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The C and C++ Include Header Files
/usr/include/linux/btrfs.h
$ cat -n /usr/include/linux/btrfs.h 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 _LINUX_BTRFS_H 21 #define _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 /* Deprecated since 5.7 */ 46 # define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) 47 #define BTRFS_SUBVOL_RDONLY (1ULL << 1) 48 #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) 49 50 #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) 51 52 #define BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4) 53 54 #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ 55 (BTRFS_SUBVOL_RDONLY | \ 56 BTRFS_SUBVOL_QGROUP_INHERIT | \ 57 BTRFS_DEVICE_SPEC_BY_ID | \ 58 BTRFS_SUBVOL_SPEC_BY_ID) 59 60 #define BTRFS_FSID_SIZE 16 61 #define BTRFS_UUID_SIZE 16 62 #define BTRFS_UUID_UNPARSED_SIZE 37 63 64 /* 65 * flags definition for qgroup limits 66 * 67 * Used by: 68 * struct btrfs_qgroup_limit.flags 69 * struct btrfs_qgroup_limit_item.flags 70 */ 71 #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) 72 #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) 73 #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) 74 #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) 75 #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) 76 #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) 77 78 struct btrfs_qgroup_limit { 79 __u64 flags; 80 __u64 max_rfer; 81 __u64 max_excl; 82 __u64 rsv_rfer; 83 __u64 rsv_excl; 84 }; 85 86 /* 87 * flags definition for qgroup inheritance 88 * 89 * Used by: 90 * struct btrfs_qgroup_inherit.flags 91 */ 92 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) 93 #define BTRFS_QGROUP_INHERIT_FLAGS_SUPP (BTRFS_QGROUP_INHERIT_SET_LIMITS) 94 95 struct btrfs_qgroup_inherit { 96 __u64 flags; 97 __u64 num_qgroups; 98 __u64 num_ref_copies; 99 __u64 num_excl_copies; 100 struct btrfs_qgroup_limit lim; 101 __u64 qgroups[]; 102 }; 103 104 struct btrfs_ioctl_qgroup_limit_args { 105 __u64 qgroupid; 106 struct btrfs_qgroup_limit lim; 107 }; 108 109 /* 110 * Arguments for specification of subvolumes or devices, supporting by-name or 111 * by-id and flags 112 * 113 * The set of supported flags depends on the ioctl 114 * 115 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: 116 * - BTRFS_IOC_SUBVOL_GETFLAGS 117 * - BTRFS_IOC_SUBVOL_SETFLAGS 118 */ 119 120 /* Supported flags for BTRFS_IOC_RM_DEV_V2 */ 121 #define BTRFS_DEVICE_REMOVE_ARGS_MASK \ 122 (BTRFS_DEVICE_SPEC_BY_ID) 123 124 /* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */ 125 #define BTRFS_SUBVOL_CREATE_ARGS_MASK \ 126 (BTRFS_SUBVOL_RDONLY | \ 127 BTRFS_SUBVOL_QGROUP_INHERIT) 128 129 /* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */ 130 #define BTRFS_SUBVOL_DELETE_ARGS_MASK \ 131 (BTRFS_SUBVOL_SPEC_BY_ID) 132 133 struct btrfs_ioctl_vol_args_v2 { 134 __s64 fd; 135 __u64 transid; 136 __u64 flags; 137 union { 138 struct { 139 __u64 size; 140 struct btrfs_qgroup_inherit *qgroup_inherit; 141 }; 142 __u64 unused[4]; 143 }; 144 union { 145 char name[BTRFS_SUBVOL_NAME_MAX + 1]; 146 __u64 devid; 147 __u64 subvolid; 148 }; 149 }; 150 151 /* 152 * structure to report errors and progress to userspace, either as a 153 * result of a finished scrub, a canceled scrub or a progress inquiry 154 */ 155 struct btrfs_scrub_progress { 156 __u64 data_extents_scrubbed; /* # of data extents scrubbed */ 157 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ 158 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ 159 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ 160 __u64 read_errors; /* # of read errors encountered (EIO) */ 161 __u64 csum_errors; /* # of failed csum checks */ 162 __u64 verify_errors; /* # of occurrences, where the metadata 163 * of a tree block did not match the 164 * expected values, like generation or 165 * logical */ 166 __u64 no_csum; /* # of 4k data block for which no csum 167 * is present, probably the result of 168 * data written with nodatasum */ 169 __u64 csum_discards; /* # of csum for which no data was found 170 * in the extent tree. */ 171 __u64 super_errors; /* # of bad super blocks encountered */ 172 __u64 malloc_errors; /* # of internal kmalloc errors. These 173 * will likely cause an incomplete 174 * scrub */ 175 __u64 uncorrectable_errors; /* # of errors where either no intact 176 * copy was found or the writeback 177 * failed */ 178 __u64 corrected_errors; /* # of errors corrected */ 179 __u64 last_physical; /* last physical address scrubbed. In 180 * case a scrub was aborted, this can 181 * be used to restart the scrub */ 182 __u64 unverified_errors; /* # of occurrences where a read for a 183 * full (64k) bio failed, but the re- 184 * check succeeded for each 4k piece. 