include/uapi/linux/btrfs.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 _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
  27 /* this should be 4k */
  28 #define BTRFS_PATH_NAME_MAX 4087
  29 struct btrfs_ioctl_vol_args {
  30         __s64 fd;
  31         char name[BTRFS_PATH_NAME_MAX + 1];
  32 };
  33
  34 #define BTRFS_DEVICE_PATH_NAME_MAX 1024
  35
  36 #define BTRFS_SUBVOL_CREATE_ASYNC       (1ULL << 0)
  37 #define BTRFS_SUBVOL_RDONLY             (1ULL << 1)
  38 #define BTRFS_SUBVOL_QGROUP_INHERIT     (1ULL << 2)
  39 #define BTRFS_FSID_SIZE 16
  40 #define BTRFS_UUID_SIZE 16
  41
  42 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
  43
  44 struct btrfs_qgroup_limit {
  45         __u64   flags;
  46         __u64   max_rfer;
  47         __u64   max_excl;
  48         __u64   rsv_rfer;
  49         __u64   rsv_excl;
  50 };
  51
  52 struct btrfs_qgroup_inherit {
  53         __u64   flags;
  54         __u64   num_qgroups;
  55         __u64   num_ref_copies;
  56         __u64   num_excl_copies;
  57         struct btrfs_qgroup_limit lim;
  58         __u64   qgroups[0];
  59 };
  60
  61 struct btrfs_ioctl_qgroup_limit_args {
  62         __u64   qgroupid;
  63         struct btrfs_qgroup_limit lim;
  64 };
  65
  66 #define BTRFS_SUBVOL_NAME_MAX 4039
  67 struct btrfs_ioctl_vol_args_v2 {
  68         __s64 fd;
  69         __u64 transid;
  70         __u64 flags;
  71         union {
  72                 struct {
  73                         __u64 size;
  74                         struct btrfs_qgroup_inherit __user *qgroup_inherit;
  75                 };
  76                 __u64 unused[4];
  77         };
  78         char name[BTRFS_SUBVOL_NAME_MAX + 1];
  79 };
  80
  81 /*
  82  * structure to report errors and progress to userspace, either as a
  83  * result of a finished scrub, a canceled scrub or a progress inquiry
  84  */
  85 struct btrfs_scrub_progress {
  86         __u64 data_extents_scrubbed;    /* # of data extents scrubbed */
  87         __u64 tree_extents_scrubbed;    /* # of tree extents scrubbed */
  88         __u64 data_bytes_scrubbed;      /* # of data bytes scrubbed */
  89         __u64 tree_bytes_scrubbed;      /* # of tree bytes scrubbed */
  90         __u64 read_errors;              /* # of read errors encountered (EIO) */
  91         __u64 csum_errors;              /* # of failed csum checks */
  92         __u64 verify_errors;            /* # of occurences, where the metadata
  93                                          * of a tree block did not match the
  94                                          * expected values, like generation or
  95                                          * logical */
  96         __u64 no_csum;                  /* # of 4k data block for which no csum
  97                                          * is present, probably the result of
  98                                          * data written with nodatasum */
  99         __u64 csum_discards;            /* # of csum for which no data was found
 100                                          * in the extent tree. */
 101         __u64 super_errors;             /* # of bad super blocks encountered */
 102         __u64 malloc_errors;            /* # of internal kmalloc errors. These
 103                                          * will likely cause an incomplete
 104                                          * scrub */
 105         __u64 uncorrectable_errors;     /* # of errors where either no intact
 106                                          * copy was found or the writeback
 107                                          * failed */
 108         __u64 corrected_errors;         /* # of errors corrected */
 109         __u64 last_physical;            /* last physical address scrubbed. In
 110                                          * case a scrub was aborted, this can
 111                                          * be used to restart the scrub */
 112         __u64 unverified_errors;        /* # of occurences where a read for a
 113                                          * full (64k) bio failed, but the re-
 114                                          * check succeeded for each 4k piece.
