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