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