185 * Intermittent error. */ 186 }; 187 188 #define BTRFS_SCRUB_READONLY 1 189 #define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY) 190 struct btrfs_ioctl_scrub_args { 191 __u64 devid; /* in */ 192 __u64 start; /* in */ 193 __u64 end; /* in */ 194 __u64 flags; /* in */ 195 struct btrfs_scrub_progress progress; /* out */ 196 /* pad to 1k */ 197 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; 198 }; 199 200 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 201 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 202 struct btrfs_ioctl_dev_replace_start_params { 203 __u64 srcdevid; /* in, if 0, use srcdev_name instead */ 204 __u64 cont_reading_from_srcdev_mode; /* in, see #define 205 * above */ 206 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 207 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 208 }; 209 210 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 211 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 212 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 213 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 214 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 215 struct btrfs_ioctl_dev_replace_status_params { 216 __u64 replace_state; /* out, see #define above */ 217 __u64 progress_1000; /* out, 0 <= x <= 1000 */ 218 __u64 time_started; /* out, seconds since 1-Jan-1970 */ 219 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ 220 __u64 num_write_errors; /* out */ 221 __u64 num_uncorrectable_read_errors; /* out */ 222 }; 223 224 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 225 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 226 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 227 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 228 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 229 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 230 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 231 struct btrfs_ioctl_dev_replace_args { 232 __u64 cmd; /* in */ 233 __u64 result; /* out */ 234 235 union { 236 struct btrfs_ioctl_dev_replace_start_params start; 237 struct btrfs_ioctl_dev_replace_status_params status; 238 }; /* in/out */ 239 240 __u64 spare[64]; 241 }; 242 243 struct btrfs_ioctl_dev_info_args { 244 __u64 devid; /* in/out */ 245 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ 246 __u64 bytes_used; /* out */ 247 __u64 total_bytes; /* out */ 248 /* 249 * Optional, out. 250 * 251 * Showing the fsid of the device, allowing user space to check if this 252 * device is a seeding one. 253 * 254 * Introduced in v6.3, thus user space still needs to check if kernel 255 * changed this value. Older kernel will not touch the values here. 256 */ 257 __u8 fsid[BTRFS_UUID_SIZE]; 258 __u64 unused[377]; /* pad to 4k */ 259 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ 260 }; 261 262 /* 263 * Retrieve information about the filesystem 264 */ 265 266 /* Request information about checksum type and size */ 267 #define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0) 268 269 /* Request information about filesystem generation */ 270 #define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1) 271 /* Request information about filesystem metadata UUID */ 272 #define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2) 273 274 struct btrfs_ioctl_fs_info_args { 275 __u64 max_id; /* out */ 276 __u64 num_devices; /* out */ 277 __u8 fsid[BTRFS_FSID_SIZE]; /* out */ 278 __u32 nodesize; /* out */ 279 __u32 sectorsize; /* out */ 280 __u32 clone_alignment; /* out */ 281 /* See BTRFS_FS_INFO_FLAG_* */ 282 __u16 csum_type; /* out */ 283 __u16 csum_size; /* out */ 284 __u64 flags; /* in/out */ 285 __u64 generation; /* out */ 286 __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */ 287 __u8 reserved[944]; /* pad to 1k */ 288 }; 289 290 /* 291 * feature flags 292 * 293 * Used by: 294 * struct btrfs_ioctl_feature_flags 295 */ 296 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) 297 /* 298 * Older kernels (< 4.9) on big-endian systems produced broken free space tree 299 * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions 300 * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted. 301 * btrfs-progs can also intentionally clear this bit to ask the kernel to 302 * rebuild the free space tree, however this might not work on older kernels 303 * that do not know about this bit. If not sure, clear the cache manually on 304 * first mount when booting older kernel versions. 305 */ 306 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1) 307 #define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2) 308 309 /* 310 * Put all block group items into a dedicated block group tree, greatly 311 * reducing mount time for large filesystem due to better locality. 312 */ 313 #define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE (1ULL << 3) 314 315 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) 316 #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) 317 #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) 318 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) 319 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4) 320 321 /* 322 * older kernels tried to do bigger metadata blocks, but the 323 * code was pretty buggy. Lets not let them try anymore. 