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 #include <linux/types.h> 23 #include <linux/ioctl.h> 24 25 #define BTRFS_IOCTL_MAGIC 0x94 26 #define BTRFS_VOL_NAME_MAX 255 27 #define BTRFS_LABEL_SIZE 256 28 29 /* this should be 4k */ 30 #define BTRFS_PATH_NAME_MAX 4087 31 struct btrfs_ioctl_vol_args { 32 __s64 fd; 33 char name[BTRFS_PATH_NAME_MAX + 1]; 34 }; 35 36 #define BTRFS_DEVICE_PATH_NAME_MAX 1024 37 38 #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) 39 40 #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ 41 (BTRFS_SUBVOL_CREATE_ASYNC | \ 42 BTRFS_SUBVOL_RDONLY | \ 43 BTRFS_SUBVOL_QGROUP_INHERIT | \ 44 BTRFS_DEVICE_SPEC_BY_ID) 45 46 #define BTRFS_FSID_SIZE 16 47 #define BTRFS_UUID_SIZE 16 48 #define BTRFS_UUID_UNPARSED_SIZE 37 49 50 /* 51 * flags definition for qgroup limits 52 * 53 * Used by: 54 * struct btrfs_qgroup_limit.flags 55 * struct btrfs_qgroup_limit_item.flags 56 */ 57 #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) 58 #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) 59 #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) 60 #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) 61 #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) 62 #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) 63 64 struct btrfs_qgroup_limit { 65 __u64 flags; 66 __u64 max_rfer; 67 __u64 max_excl; 68 __u64 rsv_rfer; 69 __u64 rsv_excl; 70 }; 71 72 /* 73 * flags definition for qgroup inheritance 74 * 75 * Used by: 76 * struct btrfs_qgroup_inherit.flags 77 */ 78 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) 79 80 struct btrfs_qgroup_inherit { 81 __u64 flags; 82 __u64 num_qgroups; 83 __u64 num_ref_copies; 84 __u64 num_excl_copies; 85 struct btrfs_qgroup_limit lim; 86 __u64 qgroups[0]; 87 }; 88 89 struct btrfs_ioctl_qgroup_limit_args { 90 __u64 qgroupid; 91 struct btrfs_qgroup_limit lim; 92 }; 93 94 /* 95 * flags for subvolumes 96 * 97 * Used by: 98 * struct btrfs_ioctl_vol_args_v2.flags 99 * 100 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: 101 * - BTRFS_IOC_SUBVOL_GETFLAGS 102 * - BTRFS_IOC_SUBVOL_SETFLAGS 103 */ 104 #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) 105 #define BTRFS_SUBVOL_RDONLY (1ULL << 1) 106 #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) 107 108 #define BTRFS_SUBVOL_NAME_MAX 4039 109 struct btrfs_ioctl_vol_args_v2 { 110 __s64 fd; 111 __u64 transid; 112 __u64 flags; 113 union { 114 struct { 115 __u64 size; 116 struct btrfs_qgroup_inherit __user *qgroup_inherit; 117 }; 118 __u64 unused[4]; 119 }; 120 union { 121 char name[BTRFS_SUBVOL_NAME_MAX + 1]; 122 __u64 devid; 123 }; 124 }; 125 126 /* 127 * structure to report errors and progress to userspace, either as a 128 * result of a finished scrub, a canceled scrub or a progress inquiry 129 */ 130 struct btrfs_scrub_progress { 131 __u64 data_extents_scrubbed; /* # of data extents scrubbed */ 132 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ 133 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ 134 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ 135 __u64 read_errors; /* # of read errors encountered (EIO) */ 136 __u64 csum_errors; /* # of failed csum checks */ 137 __u64 verify_errors; /* # of occurences, where the metadata 138 * of a tree block did not match the 139 * expected values, like generation or 140 * logical */ 141 __u64 no_csum; /* # of 4k data block for which no csum 142 * is present, probably the result of 143 * data written with nodatasum */ 144 __u64 csum_discards; /* # of csum for which no data was found 145 * in the extent tree. */ 146 __u64 super_errors; /* # of bad super blocks encountered */ 147 __u64 malloc_errors; /* # of internal kmalloc errors. These 148 * will likely cause an incomplete 149 * scrub */ 150 __u64 uncorrectable_errors; /* # of errors where either no intact 151 * copy was found or the writeback 152 * failed */ 153 __u64 corrected_errors; /* # of errors corrected */ 154 __u64 last_physical; /* last physical address scrubbed. In 155 * case a scrub was aborted, this can 156 * be used to restart the scrub */ 157 __u64 unverified_errors; /* # of occurences where a read for a 158 * full (64k) bio failed, but the re- 159 * check succeeded for each 4k piece. 