1 /* 2 * Copyright (C) 2007 Oracle. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public 6 * License v2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public 14 * License along with this program; if not, write to the 15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 16 * Boston, MA 021110-1307, USA. 17 */ 18 19 #ifndef _UAPI_LINUX_BTRFS_H 20 #define _UAPI_LINUX_BTRFS_H 21 #include <linux/types.h> 22 #include <linux/ioctl.h> 23 24 #define BTRFS_IOCTL_MAGIC 0x94 25 #define BTRFS_VOL_NAME_MAX 255 26 #define BTRFS_LABEL_SIZE 256 27 28 /* this should be 4k */ 29 #define BTRFS_PATH_NAME_MAX 4087 30 struct btrfs_ioctl_vol_args { 31 __s64 fd; 32 char name[BTRFS_PATH_NAME_MAX + 1]; 33 }; 34 35 #define BTRFS_DEVICE_PATH_NAME_MAX 1024 36 37 #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) 38 39 #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ 40 (BTRFS_SUBVOL_CREATE_ASYNC | \ 41 BTRFS_SUBVOL_RDONLY | \ 42 BTRFS_SUBVOL_QGROUP_INHERIT | \ 43 BTRFS_DEVICE_SPEC_BY_ID) 44 45 #define BTRFS_FSID_SIZE 16 46 #define BTRFS_UUID_SIZE 16 47 #define BTRFS_UUID_UNPARSED_SIZE 37 48 49 /* 50 * flags definition for qgroup limits 51 * 52 * Used by: 53 * struct btrfs_qgroup_limit.flags 54 * struct btrfs_qgroup_limit_item.flags 55 */ 56 #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) 57 #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) 58 #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) 59 #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) 60 #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) 61 #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) 62 63 struct btrfs_qgroup_limit { 64 __u64 flags; 65 __u64 max_rfer; 66 __u64 max_excl; 67 __u64 rsv_rfer; 68 __u64 rsv_excl; 69 }; 70 71 /* 72 * flags definition for qgroup inheritance 73 * 74 * Used by: 75 * struct btrfs_qgroup_inherit.flags 76 */ 77 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) 78 79 struct btrfs_qgroup_inherit { 80 __u64 flags; 81 __u64 num_qgroups; 82 __u64 num_ref_copies; 83 __u64 num_excl_copies; 84 struct btrfs_qgroup_limit lim; 85 __u64 qgroups[0]; 86 }; 87 88 struct btrfs_ioctl_qgroup_limit_args { 89 __u64 qgroupid; 90 struct btrfs_qgroup_limit lim; 91 }; 92 93 /* 94 * flags for subvolumes 95 * 96 * Used by: 97 * struct btrfs_ioctl_vol_args_v2.flags 98 * 99 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: 100 * - BTRFS_IOC_SUBVOL_GETFLAGS 101 * - BTRFS_IOC_SUBVOL_SETFLAGS 102 */ 103 #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) 104 #define BTRFS_SUBVOL_RDONLY (1ULL << 1) 105 #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) 106 107 #define BTRFS_SUBVOL_NAME_MAX 4039 108 struct btrfs_ioctl_vol_args_v2 { 109 __s64 fd; 110 __u64 transid; 111 __u64 flags; 112 union { 113 struct { 114 __u64 size; 115 struct btrfs_qgroup_inherit __user *qgroup_inherit; 116 }; 117 __u64 unused[4]; 118 }; 119 union { 120 char name[BTRFS_SUBVOL_NAME_MAX + 1]; 121 __u64 devid; 122 }; 123 }; 124 125 /* 126 * structure to report errors and progress to userspace, either as a 127 * result of a finished scrub, a canceled scrub or a progress inquiry 128 */ 129 struct btrfs_scrub_progress { 130 __u64 data_extents_scrubbed; /* # of data extents scrubbed */ 131 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ 132 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ 133 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ 134 __u64 read_errors; /* # of read errors encountered (EIO) */ 135 __u64 csum_errors; /* # of failed csum checks */ 136 __u64 verify_errors; /* # of occurences, where the metadata 137 * of a tree block did not match the 138 * expected values, like generation or 139 * logical */ 140 __u64 no_csum; /* # of 4k data block for which no csum 141 * is present, probably the result of 142 * data written with nodatasum */ 143 __u64 csum_discards; /* # of csum for which no data was found 144 * in the extent tree. */ 145 __u64 super_errors; /* # of bad super blocks encountered */ 146 __u64 malloc_errors; /* # of internal kmalloc errors. These 147 * will likely cause an incomplete 148 * scrub */ 149 __u64 uncorrectable_errors; /* # of errors where either no intact 150 * copy was found or the writeback 151 * failed */ 152 __u64 corrected_errors; /* # of errors corrected */ 153 __u64 last_physical; /* last physical address scrubbed. In 154 * case a scrub was aborted, this can 155 * be used to restart the scrub */ 156 __u64 unverified_errors; /* # of occurences where a read for a 157 * full (64k) bio failed, but the re- 158 * check succeeded for each 4k piece. 