324 */ 325 #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) 326 327 #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) 328 #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) 329 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) 330 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) 331 #define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10) 332 #define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11) 333 #define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12) 334 #define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13) 335 #define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14) 336 #define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA (1ULL << 16) 337 338 struct btrfs_ioctl_feature_flags { 339 __u64 compat_flags; 340 __u64 compat_ro_flags; 341 __u64 incompat_flags; 342 }; 343 344 /* balance control ioctl modes */ 345 #define BTRFS_BALANCE_CTL_PAUSE 1 346 #define BTRFS_BALANCE_CTL_CANCEL 2 347 348 /* 349 * this is packed, because it should be exactly the same as its disk 350 * byte order counterpart (struct btrfs_disk_balance_args) 351 */ 352 struct btrfs_balance_args { 353 __u64 profiles; 354 355 /* 356 * usage filter 357 * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N' 358 * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max 359 */ 360 union { 361 __u64 usage; 362 struct { 363 __u32 usage_min; 364 __u32 usage_max; 365 }; 366 }; 367 __u64 devid; 368 __u64 pstart; 369 __u64 pend; 370 __u64 vstart; 371 __u64 vend; 372 373 __u64 target; 374 375 __u64 flags; 376 377 /* 378 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' 379 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum 380 * and maximum 381 */ 382 union { 383 __u64 limit; /* limit number of processed chunks */ 384 struct { 385 __u32 limit_min; 386 __u32 limit_max; 387 }; 388 }; 389 390 /* 391 * Process chunks that cross stripes_min..stripes_max devices, 392 * BTRFS_BALANCE_ARGS_STRIPES_RANGE 393 */ 394 __u32 stripes_min; 395 __u32 stripes_max; 396 397 __u64 unused[6]; 398 } __attribute__ ((__packed__)); 399 400 /* report balance progress to userspace */ 401 struct btrfs_balance_progress { 402 __u64 expected; /* estimated # of chunks that will be 403 * relocated to fulfill the request */ 404 __u64 considered; /* # of chunks we have considered so far */ 405 __u64 completed; /* # of chunks relocated so far */ 406 }; 407 408 /* 409 * flags definition for balance 410 * 411 * Restriper's general type filter 412 * 413 * Used by: 414 * btrfs_ioctl_balance_args.flags 415 * btrfs_balance_control.flags (internal) 416 */ 417 #define BTRFS_BALANCE_DATA (1ULL << 0) 418 #define BTRFS_BALANCE_SYSTEM (1ULL << 1) 419 #define BTRFS_BALANCE_METADATA (1ULL << 2) 420 421 #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ 422 BTRFS_BALANCE_SYSTEM | \ 423 BTRFS_BALANCE_METADATA) 424 425 #define BTRFS_BALANCE_FORCE (1ULL << 3) 426 #define BTRFS_BALANCE_RESUME (1ULL << 4) 427 428 /* 429 * flags definitions for per-type balance args 430 * 431 * Balance filters 432 * 433 * Used by: 434 * struct btrfs_balance_args 435 */ 436 #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) 437 #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) 438 #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) 439 #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) 440 #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) 441 #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) 442 #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) 443 #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) 444 #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) 445 446 #define BTRFS_BALANCE_ARGS_MASK \ 447 (BTRFS_BALANCE_ARGS_PROFILES | \ 448 BTRFS_BALANCE_ARGS_USAGE | \ 449 BTRFS_BALANCE_ARGS_DEVID | \ 450 BTRFS_BALANCE_ARGS_DRANGE | \ 451 BTRFS_BALANCE_ARGS_VRANGE | \ 452 BTRFS_BALANCE_ARGS_LIMIT | \ 453 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ 454 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ 455 BTRFS_BALANCE_ARGS_USAGE_RANGE) 456 457 /* 458 * Profile changing flags. When SOFT is set we won't relocate chunk if 459 * it already has the target profile (even though it may be 460 * half-filled). 