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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 _LINUX_BTRFS_H
21#define _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/* 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
78struct 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#define BTRFS_QGROUP_INHERIT_FLAGS_SUPP (BTRFS_QGROUP_INHERIT_SET_LIMITS)
94
95struct btrfs_qgroup_inherit {
96 __u64 flags;
97 __u64 num_qgroups;
98 __u64 num_ref_copies;
99 __u64 num_excl_copies;
100 struct btrfs_qgroup_limit lim;
101 __u64 qgroups[];
102};
103
104struct btrfs_ioctl_qgroup_limit_args {
105 __u64 qgroupid;
106 struct btrfs_qgroup_limit lim;
107};
108
109/*
110 * Arguments for specification of subvolumes or devices, supporting by-name or
111 * by-id and flags
112 *
113 * The set of supported flags depends on the ioctl
114 *
115 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls:
116 * - BTRFS_IOC_SUBVOL_GETFLAGS
117 * - BTRFS_IOC_SUBVOL_SETFLAGS
118 */
119
120/* Supported flags for BTRFS_IOC_RM_DEV_V2 */
121#define BTRFS_DEVICE_REMOVE_ARGS_MASK \
122 (BTRFS_DEVICE_SPEC_BY_ID)
123
124/* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */
125#define BTRFS_SUBVOL_CREATE_ARGS_MASK \
126 (BTRFS_SUBVOL_RDONLY | \
127 BTRFS_SUBVOL_QGROUP_INHERIT)
128
129/* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */
130#define BTRFS_SUBVOL_DELETE_ARGS_MASK \
131 (BTRFS_SUBVOL_SPEC_BY_ID)
132
133struct btrfs_ioctl_vol_args_v2 {
134 __s64 fd;
135 __u64 transid;
136 __u64 flags;
137 union {
138 struct {
139 __u64 size;
140 struct btrfs_qgroup_inherit *qgroup_inherit;
141 };
142 __u64 unused[4];
143 };
144 union {
145 char name[BTRFS_SUBVOL_NAME_MAX + 1];
146 __u64 devid;
147 __u64 subvolid;
148 };
149};
150
151/*
152 * structure to report errors and progress to userspace, either as a
153 * result of a finished scrub, a canceled scrub or a progress inquiry
154 */
155struct btrfs_scrub_progress {
156 __u64 data_extents_scrubbed; /* # of data extents scrubbed */
157 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
158 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
159 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
160 __u64 read_errors; /* # of read errors encountered (EIO) */
161 __u64 csum_errors; /* # of failed csum checks */
162 __u64 verify_errors; /* # of occurrences, where the metadata
163 * of a tree block did not match the
164 * expected values, like generation or
165 * logical */
166 __u64 no_csum; /* # of 4k data block for which no csum
167 * is present, probably the result of
168 * data written with nodatasum */
169 __u64 csum_discards; /* # of csum for which no data was found
170 * in the extent tree. */
171 __u64 super_errors; /* # of bad super blocks encountered */
172 __u64 malloc_errors; /* # of internal kmalloc errors. These
173 * will likely cause an incomplete
174 * scrub */
175 __u64 uncorrectable_errors; /* # of errors where either no intact
176 * copy was found or the writeback
177 * failed */
178 __u64 corrected_errors; /* # of errors corrected */
179 __u64 last_physical; /* last physical address scrubbed. In
180 * case a scrub was aborted, this can
181 * be used to restart the scrub */
182 __u64 unverified_errors; /* # of occurrences where a read for a
183 * full (64k) bio failed, but the re-
184 * check succeeded for each 4k piece.
185 * Intermittent error. */
186};
187
188#define BTRFS_SCRUB_READONLY 1
189#define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY)
190struct btrfs_ioctl_scrub_args {
191 __u64 devid; /* in */
192 __u64 start; /* in */
193 __u64 end; /* in */
194 __u64 flags; /* in */
195 struct btrfs_scrub_progress progress; /* out */
196 /* pad to 1k */
197 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
198};
199
200#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0
201#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
202struct btrfs_ioctl_dev_replace_start_params {
203 __u64 srcdevid; /* in, if 0, use srcdev_name instead */
204 __u64 cont_reading_from_srcdev_mode; /* in, see #define
205 * above */
206 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
207 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
208};
209
210#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0
211#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1
212#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
213#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
214#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
215struct btrfs_ioctl_dev_replace_status_params {
216 __u64 replace_state; /* out, see #define above */
217 __u64 progress_1000; /* out, 0 <= x <= 1000 */
218 __u64 time_started; /* out, seconds since 1-Jan-1970 */
219 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */
220 __u64 num_write_errors; /* out */
221 __u64 num_uncorrectable_read_errors; /* out */
222};
223
224#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0
225#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1
226#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2
227#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0
228#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1
229#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2
230#define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3
231struct btrfs_ioctl_dev_replace_args {
232 __u64 cmd; /* in */
233 __u64 result; /* out */
234
235 union {
236 struct btrfs_ioctl_dev_replace_start_params start;
237 struct btrfs_ioctl_dev_replace_status_params status;
238 }; /* in/out */
239
240 __u64 spare[64];
241};
242
243struct btrfs_ioctl_dev_info_args {
244 __u64 devid; /* in/out */
245 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
246 __u64 bytes_used; /* out */
247 __u64 total_bytes; /* out */
248 /*
249 * Optional, out.
