btrfs_tree.h revision 525ce914edf136d2bd02ac8c404d56c52e737f4d
1/**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19#ifndef _BTRFS_CTREE_H_ 20#define _BTRFS_CTREE_H_ 21#include <linux/btrfs.h> 22#include <linux/types.h> 23#define BTRFS_ROOT_TREE_OBJECTID 1ULL 24#define BTRFS_EXTENT_TREE_OBJECTID 2ULL 25#define BTRFS_CHUNK_TREE_OBJECTID 3ULL 26#define BTRFS_DEV_TREE_OBJECTID 4ULL 27#define BTRFS_FS_TREE_OBJECTID 5ULL 28#define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL 29#define BTRFS_CSUM_TREE_OBJECTID 7ULL 30#define BTRFS_QUOTA_TREE_OBJECTID 8ULL 31#define BTRFS_UUID_TREE_OBJECTID 9ULL 32#define BTRFS_FREE_SPACE_TREE_OBJECTID 10ULL 33#define BTRFS_DEV_STATS_OBJECTID 0ULL 34#define BTRFS_BALANCE_OBJECTID - 4ULL 35#define BTRFS_ORPHAN_OBJECTID - 5ULL 36#define BTRFS_TREE_LOG_OBJECTID - 6ULL 37#define BTRFS_TREE_LOG_FIXUP_OBJECTID - 7ULL 38#define BTRFS_TREE_RELOC_OBJECTID - 8ULL 39#define BTRFS_DATA_RELOC_TREE_OBJECTID - 9ULL 40#define BTRFS_EXTENT_CSUM_OBJECTID - 10ULL 41#define BTRFS_FREE_SPACE_OBJECTID - 11ULL 42#define BTRFS_FREE_INO_OBJECTID - 12ULL 43#define BTRFS_MULTIPLE_OBJECTIDS - 255ULL 44#define BTRFS_FIRST_FREE_OBJECTID 256ULL 45#define BTRFS_LAST_FREE_OBJECTID - 256ULL 46#define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL 47#define BTRFS_DEV_ITEMS_OBJECTID 1ULL 48#define BTRFS_BTREE_INODE_OBJECTID 1 49#define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 50#define BTRFS_DEV_REPLACE_DEVID 0ULL 51#define BTRFS_INODE_ITEM_KEY 1 52#define BTRFS_INODE_REF_KEY 12 53#define BTRFS_INODE_EXTREF_KEY 13 54#define BTRFS_XATTR_ITEM_KEY 24 55#define BTRFS_ORPHAN_ITEM_KEY 48 56#define BTRFS_DIR_LOG_ITEM_KEY 60 57#define BTRFS_DIR_LOG_INDEX_KEY 72 58#define BTRFS_DIR_ITEM_KEY 84 59#define BTRFS_DIR_INDEX_KEY 96 60#define BTRFS_EXTENT_DATA_KEY 108 61#define BTRFS_EXTENT_CSUM_KEY 128 62#define BTRFS_ROOT_ITEM_KEY 132 63#define BTRFS_ROOT_BACKREF_KEY 144 64#define BTRFS_ROOT_REF_KEY 156 65#define BTRFS_EXTENT_ITEM_KEY 168 66#define BTRFS_METADATA_ITEM_KEY 169 67#define BTRFS_TREE_BLOCK_REF_KEY 176 68#define BTRFS_EXTENT_DATA_REF_KEY 178 69#define BTRFS_EXTENT_REF_V0_KEY 180 70#define BTRFS_SHARED_BLOCK_REF_KEY 182 71#define BTRFS_SHARED_DATA_REF_KEY 184 72#define BTRFS_BLOCK_GROUP_ITEM_KEY 192 73#define BTRFS_FREE_SPACE_INFO_KEY 198 74#define BTRFS_FREE_SPACE_EXTENT_KEY 199 75#define BTRFS_FREE_SPACE_BITMAP_KEY 200 76#define BTRFS_DEV_EXTENT_KEY 204 77#define BTRFS_DEV_ITEM_KEY 216 78#define BTRFS_CHUNK_ITEM_KEY 228 79#define BTRFS_QGROUP_STATUS_KEY 240 80#define BTRFS_QGROUP_INFO_KEY 242 81#define BTRFS_QGROUP_LIMIT_KEY 244 82#define BTRFS_QGROUP_RELATION_KEY 246 83#define BTRFS_BALANCE_ITEM_KEY 248 84#define BTRFS_TEMPORARY_ITEM_KEY 248 85#define BTRFS_DEV_STATS_KEY 249 86#define BTRFS_PERSISTENT_ITEM_KEY 249 87#define BTRFS_DEV_REPLACE_KEY 250 88#if BTRFS_UUID_SIZE != 16 89#error "UUID items require BTRFS_UUID_SIZE == 16!" 