159 * Intermittent error. */ 160 }; 161 162 #define BTRFS_SCRUB_READONLY 1 163 struct btrfs_ioctl_scrub_args { 164 __u64 devid; /* in */ 165 __u64 start; /* in */ 166 __u64 end; /* in */ 167 __u64 flags; /* in */ 168 struct btrfs_scrub_progress progress; /* out */ 169 /* pad to 1k */ 170 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; 171 }; 172 173 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 174 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 175 struct btrfs_ioctl_dev_replace_start_params { 176 __u64 srcdevid; /* in, if 0, use srcdev_name instead */ 177 __u64 cont_reading_from_srcdev_mode; /* in, see #define 178 * above */ 179 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 180 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 181 }; 182 183 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 184 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 185 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 186 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 187 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 188 struct btrfs_ioctl_dev_replace_status_params { 189 __u64 replace_state; /* out, see #define above */ 190 __u64 progress_1000; /* out, 0 <= x <= 1000 */ 191 __u64 time_started; /* out, seconds since 1-Jan-1970 */ 192 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ 193 __u64 num_write_errors; /* out */ 194 __u64 num_uncorrectable_read_errors; /* out */ 195 }; 196 197 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 198 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 199 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 200 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 201 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 202 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 203 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 204 struct btrfs_ioctl_dev_replace_args { 205 __u64 cmd; /* in */ 206 __u64 result; /* out */ 207 208 union { 209 struct btrfs_ioctl_dev_replace_start_params start; 210 struct btrfs_ioctl_dev_replace_status_params status; 211 }; /* in/out */ 212 213 __u64 spare[64]; 214 }; 215 216 struct btrfs_ioctl_dev_info_args { 217 __u64 devid; /* in/out */ 218 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ 219 __u64 bytes_used; /* out */ 220 __u64 total_bytes; /* out */ 221 __u64 unused[379]; /* pad to 4k */ 222 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ 223 }; 224 225 struct btrfs_ioctl_fs_info_args { 226 __u64 max_id; /* out */ 227 __u64 num_devices; /* out */ 228 __u8 fsid[BTRFS_FSID_SIZE]; /* out */ 229 __u32 nodesize; /* out */ 230 __u32 sectorsize; /* out */ 231 __u32 clone_alignment; /* out */ 232 __u32 reserved32; 233 __u64 reserved[122]; /* pad to 1k */ 234 }; 235 236 /* 237 * feature flags 238 * 239 * Used by: 240 * struct btrfs_ioctl_feature_flags 241 */ 242 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) 243 244 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) 245 #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) 246 #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) 247 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) 248 /* 249 * some patches floated around with a second compression method 250 * lets save that incompat here for when they do get in 251 * Note we don't actually support it, we're just reserving the 252 * number 253 */ 254 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) 255 256 /* 257 * older kernels tried to do bigger metadata blocks, but the 258 * code was pretty buggy. Lets not let them try anymore. 259 */ 260 #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) 261 262 #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) 263 #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) 264 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) 265 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) 266 267 struct btrfs_ioctl_feature_flags { 268 __u64 compat_flags; 269 __u64 compat_ro_flags; 270 __u64 incompat_flags; 271 }; 272 273 /* balance control ioctl modes */ 274 #define BTRFS_BALANCE_CTL_PAUSE 1 275 #define BTRFS_BALANCE_CTL_CANCEL 2 276 277 /* 278 * this is packed, because it should be exactly the same as its disk 279 * byte order counterpart (struct btrfs_disk_balance_args) 280 */ 281 struct btrfs_balance_args { 282 __u64 profiles; 283 union { 284 __le64 usage; 285 struct { 286 __le32 usage_min; 287 __le32 usage_max; 