 |
475f6387 JS |
163 | struct btrfs_ioctl_scrub_args { |
164 | __u64 devid; /* in */ | |
165 | __u64 start; /* in */ | |
166 | __u64 end; /* in */ | |
167 | __u64 flags; /* in */ | |
168 | struct btrfs_scrub_progress progress; /* out */ | |
169 | /* pad to 1k */ | |
170 | __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; | |
171 | }; | |
172 | ||
e93c89c1 SB |
173 | #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
174 | #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 | |
175 | struct btrfs_ioctl_dev_replace_start_params { | |
176 | __u64 srcdevid; /* in, if 0, use srcdev_name instead */ | |
e93c89c1 SB |
177 | __u64 cont_reading_from_srcdev_mode; /* in, see #define |
178 | * above */ | |
3f6bcfbd SB |
179 | __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ |
180 | __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ | |
e93c89c1 SB |
181 | }; |
182 | ||
183 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 | |
184 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 | |
185 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 | |
186 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 | |
187 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 | |
188 | struct btrfs_ioctl_dev_replace_status_params { | |
189 | __u64 replace_state; /* out, see #define above */ | |
190 | __u64 progress_1000; /* out, 0 <= x <= 1000 */ | |
191 | __u64 time_started; /* out, seconds since 1-Jan-1970 */ | |
192 | __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ | |
193 | __u64 num_write_errors; /* out */ | |
194 | __u64 num_uncorrectable_read_errors; /* out */ | |
195 | }; | |
196 | ||
197 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 | |
198 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 | |
199 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 | |
200 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 | |
201 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 | |
202 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 | |
2fc9f6ba | 203 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 |
e93c89c1 SB |
204 | struct btrfs_ioctl_dev_replace_args { |
205 | __u64 cmd; /* in */ | |
206 | __u64 result; /* out */ | |
207 | ||
208 | union { | |
209 | struct btrfs_ioctl_dev_replace_start_params start; | |
210 | struct btrfs_ioctl_dev_replace_status_params status; | |
211 | }; /* in/out */ | |
212 | ||
213 | __u64 spare[64]; | |
214 | }; | |
215 | ||
475f6387 JS |
216 | struct btrfs_ioctl_dev_info_args { |
217 | __u64 devid; /* in/out */ | |
218 | __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ | |
219 | __u64 bytes_used; /* out */ | |
220 | __u64 total_bytes; /* out */ | |
221 | __u64 unused[379]; /* pad to 4k */ | |
222 | __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ | |
223 | }; | |
224 | ||
225 | struct btrfs_ioctl_fs_info_args { | |
226 | __u64 max_id; /* out */ | |
227 | __u64 num_devices; /* out */ | |
228 | __u8 fsid[BTRFS_FSID_SIZE]; /* out */ | |
80a773fb DS |
229 | __u32 nodesize; /* out */ |
230 | __u32 sectorsize; /* out */ | |
231 | __u32 clone_alignment; /* out */ | |
232 | __u32 reserved32; | |
233 | __u64 reserved[122]; /* pad to 1k */ | |
475f6387 JS |
234 | }; |
235 | ||
18db9ac6 JM |
236 | /* |
237 | * feature flags | |
238 | * | |
239 | * Used by: | |
240 | * struct btrfs_ioctl_feature_flags | |
241 | */ | |
242 | #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) | |
243 | ||
244 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) | |
245 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) | |
246 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) | |
247 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) | |
248 | /* | |
249 | * some patches floated around with a second compression method | |
250 | * lets save that incompat here for when they do get in | |
251 | * Note we don't actually support it, we're just reserving the | |
252 | * number | |
253 | */ | |
