| 1 |
13 |
serginhofr |
/*
|
| 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 _LINUX_BTRFS_H
|
| 20 |
|
|
#define _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 *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 |
|
|
struct btrfs_ioctl_feature_flags {
|
| 188 |
|
|
__u64 compat_flags;
|
| 189 |
|
|
__u64 compat_ro_flags;
|
| 190 |
|
|
__u64 incompat_flags;
|
| 191 |
|
|
};
|
| 192 |
|
|
|
| 193 |
|
|
/* balance control ioctl modes */
|
| 194 |
|
|
#define BTRFS_BALANCE_CTL_PAUSE 1
|
| 195 |
|
|
#define BTRFS_BALANCE_CTL_CANCEL 2
|
| 196 |
|
|
|
| 197 |
|
|
/*
|
| 198 |
|
|
* this is packed, because it should be exactly the same as its disk
|
| 199 |
|
|
* byte order counterpart (struct btrfs_disk_balance_args)
|
| 200 |
|
|
*/
|
| 201 |
|
|
struct btrfs_balance_args {
|
| 202 |
|
|
__u64 profiles;
|
| 203 |
|
|
__u64 usage;
|
| 204 |
|
|
__u64 devid;
|
| 205 |
|
|
__u64 pstart;
|
| 206 |
|
|
__u64 pend;
|
| 207 |
|
|
__u64 vstart;
|
| 208 |
|
|
__u64 vend;
|
| 209 |
|
|
|
| 210 |
|
|
__u64 target;
|
| 211 |
|
|
|
| 212 |
|
|
__u64 flags;
|
| 213 |
|
|
|
| 214 |
|
|
__u64 unused[8];
|
| 215 |
|
|
} __attribute__ ((__packed__));
|
| 216 |
|
|
|
| 217 |
|
|
/* report balance progress to userspace */
|
| 218 |
|
|
struct btrfs_balance_progress {
|
| 219 |
|
|
__u64 expected; /* estimated # of chunks that will be
|
| 220 |
|
|
* relocated to fulfill the request */
|
| 221 |
|
|
__u64 considered; /* # of chunks we have considered so far */
|
| 222 |
|
|
__u64 completed; /* # of chunks relocated so far */
|
| 223 |
|
|
};
|
| 224 |
|
|
|
| 225 |
|
|
#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
|
| 226 |
|
|
#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
|
| 227 |
|
|
#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
|
| 228 |
|
|
|
| 229 |
|
|
struct btrfs_ioctl_balance_args {
|
| 230 |
|
|
__u64 flags; /* in/out */
|
| 231 |
|
|
__u64 state; /* out */
|
| 232 |
|
|
|
| 233 |
|
|
struct btrfs_balance_args data; /* in/out */
|
| 234 |
|
|
struct btrfs_balance_args meta; /* in/out */
|
| 235 |
|
|
struct btrfs_balance_args sys; /* in/out */
|
| 236 |
|
|
|
| 237 |
|
|
struct btrfs_balance_progress stat; /* out */
|
| 238 |
|
|
|
| 239 |
|
|
__u64 unused[72]; /* pad to 1k */
|
| 240 |
|
|
};
|
| 241 |
|
|
|
| 242 |
|
|
#define BTRFS_INO_LOOKUP_PATH_MAX 4080
|
| 243 |
|
|
struct btrfs_ioctl_ino_lookup_args {
|
| 244 |
|
|
__u64 treeid;
|
| 245 |
|
|
__u64 objectid;
|
| 246 |
|
|
char name[BTRFS_INO_LOOKUP_PATH_MAX];
|
| 247 |
|
|
};
|
| 248 |
|
|
|
| 249 |
|
|
struct btrfs_ioctl_search_key {
|
| 250 |
|
|
/* which root are we searching. 0 is the tree of tree roots */
|
| 251 |
|