160 * Intermittent error. */ 161 }; 162 163 #define BTRFS_SCRUB_READONLY 1 164 struct btrfs_ioctl_scrub_args { 165 __u64 devid; /* in */ 166 __u64 start; /* in */ 167 __u64 end; /* in */ 168 __u64 flags; /* in */ 169 struct btrfs_scrub_progress progress; /* out */ 170 /* pad to 1k */ 171 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; 172 }; 173 174 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 175 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 176 struct btrfs_ioctl_dev_replace_start_params { 177 __u64 srcdevid; /* in, if 0, use srcdev_name instead */ 178 __u64 cont_reading_from_srcdev_mode; /* in, see #define 179 * above */ 180 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 181 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 182 }; 183 184 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 185 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 186 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 187 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 188 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 189 struct btrfs_ioctl_dev_replace_status_params { 190 __u64 replace_state; /* out, see #define above */ 191 __u64 progress_1000; /* out, 0 <= x <= 1000 */ 192 __u64 time_started; /* out, seconds since 1-Jan-1970 */ 193 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ 194 __u64 num_write_errors; /* out */ 195 __u64 num_uncorrectable_read_errors; /* out */ 196 }; 197 198 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 199 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 200 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 201 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 202 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 203 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 204 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 205 struct btrfs_ioctl_dev_replace_args { 206 __u64 cmd; /* in */ 207 __u64 result; /* out */ 208 209 union { 210 struct btrfs_ioctl_dev_replace_start_params start; 211 struct btrfs_ioctl_dev_replace_status_params status; 212 }; /* in/out */ 213 214 __u64 spare[64]; 215 }; 216 217 struct btrfs_ioctl_dev_info_args { 218 __u64 devid; /* in/out */ 219 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ 220 __u64 bytes_used; /* out */ 221 __u64 total_bytes; /* out */ 222 __u64 unused[379]; /* pad to 4k */ 223 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ 224 }; 225 226 struct btrfs_ioctl_fs_info_args { 227 __u64 max_id; /* out */ 228 __u64 num_devices; /* out */ 229 __u8 fsid[BTRFS_FSID_SIZE]; /* out */ 230 __u32 nodesize; /* out */ 231 __u32 sectorsize; /* out */ 232 __u32 clone_alignment; /* out */ 233 __u32 reserved32; 234 __u64 reserved[122]; /* pad to 1k */ 235 }; 236 237 /* 238 * feature flags 239 * 240 * Used by: 241 * struct btrfs_ioctl_feature_flags 242 */ 243 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) 244 /* 245 * Older kernels (< 4.9) on big-endian systems produced broken free space tree 246 * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions 247 * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted. 248 * btrfs-progs can also intentionally clear this bit to ask the kernel to 249 * rebuild the free space tree, however this might not work on older kernels 250 * that do not know about this bit. If not sure, clear the cache manually on 251 * first mount when booting older kernel versions. 252 */ 253 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1) 254 255 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) 256 #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) 257 #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) 258 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) 259 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4) 260 261 /* 262 * older kernels tried to do bigger metadata blocks, but the 263 * code was pretty buggy. Lets not let them try anymore. 264 */ 265 #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) 266 267 #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) 268 #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) 269 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) 270 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) 271 272 struct btrfs_ioctl_feature_flags { 273 __u64 compat_flags; 274 __u64 compat_ro_flags; 275 __u64 incompat_flags; 276 }; 277 278 /* balance control ioctl modes */ 279 #define BTRFS_BALANCE_CTL_PAUSE 1 280 #define BTRFS_BALANCE_CTL_CANCEL 2 281 282 /* 283 * this is packed, because it should be exactly the same as its disk 284 * byte order counterpart (struct btrfs_disk_balance_args) 285 */ 286 struct btrfs_balance_args { 287 __u64 profiles; 288 union { 289 __u64 usage; 290 struct { 291 __u32 usage_min; 292 __u32 usage_max; 293 }; 294 }; 295 __u64 devid; 296 __u64 pstart; 297 __u64 pend; 298 __u64 vstart; 299 __u64 vend; 300 301 __u64 target; 302 303 __u64 flags; 304 305 /* 306 