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