461 */ 462 #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) 463 #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) 464 465 466 /* 467 * flags definition for balance state 468 * 469 * Used by: 470 * struct btrfs_ioctl_balance_args.state 471 */ 472 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) 473 #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) 474 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) 475 476 struct btrfs_ioctl_balance_args { 477 __u64 flags; /* in/out */ 478 __u64 state; /* out */ 479 480 struct btrfs_balance_args data; /* in/out */ 481 struct btrfs_balance_args meta; /* in/out */ 482 struct btrfs_balance_args sys; /* in/out */ 483 484 struct btrfs_balance_progress stat; /* out */ 485 486 __u64 unused[72]; /* pad to 1k */ 487 }; 488 489 #define BTRFS_INO_LOOKUP_PATH_MAX 4080 490 struct btrfs_ioctl_ino_lookup_args { 491 __u64 treeid; 492 __u64 objectid; 493 char name[BTRFS_INO_LOOKUP_PATH_MAX]; 494 }; 495 496 #define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1) 497 struct btrfs_ioctl_ino_lookup_user_args { 498 /* in, inode number containing the subvolume of 'subvolid' */ 499 __u64 dirid; 500 /* in */ 501 __u64 treeid; 502 /* out, name of the subvolume of 'treeid' */ 503 char name[BTRFS_VOL_NAME_MAX + 1]; 504 /* 505 * out, constructed path from the directory with which the ioctl is 506 * called to dirid 507 */ 508 char path[BTRFS_INO_LOOKUP_USER_PATH_MAX]; 509 }; 510 511 /* Search criteria for the btrfs SEARCH ioctl family. */ 512 struct btrfs_ioctl_search_key { 513 /* 514 * The tree we're searching in. 1 is the tree of tree roots, 2 is the 515 * extent tree, etc... 516 * 517 * A special tree_id value of 0 will cause a search in the subvolume 518 * tree that the inode which is passed to the ioctl is part of. 519 */ 520 __u64 tree_id; /* in */ 521 522 /* 523 * When doing a tree search, we're actually taking a slice from a 524 * linear search space of 136-bit keys. 525 * 526 * A full 136-bit tree key is composed as: 527 * (objectid << 72) + (type << 64) + offset 528 * 529 * The individual min and max values for objectid, type and offset 530 * define the min_key and max_key values for the search range. All 531 * metadata items with a key in the interval [min_key, max_key] will be 532 * returned. 533 * 534 * Additionally, we can filter the items returned on transaction id of 535 * the metadata block they're stored in by specifying a transid range. 536 * Be aware that this transaction id only denotes when the metadata 537 * page that currently contains the item got written the last time as 538 * result of a COW operation. The number does not have any meaning 539 * related to the transaction in which an individual item that is being 540 * returned was created or changed. 541 */ 542 __u64 min_objectid; /* in */ 543 __u64 max_objectid; /* in */ 544 __u64 min_offset; /* in */ 545 __u64 max_offset; /* in */ 546 __u64 min_transid; /* in */ 547 __u64 max_transid; /* in */ 548 __u32 min_type; /* in */ 549 __u32 max_type; /* in */ 550 551 /* 552 * input: The maximum amount of results desired. 553 * output: The actual amount of items returned, restricted by any of: 554 * - reaching the upper bound of the search range 555 * - reaching the input nr_items amount of items 556 * - completely filling the supplied memory buffer 557 */ 558 __u32 nr_items; /* in/out */ 559 560 /* align to 64 bits */ 561 __u32 unused; 562 563 /* some extra for later */ 564 __u64 unused1; 565 __u64 unused2; 566 __u64 unused3; 567 __u64 unused4; 568 }; 569 570 struct btrfs_ioctl_search_header { 571 __u64 transid; 572 __u64 objectid; 573 __u64 offset; 574 __u32 type; 575 __u32 len; 576 } __attribute__ ((__may_alias__)); 577 578 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) 579 /* 580 * the buf is an array of search headers where 581 * each header is followed by the actual item 582 * the type field is expanded to 32 bits for alignment 583 */ 584 struct btrfs_ioctl_search_args { 585 struct btrfs_ioctl_search_key key; 586 char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; 587 }; 588 589 /* 590 * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes. 591 * The allocated size of the buffer is set in buf_size. 592 */ 593 struct btrfs_ioctl_search_args_v2 { 594 struct btrfs_ioctl_search_key key; /* in/out - search parameters */ 595 __u64 buf_size; /* in - size of buffer 596 * out - on EOVERFLOW: needed size 597 * to store item */ 598 __u64 buf[]; /* out - found items */ 599 }; 600 601 /* With a @src_length of zero, the range from @src_offset->EOF is cloned! */ 602 struct btrfs_ioctl_clone_range_args { 603 __s64 src_fd; 604 __u64 src_offset, src_length; 605 __u64 dest_offset; 606 }; 607 608 /* 609 * flags definition for the defrag range ioctl 610 * 611 * Used by: 612 * struct btrfs_ioctl_defrag_range_args.flags 613 */ 614 #define BTRFS_DEFRAG_RANGE_COMPRESS 1 615 #define BTRFS_DEFRAG_RANGE_START_IO 2 616 #define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \ 617 BTRFS_DEFRAG_RANGE_START_IO) 618 619 struct btrfs_ioctl_defrag_range_args { 620 /* start of the defrag operation */ 621 __u64 start; 622 623 /* number of bytes to defrag, use (u64)-1 to say all */ 624 __u64 len; 625 626 /* 627 * flags for the operation, which can include turning 628 * on compression for this one defrag 629 */ 630 __u64 flags; 631 632 /* 633 * any extent bigger than this will be considered 634 * already defragged. Use 0 to take