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 #define BTRFS_QGROUP_INHERIT_FLAGS_SUPP (BTRFS_QGROUP_INHERIT_SET_LIMITS) 96 97 struct btrfs_qgroup_inherit { 98 __u64 flags; 99 __u64 num_qgroups; 100 __u64 num_ref_copies; 101 __u64 num_excl_copies; 102 struct btrfs_qgroup_limit lim; 103 __u64 qgroups[]; 104 }; 105 106 struct btrfs_ioctl_qgroup_limit_args { 107 __u64 qgroupid; 108 struct btrfs_qgroup_limit lim; 109 }; 110 111 /* 112 * Arguments for specification of subvolumes or devices, supporting by-name or 113 * by-id and flags 114 * 115 * The set of supported flags depends on the ioctl 116 * 117 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: 118 * - BTRFS_IOC_SUBVOL_GETFLAGS 119 * - BTRFS_IOC_SUBVOL_SETFLAGS 120 */ 121 122 /* Supported flags for BTRFS_IOC_RM_DEV_V2 */ 123 #define BTRFS_DEVICE_REMOVE_ARGS_MASK \ 124 (BTRFS_DEVICE_SPEC_BY_ID) 125 126 /* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */ 127 #define BTRFS_SUBVOL_CREATE_ARGS_MASK \ 128 (BTRFS_SUBVOL_RDONLY | \ 129 BTRFS_SUBVOL_QGROUP_INHERIT) 130 131 /* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */ 132 #define BTRFS_SUBVOL_DELETE_ARGS_MASK \ 133 (BTRFS_SUBVOL_SPEC_BY_ID) 134 135 struct btrfs_ioctl_vol_args_v2 { 136 __s64 fd; 137 __u64 transid; 138 __u64 flags; 139 union { 140 struct { 141 __u64 size; 142 struct btrfs_qgroup_inherit __user *qgroup_inherit; 143 }; 144 __u64 unused[4]; 145 }; 146 union { 147 char name[BTRFS_SUBVOL_NAME_MAX + 1]; 148 __u64 devid; 149 __u64 subvolid; 150 }; 151 }; 152 153 /* 154 * structure to report errors and progress to userspace, either as a 155 * result of a finished scrub, a canceled scrub or a progress inquiry 156 */ 157 struct btrfs_scrub_progress { 158 __u64 data_extents_scrubbed; /* # of data extents scrubbed */ 159 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ 160 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ 161 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ 162 __u64 read_errors; /* # of read errors encountered (EIO) */ 163 __u64 csum_errors; /* # of failed csum checks */ 164 __u64 verify_errors; /* # of occurrences, where the metadata 165 * of a tree block did not match the 166 * expected values, like generation or 167 * logical */ 168 __u64 no_csum; /* # of 4k data block for which no csum 169 * is present, probably the result of 170 * data written with nodatasum */ 171 __u64 csum_discards; /* # of csum for which no data was found 172 * in the extent tree. */ 173 __u64 super_errors; /* # of bad super blocks encountered */ 174 __u64 malloc_errors; /* # of internal kmalloc errors. These 175 * will likely cause an incomplete 176 * scrub */ 177 __u64 uncorrectable_errors; /* # of errors where either no intact 178 * copy was found or the writeback 179 * failed */ 180 __u64 corrected_errors; /* # of errors corrected */ 181 __u64 last_physical; /* last physical address scrubbed. In 182 * case a scrub was aborted, this can 183 * be used to restart the scrub */ 184 __u64 unverified_errors; /* # of occurrences where a read for a 185 * full (64k) bio failed, but the re- 186 * check succeeded for each 4k piece. 187 * Intermittent error. */ 188 }; 189 190 #define BTRFS_SCRUB_READONLY 1 191 #define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY) 192 struct btrfs_ioctl_scrub_args { 193 __u64 devid; /* in */ 194 __u64 start; /* in */ 195 __u64 end; /* in */ 196 __u64 flags; /* in */ 197 struct btrfs_scrub_progress progress; /* out */ 198 /* pad to 1k */ 199 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; 200 }; 201 202 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 203 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 204 struct btrfs_ioctl_dev_replace_start_params { 205 __u64 srcdevid; /* in, if 0, use srcdev_name instead */ 206 __u64 cont_reading_from_srcdev_mode; /* in, see #define 207 * above */ 208 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 209 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 210 }; 211 212 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 213 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 214 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 215 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 216 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 217 struct btrfs_ioctl_dev_replace_status_params { 218 __u64 replace_state; /* out, see #define above */ 219 __u64 progress_1000; /* out, 0 <= x <= 1000 */ 220 __u64 time_started; /* out, seconds since 1-Jan-1970 */ 221 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ 222 __u64 num_write_errors; /* out */ 223 __u64 num_uncorrectable_read_errors; /* out */ 224 }; 225 226 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 227 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 228 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 229 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 230 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 231 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 