 115                                          * Intermittent error. */
 116 };
 117
 118 #define BTRFS_SCRUB_READONLY    1
 119 struct btrfs_ioctl_scrub_args {
 120         __u64 devid;                            /* in */
 121         __u64 start;                            /* in */
 122         __u64 end;                              /* in */
 123         __u64 flags;                            /* in */
 124         struct btrfs_scrub_progress progress;   /* out */
 125         /* pad to 1k */
 126         __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
 127 };
 128
 129 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS    0
 130 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID     1
 131 struct btrfs_ioctl_dev_replace_start_params {
 132         __u64 srcdevid; /* in, if 0, use srcdev_name instead */
 133         __u64 cont_reading_from_srcdev_mode;    /* in, see #define
 134                                                  * above */
 135         __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];       /* in */
 136         __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];       /* in */
 137 };
 138
 139 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED     0
 140 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED           1
 141 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED          2
 142 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED          3
 143 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED         4
 144 struct btrfs_ioctl_dev_replace_status_params {
 145         __u64 replace_state;    /* out, see #define above */
 146         __u64 progress_1000;    /* out, 0 <= x <= 1000 */
 147         __u64 time_started;     /* out, seconds since 1-Jan-1970 */
 148         __u64 time_stopped;     /* out, seconds since 1-Jan-1970 */
 149         __u64 num_write_errors; /* out */
 150         __u64 num_uncorrectable_read_errors;    /* out */
 151 };
 152
 153 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START                       0
 154 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS                      1
 155 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL                      2
 156 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR                 0
 157 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED              1
 158 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED          2
 159 struct btrfs_ioctl_dev_replace_args {
 160         __u64 cmd;      /* in */
 161         __u64 result;   /* out */
 162
 163         union {
 164                 struct btrfs_ioctl_dev_replace_start_params start;
 165                 struct btrfs_ioctl_dev_replace_status_params status;
 166         };      /* in/out */
 167
 168         __u64 spare[64];
 169 };
 170
 171 struct btrfs_ioctl_dev_info_args {
 172         __u64 devid;                            /* in/out */
 173         __u8 uuid[BTRFS_UUID_SIZE];             /* in/out */
 174         __u64 bytes_used;                       /* out */
 175         __u64 total_bytes;                      /* out */
 176         __u64 unused[379];                      /* pad to 4k */
 177         __u8 path[BTRFS_DEVICE_PATH_NAME_MAX];  /* out */
 178 };
 179
 180 struct btrfs_ioctl_fs_info_args {
 181         __u64 max_id;                           /* out */
 182         __u64 num_devices;                      /* out */
 183         __u8 fsid[BTRFS_FSID_SIZE];             /* out */
 184         __u64 reserved[124];                    /* pad to 1k */
 185 };
 186
 187 /* balance control ioctl modes */
 188 #define BTRFS_BALANCE_CTL_PAUSE         1
 189 #define BTRFS_BALANCE_CTL_CANCEL        2
 190
 191 /*
 192  * this is packed, because it should be exactly the same as its disk
 193  * byte order counterpart (struct btrfs_disk_balance_args)
 194  */
 195 struct btrfs_balance_args {
 196         __u64 profiles;
 197         __u64 usage;
 198         __u64 devid;
 199         __u64 pstart;
 200         __u64 pend;
 201         __u64 vstart;
 202         __u64 vend;
 203
 204         __u64 target;
 205
 206         __u64 flags;
 207
 208         __u64 unused[8];
 209 } __attribute__ ((__packed__));
 210
 211 /* report balance progress to userspace */
 212 struct btrfs_balance_progress {
 213         __u64 expected;         /* estimated # of chunks that will be
 214                                  * relocated to fulfill the request */
 215         __u64 considered;       /* # of chunks we have considered so far */
 216         __u64 completed;        /* # of chunks relocated so far */
 217 };
 218
 219 #define BTRFS_BALANCE_STATE_RUNNING     (1ULL << 0)
 220 #define BTRFS_BALANCE_STATE_PAUSE_REQ   (1ULL << 1)
 221 #define BTRFS_BALANCE_STATE_CANCEL_REQ  (1ULL << 2)
 222
 223 struct btrfs_ioctl_balance_args {
 224         __u64 flags;                            /* in/out */
 225         __u64 state;                            /* out */
 226
 227         struct btrfs_balance_args data;         /* in/out */
 228         struct btrfs_balance_args meta;         /* in/out */
 229         struct btrfs_balance_args sys;          /* in/out */
 230
 231         struct btrfs_balance_progress stat;     /* out */
 232
 233         __u64 unused[72];                       /* pad to 1k */
 234 };
 235
 236 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
 237 struct btrfs_ioctl_ino_lookup_args {
 238         __u64 treeid;
 239         __u64 objectid;
 240         char name[BTRFS_INO_LOOKUP_PATH_MAX];
 241 };
 242
 243 struct btrfs_ioctl_search_key {
 244         /* which root are we searching.  0 is the tree of tree roots */
 245         __u64 tree_id;
 246
 247         /* keys returned will be >= min and <= max */
 248         __u64 min_objectid;
 249         __u64 max_objectid;
 250
