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