232 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 233 struct btrfs_ioctl_dev_replace_args { 234 __u64 cmd; /* in */ 235 __u64 result; /* out */ 236 237 union { 238 struct btrfs_ioctl_dev_replace_start_params start; 239 struct btrfs_ioctl_dev_replace_status_params status; 240 }; /* in/out */ 241 242 __u64 spare[64]; 243 }; 244 245 struct btrfs_ioctl_dev_info_args { 246 __u64 devid; /* in/out */ 247 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ 248 __u64 bytes_used; /* out */ 249 __u64 total_bytes; /* out */ 250 /* 251 * Optional, out. 252 * 253 * Showing the fsid of the device, allowing user space to check if this 254 * device is a seeding one. 255 * 256 * Introduced in v6.3, thus user space still needs to check if kernel 257 * changed this value. Older kernel will not touch the values here. 258 */ 259 __u8 fsid[BTRFS_UUID_SIZE]; 260 __u64 unused[377]; /* pad to 4k */ 261 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ 262 }; 263 264 /* 265 * Retrieve information about the filesystem 266 */ 267 268 /* Request information about checksum type and size */ 269 #define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0) 270 271 /* Request information about filesystem generation */ 272 #define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1) 273 /* Request information about filesystem metadata UUID */ 274 #define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2) 275 276 struct btrfs_ioctl_fs_info_args { 277 __u64 max_id; /* out */ 278 __u64 num_devices; /* out */ 279 __u8 fsid[BTRFS_FSID_SIZE]; /* out */ 280 __u32 nodesize; /* out */ 281 __u32 sectorsize; /* out */ 282 __u32 clone_alignment; /* out */ 283 /* See BTRFS_FS_INFO_FLAG_* */ 284 __u16 csum_type; /* out */ 285 __u16 csum_size; /* out */ 286 __u64 flags; /* in/out */ 287 __u64 generation; /* out */ 288 __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */ 289 __u8 reserved[944]; /* pad to 1k */ 290 }; 291 292 /* 293 * feature flags 294 * 295 * Used by: 296 * struct btrfs_ioctl_feature_flags 297 */ 298 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) 299 /* 300 * Older kernels (< 4.9) on big-endian systems produced broken free space tree 301 * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions 302 * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted. 303 * btrfs-progs can also intentionally clear this bit to ask the kernel to 304 * rebuild the free space tree, however this might not work on older kernels 305 * that do not know about this bit. If not sure, clear the cache manually on 306 * first mount when booting older kernel versions. 307 */ 308 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1) 309 #define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2) 310 311 /* 312 * Put all block group items into a dedicated block group tree, greatly 313 * reducing mount time for large filesystem due to better locality. 314 */ 315 #define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE (1ULL << 3) 316 317 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) 318 #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) 319 #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) 320 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) 321 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4) 322 323 /* 324 * older kernels tried to do bigger metadata blocks, but the 325 * code was pretty buggy. Lets not let them try anymore. 326 */ 327 #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) 328 329 #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) 330 #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) 331 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) 332 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) 333 #define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10) 334 #define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11) 335 #define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12) 336 #define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13) 337 #define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14) 338 #define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA (1ULL << 16) 339 #define BTRFS_FEATURE_INCOMPAT_REMAP_TREE (1ULL << 17) 340 341 struct btrfs_ioctl_feature_flags { 342 __u64 compat_flags; 343 __u64 compat_ro_flags; 344 __u64 incompat_flags; 345 }; 346 347 /* balance control ioctl modes */ 348 #define BTRFS_BALANCE_CTL_PAUSE 1 349 #define BTRFS_BALANCE_CTL_CANCEL 2 350 351 /* 352 * this is packed, because it should be exactly the same as its disk 353 * byte order counterpart (struct btrfs_disk_balance_args) 354 */ 355 struct btrfs_balance_args { 356 __u64 profiles; 357 358 /* 359 * usage filter 360 * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N' 361 * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max 362 */ 363 union { 364 __u64 usage; 365 struct { 366 __u32 usage_min; 367 __u32 usage_max; 368 }; 369 }; 370 __u64 devid; 371 __u64 pstart; 372 __u64 pend; 373 __u64 vstart; 374 __u64 vend; 375 376 __u64 target; 377 378 __u64 flags; 379 380 /* 381 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' 382 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum 383 * and maximum 384 */ 385 union { 386 __u64 limit; /* limit number of processed chunks */ 387 struct { 388 __u32 limit_min; 389 __u32 limit_max; 390 }; 391 }; 392 393 /* 394 * Process chunks that cross stripes_min..stripes_max devices, 395 * BTRFS_BALANCE_ARGS_STRIPES_RANGE 396 */ 397 __u32 stripes_min; 398 __u32 stripes_max; 399 400 __u64 unused[6]; 401 } __attribute__ ((__packed__)); 402 403 /* report balance progress to userspace */ 404 struct btrfs_balance_progress { 405 __u64 expected; /* estimated # of chunks that will be 406 * relocated to fulfill the request */ 407 __u64 considered; /* # of chunks we have considered so far */ 408 __u64 completed; /* # of chunks relocated so far */ 409 }; 410 411 /* 412 * flags definition for balance 413 * 414 * Restriper's general type filter 415 * 416 * Used by: 417 * btrfs_ioctl_balance_args.flags 418 * btrfs_balance_control.flags (internal) 419 */ 420 #define BTRFS_BALANCE_DATA (1ULL << 0) 421 #define BTRFS_BALANCE_SYSTEM (1ULL << 1) 422 #define BTRFS_BALANCE_METADATA (1ULL << 2) 423 424 #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ 425 BTRFS_BALANCE_SYSTEM | \ 426 BTRFS_BALANCE_METADATA) 427 428 #define BTRFS_BALANCE_FORCE (1ULL << 3) 429 #define BTRFS_BALANCE_RESUME (1ULL << 4) 430 431 /* 432 * flags definitions for per-type balance args 433 * 434 * Balance filters 435 * 436 * Used by: 437 * struct btrfs_balance_args 438 */ 439 #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) 440 #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) 441 #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) 442 #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) 443 #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) 444 #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) 445 #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) 446 #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) 447 #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) 448 449 #define BTRFS_BALANCE_ARGS_MASK \ 450 (BTRFS_BALANCE_ARGS_PROFILES | \ 451 BTRFS_BALANCE_ARGS_USAGE | \ 452 BTRFS_BALANCE_ARGS_DEVID | \ 453 BTRFS_BALANCE_ARGS_DRANGE | \ 454 BTRFS_BALANCE_ARGS_VRANGE | \ 455 BTRFS_BALANCE_ARGS_LIMIT | \ 456 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ 457 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ 458 BTRFS_BALANCE_ARGS_USAGE_RANGE) 459 460 /* 461 * Profile changing flags. When SOFT is set we won't relocate chunk if 462 * it already has the target profile (even though it may be 463 * half-filled). 464 */ 465 #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) 466 #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) 467 468 469 /* 470 * flags definition for balance state 471 * 472 * Used by: 473 * struct btrfs_ioctl_balance_args.state 474 */ 475 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) 476 #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) 477 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) 478 479 struct btrfs_ioctl_balance_args { 480 __u64 flags; /* in/out */ 481 __u64 state; /* out */ 482 483 struct btrfs_balance_args data; /* in/out */ 484 struct btrfs_balance_args meta; /* in/out */ 485 struct btrfs_balance_args sys; /* in/out */ 486 487 struct btrfs_balance_progress stat; /* out */ 488 489 __u64 unused[72]; /* pad to 1k */ 490 }; 491 492 #define BTRFS_INO_LOOKUP_PATH_MAX 4080 493 struct btrfs_ioctl_ino_lookup_args { 494 __u64 treeid; 495 __u64 objectid; 496 char name[BTRFS_INO_LOOKUP_PATH_MAX]; 497 }; 498 499 #define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1) 500 struct btrfs_ioctl_ino_lookup_user_args { 501 /* in, inode number containing the subvolume of 'subvolid' */ 502 __u64 dirid; 503 /* in */ 504 __u64 treeid; 505 /* out, name of the subvolume of 'treeid' */ 506 char name[BTRFS_VOL_NAME_MAX + 1]; 507 /* 508 * out, constructed path from the directory with which the ioctl is 509 * called to dirid 510 */ 511 char path[BTRFS_INO_LOOKUP_USER_PATH_MAX]; 512 }; 513 514 /* Search criteria for the btrfs SEARCH ioctl family. */ 515 struct btrfs_ioctl_search_key { 516 /* 517 * The tree we're searching in. 1 is the tree of tree roots, 2 is the 518 * extent tree, etc... 519 * 520 * A special tree_id value of 0 will cause a search in the subvolume 521 * tree that the inode which is passed to the ioctl is part of. 522 */ 523 __u64 tree_id; /* in */ 524 525 /* 526 * When doing a tree search, we're actually taking a slice from a 527 * linear search space of 136-bit keys. 528 * 529 * A full 136-bit tree key is composed as: 530 * (objectid << 72) + (type << 64) + offset 531 * 532 * The individual min and max values for objectid, type and offset 533 * define the min_key and max_key values for the search range. All 534 * metadata items with a key in the interval [min_key, max_key] will be 535 * returned. 