90#endif 91#define BTRFS_UUID_KEY_SUBVOL 251 92#define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 93#define BTRFS_STRING_ITEM_KEY 253 94#define BTRFS_CSUM_SIZE 32 95#define BTRFS_CSUM_TYPE_CRC32 0 96#define BTRFS_FT_UNKNOWN 0 97#define BTRFS_FT_REG_FILE 1 98#define BTRFS_FT_DIR 2 99#define BTRFS_FT_CHRDEV 3 100#define BTRFS_FT_BLKDEV 4 101#define BTRFS_FT_FIFO 5 102#define BTRFS_FT_SOCK 6 103#define BTRFS_FT_SYMLINK 7 104#define BTRFS_FT_XATTR 8 105#define BTRFS_FT_MAX 9 106struct btrfs_disk_key { 107 __le64 objectid; 108 __u8 type; 109 __le64 offset; 110} __attribute__((__packed__)); 111struct btrfs_key { 112 __u64 objectid; 113 __u8 type; 114 __u64 offset; 115} __attribute__((__packed__)); 116struct btrfs_dev_item { 117 __le64 devid; 118 __le64 total_bytes; 119 __le64 bytes_used; 120 __le32 io_align; 121 __le32 io_width; 122 __le32 sector_size; 123 __le64 type; 124 __le64 generation; 125 __le64 start_offset; 126 __le32 dev_group; 127 __u8 seek_speed; 128 __u8 bandwidth; 129 __u8 uuid[BTRFS_UUID_SIZE]; 130 __u8 fsid[BTRFS_UUID_SIZE]; 131} __attribute__((__packed__)); 132struct btrfs_stripe { 133 __le64 devid; 134 __le64 offset; 135 __u8 dev_uuid[BTRFS_UUID_SIZE]; 136} __attribute__((__packed__)); 137struct btrfs_chunk { 138 __le64 length; 139 __le64 owner; 140 __le64 stripe_len; 141 __le64 type; 142 __le32 io_align; 143 __le32 io_width; 144 __le32 sector_size; 145 __le16 num_stripes; 146 __le16 sub_stripes; 147 struct btrfs_stripe stripe; 148} __attribute__((__packed__)); 149#define BTRFS_FREE_SPACE_EXTENT 1 150#define BTRFS_FREE_SPACE_BITMAP 2 151struct btrfs_free_space_entry { 152 __le64 offset; 153 __le64 bytes; 154 __u8 type; 155} __attribute__((__packed__)); 156struct btrfs_free_space_header { 157 struct btrfs_disk_key location; 158 __le64 generation; 159 __le64 num_entries; 160 __le64 num_bitmaps; 161} __attribute__((__packed__)); 162#define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) 163#define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) 164#define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) 165#define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) 166#define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) 167struct btrfs_extent_item { 168 __le64 refs; 169 __le64 generation; 170 __le64 flags; 171} __attribute__((__packed__)); 172struct btrfs_extent_item_v0 { 173 __le32 refs; 174} __attribute__((__packed__)); 175#define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) 176#define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) 177#define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) 178#define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) 179struct btrfs_tree_block_info { 180 struct btrfs_disk_key key; 181 __u8 level; 182} __attribute__((__packed__)); 183struct btrfs_extent_data_ref { 184 __le64 root; 185 __le64 objectid; 186 __le64 offset; 187 __le32 count; 188} __attribute__((__packed__)); 189struct btrfs_shared_data_ref { 190 __le32 count; 191} __attribute__((__packed__)); 192struct btrfs_extent_inline_ref { 193 __u8 type; 194 __le64 offset; 195} __attribute__((__packed__)); 196struct btrfs_extent_ref_v0 { 197 __le64 root; 198 __le64 generation; 199 __le64 objectid; 200 __le32 count; 201} __attribute__((__packed__)); 202struct btrfs_dev_extent { 203 __le64 chunk_tree; 204 __le64 chunk_objectid; 205 __le64 chunk_offset; 206 __le64 length; 207 __u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; 208} __attribute__((__packed__)); 209struct btrfs_inode_ref { 210 __le64 index; 211 __le16 name_len; 212} __attribute__((__packed__)); 213struct