254 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
255 | ||
256 | /* | |
257 | * older kernels tried to do bigger metadata blocks, but the | |
258 | * code was pretty buggy. Lets not let them try anymore. | |
259 | */ | |
260 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
261 | ||
262 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) | |
263 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) | |
264 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) | |
265 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) | |
266 | ||
2eaa055f JM |
267 | struct btrfs_ioctl_feature_flags { |
268 | __u64 compat_flags; | |
269 | __u64 compat_ro_flags; | |
270 | __u64 incompat_flags; | |
271 | }; | |
272 | ||
837d5b6e ID |
273 | /* balance control ioctl modes */ |
274 | #define BTRFS_BALANCE_CTL_PAUSE 1 | |
a7e99c69 | 275 | #define BTRFS_BALANCE_CTL_CANCEL 2 |
837d5b6e | 276 | |
c9e9f97b ID |
277 | /* |
278 | * this is packed, because it should be exactly the same as its disk | |
279 | * byte order counterpart (struct btrfs_disk_balance_args) | |
280 | */ | |
281 | struct btrfs_balance_args { | |
282 | __u64 profiles; | |
bc309467 DS |
283 | union { |
284 | __le64 usage; | |
285 | struct { | |
286 | __le32 usage_min; | |
287 | __le32 usage_max; | |
288 | }; | |
289 | }; | |
c9e9f97b ID |
290 | __u64 devid; |
291 | __u64 pstart; | |
292 | __u64 pend; | |
293 | __u64 vstart; | |
294 | __u64 vend; | |
295 | ||
296 | __u64 target; | |
297 | ||
298 | __u64 flags; | |
299 | ||
12907fc7 DS |
300 | /* |
301 | * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' | |
302 | * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum | |
303 | * and maximum | |
304 | */ | |
305 | union { | |
306 | __u64 limit; /* limit number of processed chunks */ | |
307 | struct { | |
308 | __u32 limit_min; | |
309 | __u32 limit_max; | |
310 | }; | |
311 | }; | |
dee32d0a GAP |
312 | |
313 | /* | |
314 | * Process chunks that cross stripes_min..stripes_max devices, | |
315 | * BTRFS_BALANCE_ARGS_STRIPES_RANGE | |
316 | */ | |
317 | __le32 stripes_min; | |
318 | __le32 stripes_max; | |
319 | ||
320 | __u64 unused[6]; | |
c9e9f97b ID |
321 | } __attribute__ ((__packed__)); |
322 | ||
323 | /* report balance progress to userspace */ | |
324 | struct btrfs_balance_progress { | |
325 | __u64 expected; /* estimated # of chunks that will be | |
326 | * relocated to fulfill the request */ | |
327 | __u64 considered; /* # of chunks we have considered so far */ | |
328 | __u64 completed; /* # of chunks relocated so far */ | |
329 | }; | |
330 | ||
04cd01df JM |
331 | /* |
332 | * flags definition for balance | |
333 | * | |
334 | * Restriper's general type filter | |
335 | * | |
336 | * Used by: | |
337 | * btrfs_ioctl_balance_args.flags | |
338 | * btrfs_balance_control.flags (internal) | |
339 | */ | |
340 | #define BTRFS_BALANCE_DATA (1ULL << 0) | |
341 | #define BTRFS_BALANCE_SYSTEM (1ULL << 1) | |
342 | #define BTRFS_BALANCE_METADATA (1ULL << 2) | |
343 | ||
344 | #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ | |
345 | BTRFS_BALANCE_SYSTEM | \ | |
346 | BTRFS_BALANCE_METADATA) | |
347 | ||
348 | #define BTRFS_BALANCE_FORCE (1ULL << 3) | |
349 | #define BTRFS_BALANCE_RESUME (1ULL << 4) | |
350 | ||
351 | /* | |
352 | * flags definitions for per-type balance args | |
353 | * | |
354 | * Balance filters | |
355 | * | |
356 | * Used by: | |
357 | * struct btrfs_balance_args | |
358 | */ | |
359 | #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) | |
360 | #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) | |
361 | #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) | |
362 | #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) | |
363 | #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) | |
364 | #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) | |
365 | #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) | |
