ioctl.h

   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 __BTRFS_IOCTL_H__
  20 #define __BTRFS_IOCTL_H__
  21
  22 #include <asm/types.h>
  23 #include <linux/ioctl.h>
  24 #include <time.h>
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #ifndef __user
  31 #define __user
  32 #endif
  33
  34 #define BTRFS_IOCTL_MAGIC 0x94
  35 #define BTRFS_VOL_NAME_MAX 255
  36
  37 /* this should be 4k */
  38 #define BTRFS_PATH_NAME_MAX 4087
  39 struct btrfs_ioctl_vol_args {
  40         __s64 fd;
  41         char name[BTRFS_PATH_NAME_MAX + 1];
  42 };
  43
  44 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
  45
  46 #define BTRFS_SUBVOL_CREATE_ASYNC       (1ULL << 0)
  47 #define BTRFS_SUBVOL_RDONLY             (1ULL << 1)
  48 #define BTRFS_SUBVOL_QGROUP_INHERIT     (1ULL << 2)
  49 #define BTRFS_FSID_SIZE 16
  50 #define BTRFS_UUID_SIZE 16
  51
  52 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
  53
  54 struct btrfs_qgroup_limit {
  55         __u64   flags;
  56         __u64   max_referenced;
  57         __u64   max_exclusive;
  58         __u64   rsv_referenced;
  59         __u64   rsv_exclusive;
  60 };
  61
  62 struct btrfs_qgroup_inherit {
  63         __u64   flags;
  64         __u64   num_qgroups;
  65         __u64   num_ref_copies;
  66         __u64   num_excl_copies;
  67         struct btrfs_qgroup_limit lim;
  68         __u64   qgroups[0];
  69 };
  70
  71 struct btrfs_ioctl_qgroup_limit_args {
  72         __u64   qgroupid;
  73         struct btrfs_qgroup_limit lim;
  74 };
  75
  76 #define BTRFS_SUBVOL_NAME_MAX 4039
  77 struct btrfs_ioctl_vol_args_v2 {
  78         __s64 fd;
  79         __u64 transid;
  80         __u64 flags;
  81         union {
  82                 struct {
  83                         __u64 size;
  84                         struct btrfs_qgroup_inherit __user *qgroup_inherit;
  85                 };
  86                 __u64 unused[4];
  87         };
  88         char name[BTRFS_SUBVOL_NAME_MAX + 1];
  89 };
  90
  91 /*
  92  * structure to report errors and progress to userspace, either as a
  93  * result of a finished scrub, a canceled scrub or a progress inquiry
  94  */
  95 struct btrfs_scrub_progress {
  96         __u64 data_extents_scrubbed;    /* # of data extents scrubbed */
  97         __u64 tree_extents_scrubbed;    /* # of tree extents scrubbed */
  98         __u64 data_bytes_scrubbed;      /* # of data bytes scrubbed */
  99         __u64 tree_bytes_scrubbed;      /* # of tree bytes scrubbed */
 100         __u64 read_errors;              /* # of read errors encountered (EIO) */
 101         __u64 csum_errors;              /* # of failed csum checks */
 102         __u64 verify_errors;            /* # of occurences, where the metadata
 103                                          * of a tree block did not match the
 104                                          * expected values, like generation or
 105                                          * logical */
 106         __u64 no_csum;                  /* # of 4k data block for which no csum
 107                                          * is present, probably the result of
 108                                          * data written with nodatasum */
 109         __u64 csum_discards;            /* # of csum for which no data was found
 110                                          * in the extent tree. */
 111         __u64 super_errors;             /* # of bad super blocks encountered */
 112         __u64 malloc_errors;            /* # of internal kmalloc errors. These
 113                                          * will likely cause an incomplete
 114                                          * scrub */
 115         __u64 uncorrectable_errors;     /* # of errors where either no intact
 116                                          * copy was found or the writeback
 117                                          * failed */
 118         __u64 corrected_errors;         /* # of errors corrected */
 119         __u64 last_physical;            /* last physical address scrubbed. In
 120                                          * case a scrub was aborted, this can
 121                                          * be used to restart the scrub */
 122         __u64 unverified_errors;        /* # of occurences where a read for a
 123                                          * full (64k) bio failed, but the re-
 124                                          * check succeeded for each 4k piece.
