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Merge tag 'mm-hotfixes-stable-2025-07-11-16-16' of git://git.kernel.org/pub/scm/linux...
[linux-block.git] / include / uapi / linux / btrfs.h
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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
24extern "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
37struct 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
80struct 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#define BTRFS_QGROUP_INHERIT_FLAGS_SUPP (BTRFS_QGROUP_INHERIT_SET_LIMITS)
96
97struct btrfs_qgroup_inherit {
98 __u64 flags;
99 __u64 num_qgroups;
100 __u64 num_ref_copies;
101 __u64 num_excl_copies;
102 struct btrfs_qgroup_limit lim;
103 __u64 qgroups[];
104};
105
106struct btrfs_ioctl_qgroup_limit_args {
107 __u64 qgroupid;
108 struct btrfs_qgroup_limit lim;
109};
110
111/*
112 * Arguments for specification of subvolumes or devices, supporting by-name or
113 * by-id and flags
114 *
115 * The set of supported flags depends on the ioctl
116 *
117 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls:
118 * - BTRFS_IOC_SUBVOL_GETFLAGS
119 * - BTRFS_IOC_SUBVOL_SETFLAGS
120 */
121
122/* Supported flags for BTRFS_IOC_RM_DEV_V2 */
123#define BTRFS_DEVICE_REMOVE_ARGS_MASK \
124 (BTRFS_DEVICE_SPEC_BY_ID)
125
126/* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */
127#define BTRFS_SUBVOL_CREATE_ARGS_MASK \
128 (BTRFS_SUBVOL_RDONLY | \
129 BTRFS_SUBVOL_QGROUP_INHERIT)
130
131/* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */
132#define BTRFS_SUBVOL_DELETE_ARGS_MASK \
133 (BTRFS_SUBVOL_SPEC_BY_ID)
134
135struct btrfs_ioctl_vol_args_v2 {
136 __s64 fd;
137 __u64 transid;
138 __u64 flags;
139 union {
140 struct {
141 __u64 size;
142 struct btrfs_qgroup_inherit __user *qgroup_inherit;
143 };
144 __u64 unused[4];
145 };
146 union {
147 char name[BTRFS_SUBVOL_NAME_MAX + 1];
148 __u64 devid;
149 __u64 subvolid;
150 };
151};
152
153/*
154 * structure to report errors and progress to userspace, either as a
155 * result of a finished scrub, a canceled scrub or a progress inquiry
156 */
157struct btrfs_scrub_progress {
158 __u64 data_extents_scrubbed; /* # of data extents scrubbed */
159 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
160 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
161 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
162 __u64 read_errors; /* # of read errors encountered (EIO) */
163 __u64 csum_errors; /* # of failed csum checks */
164 __u64 verify_errors; /* # of occurrences, where the metadata
165 * of a tree block did not match the
166 * expected values, like generation or
167 * logical */
168 __u64 no_csum; /* # of 4k data block for which no csum
169 * is present, probably the result of
170 * data written with nodatasum */
171 __u64 csum_discards; /* # of csum for which no data was found
172 * in the extent tree. */
173 __u64 super_errors; /* # of bad super blocks encountered */
174 __u64 malloc_errors; /* # of internal kmalloc errors. These
175 * will likely cause an incomplete
176 * scrub */
177 __u64 uncorrectable_errors; /* # of errors where either no intact
178 * copy was found or the writeback
179 * failed */
180 __u64 corrected_errors; /* # of errors corrected */
181 __u64 last_physical; /* last physical address scrubbed. In
182 * case a scrub was aborted, this can
183 * be used to restart the scrub */
184 __u64 unverified_errors; /* # of occurrences where a read for a
185 * full (64k) bio failed, but the re-
186 * check succeeded for each 4k piece.