536 * 537 * Additionally, we can filter the items returned on transaction id of 538 * the metadata block they're stored in by specifying a transid range. 539 * Be aware that this transaction id only denotes when the metadata 540 * page that currently contains the item got written the last time as 541 * result of a COW operation. The number does not have any meaning 542 * related to the transaction in which an individual item that is being 543 * returned was created or changed. 544 */ 545 __u64 min_objectid; /* in */ 546 __u64 max_objectid; /* in */ 547 __u64 min_offset; /* in */ 548 __u64 max_offset; /* in */ 549 __u64 min_transid; /* in */ 550 __u64 max_transid; /* in */ 551 __u32 min_type; /* in */ 552 __u32 max_type; /* in */ 553 554 /* 555 * input: The maximum amount of results desired. 556 * output: The actual amount of items returned, restricted by any of: 557 * - reaching the upper bound of the search range 558 * - reaching the input nr_items amount of items 559 * - completely filling the supplied memory buffer 560 */ 561 __u32 nr_items; /* in/out */ 562 563 /* align to 64 bits */ 564 __u32 unused; 565 566 /* some extra for later */ 567 __u64 unused1; 568 __u64 unused2; 569 __u64 unused3; 570 __u64 unused4; 571 }; 572 573 struct btrfs_ioctl_search_header { 574 __u64 transid; 575 __u64 objectid; 576 __u64 offset; 577 __u32 type; 578 __u32 len; 579 } __attribute__ ((__may_alias__)); 580 581 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) 582 /* 583 * the buf is an array of search headers where 584 * each header is followed by the actual item 585 * the type field is expanded to 32 bits for alignment 586 */ 587 struct btrfs_ioctl_search_args { 588 struct btrfs_ioctl_search_key key; 589 char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; 590 }; 591 592 /* 593 * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes. 594 * The allocated size of the buffer is set in buf_size. 595 */ 596 struct btrfs_ioctl_search_args_v2 { 597 struct btrfs_ioctl_search_key key; /* in/out - search parameters */ 598 __u64 buf_size; /* in - size of buffer 599 * out - on EOVERFLOW: needed size 600 * to store item */ 601 __u64 buf[]; /* out - found items */ 602 }; 603 604 /* With a @src_length of zero, the range from @src_offset->EOF is cloned! */ 605 struct btrfs_ioctl_clone_range_args { 606 __s64 src_fd; 607 __u64 src_offset, src_length; 608 __u64 dest_offset; 609 }; 610 611 /* 612 * flags definition for the defrag range ioctl 613 * 614 * Used by: 615 * struct btrfs_ioctl_defrag_range_args.flags 616 */ 617 #define BTRFS_DEFRAG_RANGE_COMPRESS 1 618 #define BTRFS_DEFRAG_RANGE_START_IO 2 619 #define BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL 4 620 /* Request no compression on the range (uncompress if necessary). */ 621 #define BTRFS_DEFRAG_RANGE_NOCOMPRESS 8 622 #define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \ 623 BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL | \ 624 BTRFS_DEFRAG_RANGE_NOCOMPRESS | \ 625 BTRFS_DEFRAG_RANGE_START_IO) 626 627 struct btrfs_ioctl_defrag_range_args { 628 /* start of the defrag operation */ 629 __u64 start; 630 631 /* number of bytes to defrag, use (u64)-1 to say all */ 632 __u64 len; 633 634 /* 635 * flags for the operation, which can include turning 636 * on compression for this one defrag 637 */ 638 __u64 flags; 639 640 /* 641 * any extent bigger than this will be considered 642 * already defragged. Use 0 to take the kernel default 643 * Use 1 to say every single extent must be rewritten 644 */ 645 __u32 extent_thresh; 646 647 /* 648 * which compression method to use if turning on compression 649 * for this defrag operation. If unspecified, zlib will be 650 * used. If compression level is also being specified, set the 651 * BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL flag and fill the compress 652 * member structure instead of the compress_type field. 653 */ 654 union { 655 __u32 compress_type; 656 struct { 657 __u8 type; 658 __s8 level; 659 } compress; 660 }; 661 662 /* spare for later */ 663 __u32 unused[4]; 664 }; 665 666 667 #define BTRFS_SAME_DATA_DIFFERS 1 668 /* For extent-same ioctl */ 669 struct btrfs_ioctl_same_extent_info { 670 __s64 fd; /* in - destination file */ 671 __u64 logical_offset; /* in - start of extent in destination */ 672 __u64 bytes_deduped; /* out - total # of bytes we were able 673 * to dedupe from this file */ 674 /* status of this dedupe operation: 675 * 0 if dedup succeeds 676 * < 0 for error 677 * == BTRFS_SAME_DATA_DIFFERS if data differs 678 */ 679 __s32 status; /* out - see above description */ 680 __u32 reserved; 681 }; 682 683 struct btrfs_ioctl_same_args { 684 __u64 logical_offset; /* in - start of extent in source */ 685 __u64 length; /* in - length of extent */ 686 __u16 dest_count; /* in - total elements in info array */ 687 __u16 reserved1; 688 __u32 reserved2; 689 struct btrfs_ioctl_same_extent_info