1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | /* |
3 | * Copyright (C) 2007 Oracle. All rights reserved. |
4 | * |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public |
7 | * License v2 as published by the Free Software Foundation. |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public |
15 | * License along with this program; if not, write to the |
16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
17 | * Boston, MA 021110-1307, USA. |
18 | */ |
19 | |
20 | #ifndef _UAPI_LINUX_BTRFS_H |
21 | #define _UAPI_LINUX_BTRFS_H |
22 | |
23 | #ifdef __cplusplus |
24 | extern "C" { |
25 | #endif |
26 | |
27 | #include <linux/types.h> |
28 | #include <linux/ioctl.h> |
29 | #include <linux/fs.h> |
30 | |
31 | #define BTRFS_IOCTL_MAGIC 0x94 |
32 | #define BTRFS_VOL_NAME_MAX 255 |
33 | #define BTRFS_LABEL_SIZE 256 |
34 | |
35 | /* this should be 4k */ |
36 | #define BTRFS_PATH_NAME_MAX 4087 |
37 | struct btrfs_ioctl_vol_args { |
38 | __s64 fd; |
39 | char name[BTRFS_PATH_NAME_MAX + 1]; |
40 | }; |
41 | |
42 | #define BTRFS_DEVICE_PATH_NAME_MAX 1024 |
43 | #define BTRFS_SUBVOL_NAME_MAX 4039 |
44 | |
45 | #ifndef __KERNEL__ |
46 | /* Deprecated since 5.7 */ |
47 | # define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) |
48 | #endif |
49 | #define BTRFS_SUBVOL_RDONLY (1ULL << 1) |
50 | #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) |
51 | |
52 | #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) |
53 | |
54 | #define BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4) |
55 | |
56 | #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ |
57 | (BTRFS_SUBVOL_RDONLY | \ |
58 | BTRFS_SUBVOL_QGROUP_INHERIT | \ |
59 | BTRFS_DEVICE_SPEC_BY_ID | \ |
60 | BTRFS_SUBVOL_SPEC_BY_ID) |
61 | |
62 | #define BTRFS_FSID_SIZE 16 |
63 | #define BTRFS_UUID_SIZE 16 |
64 | #define BTRFS_UUID_UNPARSED_SIZE 37 |
65 | |
66 | /* |
67 | * flags definition for qgroup limits |
68 | * |
69 | * Used by: |
70 | * struct btrfs_qgroup_limit.flags |
71 | * struct btrfs_qgroup_limit_item.flags |
72 | */ |
73 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) |
74 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) |
75 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) |
76 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) |
77 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) |
78 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) |
79 | |
80 | struct btrfs_qgroup_limit { |
81 | __u64 flags; |
82 | __u64 max_rfer; |
83 | __u64 max_excl; |
84 | __u64 rsv_rfer; |
85 | __u64 rsv_excl; |
86 | }; |
87 | |
88 | /* |
89 | * flags definition for qgroup inheritance |
90 | * |
91 | * Used by: |
92 | * struct btrfs_qgroup_inherit.flags |
93 | */ |
94 | #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) |
95 | |
96 | struct btrfs_qgroup_inherit { |
97 | __u64 flags; |
98 | __u64 num_qgroups; |
99 | __u64 num_ref_copies; |
100 | __u64 num_excl_copies; |
101 | struct btrfs_qgroup_limit lim; |
102 | __u64 qgroups[]; |
103 | }; |
104 | |
105 | struct btrfs_ioctl_qgroup_limit_args { |
106 | __u64 qgroupid; |
107 | struct btrfs_qgroup_limit lim; |
108 | }; |
109 | |
110 | /* |
111 | * Arguments for specification of subvolumes or devices, supporting by-name or |
112 | * by-id and flags |
113 | * |
114 | * The set of supported flags depends on the ioctl |
115 | * |
116 | * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: |
117 | * - BTRFS_IOC_SUBVOL_GETFLAGS |
118 | * - BTRFS_IOC_SUBVOL_SETFLAGS |
119 | */ |
120 | |
121 | /* Supported flags for BTRFS_IOC_RM_DEV_V2 */ |
122 | #define BTRFS_DEVICE_REMOVE_ARGS_MASK \ |
123 | (BTRFS_DEVICE_SPEC_BY_ID) |
124 | |
125 | /* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */ |
126 | #define BTRFS_SUBVOL_CREATE_ARGS_MASK \ |
127 | (BTRFS_SUBVOL_RDONLY | \ |
128 | BTRFS_SUBVOL_QGROUP_INHERIT) |
129 | |
130 | /* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */ |
131 | #define BTRFS_SUBVOL_DELETE_ARGS_MASK \ |
132 | (BTRFS_SUBVOL_SPEC_BY_ID) |
133 | |
134 | struct btrfs_ioctl_vol_args_v2 { |
135 | __s64 fd; |
136 | __u64 transid; |
137 | __u64 flags; |
138 | union { |
139 | struct { |
140 | __u64 size; |
141 | struct btrfs_qgroup_inherit __user *qgroup_inherit; |
142 | }; |
143 | __u64 unused[4]; |
144 | }; |
145 | union { |
146 | char name[BTRFS_SUBVOL_NAME_MAX + 1]; |
147 | __u64 devid; |
148 | __u64 subvolid; |
149 | }; |
150 | }; |
151 | |
152 | /* |
153 | * structure to report errors and progress to userspace, either as a |
154 | * result of a finished scrub, a canceled scrub or a progress inquiry |
155 | */ |
156 | struct btrfs_scrub_progress { |
157 | __u64 data_extents_scrubbed; /* # of data extents scrubbed */ |
158 | __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ |
159 | __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ |
160 | __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ |
161 | __u64 read_errors; /* # of read errors encountered (EIO) */ |
162 | __u64 csum_errors; /* # of failed csum checks */ |
163 | __u64 verify_errors; /* # of occurrences, where the metadata |
164 | * of a tree block did not match the |
165 | * expected values, like generation or |
166 | * logical */ |
167 | __u64 no_csum; /* # of 4k data block for which no csum |
168 | * is present, probably the result of |
169 | * data written with nodatasum */ |
170 | __u64 csum_discards; /* # of csum for which no data was found |
171 | * in the extent tree. */ |
172 | __u64 super_errors; /* # of bad super blocks encountered */ |
173 | __u64 malloc_errors; /* # of internal kmalloc errors. These |