187 * Intermittent error. */
188};
189
190#define BTRFS_SCRUB_READONLY 1
191#define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY)
192struct btrfs_ioctl_scrub_args {
193 __u64 devid; /* in */
194 __u64 start; /* in */
195 __u64 end; /* in */
196 __u64 flags; /* in */
197 struct btrfs_scrub_progress progress; /* out */
198 /* pad to 1k */
199 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
200};
201
202#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0
203#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
204struct btrfs_ioctl_dev_replace_start_params {
205 __u64 srcdevid; /* in, if 0, use srcdev_name instead */
206 __u64 cont_reading_from_srcdev_mode; /* in, see #define
207 * above */
208 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
209 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
210};
211
212#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0
213#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1
214#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
215#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
216#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
217struct btrfs_ioctl_dev_replace_status_params {
218 __u64 replace_state; /* out, see #define above */
219 __u64 progress_1000; /* out, 0 <= x <= 1000 */
220 __u64 time_started; /* out, seconds since 1-Jan-1970 */
221 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */
222 __u64 num_write_errors; /* out */
223 __u64 num_uncorrectable_read_errors; /* out */
224};
225
226#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0
227#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1
228#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2
229#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0
230#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1
231#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2
232#define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3
233struct btrfs_ioctl_dev_replace_args {
234 __u64 cmd; /* in */
235 __u64 result; /* out */
236
237 union {
238 struct btrfs_ioctl_dev_replace_start_params start;
239 struct btrfs_ioctl_dev_replace_status_params status;
240 }; /* in/out */
241
242 __u64 spare[64];
243};
244
245struct btrfs_ioctl_dev_info_args {
246 __u64 devid; /* in/out */
247 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
248 __u64 bytes_used; /* out */
249 __u64 total_bytes; /* out */
250 /*
251 * Optional, out.
252 *
253 * Showing the fsid of the device, allowing user space to check if this
254 * device is a seeding one.
255 *
256 * Introduced in v6.3, thus user space still needs to check if kernel
257 * changed this value. Older kernel will not touch the values here.
258 */
259 __u8 fsid[BTRFS_UUID_SIZE];
260 __u64 unused[377]; /* pad to 4k */
261 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
262};
263
264/*
265 * Retrieve information about the filesystem
266 */
267
268/* Request information about checksum type and size */
269#define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0)
270
271/* Request information about filesystem generation */
272#define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1)
273/* Request information about filesystem metadata UUID */
274#define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2)
275
276struct btrfs_ioctl_fs_info_args {
277 __u64 max_id; /* out */
278 __u64 num_devices; /* out */
279 __u8 fsid[BTRFS_FSID_SIZE]; /* out */
280 __u32 nodesize; /* out */
281 __u32 sectorsize; /* out */
282 __u32 clone_alignment; /* out */
283 /* See BTRFS_FS_INFO_FLAG_* */
284 __u16 csum_type; /* out */
285 __u16 csum_size; /* out */
286 __u64 flags; /* in/out */
287 __u64 generation; /* out */
288 __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */
289 __u8 reserved[944]; /* pad to 1k */
290};
291
292/*
293 * feature flags
294 *
295 * Used by:
296 * struct btrfs_ioctl_feature_flags
297 */
298#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0)
299/*
300 * Older kernels (< 4.9) on big-endian systems produced broken free space tree
301 * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions
302 * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted.
303 * btrfs-progs can also intentionally clear this bit to ask the kernel to
304 * rebuild the free space tree, however this might not work on older kernels
305 * that do not know about this bit. If not sure, clear the cache manually on
306 * first mount when booting older kernel versions.
307 */
308#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1)
309#define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2)
310
311/*
312 * Put all block group items into a dedicated block group tree, greatly
313 * reducing mount time for large filesystem due to better locality.
314 */
315#define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE (1ULL << 3)
316
317#define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0)
318#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1)
319#define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2)
320#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3)
321#define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4)
322
323/*
324 * older kernels tried to do bigger metadata blocks, but the
325 * code was pretty buggy. Lets not let them try anymore.
