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btrfs.h
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linux-6.19.14/include/uapi/linux/btrfs.h
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 24extern "C" { 25#endif 26 27#include <linux/types.h> 28#include <linux/ioctl.h> 29#include <linux/fs.h> 30 31#define BTRFS_IOCTL_MAGIC 0x94 32#define BTRFS_VOL_NAME_MAX 255 33#define BTRFS_LABEL_SIZE 256 34 35/* this should be 4k */ 36#define BTRFS_PATH_NAME_MAX 4087 37struct btrfs_ioctl_vol_args { 38 __s64 fd; 39 char name[BTRFS_PATH_NAME_MAX + 1]; 40}; 41 42#define BTRFS_DEVICE_PATH_NAME_MAX 1024 43#define BTRFS_SUBVOL_NAME_MAX 4039 44 45#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 80struct 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#define BTRFS_QGROUP_INHERIT_FLAGS_SUPP (BTRFS_QGROUP_INHERIT_SET_LIMITS) 96 97struct btrfs_qgroup_inherit { 98 __u64 flags; 99 __u64 num_qgroups; 100 __u64 num_ref_copies; 101 __u64 num_excl_copies; 102 struct btrfs_qgroup_limit lim; 103 __u64 qgroups[]; 104}; 105 106struct btrfs_ioctl_qgroup_limit_args { 107 __u64 qgroupid; 108 struct btrfs_qgroup_limit lim; 109}; 110 111/* 112 * Arguments for specification of subvolumes or devices, supporting by-name or 113 * by-id and flags 114 * 115 * The set of supported flags depends on the ioctl 116 * 117 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: 118 * - BTRFS_IOC_SUBVOL_GETFLAGS 119 * - BTRFS_IOC_SUBVOL_SETFLAGS 120 */ 121 122/* Supported flags for BTRFS_IOC_RM_DEV_V2 */ 123#define BTRFS_DEVICE_REMOVE_ARGS_MASK \ 124 (BTRFS_DEVICE_SPEC_BY_ID) 125 126/* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */ 127#define BTRFS_SUBVOL_CREATE_ARGS_MASK \ 128 (BTRFS_SUBVOL_RDONLY | \ 129 BTRFS_SUBVOL_QGROUP_INHERIT) 130 131/* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */ 132#define BTRFS_SUBVOL_DELETE_ARGS_MASK \ 133 (BTRFS_SUBVOL_SPEC_BY_ID) 134 135struct btrfs_ioctl_vol_args_v2 { 136 __s64 fd; 137 __u64 transid; 138 __u64 flags; 139 union { 140 struct { 141 __u64 size; 142 struct btrfs_qgroup_inherit __user *qgroup_inherit; 143 }; 144 __u64 unused[4]; 145 }; 146 union { 147 char name[BTRFS_SUBVOL_NAME_MAX + 1]; 148 __u64 devid; 149 __u64 subvolid; 150 }; 151}; 152 153/* 154 * structure to report errors and progress to userspace, either as a 155 * result of a finished scrub, a canceled scrub or a progress inquiry 156 */ 157struct btrfs_scrub_progress { 158 __u64 data_extents_scrubbed; /* # of data extents scrubbed */ 159 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ 160 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ 161 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ 162 __u64 read_errors; /* # of read errors encountered (EIO) */ 163 __u64 csum_errors; /* # of failed csum checks */ 164 __u64 verify_errors; /* # of occurrences, where the metadata 165 * of a tree block did not match the 166 * expected values, like generation or 167 * logical */ 168 __u64 no_csum; /* # of 4k data block for which no csum 169 * is present, probably the result of 170 * data written with nodatasum */ 171 __u64 csum_discards; /* # of csum for which no data was found 172 * in the extent tree. */ 173 __u64 super_errors; /* # of bad super blocks encountered */ 174 __u64 malloc_errors; /* # of internal kmalloc errors. These 175 * will likely cause an incomplete 176 * scrub */ 177 __u64 uncorrectable_errors; /* # of errors where either no intact 178 * copy was found or the writeback 179 * failed */ 180 __u64 corrected_errors; /* # of errors corrected */ 181 __u64 last_physical; /* last physical address scrubbed. In 182 * case a scrub was aborted, this can 183 * be used to restart the scrub */ 184 __u64 unverified_errors; /* # of occurrences where a read for a 185 * full (64k) bio failed, but the re- 186 * check succeeded for each 4k piece. 187 * Intermittent error. */ 188}; 189 190#define BTRFS_SCRUB_READONLY 1 191#define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY) 192struct btrfs_ioctl_scrub_args { 193 __u64 devid; /* in */ 194 __u64 start; /* in */ 195 __u64 end; /* in */ 196 __u64 flags; /* in */ 197 struct btrfs_scrub_progress progress; /* out */ 198 /* pad to 1k */ 199 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; 200}; 201 202#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 203#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 204struct btrfs_ioctl_dev_replace_start_params { 205 __u64 srcdevid; /* in, if 0, use srcdev_name instead */ 206 __u64 cont_reading_from_srcdev_mode; /* in, see #define 207 * above */ 208 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 209 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 210}; 211 212#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 213#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 214#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 215#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 216#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 217struct btrfs_ioctl_dev_replace_status_params { 218 __u64 replace_state; /* out, see #define above */ 219 __u64 progress_1000; /* out, 0 <= x <= 1000 */ 220 __u64 time_started; /* out, seconds since 1-Jan-1970 */ 221 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ 222 __u64 num_write_errors; /* out */ 223 __u64 num_uncorrectable_read_errors; /* out */ 224}; 225 226#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 227#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 228#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 229#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 230#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 231#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 232#define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 233struct btrfs_ioctl_dev_replace_args { 234 __u64 cmd; /* in */ 235 __u64 result; /* out */ 236 237 union { 238 struct btrfs_ioctl_dev_replace_start_params start; 239 struct btrfs_ioctl_dev_replace_status_params status; 240 }; /* in/out */ 241 242 __u64 spare[64]; 243}; 244 245struct btrfs_ioctl_dev_info_args { 246 __u64 devid; /* in/out */ 247 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ 248 __u64 bytes_used; /* out */ 249 __u64 total_bytes; /* out */ 250 /* 251 * Optional, out. 252 * 253 * Showing the fsid of the device, allowing user space to check if this 254 * device is a seeding one. 255 * 256 * Introduced in v6.3, thus user space still needs to check if kernel 257 * changed this value. Older kernel will not touch the values here. 258 */ 259 __u8 fsid[BTRFS_UUID_SIZE]; 260 __u64 unused[377]; /* pad to 4k */ 261 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ 262}; 263 264/* 265 * Retrieve information about the filesystem 266 */ 267 268/* Request information about checksum type and size */ 269#define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0) 270 271/* Request information about filesystem generation */ 272#define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1) 273/* Request information about filesystem metadata UUID */ 274#define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2) 275 276struct btrfs_ioctl_fs_info_args { 277 __u64 max_id; /* out */ 278 __u64 num_devices; /* out */ 279 __u8 fsid[BTRFS_FSID_SIZE]; /* out */ 280 __u32 nodesize; /* out */ 281 __u32 sectorsize; /* out */ 282 __u32 clone_alignment; /* out */ 283 /* See BTRFS_FS_INFO_FLAG_* */ 284 __u16 csum_type; /* out */ 285 __u16 csum_size; /* out */ 286 __u64 flags; /* in/out */ 287 __u64 generation; /* out */ 288 __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */ 289 __u8 reserved[944]; /* pad to 1k */ 290}; 291 292/* 293 * feature flags 294 * 295 * Used by: 296 * struct btrfs_ioctl_feature_flags 297 */ 298#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) 299/* 300 * Older kernels (< 4.9) on big-endian systems produced broken free space tree 301 * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions 302 * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted. 303 * btrfs-progs can also intentionally clear this bit to ask the kernel to 304 * rebuild the free space tree, however this might not work on older kernels 305 * that do not know about this bit. If not sure, clear the cache manually on 306 * first mount when booting older kernel versions. 307 */ 308#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1) 309#define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2) 310 311/* 312 * Put all block group items into a dedicated block group tree, greatly 313 * reducing mount time for large filesystem due to better locality. 314 */ 315#define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE (1ULL << 3) 316 317#define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) 318#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) 319#define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) 320#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) 321#define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4) 322 323/* 324 * older kernels tried to do bigger metadata blocks, but the 325 * code was pretty buggy. Lets not let them try anymore. 326 */ 327#define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) 328 329#define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) 330#define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) 331#define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) 332#define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) 333#define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10) 334#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11) 335#define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12) 336#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13) 337#define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14) 338#define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA (1ULL << 16) 339 340struct btrfs_ioctl_feature_flags { 341 __u64 compat_flags; 342 __u64 compat_ro_flags; 343 __u64 incompat_flags; 344}; 345 346/* balance control ioctl modes */ 347#define BTRFS_BALANCE_CTL_PAUSE 1 348#define BTRFS_BALANCE_CTL_CANCEL 2 349 350/* 351 * this is packed, because it should be exactly the same as its disk 352 * byte order counterpart (struct btrfs_disk_balance_args) 353 */ 354struct btrfs_balance_args { 355 __u64 profiles; 356 357 /* 358 * usage filter 359 * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N' 360 * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max 361 */ 362 union { 363 __u64 usage; 364 struct { 365 __u32 usage_min; 366 __u32 usage_max; 367 }; 368 }; 369 __u64 devid; 370 __u64 pstart; 371 __u64 pend; 372 __u64 vstart; 373 __u64 vend; 374 375 __u64 target; 376 377 __u64 flags; 378 379 /* 380 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' 381 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum 382 * and maximum 383 */ 384 union { 385 __u64 limit; /* limit number of processed chunks */ 386 struct { 387 __u32 limit_min; 388 __u32 limit_max; 389 }; 390 }; 391 392 /* 393 * Process chunks that cross stripes_min..stripes_max devices, 394 * BTRFS_BALANCE_ARGS_STRIPES_RANGE 395 */ 396 __u32 stripes_min; 397 __u32 stripes_max; 398 399 __u64 unused[6]; 400} __attribute__ ((__packed__)); 401 402/* report balance progress to userspace */ 403struct btrfs_balance_progress { 404 __u64 expected; /* estimated # of chunks that will be 405 * relocated to fulfill the request */ 406 __u64 considered; /* # of chunks we have considered so far */ 407 __u64 completed; /* # of chunks relocated so far */ 408}; 409 410/* 411 * flags definition for balance 412 * 413 * Restriper's general type filter 414 * 415 * Used by: 416 * btrfs_ioctl_balance_args.flags 417 * btrfs_balance_control.flags (internal) 418 */ 419#define BTRFS_BALANCE_DATA (1ULL << 0) 420#define BTRFS_BALANCE_SYSTEM (1ULL << 1) 421#define BTRFS_BALANCE_METADATA (1ULL << 2) 422 423#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ 424 BTRFS_BALANCE_SYSTEM | \ 425 BTRFS_BALANCE_METADATA) 426 427#define BTRFS_BALANCE_FORCE (1ULL << 3) 428#define BTRFS_BALANCE_RESUME (1ULL << 4) 429 430/* 431 * flags definitions for per-type balance args 432 * 433 * Balance filters 434 * 435 * Used by: 436 * struct btrfs_balance_args 437 */ 438#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) 439#define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) 440#define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) 441#define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) 442#define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) 443#define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) 444#define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) 445#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) 446#define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) 447 448#define BTRFS_BALANCE_ARGS_MASK \ 449 (BTRFS_BALANCE_ARGS_PROFILES | \ 450 BTRFS_BALANCE_ARGS_USAGE | \ 451 BTRFS_BALANCE_ARGS_DEVID | \ 452 BTRFS_BALANCE_ARGS_DRANGE | \ 453 BTRFS_BALANCE_ARGS_VRANGE | \ 454 BTRFS_BALANCE_ARGS_LIMIT | \ 455 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ 456 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ 457 BTRFS_BALANCE_ARGS_USAGE_RANGE) 458 459/* 460 * Profile changing flags. When SOFT is set we won't relocate chunk if 461 * it already has the target profile (even though it may be 462 * half-filled). 463 */ 464#define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) 465#define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) 466 467 468/* 469 * flags definition for balance state 470 * 471 * Used by: 472 * struct btrfs_ioctl_balance_args.state 473 */ 474#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) 475#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) 476#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) 477 478struct btrfs_ioctl_balance_args { 479 __u64 flags; /* in/out */ 480 __u64 state; /* out */ 481 482 struct btrfs_balance_args data; /* in/out */ 483 struct btrfs_balance_args meta; /* in/out */ 484 struct btrfs_balance_args sys; /* in/out */ 485 486 struct btrfs_balance_progress stat; /* out */ 487 488 __u64 unused[72]; /* pad to 1k */ 489}; 490 491#define BTRFS_INO_LOOKUP_PATH_MAX 4080 492struct btrfs_ioctl_ino_lookup_args { 493 __u64 treeid; 494 __u64 objectid; 495 char name[BTRFS_INO_LOOKUP_PATH_MAX]; 496}; 497 498#define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1) 499struct btrfs_ioctl_ino_lookup_user_args { 500 /* in, inode number containing the subvolume of 'subvolid' */ 501 __u64 dirid; 502 /* in */ 503 __u64 treeid; 504 /* out, name of the subvolume of 'treeid' */ 505 char name[BTRFS_VOL_NAME_MAX + 1]; 506 /* 507 * out, constructed path from the directory with which the ioctl is 508 * called to dirid 509 */ 510 char path[BTRFS_INO_LOOKUP_USER_PATH_MAX]; 511}; 512 513/* Search criteria for the btrfs SEARCH ioctl family. */ 514struct btrfs_ioctl_search_key { 515 /* 516 * The tree we're searching in. 1 is the tree of tree roots, 2 is the 517 * extent tree, etc... 518 * 519 * A special tree_id value of 0 will cause a search in the subvolume 520 * tree that the inode which is passed to the ioctl is part of. 521 */ 522 __u64 tree_id; /* in */ 523 524 /* 525 * When doing a tree search, we're actually taking a slice from a 526 * linear search space of 136-bit keys. 527 * 528 * A full 136-bit tree key is composed as: 529 * (objectid << 72) + (type << 64) + offset 530 * 531 * The individual min and max values for objectid, type and offset 532 * define the min_key and max_key values for the search range. All 533 * metadata items with a key in the interval [min_key, max_key] will be 534 * returned. 