info[]; 690 }; 691 692 struct btrfs_ioctl_space_info { 693 __u64 flags; 694 __u64 total_bytes; 695 __u64 used_bytes; 696 }; 697 698 struct btrfs_ioctl_space_args { 699 __u64 space_slots; 700 __u64 total_spaces; 701 struct btrfs_ioctl_space_info spaces[]; 702 }; 703 704 struct btrfs_data_container { 705 __u32 bytes_left; /* out -- bytes not needed to deliver output */ 706 __u32 bytes_missing; /* out -- additional bytes needed for result */ 707 __u32 elem_cnt; /* out */ 708 __u32 elem_missed; /* out */ 709 __u64 val[]; /* out */ 710 }; 711 712 struct btrfs_ioctl_ino_path_args { 713 __u64 inum; /* in */ 714 __u64 size; /* in */ 715 __u64 reserved[4]; 716 /* struct btrfs_data_container *fspath; out */ 717 __u64 fspath; /* out */ 718 }; 719 720 struct btrfs_ioctl_logical_ino_args { 721 __u64 logical; /* in */ 722 __u64 size; /* in */ 723 __u64 reserved[3]; /* must be 0 for now */ 724 __u64 flags; /* in, v2 only */ 725 /* struct btrfs_data_container *inodes; out */ 726 __u64 inodes; 727 }; 728 729 /* 730 * Return every ref to the extent, not just those containing logical block. 731 * Requires logical == extent bytenr. 732 */ 733 #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) 734 735 enum btrfs_dev_stat_values { 736 /* disk I/O failure stats */ 737 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ 738 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ 739 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ 740 741 /* stats for indirect indications for I/O failures */ 742 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or 743 * contents is illegal: this is an 744 * indication that the block was damaged 745 * during read or write, or written to 746 * wrong location or read from wrong 747 * location */ 748 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not 749 * been written */ 750 751 BTRFS_DEV_STAT_VALUES_MAX 752 }; 753 754 /* Reset statistics after reading; needs SYS_ADMIN capability */ 755 #define BTRFS_DEV_STATS_RESET (1ULL << 0) 756 757 struct btrfs_ioctl_get_dev_stats { 758 __u64 devid; /* in */ 759 __u64 nr_items; /* in/out */ 760 __u64 flags; /* in/out */ 761 762 /* out values: */ 763 __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; 764 765 /* 766 * This pads the struct to 1032 bytes. It was originally meant to pad to 767 * 1024 bytes, but when adding the flags field, the padding calculation 768 * was not adjusted. 769 */ 770 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; 771 }; 772 773 #define BTRFS_QUOTA_CTL_ENABLE 1 774 #define BTRFS_QUOTA_CTL_DISABLE 2 775 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 776 #define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4 777 struct btrfs_ioctl_quota_ctl_args { 778 __u64 cmd; 779 __u64 status; 780 }; 781 782 struct btrfs_ioctl_quota_rescan_args { 783 __u64 flags; 784 __u64 progress; 785 __u64 reserved[6]; 786 }; 787 788 struct btrfs_ioctl_qgroup_assign_args { 789 __u64 assign; 790 __u64 src; 791 __u64 dst; 792 }; 793 794 struct btrfs_ioctl_qgroup_create_args { 795 __u64 create; 796 __u64 qgroupid; 797 }; 798 struct btrfs_ioctl_timespec { 799 __u64 sec; 800 __u32 nsec; 801 }; 802 803 struct btrfs_ioctl_received_subvol_args { 804 char uuid[BTRFS_UUID_SIZE]; /* in */ 805 __u64 stransid; /* in */ 806 __u64 rtransid; /* out */ 807 struct btrfs_ioctl_timespec stime; /* in */ 808 struct btrfs_ioctl_timespec rtime; /* out */ 809 __u64 flags; /* in */ 810 __u64 reserved[16]; /* in */ 811 }; 812 813 /* 814 * Caller doesn't want file data in the send stream, even if the 815 * search of clone sources doesn't find an extent. UPDATE_EXTENT 816 * commands will be sent instead of WRITE commands. 817 */ 818 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 819 820 /* 821 * Do not add the leading stream header. Used when multiple snapshots 822 * are sent back to back. 823 */ 824 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 825 826 /* 827 * Omit the command at the end of the stream that indicated the end 828 * of the stream. This option is used when multiple snapshots are 829 * sent back to back. 830 */ 831 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 832 833 /* 834 * Read the protocol version in the structure 835 */ 836 #define BTRFS_SEND_FLAG_VERSION 0x8 837 838 /* 839 * Send compressed data using the ENCODED_WRITE command instead of decompressing 840 * the data and sending it with the WRITE command. This requires protocol 841 * version >= 2. 842 */ 843 #define BTRFS_SEND_FLAG_COMPRESSED 0x10 844 845 #define BTRFS_SEND_FLAG_MASK \ 846 (BTRFS_SEND_FLAG_NO_FILE_DATA | \ 847 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ 848 BTRFS_SEND_FLAG_OMIT_END_CMD | \ 849 BTRFS_SEND_FLAG_VERSION | \ 850 BTRFS_SEND_FLAG_COMPRESSED) 851 852 struct btrfs_ioctl_send_args { 853 __s64 send_fd; /* in */ 854 __u64 clone_sources_count; /* in */ 855 __u64 __user *clone_sources; /* in */ 856 __u64 parent_root; /* in */ 857 __u64 flags; /* in */ 858 __u32 version; /* in */ 859 __u8 reserved[28]; /* in */ 860 }; 861 862 /* 863 * Information about a fs tree root. 864 * 865 * All items are filled by the ioctl 866 */ 867 struct btrfs_ioctl_get_subvol_info_args { 868 /* Id of this subvolume */ 869 __u64 treeid; 870 871 /* Name of this subvolume, used to get the real name at mount point */ 872 char name[BTRFS_VOL_NAME_MAX + 1]; 873 874 /* 875 * Id of the subvolume which contains this subvolume. 