174 | * will likely cause an incomplete |
175 | * scrub */ |
176 | __u64 uncorrectable_errors; /* # of errors where either no intact |
177 | * copy was found or the writeback |
178 | * failed */ |
179 | __u64 corrected_errors; /* # of errors corrected */ |
180 | __u64 last_physical; /* last physical address scrubbed. In |
181 | * case a scrub was aborted, this can |
182 | * be used to restart the scrub */ |
183 | __u64 unverified_errors; /* # of occurrences where a read for a |
184 | * full (64k) bio failed, but the re- |
185 | * check succeeded for each 4k piece. |
186 | * Intermittent error. */ |
187 | }; |
188 | |
189 | #define BTRFS_SCRUB_READONLY 1 |
190 | #define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY) |
191 | struct btrfs_ioctl_scrub_args { |
192 | __u64 devid; /* in */ |
193 | __u64 start; /* in */ |
194 | __u64 end; /* in */ |
195 | __u64 flags; /* in */ |
196 | struct btrfs_scrub_progress progress; /* out */ |
197 | /* pad to 1k */ |
198 | __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; |
199 | }; |
200 | |
201 | #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
202 | #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 |
203 | struct btrfs_ioctl_dev_replace_start_params { |
204 | __u64 srcdevid; /* in, if 0, use srcdev_name instead */ |
205 | __u64 cont_reading_from_srcdev_mode; /* in, see #define |
206 | * above */ |
207 | __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ |
208 | __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ |
209 | }; |
210 | |
211 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 |
212 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 |
213 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 |
214 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 |
215 | #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 |
216 | struct btrfs_ioctl_dev_replace_status_params { |
217 | __u64 replace_state; /* out, see #define above */ |
218 | __u64 progress_1000; /* out, 0 <= x <= 1000 */ |
219 | __u64 time_started; /* out, seconds since 1-Jan-1970 */ |
220 | __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ |
221 | __u64 num_write_errors; /* out */ |
222 | __u64 num_uncorrectable_read_errors; /* out */ |
223 | }; |
224 | |
225 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 |
226 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 |
227 | #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 |
228 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 |
229 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 |
230 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 |
231 | #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 |
232 | struct btrfs_ioctl_dev_replace_args { |
233 | __u64 cmd; /* in */ |
234 | __u64 result; /* out */ |
235 | |
236 | union { |
237 | struct btrfs_ioctl_dev_replace_start_params start; |
238 | struct btrfs_ioctl_dev_replace_status_params status; |
239 | }; /* in/out */ |
240 | |
241 | __u64 spare[64]; |
242 | }; |
243 | |
244 | struct btrfs_ioctl_dev_info_args { |
245 | __u64 devid; /* in/out */ |
246 | __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ |
247 | __u64 bytes_used; /* out */ |
248 | __u64 total_bytes; /* out */ |
249 | /* |
250 | * Optional, out. |
251 | * |
252 | * Showing the fsid of the device, allowing user space to check if this |
253 | * device is a seeding one. |
254 | * |
255 | * Introduced in v6.3, thus user space still needs to check if kernel |
256 | * changed this value. Older kernel will not touch the values here. |
257 | */ |
258 | __u8 fsid[BTRFS_UUID_SIZE]; |
259 | __u64 unused[377]; /* pad to 4k */ |
260 | __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ |
261 | }; |
262 | |
263 | /* |
264 | * Retrieve information about the filesystem |
265 | */ |
266 | |
267 | /* Request information about checksum type and size */ |
268 | #define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0) |
269 | |
270 | /* Request information about filesystem generation */ |
271 | #define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1) |
272 | /* Request information about filesystem metadata UUID */ |
273 | #define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2) |
274 | |
275 | struct btrfs_ioctl_fs_info_args { |
276 | __u64 max_id; /* out */ |
277 | __u64 num_devices; /* out */ |
278 | __u8 fsid[BTRFS_FSID_SIZE]; /* out */ |
279 | __u32 nodesize; /* out */ |
280 | __u32 sectorsize; /* out */ |
281 | __u32 clone_alignment; /* out */ |
282 | /* See BTRFS_FS_INFO_FLAG_* */ |
283 | __u16 csum_type; /* out */ |
284 | __u16 csum_size; /* out */ |
285 | __u64 flags; /* in/out */ |
286 | __u64 generation; /* out */ |
287 | __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */ |
288 | __u8 reserved[944]; /* pad to 1k */ |
289 | }; |
290 | |
291 | /* |
292 | * feature flags |
293 | * |
294 | * Used by: |
295 | * struct btrfs_ioctl_feature_flags |
296 | */ |
297 | #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) |
298 | /* |
299 | * Older kernels (< 4.9) on big-endian systems produced broken free space tree |
300 | * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions |
301 | * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted. |
302 | * btrfs-progs can also intentionally clear this bit to ask the kernel to |
303 | * rebuild the free space tree, however this might not work on older kernels |
304 | * that do not know about this bit. If not sure, clear the cache manually on |
305 | * first mount when booting older kernel versions. |
306 | */ |
307 | #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1) |