 125                                          * Intermittent error. */
 126 };
 127
 128 #define BTRFS_SCRUB_READONLY    1
 129 struct btrfs_ioctl_scrub_args {
 130         __u64 devid;                            /* in */
 131         __u64 start;                            /* in */
 132         __u64 end;                              /* in */
 133         __u64 flags;                            /* in */
 134         struct btrfs_scrub_progress progress;   /* out */
 135         /* pad to 1k */
 136         __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
 137 };
 138
 139 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS    0
 140 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID     1
 141 struct btrfs_ioctl_dev_replace_start_params {
 142         __u64 srcdevid; /* in, if 0, use srcdev_name instead */
 143         __u64 cont_reading_from_srcdev_mode;    /* in, see #define
 144                                                  * above */
 145         __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];       /* in */
 146         __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];       /* in */
 147 };
 148
 149 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED     0
 150 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED           1
 151 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED          2
 152 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED          3
 153 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED         4
 154 struct btrfs_ioctl_dev_replace_status_params {
 155         __u64 replace_state;    /* out, see #define above */
 156         __u64 progress_1000;    /* out, 0 <= x <= 1000 */
 157         __u64 time_started;     /* out, seconds since 1-Jan-1970 */
 158         __u64 time_stopped;     /* out, seconds since 1-Jan-1970 */
 159         __u64 num_write_errors; /* out */
 160         __u64 num_uncorrectable_read_errors;    /* out */
 161 };
 162
 163 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START                       0
 164 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS                      1
 165 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL                      2
 166 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT                -1
 167 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR                 0
 168 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED              1
 169 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED          2
 170 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS         3
 171 struct btrfs_ioctl_dev_replace_args {
 172         __u64 cmd;      /* in */
 173         __u64 result;   /* out */
 174
 175         union {
 176                 struct btrfs_ioctl_dev_replace_start_params start;
 177                 struct btrfs_ioctl_dev_replace_status_params status;
 178         };      /* in/out */
 179
 180         __u64 spare[64];
 181 };
 182
 183 struct btrfs_ioctl_dev_info_args {
 184         __u64 devid;                            /* in/out */
 185         __u8 uuid[BTRFS_UUID_SIZE];             /* in/out */
 186         __u64 bytes_used;                       /* out */
 187         __u64 total_bytes;                      /* out */
 188         __u64 unused[379];                      /* pad to 4k */
 189         __u8 path[BTRFS_DEVICE_PATH_NAME_MAX];  /* out */
 190 };
 191
 192 struct btrfs_ioctl_fs_info_args {
 193         __u64 max_id;                           /* out */
 194         __u64 num_devices;                      /* out */
 195         __u8 fsid[BTRFS_FSID_SIZE];             /* out */
 196         __u32 nodesize;                         /* out */
 197         __u32 sectorsize;                       /* out */
 198         __u32 clone_alignment;                  /* out */
 199         __u32 reserved32;
 200         __u64 reserved[122];                    /* pad to 1k */
 201 };
 202
 203 struct btrfs_ioctl_feature_flags {
 204         __u64 compat_flags;