876 * Zero for top-level subvolume or a deleted subvolume. 877 */ 878 __u64 parent_id; 879 880 /* 881 * Inode number of the directory which contains this subvolume. 882 * Zero for top-level subvolume or a deleted subvolume 883 */ 884 __u64 dirid; 885 886 /* Latest transaction id of this subvolume */ 887 __u64 generation; 888 889 /* Flags of this subvolume */ 890 __u64 flags; 891 892 /* UUID of this subvolume */ 893 __u8 uuid[BTRFS_UUID_SIZE]; 894 895 /* 896 * UUID of the subvolume of which this subvolume is a snapshot. 897 * All zero for a non-snapshot subvolume. 898 */ 899 __u8 parent_uuid[BTRFS_UUID_SIZE]; 900 901 /* 902 * UUID of the subvolume from which this subvolume was received. 903 * All zero for non-received subvolume. 904 */ 905 __u8 received_uuid[BTRFS_UUID_SIZE]; 906 907 /* Transaction id indicating when change/create/send/receive happened */ 908 __u64 ctransid; 909 __u64 otransid; 910 __u64 stransid; 911 __u64 rtransid; 912 /* Time corresponding to c/o/s/rtransid */ 913 struct btrfs_ioctl_timespec ctime; 914 struct btrfs_ioctl_timespec otime; 915 struct btrfs_ioctl_timespec stime; 916 struct btrfs_ioctl_timespec rtime; 917 918 /* Must be zero */ 919 __u64 reserved[8]; 920 }; 921 922 #define BTRFS_MAX_ROOTREF_BUFFER_NUM 255 923 struct btrfs_ioctl_get_subvol_rootref_args { 924 /* in/out, minimum id of rootref's treeid to be searched */ 925 __u64 min_treeid; 926 927 /* out */ 928 struct { 929 __u64 treeid; 930 __u64 dirid; 931 } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM]; 932 933 /* out, number of found items */ 934 __u8 num_items; 935 __u8 align[7]; 936 }; 937 938 /* 939 * Data and metadata for an encoded read or write. 940 * 941 * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g., 942 * compression). This can be used to read the compressed contents of a file or 943 * write pre-compressed data directly to a file. 944 * 945 * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially 946 * preadv/pwritev with additional metadata about how the data is encoded and the 947 * size of the unencoded data. 948 * 949 * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills 950 * the metadata fields, and returns the size of the encoded data. It reads one 951 * extent per call. It can also read data which is not encoded. 952 * 953 * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data 954 * from the iovecs, and returns the size of the encoded data. Note that the 955 * encoded data is not validated when it is written; if it is not valid (e.g., 956 * it cannot be decompressed), then a subsequent read may return an error. 957 * 958 * Since the filesystem page cache contains decoded data, encoded I/O bypasses 959 * the page cache. Encoded I/O requires CAP_SYS_ADMIN. 960 */ 961 struct btrfs_ioctl_encoded_io_args { 962 /* Input parameters for both reads and writes. */ 963 964 /* 965 * iovecs containing encoded data. 966 * 967 * For reads, if the size of the encoded data is larger than the sum of 968 * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with 969 * ENOBUFS. 970 * 971 * For writes, the size of the encoded data is the sum of iov[n].iov_len 972 * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may 973 * increase in the future). This must also be less than or equal to 974 * unencoded_len. 975 */ 976 const struct iovec __user *iov; 977 /* Number of iovecs. */ 978 unsigned long iovcnt; 979 /* 980 * Offset in file. 981 * 982 * For writes, must be aligned to the sector size of the filesystem. 983 */ 984 __s64 offset; 985 /* Currently must be zero. */ 986 __u64 flags; 987 988 /* 989 * For reads, the following members are output parameters that will 990 * contain the returned metadata for the encoded data. 991 * For writes, the following members must be set to the metadata for the 992 * encoded data. 993 */ 994 995 /* 996 * Length of the data in the file. 997 * 998 * Must be less than or equal to unencoded_len - unencoded_offset. For 999 * writes, must be aligned to the sector size of the filesystem unless 1000 * the data ends at or beyond the current end of the file. 1001 */ 1002 __u64 len; 1003 /* 1004 * Length of the unencoded (i.e., decrypted and decompressed) data. 1005 * 1006 * For writes, must be no more than 128 KiB (this limit may increase in 1007 * the future). If the unencoded data is actually longer than 1008 * unencoded_len, then it is truncated; if it is shorter, then it is 1009 * extended with zeroes. 