2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #ifndef _UAPI_LINUX_BTRFS_H
20 #define _UAPI_LINUX_BTRFS_H
21 #include <linux/types.h>
22 #include <linux/ioctl.h>
24 #define BTRFS_IOCTL_MAGIC 0x94
25 #define BTRFS_VOL_NAME_MAX 255
27 /* this should be 4k */
28 #define BTRFS_PATH_NAME_MAX 4087
29 struct btrfs_ioctl_vol_args {
31 char name[BTRFS_PATH_NAME_MAX + 1];
34 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
36 #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
37 #define BTRFS_SUBVOL_RDONLY (1ULL << 1)
38 #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
39 #define BTRFS_FSID_SIZE 16
40 #define BTRFS_UUID_SIZE 16
42 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
44 struct btrfs_qgroup_limit {
52 struct btrfs_qgroup_inherit {
56 __u64 num_excl_copies;
57 struct btrfs_qgroup_limit lim;
61 struct btrfs_ioctl_qgroup_limit_args {
63 struct btrfs_qgroup_limit lim;
66 #define BTRFS_SUBVOL_NAME_MAX 4039
67 struct btrfs_ioctl_vol_args_v2 {
74 struct btrfs_qgroup_inherit __user *qgroup_inherit;
78 char name[BTRFS_SUBVOL_NAME_MAX + 1];
82 * structure to report errors and progress to userspace, either as a
83 * result of a finished scrub, a canceled scrub or a progress inquiry
85 struct btrfs_scrub_progress {
86 __u64 data_extents_scrubbed; /* # of data extents scrubbed */
87 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
88 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
89 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
90 __u64 read_errors; /* # of read errors encountered (EIO) */
91 __u64 csum_errors; /* # of failed csum checks */
92 __u64 verify_errors; /* # of occurences, where the metadata
93 * of a tree block did not match the
94 * expected values, like generation or
96 __u64 no_csum; /* # of 4k data block for which no csum
97 * is present, probably the result of
98 * data written with nodatasum */
99 __u64 csum_discards; /* # of csum for which no data was found
100 * in the extent tree. */
101 __u64 super_errors; /* # of bad super blocks encountered */
102 __u64 malloc_errors; /* # of internal kmalloc errors. These
103 * will likely cause an incomplete
105 __u64 uncorrectable_errors; /* # of errors where either no intact
106 * copy was found or the writeback
108 __u64 corrected_errors; /* # of errors corrected */
109 __u64 last_physical; /* last physical address scrubbed. In
110 * case a scrub was aborted, this can
111 * be used to restart the scrub */
112 __u64 unverified_errors; /* # of occurences where a read for a
113 * full (64k) bio failed, but the re-
114 * check succeeded for each 4k piece.
115 * Intermittent error. */
118 #define BTRFS_SCRUB_READONLY 1
119 struct btrfs_ioctl_scrub_args {
120 __u64 devid; /* in */
121 __u64 start; /* in */
123 __u64 flags; /* in */
124 struct btrfs_scrub_progress progress; /* out */
126 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
129 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0
130 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
131 struct btrfs_ioctl_dev_replace_start_params {
132 __u64 srcdevid; /* in, if 0, use srcdev_name instead */
133 __u64 cont_reading_from_srcdev_mode; /* in, see #define
135 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
136 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
139 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0
140 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1
141 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
142 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
143 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
144 struct btrfs_ioctl_dev_replace_status_params {
145 __u64 replace_state; /* out, see #define above */
146 __u64 progress_1000; /* out, 0 <= x <= 1000 */
147 __u64 time_started; /* out, seconds since 1-Jan-1970 */
148 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */
149 __u64 num_write_errors; /* out */
150 __u64 num_uncorrectable_read_errors; /* out */
153 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0
154 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1
155 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2
156 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0
157 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1
158 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2
159 struct btrfs_ioctl_dev_replace_args {
161 __u64 result; /* out */
164 struct btrfs_ioctl_dev_replace_start_params start;
165 struct btrfs_ioctl_dev_replace_status_params status;
171 struct btrfs_ioctl_dev_info_args {
172 __u64 devid; /* in/out */
173 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
174 __u64 bytes_used; /* out */
175 __u64 total_bytes; /* out */
176 __u64 unused[379]; /* pad to 4k */
177 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
180 struct btrfs_ioctl_fs_info_args {
181 __u64 max_id; /* out */
182 __u64 num_devices; /* out */
183 __u8 fsid[BTRFS_FSID_SIZE]; /* out */
184 __u64 reserved[124]; /* pad to 1k */
187 struct btrfs_ioctl_feature_flags {
189 __u64 compat_ro_flags;
190 __u64 incompat_flags;
193 /* balance control ioctl modes */
194 #define BTRFS_BALANCE_CTL_PAUSE 1
195 #define BTRFS_BALANCE_CTL_CANCEL 2
198 * this is packed, because it should be exactly the same as its disk