the kernel default 635 * Use 1 to say every single extent must be rewritten 636 */ 637 __u32 extent_thresh; 638 639 /* 640 * which compression method to use if turning on compression 641 * for this defrag operation. If unspecified, zlib will 642 * be used 643 */ 644 __u32 compress_type; 645 646 /* spare for later */ 647 __u32 unused[4]; 648 }; 649 650 651 #define BTRFS_SAME_DATA_DIFFERS 1 652 /* For extent-same ioctl */ 653 struct btrfs_ioctl_same_extent_info { 654 __s64 fd; /* in - destination file */ 655 __u64 logical_offset; /* in - start of extent in destination */ 656 __u64 bytes_deduped; /* out - total # of bytes we were able 657 * to dedupe from this file */ 658 /* status of this dedupe operation: 659 * 0 if dedup succeeds 660 * < 0 for error 661 * == BTRFS_SAME_DATA_DIFFERS if data differs 662 */ 663 __s32 status; /* out - see above description */ 664 __u32 reserved; 665 }; 666 667 struct btrfs_ioctl_same_args { 668 __u64 logical_offset; /* in - start of extent in source */ 669 __u64 length; /* in - length of extent */ 670 __u16 dest_count; /* in - total elements in info array */ 671 __u16 reserved1; 672 __u32 reserved2; 673 struct btrfs_ioctl_same_extent_info info[]; 674 }; 675 676 struct btrfs_ioctl_space_info { 677 __u64 flags; 678 __u64 total_bytes; 679 __u64 used_bytes; 680 }; 681 682 struct btrfs_ioctl_space_args { 683 __u64 space_slots; 684 __u64 total_spaces; 685 struct btrfs_ioctl_space_info spaces[]; 686 }; 687 688 struct btrfs_data_container { 689 __u32 bytes_left; /* out -- bytes not needed to deliver output */ 690 __u32 bytes_missing; /* out -- additional bytes needed for result */ 691 __u32 elem_cnt; /* out */ 692 __u32 elem_missed; /* out */ 693 __u64 val[]; /* out */ 694 }; 695 696 struct btrfs_ioctl_ino_path_args { 697 __u64 inum; /* in */ 698 __u64 size; /* in */ 699 __u64 reserved[4]; 700 /* struct btrfs_data_container *fspath; out */ 701 __u64 fspath; /* out */ 702 }; 703 704 struct btrfs_ioctl_logical_ino_args { 705 __u64 logical; /* in */ 706 __u64 size; /* in */ 707 __u64 reserved[3]; /* must be 0 for now */ 708 __u64 flags; /* in, v2 only */ 709 /* struct btrfs_data_container *inodes; out */ 710 __u64 inodes; 711 }; 712 713 /* 714 * Return every ref to the extent, not just those containing logical block. 715 * Requires logical == extent bytenr. 716 */ 717 #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) 718 719 enum btrfs_dev_stat_values { 720 /* disk I/O failure stats */ 721 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ 722 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ 723 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ 724 725 /* stats for indirect indications for I/O failures */ 726 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or 727 * contents is illegal: this is an 728 * indication that the block was damaged 729 * during read or write, or written to 730 * wrong location or read from wrong 731 * location */ 732 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not 733 * been written */ 734 735 BTRFS_DEV_STAT_VALUES_MAX 736 }; 737 738 /* Reset statistics after reading; needs SYS_ADMIN capability */ 739 #define BTRFS_DEV_STATS_RESET (1ULL << 0) 740 741 struct btrfs_ioctl_get_dev_stats { 742 __u64 devid; /* in */ 743 __u64 nr_items; /* in/out */ 744 __u64 flags; /* in/out */ 745 746 /* out values: */ 747 __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; 748 749 /* 750 * This pads the struct to 1032 bytes. It was originally meant to pad to 751 * 1024 bytes, but when adding the flags field, the padding calculation 752 * was not adjusted. 753 */ 754 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; 755 }; 756 757 #define BTRFS_QUOTA_CTL_ENABLE 1 758 #define BTRFS_QUOTA_CTL_DISABLE 2 759 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 760 #define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4 761 struct btrfs_ioctl_quota_ctl_args { 762 __u64 cmd; 763 __u64 status; 764 }; 765 766 struct btrfs_ioctl_quota_rescan_args { 767 __u64 flags; 768 __u64 progress; 769 __u64 reserved[6]; 770 }; 771 772 struct btrfs_ioctl_qgroup_assign_args { 773 __u64 assign; 774 __u64 src; 775 __u64 dst; 776 }; 777 778 struct btrfs_ioctl_qgroup_create_args { 779 __u64 create; 780 __u64 qgroupid; 781 }; 782 struct btrfs_ioctl_timespec { 783 __u64 sec; 784 __u32 nsec; 785 }; 786 787 struct btrfs_ioctl_received_subvol_args { 788 char uuid[BTRFS_UUID_SIZE]; /* in */ 789 __u64 stransid; /* in */ 790 __u64 rtransid; /* out */ 791 struct btrfs_ioctl_timespec stime; /* in */ 792 struct btrfs_ioctl_timespec rtime; /* out */ 793 __u64 flags; /* in */ 794 __u64 reserved[16]; /* in */ 795 }; 796 797 /* 798 * Caller doesn't want file data in the send stream, even if the 799 * search of clone sources doesn't find an extent. UPDATE_EXTENT 800 * commands will be sent instead of WRITE commands. 