250 *
251 * Showing the fsid of the device, allowing user space to check if this
252 * device is a seeding one.
253 *
254 * Introduced in v6.3, thus user space still needs to check if kernel
255 * changed this value. Older kernel will not touch the values here.
256 */
257 __u8 fsid[BTRFS_UUID_SIZE];
258 __u64 unused[377]; /* pad to 4k */
259 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
260};
261
262/*
263 * Retrieve information about the filesystem
264 */
265
266/* Request information about checksum type and size */
267#define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0)
268
269/* Request information about filesystem generation */
270#define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1)
271/* Request information about filesystem metadata UUID */
272#define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2)
273
274struct btrfs_ioctl_fs_info_args {
275 __u64 max_id; /* out */
276 __u64 num_devices; /* out */
277 __u8 fsid[BTRFS_FSID_SIZE]; /* out */
278 __u32 nodesize; /* out */
279 __u32 sectorsize; /* out */
280 __u32 clone_alignment; /* out */
281 /* See BTRFS_FS_INFO_FLAG_* */
282 __u16 csum_type; /* out */
283 __u16 csum_size; /* out */
284 __u64 flags; /* in/out */
285 __u64 generation; /* out */
286 __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */
287 __u8 reserved[944]; /* pad to 1k */
288};
289
290/*
291 * feature flags
292 *
293 * Used by:
294 * struct btrfs_ioctl_feature_flags
295 */
296#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0)
297/*
298 * Older kernels (< 4.9) on big-endian systems produced broken free space tree
299 * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions
300 * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted.
301 * btrfs-progs can also intentionally clear this bit to ask the kernel to
302 * rebuild the free space tree, however this might not work on older kernels
303 * that do not know about this bit. If not sure, clear the cache manually on
304 * first mount when booting older kernel versions.
305 */
306#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1)
307#define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2)
308
309/*
310 * Put all block group items into a dedicated block group tree, greatly
311 * reducing mount time for large filesystem due to better locality.
312 */
313#define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE (1ULL << 3)
314
315#define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0)
316#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1)
317#define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2)
318#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3)
319#define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4)
320
321/*
322 * older kernels tried to do bigger metadata blocks, but the
323 * code was pretty buggy. Lets not let them try anymore.
324 */
325#define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5)
326
327#define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6)
328#define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7)
329#define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8)
330#define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9)
331#define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10)
332#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)
333#define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12)
334#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13)
335#define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14)
336#define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA (1ULL << 16)
337
338struct btrfs_ioctl_feature_flags {
339 __u64 compat_flags;
340 __u64 compat_ro_flags;
341 __u64 incompat_flags;
342};
343
344/* balance control ioctl modes */
345#define BTRFS_BALANCE_CTL_PAUSE 1
346#define BTRFS_BALANCE_CTL_CANCEL 2
347
348/*
349 * this is packed, because it should be exactly the same as its disk
350 * byte order counterpart (struct btrfs_disk_balance_args)
351 */
352struct btrfs_balance_args {
353 __u64 profiles;
354
355 /*
356 * usage filter
357 * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N'
358 * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max
359 */
360 union {
361 __u64 usage;
362 struct {
363 __u32 usage_min;
364 __u32 usage_max;
365 };
366 };
367 __u64 devid;
368 __u64 pstart;
369 __u64 pend;
370 __u64 vstart;
371 __u64 vend;
372
373 __u64 target;
374
375 __u64 flags;
376
377 /*
378 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit'