288 }; 289 }; 290 __u64 devid; 291 __u64 pstart; 292 __u64 pend; 293 __u64 vstart; 294 __u64 vend; 295 296 __u64 target; 297 298 __u64 flags; 299 300 /* 301 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' 302 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum 303 * and maximum 304 */ 305 union { 306 __u64 limit; /* limit number of processed chunks */ 307 struct { 308 __u32 limit_min; 309 __u32 limit_max; 310 }; 311 }; 312 313 /* 314 * Process chunks that cross stripes_min..stripes_max devices, 315 * BTRFS_BALANCE_ARGS_STRIPES_RANGE 316 */ 317 __le32 stripes_min; 318 __le32 stripes_max; 319 320 __u64 unused[6]; 321 } __attribute__ ((__packed__)); 322 323 /* report balance progress to userspace */ 324 struct btrfs_balance_progress { 325 __u64 expected; /* estimated # of chunks that will be 326 * relocated to fulfill the request */ 327 __u64 considered; /* # of chunks we have considered so far */ 328 __u64 completed; /* # of chunks relocated so far */ 329 }; 330 331 /* 332 * flags definition for balance 333 * 334 * Restriper's general type filter 335 * 336 * Used by: 337 * btrfs_ioctl_balance_args.flags 338 * btrfs_balance_control.flags (internal) 339 */ 340 #define BTRFS_BALANCE_DATA (1ULL << 0) 341 #define BTRFS_BALANCE_SYSTEM (1ULL << 1) 342 #define BTRFS_BALANCE_METADATA (1ULL << 2) 343 344 #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ 345 BTRFS_BALANCE_SYSTEM | \ 346 BTRFS_BALANCE_METADATA) 347 348 #define BTRFS_BALANCE_FORCE (1ULL << 3) 349 #define BTRFS_BALANCE_RESUME (1ULL << 4) 350 351 /* 352 * flags definitions for per-type balance args 353 * 354 * Balance filters 355 * 356 * Used by: 357 * struct btrfs_balance_args 358 */ 359 #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) 360 #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) 361 #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) 362 #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) 363 #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) 364 #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) 365 #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) 366 #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) 367 #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) 368 369 #define BTRFS_BALANCE_ARGS_MASK \ 370 (BTRFS_BALANCE_ARGS_PROFILES | \ 371 BTRFS_BALANCE_ARGS_USAGE | \ 372 BTRFS_BALANCE_ARGS_DEVID | \ 373 BTRFS_BALANCE_ARGS_DRANGE | \ 374 BTRFS_BALANCE_ARGS_VRANGE | \ 375 BTRFS_BALANCE_ARGS_LIMIT | \ 376 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ 377 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ 378 BTRFS_BALANCE_ARGS_USAGE_RANGE) 379 380 /* 381 * Profile changing flags. When SOFT is set we won't relocate chunk if 382 * it already has the target profile (even though it may be 383 * half-filled). 384 */ 385 #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) 386 #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) 387 388 389 /* 390 * flags definition for balance state 391 * 392 * Used by: 393 * struct btrfs_ioctl_balance_args.state 394 */ 395 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) 396 #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) 397 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) 398 399 struct btrfs_ioctl_balance_args { 400 __u64 flags; /* in/out */ 401 __u64 state; /* out */ 402 403 struct btrfs_balance_args data; /* in/out */ 404 struct btrfs_balance_args meta; /* in/out */ 405 struct btrfs_balance_args sys; /* in/out */ 406 407 struct btrfs_balance_progress stat; /* out */ 408 409 __u64 unused[72]; /* pad to 1k */ 410 }; 411 412 #define BTRFS_INO_LOOKUP_PATH_MAX 4080 413 struct btrfs_ioctl_ino_lookup_args { 414 __u64 treeid; 415 __u64 objectid; 416 char name[BTRFS_INO_LOOKUP_PATH_MAX]; 417 }; 418 419 struct btrfs_ioctl_search_key { 420 /* which root are we searching. 