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 __BTRFS_IOCTL_H__
20 #define __BTRFS_IOCTL_H__
26 #include <asm/types.h>
27 #include <linux/ioctl.h>
33 /* We don't want to include entire kerncompat.h */
35 #define BUILD_ASSERT(x)
38 #define BTRFS_IOCTL_MAGIC 0x94
39 #define BTRFS_VOL_NAME_MAX 255
41 /* this should be 4k */
42 #define BTRFS_PATH_NAME_MAX 4087
43 struct btrfs_ioctl_vol_args {
45 char name[BTRFS_PATH_NAME_MAX + 1];
47 BUILD_ASSERT(sizeof(struct btrfs_ioctl_vol_args) == 4096);
49 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
51 #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
52 #define BTRFS_SUBVOL_RDONLY (1ULL << 1)
53 #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
54 #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3)
56 #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \
57 (BTRFS_SUBVOL_CREATE_ASYNC | \
58 BTRFS_SUBVOL_RDONLY | \
59 BTRFS_SUBVOL_QGROUP_INHERIT | \
60 BTRFS_DEVICE_SPEC_BY_ID)
62 #define BTRFS_FSID_SIZE 16
63 #define BTRFS_UUID_SIZE 16
65 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
67 struct btrfs_qgroup_limit {
74 BUILD_ASSERT(sizeof(struct btrfs_qgroup_limit) == 40);
76 struct btrfs_qgroup_inherit {
80 __u64 num_excl_copies;
81 struct btrfs_qgroup_limit lim;
84 BUILD_ASSERT(sizeof(struct btrfs_qgroup_inherit) == 72);
86 struct btrfs_ioctl_qgroup_limit_args {
88 struct btrfs_qgroup_limit lim;
90 BUILD_ASSERT(sizeof(struct btrfs_ioctl_qgroup_limit_args) == 48);
92 #define BTRFS_SUBVOL_NAME_MAX 4039
93 struct btrfs_ioctl_vol_args_v2 {
100 struct btrfs_qgroup_inherit __user *qgroup_inherit;
105 char name[BTRFS_SUBVOL_NAME_MAX + 1];
109 BUILD_ASSERT(sizeof(struct btrfs_ioctl_vol_args_v2) == 4096);
112 * structure to report errors and progress to userspace, either as a
113 * result of a finished scrub, a canceled scrub or a progress inquiry
115 struct btrfs_scrub_progress {
116 __u64 data_extents_scrubbed; /* # of data extents scrubbed */
117 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
118 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
119 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
120 __u64 read_errors; /* # of read errors encountered (EIO) */
121 __u64 csum_errors; /* # of failed csum checks */
122 __u64 verify_errors; /* # of occurrences, where the metadata
123 * of a tree block did not match the
124 * expected values, like generation or
126 __u64 no_csum; /* # of 4k data block for which no csum
127 * is present, probably the result of
128 * data written with nodatasum */
129 __u64 csum_discards; /* # of csum for which no data was found
130 * in the extent tree. */
131 __u64 super_errors; /* # of bad super blocks encountered */
132 __u64 malloc_errors; /* # of internal kmalloc errors. These
133 * will likely cause an incomplete
135 __u64 uncorrectable_errors; /* # of errors where either no intact
136 * copy was found or the writeback
138 __u64 corrected_errors; /* # of errors corrected */
139 __u64 last_physical; /* last physical address scrubbed. In
140 * case a scrub was aborted, this can
141 * be used to restart the scrub */
142 __u64 unverified_errors; /* # of occurrences where a read for a
143 * full (64k) bio failed, but the re-
144 * check succeeded for each 4k piece.