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' 307 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum 308 * and maximum 309 */ 310 union { 311 __u64 limit; /* limit number of processed chunks */ 312 struct { 313 __u32 limit_min; 314 __u32 limit_max; 315 }; 316 }; 317 318 /* 319 * Process chunks that cross stripes_min..stripes_max devices, 320 * BTRFS_BALANCE_ARGS_STRIPES_RANGE 321 */ 322 __u32 stripes_min; 323 __u32 stripes_max; 324 325 __u64 unused[6]; 326 } __attribute__ ((__packed__)); 327 328 /* report balance progress to userspace */ 329 struct btrfs_balance_progress { 330 __u64 expected; /* estimated # of chunks that will be 331 * relocated to fulfill the request */ 332 __u64 considered; /* # of chunks we have considered so far */ 333 __u64 completed; /* # of chunks relocated so far */ 334 }; 335 336 /* 337 * flags definition for balance 338 * 339 * Restriper's general type filter 340 * 341 * Used by: 342 * btrfs_ioctl_balance_args.flags 343 * btrfs_balance_control.flags (internal) 344 */ 345 #define BTRFS_BALANCE_DATA (1ULL << 0) 346 #define BTRFS_BALANCE_SYSTEM (1ULL << 1) 347 #define BTRFS_BALANCE_METADATA (1ULL << 2) 348 349 #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ 350 BTRFS_BALANCE_SYSTEM | \ 351 BTRFS_BALANCE_METADATA) 352 353 #define BTRFS_BALANCE_FORCE (1ULL << 3) 354 #define BTRFS_BALANCE_RESUME (1ULL << 4) 355 356 /* 357 * flags definitions for per-type balance args 358 * 359 * Balance filters 360 * 361 * Used by: 362 * struct btrfs_balance_args 363 */ 364 #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) 365 #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) 366 #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) 367 #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) 368 #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) 369 #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) 370 #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) 371 #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) 372 #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) 373 374 #define BTRFS_BALANCE_ARGS_MASK \ 375 (BTRFS_BALANCE_ARGS_PROFILES | \ 376 BTRFS_BALANCE_ARGS_USAGE | \ 377 BTRFS_BALANCE_ARGS_DEVID | \ 378 BTRFS_BALANCE_ARGS_DRANGE | \ 379 BTRFS_BALANCE_ARGS_VRANGE | \ 380 BTRFS_BALANCE_ARGS_LIMIT | \ 381 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ 382 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ 383 BTRFS_BALANCE_ARGS_USAGE_RANGE) 384 385 /* 386 * Profile changing flags. When SOFT is set we won't relocate chunk if 387 * it already has the target profile (even though it may be 388 * half-filled). 389 */ 390 #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) 391 #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) 392 393 394 /* 395 * flags definition for balance state 396 * 397 * Used by: 398 * struct btrfs_ioctl_balance_args.state 399 */ 400 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) 401 #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) 402 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) 403 404 struct btrfs_ioctl_balance_args { 405 __u64 flags; /* in/out */ 406 __u64 state; /* out */ 407 408 struct btrfs_balance_args data; /* in/out */ 409 struct btrfs_balance_args meta; /* in/out */ 410 struct btrfs_balance_args sys; /* in/out */ 411 412 struct btrfs_balance_progress stat; /* out */ 413 414 __u64 unused[72]; /* pad to 1k */ 415 }; 416 417 #define BTRFS_INO_LOOKUP_PATH_MAX 4080 418 struct btrfs_ioctl_ino_lookup_args { 419 __u64 treeid; 420 __u64 objectid; 421 char name[BTRFS_INO_LOOKUP_PATH_MAX]; 422 }; 423 424 /* Search criteria for the btrfs SEARCH ioctl family. */ 425 struct btrfs_ioctl_search_key { 426 /* 427 * The tree we're searching in. 1 is the tree of tree roots, 2 is the 428 * extent tree, etc... 429 * 430 * A special tree_id value of 0 will cause a search in the subvolume 431 * tree that the inode which is passed to the ioctl is part of. 432 */ 433 __u64 tree_id; /* in */ 434 435 /* 436 * When doing a tree search, we're actually taking a slice from a 437 * linear search space of 136-bit keys. 438 * 439 * A full 136-bit tree key is composed as: 440 * (objectid << 72) + (type << 64) + offset 441 * 442 * The individual min and max values for objectid, type and offset 443 * define the min_key and max_key values for the search range. All 444 * metadata items with a key in the interval [min_key, max_key] will be 445 * returned. 446 * 447 * Additionally, we can filter the items returned on transaction id of 448 * the metadata block they're stored in by specifying a transid range. 