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