308 | #define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2) |
309 | |
310 | /* |
311 | * Put all block group items into a dedicated block group tree, greatly |
312 | * reducing mount time for large filesystem due to better locality. |
313 | */ |
314 | #define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE (1ULL << 3) |
315 | |
316 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
317 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
318 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
319 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
320 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4) |
321 | |
322 | /* |
323 | * older kernels tried to do bigger metadata blocks, but the |
324 | * code was pretty buggy. Lets not let them try anymore. |
325 | */ |
326 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) |
327 | |
328 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
329 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) |
330 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) |
331 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) |
332 | #define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10) |
333 | #define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11) |
334 | #define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12) |
335 | #define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13) |
336 | #define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14) |
337 | #define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA (1ULL << 16) |
338 | |
339 | struct btrfs_ioctl_feature_flags { |
340 | __u64 compat_flags; |
341 | __u64 compat_ro_flags; |
342 | __u64 incompat_flags; |
343 | }; |
344 | |
345 | /* balance control ioctl modes */ |
346 | #define BTRFS_BALANCE_CTL_PAUSE 1 |
347 | #define BTRFS_BALANCE_CTL_CANCEL 2 |
348 | |
349 | /* |
350 | * this is packed, because it should be exactly the same as its disk |
351 | * byte order counterpart (struct btrfs_disk_balance_args) |
352 | */ |
353 | struct btrfs_balance_args { |
354 | __u64 profiles; |
355 | |
356 | /* |
357 | * usage filter |
358 | * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N' |
359 | * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max |
360 | */ |
361 | union { |
362 | __u64 usage; |
363 | struct { |
364 | __u32 usage_min; |
365 | __u32 usage_max; |
366 | }; |
367 | }; |
368 | __u64 devid; |
369 | __u64 pstart; |
370 | __u64 pend; |
371 | __u64 vstart; |
372 | __u64 vend; |
373 | |
374 | __u64 target; |
375 | |
376 | __u64 flags; |
377 | |
378 | /* |
379 | * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' |
380 | * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum |
381 | * and maximum |
382 | */ |
383 | union { |
384 | __u64 limit; /* limit number of processed chunks */ |
385 | struct { |
386 | __u32 limit_min; |
387 | __u32 limit_max; |
388 | }; |
389 | }; |
390 | |
391 | /* |
392 | * Process chunks that cross stripes_min..stripes_max devices, |
393 | * BTRFS_BALANCE_ARGS_STRIPES_RANGE |
394 | */ |
395 | __u32 stripes_min; |
396 | __u32 stripes_max; |
397 | |
398 | __u64 unused[6]; |
399 | } __attribute__ ((__packed__)); |
400 | |
401 | /* report balance progress to userspace */ |
402 | struct btrfs_balance_progress { |
403 | __u64 expected; /* estimated # of chunks that will be |
404 | * relocated to fulfill the request */ |
405 | __u64 considered; /* # of chunks we have considered so far */ |
406 | __u64 completed; /* # of chunks relocated so far */ |
407 | }; |
408 | |
409 | /* |
410 | * flags definition for balance |
411 | * |
412 | * Restriper's general type filter |
413 | * |
414 | * Used by: |
415 | * btrfs_ioctl_balance_args.flags |
416 | * btrfs_balance_control.flags (internal) |
417 | */ |
418 | #define BTRFS_BALANCE_DATA (1ULL << 0) |
419 | #define BTRFS_BALANCE_SYSTEM (1ULL << 1) |
420 | #define BTRFS_BALANCE_METADATA (1ULL << 2) |
421 | |
422 | #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ |
423 | BTRFS_BALANCE_SYSTEM | \ |
424 | BTRFS_BALANCE_METADATA) |
425 | |
426 | #define BTRFS_BALANCE_FORCE (1ULL << 3) |
427 | #define BTRFS_BALANCE_RESUME (1ULL << 4) |
428 | |
429 | /* |
430 | * flags definitions for per-type balance args |
431 | * |
432 | * Balance filters |
433 | * |
434 | * Used by: |
435 | * struct btrfs_balance_args |
436 | */ |
437 | #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) |
438 | #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) |
439 | #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) |
440 | #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) |
441 | #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) |
442 | #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) |
443 | #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) |
444 | #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) |
445 | #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) |
446 | |
447 | #define BTRFS_BALANCE_ARGS_MASK \ |
448 | (BTRFS_BALANCE_ARGS_PROFILES | \ |
449 | BTRFS_BALANCE_ARGS_USAGE | \ |
450 | BTRFS_BALANCE_ARGS_DEVID | \ |
451 | BTRFS_BALANCE_ARGS_DRANGE | \ |
452 | BTRFS_BALANCE_ARGS_VRANGE | \ |
453 | BTRFS_BALANCE_ARGS_LIMIT | \ |
454 | BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ |
455 | BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ |
456 | BTRFS_BALANCE_ARGS_USAGE_RANGE) |
457 | |
458 | /* |
459 | * Profile changing flags. When SOFT is set we won't relocate chunk if |
460 | * it already has the target profile (even though it may be |
461 | * half-filled). |
462 | */ |