801 */ 802 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 803 804 /* 805 * Do not add the leading stream header. Used when multiple snapshots 806 * are sent back to back. 807 */ 808 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 809 810 /* 811 * Omit the command at the end of the stream that indicated the end 812 * of the stream. This option is used when multiple snapshots are 813 * sent back to back. 814 */ 815 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 816 817 /* 818 * Read the protocol version in the structure 819 */ 820 #define BTRFS_SEND_FLAG_VERSION 0x8 821 822 /* 823 * Send compressed data using the ENCODED_WRITE command instead of decompressing 824 * the data and sending it with the WRITE command. This requires protocol 825 * version >= 2. 826 */ 827 #define BTRFS_SEND_FLAG_COMPRESSED 0x10 828 829 #define BTRFS_SEND_FLAG_MASK \ 830 (BTRFS_SEND_FLAG_NO_FILE_DATA | \ 831 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ 832 BTRFS_SEND_FLAG_OMIT_END_CMD | \ 833 BTRFS_SEND_FLAG_VERSION | \ 834 BTRFS_SEND_FLAG_COMPRESSED) 835 836 struct btrfs_ioctl_send_args { 837 __s64 send_fd; /* in */ 838 __u64 clone_sources_count; /* in */ 839 __u64 *clone_sources; /* in */ 840 __u64 parent_root; /* in */ 841 __u64 flags; /* in */ 842 __u32 version; /* in */ 843 __u8 reserved[28]; /* in */ 844 }; 845 846 /* 847 * Information about a fs tree root. 848 * 849 * All items are filled by the ioctl 850 */ 851 struct btrfs_ioctl_get_subvol_info_args { 852 /* Id of this subvolume */ 853 __u64 treeid; 854 855 /* Name of this subvolume, used to get the real name at mount point */ 856 char name[BTRFS_VOL_NAME_MAX + 1]; 857 858 /* 859 * Id of the subvolume which contains this subvolume. 860 * Zero for top-level subvolume or a deleted subvolume. 861 */ 862 __u64 parent_id; 863 864 /* 865 * Inode number of the directory which contains this subvolume. 866 * Zero for top-level subvolume or a deleted subvolume 867 */ 868 __u64 dirid; 869 870 /* Latest transaction id of this subvolume */ 871 __u64 generation; 872 873 /* Flags of this subvolume */ 874 __u64 flags; 875 876 /* UUID of this subvolume */ 877 __u8 uuid[BTRFS_UUID_SIZE]; 878 879 /* 880 * UUID of the subvolume of which this subvolume is a snapshot. 881 * All zero for a non-snapshot subvolume. 882 */ 883 __u8 parent_uuid[BTRFS_UUID_SIZE]; 884 885 /* 886 * UUID of the subvolume from which this subvolume was received. 887 * All zero for non-received subvolume. 888 */ 889 __u8 received_uuid[BTRFS_UUID_SIZE]; 890 891 /* Transaction id indicating when change/create/send/receive happened */ 892 __u64 ctransid; 893 __u64 otransid; 894 __u64 stransid; 895 __u64 rtransid; 896 /* Time corresponding to c/o/s/rtransid */ 897 struct btrfs_ioctl_timespec ctime; 898 struct btrfs_ioctl_timespec otime; 899 struct btrfs_ioctl_timespec stime; 900 struct btrfs_ioctl_timespec rtime; 901 902 /* Must be zero */ 903 __u64 reserved[8]; 904 }; 905 906 #define BTRFS_MAX_ROOTREF_BUFFER_NUM 255 907 struct btrfs_ioctl_get_subvol_rootref_args { 908 /* in/out, minimum id of rootref's treeid to be searched */ 909 __u64 min_treeid; 910 911 /* out */ 912 struct { 913 __u64 treeid; 914 __u64 dirid; 915 } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM]; 916 917 /* out, number of found items */ 918 __u8 num_items; 919 __u8 align[7]; 920 }; 921 922 /* 923 * Data and metadata for an encoded read or write. 924 * 925 * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g., 926 * compression). This can be used to read the compressed contents of a file or 927 * write pre-compressed data directly to a file. 928 * 929 * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially 930 * preadv/pwritev with additional metadata about how the data is encoded and the 931 * size of the unencoded data. 932 * 933 * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills 934 * the metadata fields, and returns the size of the encoded data. It reads one 935 * extent per call. It can also read data which is not encoded. 936 * 937 * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data 938 * from the iovecs, and returns the size of the encoded data. Note that the 939 * encoded data is not validated when it is written; if it is not valid (e.g., 940 * it cannot be decompressed), then a subsequent read may return an error. 941 * 942 * Since the filesystem page cache contains decoded data, encoded I/O bypasses 943 * the page cache. Encoded I/O requires CAP_SYS_ADMIN. 944 */ 945 struct btrfs_ioctl_encoded_io_args { 946 /* Input parameters for both reads and writes. */ 947 948 /* 949 * iovecs containing encoded data. 950 * 951 * For reads, if the size of the encoded data is larger than the sum of 952 * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with 953 * ENOBUFS. 954 * 955 * For writes, the size of the encoded data is the sum of iov[n].iov_len 956 * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may 957 * increase in the future). This must also be less than or equal to 958 * unencoded_len. 959 */ 960 const struct iovec *iov; 961 /* Number of iovecs. */ 962 unsigned long iovcnt; 963 /* 964 * Offset in file. 965 * 966 * For writes, must be aligned to the sector size of the filesystem. 