 251         /* keys returned will be >= min and <= max */
 252         __u64 min_offset;
 253         __u64 max_offset;
 254
 255         /* max and min transids to search for */
 256         __u64 min_transid;
 257         __u64 max_transid;
 258
 259         /* keys returned will be >= min and <= max */
 260         __u32 min_type;
 261         __u32 max_type;
 262
 263         /*
 264          * how many items did userland ask for, and how many are we
 265          * returning
 266          */
 267         __u32 nr_items;
 268
 269         /* align to 64 bits */
 270         __u32 unused;
 271
 272         /* some extra for later */
 273         __u64 unused1;
 274         __u64 unused2;
 275         __u64 unused3;
 276         __u64 unused4;
 277 };
 278
 279 struct btrfs_ioctl_search_header {
 280         __u64 transid;
 281         __u64 objectid;
 282         __u64 offset;
 283         __u32 type;
 284         __u32 len;
 285 };
 286
 287 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
 288 /*
 289  * the buf is an array of search headers where
 290  * each header is followed by the actual item
 291  * the type field is expanded to 32 bits for alignment
 292  */
 293 struct btrfs_ioctl_search_args {
 294         struct btrfs_ioctl_search_key key;
 295         char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
 296 };
 297
 298 struct btrfs_ioctl_clone_range_args {
 299   __s64 src_fd;
 300   __u64 src_offset, src_length;
 301   __u64 dest_offset;
 302 };
 303
 304 /* flags for the defrag range ioctl */
 305 #define BTRFS_DEFRAG_RANGE_COMPRESS 1
 306 #define BTRFS_DEFRAG_RANGE_START_IO 2
 307
 308 struct btrfs_ioctl_space_info {
 309         __u64 flags;
 310         __u64 total_bytes;
 311         __u64 used_bytes;
 312 };
 313
 314 struct btrfs_ioctl_space_args {
 315         __u64 space_slots;
 316         __u64 total_spaces;
 317         struct btrfs_ioctl_space_info spaces[0];
 318 };
 319
 320 struct btrfs_data_container {
 321         __u32   bytes_left;     /* out -- bytes not needed to deliver output */
 322         __u32   bytes_missing;  /* out -- additional bytes needed for result */
 323         __u32   elem_cnt;       /* out */
 324         __u32   elem_missed;    /* out */
 325         __u64   val[0];         /* out */
 326 };
 327
 328 struct btrfs_ioctl_ino_path_args {
 329         __u64                           inum;           /* in */
 330         __u64                           size;           /* in */
 331         __u64                           reserved[4];
 332         /* struct btrfs_data_container  *fspath;           out */
 333         __u64                           fspath;         /* out */
 334 };
 335
 336 struct btrfs_ioctl_logical_ino_args {
 337         __u64                           logical;        /* in */
 338         __u64                           size;           /* in */
 339         __u64                           reserved[4];
 340         /* struct btrfs_data_container  *inodes;        out   */
 341         __u64                           inodes;
 342 };
 343
 344 enum btrfs_dev_stat_values {
 345         /* disk I/O failure stats */
 346         BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
 347         BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
 348         BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
 349
 350         /* stats for indirect indications for I/O failures */
 351         BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
 352                                          * contents is illegal: this is an
 353                                          * indication that the block was damaged
 354                                          * during read or write, or written to
 355                                          * wrong location or read from wrong
 356                                          * location */
 357         BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
 358                                          * been written */
 359
 360         BTRFS_DEV_STAT_VALUES_MAX
 361 };
 362
 363 /* Reset statistics after reading; needs SYS_ADMIN capability */
 364 #define BTRFS_DEV_STATS_RESET           (1ULL << 0)
 365
 366 struct btrfs_ioctl_get_dev_stats {
 367         __u64 devid;                            /* in */
 368         __u64 nr_items;                         /* in/out */
 369         __u64 flags;                            /* in/out */
 370
 371         /* out values: */
 372         __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
 373
 374         __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
 375 };
 376
 377 #define BTRFS_QUOTA_CTL_ENABLE  1
 378 #define BTRFS_QUOTA_CTL_DISABLE 2
 379 #define BTRFS_QUOTA_CTL_RESCAN  3
 380 struct btrfs_ioctl_quota_ctl_args {
 381         __u64 cmd;
 382         __u64 status;
 383 };
 384
 385 struct btrfs_ioctl_qgroup_assign_args {
 386         __u64 assign;
 387         __u64 src;
 388         __u64 dst;
 389 };
 390
 391 struct btrfs_ioctl_qgroup_create_args {
 392         __u64 create;
 393         __u64 qgroupid;
 394 };
 395 struct btrfs_ioctl_timespec {
 396         __u64 sec;
 397         __u32 nsec;
 398 };
 399
 400 struct btrfs_ioctl_received_subvol_args {
 401         char    uuid[BTRFS_UUID_SIZE];  /* in */
 402         __u64   stransid;               /* in */
 403         __u64   rtransid;               /* out */
 404         struct btrfs_ioctl_timespec stime; /* in */
 405         struct btrfs_ioctl_timespec rtime; /* out */
 406         __u64   flags;                  /* in */
 407         __u64   reserved[16];           /* in */
 408 };
 409
 410 /*
 411  * Caller doesn't want file data in the send stream, even if the
 412  * search of clone sources doesn't find an extent. UPDATE_EXTENT
 413  * commands will be sent instead of WRITE commands.