 205         __u64 compat_ro_flags;
 206         __u64 incompat_flags;
 207 };
 208
 209 /* balance control ioctl modes */
 210 #define BTRFS_BALANCE_CTL_PAUSE         1
 211 #define BTRFS_BALANCE_CTL_CANCEL        2
 212 #define BTRFS_BALANCE_CTL_RESUME        3
 213
 214 /*
 215  * this is packed, because it should be exactly the same as its disk
 216  * byte order counterpart (struct btrfs_disk_balance_args)
 217  */
 218 struct btrfs_balance_args {
 219         __u64 profiles;
 220         __u64 usage;
 221         __u64 devid;
 222         __u64 pstart;
 223         __u64 pend;
 224         __u64 vstart;
 225         __u64 vend;
 226
 227         __u64 target;
 228
 229         __u64 flags;
 230
 231         __u64 limit;            /* limit number of processed chunks */
 232         __u64 unused[7];
 233 } __attribute__ ((__packed__));
 234
 235 /* report balance progress to userspace */
 236 struct btrfs_balance_progress {
 237         __u64 expected;         /* estimated # of chunks that will be
 238                                  * relocated to fulfill the request */
 239         __u64 considered;       /* # of chunks we have considered so far */
 240         __u64 completed;        /* # of chunks relocated so far */
 241 };
 242
 243 #define BTRFS_BALANCE_STATE_RUNNING     (1ULL << 0)
 244 #define BTRFS_BALANCE_STATE_PAUSE_REQ   (1ULL << 1)
 245 #define BTRFS_BALANCE_STATE_CANCEL_REQ  (1ULL << 2)
 246
 247 struct btrfs_ioctl_balance_args {
 248         __u64 flags;                            /* in/out */
 249         __u64 state;                            /* out */
 250
 251         struct btrfs_balance_args data;         /* in/out */
 252         struct btrfs_balance_args meta;         /* in/out */
 253         struct btrfs_balance_args sys;          /* in/out */
 254
 255         struct btrfs_balance_progress stat;     /* out */
 256
 257         __u64 unused[72];                       /* pad to 1k */
 258 };
 259
 260 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
 261 struct btrfs_ioctl_ino_lookup_args {
 262         __u64 treeid;
 263         __u64 objectid;
 264         char name[BTRFS_INO_LOOKUP_PATH_MAX];
 265 };
 266
 267 struct btrfs_ioctl_search_key {
 268         /* which root are we searching.  0 is the tree of tree roots */
 269         __u64 tree_id;
 270
 271         /* keys returned will be >= min and <= max */
 272         __u64 min_objectid;
 273         __u64 max_objectid;
 274
 275         /* keys returned will be >= min and <= max */
 276         __u64 min_offset;
 277         __u64 max_offset;
 278
 279         /* max and min transids to search for */
 280         __u64 min_transid;
 281         __u64 max_transid;
 282
 283         /* keys returned will be >= min and <= max */
 284         __u32 min_type;
 285         __u32 max_type;
 286
 287         /*
 288          * how many items did userland ask for, and how many are we
 289          * returning
 290          */
 291         __u32 nr_items;
 292
 293         /* align to 64 bits */
 294         __u32 unused;
 295
 296         /* some extra for later */
 297         __u64 unused1;
 298         __u64 unused2;
 299         __u64 unused3;
 300         __u64 unused4;
 301 };
 302
 303 struct btrfs_ioctl_search_header {
 304         __u64 transid;
 305         __u64 objectid;
 306         __u64 offset;
 307         __u32 type;
 308         __u32 len;
 309 } __attribute__((may_alias));
 310
 311 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
 312 /*
 313  * the buf is an array of search headers where
 314  * each header is followed by the actual item
 315  * the type field is expanded to 32 bits for alignment
 316  */
 317 struct btrfs_ioctl_search_args {
 318         struct btrfs_ioctl_search_key key;
 319         char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
 320 };
 321
 322 /*
 323  * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes.
 324  * The allocated size of the buffer is set in buf_size.