967 */ 968 __s64 offset; 969 /* Currently must be zero. */ 970 __u64 flags; 971 972 /* 973 * For reads, the following members are output parameters that will 974 * contain the returned metadata for the encoded data. 975 * For writes, the following members must be set to the metadata for the 976 * encoded data. 977 */ 978 979 /* 980 * Length of the data in the file. 981 * 982 * Must be less than or equal to unencoded_len - unencoded_offset. For 983 * writes, must be aligned to the sector size of the filesystem unless 984 * the data ends at or beyond the current end of the file. 985 */ 986 __u64 len; 987 /* 988 * Length of the unencoded (i.e., decrypted and decompressed) data. 989 * 990 * For writes, must be no more than 128 KiB (this limit may increase in 991 * the future). If the unencoded data is actually longer than 992 * unencoded_len, then it is truncated; if it is shorter, then it is 993 * extended with zeroes. 994 */ 995 __u64 unencoded_len; 996 /* 997 * Offset from the first byte of the unencoded data to the first byte of 998 * logical data in the file. 999 * 1000 * Must be less than unencoded_len. 1001 */ 1002 __u64 unencoded_offset; 1003 /* 1004 * BTRFS_ENCODED_IO_COMPRESSION_* type. 1005 * 1006 * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE. 1007 */ 1008 __u32 compression; 1009 /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */ 1010 __u32 encryption; 1011 /* 1012 * Reserved for future expansion. 1013 * 1014 * For reads, always returned as zero. Users should check for non-zero 1015 * bytes. If there are any, then the kernel has a newer version of this 1016 * structure with additional information that the user definition is 1017 * missing. 1018 * 1019 * For writes, must be zeroed. 1020 */ 1021 __u8 reserved[64]; 1022 }; 1023 1024 /* Data is not compressed. */ 1025 #define BTRFS_ENCODED_IO_COMPRESSION_NONE 0 1026 /* Data is compressed as a single zlib stream. */ 1027 #define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1 1028 /* 1029 * Data is compressed as a single zstd frame with the windowLog compression 1030 * parameter set to no more than 17. 1031 */ 1032 #define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2 1033 /* 1034 * Data is compressed sector by sector (using the sector size indicated by the 1035 * name of the constant) with LZO1X and wrapped in the format documented in 1036 * fs/btrfs/lzo.c. For writes, the compression sector size must match the 1037 * filesystem sector size. 1038 */ 1039 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3 1040 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4 1041 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5 1042 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6 1043 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7 1044 #define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8 1045 1046 /* Data is not encrypted. */ 1047 #define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0 1048 #define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1 1049 1050 /* Error codes as returned by the kernel */ 1051 enum btrfs_err_code { 1052 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, 1053 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, 1054 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, 1055 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, 1056 BTRFS_ERROR_DEV_TGT_REPLACE, 1057 BTRFS_ERROR_DEV_MISSING_NOT_FOUND, 1058 BTRFS_ERROR_DEV_ONLY_WRITABLE, 1059 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS, 1060 BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET, 1061 BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET, 1062 }; 1063 1064 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ 1065 struct btrfs_ioctl_vol_args) 1066 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ 1067 struct btrfs_ioctl_vol_args) 1068 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ 1069 struct btrfs_ioctl_vol_args) 1070 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ 1071 struct btrfs_ioctl_vol_args) 1072 #define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \ 1073 struct btrfs_ioctl_vol_args) 1074 /* trans start and trans end are dangerous, and only for 1075 * use by applications that know how to avoid the 1076 * resulting deadlocks 1077 */ 1078 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) 1079 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) 1080 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) 1081 1082 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) 1083 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ 1084 struct btrfs_ioctl_vol_args) 1085 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ 1086 struct btrfs_ioctl_vol_args) 1087 