535 * 536 * Additionally, we can filter the items returned on transaction id of 537 * the metadata block they're stored in by specifying a transid range. 538 * Be aware that this transaction id only denotes when the metadata 539 * page that currently contains the item got written the last time as 540 * result of a COW operation. The number does not have any meaning 541 * related to the transaction in which an individual item that is being 542 * returned was created or changed. 543 */ 544 __u64 min_objectid; /* in */ 545 __u64 max_objectid; /* in */ 546 __u64 min_offset; /* in */ 547 __u64 max_offset; /* in */ 548 __u64 min_transid; /* in */ 549 __u64 max_transid; /* in */ 550 __u32 min_type; /* in */ 551 __u32 max_type; /* in */ 552 553 /* 554 * input: The maximum amount of results desired. 555 * output: The actual amount of items returned, restricted by any of: 556 * - reaching the upper bound of the search range 557 * - reaching the input nr_items amount of items 558 * - completely filling the supplied memory buffer 559 */ 560 __u32 nr_items; /* in/out */ 561 562 /* align to 64 bits */ 563 __u32 unused; 564 565 /* some extra for later */ 566 __u64 unused1; 567 __u64 unused2; 568 __u64 unused3; 569 __u64 unused4; 570}; 571 572struct btrfs_ioctl_search_header { 573 __u64 transid; 574 __u64 objectid; 575 __u64 offset; 576 __u32 type; 577 __u32 len; 578} __attribute__ ((__may_alias__)); 579 580#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) 581/* 582 * the buf is an array of search headers where 583 * each header is followed by the actual item 584 * the type field is expanded to 32 bits for alignment 585 */ 586struct btrfs_ioctl_search_args { 587 struct btrfs_ioctl_search_key key; 588 char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; 589}; 590 591/* 592 * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes. 593 * The allocated size of the buffer is set in buf_size. 594 */ 595struct btrfs_ioctl_search_args_v2 { 596 struct btrfs_ioctl_search_key key; /* in/out - search parameters */ 597 __u64 buf_size; /* in - size of buffer 598 * out - on EOVERFLOW: needed size 599 * to store item */ 600 __u64 buf[]; /* out - found items */ 601}; 602 603/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */ 604struct btrfs_ioctl_clone_range_args { 605 __s64 src_fd; 606 __u64 src_offset, src_length; 607 __u64 dest_offset; 608}; 609 610/* 611 * flags definition for the defrag range ioctl 612 * 613 * Used by: 614 * struct btrfs_ioctl_defrag_range_args.flags 615 */ 616#define BTRFS_DEFRAG_RANGE_COMPRESS 1 617#define BTRFS_DEFRAG_RANGE_START_IO 2 618#define BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL 4 619/* Request no compression on the range (uncompress if necessary). */ 620#define BTRFS_DEFRAG_RANGE_NOCOMPRESS 8 621#define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \ 622 BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL | \ 623 BTRFS_DEFRAG_RANGE_NOCOMPRESS | \ 624 BTRFS_DEFRAG_RANGE_START_IO) 625 626struct btrfs_ioctl_defrag_range_args { 627 /* start of the defrag operation */ 628 __u64 start; 629 630 /* number of bytes to defrag, use (u64)-1 to say all */ 631 __u64 len; 632 633 /* 634 * flags for the operation, which can include turning 635 * on compression for this one defrag 636 */ 637 __u64 flags; 638 639 /* 640 * any extent bigger than this will be considered 641 * already defragged. Use 0 to take the kernel default 642 * Use 1 to say every single extent must be rewritten 643 */ 644 __u32 extent_thresh; 645 646 /* 647 * which compression method to use if turning on compression 648 * for this defrag operation. If unspecified, zlib will be 649 * used. If compression level is also being specified, set the 650 * BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL flag and fill the compress 651 * member structure instead of the compress_type field. 