1010 */ 1011 __u64 unencoded_len; 1012 /* 1013 * Offset from the first byte of the unencoded data to the first byte of 1014 * logical data in the file. 1015 * 1016 * Must be less than unencoded_len. 1017 */ 1018 __u64 unencoded_offset; 1019 /* 1020 * BTRFS_ENCODED_IO_COMPRESSION_* type. 1021 * 1022 * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE. 1023 */ 1024 __u32 compression; 1025 /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */ 1026 __u32 encryption; 1027 /* 1028 * Reserved for future expansion. 1029 * 1030 * For reads, always returned as zero. Users should check for non-zero 1031 * bytes. If there are any, then the kernel has a newer version of this 1032 * structure with additional information that the user definition is 1033 * missing. 1034 * 1035 * For writes, must be zeroed. 1036 */ 1037 __u8 reserved[64]; 1038 }; 1039 1040 /* Data is not compressed. */ 1041 #define BTRFS_ENCODED_IO_COMPRESSION_NONE 0 1042 /* Data is compressed as a single zlib stream. */ 1043 #define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1 1044 /* 1045 * Data is compressed as a single zstd frame with the windowLog compression 1046 * parameter set to no more than 17. 1047 */ 1048 #define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2 1049 /* 1050 * Data is compressed sector by sector (using the sector size indicated by the 1051 * name of the constant) with LZO1X and wrapped in the format documented in 1052 * fs/btrfs/lzo.c. For writes, the compression sector size must match the 1053 * filesystem sector size. 1054 */ 1055 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3 1056 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4 1057 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5 1058 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6 1059 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7 1060 #define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8 1061 1062 /* Data is not encrypted. */ 1063 #define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0 1064 #define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1 1065 1066 /* 1067 * Wait for subvolume cleaning process. This queries the kernel queue and it 1068 * can change between the calls. 1069 * 1070 * - FOR_ONE - specify the subvolid 1071 * - FOR_QUEUED - wait for all currently queued 1072 * - COUNT - count number of queued 1073 * - PEEK_FIRST - read which is the first in the queue (to be cleaned or being 1074 * cleaned already), or 0 if the queue is empty 1075 * - PEEK_LAST - read the last subvolid in the queue, or 0 if the queue is empty 1076 */ 1077 struct btrfs_ioctl_subvol_wait { 1078 __u64 subvolid; 1079 __u32 mode; 1080 __u32 count; 1081 }; 1082 1083 #define BTRFS_SUBVOL_SYNC_WAIT_FOR_ONE (0) 1084 #define BTRFS_SUBVOL_SYNC_WAIT_FOR_QUEUED (1) 1085 #define BTRFS_SUBVOL_SYNC_COUNT (2) 1086 #define BTRFS_SUBVOL_SYNC_PEEK_FIRST (3) 1087 #define BTRFS_SUBVOL_SYNC_PEEK_LAST (4) 1088 1089 /* Error codes as returned by the kernel */ 1090 enum btrfs_err_code { 1091 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, 1092 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, 1093 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, 1094 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, 1095 BTRFS_ERROR_DEV_TGT_REPLACE, 1096 BTRFS_ERROR_DEV_MISSING_NOT_FOUND, 1097 BTRFS_ERROR_DEV_ONLY_WRITABLE, 1098 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS, 1099 BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET, 1100 BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET, 1101 }; 1102 1103 /* Flags for IOC_SHUTDOWN, must match XFS_FSOP_GOING_FLAGS_* flags. */ 1104 #define BTRFS_SHUTDOWN_FLAGS_DEFAULT 0x0 1105 #define BTRFS_SHUTDOWN_FLAGS_LOGFLUSH 0x1 1106 #define BTRFS_SHUTDOWN_FLAGS_NOLOGFLUSH 0x2 1107 #define BTRFS_SHUTDOWN_FLAGS_LAST 0x3 1108 1109 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ 1110 struct btrfs_ioctl_vol_args) 1111 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ 1112 struct btrfs_ioctl_vol_args) 1113 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ 1114 struct btrfs_ioctl_vol_args) 1115 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ 1116 struct btrfs_ioctl_vol_args) 1117 #define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \ 1118 struct btrfs_ioctl_vol_args) 1119 /* trans start and trans end are dangerous, and only for 1120 * use by applications that know how to avoid the 1121 * resulting deadlocks 1122 */ 1123 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) 1124 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) 1125 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) 1126 1127 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) 1128 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ 1129 struct btrfs_ioctl_vol_args) 1130 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ 1131 struct btrfs_ioctl_vol_args) 1132 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ 1133 struct btrfs_ioctl_vol_args) 1134 1135 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ 1136 struct