 325  */
 326 struct btrfs_ioctl_search_args_v2 {
 327         struct btrfs_ioctl_search_key key; /* in/out - search parameters */
 328         __u64 buf_size;                    /* in - size of buffer
 329                                             * out - on EOVERFLOW: needed size
 330                                             *       to store item */
 331         __u64 buf[0];                      /* out - found items */
 332 };
 333
 334 /* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
 335 struct btrfs_ioctl_clone_range_args {
 336         __s64 src_fd;
 337         __u64 src_offset, src_length;
 338         __u64 dest_offset;
 339 };
 340
 341 /* flags for the defrag range ioctl */
 342 #define BTRFS_DEFRAG_RANGE_COMPRESS 1
 343 #define BTRFS_DEFRAG_RANGE_START_IO 2
 344
 345 #define BTRFS_SAME_DATA_DIFFERS 1
 346 /* For extent-same ioctl */
 347 struct btrfs_ioctl_same_extent_info {
 348         __s64 fd;               /* in - destination file */
 349         __u64 logical_offset;   /* in - start of extent in destination */
 350         __u64 bytes_deduped;    /* out - total # of bytes we were able
 351                                  * to dedupe from this file */
 352         /* status of this dedupe operation:
 353          * 0 if dedup succeeds
 354          * < 0 for error
 355          * == BTRFS_SAME_DATA_DIFFERS if data differs
 356          */
 357         __s32 status;           /* out - see above description */
 358         __u32 reserved;
 359 };
 360
 361 struct btrfs_ioctl_same_args {
 362         __u64 logical_offset;   /* in - start of extent in source */
 363         __u64 length;           /* in - length of extent */
 364         __u16 dest_count;       /* in - total elements in info array */
 365         __u16 reserved1;
 366         __u32 reserved2;
 367         struct btrfs_ioctl_same_extent_info info[0];
 368 };
 369
 370 struct btrfs_ioctl_defrag_range_args {
 371         /* start of the defrag operation */
 372         __u64 start;
 373
 374         /* number of bytes to defrag, use (u64)-1 to say all */
 375         __u64 len;
 376
 377         /*
 378          * flags for the operation, which can include turning
 379          * on compression for this one defrag
 380          */
 381         __u64 flags;
 382
 383         /*
 384          * any extent bigger than this will be considered
 385          * already defragged.  Use 0 to take the kernel default
 386          * Use 1 to say every single extent must be rewritten
 387          */
 388         __u32 extent_thresh;
 389
 390         /*
 391          * which compression method to use if turning on compression
 392          * for this defrag operation.  If unspecified, zlib will
 393          * be used
 394          */
 395         __u32 compress_type;
 396
 397         /* spare for later */
 398         __u32 unused[4];
 399 };
 400
 401 struct btrfs_ioctl_space_info {
 402         __u64 flags;
 403         __u64 total_bytes;
 404         __u64 used_bytes;
 405 };
 406
 407 struct btrfs_ioctl_space_args {
 408         __u64 space_slots;
 409         __u64 total_spaces;
 410         struct btrfs_ioctl_space_info spaces[0];
 411 };
 412
 413 struct btrfs_data_container {
 414         __u32   bytes_left;     /* out -- bytes not needed to deliver output */
 415         __u32   bytes_missing;  /* out -- additional bytes needed for result */
 416         __u32   elem_cnt;       /* out */
 417         __u32   elem_missed;    /* out */
 418         __u64   val[0];         /* out */
 419 };
 420
 421 struct btrfs_ioctl_ino_path_args {
 422         __u64                           inum;           /* in */
 423         __u64                           size;           /* in */
 424         __u64                           reserved[4];
 425         /* struct btrfs_data_container  *fspath;           out */
 426         __u64                           fspath;         /* out */
 427 };
 428
 429 struct btrfs_ioctl_logical_ino_args {
 430         __u64                           logical;        /* in */
 431         __u64                           size;           /* in */
 432         __u64                           reserved[4];
 433         /* struct btrfs_data_container  *inodes;        out   */
 434         __u64                           inodes;
 435 };
 436
 437 enum btrfs_dev_stat_values {
 438         /* disk I/O failure stats */
 439         BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
 440         BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
 441         BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
 442
 443         /* stats for indirect indications for I/O failures */
 444         BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
 445                                          * contents is illegal: this is an
 446                                          * indication that the block was damaged
 447                                          * during read or write, or written to
 448                                          * wrong location or read from wrong
 449                                          * location */
 450         BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
 451                                          * been written */
 452
 453         BTRFS_DEV_STAT_VALUES_MAX
 454 };
 455
 456 /* Reset statistics after reading; needs SYS_ADMIN capability */
 457 #define BTRFS_DEV_STATS_RESET           (1ULL << 0)
 458
 459 struct btrfs_ioctl_get_dev_stats {
 460         __u64 devid;                            /* in */
 461         __u64 nr_items;                         /* in/out */
 462         __u64 flags;                            /* in/out */
 463