652 */ 653 union { 654 __u32 compress_type; 655 struct { 656 __u8 type; 657 __s8 level; 658 } compress; 659 }; 660 661 /* spare for later */ 662 __u32 unused[4]; 663}; 664 665 666#define BTRFS_SAME_DATA_DIFFERS 1 667/* For extent-same ioctl */ 668struct btrfs_ioctl_same_extent_info { 669 __s64 fd; /* in - destination file */ 670 __u64 logical_offset; /* in - start of extent in destination */ 671 __u64 bytes_deduped; /* out - total # of bytes we were able 672 * to dedupe from this file */ 673 /* status of this dedupe operation: 674 * 0 if dedup succeeds 675 * < 0 for error 676 * == BTRFS_SAME_DATA_DIFFERS if data differs 677 */ 678 __s32 status; /* out - see above description */ 679 __u32 reserved; 680}; 681 682struct btrfs_ioctl_same_args { 683 __u64 logical_offset; /* in - start of extent in source */ 684 __u64 length; /* in - length of extent */ 685 __u16 dest_count; /* in - total elements in info array */ 686 __u16 reserved1; 687 __u32 reserved2; 688 struct btrfs_ioctl_same_extent_info info[]; 689}; 690 691struct btrfs_ioctl_space_info { 692 __u64 flags; 693 __u64 total_bytes; 694 __u64 used_bytes; 695}; 696 697struct btrfs_ioctl_space_args { 698 __u64 space_slots; 699 __u64 total_spaces; 700 struct btrfs_ioctl_space_info spaces[]; 701}; 702 703struct btrfs_data_container { 704 __u32 bytes_left; /* out -- bytes not needed to deliver output */ 705 __u32 bytes_missing; /* out -- additional bytes needed for result */ 706 __u32 elem_cnt; /* out */ 707 __u32 elem_missed; /* out */ 708 __u64 val[]; /* out */ 709}; 710 711struct btrfs_ioctl_ino_path_args { 712 __u64 inum; /* in */ 713 __u64 size; /* in */ 714 __u64 reserved[4]; 715 /* struct btrfs_data_container *fspath; out */ 716 __u64 fspath; /* out */ 717}; 718 719struct btrfs_ioctl_logical_ino_args { 720 __u64 logical; /* in */ 721 __u64 size; /* in */ 722 __u64 reserved[3]; /* must be 0 for now */ 723 __u64 flags; /* in, v2 only */ 724 /* struct btrfs_data_container *inodes; out */ 725 __u64 inodes; 726}; 727 728/* 729 * Return every ref to the extent, not just those containing logical block. 730 * Requires logical == extent bytenr. 731 */ 732#define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) 733 734enum btrfs_dev_stat_values { 735 /* disk I/O failure stats */ 736 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ 737 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ 738 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ 739 740 /* stats for indirect indications for I/O failures */ 741 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or 742 * contents is illegal: this is an 743 * indication that the block was damaged 744 * during read or write, or written to 745 * wrong location or read from wrong 746 * location */ 747 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not 748 * been written */ 749 750 BTRFS_DEV_STAT_VALUES_MAX 751}; 752 753/* Reset statistics after reading; needs SYS_ADMIN capability */ 754#define BTRFS_DEV_STATS_RESET (1ULL << 0) 755 756struct btrfs_ioctl_get_dev_stats { 757 __u64 devid; /* in */ 758 __u64 nr_items; /* in/out */ 759 __u64 flags; /* in/out */ 760 761 /* out values: */ 762 __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; 763 764 /* 765 * This pads the struct to 1032 bytes. It was originally meant to pad to 766 * 1024 bytes, but when adding the flags field, the padding calculation 767 * was not adjusted. 768 */ 769 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; 770}; 771 772#define BTRFS_QUOTA_CTL_ENABLE 1 773#define BTRFS_QUOTA_CTL_DISABLE 2 774#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 775#define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4 776struct btrfs_ioctl_quota_ctl_args { 777 __u64 cmd; 778 __u64 status; 779}; 780 781struct btrfs_ioctl_quota_rescan_args { 782 __u64 flags; 783 __u64 progress; 784 __u64 reserved[6]; 785}; 786 787struct btrfs_ioctl_qgroup_assign_args { 788 __u64 assign; 789 __u64 src; 790 __u64 dst; 791}; 792 793struct btrfs_ioctl_qgroup_create_args { 794 __u64 create; 795 __u64 qgroupid; 796}; 797struct btrfs_ioctl_timespec { 798 __u64 sec; 799 __u32 nsec; 800}; 801 802struct btrfs_ioctl_received_subvol_args { 803 char uuid[BTRFS_UUID_SIZE]; /* in */ 804 __u64 stransid; /* in */ 805 __u64 rtransid; /* out */ 806 struct btrfs_ioctl_timespec stime; /* in */ 807 struct btrfs_ioctl_timespec rtime; /* out */ 808 __u64 flags; /* in */ 809 __u64 reserved[16]; /* in */ 810}; 811 812/* 813 * Caller doesn't want file data in the send stream, even if the 814 * search of clone sources doesn't find an extent. UPDATE_EXTENT 815 * commands will be sent instead of WRITE commands. 816 */ 817#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 818 819/* 820 * Do not add the leading stream header. Used when multiple snapshots 821 * are sent back to back. 822 */ 823#define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 824 825/* 826 * Omit the command at the end of the stream that indicated the end 827 * of the stream. This option is used when multiple snapshots are 828 * sent back to back. 829 */ 830#define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 831 832/* 833 * Read the protocol version in the structure 834 */ 835#define BTRFS_SEND_FLAG_VERSION 0x8 836 837/* 838 * Send compressed data using the ENCODED_WRITE command instead of decompressing 839 * the data and sending it with the WRITE command. This requires protocol 840 * version >= 2. 