366 | #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) | |
367 | #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) | |
368 | ||
369 | #define BTRFS_BALANCE_ARGS_MASK \ | |
370 | (BTRFS_BALANCE_ARGS_PROFILES | \ | |
371 | BTRFS_BALANCE_ARGS_USAGE | \ | |
372 | BTRFS_BALANCE_ARGS_DEVID | \ | |
373 | BTRFS_BALANCE_ARGS_DRANGE | \ | |
374 | BTRFS_BALANCE_ARGS_VRANGE | \ | |
375 | BTRFS_BALANCE_ARGS_LIMIT | \ | |
376 | BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ | |
377 | BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ | |
378 | BTRFS_BALANCE_ARGS_USAGE_RANGE) | |
379 | ||
380 | /* | |
381 | * Profile changing flags. When SOFT is set we won't relocate chunk if | |
382 | * it already has the target profile (even though it may be | |
383 | * half-filled). | |
384 | */ | |
385 | #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) | |
386 | #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) | |
387 | ||
388 | ||
389 | /* | |
390 | * flags definition for balance state | |
391 | * | |
392 | * Used by: | |
393 | * struct btrfs_ioctl_balance_args.state | |
394 | */ | |
837d5b6e ID |
395 | #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) |
396 | #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) | |
a7e99c69 | 397 | #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) |
837d5b6e | 398 | |
c9e9f97b ID |
399 | struct btrfs_ioctl_balance_args { |
400 | __u64 flags; /* in/out */ | |
401 | __u64 state; /* out */ | |
402 | ||
403 | struct btrfs_balance_args data; /* in/out */ | |
404 | struct btrfs_balance_args meta; /* in/out */ | |
405 | struct btrfs_balance_args sys; /* in/out */ | |
406 | ||
407 | struct btrfs_balance_progress stat; /* out */ | |
408 | ||
409 | __u64 unused[72]; /* pad to 1k */ | |
410 | }; | |
411 | ||
ac8e9819 CM |
412 | #define BTRFS_INO_LOOKUP_PATH_MAX 4080 |
413 | struct btrfs_ioctl_ino_lookup_args { | |
414 | __u64 treeid; | |
415 | __u64 objectid; | |
416 | char name[BTRFS_INO_LOOKUP_PATH_MAX]; | |
417 | }; | |
418 | ||
419 | struct btrfs_ioctl_search_key { | |
420 | /* which root are we searching. 0 is the tree of tree roots */ | |
421 | __u64 tree_id; | |
422 | ||
423 | /* keys returned will be >= min and <= max */ | |
424 | __u64 min_objectid; | |
425 | __u64 max_objectid; | |
426 | ||
427 | /* keys returned will be >= min and <= max */ | |
428 | __u64 min_offset; | |
429 | __u64 max_offset; | |
430 | ||
431 | /* max and min transids to search for */ | |
432 | __u64 min_transid; | |
433 | __u64 max_transid; | |
434 | ||
435 | /* keys returned will be >= min and <= max */ | |
436 | __u32 min_type; | |
437 | __u32 max_type; | |
438 | ||
439 | /* | |
440 | * how many items did userland ask for, and how many are we | |
441 | * returning | |
442 | */ | |
443 | __u32 nr_items; | |
444 | ||
445 | /* align to 64 bits */ | |
446 | __u32 unused; | |
447 | ||
448 | /* some extra for later */ | |
449 | __u64 unused1; | |
450 | __u64 unused2; | |
451 | __u64 unused3; | |
452 | __u64 unused4; | |
453 | }; | |
454 | ||
455 | struct btrfs_ioctl_search_header { | |
456 | __u64 transid; | |
457 | __u64 objectid; | |
458 | __u64 offset; | |
459 | __u32 type; | |
460 | __u32 len; | |
461 | }; | |
462 | ||
463 | #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) | |
464 | /* | |
465 | * the buf is an array of search headers where | |
466 | * each header is followed by the actual item | |
467 | * the type field is expanded to 32 bits for alignment | |
468 | */ | |
469 | struct btrfs_ioctl_search_args { | |
470 | struct btrfs_ioctl_search_key key; | |
471 | char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; | |
472 | }; | |
473 | ||
cc68a8a5 GH |
474 | struct btrfs_ioctl_search_args_v2 { |
475 | struct btrfs_ioctl_search_key key; /* in/out - search parameters */ | |
476 | __u64 buf_size; /* in - size of buffer | |
477 | * out - on EOVERFLOW: needed size | |
478 | * to store item */ | |
479 | __u64 buf[0]; /* out - found items */ | |