145 * Intermittent error. */
148 #define BTRFS_SCRUB_READONLY 1
149 struct btrfs_ioctl_scrub_args {
150 __u64 devid; /* in */
151 __u64 start; /* in */
153 __u64 flags; /* in */
154 struct btrfs_scrub_progress progress; /* out */
156 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
158 BUILD_ASSERT(sizeof(struct btrfs_ioctl_scrub_args) == 1024);
160 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0
161 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
162 struct btrfs_ioctl_dev_replace_start_params {
163 __u64 srcdevid; /* in, if 0, use srcdev_name instead */
164 __u64 cont_reading_from_srcdev_mode; /* in, see #define
166 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
167 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
169 BUILD_ASSERT(sizeof(struct btrfs_ioctl_dev_replace_start_params) == 2072);
171 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0
172 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1
173 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
174 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
175 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
176 struct btrfs_ioctl_dev_replace_status_params {
177 __u64 replace_state; /* out, see #define above */
178 __u64 progress_1000; /* out, 0 <= x <= 1000 */
179 __u64 time_started; /* out, seconds since 1-Jan-1970 */
180 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */
181 __u64 num_write_errors; /* out */
182 __u64 num_uncorrectable_read_errors; /* out */
184 BUILD_ASSERT(sizeof(struct btrfs_ioctl_dev_replace_status_params) == 48);
186 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0
187 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1
188 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2
189 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT -1
190 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0
191 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1
192 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2
193 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3
194 struct btrfs_ioctl_dev_replace_args {
196 __u64 result; /* out */
199 struct btrfs_ioctl_dev_replace_start_params start;
200 struct btrfs_ioctl_dev_replace_status_params status;
205 BUILD_ASSERT(sizeof(struct btrfs_ioctl_dev_replace_args) == 2600);
207 struct btrfs_ioctl_dev_info_args {
208 __u64 devid; /* in/out */
209 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
210 __u64 bytes_used; /* out */
211 __u64 total_bytes; /* out */
212 __u64 unused[379]; /* pad to 4k */
213 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
215 BUILD_ASSERT(sizeof(struct btrfs_ioctl_dev_info_args) == 4096);
217 struct btrfs_ioctl_fs_info_args {
218 __u64 max_id; /* out */
219 __u64 num_devices; /* out */
220 __u8 fsid[BTRFS_FSID_SIZE]; /* out */
221 __u32 nodesize; /* out */
222 __u32 sectorsize; /* out */
223 __u32 clone_alignment; /* out */
225 __u64 reserved[122]; /* pad to 1k */
227 BUILD_ASSERT(sizeof(struct btrfs_ioctl_fs_info_args) == 1024);
229 struct btrfs_ioctl_feature_flags {
231 __u64 compat_ro_flags;
232 __u64 incompat_flags;
234 BUILD_ASSERT(sizeof(struct btrfs_ioctl_feature_flags) == 24);
236 /* balance control ioctl modes */
237 #define BTRFS_BALANCE_CTL_PAUSE 1
238 #define BTRFS_BALANCE_CTL_CANCEL 2
239 #define BTRFS_BALANCE_CTL_RESUME 3
242 * this is packed, because it should be exactly the same as its disk
243 * byte order counterpart (struct btrfs_disk_balance_args)
245 struct btrfs_balance_args {
250 * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N'
251 * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max
272 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit'
273 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum
277 __u64 limit; /* limit number of processed chunks */
286 } __attribute__ ((__packed__));
288 /* report balance progress to userspace */
289 struct btrfs_balance_progress {
290 __u64 expected; /* estimated # of chunks that will be
291 * relocated to fulfil the request */
292 __u64 considered; /* # of chunks we have considered so far */
293 __u64 completed; /* # of chunks relocated so far */
296 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
297 #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
298 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
300 struct btrfs_ioctl_balance_args {
301 __u64 flags; /* in/out */
302 __u64 state; /* out */
304 struct btrfs_balance_args data; /* in/out */
305 struct btrfs_balance_args meta; /* in/out */
306 struct btrfs_balance_args sys; /* in/out */
308 struct btrfs_balance_progress stat; /* out */
310 __u64 unused[72]; /* pad to 1k */
312 BUILD_ASSERT(sizeof(struct btrfs_ioctl_balance_args) == 1024);
314 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
315 struct btrfs_ioctl_ino_lookup_args {
318 char name[BTRFS_INO_LOOKUP_PATH_MAX];
320 BUILD_ASSERT(sizeof(struct btrfs_ioctl_ino_lookup_args) == 4096);
322 struct btrfs_ioctl_search_key {
323 /* which root are we searching. 0 is the tree of tree roots */
326 /* keys returned will be >= min and <= max */
330 /* keys returned will be >= min and <= max */
334 /* max and min transids to search for */
338 /* keys returned will be >= min and <= max */
343 * how many items did userland ask for, and how many are we
348 /* align to 64 bits */
351 /* some extra for later */
358 struct btrfs_ioctl_search_header {
364 } __attribute__((may_alias));
366 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
368 * the buf is an array of search headers where
369 * each header is followed by the actual item
370 * the type field is expanded to 32 bits for alignment
372 struct btrfs_ioctl_search_args {
373 struct btrfs_ioctl_search_key key;
374 char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
378 * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes.
379 * The allocated size of the buffer is set in buf_size.