326 */
327#define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5)
328
329#define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6)
330#define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7)
331#define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8)
332#define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9)
333#define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10)
334#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)
335#define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12)
336#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13)
337#define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14)
338#define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA (1ULL << 16)
339
340struct btrfs_ioctl_feature_flags {
341 __u64 compat_flags;
342 __u64 compat_ro_flags;
343 __u64 incompat_flags;
344};
345
346/* balance control ioctl modes */
347#define BTRFS_BALANCE_CTL_PAUSE 1
348#define BTRFS_BALANCE_CTL_CANCEL 2
349
350/*
351 * this is packed, because it should be exactly the same as its disk
352 * byte order counterpart (struct btrfs_disk_balance_args)
353 */
354struct btrfs_balance_args {
355 __u64 profiles;
356
357 /*
358 * usage filter
359 * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N'
360 * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max
361 */
362 union {
363 __u64 usage;
364 struct {
365 __u32 usage_min;
366 __u32 usage_max;
367 };
368 };
369 __u64 devid;
370 __u64 pstart;
371 __u64 pend;
372 __u64 vstart;
373 __u64 vend;
374
375 __u64 target;
376
377 __u64 flags;
378
379 /*
380 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit'
381 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum
382 * and maximum
383 */
384 union {
385 __u64 limit; /* limit number of processed chunks */
386 struct {
387 __u32 limit_min;
388 __u32 limit_max;
389 };
390 };
391
392 /*
393 * Process chunks that cross stripes_min..stripes_max devices,
394 * BTRFS_BALANCE_ARGS_STRIPES_RANGE
395 */
396 __u32 stripes_min;
397 __u32 stripes_max;
398
399 __u64 unused[6];
400} __attribute__ ((__packed__));
401
402/* report balance progress to userspace */
403struct btrfs_balance_progress {
404 __u64 expected; /* estimated # of chunks that will be
405 * relocated to fulfill the request */
406 __u64 considered; /* # of chunks we have considered so far */
407 __u64 completed; /* # of chunks relocated so far */
408};
409
410/*
411 * flags definition for balance
412 *
413 * Restriper's general type filter
414 *
415 * Used by:
416 * btrfs_ioctl_balance_args.flags
417 * btrfs_balance_control.flags (internal)
418 */
419#define BTRFS_BALANCE_DATA (1ULL << 0)
420#define BTRFS_BALANCE_SYSTEM (1ULL << 1)
421#define BTRFS_BALANCE_METADATA (1ULL << 2)
422
423#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \
424 BTRFS_BALANCE_SYSTEM | \
425 BTRFS_BALANCE_METADATA)
426
427#define BTRFS_BALANCE_FORCE (1ULL << 3)
428#define BTRFS_BALANCE_RESUME (1ULL << 4)
429
430/*
431 * flags definitions for per-type balance args
432 *
433 * Balance filters
434 *
435 * Used by:
436 * struct btrfs_balance_args
437 */
438#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0)
439#define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1)
440#define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2)
441#define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3)
442#define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4)
443#define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5)
444#define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6)
445#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7)
446#define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10)
447
448#define BTRFS_BALANCE_ARGS_MASK \
449 (BTRFS_BALANCE_ARGS_PROFILES | \
450 BTRFS_BALANCE_ARGS_USAGE | \
451 BTRFS_BALANCE_ARGS_DEVID | \
452 BTRFS_BALANCE_ARGS_DRANGE | \
453 BTRFS_BALANCE_ARGS_VRANGE | \
454 BTRFS_BALANCE_ARGS_LIMIT | \
455 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \
456 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \
457 BTRFS_BALANCE_ARGS_USAGE_RANGE)
458
459/*
460 * Profile changing flags. When SOFT is set we won't relocate chunk if
461 * it already has the target profile (even though it may be
462 * half-filled).
463 */
464#define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8)
465#define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9)
466
467
468/*
469 * flags definition for balance state
470 *
471 * Used by:
472 * struct btrfs_ioctl_balance_args.state
473 */
474#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
475#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
476#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
477
478struct btrfs_ioctl_balance_args {
479 __u64 flags; /* in/out */
480 __u64 state; /* out */
481
482 struct btrfs_balance_args data; /* in/out */
483 struct btrfs_balance_args meta; /* in/out */
484 struct btrfs_balance_args sys; /* in/out */
485
486 struct btrfs_balance_progress stat; /* out */
487
488 __u64 unused[72]; /* pad to 1k */
489};
490
491#define BTRFS_INO_LOOKUP_PATH_MAX 4080
492struct btrfs_ioctl_ino_lookup_args {
493 __u64 treeid;
494 __u64 objectid;
495 char name[BTRFS_INO_LOOKUP_PATH_MAX];
496};
497
498#define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1)
499struct btrfs_ioctl_ino_lookup_user_args {
500 /* in, inode number containing the subvolume of 'subvolid' */
501 __u64 dirid;
502 /* in */
503 __u64 treeid;
504 /* out, name of the subvolume of 'treeid' */
505 char name[BTRFS_VOL_NAME_MAX + 1];
506 /*
507 * out, constructed path from the directory with which the ioctl is
508 * called to dirid
509 */
510 char path[BTRFS_INO_LOOKUP_USER_PATH_MAX];
511};
512
513/* Search criteria for the btrfs SEARCH ioctl family. */
514struct btrfs_ioctl_search_key {
515 /*
516 * The tree we're searching in. 1 is the tree of tree roots, 2 is the
517 * extent tree, etc...
518 *
519 * A special tree_id value of 0 will cause a search in the subvolume
520 * tree that the inode which is passed to the ioctl is part of.
521 */
522 __u64 tree_id; /* in */
523
524 /*
525 * When doing a tree search, we're actually taking a slice from a
526 * linear search space of 136-bit keys.