480 | }; | |
481 | ||
c071fcfd CM |
482 | struct btrfs_ioctl_clone_range_args { |
483 | __s64 src_fd; | |
484 | __u64 src_offset, src_length; | |
485 | __u64 dest_offset; | |
486 | }; | |
487 | ||
33ca9133 JM |
488 | /* |
489 | * flags definition for the defrag range ioctl | |
490 | * | |
491 | * Used by: | |
492 | * struct btrfs_ioctl_defrag_range_args.flags | |
493 | */ | |
1e701a32 CM |
494 | #define BTRFS_DEFRAG_RANGE_COMPRESS 1 |
495 | #define BTRFS_DEFRAG_RANGE_START_IO 2 | |
33ca9133 JM |
496 | struct btrfs_ioctl_defrag_range_args { |
497 | /* start of the defrag operation */ | |
498 | __u64 start; | |
499 | ||
500 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
501 | __u64 len; | |
502 | ||
503 | /* | |
504 | * flags for the operation, which can include turning | |
505 | * on compression for this one defrag | |
506 | */ | |
507 | __u64 flags; | |
508 | ||
509 | /* | |
510 | * any extent bigger than this will be considered | |
511 | * already defragged. Use 0 to take the kernel default | |
512 | * Use 1 to say every single extent must be rewritten | |
513 | */ | |
514 | __u32 extent_thresh; | |
515 | ||
516 | /* | |
517 | * which compression method to use if turning on compression | |
518 | * for this defrag operation. If unspecified, zlib will | |
519 | * be used | |
520 | */ | |
521 | __u32 compress_type; | |
522 | ||
523 | /* spare for later */ | |
524 | __u32 unused[4]; | |
525 | }; | |
526 | ||
1e701a32 | 527 | |
416161db MF |
528 | #define BTRFS_SAME_DATA_DIFFERS 1 |
529 | /* For extent-same ioctl */ | |
530 | struct btrfs_ioctl_same_extent_info { | |
531 | __s64 fd; /* in - destination file */ | |
532 | __u64 logical_offset; /* in - start of extent in destination */ | |
533 | __u64 bytes_deduped; /* out - total # of bytes we were able | |
534 | * to dedupe from this file */ | |
535 | /* status of this dedupe operation: | |
536 | * 0 if dedup succeeds | |
537 | * < 0 for error | |
538 | * == BTRFS_SAME_DATA_DIFFERS if data differs | |
539 | */ | |
540 | __s32 status; /* out - see above description */ | |
541 | __u32 reserved; | |
542 | }; | |
543 | ||
544 | struct btrfs_ioctl_same_args { | |
545 | __u64 logical_offset; /* in - start of extent in source */ | |
546 | __u64 length; /* in - length of extent */ | |
547 | __u16 dest_count; /* in - total elements in info array */ | |
548 | __u16 reserved1; | |
549 | __u32 reserved2; | |
550 | struct btrfs_ioctl_same_extent_info info[0]; | |
551 | }; | |
552 | ||
1406e432 | 553 | struct btrfs_ioctl_space_info { |
ce769a29 SW |
554 | __u64 flags; |
555 | __u64 total_bytes; | |
556 | __u64 used_bytes; | |
1406e432 JB |
557 | }; |
558 | ||
559 | struct btrfs_ioctl_space_args { | |
ce769a29 SW |
560 | __u64 space_slots; |
561 | __u64 total_spaces; | |
1406e432 JB |
562 | struct btrfs_ioctl_space_info spaces[0]; |
563 | }; | |
1e701a32 | 564 | |
a542ad1b JS |
565 | struct btrfs_data_container { |
566 | __u32 bytes_left; /* out -- bytes not needed to deliver output */ | |
567 | __u32 bytes_missing; /* out -- additional bytes needed for result */ | |
568 | __u32 elem_cnt; /* out */ | |
569 | __u32 elem_missed; /* out */ | |
740c3d22 | 570 | __u64 val[0]; /* out */ |
a542ad1b JS |
571 | }; |
572 | ||
d7728c96 JS |
573 | struct btrfs_ioctl_ino_path_args { |
574 | __u64 inum; /* in */ | |
d04b1deb | 575 | __u64 size; /* in */ |
d7728c96 | 576 | __u64 reserved[4]; |
740c3d22 CM |
577 | /* struct btrfs_data_container *fspath; out */ |
578 | __u64 fspath; /* out */ | |
d7728c96 JS |
579 | }; |
580 | ||
581 | struct btrfs_ioctl_logical_ino_args { | |
582 | __u64 logical; /* in */ | |
d04b1deb | 583 | __u64 size; /* in */ |
d7728c96 | 584 | __u64 reserved[4]; |
740c3d22 CM |
585 | /* struct btrfs_data_container *inodes; out */ |
586 | __u64 inodes; | |
d7728c96 JS |
587 | }; |
588 | ||
442a4f63 SB |
589 | enum btrfs_dev_stat_values { |
590 | /* disk I/O failure stats */ | |