379 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum
380 * and maximum
381 */
382 union {
383 __u64 limit; /* limit number of processed chunks */
384 struct {
385 __u32 limit_min;
386 __u32 limit_max;
387 };
388 };
389
390 /*
391 * Process chunks that cross stripes_min..stripes_max devices,
392 * BTRFS_BALANCE_ARGS_STRIPES_RANGE
393 */
394 __u32 stripes_min;
395 __u32 stripes_max;
396
397 __u64 unused[6];
398} __attribute__ ((__packed__));
399
400/* report balance progress to userspace */
401struct btrfs_balance_progress {
402 __u64 expected; /* estimated # of chunks that will be
403 * relocated to fulfill the request */
404 __u64 considered; /* # of chunks we have considered so far */
405 __u64 completed; /* # of chunks relocated so far */
406};
407
408/*
409 * flags definition for balance
410 *
411 * Restriper's general type filter
412 *
413 * Used by:
414 * btrfs_ioctl_balance_args.flags
415 * btrfs_balance_control.flags (internal)
416 */
417#define BTRFS_BALANCE_DATA (1ULL << 0)
418#define BTRFS_BALANCE_SYSTEM (1ULL << 1)
419#define BTRFS_BALANCE_METADATA (1ULL << 2)
420
421#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \
422 BTRFS_BALANCE_SYSTEM | \
423 BTRFS_BALANCE_METADATA)
424
425#define BTRFS_BALANCE_FORCE (1ULL << 3)
426#define BTRFS_BALANCE_RESUME (1ULL << 4)
427
428/*
429 * flags definitions for per-type balance args
430 *
431 * Balance filters
432 *
433 * Used by:
434 * struct btrfs_balance_args
435 */
436#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0)
437#define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1)
438#define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2)
439#define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3)
440#define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4)
441#define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5)
442#define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6)
443#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7)
444#define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10)
445
446#define BTRFS_BALANCE_ARGS_MASK \
447 (BTRFS_BALANCE_ARGS_PROFILES | \
448 BTRFS_BALANCE_ARGS_USAGE | \
449 BTRFS_BALANCE_ARGS_DEVID | \
450 BTRFS_BALANCE_ARGS_DRANGE | \
451 BTRFS_BALANCE_ARGS_VRANGE | \
452 BTRFS_BALANCE_ARGS_LIMIT | \
453 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \
454 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \
455 BTRFS_BALANCE_ARGS_USAGE_RANGE)
456
457/*
458 * Profile changing flags. When SOFT is set we won't relocate chunk if
459 * it already has the target profile (even though it may be
460 * half-filled).
461 */
462#define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8)
463#define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9)
464
465
466/*
467 * flags definition for balance state
468 *
469 * Used by:
470 * struct btrfs_ioctl_balance_args.state
471 */
472#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
473#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
474#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
475
476struct btrfs_ioctl_balance_args {
477 __u64 flags; /* in/out */
478 __u64 state; /* out */
479
480 struct btrfs_balance_args data; /* in/out */
481 struct btrfs_balance_args meta; /* in/out */
482 struct btrfs_balance_args sys; /* in/out */
483
484 struct btrfs_balance_progress stat; /* out */
485
486 __u64 unused[72]; /* pad to 1k */
487};
488
489#define BTRFS_INO_LOOKUP_PATH_MAX 4080
490struct btrfs_ioctl_ino_lookup_args {
491 __u64 treeid;
492 __u64 objectid;
493 char name[BTRFS_INO_LOOKUP_PATH_MAX];
494};
495
496#define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1)
497struct btrfs_ioctl_ino_lookup_user_args {
498 /* in, inode number containing the subvolume of 'subvolid' */
499 __u64 dirid;
500 /* in */
501 __u64 treeid;
502 /* out, name of the subvolume of 'treeid' */
503 char name[BTRFS_VOL_NAME_MAX + 1];
504 /*
505 * out, constructed path from the directory with which the ioctl is
506 * called to dirid
507 */
508 char path[BTRFS_INO_LOOKUP_USER_PATH_MAX];
509};
510
511/* Search criteria for the btrfs SEARCH ioctl family. */
512struct btrfs_ioctl_search_key {
513 /*
514 * The tree we're searching in. 1 is the tree of tree roots, 2 is the
515 * extent tree, etc...
516 *
517 * A special tree_id value of 0 will cause a search in the subvolume
518 * tree that the inode which is passed to the ioctl is part of.
519 */
520 __u64 tree_id; /* in */
521
522 /*
523 * When doing a tree search, we're actually taking a slice from a
524 * linear search space of 136-bit keys.