381 struct btrfs_ioctl_search_args_v2 {
382 struct btrfs_ioctl_search_key key; /* in/out - search parameters */
383 __u64 buf_size; /* in - size of buffer
384 * out - on EOVERFLOW: needed size
386 __u64 buf[0]; /* out - found items */
388 BUILD_ASSERT(sizeof(struct btrfs_ioctl_search_args_v2) == 112);
390 /* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
391 struct btrfs_ioctl_clone_range_args {
393 __u64 src_offset, src_length;
396 BUILD_ASSERT(sizeof(struct btrfs_ioctl_clone_range_args) == 32);
398 /* flags for the defrag range ioctl */
399 #define BTRFS_DEFRAG_RANGE_COMPRESS 1
400 #define BTRFS_DEFRAG_RANGE_START_IO 2
402 #define BTRFS_SAME_DATA_DIFFERS 1
403 /* For extent-same ioctl */
404 struct btrfs_ioctl_same_extent_info {
405 __s64 fd; /* in - destination file */
406 __u64 logical_offset; /* in - start of extent in destination */
407 __u64 bytes_deduped; /* out - total # of bytes we were able
408 * to dedupe from this file */
409 /* status of this dedupe operation:
410 * 0 if dedup succeeds
412 * == BTRFS_SAME_DATA_DIFFERS if data differs
414 __s32 status; /* out - see above description */
418 struct btrfs_ioctl_same_args {
419 __u64 logical_offset; /* in - start of extent in source */
420 __u64 length; /* in - length of extent */
421 __u16 dest_count; /* in - total elements in info array */
424 struct btrfs_ioctl_same_extent_info info[0];
426 BUILD_ASSERT(sizeof(struct btrfs_ioctl_same_args) == 24);
428 struct btrfs_ioctl_defrag_range_args {
429 /* start of the defrag operation */
432 /* number of bytes to defrag, use (u64)-1 to say all */
436 * flags for the operation, which can include turning
437 * on compression for this one defrag
442 * any extent bigger than this will be considered
443 * already defragged. Use 0 to take the kernel default
444 * Use 1 to say every single extent must be rewritten
449 * which compression method to use if turning on compression
450 * for this defrag operation. If unspecified, zlib will
455 /* spare for later */
458 BUILD_ASSERT(sizeof(struct btrfs_ioctl_defrag_range_args) == 48);
460 struct btrfs_ioctl_space_info {
466 struct btrfs_ioctl_space_args {
469 struct btrfs_ioctl_space_info spaces[0];
471 BUILD_ASSERT(sizeof(struct btrfs_ioctl_space_args) == 16);
473 struct btrfs_data_container {
474 __u32 bytes_left; /* out -- bytes not needed to deliver output */
475 __u32 bytes_missing; /* out -- additional bytes needed for result */
476 __u32 elem_cnt; /* out */
477 __u32 elem_missed; /* out */
478 __u64 val[0]; /* out */
481 struct btrfs_ioctl_ino_path_args {
485 /* struct btrfs_data_container *fspath; out */
486 __u64 fspath; /* out */
488 BUILD_ASSERT(sizeof(struct btrfs_ioctl_ino_path_args) == 56);
490 struct btrfs_ioctl_logical_ino_args {
491 __u64 logical; /* in */
494 /* struct btrfs_data_container *inodes; out */
498 enum btrfs_dev_stat_values {
499 /* disk I/O failure stats */
500 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
501 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
502 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
504 /* stats for indirect indications for I/O failures */
505 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
506 * contents is illegal: this is an
507 * indication that the block was damaged
508 * during read or write, or written to
509 * wrong location or read from wrong
511 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
514 BTRFS_DEV_STAT_VALUES_MAX
517 /* Reset statistics after reading; needs SYS_ADMIN capability */
518 #define BTRFS_DEV_STATS_RESET (1ULL << 0)
520 struct btrfs_ioctl_get_dev_stats {
521 __u64 devid; /* in */
522 __u64 nr_items; /* in/out */
523 __u64 flags; /* in/out */
526 __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
528 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k + 8B */
530 BUILD_ASSERT(sizeof(struct btrfs_ioctl_get_dev_stats) == 1032);
532 /* BTRFS_IOC_SNAP_CREATE is no longer used by the btrfs command */
533 #define BTRFS_QUOTA_CTL_ENABLE 1
534 #define BTRFS_QUOTA_CTL_DISABLE 2
535 /* 3 has formerly been reserved for BTRFS_QUOTA_CTL_RESCAN */
536 struct btrfs_ioctl_quota_ctl_args {
540 BUILD_ASSERT(sizeof(struct btrfs_ioctl_quota_ctl_args) == 16);
542 struct btrfs_ioctl_quota_rescan_args {
547 BUILD_ASSERT(sizeof(struct btrfs_ioctl_quota_rescan_args) == 64);
549 struct btrfs_ioctl_qgroup_assign_args {
555 struct btrfs_ioctl_qgroup_create_args {
559 BUILD_ASSERT(sizeof(struct btrfs_ioctl_qgroup_create_args) == 16);
561 struct btrfs_ioctl_timespec {
566 struct btrfs_ioctl_received_subvol_args {
567 char uuid[BTRFS_UUID_SIZE]; /* in */
568 __u64 stransid; /* in */
569 __u64 rtransid; /* out */
570 struct btrfs_ioctl_timespec stime; /* in */
571 struct btrfs_ioctl_timespec rtime; /* out */
572 __u64 flags; /* in */
573 __u64 reserved[16]; /* in */
575 BUILD_ASSERT(sizeof(struct btrfs_ioctl_received_subvol_args) == 200);
578 * If we have a 32-bit userspace and 64-bit kernel, then the UAPI
579 * structures are incorrect, as the timespec structure from userspace
580 * is 4 bytes too small. We define these alternatives here for backward
581 * compatibility, the kernel understands both values.
