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