841 */ 842#define BTRFS_SEND_FLAG_COMPRESSED 0x10 843 844#define BTRFS_SEND_FLAG_MASK \ 845 (BTRFS_SEND_FLAG_NO_FILE_DATA | \ 846 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ 847 BTRFS_SEND_FLAG_OMIT_END_CMD | \ 848 BTRFS_SEND_FLAG_VERSION | \ 849 BTRFS_SEND_FLAG_COMPRESSED) 850 851struct btrfs_ioctl_send_args { 852 __s64 send_fd; /* in */ 853 __u64 clone_sources_count; /* in */ 854 __u64 __user *clone_sources; /* in */ 855 __u64 parent_root; /* in */ 856 __u64 flags; /* in */ 857 __u32 version; /* in */ 858 __u8 reserved[28]; /* in */ 859}; 860 861/* 862 * Information about a fs tree root. 863 * 864 * All items are filled by the ioctl 865 */ 866struct btrfs_ioctl_get_subvol_info_args { 867 /* Id of this subvolume */ 868 __u64 treeid; 869 870 /* Name of this subvolume, used to get the real name at mount point */ 871 char name[BTRFS_VOL_NAME_MAX + 1]; 872 873 /* 874 * Id of the subvolume which contains this subvolume. 875 * Zero for top-level subvolume or a deleted subvolume. 876 */ 877 __u64 parent_id; 878 879 /* 880 * Inode number of the directory which contains this subvolume. 881 * Zero for top-level subvolume or a deleted subvolume 882 */ 883 __u64 dirid; 884 885 /* Latest transaction id of this subvolume */ 886 __u64 generation; 887 888 /* Flags of this subvolume */ 889 __u64 flags; 890 891 /* UUID of this subvolume */ 892 __u8 uuid[BTRFS_UUID_SIZE]; 893 894 /* 895 * UUID of the subvolume of which this subvolume is a snapshot. 896 * All zero for a non-snapshot subvolume. 897 */ 898 __u8 parent_uuid[BTRFS_UUID_SIZE]; 899 900 /* 901 * UUID of the subvolume from which this subvolume was received. 902 * All zero for non-received subvolume. 903 */ 904 __u8 received_uuid[BTRFS_UUID_SIZE]; 905 906 /* Transaction id indicating when change/create/send/receive happened */ 907 __u64 ctransid; 908 __u64 otransid; 909 __u64 stransid; 910 __u64 rtransid; 911 /* Time corresponding to c/o/s/rtransid */ 912 struct btrfs_ioctl_timespec ctime; 913 struct btrfs_ioctl_timespec otime; 914 struct btrfs_ioctl_timespec stime; 915 struct btrfs_ioctl_timespec rtime; 916 917 /* Must be zero */ 918 __u64 reserved[8]; 919}; 920 921#define BTRFS_MAX_ROOTREF_BUFFER_NUM 255 922struct btrfs_ioctl_get_subvol_rootref_args { 923 /* in/out, minimum id of rootref's treeid to be searched */ 924 __u64 min_treeid; 925 926 /* out */ 927 struct { 928 __u64 treeid; 929 __u64 dirid; 930 } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM]; 931 932 /* out, number of found items */ 933 __u8 num_items; 934 __u8 align[7]; 935}; 936 937/* 938 * Data and metadata for an encoded read or write. 939 * 940 * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g., 941 * compression). This can be used to read the compressed contents of a file or 942 * write pre-compressed data directly to a file. 943 * 944 * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially 945 * preadv/pwritev with additional metadata about how the data is encoded and the 946 * size of the unencoded data. 947 * 948 * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills 949 * the metadata fields, and returns the size of the encoded data. It reads one 950 * extent per call. It can also read data which is not encoded. 951 * 952 * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data 953 * from the iovecs, and returns the size of the encoded data. Note that the 954 * encoded data is not validated when it is written; if it is not valid (e.g., 955 * it cannot be decompressed), then a subsequent read may return an error. 956 * 957 * Since the filesystem page cache contains decoded data, encoded I/O bypasses 958 * the page cache. Encoded I/O requires CAP_SYS_ADMIN. 959 */ 960struct btrfs_ioctl_encoded_io_args { 961 /* Input parameters for both reads and writes. */ 962 963 /* 964 * iovecs containing encoded data. 965 * 966 * For reads, if the size of the encoded data is larger than the sum of 967 * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with 968 * ENOBUFS. 969 * 970 * For writes, the size of the encoded data is the sum of iov[n].iov_len 971 * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may 972 * increase in the future). This must also be less than or equal to 973 * unencoded_len. 974 */ 975 const struct iovec __user *iov; 976 /* Number of iovecs. */ 977 unsigned long iovcnt; 978 /* 979 * Offset in file. 980 * 981 * For writes, must be aligned to the sector size of the filesystem. 982 */ 983 __s64 offset; 984 /* Currently must be zero. */ 985 __u64 flags; 986 987 /* 988 * For reads, the following members are output parameters that will 989 * contain the returned metadata for the encoded data. 990 * For writes, the following members must be set to the metadata for the 991 * encoded data. 992 */ 993 994 /* 995 * Length of the data in the file. 996 * 997 * Must be less than or equal to unencoded_len - unencoded_offset. For 998 * writes, must be aligned to the sector size of the filesystem unless 999 * the data ends at or beyond the current end of the file. 1000 */ 1001 __u64 len; 1002 /* 1003 * Length of the unencoded (i.e., decrypted and decompressed) data. 1004 * 1005 * For writes, must be no more than 128 KiB (this limit may increase in 1006 * the future). If the unencoded data is actually longer than 1007 * unencoded_len, then it is truncated; if it is shorter, then it is 1008 * extended with zeroes. 