|
__u64 tree_id;
|
| 252 |
|
|
|
| 253 |
|
|
/* keys returned will be >= min and <= max */
|
| 254 |
|
|
__u64 min_objectid;
|
| 255 |
|
|
__u64 max_objectid;
|
| 256 |
|
|
|
| 257 |
|
|
/* keys returned will be >= min and <= max */
|
| 258 |
|
|
__u64 min_offset;
|
| 259 |
|
|
__u64 max_offset;
|
| 260 |
|
|
|
| 261 |
|
|
/* max and min transids to search for */
|
| 262 |
|
|
__u64 min_transid;
|
| 263 |
|
|
__u64 max_transid;
|
| 264 |
|
|
|
| 265 |
|
|
/* keys returned will be >= min and <= max */
|
| 266 |
|
|
__u32 min_type;
|
| 267 |
|
|
__u32 max_type;
|
| 268 |
|
|
|
| 269 |
|
|
/*
|
| 270 |
|
|
* how many items did userland ask for, and how many are we
|
| 271 |
|
|
* returning
|
| 272 |
|
|
*/
|
| 273 |
|
|
__u32 nr_items;
|
| 274 |
|
|
|
| 275 |
|
|
/* align to 64 bits */
|
| 276 |
|
|
__u32 unused;
|
| 277 |
|
|
|
| 278 |
|
|
/* some extra for later */
|
| 279 |
|
|
__u64 unused1;
|
| 280 |
|
|
__u64 unused2;
|
| 281 |
|
|
__u64 unused3;
|
| 282 |
|
|
__u64 unused4;
|
| 283 |
|
|
};
|
| 284 |
|
|
|
| 285 |
|
|
struct btrfs_ioctl_search_header {
|
| 286 |
|
|
__u64 transid;
|
| 287 |
|
|
__u64 objectid;
|
| 288 |
|
|
__u64 offset;
|
| 289 |
|
|
__u32 type;
|
| 290 |
|
|
__u32 len;
|
| 291 |
|
|
};
|
| 292 |
|
|
|
| 293 |
|
|
#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
|
| 294 |
|
|
/*
|
| 295 |
|
|
* the buf is an array of search headers where
|
| 296 |
|
|
* each header is followed by the actual item
|
| 297 |
|
|
* the type field is expanded to 32 bits for alignment
|
| 298 |
|
|
*/
|
| 299 |
|
|
struct btrfs_ioctl_search_args {
|
| 300 |
|
|
struct btrfs_ioctl_search_key key;
|
| 301 |
|
|
char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
|
| 302 |
|
|
};
|
| 303 |
|
|
|
| 304 |
|
|
struct btrfs_ioctl_clone_range_args {
|
| 305 |
|
|
__s64 src_fd;
|
| 306 |
|
|
__u64 src_offset, src_length;
|
| 307 |
|
|
__u64 dest_offset;
|
| 308 |
|
|
};
|
| 309 |
|
|
|
| 310 |
|
|
/* flags for the defrag range ioctl */
|
| 311 |
|
|
#define BTRFS_DEFRAG_RANGE_COMPRESS 1
|
| 312 |
|
|
#define BTRFS_DEFRAG_RANGE_START_IO 2
|
| 313 |
|
|
|
| 314 |
|
|
#define BTRFS_SAME_DATA_DIFFERS 1
|
| 315 |
|
|
/* For extent-same ioctl */
|
| 316 |
|
|
struct btrfs_ioctl_same_extent_info {
|
| 317 |
|
|
__s64 fd; /* in - destination file */
|
| 318 |
|
|
__u64 logical_offset; /* in - start of extent in destination */
|
| 319 |
|
|
__u64 bytes_deduped; /* out - total # of bytes we were able
|
| 320 |
|
|
* to dedupe from this file */
|
| 321 |
|
|
/* status of this dedupe operation:
|
| 322 |
|
|
* 0 if dedup succeeds
|
| 323 |
|
|
* < 0 for error
|
| 324 |
|
|
* == BTRFS_SAME_DATA_DIFFERS if data differs
|