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ 1088 struct btrfs_ioctl_vol_args) 1089 1090 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ 1091 struct btrfs_ioctl_clone_range_args) 1092 1093 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ 1094 struct btrfs_ioctl_vol_args) 1095 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ 1096 struct btrfs_ioctl_vol_args) 1097 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ 1098 struct btrfs_ioctl_defrag_range_args) 1099 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1100 struct btrfs_ioctl_search_args) 1101 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1102 struct btrfs_ioctl_search_args_v2) 1103 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ 1104 struct btrfs_ioctl_ino_lookup_args) 1105 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) 1106 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ 1107 struct btrfs_ioctl_space_args) 1108 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) 1109 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) 1110 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ 1111 struct btrfs_ioctl_vol_args_v2) 1112 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ 1113 struct btrfs_ioctl_vol_args_v2) 1114 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) 1115 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) 1116 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ 1117 struct btrfs_ioctl_scrub_args) 1118 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) 1119 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ 1120 struct btrfs_ioctl_scrub_args) 1121 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ 1122 struct btrfs_ioctl_dev_info_args) 1123 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ 1124 struct btrfs_ioctl_fs_info_args) 1125 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ 1126 struct btrfs_ioctl_balance_args) 1127 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) 1128 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ 1129 struct btrfs_ioctl_balance_args) 1130 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ 1131 struct btrfs_ioctl_ino_path_args) 1132 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ 1133 struct btrfs_ioctl_logical_ino_args) 1134 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ 1135 struct btrfs_ioctl_received_subvol_args) 1136 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) 1137 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ 1138 struct btrfs_ioctl_vol_args) 1139 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ 1140 struct btrfs_ioctl_quota_ctl_args) 1141 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ 1142 struct btrfs_ioctl_qgroup_assign_args) 1143 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ 1144 struct btrfs_ioctl_qgroup_create_args) 1145 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ 1146 struct btrfs_ioctl_qgroup_limit_args) 1147 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ 1148 struct btrfs_ioctl_quota_rescan_args) 1149 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ 1150 struct btrfs_ioctl_quota_rescan_args) 1151 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) 1152 #define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL 1153 #define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL 1154 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ 1155 struct btrfs_ioctl_get_dev_stats) 1156 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ 1157 struct btrfs_ioctl_dev_replace_args) 1158 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ 1159 struct btrfs_ioctl_same_args) 1160 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1161 struct btrfs_ioctl_feature_flags) 1162 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 1163 struct btrfs_ioctl_feature_flags[2]) 1164 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1165 struct btrfs_ioctl_feature_flags[3]) 1166 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ 1167 struct btrfs_ioctl_vol_args_v2) 1168 #define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ 1169 struct btrfs_ioctl_logical_ino_args) 1170 #define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \ 1171 struct btrfs_ioctl_get_subvol_info_args) 1172 #define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \ 1173 struct btrfs_ioctl_get_subvol_rootref_args) 1174 #define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \ 1175 struct btrfs_ioctl_ino_lookup_user_args) 1176 #define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \ 1177 struct btrfs_ioctl_vol_args_v2) 1178 #define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \ 1179 struct btrfs_ioctl_encoded_io_args) 1180 #define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ 1181 struct btrfs_ioctl_encoded_io_args) 1182 1183 #ifdef __cplusplus 1184 } 1185 #endif 1186 1187 #endif /* _LINUX_BTRFS_H */
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