btrfs_inode_extref { 214 __le64 parent_objectid; 215 __le64 index; 216 __le16 name_len; 217 __u8 name[0]; 218} __attribute__((__packed__)); 219struct btrfs_timespec { 220 __le64 sec; 221 __le32 nsec; 222} __attribute__((__packed__)); 223struct btrfs_inode_item { 224 __le64 generation; 225 __le64 transid; 226 __le64 size; 227 __le64 nbytes; 228 __le64 block_group; 229 __le32 nlink; 230 __le32 uid; 231 __le32 gid; 232 __le32 mode; 233 __le64 rdev; 234 __le64 flags; 235 __le64 sequence; 236 __le64 reserved[4]; 237 struct btrfs_timespec atime; 238 struct btrfs_timespec ctime; 239 struct btrfs_timespec mtime; 240 struct btrfs_timespec otime; 241} __attribute__((__packed__)); 242struct btrfs_dir_log_item { 243 __le64 end; 244} __attribute__((__packed__)); 245struct btrfs_dir_item { 246 struct btrfs_disk_key location; 247 __le64 transid; 248 __le16 data_len; 249 __le16 name_len; 250 __u8 type; 251} __attribute__((__packed__)); 252#define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) 253#define BTRFS_ROOT_SUBVOL_DEAD (1ULL << 48) 254struct btrfs_root_item { 255 struct btrfs_inode_item inode; 256 __le64 generation; 257 __le64 root_dirid; 258 __le64 bytenr; 259 __le64 byte_limit; 260 __le64 bytes_used; 261 __le64 last_snapshot; 262 __le64 flags; 263 __le32 refs; 264 struct btrfs_disk_key drop_progress; 265 __u8 drop_level; 266 __u8 level; 267 __le64 generation_v2; 268 __u8 uuid[BTRFS_UUID_SIZE]; 269 __u8 parent_uuid[BTRFS_UUID_SIZE]; 270 __u8 received_uuid[BTRFS_UUID_SIZE]; 271 __le64 ctransid; 272 __le64 otransid; 273 __le64 stransid; 274 __le64 rtransid; 275 struct btrfs_timespec ctime; 276 struct btrfs_timespec otime; 277 struct btrfs_timespec stime; 278 struct btrfs_timespec rtime; 279 __le64 reserved[8]; 280} __attribute__((__packed__)); 281struct btrfs_root_ref { 282 __le64 dirid; 283 __le64 sequence; 284 __le16 name_len; 285} __attribute__((__packed__)); 286struct btrfs_disk_balance_args { 287 __le64 profiles; 288 union { 289 __le64 usage; 290 struct { 291 __le32 usage_min; 292 __le32 usage_max; 293 }; 294 }; 295 __le64 devid; 296 __le64 pstart; 297 __le64 pend; 298 __le64 vstart; 299 __le64 vend; 300 __le64 target; 301 __le64 flags; 302 union { 303 __le64 limit; 304 struct { 305 __le32 limit_min; 306 __le32 limit_max; 307 }; 308 }; 309 __le32 stripes_min; 310 __le32 stripes_max; 311 __le64 unused[6]; 312} __attribute__((__packed__)); 313struct btrfs_balance_item { 314 __le64 flags; 315 struct btrfs_disk_balance_args data; 316 struct btrfs_disk_balance_args meta; 317 struct btrfs_disk_balance_args sys; 318 __le64 unused[4]; 319} __attribute__((__packed__)); 320#define BTRFS_FILE_EXTENT_INLINE 0 321#define BTRFS_FILE_EXTENT_REG 1 322#define BTRFS_FILE_EXTENT_PREALLOC 2 323struct btrfs_file_extent_item { 324 __le64 generation; 325 __le64 ram_bytes; 326 __u8 compression; 327 __u8 encryption; 328 __le16 other_encoding; 329 __u8 type; 330 __le64 disk_bytenr; 331 __le64 disk_num_bytes; 332 __le64 offset; 333 __le64 num_bytes; 334} __attribute__((__packed__)); 335struct btrfs_csum_item { 336 __u8 csum; 337} __attribute__((__packed__)); 338struct btrfs_dev_stats_item { 339 __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; 340} __attribute__((__packed__)); 341#define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 