527 *
528 * A full 136-bit tree key is composed as:
529 * (objectid << 72) + (type << 64) + offset
530 *
531 * The individual min and max values for objectid, type and offset
532 * define the min_key and max_key values for the search range. All
533 * metadata items with a key in the interval [min_key, max_key] will be
534 * returned.
535 *
536 * Additionally, we can filter the items returned on transaction id of
537 * the metadata block they're stored in by specifying a transid range.
538 * Be aware that this transaction id only denotes when the metadata
539 * page that currently contains the item got written the last time as
540 * result of a COW operation. The number does not have any meaning
541 * related to the transaction in which an individual item that is being
542 * returned was created or changed.
543 */
544 __u64 min_objectid; /* in */
545 __u64 max_objectid; /* in */
546 __u64 min_offset; /* in */
547 __u64 max_offset; /* in */
548 __u64 min_transid; /* in */
549 __u64 max_transid; /* in */
550 __u32 min_type; /* in */
551 __u32 max_type; /* in */
552
553 /*
554 * input: The maximum amount of results desired.
555 * output: The actual amount of items returned, restricted by any of:
556 * - reaching the upper bound of the search range
557 * - reaching the input nr_items amount of items
558 * - completely filling the supplied memory buffer
559 */
560 __u32 nr_items; /* in/out */
561
562 /* align to 64 bits */
563 __u32 unused;
564
565 /* some extra for later */
566 __u64 unused1;
567 __u64 unused2;
568 __u64 unused3;
569 __u64 unused4;
570};
571
572struct btrfs_ioctl_search_header {
573 __u64 transid;
574 __u64 objectid;
575 __u64 offset;
576 __u32 type;
577 __u32 len;
578} __attribute__ ((__may_alias__));
579
580#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
581/*
582 * the buf is an array of search headers where
583 * each header is followed by the actual item
584 * the type field is expanded to 32 bits for alignment
585 */
586struct btrfs_ioctl_search_args {
587 struct btrfs_ioctl_search_key key;
588 char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
589};
590
591/*
592 * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes.
593 * The allocated size of the buffer is set in buf_size.
594 */
595struct btrfs_ioctl_search_args_v2 {
596 struct btrfs_ioctl_search_key key; /* in/out - search parameters */
597 __u64 buf_size; /* in - size of buffer
598 * out - on EOVERFLOW: needed size
599 * to store item */
600 __u64 buf[]; /* out - found items */
601};
602
603/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
604struct btrfs_ioctl_clone_range_args {
605 __s64 src_fd;
606 __u64 src_offset, src_length;
607 __u64 dest_offset;
608};
609
610/*
611 * flags definition for the defrag range ioctl
612 *
613 * Used by:
614 * struct btrfs_ioctl_defrag_range_args.flags
615 */
616#define BTRFS_DEFRAG_RANGE_COMPRESS 1
617#define BTRFS_DEFRAG_RANGE_START_IO 2
618#define BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL 4
619#define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \
620 BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL | \
621 BTRFS_DEFRAG_RANGE_START_IO)
622
623struct btrfs_ioctl_defrag_range_args {
624 /* start of the defrag operation */
625 __u64 start;
626
627 /* number of bytes to defrag, use (u64)-1 to say all */
628 __u64 len;
629
630 /*
631 * flags for the operation, which can include turning
632 * on compression for this one defrag
633 */
634 __u64 flags;
635
636 /*
637 * any extent bigger than this will be considered
638 * already defragged. Use 0 to take the kernel default
639 * Use 1 to say every single extent must be rewritten
640 */
641 __u32 extent_thresh;
642
643 /*
644 * which compression method to use if turning on compression
645 * for this defrag operation. If unspecified, zlib will be
646 * used. If compression level is also being specified, set the
647 * BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL flag and fill the compress
648 * member structure instead of the compress_type field.