525 *
526 * A full 136-bit tree key is composed as:
527 * (objectid << 72) + (type << 64) + offset
528 *
529 * The individual min and max values for objectid, type and offset
530 * define the min_key and max_key values for the search range. All
531 * metadata items with a key in the interval [min_key, max_key] will be
532 * returned.
533 *
534 * Additionally, we can filter the items returned on transaction id of
535 * the metadata block they're stored in by specifying a transid range.
536 * Be aware that this transaction id only denotes when the metadata
537 * page that currently contains the item got written the last time as
538 * result of a COW operation. The number does not have any meaning
539 * related to the transaction in which an individual item that is being
540 * returned was created or changed.
541 */
542 __u64 min_objectid; /* in */
543 __u64 max_objectid; /* in */
544 __u64 min_offset; /* in */
545 __u64 max_offset; /* in */
546 __u64 min_transid; /* in */
547 __u64 max_transid; /* in */
548 __u32 min_type; /* in */
549 __u32 max_type; /* in */
550
551 /*
552 * input: The maximum amount of results desired.
553 * output: The actual amount of items returned, restricted by any of:
554 * - reaching the upper bound of the search range
555 * - reaching the input nr_items amount of items
556 * - completely filling the supplied memory buffer
557 */
558 __u32 nr_items; /* in/out */
559
560 /* align to 64 bits */
561 __u32 unused;
562
563 /* some extra for later */
564 __u64 unused1;
565 __u64 unused2;
566 __u64 unused3;
567 __u64 unused4;
568};
569
570struct btrfs_ioctl_search_header {
571 __u64 transid;
572 __u64 objectid;
573 __u64 offset;
574 __u32 type;
575 __u32 len;
576} __attribute__ ((__may_alias__));
577
578#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
579/*
580 * the buf is an array of search headers where
581 * each header is followed by the actual item
582 * the type field is expanded to 32 bits for alignment
583 */
584struct btrfs_ioctl_search_args {
585 struct btrfs_ioctl_search_key key;
586 char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
587};
588
589/*
590 * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes.
591 * The allocated size of the buffer is set in buf_size.
592 */
593struct btrfs_ioctl_search_args_v2 {
594 struct btrfs_ioctl_search_key key; /* in/out - search parameters */
595 __u64 buf_size; /* in - size of buffer
596 * out - on EOVERFLOW: needed size
597 * to store item */
598 __u64 buf[]; /* out - found items */
599};
600
601/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
602struct btrfs_ioctl_clone_range_args {
603 __s64 src_fd;
604 __u64 src_offset, src_length;
605 __u64 dest_offset;
606};
607
608/*
609 * flags definition for the defrag range ioctl
610 *
611 * Used by:
612 * struct btrfs_ioctl_defrag_range_args.flags
613 */
614#define BTRFS_DEFRAG_RANGE_COMPRESS 1
615#define BTRFS_DEFRAG_RANGE_START_IO 2
616#define BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL 4
617/* Request no compression on the range (uncompress if necessary). */
618#define BTRFS_DEFRAG_RANGE_NOCOMPRESS 8
619#define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \
620 BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL | \
621 BTRFS_DEFRAG_RANGE_NOCOMPRESS | \
622 BTRFS_DEFRAG_RANGE_START_IO)
623
624struct btrfs_ioctl_defrag_range_args {
625 /* start of the defrag operation */
626 __u64 start;
627
628 /* number of bytes to defrag, use (u64)-1 to say all */
629 __u64 len;
630
631 /*
632 * flags for the operation, which can include turning
633 * on compression for this one defrag
634 */
635 __u64 flags;
636
637 /*
638 * any extent bigger than this will be considered
639 * already defragged. Use 0 to take the kernel default
640 * Use 1 to say every single extent must be rewritten
641 */
642 __u32 extent_thresh;
643
644 /*
645 * which compression method to use if turning on compression
646 * for this defrag operation. If unspecified, zlib will be
647 * used. If compression level is also being specified, set the
648 * BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL flag and fill the compress
649 * member structure instead of the compress_type field.