 414  */
 415 #define BTRFS_SEND_FLAG_NO_FILE_DATA     0x1
 416
 417 struct btrfs_ioctl_send_args {
 418         __s64 send_fd;                  /* in */
 419         __u64 clone_sources_count;      /* in */
 420         __u64 __user *clone_sources;    /* in */
 421         __u64 parent_root;              /* in */
 422         __u64 flags;                    /* in */
 423         __u64 reserved[4];              /* in */
 424 };
 425
 426 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
 427                                    struct btrfs_ioctl_vol_args)
 428 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
 429                                    struct btrfs_ioctl_vol_args)
 430 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
 431                                    struct btrfs_ioctl_vol_args)
 432 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
 433                                    struct btrfs_ioctl_vol_args)
 434 /* trans start and trans end are dangerous, and only for
 435  * use by applications that know how to avoid the
 436  * resulting deadlocks
 437  */
 438 #define BTRFS_IOC_TRANS_START  _IO(BTRFS_IOCTL_MAGIC, 6)
 439 #define BTRFS_IOC_TRANS_END    _IO(BTRFS_IOCTL_MAGIC, 7)
 440 #define BTRFS_IOC_SYNC         _IO(BTRFS_IOCTL_MAGIC, 8)
 441
 442 #define BTRFS_IOC_CLONE        _IOW(BTRFS_IOCTL_MAGIC, 9, int)
 443 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
 444                                    struct btrfs_ioctl_vol_args)
 445 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
 446                                    struct btrfs_ioctl_vol_args)
 447 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
 448                                    struct btrfs_ioctl_vol_args)
 449
 450 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
 451                                   struct btrfs_ioctl_clone_range_args)
 452
 453 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
 454                                    struct btrfs_ioctl_vol_args)
 455 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
 456                                 struct btrfs_ioctl_vol_args)
 457 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
 458                                 struct btrfs_ioctl_defrag_range_args)
 459 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
 460                                    struct btrfs_ioctl_search_args)
 461 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
 462                                    struct btrfs_ioctl_ino_lookup_args)
 463 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
 464 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
 465                                     struct btrfs_ioctl_space_args)
 466 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
 467 #define BTRFS_IOC_WAIT_SYNC  _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
 468 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
 469                                    struct btrfs_ioctl_vol_args_v2)
 470 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
 471                                    struct btrfs_ioctl_vol_args_v2)
 472 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
 473 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
 474 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
 475                               struct btrfs_ioctl_scrub_args)
 476 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
 477 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
 478                                        struct btrfs_ioctl_scrub_args)
 479 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
 480                                  struct btrfs_ioctl_dev_info_args)
 481 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
 482                                struct btrfs_ioctl_fs_info_args)
 483 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
 484                                    struct btrfs_ioctl_balance_args)
 485 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
 486 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
 487                                         struct btrfs_ioctl_balance_args)
 488 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
 489                                         struct btrfs_ioctl_ino_path_args)
 490 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
 491                                         struct btrfs_ioctl_ino_path_args)
 492 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
 493                                 struct btrfs_ioctl_received_subvol_args)
 494 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
 495 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
 496                                      struct btrfs_ioctl_vol_args)
 497 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
 498                                struct btrfs_ioctl_quota_ctl_args)
 499 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
 500                                struct btrfs_ioctl_qgroup_assign_args)
 501 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
 502                                struct btrfs_ioctl_qgroup_create_args)
 503 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
 504                                struct btrfs_ioctl_qgroup_limit_args)
 505 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \
 506                                    char[BTRFS_LABEL_SIZE])
 507 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
 508                                       struct btrfs_ioctl_get_dev_stats)
 509 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
 510                                     struct btrfs_ioctl_dev_replace_args)
 511
 512 #endif /* _UAPI_LINUX_BTRFS_H */