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