650 */
651 union {
652 __u32 compress_type;
653 struct {
654 __u8 type;
655 __s8 level;
656 } compress;
657 };
658
659 /* spare for later */
660 __u32 unused[4];
661};
662
663
664#define BTRFS_SAME_DATA_DIFFERS 1
665/* For extent-same ioctl */
666struct btrfs_ioctl_same_extent_info {
667 __s64 fd; /* in - destination file */
668 __u64 logical_offset; /* in - start of extent in destination */
669 __u64 bytes_deduped; /* out - total # of bytes we were able
670 * to dedupe from this file */
671 /* status of this dedupe operation:
672 * 0 if dedup succeeds
673 * < 0 for error
674 * == BTRFS_SAME_DATA_DIFFERS if data differs
675 */
676 __s32 status; /* out - see above description */
677 __u32 reserved;
678};
679
680struct btrfs_ioctl_same_args {
681 __u64 logical_offset; /* in - start of extent in source */
682 __u64 length; /* in - length of extent */
683 __u16 dest_count; /* in - total elements in info array */
684 __u16 reserved1;
685 __u32 reserved2;
686 struct btrfs_ioctl_same_extent_info info[];
687};
688
689struct btrfs_ioctl_space_info {
690 __u64 flags;
691 __u64 total_bytes;
692 __u64 used_bytes;
693};
694
695struct btrfs_ioctl_space_args {
696 __u64 space_slots;
697 __u64 total_spaces;
698 struct btrfs_ioctl_space_info spaces[];
699};
700
701struct btrfs_data_container {
702 __u32 bytes_left; /* out -- bytes not needed to deliver output */
703 __u32 bytes_missing; /* out -- additional bytes needed for result */
704 __u32 elem_cnt; /* out */
705 __u32 elem_missed; /* out */
706 __u64 val[]; /* out */
707};
708
709struct btrfs_ioctl_ino_path_args {
710 __u64 inum; /* in */
711 __u64 size; /* in */
712 __u64 reserved[4];
713 /* struct btrfs_data_container *fspath; out */
714 __u64 fspath; /* out */
715};
716
717struct btrfs_ioctl_logical_ino_args {
718 __u64 logical; /* in */
719 __u64 size; /* in */
720 __u64 reserved[3]; /* must be 0 for now */
721 __u64 flags; /* in, v2 only */
722 /* struct btrfs_data_container *inodes; out */
723 __u64 inodes;
724};
725
726/*
727 * Return every ref to the extent, not just those containing logical block.
728 * Requires logical == extent bytenr.
729 */
730#define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0)
731
732enum btrfs_dev_stat_values {
733 /* disk I/O failure stats */
734 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
735 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
736 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
737
738 /* stats for indirect indications for I/O failures */
739 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
740 * contents is illegal: this is an
741 * indication that the block was damaged
742 * during read or write, or written to
743 * wrong location or read from wrong
744 * location */
745 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
746 * been written */
747
748 BTRFS_DEV_STAT_VALUES_MAX
749};
750
751/* Reset statistics after reading; needs SYS_ADMIN capability */
752#define BTRFS_DEV_STATS_RESET (1ULL << 0)
753
754struct btrfs_ioctl_get_dev_stats {
755 __u64 devid; /* in */
756 __u64 nr_items; /* in/out */
757 __u64 flags; /* in/out */
758
759 /* out values: */
760 __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
761
762 /*
763 * This pads the struct to 1032 bytes. It was originally meant to pad to
764 * 1024 bytes, but when adding the flags field, the padding calculation
765 * was not adjusted.
766 */
767 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];
768};
769
770#define BTRFS_QUOTA_CTL_ENABLE 1
771#define BTRFS_QUOTA_CTL_DISABLE 2
772#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
773#define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4
774struct btrfs_ioctl_quota_ctl_args {
775 __u64 cmd;
776 __u64 status;
777};
778
779struct btrfs_ioctl_quota_rescan_args {
780 __u64 flags;
781 __u64 progress;
782 __u64 reserved[6];
783};
784
785struct btrfs_ioctl_qgroup_assign_args {
786 __u64 assign;
787 __u64 src;
788 __u64 dst;
789};
790
791struct btrfs_ioctl_qgroup_create_args {
792 __u64 create;
793 __u64 qgroupid;
794};
795struct btrfs_ioctl_timespec {
796 __u64 sec;
797 __u32 nsec;
798};
799
800struct btrfs_ioctl_received_subvol_args {
801 char uuid[BTRFS_UUID_SIZE]; /* in */
802 __u64 stransid; /* in */
803 __u64 rtransid; /* out */
804 struct btrfs_ioctl_timespec stime; /* in */
805 struct btrfs_ioctl_timespec rtime; /* out */
806 __u64 flags; /* in */
807 __u64 reserved[16]; /* in */
808};
809
810/*
811 * Caller doesn't want file data in the send stream, even if the
812 * search of clone sources doesn't find an extent. UPDATE_EXTENT
813 * commands will be sent instead of WRITE commands.