463 | #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) |
464 | #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) |
465 | |
466 | |
467 | /* |
468 | * flags definition for balance state |
469 | * |
470 | * Used by: |
471 | * struct btrfs_ioctl_balance_args.state |
472 | */ |
473 | #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) |
474 | #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) |
475 | #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) |
476 | |
477 | struct btrfs_ioctl_balance_args { |
478 | __u64 flags; /* in/out */ |
479 | __u64 state; /* out */ |
480 | |
481 | struct btrfs_balance_args data; /* in/out */ |
482 | struct btrfs_balance_args meta; /* in/out */ |
483 | struct btrfs_balance_args sys; /* in/out */ |
484 | |
485 | struct btrfs_balance_progress stat; /* out */ |
486 | |
487 | __u64 unused[72]; /* pad to 1k */ |
488 | }; |
489 | |
490 | #define BTRFS_INO_LOOKUP_PATH_MAX 4080 |
491 | struct btrfs_ioctl_ino_lookup_args { |
492 | __u64 treeid; |
493 | __u64 objectid; |
494 | char name[BTRFS_INO_LOOKUP_PATH_MAX]; |
495 | }; |
496 | |
497 | #define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1) |
498 | struct btrfs_ioctl_ino_lookup_user_args { |
499 | /* in, inode number containing the subvolume of 'subvolid' */ |
500 | __u64 dirid; |
501 | /* in */ |
502 | __u64 treeid; |
503 | /* out, name of the subvolume of 'treeid' */ |
504 | char name[BTRFS_VOL_NAME_MAX + 1]; |
505 | /* |
506 | * out, constructed path from the directory with which the ioctl is |
507 | * called to dirid |
508 | */ |
509 | char path[BTRFS_INO_LOOKUP_USER_PATH_MAX]; |
510 | }; |
511 | |
512 | /* Search criteria for the btrfs SEARCH ioctl family. */ |
513 | struct btrfs_ioctl_search_key { |
514 | /* |
515 | * The tree we're searching in. 1 is the tree of tree roots, 2 is the |
516 | * extent tree, etc... |
517 | * |
518 | * A special tree_id value of 0 will cause a search in the subvolume |
519 | * tree that the inode which is passed to the ioctl is part of. |
520 | */ |
521 | __u64 tree_id; /* in */ |
522 | |
523 | /* |
524 | * When doing a tree search, we're actually taking a slice from a |
525 | * linear search space of 136-bit keys. |
526 | * |
527 | * A full 136-bit tree key is composed as: |
528 | * (objectid << 72) + (type << 64) + offset |
529 | * |
530 | * The individual min and max values for objectid, type and offset |
531 | * define the min_key and max_key values for the search range. All |
532 | * metadata items with a key in the interval [min_key, max_key] will be |
533 | * returned. |
534 | * |
535 | * Additionally, we can filter the items returned on transaction id of |
536 | * the metadata block they're stored in by specifying a transid range. |
537 | * Be aware that this transaction id only denotes when the metadata |
538 | * page that currently contains the item got written the last time as |
539 | * result of a COW operation. The number does not have any meaning |
540 | * related to the transaction in which an individual item that is being |
541 | * returned was created or changed. |
542 | */ |
543 | __u64 min_objectid; /* in */ |
544 | __u64 max_objectid; /* in */ |
545 | __u64 min_offset; /* in */ |
546 | __u64 max_offset; /* in */ |
547 | __u64 min_transid; /* in */ |
548 | __u64 max_transid; /* in */ |
549 | __u32 min_type; /* in */ |
550 | __u32 max_type; /* in */ |
551 | |
552 | /* |
553 | * input: The maximum amount of results desired. |
554 | * output: The actual amount of items returned, restricted by any of: |
555 | * - reaching the upper bound of the search range |
556 | * - reaching the input nr_items amount of items |
557 | * - completely filling the supplied memory buffer |
558 | */ |
559 | __u32 nr_items; /* in/out */ |
560 | |
561 | /* align to 64 bits */ |
562 | __u32 unused; |
563 | |
564 | /* some extra for later */ |
565 | __u64 unused1; |
566 | __u64 unused2; |
567 | __u64 unused3; |
568 | __u64 unused4; |
569 | }; |
570 | |
571 | struct { |
572 | __u64 ; |
573 | __u64 ; |
574 | __u64 ; |
575 | __u32 ; |
576 | __u32 ; |
577 | } __attribute__ ((__may_alias__)); |
578 | |
579 | #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) |
580 | /* |
581 | * the buf is an array of search headers where |
582 | * each header is followed by the actual item |
583 | * the type field is expanded to 32 bits for alignment |
584 | */ |
585 | struct btrfs_ioctl_search_args { |
586 | struct btrfs_ioctl_search_key key; |
587 | char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; |
588 | }; |
589 | |
590 | /* |
591 | * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes. |
592 | * The allocated size of the buffer is set in buf_size. |
593 | */ |
594 | struct btrfs_ioctl_search_args_v2 { |
595 | struct btrfs_ioctl_search_key key; /* in/out - search parameters */ |
596 | __u64 buf_size; /* in - size of buffer |
597 | * out - on EOVERFLOW: needed size |
598 | * to store item */ |
599 | __u64 buf[]; /* out - found items */ |
600 | }; |
601 | |
602 | /* With a @src_length of zero, the range from @src_offset->EOF is cloned! */ |
603 | struct btrfs_ioctl_clone_range_args { |
604 | __s64 src_fd; |
605 | __u64 src_offset, src_length; |
606 | __u64 dest_offset; |
607 | }; |
608 | |
609 | /* |
610 | * flags definition for the defrag range ioctl |
611 | * |
612 | * Used by: |
613 | * struct btrfs_ioctl_defrag_range_args.flags |
614 | */ |
615 | #define BTRFS_DEFRAG_RANGE_COMPRESS 1 |
616 | #define BTRFS_DEFRAG_RANGE_START_IO 2 |
617 | struct btrfs_ioctl_defrag_range_args { |
618 | /* start of the defrag operation */ |
619 | __u64 start; |
620 | |