649 */
650 union {
651 __u32 compress_type;
652 struct {
653 __u8 type;
654 __s8 level;
655 } compress;
656 };
657
658 /* spare for later */
659 __u32 unused[4];
660};
661
662
663#define BTRFS_SAME_DATA_DIFFERS 1
664/* For extent-same ioctl */
665struct btrfs_ioctl_same_extent_info {
666 __s64 fd; /* in - destination file */
667 __u64 logical_offset; /* in - start of extent in destination */
668 __u64 bytes_deduped; /* out - total # of bytes we were able
669 * to dedupe from this file */
670 /* status of this dedupe operation:
671 * 0 if dedup succeeds
672 * < 0 for error
673 * == BTRFS_SAME_DATA_DIFFERS if data differs
674 */
675 __s32 status; /* out - see above description */
676 __u32 reserved;
677};
678
679struct btrfs_ioctl_same_args {
680 __u64 logical_offset; /* in - start of extent in source */
681 __u64 length; /* in - length of extent */
682 __u16 dest_count; /* in - total elements in info array */
683 __u16 reserved1;
684 __u32 reserved2;
685 struct btrfs_ioctl_same_extent_info info[];
686};
687
688struct btrfs_ioctl_space_info {
689 __u64 flags;
690 __u64 total_bytes;
691 __u64 used_bytes;
692};
693
694struct btrfs_ioctl_space_args {
695 __u64 space_slots;
696 __u64 total_spaces;
697 struct btrfs_ioctl_space_info spaces[];
698};
699
700struct btrfs_data_container {
701 __u32 bytes_left; /* out -- bytes not needed to deliver output */
702 __u32 bytes_missing; /* out -- additional bytes needed for result */
703 __u32 elem_cnt; /* out */
704 __u32 elem_missed; /* out */
705 __u64 val[]; /* out */
706};
707
708struct btrfs_ioctl_ino_path_args {
709 __u64 inum; /* in */
710 __u64 size; /* in */
711 __u64 reserved[4];
712 /* struct btrfs_data_container *fspath; out */
713 __u64 fspath; /* out */
714};
715
716struct btrfs_ioctl_logical_ino_args {
717 __u64 logical; /* in */
718 __u64 size; /* in */
719 __u64 reserved[3]; /* must be 0 for now */
720 __u64 flags; /* in, v2 only */
721 /* struct btrfs_data_container *inodes; out */
722 __u64 inodes;
723};
724
725/*
726 * Return every ref to the extent, not just those containing logical block.
727 * Requires logical == extent bytenr.
728 */
729#define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0)
730
731enum btrfs_dev_stat_values {
732 /* disk I/O failure stats */
733 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
734 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
735 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
736
737 /* stats for indirect indications for I/O failures */
738 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
739 * contents is illegal: this is an
740 * indication that the block was damaged
741 * during read or write, or written to
742 * wrong location or read from wrong
743 * location */
744 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
745 * been written */
746
747 BTRFS_DEV_STAT_VALUES_MAX
748};
749
750/* Reset statistics after reading; needs SYS_ADMIN capability */
751#define BTRFS_DEV_STATS_RESET (1ULL << 0)
752
753struct btrfs_ioctl_get_dev_stats {
754 __u64 devid; /* in */
755 __u64 nr_items; /* in/out */
756 __u64 flags; /* in/out */
757
758 /* out values: */
759 __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
760
761 /*
762 * This pads the struct to 1032 bytes. It was originally meant to pad to
763 * 1024 bytes, but when adding the flags field, the padding calculation
764 * was not adjusted.
765 */
766 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];
767};
768
769#define BTRFS_QUOTA_CTL_ENABLE 1
770#define BTRFS_QUOTA_CTL_DISABLE 2
771#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
772#define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4
773struct btrfs_ioctl_quota_ctl_args {
774 __u64 cmd;
775 __u64 status;
776};
777
778struct btrfs_ioctl_quota_rescan_args {
779 __u64 flags;
780 __u64 progress;
781 __u64 reserved[6];
782};
783
784struct btrfs_ioctl_qgroup_assign_args {
785 __u64 assign;
786 __u64 src;
787 __u64 dst;
788};
789
790struct btrfs_ioctl_qgroup_create_args {
791 __u64 create;
792 __u64 qgroupid;
793};
794struct btrfs_ioctl_timespec {
795 __u64 sec;
796 __u32 nsec;
797};
798
799struct btrfs_ioctl_received_subvol_args {
800 char uuid[BTRFS_UUID_SIZE]; /* in */
801 __u64 stransid; /* in */
802 __u64 rtransid; /* out */
803 struct btrfs_ioctl_timespec stime; /* in */
804 struct btrfs_ioctl_timespec rtime; /* out */
805 __u64 flags; /* in */
806 __u64 reserved[16]; /* in */
807};
808
809/*
810 * Caller doesn't want file data in the send stream, even if the
811 * search of clone sources doesn't find an extent. UPDATE_EXTENT
812 * commands will be sent instead of WRITE commands.
813 */
814#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
815
816/*
817 * Do not add the leading stream header. Used when multiple snapshots
818 * are sent back to back.