| 325 |
|
|
*/
|
| 326 |
|
|
__s32 status; /* out - see above description */
|
| 327 |
|
|
__u32 reserved;
|
| 328 |
|
|
};
|
| 329 |
|
|
|
| 330 |
|
|
struct btrfs_ioctl_same_args {
|
| 331 |
|
|
__u64 logical_offset; /* in - start of extent in source */
|
| 332 |
|
|
__u64 length; /* in - length of extent */
|
| 333 |
|
|
__u16 dest_count; /* in - total elements in info array */
|
| 334 |
|
|
__u16 reserved1;
|
| 335 |
|
|
__u32 reserved2;
|
| 336 |
|
|
struct btrfs_ioctl_same_extent_info info[0];
|
| 337 |
|
|
};
|
| 338 |
|
|
|
| 339 |
|
|
struct btrfs_ioctl_space_info {
|
| 340 |
|
|
__u64 flags;
|
| 341 |
|
|
__u64 total_bytes;
|
| 342 |
|
|
__u64 used_bytes;
|
| 343 |
|
|
};
|
| 344 |
|
|
|
| 345 |
|
|
struct btrfs_ioctl_space_args {
|
| 346 |
|
|
__u64 space_slots;
|
| 347 |
|
|
__u64 total_spaces;
|
| 348 |
|
|
struct btrfs_ioctl_space_info spaces[0];
|
| 349 |
|
|
};
|
| 350 |
|
|
|
| 351 |
|
|
struct btrfs_data_container {
|
| 352 |
|
|
__u32 bytes_left; /* out -- bytes not needed to deliver output */
|
| 353 |
|
|
__u32 bytes_missing; /* out -- additional bytes needed for result */
|
| 354 |
|
|
__u32 elem_cnt; /* out */
|
| 355 |
|
|
__u32 elem_missed; /* out */
|
| 356 |
|
|
__u64 val[0]; /* out */
|
| 357 |
|
|
};
|
| 358 |
|
|
|
| 359 |
|
|
struct btrfs_ioctl_ino_path_args {
|
| 360 |
|
|
__u64 inum; /* in */
|
| 361 |
|
|
__u64 size; /* in */
|
| 362 |
|
|
__u64 reserved[4];
|
| 363 |
|
|
/* struct btrfs_data_container *fspath; out */
|
| 364 |
|
|
__u64 fspath; /* out */
|
| 365 |
|
|
};
|
| 366 |
|
|
|
| 367 |
|
|
struct btrfs_ioctl_logical_ino_args {
|
| 368 |
|
|
__u64 logical; /* in */
|
| 369 |
|
|
__u64 size; /* in */
|
| 370 |
|
|
__u64 reserved[4];
|
| 371 |
|
|
/* struct btrfs_data_container *inodes; out */
|
| 372 |
|
|
__u64 inodes;
|
| 373 |
|
|
};
|
| 374 |
|
|
|
| 375 |
|
|
enum btrfs_dev_stat_values {
|
| 376 |
|
|
/* disk I/O failure stats */
|
| 377 |
|
|
BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
|
| 378 |
|
|
BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
|
| 379 |
|
|
BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
|
| 380 |
|
|
|
| 381 |
|
|
/* stats for indirect indications for I/O failures */
|
| 382 |
|
|
BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
|
| 383 |
|
|
* contents is illegal: this is an
|
| 384 |
|
|
* indication that the block was damaged
|
| 385 |
|
|
* during read or write, or written to
|
| 386 |
|
|
* wrong location or read from wrong
|
| 387 |
|
|
* location */
|
| 388 |
|
|
BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
|
| 389 |
|
|
* been written */
|
| 390 |
|
|
|
| 391 |
|
|
BTRFS_DEV_STAT_VALUES_MAX
|