621 | /* number of bytes to defrag, use (u64)-1 to say all */ |
622 | __u64 len; |
623 | |
624 | /* |
625 | * flags for the operation, which can include turning |
626 | * on compression for this one defrag |
627 | */ |
628 | __u64 flags; |
629 | |
630 | /* |
631 | * any extent bigger than this will be considered |
632 | * already defragged. Use 0 to take the kernel default |
633 | * Use 1 to say every single extent must be rewritten |
634 | */ |
635 | __u32 extent_thresh; |
636 | |
637 | /* |
638 | * which compression method to use if turning on compression |
639 | * for this defrag operation. If unspecified, zlib will |
640 | * be used |
641 | */ |
642 | __u32 compress_type; |
643 | |
644 | /* spare for later */ |
645 | __u32 unused[4]; |
646 | }; |
647 | |
648 | |
649 | #define BTRFS_SAME_DATA_DIFFERS 1 |
650 | /* For extent-same ioctl */ |
651 | struct btrfs_ioctl_same_extent_info { |
652 | __s64 fd; /* in - destination file */ |
653 | __u64 logical_offset; /* in - start of extent in destination */ |
654 | __u64 bytes_deduped; /* out - total # of bytes we were able |
655 | * to dedupe from this file */ |
656 | /* status of this dedupe operation: |
657 | * 0 if dedup succeeds |
658 | * < 0 for error |
659 | * == BTRFS_SAME_DATA_DIFFERS if data differs |
660 | */ |
661 | __s32 status; /* out - see above description */ |
662 | __u32 reserved; |
663 | }; |
664 | |
665 | struct btrfs_ioctl_same_args { |
666 | __u64 logical_offset; /* in - start of extent in source */ |
667 | __u64 length; /* in - length of extent */ |
668 | __u16 dest_count; /* in - total elements in info array */ |
669 | __u16 reserved1; |
670 | __u32 reserved2; |
671 | struct btrfs_ioctl_same_extent_info info[]; |
672 | }; |
673 | |
674 | struct btrfs_ioctl_space_info { |
675 | __u64 flags; |
676 | __u64 total_bytes; |
677 | __u64 used_bytes; |
678 | }; |
679 | |
680 | struct btrfs_ioctl_space_args { |
681 | __u64 space_slots; |
682 | __u64 total_spaces; |
683 | struct btrfs_ioctl_space_info spaces[]; |
684 | }; |
685 | |
686 | struct btrfs_data_container { |
687 | __u32 bytes_left; /* out -- bytes not needed to deliver output */ |
688 | __u32 bytes_missing; /* out -- additional bytes needed for result */ |
689 | __u32 elem_cnt; /* out */ |
690 | __u32 elem_missed; /* out */ |
691 | __u64 val[]; /* out */ |
692 | }; |
693 | |
694 | struct btrfs_ioctl_ino_path_args { |
695 | __u64 inum; /* in */ |
696 | __u64 size; /* in */ |
697 | __u64 reserved[4]; |
698 | /* struct btrfs_data_container *fspath; out */ |
699 | __u64 fspath; /* out */ |
700 | }; |
701 | |
702 | struct btrfs_ioctl_logical_ino_args { |
703 | __u64 logical; /* in */ |
704 | __u64 size; /* in */ |
705 | __u64 reserved[3]; /* must be 0 for now */ |
706 | __u64 flags; /* in, v2 only */ |
707 | /* struct btrfs_data_container *inodes; out */ |
708 | __u64 inodes; |
709 | }; |
710 | |
711 | /* |
712 | * Return every ref to the extent, not just those containing logical block. |
713 | * Requires logical == extent bytenr. |
714 | */ |
715 | #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) |
716 | |
717 | enum btrfs_dev_stat_values { |
718 | /* disk I/O failure stats */ |
719 | BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ |
720 | BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ |
721 | BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ |
722 | |
723 | /* stats for indirect indications for I/O failures */ |
724 | BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or |
725 | * contents is illegal: this is an |
726 | * indication that the block was damaged |
727 | * during read or write, or written to |
728 | * wrong location or read from wrong |
729 | * location */ |
730 | BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not |
731 | * been written */ |
732 | |
733 | BTRFS_DEV_STAT_VALUES_MAX |
734 | }; |
735 | |
736 | /* Reset statistics after reading; needs SYS_ADMIN capability */ |
737 | #define BTRFS_DEV_STATS_RESET (1ULL << 0) |
738 | |
739 | struct btrfs_ioctl_get_dev_stats { |
740 | __u64 devid; /* in */ |
741 | __u64 nr_items; /* in/out */ |
742 | __u64 flags; /* in/out */ |
743 | |
744 | /* out values: */ |
745 | __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; |
746 | |
747 | /* |
748 | * This pads the struct to 1032 bytes. It was originally meant to pad to |
749 | * 1024 bytes, but when adding the flags field, the padding calculation |
750 | * was not adjusted. |
751 | */ |
752 | __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; |
753 | }; |
754 | |
755 | #define BTRFS_QUOTA_CTL_ENABLE 1 |
756 | #define BTRFS_QUOTA_CTL_DISABLE 2 |
757 | #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 |
758 | #define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4 |
759 | struct btrfs_ioctl_quota_ctl_args { |
760 | __u64 cmd; |
761 | __u64 status; |
762 | }; |
763 | |
764 | struct btrfs_ioctl_quota_rescan_args { |
765 | __u64 flags; |
766 | __u64 progress; |
767 | __u64 reserved[6]; |
768 | }; |
769 | |
770 | struct btrfs_ioctl_qgroup_assign_args { |
771 | __u64 assign; |
772 | __u64 src; |
773 | __u64 dst; |
774 | }; |
775 | |
776 | struct btrfs_ioctl_qgroup_create_args { |
777 | __u64 create; |
778 | __u64 qgroupid; |
779 | }; |
780 | struct btrfs_ioctl_timespec { |
781 | __u64 sec; |
782 | __u32 nsec; |
783 | }; |
784 | |
785 | struct btrfs_ioctl_received_subvol_args { |
786 | char uuid[BTRFS_UUID_SIZE]; /* in */ |
787 | __u64 stransid; /* in */ |
788 | __u64 rtransid; /* out */ |
789 | struct btrfs_ioctl_timespec stime; /* in */ |
790 | struct btrfs_ioctl_timespec rtime; /* out */ |