591 | BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ | |
592 | BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ | |
593 | BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ | |
594 | ||
595 | /* stats for indirect indications for I/O failures */ | |
596 | BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or | |
597 | * contents is illegal: this is an | |
598 | * indication that the block was damaged | |
599 | * during read or write, or written to | |
600 | * wrong location or read from wrong | |
601 | * location */ | |
602 | BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not | |
603 | * been written */ | |
604 | ||
605 | BTRFS_DEV_STAT_VALUES_MAX | |
606 | }; | |
607 | ||
b27f7c0c DS |
608 | /* Reset statistics after reading; needs SYS_ADMIN capability */ |
609 | #define BTRFS_DEV_STATS_RESET (1ULL << 0) | |
610 | ||
c11d2c23 SB |
611 | struct btrfs_ioctl_get_dev_stats { |
612 | __u64 devid; /* in */ | |
613 | __u64 nr_items; /* in/out */ | |
b27f7c0c | 614 | __u64 flags; /* in/out */ |
c11d2c23 SB |
615 | |
616 | /* out values: */ | |
617 | __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
618 | ||
619 | __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */ | |
620 | }; | |
621 | ||
5d13a37b AJ |
622 | #define BTRFS_QUOTA_CTL_ENABLE 1 |
623 | #define BTRFS_QUOTA_CTL_DISABLE 2 | |
2f232036 | 624 | #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 |
5d13a37b AJ |
625 | struct btrfs_ioctl_quota_ctl_args { |
626 | __u64 cmd; | |
627 | __u64 status; | |
628 | }; | |
629 | ||
2f232036 JS |
630 | struct btrfs_ioctl_quota_rescan_args { |
631 | __u64 flags; | |
632 | __u64 progress; | |
633 | __u64 reserved[6]; | |
634 | }; | |
635 | ||
5d13a37b AJ |
636 | struct btrfs_ioctl_qgroup_assign_args { |
637 | __u64 assign; | |
638 | __u64 src; | |
639 | __u64 dst; | |
640 | }; | |
641 | ||
642 | struct btrfs_ioctl_qgroup_create_args { | |
643 | __u64 create; | |
644 | __u64 qgroupid; | |
645 | }; | |
8ea05e3a AB |
646 | struct btrfs_ioctl_timespec { |
647 | __u64 sec; | |
648 | __u32 nsec; | |
649 | }; | |
650 | ||
651 | struct btrfs_ioctl_received_subvol_args { | |
652 | char uuid[BTRFS_UUID_SIZE]; /* in */ | |
653 | __u64 stransid; /* in */ | |
654 | __u64 rtransid; /* out */ | |
655 | struct btrfs_ioctl_timespec stime; /* in */ | |
656 | struct btrfs_ioctl_timespec rtime; /* out */ | |
657 | __u64 flags; /* in */ | |
658 | __u64 reserved[16]; /* in */ | |
659 | }; | |
660 | ||
cb95e7bf MF |
661 | /* |
662 | * Caller doesn't want file data in the send stream, even if the | |
663 | * search of clone sources doesn't find an extent. UPDATE_EXTENT | |
664 | * commands will be sent instead of WRITE commands. | |
665 | */ | |
c2c71324 SB |
666 | #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 |
667 | ||
668 | /* | |
669 | * Do not add the leading stream header. Used when multiple snapshots | |
670 | * are sent back to back. | |
671 | */ | |
672 | #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 | |
673 | ||
674 | /* | |
675 | * Omit the command at the end of the stream that indicated the end | |
676 | * of the stream. This option is used when multiple snapshots are | |
677 | * sent back to back. | |
678 | */ | |
679 | #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 | |
680 | ||
681 | #define BTRFS_SEND_FLAG_MASK \ | |
682 | (BTRFS_SEND_FLAG_NO_FILE_DATA | \ | |
683 | BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ | |
684 | BTRFS_SEND_FLAG_OMIT_END_CMD) | |
cb95e7bf | 685 | |
31db9f7c AB |
686 | struct btrfs_ioctl_send_args { |
687 | __s64 send_fd; /* in */ | |
688 | __u64 clone_sources_count; /* in */ | |
689 | __u64 __user *clone_sources; /* in */ | |
690 | __u64 parent_root; /* in */ | |
691 | __u64 flags; /* in */ | |
692 | __u64 reserved[4]; /* in */ | |
693 | }; | |
5d13a37b | 694 | |
183860f6 AJ |
695 | /* Error codes as returned by the kernel */ |
696 | enum btrfs_err_code { | |
eb710b15 | 697 | BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, |