449 * Be aware that this transaction id only denotes when the metadata 450 * page that currently contains the item got written the last time as 451 * result of a COW operation. The number does not have any meaning 452 * related to the transaction in which an individual item that is being 453 * returned was created or changed. 454 */ 455 __u64 min_objectid; /* in */ 456 __u64 max_objectid; /* in */ 457 __u64 min_offset; /* in */ 458 __u64 max_offset; /* in */ 459 __u64 min_transid; /* in */ 460 __u64 max_transid; /* in */ 461 __u32 min_type; /* in */ 462 __u32 max_type; /* in */ 463 464 /* 465 * input: The maximum amount of results desired. 466 * output: The actual amount of items returned, restricted by any of: 467 * - reaching the upper bound of the search range 468 * - reaching the input nr_items amount of items 469 * - completely filling the supplied memory buffer 470 */ 471 __u32 nr_items; /* in/out */ 472 473 /* align to 64 bits */ 474 __u32 unused; 475 476 /* some extra for later */ 477 __u64 unused1; 478 __u64 unused2; 479 __u64 unused3; 480 __u64 unused4; 481 }; 482 483 struct btrfs_ioctl_search_header { 484 __u64 transid; 485 __u64 objectid; 486 __u64 offset; 487 __u32 type; 488 __u32 len; 489 }; 490 491 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) 492 /* 493 * the buf is an array of search headers where 494 * each header is followed by the actual item 495 * the type field is expanded to 32 bits for alignment 496 */ 497 struct btrfs_ioctl_search_args { 498 struct btrfs_ioctl_search_key key; 499 char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; 500 }; 501 502 struct btrfs_ioctl_search_args_v2 { 503 struct btrfs_ioctl_search_key key; /* in/out - search parameters */ 504 __u64 buf_size; /* in - size of buffer 505 * out - on EOVERFLOW: needed size 506 * to store item */ 507 __u64 buf[0]; /* out - found items */ 508 }; 509 510 struct btrfs_ioctl_clone_range_args { 511 __s64 src_fd; 512 __u64 src_offset, src_length; 513 __u64 dest_offset; 514 }; 515 516 /* 517 * flags definition for the defrag range ioctl 518 * 519 * Used by: 520 * struct btrfs_ioctl_defrag_range_args.flags 521 */ 522 #define BTRFS_DEFRAG_RANGE_COMPRESS 1 523 #define BTRFS_DEFRAG_RANGE_START_IO 2 524 struct btrfs_ioctl_defrag_range_args { 525 /* start of the defrag operation */ 526 __u64 start; 527 528 /* number of bytes to defrag, use (u64)-1 to say all */ 529 __u64 len; 530 531 /* 532 * flags for the operation, which can include turning 533 * on compression for this one defrag 534 */ 535 __u64 flags; 536 537 /* 538 * any extent bigger than this will be considered 539 * already defragged. Use 0 to take the kernel default 540 * Use 1 to say every single extent must be rewritten 541 */ 542 __u32 extent_thresh; 543 544 /* 545 * which compression method to use if turning on compression 546 * for this defrag operation. If unspecified, zlib will 547 * be used 548 */ 549 __u32 compress_type; 550 551 /* spare for later */ 552 __u32 unused[4]; 553 }; 554 555 556 #define BTRFS_SAME_DATA_DIFFERS 1 557 /* For extent-same ioctl */ 558 struct btrfs_ioctl_same_extent_info { 559 __s64 fd; /* in - destination file */ 560 __u64 logical_offset; /* in - start of extent in destination */ 561 __u64 bytes_deduped; /* out - total # of bytes we were able 562 * to dedupe from this file */ 563 /* status of this dedupe operation: 564 * 0 if dedup succeeds 565 * < 0 for error 566 * == BTRFS_SAME_DATA_DIFFERS if data differs 567 */ 568 __s32 status; /* out - see above description */ 569 __u32 reserved; 570 }; 571 572 struct btrfs_ioctl_same_args { 573 __u64 logical_offset; /* in - start of extent in source */ 574 __u64 length; /* in - length of extent */ 575 __u16 dest_count; /* in - total elements in info array */ 576 __u16 reserved1; 577 __u32 reserved2; 578 struct btrfs_ioctl_same_extent_info info[0]; 579 }; 580 581 struct btrfs_ioctl_space_info { 582 __u64 flags; 583 __u64 total_bytes; 584 __u64 used_bytes; 585 }; 586 587 struct btrfs_ioctl_space_args { 588 __u64 space_slots; 589 __u64 total_spaces; 590 struct btrfs_ioctl_space_info spaces[0]; 591 }; 592 593 struct btrfs_data_container { 594 __u32 bytes_left; /* out -- bytes not needed to deliver output */ 595 __u32 bytes_missing; /* out -- additional bytes needed for result */ 596 __u32 elem_cnt; /* out */ 597 __u32 elem_missed; /* out */ 598 __u64 val[0]; /* out */ 599 }; 600 601 struct btrfs_ioctl_ino_path_args { 602 __u64 inum; /* in */ 603 __u64 size; /* in */ 604 __u64 reserved[4]; 605 /* struct btrfs_data_container *fspath; out */ 606 __u64 fspath; /* out */ 607 }; 608 609 struct btrfs_ioctl_logical_ino_args { 610 __u64 logical; /* in */ 611 __u64 size; /* in */ 612 __u64 reserved[3]; /* must be 0 for now */ 613 __u64 flags; /* in, v2 only */ 614 /* struct btrfs_data_container *inodes; out */ 615 __u64 inodes; 616 }; 617 /* Return every ref to the extent, not just those containing logical block. 