791 | __u64 flags; /* in */ |
792 | __u64 reserved[16]; /* in */ |
793 | }; |
794 | |
795 | /* |
796 | * Caller doesn't want file data in the send stream, even if the |
797 | * search of clone sources doesn't find an extent. UPDATE_EXTENT |
798 | * commands will be sent instead of WRITE commands. |
799 | */ |
800 | #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 |
801 | |
802 | /* |
803 | * Do not add the leading stream header. Used when multiple snapshots |
804 | * are sent back to back. |
805 | */ |
806 | #define 0x2 |
807 | |
808 | /* |
809 | * Omit the command at the end of the stream that indicated the end |
810 | * of the stream. This option is used when multiple snapshots are |
811 | * sent back to back. |
812 | */ |
813 | #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 |
814 | |
815 | /* |
816 | * Read the protocol version in the structure |
817 | */ |
818 | #define BTRFS_SEND_FLAG_VERSION 0x8 |
819 | |
820 | /* |
821 | * Send compressed data using the ENCODED_WRITE command instead of decompressing |
822 | * the data and sending it with the WRITE command. This requires protocol |
823 | * version >= 2. |
824 | */ |
825 | #define BTRFS_SEND_FLAG_COMPRESSED 0x10 |
826 | |
827 | #define BTRFS_SEND_FLAG_MASK \ |
828 | (BTRFS_SEND_FLAG_NO_FILE_DATA | \ |
829 | BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ |
830 | BTRFS_SEND_FLAG_OMIT_END_CMD | \ |
831 | BTRFS_SEND_FLAG_VERSION | \ |
832 | BTRFS_SEND_FLAG_COMPRESSED) |
833 | |
834 | struct btrfs_ioctl_send_args { |
835 | __s64 send_fd; /* in */ |
836 | __u64 clone_sources_count; /* in */ |
837 | __u64 __user *clone_sources; /* in */ |
838 | __u64 parent_root; /* in */ |
839 | __u64 flags; /* in */ |
840 | __u32 version; /* in */ |
841 | __u8 reserved[28]; /* in */ |
842 | }; |
843 | |
844 | /* |
845 | * Information about a fs tree root. |
846 | * |
847 | * All items are filled by the ioctl |
848 | */ |
849 | struct btrfs_ioctl_get_subvol_info_args { |
850 | /* Id of this subvolume */ |
851 | __u64 treeid; |
852 | |
853 | /* Name of this subvolume, used to get the real name at mount point */ |
854 | char name[BTRFS_VOL_NAME_MAX + 1]; |
855 | |
856 | /* |
857 | * Id of the subvolume which contains this subvolume. |
858 | * Zero for top-level subvolume or a deleted subvolume. |
859 | */ |
860 | __u64 parent_id; |
861 | |
862 | /* |
863 | * Inode number of the directory which contains this subvolume. |
864 | * Zero for top-level subvolume or a deleted subvolume |
865 | */ |
866 | __u64 dirid; |
867 | |
868 | /* Latest transaction id of this subvolume */ |
869 | __u64 generation; |
870 | |
871 | /* Flags of this subvolume */ |
872 | __u64 flags; |
873 | |
874 | /* UUID of this subvolume */ |
875 | __u8 uuid[BTRFS_UUID_SIZE]; |
876 | |
877 | /* |
878 | * UUID of the subvolume of which this subvolume is a snapshot. |
879 | * All zero for a non-snapshot subvolume. |
880 | */ |
881 | __u8 parent_uuid[BTRFS_UUID_SIZE]; |
882 | |
883 | /* |
884 | * UUID of the subvolume from which this subvolume was received. |
885 | * All zero for non-received subvolume. |
886 | */ |
887 | __u8 received_uuid[BTRFS_UUID_SIZE]; |
888 | |
889 | /* Transaction id indicating when change/create/send/receive happened */ |
890 | __u64 ctransid; |
891 | __u64 otransid; |
892 | __u64 stransid; |
893 | __u64 rtransid; |
894 | /* Time corresponding to c/o/s/rtransid */ |
895 | struct btrfs_ioctl_timespec ctime; |
896 | struct btrfs_ioctl_timespec otime; |
897 | struct btrfs_ioctl_timespec stime; |
898 | struct btrfs_ioctl_timespec rtime; |
899 | |
900 | /* Must be zero */ |
901 | __u64 reserved[8]; |
902 | }; |
903 | |
904 | #define BTRFS_MAX_ROOTREF_BUFFER_NUM 255 |
905 | struct btrfs_ioctl_get_subvol_rootref_args { |
906 | /* in/out, minimum id of rootref's treeid to be searched */ |
907 | __u64 min_treeid; |
908 | |
909 | /* out */ |
910 | struct { |
911 | __u64 treeid; |
912 | __u64 dirid; |
913 | } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM]; |
914 | |
915 | /* out, number of found items */ |
916 | __u8 num_items; |
917 | __u8 align[7]; |
918 | }; |
919 | |
920 | /* |
921 | * Data and metadata for an encoded read or write. |
922 | * |
923 | * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g., |
924 | * compression). This can be used to read the compressed contents of a file or |
925 | * write pre-compressed data directly to a file. |
926 | * |
927 | * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially |
928 | * preadv/pwritev with additional metadata about how the data is encoded and the |
929 | * size of the unencoded data. |
930 | * |
931 | * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills |
932 | * the metadata fields, and returns the size of the encoded data. It reads one |
933 | * extent per call. It can also read data which is not encoded. |
934 | * |
935 | * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data |
936 | * from the iovecs, and returns the size of the encoded data. Note that the |
937 | * encoded data is not validated when it is written; if it is not valid (e.g., |
938 | * it cannot be decompressed), then a subsequent read may return an error. |
939 | * |
940 | * Since the filesystem page cache contains decoded data, encoded I/O bypasses |
941 | * the page cache. Encoded I/O requires CAP_SYS_ADMIN. |
942 | */ |
943 | struct btrfs_ioctl_encoded_io_args { |
944 | /* Input parameters for both reads and writes. */ |
945 | |
946 | /* |
947 | * iovecs containing encoded data. |
948 | * |
949 | * For reads, if the size of the encoded data is larger than the sum of |