183860f6 AJ |
698 | BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, |
699 | BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, | |
700 | BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, | |
701 | BTRFS_ERROR_DEV_TGT_REPLACE, | |
702 | BTRFS_ERROR_DEV_MISSING_NOT_FOUND, | |
703 | BTRFS_ERROR_DEV_ONLY_WRITABLE, | |
704 | BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS | |
705 | }; | |
706 | /* An error code to error string mapping for the kernel | |
707 | * error codes | |
708 | */ | |
709 | static inline char *btrfs_err_str(enum btrfs_err_code err_code) | |
710 | { | |
711 | switch (err_code) { | |
712 | case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET: | |
713 | return "unable to go below two devices on raid1"; | |
714 | case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET: | |
715 | return "unable to go below four devices on raid10"; | |
716 | case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET: | |
717 | return "unable to go below two devices on raid5"; | |
718 | case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET: | |
719 | return "unable to go below three devices on raid6"; | |
720 | case BTRFS_ERROR_DEV_TGT_REPLACE: | |
721 | return "unable to remove the dev_replace target dev"; | |
722 | case BTRFS_ERROR_DEV_MISSING_NOT_FOUND: | |
723 | return "no missing devices found to remove"; | |
724 | case BTRFS_ERROR_DEV_ONLY_WRITABLE: | |
725 | return "unable to remove the only writeable device"; | |
726 | case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS: | |
727 | return "add/delete/balance/replace/resize operation "\ | |
728 | "in progress"; | |
729 | default: | |
730 | return NULL; | |
731 | } | |
732 | } | |
733 | ||
c5739bba CM |
734 | #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ |
735 | struct btrfs_ioctl_vol_args) | |
6702ed49 | 736 | #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ |
8352d8a4 | 737 | struct btrfs_ioctl_vol_args) |
edbd8d4e CM |
738 | #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ |
739 | struct btrfs_ioctl_vol_args) | |
8a4b83cc CM |
740 | #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ |
741 | struct btrfs_ioctl_vol_args) | |
6bf13c0c SW |
742 | /* trans start and trans end are dangerous, and only for |
743 | * use by applications that know how to avoid the | |
744 | * resulting deadlocks | |
745 | */ | |
746 | #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) | |
747 | #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) | |
748 | #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) | |
749 | ||
f2eb0a24 | 750 | #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) |
788f20eb CM |
751 | #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ |
752 | struct btrfs_ioctl_vol_args) | |
753 | #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ | |
754 | struct btrfs_ioctl_vol_args) | |
755 | #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ | |
756 | struct btrfs_ioctl_vol_args) | |
c5c9cd4d SW |
757 | |
758 | #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ | |
759 | struct btrfs_ioctl_clone_range_args) | |
760 | ||
3de4586c CM |
761 | #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ |
762 | struct btrfs_ioctl_vol_args) | |
76dda93c YZ |
763 | #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ |
764 | struct btrfs_ioctl_vol_args) | |
1e701a32 CM |
765 | #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ |
766 | struct btrfs_ioctl_defrag_range_args) | |
ac8e9819 CM |
767 | #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ |
768 | struct btrfs_ioctl_search_args) | |
cc68a8a5 GH |
769 | #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ |
770 | struct btrfs_ioctl_search_args_v2) | |
ac8e9819 CM |
771 | #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ |
772 | struct btrfs_ioctl_ino_lookup_args) | |
68b823ef | 773 | #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) |