0 is the tree of tree roots */ 421 __u64 tree_id; 422 423 /* keys returned will be >= min and <= max */ 424 __u64 min_objectid; 425 __u64 max_objectid; 426 427 /* keys returned will be >= min and <= max */ 428 __u64 min_offset; 429 __u64 max_offset; 430 431 /* max and min transids to search for */ 432 __u64 min_transid; 433 __u64 max_transid; 434 435 /* keys returned will be >= min and <= max */ 436 __u32 min_type; 437 __u32 max_type; 438 439 /* 440 * how many items did userland ask for, and how many are we 441 * returning 442 */ 443 __u32 nr_items; 444 445 /* align to 64 bits */ 446 __u32 unused; 447 448 /* some extra for later */ 449 __u64 unused1; 450 __u64 unused2; 451 __u64 unused3; 452 __u64 unused4; 453 }; 454 455 struct btrfs_ioctl_search_header { 456 __u64 transid; 457 __u64 objectid; 458 __u64 offset; 459 __u32 type; 460 __u32 len; 461 }; 462 463 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) 464 /* 465 * the buf is an array of search headers where 466 * each header is followed by the actual item 467 * the type field is expanded to 32 bits for alignment 468 */ 469 struct btrfs_ioctl_search_args { 470 struct btrfs_ioctl_search_key key; 471 char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; 472 }; 473 474 struct btrfs_ioctl_search_args_v2 { 475 struct btrfs_ioctl_search_key key; /* in/out - search parameters */ 476 __u64 buf_size; /* in - size of buffer 477 * out - on EOVERFLOW: needed size 478 * to store item */ 479 __u64 buf[0]; /* out - found items */ 480 }; 481 482 struct btrfs_ioctl_clone_range_args { 483 __s64 src_fd; 484 __u64 src_offset, src_length; 485 __u64 dest_offset; 486 }; 487 488 /* 489 * flags definition for the defrag range ioctl 490 * 491 * Used by: 492 * struct btrfs_ioctl_defrag_range_args.flags 493 */ 494 #define BTRFS_DEFRAG_RANGE_COMPRESS 1 495 #define BTRFS_DEFRAG_RANGE_START_IO 2 496 struct btrfs_ioctl_defrag_range_args { 497 /* start of the defrag operation */ 498 __u64 start; 499 500 /* number of bytes to defrag, use (u64)-1 to say all */ 501 __u64 len; 502 503 /* 504 * flags for the operation, which can include turning 505 * on compression for this one defrag 506 */ 507 __u64 flags; 508 509 /* 510 * any extent bigger than this will be considered 511 * already defragged. Use 0 to take the kernel default 512 * Use 1 to say every single extent must be rewritten 513 */ 514 __u32 extent_thresh; 515 516 /* 517 * which compression method to use if turning on compression 518 * for this defrag operation. If unspecified, zlib will 519 * be used 520 */ 521 __u32 compress_type; 522 523 /* spare for later */ 524 __u32 unused[4]; 525 }; 526 527 528 #define BTRFS_SAME_DATA_DIFFERS 1 529 /* For extent-same ioctl */ 530 struct btrfs_ioctl_same_extent_info { 531 __s64 fd; /* in - destination file */ 532 __u64 logical_offset; /* in - start of extent in destination */ 533 __u64 bytes_deduped; /* out - total # of bytes we were able 534 * to dedupe from this file */ 535 /* status of this dedupe operation: 536 * 0 if dedup succeeds 537 * < 0 for error 538 * == BTRFS_SAME_DATA_DIFFERS if data differs 539 */ 540 __s32 status; /* out - see above description */ 541 __u32 reserved; 542 }; 543 544 struct btrfs_ioctl_same_args { 545 __u64 logical_offset; /* in - start of extent in source */ 546 __u64 length; /* in - length of extent */ 547 __u16 dest_count; /* in - total elements in info array */ 548 __u16 reserved1; 549 __u32 reserved2; 550 struct btrfs_ioctl_same_extent_info info[0]; 551 }; 552 553 struct btrfs_ioctl_space_info { 554 __u64 flags; 555 __u64 total_bytes; 556 __u64 used_bytes; 557 }; 558 559 struct btrfs_ioctl_space_args { 560 __u64 space_slots; 561 __u64 total_spaces; 562 struct btrfs_ioctl_space_info spaces[0]; 563 }; 564 565 struct btrfs_data_container { 566 __u32 bytes_left; /* out -- bytes not needed to deliver output */ 567 __u32 bytes_missing; /* out -- additional bytes needed for result */ 568 __u32 elem_cnt; /* out */ 569 __u32 elem_missed; /* out */ 570 __u64 val[0]; /* out */ 571 }; 572 573 struct btrfs_ioctl_ino_path_args { 574 __u64 inum; /* in */ 575 __u64 size; /* in */ 576 __u64 reserved[4]; 577 /* struct btrfs_data_container *fspath; out */ 578 __u64 fspath; /* out */ 579 }; 580 581 struct btrfs_ioctl_logical_ino_args { 582 __u64 logical; /* in */ 583 __u64 size; /* in */ 584 __u64 reserved[4]; 585 /* struct btrfs_data_container *inodes; out */ 586 __u64 inodes; 587 }; 588 589 enum btrfs_dev_stat_values { 590 /* disk I/O failure stats */ 591 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ 592 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ 593 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ 594 595 /* stats for indirect indications for I/O failures */ 596 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or 597 * contents is illegal: this is an 598 * indication that the block was damaged 599 * during read or write, or written to 600 * wrong location or read from wrong 601 * location */ 602 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not 603 * been written */ 604 605 BTRFS_DEV_STAT_VALUES_MAX 606 }; 607 608 /* Reset statistics after reading; needs