 464         /* out values: */
 465         __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
 466
 467         __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
 468 };
 469
 470 /* BTRFS_IOC_SNAP_CREATE is no longer used by the btrfs command */
 471 #define BTRFS_QUOTA_CTL_ENABLE  1
 472 #define BTRFS_QUOTA_CTL_DISABLE 2
 473 /* 3 has formerly been reserved for BTRFS_QUOTA_CTL_RESCAN */
 474 struct btrfs_ioctl_quota_ctl_args {
 475         __u64 cmd;
 476         __u64 status;
 477 };
 478
 479 struct btrfs_ioctl_quota_rescan_args {
 480         __u64   flags;
 481         __u64   progress;
 482         __u64   reserved[6];
 483 };
 484
 485 struct btrfs_ioctl_qgroup_assign_args {
 486         __u64 assign;
 487         __u64 src;
 488         __u64 dst;
 489 };
 490
 491 struct btrfs_ioctl_qgroup_create_args {
 492         __u64 create;
 493         __u64 qgroupid;
 494 };
 495 struct btrfs_ioctl_timespec {
 496         __u64 sec;
 497         __u32 nsec;
 498 };
 499
 500 struct btrfs_ioctl_received_subvol_args {
 501         char    uuid[BTRFS_UUID_SIZE];  /* in */
 502         __u64   stransid;               /* in */
 503         __u64   rtransid;               /* out */
 504         struct btrfs_ioctl_timespec stime; /* in */
 505         struct btrfs_ioctl_timespec rtime; /* out */
 506         __u64   flags;                  /* in */
 507         __u64   reserved[16];           /* in */
 508 };
 509
 510 /*
 511  * Caller doesn't want file data in the send stream, even if the
 512  * search of clone sources doesn't find an extent. UPDATE_EXTENT
 513  * commands will be sent instead of WRITE commands.
 514  */
 515 #define BTRFS_SEND_FLAG_NO_FILE_DATA            0x1
 516
 517 /*
 518  * Do not add the leading stream header. Used when multiple snapshots
 519  * are sent back to back.
 520  */
 521 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER      0x2
 522
 523 /*
 524  * Omit the command at the end of the stream that indicated the end
 525  * of the stream. This option is used when multiple snapshots are
 526  * sent back to back.
 527  */
 528 #define BTRFS_SEND_FLAG_OMIT_END_CMD            0x4
 529
 530 #define BTRFS_SEND_FLAG_MASK \
 531         (BTRFS_SEND_FLAG_NO_FILE_DATA | \
 532          BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
 533          BTRFS_SEND_FLAG_OMIT_END_CMD)
 534
 535 struct btrfs_ioctl_send_args {
 536         __s64 send_fd;                  /* in */
 537         __u64 clone_sources_count;      /* in */
 538         __u64 __user *clone_sources;    /* in */
 539         __u64 parent_root;              /* in */
 540         __u64 flags;                    /* in */
 541         __u64 reserved[4];              /* in */
 542 };
 543
 544 /* Error codes as returned by the kernel */
 545 enum btrfs_err_code {
 546         notused,
 547         BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
 548         BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
 549         BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
 550         BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
 551         BTRFS_ERROR_DEV_TGT_REPLACE,
 552         BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
 553         BTRFS_ERROR_DEV_ONLY_WRITABLE,
 554         BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
 555 };
 556
 557 /* An error code to error string mapping for the kernel
 558 *  error codes
 559 */
 560 static inline char *btrfs_err_str(enum btrfs_err_code err_code)
 561 {
 562         switch (err_code) {
 563                 case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET:
 564                         return "unable to go below two devices on raid1";
 565                 case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET:
 566                         return "unable to go below four devices on raid10";
 567                 case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET:
 568                         return "unable to go below two devices on raid5";
 569                 case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET:
 570                         return "unable to go below three devices on raid6";
 571                 case BTRFS_ERROR_DEV_TGT_REPLACE:
 572                         return "unable to remove the dev_replace target dev";
 573                 case BTRFS_ERROR_DEV_MISSING_NOT_FOUND:
 574                         return "no missing devices found to remove";
 575                 case BTRFS_ERROR_DEV_ONLY_WRITABLE:
 576                         return "unable to remove the only writeable device";
 577                 case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS:
 578                         return "add/delete/balance/replace/resize operation "
 579                                 "in progress";
 580                 default:
 581                         return NULL;
 582         }
 583 }
 584
 585 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
 586                                    struct btrfs_ioctl_vol_args)
 587 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
 588                                    struct btrfs_ioctl_vol_args)
 589 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
 590                                    struct btrfs_ioctl_vol_args)
 591 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
 592                                    struct btrfs_ioctl_vol_args)
 593 /* trans start and trans end are dangerous, and only for
 594  * use by applications that know how to avoid the
 595  * resulting deadlocks
 596  */
 597 #define BTRFS_IOC_TRANS_START  _IO(BTRFS_IOCTL_MAGIC, 6)
 598 #define BTRFS_IOC_TRANS_END    _IO(BTRFS_IOCTL_MAGIC, 7)