199 * byte order counterpart (struct btrfs_disk_balance_args)
201 struct btrfs_balance_args {
215 } __attribute__ ((__packed__));
217 /* report balance progress to userspace */
218 struct btrfs_balance_progress {
219 __u64 expected; /* estimated # of chunks that will be
220 * relocated to fulfill the request */
221 __u64 considered; /* # of chunks we have considered so far */
222 __u64 completed; /* # of chunks relocated so far */
225 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
226 #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
227 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
229 struct btrfs_ioctl_balance_args {
230 __u64 flags; /* in/out */
231 __u64 state; /* out */
233 struct btrfs_balance_args data; /* in/out */
234 struct btrfs_balance_args meta; /* in/out */
235 struct btrfs_balance_args sys; /* in/out */
237 struct btrfs_balance_progress stat; /* out */
239 __u64 unused[72]; /* pad to 1k */
242 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
243 struct btrfs_ioctl_ino_lookup_args {
246 char name[BTRFS_INO_LOOKUP_PATH_MAX];
249 struct btrfs_ioctl_search_key {
250 /* which root are we searching. 0 is the tree of tree roots */
253 /* keys returned will be >= min and <= max */
257 /* keys returned will be >= min and <= max */
261 /* max and min transids to search for */
265 /* keys returned will be >= min and <= max */
270 * how many items did userland ask for, and how many are we
275 /* align to 64 bits */
278 /* some extra for later */
285 struct btrfs_ioctl_search_header {
293 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
295 * the buf is an array of search headers where
296 * each header is followed by the actual item
297 * the type field is expanded to 32 bits for alignment
299 struct btrfs_ioctl_search_args {
300 struct btrfs_ioctl_search_key key;
301 char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
304 struct btrfs_ioctl_clone_range_args {
306 __u64 src_offset, src_length;
310 /* flags for the defrag range ioctl */
311 #define BTRFS_DEFRAG_RANGE_COMPRESS 1
312 #define BTRFS_DEFRAG_RANGE_START_IO 2
314 #define BTRFS_SAME_DATA_DIFFERS 1
315 /* For extent-same ioctl */
316 struct btrfs_ioctl_same_extent_info {
317 __s64 fd; /* in - destination file */
318 __u64 logical_offset; /* in - start of extent in destination */
319 __u64 bytes_deduped; /* out - total # of bytes we were able
320 * to dedupe from this file */
321 /* status of this dedupe operation:
322 * 0 if dedup succeeds
324 * == BTRFS_SAME_DATA_DIFFERS if data differs
326 __s32 status; /* out - see above description */
330 struct btrfs_ioctl_same_args {
331 __u64 logical_offset; /* in - start of extent in source */
332 __u64 length; /* in - length of extent */
333 __u16 dest_count; /* in - total elements in info array */
336 struct btrfs_ioctl_same_extent_info info[0];
339 struct btrfs_ioctl_space_info {
345 struct btrfs_ioctl_space_args {
348 struct btrfs_ioctl_space_info spaces[0];
351 struct btrfs_data_container {
352 __u32 bytes_left; /* out -- bytes not needed to deliver output */
353 __u32 bytes_missing; /* out -- additional bytes needed for result */
354 __u32 elem_cnt; /* out */
355 __u32 elem_missed; /* out */
356 __u64 val[0]; /* out */
359 struct btrfs_ioctl_ino_path_args {
363 /* struct btrfs_data_container *fspath; out */
364 __u64 fspath; /* out */
367 struct btrfs_ioctl_logical_ino_args {
368 __u64 logical; /* in */
371 /* struct btrfs_data_container *inodes; out */
375 enum btrfs_dev_stat_values {
376 /* disk I/O failure stats */
377 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
378 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
379 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
381 /* stats for indirect indications for I/O failures */
382 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
383 * contents is illegal: this is an
384 * indication that the block was damaged
385 * during read or write, or written to
386 * wrong location or read from wrong
388 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
391 BTRFS_DEV_STAT_VALUES_MAX
394 /* Reset statistics after reading; needs SYS_ADMIN capability */
395 #define BTRFS_DEV_STATS_RESET (1ULL << 0)
397 struct btrfs_ioctl_get_dev_stats {
398 __u64 devid; /* in */
399 __u64 nr_items; /* in/out */
400 __u64 flags; /* in/out */
403 __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
405 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
408 #define BTRFS_QUOTA_CTL_ENABLE 1
409 #define BTRFS_QUOTA_CTL_DISABLE 2
410 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
411 struct btrfs_ioctl_quota_ctl_args {
416 struct btrfs_ioctl_quota_rescan_args {
422 struct btrfs_ioctl_qgroup_assign_args {
428 struct btrfs_ioctl_qgroup_create_args {
432 struct btrfs_ioctl_timespec {
437 struct btrfs_ioctl_received_subvol_args {
438 char uuid[BTRFS_UUID_SIZE]; /* in */
439 __u64 stransid; /* in */
440 __u64 rtransid; /* out */
441 struct btrfs_ioctl_timespec stime; /* in */
442 struct btrfs_ioctl_timespec rtime; /* out */
443 __u64 flags; /* in */
444 __u64 reserved[16]; /* in */
448 * Caller doesn't want file data in the send stream, even if the
449 * search of clone sources doesn't find an extent. UPDATE_EXTENT
450 * commands will be sent instead of WRITE commands.