1009 */ 1010 __u64 unencoded_len; 1011 /* 1012 * Offset from the first byte of the unencoded data to the first byte of 1013 * logical data in the file. 1014 * 1015 * Must be less than unencoded_len. 1016 */ 1017 __u64 unencoded_offset; 1018 /* 1019 * BTRFS_ENCODED_IO_COMPRESSION_* type. 1020 * 1021 * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE. 1022 */ 1023 __u32 compression; 1024 /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */ 1025 __u32 encryption; 1026 /* 1027 * Reserved for future expansion. 1028 * 1029 * For reads, always returned as zero. Users should check for non-zero 1030 * bytes. If there are any, then the kernel has a newer version of this 1031 * structure with additional information that the user definition is 1032 * missing. 1033 * 1034 * For writes, must be zeroed. 1035 */ 1036 __u8 reserved[64]; 1037}; 1038 1039/* Data is not compressed. */ 1040#define BTRFS_ENCODED_IO_COMPRESSION_NONE 0 1041/* Data is compressed as a single zlib stream. */ 1042#define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1 1043/* 1044 * Data is compressed as a single zstd frame with the windowLog compression 1045 * parameter set to no more than 17. 1046 */ 1047#define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2 1048/* 1049 * Data is compressed sector by sector (using the sector size indicated by the 1050 * name of the constant) with LZO1X and wrapped in the format documented in 1051 * fs/btrfs/lzo.c. For writes, the compression sector size must match the 1052 * filesystem sector size. 1053 */ 1054#define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3 1055#define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4 1056#define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5 1057#define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6 1058#define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7 1059#define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8 1060 1061/* Data is not encrypted. */ 1062#define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0 1063#define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1 1064 1065/* 1066 * Wait for subvolume cleaning process. This queries the kernel queue and it 1067 * can change between the calls. 1068 * 1069 * - FOR_ONE - specify the subvolid 1070 * - FOR_QUEUED - wait for all currently queued 1071 * - COUNT - count number of queued 1072 * - PEEK_FIRST - read which is the first in the queue (to be cleaned or being 1073 * cleaned already), or 0 if the queue is empty 1074 * - PEEK_LAST - read the last subvolid in the queue, or 0 if the queue is empty 1075 */ 1076struct btrfs_ioctl_subvol_wait { 1077 __u64 subvolid; 1078 __u32 mode; 1079 __u32 count; 1080}; 1081 1082#define BTRFS_SUBVOL_SYNC_WAIT_FOR_ONE (0) 1083#define BTRFS_SUBVOL_SYNC_WAIT_FOR_QUEUED (1) 1084#define BTRFS_SUBVOL_SYNC_COUNT (2) 1085#define BTRFS_SUBVOL_SYNC_PEEK_FIRST (3) 1086#define BTRFS_SUBVOL_SYNC_PEEK_LAST (4) 1087 1088/* Error codes as returned by the kernel */ 1089enum btrfs_err_code { 1090 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, 1091 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, 1092 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, 1093 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, 1094 BTRFS_ERROR_DEV_TGT_REPLACE, 1095 BTRFS_ERROR_DEV_MISSING_NOT_FOUND, 1096 BTRFS_ERROR_DEV_ONLY_WRITABLE, 1097 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS, 1098 BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET, 1099 BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET, 1100}; 1101 1102/* Flags for IOC_SHUTDOWN, must match XFS_FSOP_GOING_FLAGS_* flags. */ 1103#define BTRFS_SHUTDOWN_FLAGS_DEFAULT 0x0 1104#define BTRFS_SHUTDOWN_FLAGS_LOGFLUSH 0x1 1105#define BTRFS_SHUTDOWN_FLAGS_NOLOGFLUSH 0x2 1106#define BTRFS_SHUTDOWN_FLAGS_LAST 0x3 1107 1108#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ 1109 struct btrfs_ioctl_vol_args) 1110#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ 1111 struct btrfs_ioctl_vol_args) 1112#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ 1113 struct btrfs_ioctl_vol_args) 1114#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ 1115 struct btrfs_ioctl_vol_args) 1116#define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \ 1117 struct btrfs_ioctl_vol_args) 1118/* trans start and trans end are dangerous, and only for 1119 * use by applications that know how to avoid the 1120 * resulting deadlocks 1121 */ 1122#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) 1123#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) 1124#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) 1125 1126#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) 1127#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ 1128 struct btrfs_ioctl_vol_args) 1129#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ 1130 struct btrfs_ioctl_vol_args) 1131#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ 1132 struct btrfs_ioctl_vol_args) 1133 1134#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ 1135 struct btrfs_ioctl_clone_range_args) 1136 1137#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ 1138 struct btrfs_ioctl_vol_args) 1139#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ 1140 struct btrfs_ioctl_vol_args) 1141#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ 1142 struct btrfs_ioctl_defrag_range_args) 1143#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1144 struct btrfs_ioctl_search_args) 1145#define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1146 struct btrfs_ioctl_search_args_v2) 1147#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ 1148 struct btrfs_ioctl_ino_lookup_args) 1149#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) 1150#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ 1151 struct btrfs_ioctl_space_args) 1152#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) 1153#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) 1154#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ 1155 struct btrfs_ioctl_vol_args_v2) 1156#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ 1157 struct btrfs_ioctl_vol_args_v2) 1158#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) 1159#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) 1160#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ 1161 struct btrfs_ioctl_scrub_args) 1162#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) 1163#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ 1164 struct btrfs_ioctl_scrub_args) 1165#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ 1166 struct btrfs_ioctl_dev_info_args) 1167#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ 1168 struct btrfs_ioctl_fs_info_args) 1169#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ 1170 struct btrfs_ioctl_balance_args) 1171#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) 1172#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ 1173 struct btrfs_ioctl_balance_args) 1174#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ 1175 struct btrfs_ioctl_ino_path_args) 1176#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ 1177 struct btrfs_ioctl_logical_ino_args) 1178#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ 1179 struct btrfs_ioctl_received_subvol_args) 1180#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) 1181#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ 1182 struct btrfs_ioctl_vol_args) 1183#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ 1184 struct btrfs_ioctl_quota_ctl_args) 1185#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ 1186 struct btrfs_ioctl_qgroup_assign_args) 1187#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ 1188 struct btrfs_ioctl_qgroup_create_args) 1189#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ 1190 struct btrfs_ioctl_qgroup_limit_args) 1191#define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ 1192 struct btrfs_ioctl_quota_rescan_args) 1193#define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ 1194 struct btrfs_ioctl_quota_rescan_args) 1195#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) 1196#define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL 1197#define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL 1198#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ 1199 struct btrfs_ioctl_get_dev_stats) 1200#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ 1201 struct btrfs_ioctl_dev_replace_args) 1202#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ 1203 struct btrfs_ioctl_same_args) 1204#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1205 struct btrfs_ioctl_feature_flags) 1206#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 1207 struct btrfs_ioctl_feature_flags[2]) 1208#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1209 struct btrfs_ioctl_feature_flags[3]) 1210#define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ 1211 struct btrfs_ioctl_vol_args_v2) 1212#define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ 1213 struct btrfs_ioctl_logical_ino_args) 1214#define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \ 1215 struct btrfs_ioctl_get_subvol_info_args) 1216#define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \ 1217 struct btrfs_ioctl_get_subvol_rootref_args) 1218#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \ 1219 struct btrfs_ioctl_ino_lookup_user_args) 1220#define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \ 1221 struct btrfs_ioctl_vol_args_v2) 1222#define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \ 1223 struct btrfs_ioctl_encoded_io_args) 1224#define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ 1225 struct btrfs_ioctl_encoded_io_args) 1226#define BTRFS_IOC_SUBVOL_SYNC_WAIT _IOW(BTRFS_IOCTL_MAGIC, 65, \ 1227 struct btrfs_ioctl_subvol_wait) 1228 1229/* Shutdown ioctl should follow XFS's interfaces, thus not using btrfs magic. */ 1230#define BTRFS_IOC_SHUTDOWN _IOR('X', 125, __u32) 1231 1232#ifdef __cplusplus 1233} 1234#endif 1235 1236#endif /* _UAPI_LINUX_BTRFS_H */
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