950 | * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with |
951 | * ENOBUFS. |
952 | * |
953 | * For writes, the size of the encoded data is the sum of iov[n].iov_len |
954 | * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may |
955 | * increase in the future). This must also be less than or equal to |
956 | * unencoded_len. |
957 | */ |
958 | const struct iovec __user *iov; |
959 | /* Number of iovecs. */ |
960 | unsigned long iovcnt; |
961 | /* |
962 | * Offset in file. |
963 | * |
964 | * For writes, must be aligned to the sector size of the filesystem. |
965 | */ |
966 | __s64 offset; |
967 | /* Currently must be zero. */ |
968 | __u64 flags; |
969 | |
970 | /* |
971 | * For reads, the following members are output parameters that will |
972 | * contain the returned metadata for the encoded data. |
973 | * For writes, the following members must be set to the metadata for the |
974 | * encoded data. |
975 | */ |
976 | |
977 | /* |
978 | * Length of the data in the file. |
979 | * |
980 | * Must be less than or equal to unencoded_len - unencoded_offset. For |
981 | * writes, must be aligned to the sector size of the filesystem unless |
982 | * the data ends at or beyond the current end of the file. |
983 | */ |
984 | __u64 len; |
985 | /* |
986 | * Length of the unencoded (i.e., decrypted and decompressed) data. |
987 | * |
988 | * For writes, must be no more than 128 KiB (this limit may increase in |
989 | * the future). If the unencoded data is actually longer than |
990 | * unencoded_len, then it is truncated; if it is shorter, then it is |
991 | * extended with zeroes. |
992 | */ |
993 | __u64 unencoded_len; |
994 | /* |
995 | * Offset from the first byte of the unencoded data to the first byte of |
996 | * logical data in the file. |
997 | * |
998 | * Must be less than unencoded_len. |
999 | */ |
1000 | __u64 unencoded_offset; |
1001 | /* |
1002 | * BTRFS_ENCODED_IO_COMPRESSION_* type. |
1003 | * |
1004 | * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE. |
1005 | */ |
1006 | __u32 compression; |
1007 | /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */ |
1008 | __u32 encryption; |
1009 | /* |
1010 | * Reserved for future expansion. |
1011 | * |
1012 | * For reads, always returned as zero. Users should check for non-zero |
1013 | * bytes. If there are any, then the kernel has a newer version of this |
1014 | * structure with additional information that the user definition is |
1015 | * missing. |
1016 | * |
1017 | * For writes, must be zeroed. |
1018 | */ |
1019 | __u8 reserved[64]; |
1020 | }; |
1021 | |
1022 | /* Data is not compressed. */ |
1023 | #define BTRFS_ENCODED_IO_COMPRESSION_NONE 0 |
1024 | /* Data is compressed as a single zlib stream. */ |
1025 | #define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1 |
1026 | /* |
1027 | * Data is compressed as a single zstd frame with the windowLog compression |
1028 | * parameter set to no more than 17. |
1029 | */ |
1030 | #define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2 |
1031 | /* |
1032 | * Data is compressed sector by sector (using the sector size indicated by the |
1033 | * name of the constant) with LZO1X and wrapped in the format documented in |
1034 | * fs/btrfs/lzo.c. For writes, the compression sector size must match the |
1035 | * filesystem sector size. |
1036 | */ |
1037 | #define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3 |
1038 | #define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4 |
1039 | #define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5 |
1040 | #define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6 |
1041 | #define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7 |
1042 | #define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8 |
1043 | |
1044 | /* Data is not encrypted. */ |
1045 | #define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0 |
1046 | #define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1 |
1047 | |
1048 | /* Error codes as returned by the kernel */ |
1049 | enum btrfs_err_code { |
1050 | BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, |
1051 | BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, |
1052 | BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, |
1053 | BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, |
1054 | BTRFS_ERROR_DEV_TGT_REPLACE, |
1055 | BTRFS_ERROR_DEV_MISSING_NOT_FOUND, |
1056 | BTRFS_ERROR_DEV_ONLY_WRITABLE, |
1057 | BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS, |
1058 | BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET, |
1059 | BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET, |
1060 | }; |
1061 | |
1062 | #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ |
1063 | struct btrfs_ioctl_vol_args) |
1064 | #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ |
1065 | struct btrfs_ioctl_vol_args) |
1066 | #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ |
1067 | struct btrfs_ioctl_vol_args) |
1068 | #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ |
1069 | struct btrfs_ioctl_vol_args) |
1070 | #define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \ |
1071 | struct btrfs_ioctl_vol_args) |
1072 | /* trans start and trans end are dangerous, and only for |
1073 | * use by applications that know how to avoid the |
1074 | * resulting deadlocks |
1075 | */ |
1076 | #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) |
1077 | #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) |
1078 | #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) |
1079 | |
1080 | #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) |