819 */
820#define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
821
822/*
823 * Omit the command at the end of the stream that indicated the end
824 * of the stream. This option is used when multiple snapshots are
825 * sent back to back.
826 */
827#define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
828
829/*
830 * Read the protocol version in the structure
831 */
832#define BTRFS_SEND_FLAG_VERSION 0x8
833
834/*
835 * Send compressed data using the ENCODED_WRITE command instead of decompressing
836 * the data and sending it with the WRITE command. This requires protocol
837 * version >= 2.
838 */
839#define BTRFS_SEND_FLAG_COMPRESSED 0x10
840
841#define BTRFS_SEND_FLAG_MASK \
842 (BTRFS_SEND_FLAG_NO_FILE_DATA | \
843 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
844 BTRFS_SEND_FLAG_OMIT_END_CMD | \
845 BTRFS_SEND_FLAG_VERSION | \
846 BTRFS_SEND_FLAG_COMPRESSED)
847
848struct btrfs_ioctl_send_args {
849 __s64 send_fd; /* in */
850 __u64 clone_sources_count; /* in */
851 __u64 __user *clone_sources; /* in */
852 __u64 parent_root; /* in */
853 __u64 flags; /* in */
854 __u32 version; /* in */
855 __u8 reserved[28]; /* in */
856};
857
858/*
859 * Information about a fs tree root.
860 *
861 * All items are filled by the ioctl
862 */
863struct btrfs_ioctl_get_subvol_info_args {
864 /* Id of this subvolume */
865 __u64 treeid;
866
867 /* Name of this subvolume, used to get the real name at mount point */
868 char name[BTRFS_VOL_NAME_MAX + 1];
869
870 /*
871 * Id of the subvolume which contains this subvolume.
872 * Zero for top-level subvolume or a deleted subvolume.
873 */
874 __u64 parent_id;
875
876 /*
877 * Inode number of the directory which contains this subvolume.
878 * Zero for top-level subvolume or a deleted subvolume
879 */
880 __u64 dirid;
881
882 /* Latest transaction id of this subvolume */
883 __u64 generation;
884
885 /* Flags of this subvolume */
886 __u64 flags;
887
888 /* UUID of this subvolume */
889 __u8 uuid[BTRFS_UUID_SIZE];
890
891 /*
892 * UUID of the subvolume of which this subvolume is a snapshot.
893 * All zero for a non-snapshot subvolume.
894 */
895 __u8 parent_uuid[BTRFS_UUID_SIZE];
896
897 /*
898 * UUID of the subvolume from which this subvolume was received.
899 * All zero for non-received subvolume.
900 */
901 __u8 received_uuid[BTRFS_UUID_SIZE];
902
903 /* Transaction id indicating when change/create/send/receive happened */
904 __u64 ctransid;
905 __u64 otransid;
906 __u64 stransid;
907 __u64 rtransid;
908 /* Time corresponding to c/o/s/rtransid */
909 struct btrfs_ioctl_timespec ctime;
910 struct btrfs_ioctl_timespec otime;
911 struct btrfs_ioctl_timespec stime;
912 struct btrfs_ioctl_timespec rtime;
913
914 /* Must be zero */
915 __u64 reserved[8];
916};
917
918#define BTRFS_MAX_ROOTREF_BUFFER_NUM 255
919struct btrfs_ioctl_get_subvol_rootref_args {
920 /* in/out, minimum id of rootref's treeid to be searched */
921 __u64 min_treeid;
922
923 /* out */
924 struct {
925 __u64 treeid;
926 __u64 dirid;
927 } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM];
928
929 /* out, number of found items */
930 __u8 num_items;
931 __u8 align[7];
932};
933
934/*
935 * Data and metadata for an encoded read or write.
936 *
937 * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g.,
938 * compression). This can be used to read the compressed contents of a file or
939 * write pre-compressed data directly to a file.
940 *
941 * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially
942 * preadv/pwritev with additional metadata about how the data is encoded and the
943 * size of the unencoded data.
944 *
945 * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills
946 * the metadata fields, and returns the size of the encoded data. It reads one
947 * extent per call. It can also read data which is not encoded.
948 *
949 * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data
950 * from the iovecs, and returns the size of the encoded data. Note that the
951 * encoded data is not validated when it is written; if it is not valid (e.g.,
952 * it cannot be decompressed), then a subsequent read may return an error.
953 *
954 * Since the filesystem page cache contains decoded data, encoded I/O bypasses
955 * the page cache. Encoded I/O requires CAP_SYS_ADMIN.