| 392 |
|
|
};
|
| 393 |
|
|
|
| 394 |
|
|
/* Reset statistics after reading; needs SYS_ADMIN capability */
|
| 395 |
|
|
#define BTRFS_DEV_STATS_RESET (1ULL << 0)
|
| 396 |
|
|
|
| 397 |
|
|
struct btrfs_ioctl_get_dev_stats {
|
| 398 |
|
|
__u64 devid; /* in */
|
| 399 |
|
|
__u64 nr_items; /* in/out */
|
| 400 |
|
|
__u64 flags; /* in/out */
|
| 401 |
|
|
|
| 402 |
|
|
/* out values: */
|
| 403 |
|
|
__u64 values[BTRFS_DEV_STAT_VALUES_MAX];
|
| 404 |
|
|
|
| 405 |
|
|
__u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
|
| 406 |
|
|
};
|
| 407 |
|
|
|
| 408 |
|
|
#define BTRFS_QUOTA_CTL_ENABLE 1
|
| 409 |
|
|
#define BTRFS_QUOTA_CTL_DISABLE 2
|
| 410 |
|
|
#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
|
| 411 |
|
|
struct btrfs_ioctl_quota_ctl_args {
|
| 412 |
|
|
__u64 cmd;
|
| 413 |
|
|
__u64 status;
|
| 414 |
|
|
};
|
| 415 |
|
|
|
| 416 |
|
|
struct btrfs_ioctl_quota_rescan_args {
|
| 417 |
|
|
__u64 flags;
|
| 418 |
|
|
__u64 progress;
|
| 419 |
|
|
__u64 reserved[6];
|
| 420 |
|
|
};
|
| 421 |
|
|
|
| 422 |
|
|
struct btrfs_ioctl_qgroup_assign_args {
|
| 423 |
|
|
__u64 assign;
|
| 424 |
|
|
__u64 src;
|
| 425 |
|
|
__u64 dst;
|
| 426 |
|
|
};
|
| 427 |
|
|
|
| 428 |
|
|
struct btrfs_ioctl_qgroup_create_args {
|
| 429 |
|
|
__u64 create;
|
| 430 |
|
|
__u64 qgroupid;
|
| 431 |
|
|
};
|
| 432 |
|
|
struct btrfs_ioctl_timespec {
|
| 433 |
|
|
__u64 sec;
|
| 434 |
|
|
__u32 nsec;
|
| 435 |
|
|
};
|
| 436 |
|
|
|
| 437 |
|
|
struct btrfs_ioctl_received_subvol_args {
|
| 438 |
|
|
char uuid[BTRFS_UUID_SIZE]; /* in */
|
| 439 |
|
|
__u64 stransid; /* in */
|
| 440 |
|
|
__u64 rtransid; /* out */
|
| 441 |
|
|
struct btrfs_ioctl_timespec stime; /* in */
|
| 442 |
|
|
struct btrfs_ioctl_timespec rtime; /* out */
|
| 443 |
|
|
__u64 flags; /* in */
|
| 444 |
|
|
__u64 reserved[16]; /* in */
|
| 445 |
|
|
};
|
| 446 |
|
|
|
| 447 |
|
|
/*
|
| 448 |
|
|
* Caller doesn't want file data in the send stream, even if the
|
| 449 |
|
|
* search of clone sources doesn't find an extent. UPDATE_EXTENT
|
| 450 |
|
|
* commands will be sent instead of WRITE commands.
|
| 451 |
|
|
*/
|
| 452 |
|
|
#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
|
| 453 |
|
|
|
| 454 |
|
|
/*
|
| 455 |
|
|
* Do not add the leading stream header. Used when multiple snapshots
|
| 456 |
|
|
* are sent back to back.
|
| 457 |
|
|
*/
|
| 458 |
|
|
#define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
|
| 459 |
|
|
|
| 460 |
|
|
/*
|
| 461 |
|
|
* Omit the command at the end of the stream that indicated the end
|
| 462 |
|
|
* of the stream. This option is used when multiple snapshots are
|
| 463 |
|
|
* sent back to back.
