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