956 */
957struct btrfs_ioctl_encoded_io_args {
958 /* Input parameters for both reads and writes. */
959
960 /*
961 * iovecs containing encoded data.
962 *
963 * For reads, if the size of the encoded data is larger than the sum of
964 * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with
965 * ENOBUFS.
966 *
967 * For writes, the size of the encoded data is the sum of iov[n].iov_len
968 * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may
969 * increase in the future). This must also be less than or equal to
970 * unencoded_len.
971 */
972 const struct iovec __user *iov;
973 /* Number of iovecs. */
974 unsigned long iovcnt;
975 /*
976 * Offset in file.
977 *
978 * For writes, must be aligned to the sector size of the filesystem.
979 */
980 __s64 offset;
981 /* Currently must be zero. */
982 __u64 flags;
983
984 /*
985 * For reads, the following members are output parameters that will
986 * contain the returned metadata for the encoded data.
987 * For writes, the following members must be set to the metadata for the
988 * encoded data.
989 */
990
991 /*
992 * Length of the data in the file.
993 *
994 * Must be less than or equal to unencoded_len - unencoded_offset. For
995 * writes, must be aligned to the sector size of the filesystem unless
996 * the data ends at or beyond the current end of the file.
997 */
998 __u64 len;
999 /*
1000 * Length of the unencoded (i.e., decrypted and decompressed) data.
1001 *
1002 * For writes, must be no more than 128 KiB (this limit may increase in
1003 * the future). If the unencoded data is actually longer than
1004 * unencoded_len, then it is truncated; if it is shorter, then it is
1005 * extended with zeroes.
1006 */
1007 __u64 unencoded_len;
1008 /*
1009 * Offset from the first byte of the unencoded data to the first byte of
1010 * logical data in the file.
1011 *
1012 * Must be less than unencoded_len.
1013 */
1014 __u64 unencoded_offset;
1015 /*
1016 * BTRFS_ENCODED_IO_COMPRESSION_* type.
1017 *
1018 * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE.
1019 */
1020 __u32 compression;
1021 /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */
1022 __u32 encryption;
1023 /*
1024 * Reserved for future expansion.
1025 *
1026 * For reads, always returned as zero. Users should check for non-zero
1027 * bytes. If there are any, then the kernel has a newer version of this
1028 * structure with additional information that the user definition is
1029 * missing.
1030 *
1031 * For writes, must be zeroed.
1032 */
1033 __u8 reserved[64];
1034};
1035
1036/* Data is not compressed. */
1037#define BTRFS_ENCODED_IO_COMPRESSION_NONE 0
1038/* Data is compressed as a single zlib stream. */
1039#define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1
1040/*
1041 * Data is compressed as a single zstd frame with the windowLog compression
1042 * parameter set to no more than 17.
1043 */
1044#define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2
1045/*
1046 * Data is compressed sector by sector (using the sector size indicated by the
1047 * name of the constant) with LZO1X and wrapped in the format documented in
1048 * fs/btrfs/lzo.c. For writes, the compression sector size must match the
1049 * filesystem sector size.
1050 */
1051#define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3
1052#define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4
1053#define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5
1054#define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6
1055#define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7
1056#define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8
1057
1058/* Data is not encrypted. */
1059#define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0
1060#define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1
1061
1062/*
1063 * Wait for subvolume cleaning process. This queries the kernel queue and it
1064 * can change between the calls.