|
| 464 |
|
|
*/
|
| 465 |
|
|
#define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
|
| 466 |
|
|
|
| 467 |
|
|
#define BTRFS_SEND_FLAG_MASK \
|
| 468 |
|
|
(BTRFS_SEND_FLAG_NO_FILE_DATA | \
|
| 469 |
|
|
BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
|
| 470 |
|
|
BTRFS_SEND_FLAG_OMIT_END_CMD)
|
| 471 |
|
|
|
| 472 |
|
|
struct btrfs_ioctl_send_args {
|
| 473 |
|
|
__s64 send_fd; /* in */
|
| 474 |
|
|
__u64 clone_sources_count; /* in */
|
| 475 |
|
|
__u64 *clone_sources; /* in */
|
| 476 |
|
|
__u64 parent_root; /* in */
|
| 477 |
|
|
__u64 flags; /* in */
|
| 478 |
|
|
__u64 reserved[4]; /* in */
|
| 479 |
|
|
};
|
| 480 |
|
|
|
| 481 |
|
|
/* Error codes as returned by the kernel */
|
| 482 |
|
|
enum btrfs_err_code {
|
| 483 |
|
|
notused,
|
| 484 |
|
|
BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
|
| 485 |
|
|
BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
|
| 486 |
|
|
BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
|
| 487 |
|
|
BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
|
| 488 |
|
|
BTRFS_ERROR_DEV_TGT_REPLACE,
|
| 489 |
|
|
BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
|
| 490 |
|
|
BTRFS_ERROR_DEV_ONLY_WRITABLE,
|
| 491 |
|
|
BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
|
| 492 |
|
|
};
|
| 493 |
|
|
/* An error code to error string mapping for the kernel
|
| 494 |
|
|
* error codes
|
| 495 |
|
|
*/
|
| 496 |
|
|
static __inline__ char *btrfs_err_str(enum btrfs_err_code err_code)
|
| 497 |
|
|
{
|
| 498 |
|
|
switch (err_code) {
|
| 499 |
|
|
case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET:
|
| 500 |
|
|
return "unable to go below two devices on raid1";
|
| 501 |
|
|
case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET:
|
| 502 |
|
|
return "unable to go below four devices on raid10";
|
| 503 |
|
|
case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET:
|
| 504 |
|
|
return "unable to go below two devices on raid5";
|
| 505 |
|
|
case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET:
|
| 506 |
|
|
return "unable to go below three devices on raid6";
|
| 507 |
|
|
case BTRFS_ERROR_DEV_TGT_REPLACE:
|
| 508 |
|
|
return "unable to remove the dev_replace target dev";
|
| 509 |
|
|
case BTRFS_ERROR_DEV_MISSING_NOT_FOUND:
|
| 510 |
|
|
return "no missing devices found to remove";
|
| 511 |
|
|
case BTRFS_ERROR_DEV_ONLY_WRITABLE:
|
| 512 |
|
|
return "unable to remove the only writeable device";
|
| 513 |
|
|
case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS:
|
| 514 |
|
|
return "add/delete/balance/replace/resize operation "\
|
| 515 |
|
|
"in progress";
|
| 516 |
|
|
default:
|
| 517 |
|
|
return NULL;
|
| 518 |
|
|
}
|
| 519 |
|
|
}
|
| 520 |
|
|
|
| 521 |
|
|
#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
|
| 522 |
|
|
struct btrfs_ioctl_vol_args)
|
| 523 |
|
|
#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
|
| 524 |
|
|
struct btrfs_ioctl_vol_args)
|
| 525 |
|
|
#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
|
| 526 |
|
|
struct btrfs_ioctl_vol_args)
|
| 527 |
|
|
#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
|
| 528 |
|
|
struct btrfs_ioctl_vol_args)
|
| 529 |
|
|
/* trans start and trans end are dangerous, and only for
|
| 530 |
|
|
* use by applications that know how to avoid the
|
| 531 |
|
|
* resulting deadlocks
|
| 532 |
|
|
*/
|
| 533 |
|
|
#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
|
| 534 |
|
|
#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
|
| 535 |
|
|
#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
|
| 536 |
|
|
|
| 537 |
|
|
#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
|
| 538 |
|
|
#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
|
| 539 |
|
|
struct btrfs_ioctl_vol_args)
|
| 540 |
|
|
#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
|
| 541 |
|
|
struct btrfs_ioctl_vol_args)
|
| 542 |
|
|
#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
|
| 543 |
|
|
struct btrfs_ioctl_vol_args)
|
| 544 |
|
|
|
| 545 |
|
|
#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
|
| 546 |
|
|
struct btrfs_ioctl_clone_range_args)
|
| 547 |
|
|
|
| 548 |
|
|
#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
|
| 549 |
|
|
struct btrfs_ioctl_vol_args)
|
| 550 |
|
|
#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