585 * Structure size is different on 32bit and 64bit, has some padding if the
586 * structure is embedded. Packing makes sure the size is same on both, but will
587 * be misaligned on 64bit.
589 * NOTE: do not use in your code, this is for testing only
591 struct btrfs_ioctl_timespec_32 {
594 } __attribute__ ((__packed__));
596 struct btrfs_ioctl_received_subvol_args_32 {
597 char uuid[BTRFS_UUID_SIZE]; /* in */
598 __u64 stransid; /* in */
599 __u64 rtransid; /* out */
600 struct btrfs_ioctl_timespec_32 stime; /* in */
601 struct btrfs_ioctl_timespec_32 rtime; /* out */
602 __u64 flags; /* in */
603 __u64 reserved[16]; /* in */
604 } __attribute__ ((__packed__));
605 BUILD_ASSERT(sizeof(struct btrfs_ioctl_received_subvol_args_32) == 192);
607 #define BTRFS_IOC_SET_RECEIVED_SUBVOL_32_COMPAT_DEFINED 1
610 * Caller doesn't want file data in the send stream, even if the
611 * search of clone sources doesn't find an extent. UPDATE_EXTENT
612 * commands will be sent instead of WRITE commands.
614 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
617 * Do not add the leading stream header. Used when multiple snapshots
618 * are sent back to back.
620 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
623 * Omit the command at the end of the stream that indicated the end
624 * of the stream. This option is used when multiple snapshots are
627 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
629 #define BTRFS_SEND_FLAG_MASK \
630 (BTRFS_SEND_FLAG_NO_FILE_DATA | \
631 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
632 BTRFS_SEND_FLAG_OMIT_END_CMD)
634 struct btrfs_ioctl_send_args {
635 __s64 send_fd; /* in */
636 __u64 clone_sources_count; /* in */
637 __u64 __user *clone_sources; /* in */
638 __u64 parent_root; /* in */
639 __u64 flags; /* in */
640 __u64 reserved[4]; /* in */
643 * Size of structure depends on pointer width, was not caught in the early
644 * days. Kernel handles pointer width differences transparently.
646 BUILD_ASSERT(sizeof(__u64 *) == 8
647 ? sizeof(struct btrfs_ioctl_send_args) == 72
648 : (sizeof(void *) == 4
649 ? sizeof(struct btrfs_ioctl_send_args) == 68
653 * Different pointer width leads to structure size change. Kernel should accept
654 * both ioctl values (derived from the structures) for backward compatibility.
655 * Size of this structure is same on 32bit and 64bit though.