1065 *
1066 * - FOR_ONE - specify the subvolid
1067 * - FOR_QUEUED - wait for all currently queued
1068 * - COUNT - count number of queued
1069 * - PEEK_FIRST - read which is the first in the queue (to be cleaned or being
1070 * cleaned already), or 0 if the queue is empty
1071 * - PEEK_LAST - read the last subvolid in the queue, or 0 if the queue is empty
1072 */
1073struct btrfs_ioctl_subvol_wait {
1074 __u64 subvolid;
1075 __u32 mode;
1076 __u32 count;
1077};
1078
1079#define BTRFS_SUBVOL_SYNC_WAIT_FOR_ONE (0)
1080#define BTRFS_SUBVOL_SYNC_WAIT_FOR_QUEUED (1)
1081#define BTRFS_SUBVOL_SYNC_COUNT (2)
1082#define BTRFS_SUBVOL_SYNC_PEEK_FIRST (3)
1083#define BTRFS_SUBVOL_SYNC_PEEK_LAST (4)
1084
1085/* Error codes as returned by the kernel */
1086enum btrfs_err_code {
1087 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1,
1088 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
1089 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
1090 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
1091 BTRFS_ERROR_DEV_TGT_REPLACE,
1092 BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
1093 BTRFS_ERROR_DEV_ONLY_WRITABLE,
1094 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS,
1095 BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET,
1096 BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET,
1097};
1098
1099#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
1100 struct btrfs_ioctl_vol_args)
1101#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
1102 struct btrfs_ioctl_vol_args)
1103#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
1104 struct btrfs_ioctl_vol_args)
1105#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
1106 struct btrfs_ioctl_vol_args)
1107#define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \
1108 struct btrfs_ioctl_vol_args)
1109/* trans start and trans end are dangerous, and only for
1110 * use by applications that know how to avoid the
1111 * resulting deadlocks
1112 */
1113#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
1114#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
1115#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
1116
1117#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
1118#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
1119 struct btrfs_ioctl_vol_args)
1120#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
1121 struct btrfs_ioctl_vol_args)
1122#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
1123 struct btrfs_ioctl_vol_args)
1124
1125#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
1126 struct btrfs_ioctl_clone_range_args)
1127
1128#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
1129 struct btrfs_ioctl_vol_args)
1130#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
1131 struct btrfs_ioctl_vol_args)
1132#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
1133 struct btrfs_ioctl_defrag_range_args)
1134#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
1135 struct btrfs_ioctl_search_args)
1136#define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
1137 struct btrfs_ioctl_search_args_v2)
1138#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
1139 struct btrfs_ioctl_ino_lookup_args)
1140#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
1141#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
1142 struct btrfs_ioctl_space_args)
1143#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
1144#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
1145#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
1146 struct btrfs_ioctl_vol_args_v2)
1147#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
1148 struct btrfs_ioctl_vol_args_v2)
1149#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
1150#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
1151#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
1152 struct btrfs_ioctl_scrub_args)
1153#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
1154#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
1155 struct btrfs_ioctl_scrub_args)
1156#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
1157 struct btrfs_ioctl_dev_info_args)
1158#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
1159 struct btrfs_ioctl_fs_info_args)
1160#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
1161 struct btrfs_ioctl_balance_args)
1162#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
1163#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
1164 struct btrfs_ioctl_balance_args)
1165#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
1166 struct btrfs_ioctl_ino_path_args)
1167#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
1168 struct btrfs_ioctl_logical_ino_args)
1169#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
1170 struct btrfs_ioctl_received_subvol_args)
1171#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
1172#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
1173 struct btrfs_ioctl_vol_args)
1174#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
1175 struct btrfs_ioctl_quota_ctl_args)
1176#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
1177 struct btrfs_ioctl_qgroup_assign_args)
1178#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
1179 struct btrfs_ioctl_qgroup_create_args)
1180#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
1181 struct btrfs_ioctl_qgroup_limit_args)
1182#define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
1183 struct btrfs_ioctl_quota_rescan_args)
1184#define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
1185 struct btrfs_ioctl_quota_rescan_args)
1186#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
1187#define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL
1188#define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL
1189#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
1190 struct btrfs_ioctl_get_dev_stats)
1191#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
1192 struct btrfs_ioctl_dev_replace_args)
1193#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
1194 struct btrfs_ioctl_same_args)
1195#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
1196 struct btrfs_ioctl_feature_flags)
1197#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
1198 struct btrfs_ioctl_feature_flags[2])
1199#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
1200 struct btrfs_ioctl_feature_flags[3])
1201#define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \
1202 struct btrfs_ioctl_vol_args_v2)
1203#define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \
1204 struct btrfs_ioctl_logical_ino_args)
1205#define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \
1206 struct btrfs_ioctl_get_subvol_info_args)
1207#define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \
1208 struct btrfs_ioctl_get_subvol_rootref_args)
1209#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \
1210 struct btrfs_ioctl_ino_lookup_user_args)
1211#define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \
1212 struct btrfs_ioctl_vol_args_v2)
1213#define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \
1214 struct btrfs_ioctl_encoded_io_args)
1215#define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \
1216 struct btrfs_ioctl_encoded_io_args)
1217#define BTRFS_IOC_SUBVOL_SYNC_WAIT _IOW(BTRFS_IOCTL_MAGIC, 65, \
1218 struct btrfs_ioctl_subvol_wait)
1219
1220#ifdef __cplusplus
1221}
1222#endif
1223
1224#endif /* _UAPI_LINUX_BTRFS_H */
Linux 6.x block layer and io_uring tree(s)