|
| 551 |
|
|
struct btrfs_ioctl_vol_args)
|
| 552 |
|
|
#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
|
| 553 |
|
|
struct btrfs_ioctl_defrag_range_args)
|
| 554 |
|
|
#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
|
| 555 |
|
|
struct btrfs_ioctl_search_args)
|
| 556 |
|
|
#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
|
| 557 |
|
|
struct btrfs_ioctl_ino_lookup_args)
|
| 558 |
|
|
#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
|
| 559 |
|
|
#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
|
| 560 |
|
|
struct btrfs_ioctl_space_args)
|
| 561 |
|
|
#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
|
| 562 |
|
|
#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
|
| 563 |
|
|
#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
|
| 564 |
|
|
struct btrfs_ioctl_vol_args_v2)
|
| 565 |
|
|
#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
|
| 566 |
|
|
struct btrfs_ioctl_vol_args_v2)
|
| 567 |
|
|
#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
|
| 568 |
|
|
#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
|
| 569 |
|
|
#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
|
| 570 |
|
|
struct btrfs_ioctl_scrub_args)
|
| 571 |
|
|
#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
|
| 572 |
|
|
#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
|
| 573 |
|
|
struct btrfs_ioctl_scrub_args)
|
| 574 |
|
|
#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
|
| 575 |
|
|
struct btrfs_ioctl_dev_info_args)
|
| 576 |
|
|
#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
|
| 577 |
|
|
struct btrfs_ioctl_fs_info_args)
|
| 578 |
|
|
#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
|
| 579 |
|
|
struct btrfs_ioctl_balance_args)
|
| 580 |
|
|
#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
|
| 581 |
|
|
#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
|
| 582 |
|
|
struct btrfs_ioctl_balance_args)
|
| 583 |
|
|
#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
|
| 584 |
|
|
struct btrfs_ioctl_ino_path_args)
|
| 585 |
|
|
#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
|
| 586 |
|
|
struct btrfs_ioctl_ino_path_args)
|
| 587 |
|
|
#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
|
| 588 |
|
|
struct btrfs_ioctl_received_subvol_args)
|
| 589 |
|
|
#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
|
| 590 |
|
|
#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
|
| 591 |
|
|
struct btrfs_ioctl_vol_args)
|
| 592 |
|
|
#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
|
| 593 |
|
|
struct btrfs_ioctl_quota_ctl_args)
|
| 594 |
|
|
#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
|
| 595 |
|
|
struct btrfs_ioctl_qgroup_assign_args)
|
| 596 |
|
|
#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
|
| 597 |
|
|
struct btrfs_ioctl_qgroup_create_args)
|
| 598 |
|
|
#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
|
| 599 |
|
|
struct btrfs_ioctl_qgroup_limit_args)
|
| 600 |
|
|
#define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
|
| 601 |
|
|
struct btrfs_ioctl_quota_rescan_args)
|
| 602 |
|
|
#define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
|
| 603 |
|
|
struct btrfs_ioctl_quota_rescan_args)
|
| 604 |
|
|
#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
|
| 605 |
|
|
#define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \
|
| 606 |
|
|
char[BTRFS_LABEL_SIZE])
|
| 607 |
|
|
#define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \
|
| 608 |
|
|
char[BTRFS_LABEL_SIZE])
|
| 609 |
|
|
#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
|
| 610 |
|
|
struct btrfs_ioctl_get_dev_stats)
|
| 611 |
|
|
#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
|
| 612 |
|
|
struct btrfs_ioctl_dev_replace_args)
|
| 613 |
|
|
#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
|
| 614 |
|
|
struct btrfs_ioctl_same_args)
|
| 615 |
|
|
#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
|
| 616 |
|
|
struct btrfs_ioctl_feature_flags)
|
| 617 |
|
|
#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
|
| 618 |
|
|
struct btrfs_ioctl_feature_flags[2])
|
| 619 |
|
|
#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
|
| 620 |
|
|
struct btrfs_ioctl_feature_flags[3])
|
| 621 |
|
|
|
| 622 |
|
|
#endif /* _LINUX_BTRFS_H */
|