1081 | #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ |
1082 | struct btrfs_ioctl_vol_args) |
1083 | #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ |
1084 | struct btrfs_ioctl_vol_args) |
1085 | #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ |
1086 | struct btrfs_ioctl_vol_args) |
1087 | |
1088 | #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ |
1089 | struct btrfs_ioctl_clone_range_args) |
1090 | |
1091 | #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ |
1092 | struct btrfs_ioctl_vol_args) |
1093 | #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ |
1094 | struct btrfs_ioctl_vol_args) |
1095 | #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ |
1096 | struct btrfs_ioctl_defrag_range_args) |
1097 | #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ |
1098 | struct btrfs_ioctl_search_args) |
1099 | #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ |
1100 | struct btrfs_ioctl_search_args_v2) |
1101 | #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ |
1102 | struct btrfs_ioctl_ino_lookup_args) |
1103 | #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) |
1104 | #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ |
1105 | struct btrfs_ioctl_space_args) |
1106 | #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) |
1107 | #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) |
1108 | #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ |
1109 | struct btrfs_ioctl_vol_args_v2) |
1110 | #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ |
1111 | struct btrfs_ioctl_vol_args_v2) |
1112 | #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) |
1113 | #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) |
1114 | #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ |
1115 | struct btrfs_ioctl_scrub_args) |
1116 | #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) |
1117 | #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ |
1118 | struct btrfs_ioctl_scrub_args) |
1119 | #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ |
1120 | struct btrfs_ioctl_dev_info_args) |
1121 | #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ |
1122 | struct btrfs_ioctl_fs_info_args) |
1123 | #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ |
1124 | struct btrfs_ioctl_balance_args) |
1125 | #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) |
1126 | #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ |
1127 | struct btrfs_ioctl_balance_args) |
1128 | #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ |
1129 | struct btrfs_ioctl_ino_path_args) |
1130 | #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ |
1131 | struct btrfs_ioctl_logical_ino_args) |
1132 | #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ |
1133 | struct btrfs_ioctl_received_subvol_args) |
1134 | #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) |
1135 | #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ |
1136 | struct btrfs_ioctl_vol_args) |
1137 | #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ |
1138 | struct btrfs_ioctl_quota_ctl_args) |
1139 | #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ |
1140 | struct btrfs_ioctl_qgroup_assign_args) |
1141 | #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ |
1142 | struct btrfs_ioctl_qgroup_create_args) |
1143 | #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ |
1144 | struct btrfs_ioctl_qgroup_limit_args) |
1145 | #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ |
1146 | struct btrfs_ioctl_quota_rescan_args) |
1147 | #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ |
1148 | struct btrfs_ioctl_quota_rescan_args) |
1149 | #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) |
1150 | #define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL |
1151 | #define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL |
1152 | #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ |
1153 | struct btrfs_ioctl_get_dev_stats) |
1154 | #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ |
1155 | struct btrfs_ioctl_dev_replace_args) |
1156 | #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ |
1157 | struct btrfs_ioctl_same_args) |
1158 | #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ |
1159 | struct btrfs_ioctl_feature_flags) |
1160 | #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ |
1161 | struct btrfs_ioctl_feature_flags[2]) |
1162 | #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ |
1163 | struct btrfs_ioctl_feature_flags[3]) |
1164 | #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ |
1165 | struct btrfs_ioctl_vol_args_v2) |
1166 | #define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ |
1167 | struct btrfs_ioctl_logical_ino_args) |
1168 | #define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \ |
1169 | struct btrfs_ioctl_get_subvol_info_args) |
1170 | #define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \ |
1171 | struct btrfs_ioctl_get_subvol_rootref_args) |
1172 | #define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \ |
1173 | struct btrfs_ioctl_ino_lookup_user_args) |
1174 | #define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \ |
1175 | struct btrfs_ioctl_vol_args_v2) |
1176 | #define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \ |
1177 | struct btrfs_ioctl_encoded_io_args) |
1178 | #define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ |
1179 | struct btrfs_ioctl_encoded_io_args) |
1180 | |
1181 | #ifdef __cplusplus |
1182 | } |
1183 | #endif |
1184 | |
1185 | #endif /* _UAPI_LINUX_BTRFS_H */ |
1186 | |