618 * Requires logical == extent bytenr. */ 619 #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) 620 621 enum btrfs_dev_stat_values { 622 /* disk I/O failure stats */ 623 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ 624 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ 625 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ 626 627 /* stats for indirect indications for I/O failures */ 628 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or 629 * contents is illegal: this is an 630 * indication that the block was damaged 631 * during read or write, or written to 632 * wrong location or read from wrong 633 * location */ 634 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not 635 * been written */ 636 637 BTRFS_DEV_STAT_VALUES_MAX 638 }; 639 640 /* Reset statistics after reading; needs SYS_ADMIN capability */ 641 #define BTRFS_DEV_STATS_RESET (1ULL << 0) 642 643 struct btrfs_ioctl_get_dev_stats { 644 __u64 devid; /* in */ 645 __u64 nr_items; /* in/out */ 646 __u64 flags; /* in/out */ 647 648 /* out values: */ 649 __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; 650 651 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */ 652 }; 653 654 #define BTRFS_QUOTA_CTL_ENABLE 1 655 #define BTRFS_QUOTA_CTL_DISABLE 2 656 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 657 struct btrfs_ioctl_quota_ctl_args { 658 __u64 cmd; 659 __u64 status; 660 }; 661 662 struct btrfs_ioctl_quota_rescan_args { 663 __u64 flags; 664 __u64 progress; 665 __u64 reserved[6]; 666 }; 667 668 struct btrfs_ioctl_qgroup_assign_args { 669 __u64 assign; 670 __u64 src; 671 __u64 dst; 672 }; 673 674 struct btrfs_ioctl_qgroup_create_args { 675 __u64 create; 676 __u64 qgroupid; 677 }; 678 struct btrfs_ioctl_timespec { 679 __u64 sec; 680 __u32 nsec; 681 }; 682 683 struct btrfs_ioctl_received_subvol_args { 684 char uuid[BTRFS_UUID_SIZE]; /* in */ 685 __u64 stransid; /* in */ 686 __u64 rtransid; /* out */ 687 struct btrfs_ioctl_timespec stime; /* in */ 688 struct btrfs_ioctl_timespec rtime; /* out */ 689 __u64 flags; /* in */ 690 __u64 reserved[16]; /* in */ 691 }; 692 693 /* 694 * Caller doesn't want file data in the send stream, even if the 695 * search of clone sources doesn't find an extent. UPDATE_EXTENT 696 * commands will be sent instead of WRITE commands. 697 */ 698 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 699 700 /* 701 * Do not add the leading stream header. Used when multiple snapshots 702 * are sent back to back. 703 */ 704 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 705 706 /* 707 * Omit the command at the end of the stream that indicated the end 708 * of the stream. This option is used when multiple snapshots are 709 * sent back to back. 710 */ 711 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 712 713 #define BTRFS_SEND_FLAG_MASK \ 714 (BTRFS_SEND_FLAG_NO_FILE_DATA | \ 715 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ 716 BTRFS_SEND_FLAG_OMIT_END_CMD) 717 718 struct btrfs_ioctl_send_args { 719 __s64 send_fd; /* in */ 720 __u64 clone_sources_count; /* in */ 721 __u64 __user *clone_sources; /* in */ 722 __u64 parent_root; /* in */ 723 __u64 flags; /* in */ 724 __u64 reserved[4]; /* in */ 725 }; 726 727 /* Error codes as returned by the kernel */ 728 enum btrfs_err_code { 729 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, 730 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, 731 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, 732 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, 733 BTRFS_ERROR_DEV_TGT_REPLACE, 734 BTRFS_ERROR_DEV_MISSING_NOT_FOUND, 735 BTRFS_ERROR_DEV_ONLY_WRITABLE, 736 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS 737 }; 738 739 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ 740 struct btrfs_ioctl_vol_args) 741 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ 742 struct btrfs_ioctl_vol_args) 743 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ 744 struct btrfs_ioctl_vol_args) 745 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ 746 struct btrfs_ioctl_vol_args) 747 /* trans start and trans end are dangerous, and only for 748 * use by applications that know how to avoid the 749 * resulting deadlocks 