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The C and C++ Include Header Files
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 #define BTRFS_FEATURE_INCOMPAT_REMAP_TREE (1ULL << 17) 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 #define BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL 4 618 /* Request no compression on the range (uncompress if necessary). */ 619 #define BTRFS_DEFRAG_RANGE_NOCOMPRESS 8 620 #define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \ 621 BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL | \ 622 BTRFS_DEFRAG_RANGE_NOCOMPRESS | \ 623 BTRFS_DEFRAG_RANGE_START_IO) 624 625 struct btrfs_ioctl_defrag_range_args { 626 /* start of the defrag operation */ 627 __u64 start; 628 629 /* number of bytes to defrag, use (u64)-1 to say all */ 630 __u64 len; 631 632 /* 633 * flags for the operation, which can include turning 634 * on compression for this one defrag 635 */ 636 __u64 flags; 637 638 /* 639 * any extent bigger than this will be considered 640 * already defragged. Use 0 to take the kernel default 641 * Use 1 to say every single extent must be rewritten 642 */ 643 __u32 extent_thresh; 644 645 /* 646 * which compression method to use if turning on compression 647 * for this defrag operation. If unspecified, zlib will be 648 * used. If compression level is also being specified, set the 649 * BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL flag and fill the compress 650 * member structure instead of the compress_type field. 651 */ 652 union { 653 __u32 compress_type; 654 struct { 655 __u8 type; 656 __s8 level; 657 } compress; 658 }; 659 660 /* spare for later */ 661 __u32 unused[4]; 662 }; 663 664 665 #define BTRFS_SAME_DATA_DIFFERS 1 666 /* For extent-same ioctl */ 667 struct btrfs_ioctl_same_extent_info { 668 __s64 fd; /* in - destination file */ 669 __u64 logical_offset; /* in - start of extent in destination */ 670 __u64 bytes_deduped; /* out - total # of bytes we were able 671 * to dedupe from this file */ 672 /* status of this dedupe operation: 673 * 0 if dedup succeeds 674 * < 0 for error 675 * == BTRFS_SAME_DATA_DIFFERS if data differs 676 */ 677 __s32 status; /* out - see above description */ 678 __u32 reserved; 679 }; 680 681 struct btrfs_ioctl_same_args { 682 __u64 logical_offset; /* in - start of extent in source */ 683 __u64 length; /* in - length of extent */ 684 __u16 dest_count; /* in - total elements in info array */ 685 __u16 reserved1; 686 __u32 reserved2; 687 struct btrfs_ioctl_same_extent_info info[]; 688 }; 689 690 struct btrfs_ioctl_space_info { 691 __u64 flags; 692 __u64 total_bytes; 693 __u64 used_bytes; 694 }; 695 696 struct btrfs_ioctl_space_args { 697 __u64 space_slots; 698 __u64 total_spaces; 699 struct btrfs_ioctl_space_info spaces[]; 700 }; 701 702 struct btrfs_data_container { 703 __u32 bytes_left; /* out -- bytes not needed to deliver output */ 704 __u32 bytes_missing; /* out -- additional bytes needed for result */ 705 __u32 elem_cnt; /* out */ 706 __u32 elem_missed; /* out */ 707 __u64 val[]; /* out */ 708 }; 709 710 struct btrfs_ioctl_ino_path_args { 711 __u64 inum; /* in */ 712 __u64 size; /* in */ 713 __u64 reserved[4]; 714 /* struct btrfs_data_container *fspath; out */ 715 __u64 fspath; /* out */ 716 }; 717 718 struct btrfs_ioctl_logical_ino_args { 719 __u64 logical; /* in */ 720 __u64 size; /* in */ 721 __u64 reserved[3]; /* must be 0 for now */ 722 __u64 flags; /* in, v2 only */ 723 /* struct btrfs_data_container *inodes; out */ 724 __u64 inodes; 725 }; 726 727 /* 728 * Return every ref to the extent, not just those containing logical block. 729 * Requires logical == extent bytenr. 730 */ 731 #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) 732 733 enum btrfs_dev_stat_values { 734 /* disk I/O failure stats */ 735 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ 736 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ 737 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ 738 739 /* stats for indirect indications for I/O failures */ 740 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or 741 * contents is illegal: this is an 742 * indication that the block was damaged 743 * during read or write, or written to 744 * wrong location or read from wrong 745 * location */ 746 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not 747 * been written */ 748 749 BTRFS_DEV_STAT_VALUES_MAX 750 }; 751 752 /* Reset statistics after reading; needs SYS_ADMIN capability */ 753 #define BTRFS_DEV_STATS_RESET (1ULL << 0) 754 755 struct btrfs_ioctl_get_dev_stats { 756 __u64 devid; /* in */ 757 __u64 nr_items; /* in/out */ 758 __u64 flags; /* in/out */ 759 760 /* out values: */ 761 __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; 762 763 /* 764 * This pads the struct to 1032 bytes. It was originally meant to pad to 765 * 1024 bytes, but when adding the flags field, the padding calculation 766 * was not adjusted. 