btrfs_ioctl_clone_range_args) 1137 1138 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ 1139 struct btrfs_ioctl_vol_args) 1140 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ 1141 struct btrfs_ioctl_vol_args) 1142 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ 1143 struct btrfs_ioctl_defrag_range_args) 1144 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1145 struct btrfs_ioctl_search_args) 1146 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1147 struct btrfs_ioctl_search_args_v2) 1148 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ 1149 struct btrfs_ioctl_ino_lookup_args) 1150 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) 1151 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ 1152 struct btrfs_ioctl_space_args) 1153 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) 1154 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) 1155 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ 1156 struct btrfs_ioctl_vol_args_v2) 1157 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ 1158 struct btrfs_ioctl_vol_args_v2) 1159 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) 1160 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) 1161 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ 1162 struct btrfs_ioctl_scrub_args) 1163 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) 1164 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ 1165 struct btrfs_ioctl_scrub_args) 1166 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ 1167 struct btrfs_ioctl_dev_info_args) 1168 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ 1169 struct btrfs_ioctl_fs_info_args) 1170 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ 1171 struct btrfs_ioctl_balance_args) 1172 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) 1173 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ 1174 struct btrfs_ioctl_balance_args) 1175 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ 1176 struct btrfs_ioctl_ino_path_args) 1177 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ 1178 struct btrfs_ioctl_logical_ino_args) 1179 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ 1180 struct btrfs_ioctl_received_subvol_args) 1181 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) 1182 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ 1183 struct btrfs_ioctl_vol_args) 1184 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ 1185 struct btrfs_ioctl_quota_ctl_args) 1186 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ 1187 struct btrfs_ioctl_qgroup_assign_args) 1188 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ 1189 struct btrfs_ioctl_qgroup_create_args) 1190 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ 1191 struct btrfs_ioctl_qgroup_limit_args) 1192 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ 1193 struct btrfs_ioctl_quota_rescan_args) 1194 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ 1195 struct btrfs_ioctl_quota_rescan_args) 1196 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) 1197 #define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL 1198 #define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL 1199 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ 1200 struct btrfs_ioctl_get_dev_stats) 1201 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ 1202 struct btrfs_ioctl_dev_replace_args) 1203 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ 1204 struct btrfs_ioctl_same_args) 1205 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1206 struct btrfs_ioctl_feature_flags) 1207 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 1208 struct btrfs_ioctl_feature_flags[2]) 1209 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1210 struct btrfs_ioctl_feature_flags[3]) 1211 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ 1212 struct btrfs_ioctl_vol_args_v2) 1213 #define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ 1214 struct btrfs_ioctl_logical_ino_args) 1215 #define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \ 1216 struct btrfs_ioctl_get_subvol_info_args) 1217 #define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \ 1218 struct btrfs_ioctl_get_subvol_rootref_args) 1219 #define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \ 1220 struct btrfs_ioctl_ino_lookup_user_args) 1221 #define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \ 1222 struct btrfs_ioctl_vol_args_v2) 1223 #define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \ 1224 struct btrfs_ioctl_encoded_io_args) 1225 #define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ 1226 struct btrfs_ioctl_encoded_io_args) 1227 #define BTRFS_IOC_SUBVOL_SYNC_WAIT _IOW(BTRFS_IOCTL_MAGIC, 65, \ 1228 struct btrfs_ioctl_subvol_wait) 1229 1230 /* Shutdown ioctl should follow XFS's interfaces, thus not using btrfs magic. */ 1231 #define BTRFS_IOC_SHUTDOWN _IOR('X', 125, __u32) 1232 1233 #ifdef __cplusplus 1234 } 1235 #endif 1236 1237 #endif /* _UAPI_LINUX_BTRFS_H */ 1238