750 */ 751 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) 752 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) 753 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) 754 755 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) 756 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ 757 struct btrfs_ioctl_vol_args) 758 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ 759 struct btrfs_ioctl_vol_args) 760 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ 761 struct btrfs_ioctl_vol_args) 762 763 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ 764 struct btrfs_ioctl_clone_range_args) 765 766 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ 767 struct btrfs_ioctl_vol_args) 768 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ 769 struct btrfs_ioctl_vol_args) 770 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ 771 struct btrfs_ioctl_defrag_range_args) 772 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 773 struct btrfs_ioctl_search_args) 774 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 775 struct btrfs_ioctl_search_args_v2) 776 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ 777 struct btrfs_ioctl_ino_lookup_args) 778 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) 779 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ 780 struct btrfs_ioctl_space_args) 781 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) 782 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) 783 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ 784 struct btrfs_ioctl_vol_args_v2) 785 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ 786 struct btrfs_ioctl_vol_args_v2) 787 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) 788 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) 789 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ 790 struct btrfs_ioctl_scrub_args) 791 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) 792 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ 793 struct btrfs_ioctl_scrub_args) 794 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ 795 struct btrfs_ioctl_dev_info_args) 796 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ 797 struct btrfs_ioctl_fs_info_args) 798 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ 799 struct btrfs_ioctl_balance_args) 800 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) 801 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ 802 struct btrfs_ioctl_balance_args) 803 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ 804 struct btrfs_ioctl_ino_path_args) 805 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ 806 struct btrfs_ioctl_logical_ino_args) 807 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ 808 struct btrfs_ioctl_received_subvol_args) 809 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) 810 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ 811 struct btrfs_ioctl_vol_args) 812 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ 813 struct btrfs_ioctl_quota_ctl_args) 814 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ 815 struct btrfs_ioctl_qgroup_assign_args) 816 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ 817 struct btrfs_ioctl_qgroup_create_args) 818 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ 819 struct btrfs_ioctl_qgroup_limit_args) 820 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ 821 struct btrfs_ioctl_quota_rescan_args) 822 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ 823 struct btrfs_ioctl_quota_rescan_args) 824 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) 825 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \ 826 char[BTRFS_LABEL_SIZE]) 827 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \ 828 char[BTRFS_LABEL_SIZE]) 829 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ 830 struct btrfs_ioctl_get_dev_stats) 831 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ 832 struct btrfs_ioctl_dev_replace_args) 833 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ 834 struct btrfs_ioctl_same_args) 835 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 836 struct btrfs_ioctl_feature_flags) 837 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 838 struct btrfs_ioctl_feature_flags[2]) 839 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 840 struct btrfs_ioctl_feature_flags[3]) 841 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ 842 struct btrfs_ioctl_vol_args_v2) 843 #define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ 844 struct btrfs_ioctl_logical_ino_args) 845 846 #endif /* _UAPI_LINUX_BTRFS_H */ 847