767 */ 768 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; 769 }; 770 771 #define BTRFS_QUOTA_CTL_ENABLE 1 772 #define BTRFS_QUOTA_CTL_DISABLE 2 773 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 774 #define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4 775 struct btrfs_ioctl_quota_ctl_args { 776 __u64 cmd; 777 __u64 status; 778 }; 779 780 struct btrfs_ioctl_quota_rescan_args { 781 __u64 flags; 782 __u64 progress; 783 __u64 reserved[6]; 784 }; 785 786 struct btrfs_ioctl_qgroup_assign_args { 787 __u64 assign; 788 __u64 src; 789 __u64 dst; 790 }; 791 792 struct btrfs_ioctl_qgroup_create_args { 793 __u64 create; 794 __u64 qgroupid; 795 }; 796 struct btrfs_ioctl_timespec { 797 __u64 sec; 798 __u32 nsec; 799 }; 800 801 struct btrfs_ioctl_received_subvol_args { 802 char uuid[BTRFS_UUID_SIZE]; /* in */ 803 __u64 stransid; /* in */ 804 __u64 rtransid; /* out */ 805 struct btrfs_ioctl_timespec stime; /* in */ 806 struct btrfs_ioctl_timespec rtime; /* out */ 807 __u64 flags; /* in */ 808 __u64 reserved[16]; /* in */ 809 }; 810 811 /* 812 * Caller doesn't want file data in the send stream, even if the 813 * search of clone sources doesn't find an extent. UPDATE_EXTENT 814 * commands will be sent instead of WRITE commands. 815 */ 816 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 817 818 /* 819 * Do not add the leading stream header. Used when multiple snapshots 820 * are sent back to back. 821 */ 822 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 823 824 /* 825 * Omit the command at the end of the stream that indicated the end 826 * of the stream. This option is used when multiple snapshots are 827 * sent back to back. 828 */ 829 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 830 831 /* 832 * Read the protocol version in the structure 833 */ 834 #define BTRFS_SEND_FLAG_VERSION 0x8 835 836 /* 837 * Send compressed data using the ENCODED_WRITE command instead of decompressing 838 * the data and sending it with the WRITE command. This requires protocol 839 * version >= 2. 840 */ 841 #define BTRFS_SEND_FLAG_COMPRESSED 0x10 842 843 #define BTRFS_SEND_FLAG_MASK \ 844 (BTRFS_SEND_FLAG_NO_FILE_DATA | \ 845 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ 846 BTRFS_SEND_FLAG_OMIT_END_CMD | \ 847 BTRFS_SEND_FLAG_VERSION | \ 848 BTRFS_SEND_FLAG_COMPRESSED) 849 850 struct btrfs_ioctl_send_args { 851 __s64 send_fd; /* in */ 852 __u64 clone_sources_count; /* in */ 853 __u64 *clone_sources; /* in */ 854 __u64 parent_root; /* in */ 855 __u64 flags; /* in */ 856 __u32 version; /* in */ 857 __u8 reserved[28]; /* in */ 858 }; 859 860 /* 861 * Information about a fs tree root. 862 * 863 * All items are filled by the ioctl 864 */ 865 struct btrfs_ioctl_get_subvol_info_args { 866 /* Id of this subvolume */ 867 __u64 treeid; 868 869 /* Name of this subvolume, used to get the real name at mount point */ 870 char name[BTRFS_VOL_NAME_MAX + 1]; 871 872 /* 873 * Id of the subvolume which contains this subvolume. 874 * Zero for top-level subvolume or a deleted subvolume. 875 */ 876 __u64 parent_id; 877 878 /* 879 * Inode number of the directory which contains this subvolume. 880 * Zero for top-level subvolume or a deleted subvolume 881 */ 882 __u64 dirid; 883 884 /* Latest transaction id of this subvolume */ 885 __u64 generation; 886 887 /* Flags of this subvolume */ 888 __u64 flags; 889 890 /* UUID of this subvolume */ 891 __u8 uuid[BTRFS_UUID_SIZE]; 892 893 /* 894 * UUID of the subvolume of which this subvolume is a snapshot. 895 * All zero for a non-snapshot subvolume. 896 */ 897 __u8 parent_uuid[BTRFS_UUID_SIZE]; 898 899 /* 900 * UUID of the subvolume from which this subvolume was received. 901 * All zero for non-received subvolume. 