814 */
815#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
816
817/*
818 * Do not add the leading stream header. Used when multiple snapshots
819 * are sent back to back.
820 */
821#define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
822
823/*
824 * Omit the command at the end of the stream that indicated the end
825 * of the stream. This option is used when multiple snapshots are
826 * sent back to back.
827 */
828#define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
829
830/*
831 * Read the protocol version in the structure
832 */
833#define BTRFS_SEND_FLAG_VERSION 0x8
834
835/*
836 * Send compressed data using the ENCODED_WRITE command instead of decompressing
837 * the data and sending it with the WRITE command. This requires protocol
838 * version >= 2.
839 */
840#define BTRFS_SEND_FLAG_COMPRESSED 0x10
841
842#define BTRFS_SEND_FLAG_MASK \
843 (BTRFS_SEND_FLAG_NO_FILE_DATA | \
844 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
845 BTRFS_SEND_FLAG_OMIT_END_CMD | \
846 BTRFS_SEND_FLAG_VERSION | \
847 BTRFS_SEND_FLAG_COMPRESSED)
848
849struct btrfs_ioctl_send_args {
850 __s64 send_fd; /* in */
851 __u64 clone_sources_count; /* in */
852 __u64 *clone_sources; /* in */
853 __u64 parent_root; /* in */
854 __u64 flags; /* in */
855 __u32 version; /* in */
856 __u8 reserved[28]; /* in */
857};
858
859/*
860 * Information about a fs tree root.
861 *
862 * All items are filled by the ioctl
863 */
864struct btrfs_ioctl_get_subvol_info_args {
865 /* Id of this subvolume */
866 __u64 treeid;
867
868 /* Name of this subvolume, used to get the real name at mount point */
869 char name[BTRFS_VOL_NAME_MAX + 1];
870
871 /*
872 * Id of the subvolume which contains this subvolume.
873 * Zero for top-level subvolume or a deleted subvolume.
874 */
875 __u64 parent_id;
876
877 /*
878 * Inode number of the directory which contains this subvolume.
879 * Zero for top-level subvolume or a deleted subvolume
880 */
881 __u64 dirid;
882
883 /* Latest transaction id of this subvolume */
884 __u64 generation;
885
886 /* Flags of this subvolume */
887 __u64 flags;
888
889 /* UUID of this subvolume */
890 __u8 uuid[BTRFS_UUID_SIZE];
891
892 /*
893 * UUID of the subvolume of which this subvolume is a snapshot.
894 * All zero for a non-snapshot subvolume.
895 */
896 __u8 parent_uuid[BTRFS_UUID_SIZE];
897
898 /*
899 * UUID of the subvolume from which this subvolume was received.
900 * All zero for non-received subvolume.
901 */
902 __u8 received_uuid[BTRFS_UUID_SIZE];
903
904 /* Transaction id indicating when change/create/send/receive happened */
905 __u64 ctransid;
906 __u64 otransid;
907 __u64 stransid;
908 __u64 rtransid;
909 /* Time corresponding to c/o/s/rtransid */
910 struct btrfs_ioctl_timespec ctime;
911 struct btrfs_ioctl_timespec otime;
912 struct btrfs_ioctl_timespec stime;
913 struct btrfs_ioctl_timespec rtime;
914
915 /* Must be zero */
916 __u64 reserved[8];
917};
918
919#define BTRFS_MAX_ROOTREF_BUFFER_NUM 255
920struct btrfs_ioctl_get_subvol_rootref_args {
921 /* in/out, minimum id of rootref's treeid to be searched */
922 __u64 min_treeid;
923
924 /* out */
925 struct {
926 __u64 treeid;
927 __u64 dirid;
928 } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM];
929
930 /* out, number of found items */
931 __u8 num_items;
932 __u8 align[7];
933};
934
935/*
936 * Data and metadata for an encoded read or write.
937 *
938 * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g.,
939 * compression). This can be used to read the compressed contents of a file or
940 * write pre-compressed data directly to a file.
941 *
942 * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially
943 * preadv/pwritev with additional metadata about how the data is encoded and the
944 * size of the unencoded data.
945 *
946 * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills
947 * the metadata fields, and returns the size of the encoded data. It reads one
948 * extent per call. It can also read data which is not encoded.
949 *
950 * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data
951 * from the iovecs, and returns the size of the encoded data. Note that the
952 * encoded data is not validated when it is written; if it is not valid (e.g.,
953 * it cannot be decompressed), then a subsequent read may return an error.