1406e432 JB |
774 | #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ |
775 | struct btrfs_ioctl_space_args) | |
46204592 SW |
776 | #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) |
777 | #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) | |
fdfb1e4f LZ |
778 | #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ |
779 | struct btrfs_ioctl_vol_args_v2) | |
6f72c7e2 AJ |
780 | #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ |
781 | struct btrfs_ioctl_vol_args_v2) | |
d3a94048 | 782 | #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) |
0caa102d | 783 | #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) |
475f6387 JS |
784 | #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ |
785 | struct btrfs_ioctl_scrub_args) | |
786 | #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) | |
787 | #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ | |
788 | struct btrfs_ioctl_scrub_args) | |
789 | #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ | |
790 | struct btrfs_ioctl_dev_info_args) | |
791 | #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ | |
792 | struct btrfs_ioctl_fs_info_args) | |
c9e9f97b ID |
793 | #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ |
794 | struct btrfs_ioctl_balance_args) | |
837d5b6e | 795 | #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) |
19a39dce ID |
796 | #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ |
797 | struct btrfs_ioctl_balance_args) | |
d7728c96 JS |
798 | #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ |
799 | struct btrfs_ioctl_ino_path_args) | |
800 | #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ | |
801 | struct btrfs_ioctl_ino_path_args) | |
8ea05e3a AB |
802 | #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ |
803 | struct btrfs_ioctl_received_subvol_args) | |
31db9f7c | 804 | #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) |
02db0844 JB |
805 | #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ |
806 | struct btrfs_ioctl_vol_args) | |
5d13a37b AJ |
807 | #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ |
808 | struct btrfs_ioctl_quota_ctl_args) | |
809 | #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ | |
810 | struct btrfs_ioctl_qgroup_assign_args) | |
811 | #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ | |
812 | struct btrfs_ioctl_qgroup_create_args) | |
813 | #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ | |
814 | struct btrfs_ioctl_qgroup_limit_args) | |
2f232036 JS |
815 | #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ |
816 | struct btrfs_ioctl_quota_rescan_args) | |
817 | #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ | |
818 | struct btrfs_ioctl_quota_rescan_args) | |
57254b6e | 819 | #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) |
867ab667 | 820 | #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \ |
821 | char[BTRFS_LABEL_SIZE]) | |
a8bfd4ab | 822 | #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \ |
823 | char[BTRFS_LABEL_SIZE]) | |
c11d2c23 SB |
824 | #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ |
825 | struct btrfs_ioctl_get_dev_stats) | |
e93c89c1 SB |
826 | #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ |
827 | struct btrfs_ioctl_dev_replace_args) | |
416161db MF |
828 | #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ |
829 | struct btrfs_ioctl_same_args) | |
2eaa055f JM |
830 | #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ |
831 | struct btrfs_ioctl_feature_flags) | |
832 | #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ | |
833 | struct btrfs_ioctl_feature_flags[2]) | |
834 | #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ | |
835 | struct btrfs_ioctl_feature_flags[3]) | |
6b526ed7 AJ |
836 | #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ |
837 | struct btrfs_ioctl_vol_args_v2) | |
416161db | 838 | |
55e301fd | 839 | #endif /* _UAPI_LINUX_BTRFS_H */ |