452 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
455 * Do not add the leading stream header. Used when multiple snapshots
456 * are sent back to back.
458 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
461 * Omit the command at the end of the stream that indicated the end
462 * of the stream. This option is used when multiple snapshots are
465 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
467 #define BTRFS_SEND_FLAG_MASK \
468 (BTRFS_SEND_FLAG_NO_FILE_DATA | \
469 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
470 BTRFS_SEND_FLAG_OMIT_END_CMD)
472 struct btrfs_ioctl_send_args {
473 __s64 send_fd; /* in */
474 __u64 clone_sources_count; /* in */
475 __u64 __user *clone_sources; /* in */
476 __u64 parent_root; /* in */
477 __u64 flags; /* in */
478 __u64 reserved[4]; /* in */
481 /* Error codes as returned by the kernel */
482 enum btrfs_err_code {
484 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
485 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
486 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
487 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
488 BTRFS_ERROR_DEV_TGT_REPLACE,
489 BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
490 BTRFS_ERROR_DEV_ONLY_WRITABLE,
491 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
493 /* An error code to error string mapping for the kernel
496 static inline char *btrfs_err_str(enum btrfs_err_code err_code)
499 case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET:
500 return "unable to go below two devices on raid1";
501 case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET:
502 return "unable to go below four devices on raid10";
503 case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET:
504 return "unable to go below two devices on raid5";
505 case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET:
506 return "unable to go below three devices on raid6";
507 case BTRFS_ERROR_DEV_TGT_REPLACE:
508 return "unable to remove the dev_replace target dev";
509 case BTRFS_ERROR_DEV_MISSING_NOT_FOUND:
510 return "no missing devices found to remove";
511 case BTRFS_ERROR_DEV_ONLY_WRITABLE:
512 return "unable to remove the only writeable device";
513 case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS:
514 return "add/delete/balance/replace/resize operation "\
521 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
522 struct btrfs_ioctl_vol_args)
523 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
524 struct btrfs_ioctl_vol_args)
525 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
526 struct btrfs_ioctl_vol_args)
527 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
528 struct btrfs_ioctl_vol_args)
529 /* trans start and trans end are dangerous, and only for
530 * use by applications that know how to avoid the
531 * resulting deadlocks
533 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
534 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
535 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
537 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
538 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
539 struct btrfs_ioctl_vol_args)
540 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
541 struct btrfs_ioctl_vol_args)
542 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
543 struct btrfs_ioctl_vol_args)
545 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
546 struct btrfs_ioctl_clone_range_args)
548 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
549 struct btrfs_ioctl_vol_args)
550 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
551 struct btrfs_ioctl_vol_args)
552 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
553 struct btrfs_ioctl_defrag_range_args)
554 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
555 struct btrfs_ioctl_search_args)
556 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
557 struct btrfs_ioctl_ino_lookup_args)
558 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
559 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
560 struct btrfs_ioctl_space_args)
561 #define BTRFS_IOC_GLOBAL_RSV _IOR(BTRFS_IOCTL_MAGIC, 20, __u64)
562 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
563 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
564 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
565 struct btrfs_ioctl_vol_args_v2)
566 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
567 struct btrfs_ioctl_vol_args_v2)
568 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
569 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
570 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
571 struct btrfs_ioctl_scrub_args)
572 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
573 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
574 struct btrfs_ioctl_scrub_args)
575 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
576 struct btrfs_ioctl_dev_info_args)
577 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
578 struct btrfs_ioctl_fs_info_args)
579 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
580 struct btrfs_ioctl_balance_args)
581 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
582 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
583 struct btrfs_ioctl_balance_args)
584 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
585 struct btrfs_ioctl_ino_path_args)
586 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
587 struct btrfs_ioctl_ino_path_args)
588 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
589 struct btrfs_ioctl_received_subvol_args)
590 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
591 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
592 struct btrfs_ioctl_vol_args)
593 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
594 struct btrfs_ioctl_quota_ctl_args)
595 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
596 struct btrfs_ioctl_qgroup_assign_args)
597 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
598 struct btrfs_ioctl_qgroup_create_args)
599 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
600 struct btrfs_ioctl_qgroup_limit_args)
601 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
602 struct btrfs_ioctl_quota_rescan_args)
603 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
604 struct btrfs_ioctl_quota_rescan_args)
605 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
606 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \
607 char[BTRFS_LABEL_SIZE])
608 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \
609 char[BTRFS_LABEL_SIZE])
610 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
611 struct btrfs_ioctl_get_dev_stats)
612 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
613 struct btrfs_ioctl_dev_replace_args)
614 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
615 struct btrfs_ioctl_same_args)
616 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
617 struct btrfs_ioctl_feature_flags)
618 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
619 struct btrfs_ioctl_feature_flags[2])
620 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
621 struct btrfs_ioctl_feature_flags[3])
623 #endif /* _UAPI_LINUX_BTRFS_H */