954 *
955 * Since the filesystem page cache contains decoded data, encoded I/O bypasses
956 * the page cache. Encoded I/O requires CAP_SYS_ADMIN.
957 */
958struct btrfs_ioctl_encoded_io_args {
959 /* Input parameters for both reads and writes. */
960
961 /*
962 * iovecs containing encoded data.
963 *
964 * For reads, if the size of the encoded data is larger than the sum of
965 * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with
966 * ENOBUFS.
967 *
968 * For writes, the size of the encoded data is the sum of iov[n].iov_len
969 * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may
970 * increase in the future). This must also be less than or equal to
971 * unencoded_len.
972 */
973 const struct iovec *iov;
974 /* Number of iovecs. */
975 unsigned long iovcnt;
976 /*
977 * Offset in file.
978 *
979 * For writes, must be aligned to the sector size of the filesystem.
980 */
981 __s64 offset;
982 /* Currently must be zero. */
983 __u64 flags;
984
985 /*
986 * For reads, the following members are output parameters that will
987 * contain the returned metadata for the encoded data.
988 * For writes, the following members must be set to the metadata for the
989 * encoded data.
990 */
991
992 /*
993 * Length of the data in the file.
994 *
995 * Must be less than or equal to unencoded_len - unencoded_offset. For
996 * writes, must be aligned to the sector size of the filesystem unless
997 * the data ends at or beyond the current end of the file.
998 */
999 __u64 len;
1000 /*
1001 * Length of the unencoded (i.e., decrypted and decompressed) data.
1002 *
1003 * For writes, must be no more than 128 KiB (this limit may increase in
1004 * the future). If the unencoded data is actually longer than
1005 * unencoded_len, then it is truncated; if it is shorter, then it is
1006 * extended with zeroes.
1007 */
1008 __u64 unencoded_len;
1009 /*
1010 * Offset from the first byte of the unencoded data to the first byte of
1011 * logical data in the file.
1012 *
1013 * Must be less than unencoded_len.
1014 */
1015 __u64 unencoded_offset;
1016 /*
1017 * BTRFS_ENCODED_IO_COMPRESSION_* type.
1018 *
1019 * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE.
1020 */
1021 __u32 compression;
1022 /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */
1023 __u32 encryption;
1024 /*
1025 * Reserved for future expansion.
1026 *
1027 * For reads, always returned as zero. Users should check for non-zero
1028 * bytes. If there are any, then the kernel has a newer version of this
1029 * structure with additional information that the user definition is
1030 * missing.
1031 *
1032 * For writes, must be zeroed.
1033 */
1034 __u8 reserved[64];
1035};
1036
1037/* Data is not compressed. */
1038#define BTRFS_ENCODED_IO_COMPRESSION_NONE 0
1039/* Data is compressed as a single zlib stream. */
1040#define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1
1041/*
1042 * Data is compressed as a single zstd frame with the windowLog compression
1043 * parameter set to no more than 17.
1044 */
1045#define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2
1046/*
1047 * Data is compressed sector by sector (using the sector size indicated by the
1048 * name of the constant) with LZO1X and wrapped in the format documented in
1049 * fs/btrfs/lzo.c. For writes, the compression sector size must match the
1050 * filesystem sector size.
1051 */
1052#define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3
1053#define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4
1054#define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5
1055#define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6
1056#define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7
1057#define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8
1058
1059/* Data is not encrypted. */
1060#define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0
1061#define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1
1062
1063/*
1064 * Wait for subvolume cleaning process. This queries the kernel queue and it
1065 * can change between the calls.