657 * NOTE: do not use in your code, this is for testing only
659 struct btrfs_ioctl_send_args_64 {
660 __s64 send_fd; /* in */
661 __u64 clone_sources_count; /* in */
663 __u64 __user *clone_sources; /* in */
664 __u64 __clone_sources_alignment;
666 __u64 parent_root; /* in */
667 __u64 flags; /* in */
668 __u64 reserved[4]; /* in */
669 } __attribute__((packed));
670 BUILD_ASSERT(sizeof(struct btrfs_ioctl_send_args_64) == 72);
672 #define BTRFS_IOC_SEND_64_COMPAT_DEFINED 1
674 /* Error codes as returned by the kernel */
675 enum btrfs_err_code {
677 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
678 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
679 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
680 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
681 BTRFS_ERROR_DEV_TGT_REPLACE,
682 BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
683 BTRFS_ERROR_DEV_ONLY_WRITABLE,
684 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
687 /* An error code to error string mapping for the kernel
690 static inline char *btrfs_err_str(enum btrfs_err_code err_code)
693 case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET:
694 return "unable to go below two devices on raid1";
695 case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET:
696 return "unable to go below four devices on raid10";
697 case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET:
698 return "unable to go below two devices on raid5";
699 case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET:
700 return "unable to go below three devices on raid6";
701 case BTRFS_ERROR_DEV_TGT_REPLACE:
702 return "unable to remove the dev_replace target dev";
703 case BTRFS_ERROR_DEV_MISSING_NOT_FOUND:
704 return "no missing devices found to remove";
705 case BTRFS_ERROR_DEV_ONLY_WRITABLE:
706 return "unable to remove the only writeable device";
707 case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS:
708 return "add/delete/balance/replace/resize operation "
715 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
716 struct btrfs_ioctl_vol_args)
717 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
718 struct btrfs_ioctl_vol_args)
719 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
720 struct btrfs_ioctl_vol_args)
721 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
722 struct btrfs_ioctl_vol_args)
723 /* trans start and trans end are dangerous, and only for
724 * use by applications that know how to avoid the
725 * resulting deadlocks
727 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
728 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
729 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
731 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
732 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
733 struct btrfs_ioctl_vol_args)
734 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
735 struct btrfs_ioctl_vol_args)
736 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
737 struct btrfs_ioctl_vol_args)
739 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
740 struct btrfs_ioctl_clone_range_args)
742 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
743 struct btrfs_ioctl_vol_args)
744 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
745 struct btrfs_ioctl_vol_args)
746 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
747 struct btrfs_ioctl_defrag_range_args)
748 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
749 struct btrfs_ioctl_search_args)
750 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
751 struct btrfs_ioctl_search_args_v2)
752 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
753 struct btrfs_ioctl_ino_lookup_args)
754 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
755 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
756 struct btrfs_ioctl_space_args)
757 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
758 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
759 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
760 struct btrfs_ioctl_vol_args_v2)
761 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
762 struct btrfs_ioctl_vol_args_v2)
763 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
764 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
765 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
766 struct btrfs_ioctl_scrub_args)
767 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
768 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
769 struct btrfs_ioctl_scrub_args)
770 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
771 struct btrfs_ioctl_dev_info_args)
772 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
773 struct btrfs_ioctl_fs_info_args)
774 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
775 struct btrfs_ioctl_balance_args)
776 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
777 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
778 struct btrfs_ioctl_balance_args)
779 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
780 struct btrfs_ioctl_ino_path_args)
781 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
782 struct btrfs_ioctl_logical_ino_args)
783 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
784 struct btrfs_ioctl_received_subvol_args)
786 #ifdef BTRFS_IOC_SET_RECEIVED_SUBVOL_32_COMPAT_DEFINED
787 #define BTRFS_IOC_SET_RECEIVED_SUBVOL_32 _IOWR(BTRFS_IOCTL_MAGIC, 37, \
788 struct btrfs_ioctl_received_subvol_args_32)
791 #ifdef BTRFS_IOC_SEND_64_COMPAT_DEFINED
792 #define BTRFS_IOC_SEND_64 _IOW(BTRFS_IOCTL_MAGIC, 38, \
793 struct btrfs_ioctl_send_args_64)
796 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
797 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
798 struct btrfs_ioctl_vol_args)
799 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
800 struct btrfs_ioctl_quota_ctl_args)
801 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
802 struct btrfs_ioctl_qgroup_assign_args)
803 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
804 struct btrfs_ioctl_qgroup_create_args)
805 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
806 struct btrfs_ioctl_qgroup_limit_args)
807 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
808 struct btrfs_ioctl_quota_rescan_args)
809 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
810 struct btrfs_ioctl_quota_rescan_args)
811 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
812 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \
813 char[BTRFS_LABEL_SIZE])
814 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \
815 char[BTRFS_LABEL_SIZE])
816 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
817 struct btrfs_ioctl_get_dev_stats)
818 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
819 struct btrfs_ioctl_dev_replace_args)
820 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
821 struct btrfs_ioctl_same_args)
822 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
823 struct btrfs_ioctl_feature_flags)
824 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
825 struct btrfs_ioctl_feature_flags[2])
826 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
827 struct btrfs_ioctl_feature_flags[3])
828 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \
829 struct btrfs_ioctl_vol_args_v2)