 599 #define BTRFS_IOC_SYNC         _IO(BTRFS_IOCTL_MAGIC, 8)
 600
 601 #define BTRFS_IOC_CLONE        _IOW(BTRFS_IOCTL_MAGIC, 9, int)
 602 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
 603                                    struct btrfs_ioctl_vol_args)
 604 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
 605                                    struct btrfs_ioctl_vol_args)
 606 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
 607                                    struct btrfs_ioctl_vol_args)
 608
 609 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
 610                                    struct btrfs_ioctl_clone_range_args)
 611
 612 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
 613                                    struct btrfs_ioctl_vol_args)
 614 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
 615                                    struct btrfs_ioctl_vol_args)
 616 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
 617                                 struct btrfs_ioctl_defrag_range_args)
 618 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
 619                                    struct btrfs_ioctl_search_args)
 620 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
 621                                    struct btrfs_ioctl_search_args_v2)
 622 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
 623                                    struct btrfs_ioctl_ino_lookup_args)
 624 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
 625 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
 626                                     struct btrfs_ioctl_space_args)
 627 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
 628 #define BTRFS_IOC_WAIT_SYNC  _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
 629 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
 630                                    struct btrfs_ioctl_vol_args_v2)
 631 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
 632                                    struct btrfs_ioctl_vol_args_v2)
 633 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
 634 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
 635 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
 636                                 struct btrfs_ioctl_scrub_args)
 637 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
 638 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
 639                                         struct btrfs_ioctl_scrub_args)
 640 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
 641                                         struct btrfs_ioctl_dev_info_args)
 642 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
 643                                  struct btrfs_ioctl_fs_info_args)
 644 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
 645                                    struct btrfs_ioctl_balance_args)
 646 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
 647 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
 648                                         struct btrfs_ioctl_balance_args)
 649 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
 650                                         struct btrfs_ioctl_ino_path_args)
 651 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
 652                                         struct btrfs_ioctl_ino_path_args)
 653 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
 654                                 struct btrfs_ioctl_received_subvol_args)
 655 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
 656 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
 657                                      struct btrfs_ioctl_vol_args)
 658 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
 659                                         struct btrfs_ioctl_quota_ctl_args)
 660 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
 661                                         struct btrfs_ioctl_qgroup_assign_args)
 662 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
 663                                         struct btrfs_ioctl_qgroup_create_args)
 664 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
 665                                         struct btrfs_ioctl_qgroup_limit_args)
 666 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
 667                                struct btrfs_ioctl_quota_rescan_args)
 668 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
 669                                struct btrfs_ioctl_quota_rescan_args)
 670 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
 671 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \
 672                                    char[BTRFS_LABEL_SIZE])
 673 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \
 674                                    char[BTRFS_LABEL_SIZE])
 675 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
 676                                       struct btrfs_ioctl_get_dev_stats)
 677 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
 678                                     struct btrfs_ioctl_dev_replace_args)
 679 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
 680                                          struct btrfs_ioctl_same_args)
 681 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
 682                                   struct btrfs_ioctl_feature_flags)
 683 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
 684                                   struct btrfs_ioctl_feature_flags[2])
 685 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
 686                                   struct btrfs_ioctl_feature_flags[3])
 687 #ifdef __cplusplus
 688 }
 689 #endif
 690
 691 #endif