902 */ 903 __u8 received_uuid[BTRFS_UUID_SIZE]; 904 905 /* Transaction id indicating when change/create/send/receive happened */ 906 __u64 ctransid; 907 __u64 otransid; 908 __u64 stransid; 909 __u64 rtransid; 910 /* Time corresponding to c/o/s/rtransid */ 911 struct btrfs_ioctl_timespec ctime; 912 struct btrfs_ioctl_timespec otime; 913 struct btrfs_ioctl_timespec stime; 914 struct btrfs_ioctl_timespec rtime; 915 916 /* Must be zero */ 917 __u64 reserved[8]; 918 }; 919 920 #define BTRFS_MAX_ROOTREF_BUFFER_NUM 255 921 struct btrfs_ioctl_get_subvol_rootref_args { 922 /* in/out, minimum id of rootref's treeid to be searched */ 923 __u64 min_treeid; 924 925 /* out */ 926 struct { 927 __u64 treeid; 928 __u64 dirid; 929 } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM]; 930 931 /* out, number of found items */ 932 __u8 num_items; 933 __u8 align[7]; 934 }; 935 936 /* 937 * Data and metadata for an encoded read or write. 938 * 939 * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g., 940 * compression). This can be used to read the compressed contents of a file or 941 * write pre-compressed data directly to a file. 942 * 943 * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially 944 * preadv/pwritev with additional metadata about how the data is encoded and the 945 * size of the unencoded data. 946 * 947 * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills 948 * the metadata fields, and returns the size of the encoded data. It reads one 949 * extent per call. It can also read data which is not encoded. 950 * 951 * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data 952 * from the iovecs, and returns the size of the encoded data. Note that the 953 * encoded data is not validated when it is written; if it is not valid (e.g., 954 * it cannot be decompressed), then a subsequent read may return an error. 955 * 956 * Since the filesystem page cache contains decoded data, encoded I/O bypasses 957 * the page cache. Encoded I/O requires CAP_SYS_ADMIN. 958 */ 959 struct btrfs_ioctl_encoded_io_args { 960 /* Input parameters for both reads and writes. */ 961 962 /* 963 * iovecs containing encoded data. 964 * 965 * For reads, if the size of the encoded data is larger than the sum of 966 * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with 967 * ENOBUFS. 968 * 969 * For writes, the size of the encoded data is the sum of iov[n].iov_len 970 * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may 971 * increase in the future). This must also be less than or equal to 972 * unencoded_len. 973 */ 974 const struct iovec *iov; 975 /* Number of iovecs. */ 976 unsigned long iovcnt; 977 /* 978 * Offset in file. 979 * 980 * For writes, must be aligned to the sector size of the filesystem. 981 */ 982 __s64 offset; 983 /* Currently must be zero. */ 984 __u64 flags; 985 986 /* 987 * For reads, the following members are output parameters that will 988 * contain the returned metadata for the encoded data. 989 * For writes, the following members must be set to the metadata for the 990 * encoded data. 991 */ 992 993 /* 994 * Length of the data in the file. 995 * 996 * Must be less than or equal to unencoded_len - unencoded_offset. For 997 * writes, must be aligned to the sector size of the filesystem unless 998 * the data ends at or beyond the current end of the file. 999 */ 1000 __u64 len; 1001 /* 1002 * Length of the unencoded (i.e., decrypted and decompressed) data. 1003 * 1004 * For writes, must be no more than 128 KiB (this limit may increase in 1005 * the future). If the unencoded data is actually longer than 1006 * unencoded_len, then it is truncated; if it is shorter, then it is 1007 * extended with zeroes. 1008 */ 1009 __u64 unencoded_len; 1010 /* 1011 * Offset from the first byte of the unencoded data to the first byte of 1012 * logical data in the file. 1013 * 1014 * Must be less than unencoded_len. 1015 */ 1016 __u64 unencoded_offset; 1017 /* 1018 * BTRFS_ENCODED_IO_COMPRESSION_* type. 1019 * 1020 * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE. 1021 */ 1022 __u32 compression; 1023 /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */ 1024 __u32 encryption; 1025 /* 1026 * Reserved for future expansion. 1027 * 1028 * For reads, always returned as zero. Users should check for non-zero 1029 * bytes. If there are any, then the kernel has a newer version of this 1030 * structure with additional information that the user definition is 1031 * missing. 1032 * 1033 * For writes, must be zeroed. 1034 */ 1035 __u8 reserved[64]; 1036 }; 1037 1038 /* Data is not compressed. */ 1039 #define BTRFS_ENCODED_IO_COMPRESSION_NONE 0 1040 /* Data is compressed as a single zlib stream. */ 1041 #define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1 1042 /* 1043 * Data is compressed as a single zstd frame with the windowLog compression 1044 * parameter set to no more than 17. 