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