1066 *
1067 * - FOR_ONE - specify the subvolid
1068 * - FOR_QUEUED - wait for all currently queued
1069 * - COUNT - count number of queued
1070 * - PEEK_FIRST - read which is the first in the queue (to be cleaned or being
1071 * cleaned already), or 0 if the queue is empty
1072 * - PEEK_LAST - read the last subvolid in the queue, or 0 if the queue is empty
1073 */
1074struct btrfs_ioctl_subvol_wait {
1075 __u64 subvolid;
1076 __u32 mode;
1077 __u32 count;
1078};
1079
1080#define BTRFS_SUBVOL_SYNC_WAIT_FOR_ONE (0)
1081#define BTRFS_SUBVOL_SYNC_WAIT_FOR_QUEUED (1)
1082#define BTRFS_SUBVOL_SYNC_COUNT (2)
1083#define BTRFS_SUBVOL_SYNC_PEEK_FIRST (3)
1084#define BTRFS_SUBVOL_SYNC_PEEK_LAST (4)
1085
1086/* Error codes as returned by the kernel */
1087enum btrfs_err_code {
1088 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1,
1089 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
1090 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
1091 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
1092 BTRFS_ERROR_DEV_TGT_REPLACE,
1093 BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
1094 BTRFS_ERROR_DEV_ONLY_WRITABLE,
1095 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS,
1096 BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET,
1097 BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET,
1098};
1099
1100#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
1101 struct btrfs_ioctl_vol_args)
1102#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
1103 struct btrfs_ioctl_vol_args)
1104#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
1105 struct btrfs_ioctl_vol_args)
1106#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
1107 struct btrfs_ioctl_vol_args)
1108#define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \
1109 struct btrfs_ioctl_vol_args)
1110/* trans start and trans end are dangerous, and only for
1111 * use by applications that know how to avoid the
1112 * resulting deadlocks
1113 */
1114#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
1115#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
1116#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
1117
1118#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
1119#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
1120 struct btrfs_ioctl_vol_args)
1121#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
1122 struct btrfs_ioctl_vol_args)
1123#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
1124 struct btrfs_ioctl_vol_args)
1125
1126#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
1127 struct btrfs_ioctl_clone_range_args)
1128
1129#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
1130 struct btrfs_ioctl_vol_args)
1131#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
1132 struct btrfs_ioctl_vol_args)
1133#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
1134 struct btrfs_ioctl_defrag_range_args)
1135#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
1136 struct btrfs_ioctl_search_args)
1137#define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
1138 struct btrfs_ioctl_search_args_v2)
1139#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
1140 struct btrfs_ioctl_ino_lookup_args)
1141#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
1142#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
1143 struct btrfs_ioctl_space_args)
1144#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
1145#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
1146#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
1147 struct btrfs_ioctl_vol_args_v2)
1148#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
1149 struct btrfs_ioctl_vol_args_v2)
1150#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
1151#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
1152#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
1153 struct btrfs_ioctl_scrub_args)
1154#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
1155#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
1156 struct btrfs_ioctl_scrub_args)
1157#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
1158 struct btrfs_ioctl_dev_info_args)
1159#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
1160 struct btrfs_ioctl_fs_info_args)
1161#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
1162 struct btrfs_ioctl_balance_args)
1163#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
1164#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
1165 struct btrfs_ioctl_balance_args)
1166#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
1167 struct btrfs_ioctl_ino_path_args)
1168#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
1169 struct btrfs_ioctl_logical_ino_args)
1170#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
1171 struct btrfs_ioctl_received_subvol_args)
1172#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
1173#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
1174 struct btrfs_ioctl_vol_args)
1175#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
1176 struct btrfs_ioctl_quota_ctl_args)
1177#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
1178 struct btrfs_ioctl_qgroup_assign_args)
1179#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
1180 struct btrfs_ioctl_qgroup_create_args)
1181#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
1182 struct btrfs_ioctl_qgroup_limit_args)
1183#define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
1184 struct btrfs_ioctl_quota_rescan_args)
1185#define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
1186 struct btrfs_ioctl_quota_rescan_args)
1187#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
1188#define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL
1189#define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL
1190#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
1191 struct btrfs_ioctl_get_dev_stats)
1192#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
1193 struct btrfs_ioctl_dev_replace_args)
1194#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
1195 struct btrfs_ioctl_same_args)
1196#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
1197 struct btrfs_ioctl_feature_flags)
1198#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
1199 struct btrfs_ioctl_feature_flags[2])
1200#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
1201 struct btrfs_ioctl_feature_flags[3])
1202#define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \
1203 struct btrfs_ioctl_vol_args_v2)
1204#define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \
1205 struct btrfs_ioctl_logical_ino_args)
1206#define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \
1207 struct btrfs_ioctl_get_subvol_info_args)
1208#define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \
1209 struct btrfs_ioctl_get_subvol_rootref_args)
1210#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \
1211 struct btrfs_ioctl_ino_lookup_user_args)
1212#define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \
1213 struct btrfs_ioctl_vol_args_v2)
1214#define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \
1215 struct btrfs_ioctl_encoded_io_args)
1216#define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \
1217 struct btrfs_ioctl_encoded_io_args)
1218#define BTRFS_IOC_SUBVOL_SYNC_WAIT _IOW(BTRFS_IOCTL_MAGIC, 65, \
1219 struct btrfs_ioctl_subvol_wait)
1220
1221#ifdef __cplusplus
1222}
1223#endif
1224
1225#endif /* _LINUX_BTRFS_H */