342#define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 343#define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 344#define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 345#define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 346#define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 347#define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 348struct btrfs_dev_replace_item { 349 __le64 src_devid; 350 __le64 cursor_left; 351 __le64 cursor_right; 352 __le64 cont_reading_from_srcdev_mode; 353 __le64 replace_state; 354 __le64 time_started; 355 __le64 time_stopped; 356 __le64 num_write_errors; 357 __le64 num_uncorrectable_read_errors; 358} __attribute__((__packed__)); 359#define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) 360#define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) 361#define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) 362#define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) 363#define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) 364#define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) 365#define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) 366#define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) 367#define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) 368#define BTRFS_BLOCK_GROUP_RESERVED (BTRFS_AVAIL_ALLOC_BIT_SINGLE | BTRFS_SPACE_INFO_GLOBAL_RSV) 369enum btrfs_raid_types { 370 BTRFS_RAID_RAID10, 371 BTRFS_RAID_RAID1, 372 BTRFS_RAID_DUP, 373 BTRFS_RAID_RAID0, 374 BTRFS_RAID_SINGLE, 375 BTRFS_RAID_RAID5, 376 BTRFS_RAID_RAID6, 377 BTRFS_NR_RAID_TYPES 378}; 379#define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_SYSTEM | BTRFS_BLOCK_GROUP_METADATA) 380#define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6 | BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID10) 381#define BTRFS_BLOCK_GROUP_RAID56_MASK (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6) 382#define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) 383#define BTRFS_SPACE_INFO_GLOBAL_RSV (1ULL << 49) 384#define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | BTRFS_AVAIL_ALLOC_BIT_SINGLE) 385struct btrfs_block_group_item { 386 __le64 used; 387 __le64 chunk_objectid; 388 __le64 flags; 389} __attribute__((__packed__)); 390struct btrfs_free_space_info { 391 __le32 extent_count; 392 __le32 flags; 393} __attribute__((__packed__)); 394#define BTRFS_FREE_SPACE_USING_BITMAPS (1ULL << 0) 395#define BTRFS_QGROUP_LEVEL_SHIFT 48 396#define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) 397#define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) 398#define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) 399#define BTRFS_QGROUP_STATUS_VERSION 1 400struct btrfs_qgroup_status_item { 401 __le64 version; 402 __le64 generation; 403 __le64 flags; 404 __le64 rescan; 405} __attribute__((__packed__)); 406struct btrfs_qgroup_info_item { 407 __le64 generation; 408 __le64 rfer; 409 __le64 rfer_cmpr; 410 __le64 excl; 411 __le64 excl_cmpr; 412} __attribute__((__packed__)); 413struct btrfs_qgroup_limit_item { 414 __le64 flags; 415 __le64 max_rfer; 416 __le64 max_excl; 417 __le64 rsv_rfer; 418 __le64 rsv_excl; 419} __attribute__((__packed__)); 420#endif 421