SYS_ADMIN capability */ 609 #define BTRFS_DEV_STATS_RESET (1ULL << 0) 610 611 struct btrfs_ioctl_get_dev_stats { 612 __u64 devid; /* in */ 613 __u64 nr_items; /* in/out */ 614 __u64 flags; /* in/out */ 615 616 /* out values: */ 617 __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; 618 619 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */ 620 }; 621 622 #define BTRFS_QUOTA_CTL_ENABLE 1 623 #define BTRFS_QUOTA_CTL_DISABLE 2 624 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 625 struct btrfs_ioctl_quota_ctl_args { 626 __u64 cmd; 627 __u64 status; 628 }; 629 630 struct btrfs_ioctl_quota_rescan_args { 631 __u64 flags; 632 __u64 progress; 633 __u64 reserved[6]; 634 }; 635 636 struct btrfs_ioctl_qgroup_assign_args { 637 __u64 assign; 638 __u64 src; 639 __u64 dst; 640 }; 641 642 struct btrfs_ioctl_qgroup_create_args { 643 __u64 create; 644 __u64 qgroupid; 645 }; 646 struct btrfs_ioctl_timespec { 647 __u64 sec; 648 __u32 nsec; 649 }; 650 651 struct btrfs_ioctl_received_subvol_args { 652 char uuid[BTRFS_UUID_SIZE]; /* in */ 653 __u64 stransid; /* in */ 654 __u64 rtransid; /* out */ 655 struct btrfs_ioctl_timespec stime; /* in */ 656 struct btrfs_ioctl_timespec rtime; /* out */ 657 __u64 flags; /* in */ 658 __u64 reserved[16]; /* in */ 659 }; 660 661 /* 662 * Caller doesn't want file data in the send stream, even if the 663 * search of clone sources doesn't find an extent. UPDATE_EXTENT 664 * commands will be sent instead of WRITE commands. 665 */ 666 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 667 668 /* 669 * Do not add the leading stream header. Used when multiple snapshots 670 * are sent back to back. 671 */ 672 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 673 674 /* 675 * Omit the command at the end of the stream that indicated the end 676 * of the stream. This option is used when multiple snapshots are 677 * sent back to back. 678 */ 679 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 680 681 #define BTRFS_SEND_FLAG_MASK \ 682 (BTRFS_SEND_FLAG_NO_FILE_DATA | \ 683 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ 684 BTRFS_SEND_FLAG_OMIT_END_CMD) 685 686 struct btrfs_ioctl_send_args { 687 __s64 send_fd; /* in */ 688 __u64 clone_sources_count; /* in */ 689 __u64 __user *clone_sources; /* in */ 690 __u64 parent_root; /* in */ 691 __u64 flags; /* in */ 692 __u64 reserved[4]; /* in */ 693 }; 694 695 /* Error codes as returned by the kernel */ 696 enum btrfs_err_code { 697 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, 698 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, 699 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, 700 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, 701 BTRFS_ERROR_DEV_TGT_REPLACE, 702 BTRFS_ERROR_DEV_MISSING_NOT_FOUND, 703 BTRFS_ERROR_DEV_ONLY_WRITABLE, 704 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS 705 }; 706 /* An error code to error string mapping for the kernel 707 * error codes 708 */ 709 static inline char *btrfs_err_str(enum btrfs_err_code err_code) 710 { 711 switch (err_code) { 712 case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET: 713 return "unable to go below two devices on raid1"; 714 case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET: 715 return "unable to go below four devices on raid10"; 716 case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET: 717 return "unable to go below two devices on raid5"; 718 case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET: 719 return "unable to go below three devices on raid6"; 720 case BTRFS_ERROR_DEV_TGT_REPLACE: 721 return "unable to remove the dev_replace target dev"; 722 case BTRFS_ERROR_DEV_MISSING_NOT_FOUND: 723 return "no missing devices found to remove"; 724 case BTRFS_ERROR_DEV_ONLY_WRITABLE: 725 return "unable to remove the only writeable device"; 726 case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS: 727 return "add/delete/balance/replace/resize operation "\ 728 "in progress"; 729 default: 730 return NULL; 731 } 732 } 733 734 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ 735 struct btrfs_ioctl_vol_args) 736 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ 737 struct btrfs_ioctl_vol_args) 738 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ 739 struct btrfs_ioctl_vol_args) 740 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ 741 struct btrfs_ioctl_vol_args) 742 /* trans start and trans end are dangerous, and only for 743 * use by applications that know how to avoid the 744 * resulting deadlocks 745 */ 746 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) 747 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) 748 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) 749 750 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) 751 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ 752 struct btrfs_ioctl_vol_args) 753 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ 754 struct btrfs_ioctl_vol_args) 755 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ 756 struct btrfs_ioctl_vol_args) 757 758 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ 759 struct btrfs_ioctl_clone_range_args) 760 761 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ 762 struct btrfs_ioctl_vol_args) 763 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ 764 struct btrfs_ioctl_vol_args) 765 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ 766 struct btrfs_ioctl_defrag_range_args) 767 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 768 struct btrfs_ioctl_search_args) 769 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 770 struct btrfs_ioctl_search_args_v2) 771 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ 772 struct btrfs_ioctl_ino_lookup_args) 773 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) 774 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ 775 struct btrfs_ioctl_space_args) 776 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) 777 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) 778 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ 779 struct btrfs_ioctl_vol_args_v2) 780 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ 781 struct btrfs_ioctl_vol_args_v2) 782 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) 783 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) 784 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ 785 struct btrfs_ioctl_scrub_args) 786 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) 787 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ 788 struct btrfs_ioctl_scrub_args) 789 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ 790 struct btrfs_ioctl_dev_info_args) 791 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ 792 struct btrfs_ioctl_fs_info_args) 793 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ 794 struct btrfs_ioctl_balance_args) 795 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) 796 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ 797 struct btrfs_ioctl_balance_args) 798 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ 799 struct btrfs_ioctl_ino_path_args) 800 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ 801 struct btrfs_ioctl_ino_path_args) 802 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ 803 struct btrfs_ioctl_received_subvol_args) 804 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) 805 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ 806 struct btrfs_ioctl_vol_args) 807 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ 808 struct btrfs_ioctl_quota_ctl_args) 809 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ 810 struct btrfs_ioctl_qgroup_assign_args) 811 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ 812 struct btrfs_ioctl_qgroup_create_args) 813 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ 814 struct btrfs_ioctl_qgroup_limit_args) 815 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ 816 struct btrfs_ioctl_quota_rescan_args) 817 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ 818 struct btrfs_ioctl_quota_rescan_args) 819 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) 820 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \ 821 char[BTRFS_LABEL_SIZE]) 822 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \ 823 char[BTRFS_LABEL_SIZE]) 824 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ 825 struct btrfs_ioctl_get_dev_stats) 826 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ 827 struct btrfs_ioctl_dev_replace_args) 828 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ 829 struct btrfs_ioctl_same_args) 830 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 831 struct btrfs_ioctl_feature_flags) 832 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 833 struct btrfs_ioctl_feature_flags[2]) 834 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 835 struct btrfs_ioctl_feature_flags[3]) 836 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ 837 struct btrfs_ioctl_vol_args_v2) 838 839 #endif /* _UAPI_LINUX_BTRFS_H */ 840