1045 */ 1046 #define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2 1047 /* 1048 * Data is compressed sector by sector (using the sector size indicated by the 1049 * name of the constant) with LZO1X and wrapped in the format documented in 1050 * fs/btrfs/lzo.c. For writes, the compression sector size must match the 1051 * filesystem sector size. 1052 */ 1053 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3 1054 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4 1055 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5 1056 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6 1057 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7 1058 #define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8 1059 1060 /* Data is not encrypted. */ 1061 #define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0 1062 #define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1 1063 1064 /* 1065 * Wait for subvolume cleaning process. This queries the kernel queue and it 1066 * can change between the calls. 1067 * 1068 * - FOR_ONE - specify the subvolid 1069 * - FOR_QUEUED - wait for all currently queued 1070 * - COUNT - count number of queued 1071 * - PEEK_FIRST - read which is the first in the queue (to be cleaned or being 1072 * cleaned already), or 0 if the queue is empty 1073 * - PEEK_LAST - read the last subvolid in the queue, or 0 if the queue is empty 1074 */ 1075 struct btrfs_ioctl_subvol_wait { 1076 __u64 subvolid; 1077 __u32 mode; 1078 __u32 count; 1079 }; 1080 1081 #define BTRFS_SUBVOL_SYNC_WAIT_FOR_ONE (0) 1082 #define BTRFS_SUBVOL_SYNC_WAIT_FOR_QUEUED (1) 1083 #define BTRFS_SUBVOL_SYNC_COUNT (2) 1084 #define BTRFS_SUBVOL_SYNC_PEEK_FIRST (3) 1085 #define BTRFS_SUBVOL_SYNC_PEEK_LAST (4) 1086 1087 /* Error codes as returned by the kernel */ 1088 enum btrfs_err_code { 1089 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, 1090 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, 1091 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, 1092 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, 1093 BTRFS_ERROR_DEV_TGT_REPLACE, 1094 BTRFS_ERROR_DEV_MISSING_NOT_FOUND, 1095 BTRFS_ERROR_DEV_ONLY_WRITABLE, 1096 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS, 1097 BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET, 1098 BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET, 1099 }; 1100 1101 /* Flags for IOC_SHUTDOWN, must match XFS_FSOP_GOING_FLAGS_* flags. */ 1102 #define BTRFS_SHUTDOWN_FLAGS_DEFAULT 0x0 1103 #define BTRFS_SHUTDOWN_FLAGS_LOGFLUSH 0x1 1104 #define BTRFS_SHUTDOWN_FLAGS_NOLOGFLUSH 0x2 1105 #define BTRFS_SHUTDOWN_FLAGS_LAST 0x3 1106 1107 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ 1108 struct btrfs_ioctl_vol_args) 1109 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ 1110 struct btrfs_ioctl_vol_args) 1111 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ 1112 struct btrfs_ioctl_vol_args) 1113 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ 1114 struct btrfs_ioctl_vol_args) 1115 #define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \ 1116 struct btrfs_ioctl_vol_args) 1117 /* trans start and trans end are dangerous, and only for 1118 * use by applications that know how to avoid the 1119 * resulting deadlocks 1120 */ 1121 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) 1122 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) 1123 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) 1124 1125 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) 1126 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ 1127 struct btrfs_ioctl_vol_args) 1128 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ 1129 struct btrfs_ioctl_vol_args) 1130 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ 1131 struct btrfs_ioctl_vol_args) 1132 1133 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ 1134 struct btrfs_ioctl_clone_range_args) 1135 1136 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ 1137 struct btrfs_ioctl_vol_args) 1138 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ 1139 struct btrfs_ioctl_vol_args) 1140 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ 1141 struct btrfs_ioctl_defrag_range_args) 1142 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1143 struct btrfs_ioctl_search_args) 1144 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 1145 struct btrfs_ioctl_search_args_v2) 1146 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ 1147 struct btrfs_ioctl_ino_lookup_args) 1148 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) 1149 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ 1150 struct btrfs_ioctl_space_args) 1151 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) 1152 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) 1153 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ 1154 struct btrfs_ioctl_vol_args_v2) 1155 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ 1156 struct btrfs_ioctl_vol_args_v2) 1157 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) 1158 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) 1159 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ 1160 struct btrfs_ioctl_scrub_args) 1161 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) 1162 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ 1163 struct btrfs_ioctl_scrub_args) 1164 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ 1165 struct btrfs_ioctl_dev_info_args) 1166 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ 1167 struct btrfs_ioctl_fs_info_args) 1168 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ 1169 struct btrfs_ioctl_balance_args) 1170 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) 1171 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ 1172 struct btrfs_ioctl_balance_args) 1173 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ 1174 struct btrfs_ioctl_ino_path_args) 1175 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ 1176 struct btrfs_ioctl_logical_ino_args) 1177 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ 1178 struct btrfs_ioctl_received_subvol_args) 1179 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) 1180 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ 1181 struct btrfs_ioctl_vol_args) 1182 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ 1183 struct btrfs_ioctl_quota_ctl_args) 1184 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ 1185 struct btrfs_ioctl_qgroup_assign_args) 1186 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ 1187 struct btrfs_ioctl_qgroup_create_args) 1188 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ 1189 struct btrfs_ioctl_qgroup_limit_args) 1190 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ 1191 struct btrfs_ioctl_quota_rescan_args) 1192 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ 1193 struct btrfs_ioctl_quota_rescan_args) 1194 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) 1195 #define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL 1196 #define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL 1197 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ 1198 struct btrfs_ioctl_get_dev_stats) 1199 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ 1200 struct btrfs_ioctl_dev_replace_args) 1201 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ 1202 struct btrfs_ioctl_same_args) 1203 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1204 struct btrfs_ioctl_feature_flags) 1205 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 1206 struct btrfs_ioctl_feature_flags[2]) 1207 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 1208 struct btrfs_ioctl_feature_flags[3]) 1209 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ 1210 struct btrfs_ioctl_vol_args_v2) 1211 #define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ 1212 struct btrfs_ioctl_logical_ino_args) 1213 #define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \ 1214 struct btrfs_ioctl_get_subvol_info_args) 1215 #define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \ 1216 struct btrfs_ioctl_get_subvol_rootref_args) 1217 #define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \ 1218 struct btrfs_ioctl_ino_lookup_user_args) 1219 #define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \ 1220 struct btrfs_ioctl_vol_args_v2) 1221 #define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \ 1222 struct btrfs_ioctl_encoded_io_args) 1223 #define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ 1224 struct btrfs_ioctl_encoded_io_args) 1225 #define BTRFS_IOC_SUBVOL_SYNC_WAIT _IOW(BTRFS_IOCTL_MAGIC, 65, \ 1226 struct btrfs_ioctl_subvol_wait) 1227 1228 /* Shutdown ioctl should follow XFS's interfaces, thus not using btrfs magic. */ 1229 #define BTRFS_IOC_SHUTDOWN _IOR('X', 125, __u32) 1230 1231 #ifdef __cplusplus 1232 } 1233 #endif 1234 1235 #endif /* _LINUX_BTRFS_H */
