xfs

type AB3B struct {
	BtreeShortBlock
}

type AB3C struct {
	BtreeShortBlock
}

type AG struct {
	SuperBlock SuperBlock
	Agi        AGI
	Agf        AGF
	Agfl       AGFL

	Ab3b AB3B
	Ab3c AB3C
	Iab3 IAB3
	Fib3 FIB3
}

type AGF struct {
	Magicnum   uint32
	Versionnum uint32
	Seqno      uint32
	Length     uint32

	Roots  [3]uint32
	Levels [3]uint32

	Flfirst   uint32
	Fllast    uint32
	Flcount   uint32
	Freeblks  uint32
	Longest   uint32
	Btreeblks uint32
	UUID      [16]byte

	RmapBlocks     uint32
	RefcountBlocks uint32
	RefcountRoot   uint32
	RefcountLevel  uint32
	Spare64        [112]byte
	Lsn            uint64
	CRC            uint32
	Spare2         uint32
}

type AGFL struct {
	Magicnum uint32
	Seqno    uint32
	UUID     [16]byte
	Lsn      uint64
	CRC      uint32
	Bno      [118]uint32
}

type AGI struct {
	Magicnum   uint32
	Versionnum uint32
	Seqno      uint32
	Length     uint32
	Count      uint32
	Root       uint32
	Level      uint32
	Freecount  uint32
	Newino     uint32
	Dirino     uint32
	Unlinked   [256]byte
	UUID       [16]byte
	CRC        uint32
	Pad32      uint32
	Lsn        uint64
	FreeRoot   uint32
	FreeLevel  uint32
	Iblocks    uint32
	Fblocks    uint32
}

type BmbrBlock struct {
	Level   uint16
	Numrecs uint16
	// contains filtered or unexported fields
}

type BmbtIrec struct {
	StartOff   uint64
	StartBlock uint64
	BlockCount uint64
	State      uint8
}

type BmbtKey uint64

type BmbtPtr uint64

type BmbtRec struct {
	L0 uint64
	L1 uint64
}

type Btree struct {
	// contains filtered or unexported fields
}

type BtreeBlock struct {
	Magic      uint32
	Level      uint16 // tree level, 0 is leaf block.
	Numrecs    uint16
	BbLeftsib  int64
	BbRightsib int64

	// Long version header
	// https://github.com/torvalds/linux/blob/d2b6f8a179194de0ffc4886ffc2c4358d86047b8/fs/xfs/libxfs/xfs_format.h#L1855
	BbBlockNo uint64
	BbLsn     uint64
	UUID      [16]byte
	BbOwner   uint64
	CRC       uint32
	Padding   int32
}

type BtreeShortBlock struct {
	Magicnum uint32
	Level    uint16
	Numrecs  uint16
	Leftsib  uint32
	Rightsib uint32
	Blkno    uint64
	Lsn      uint64
	UUID     [16]byte
	Owner    uint32
	CRC      uint32
}

type Cache[K comparable, V any] interface {
	// Add cache data
	Add(key K, value V) bool

	// Get returns key's value from the cache
	Get(key K) (value V, ok bool)
}

type Device struct{}

type Dir2Block struct {
	Header  Dir3DataHdr
	Entries []Dir2DataEntry

	UnusedEntries []Dir2DataUnused
	Leafs         []Dir2LeafEntry
	Tail          Dir2BlockTail
}

type Dir2BlockTail struct {
	Count uint32
	Stale uint32
}

type Dir2DataEntry struct {
	Inumber   uint64
	Namelen   uint8
	EntryName string
	Filetype  uint8
	Tag       uint16
}

type Dir2DataFree struct {
	Offset uint16
	Length uint16
}

type Dir2DataUnused struct {
	Freetag uint16
	Length  uint16
	/* variable offset */
	Tag uint16
}

type Dir2LeafEntry struct {
	Hashval uint32
	Address uint32
}

type Dir2SfEntry struct {
	Namelen   uint8
	Offset    [2]uint8
	EntryName string
	Filetype  uint8
	Inumber   uint64
	Inumber32 uint32
}

type Dir2SfHdr struct {
	Count   uint8
	I8Count uint8
	Parent  uint32
}

type Dir3BlkHdr struct {
	Magic    uint32
	CRC      uint32
	BlockNo  uint64
	Lsn      uint64
	MetaUUID [16]byte
	Owner    uint64
}

type Dir3DataHdr struct {
	Dir3BlkHdr
	Frees   [XFS_DIR2_DATA_FD_COUNT]Dir2DataFree
	Padding uint32
}

type DirectoryExtents struct {
	// contains filtered or unexported fields
}

type DirectoryLocal struct {
	// contains filtered or unexported fields
}

type Entry interface {
	Name() string
	FileType() uint8
	InodeNumber() uint64
}

type FIB3 struct {
	BtreeShortBlock
}

type File struct {
	FileInfo
	// contains filtered or unexported fields
}

type FileInfo struct {
	// contains filtered or unexported fields
}

type FileSystem struct {
	PrimaryAG AG
	AGs       []AG
	// contains filtered or unexported fields
}

type IAB3 struct {
	Header BtreeShortBlock
	Inodes []InobtRec
}

type InobtRec struct {
	Startino  uint32
	Freecount uint32
	Free      uint64
}

type Inode struct {
	// contains filtered or unexported fields
}

type InodeCore struct {
	Magic        uint16
	Mode         uint16
	Version      uint8
	Format       uint8
	OnLink       uint16
	UID          uint32
	GID          uint32
	NLink        uint32
	ProjId       uint16
	Padding      [8]byte
	Flushiter    uint16
	Atime        uint64
	Mtime        uint64
	Ctime        uint64
	Size         uint64
	Nblocks      uint64
	Extsize      uint32
	Nextents     uint32
	Anextents    uint16
	Forkoff      uint8
	Aformat      uint8
	Dmevmask     uint32
	Dmstate      uint16
	Flags        uint16
	Gen          uint32
	NextUnlinked uint32

	CRC         uint32
	Changecount uint64
	Lsn         uint64
	Flags2      uint64
	Cowextsize  uint32
	Padding2    [12]byte
	Crtime      uint64
	Ino         uint64
	MetaUUID    [16]byte
}

type RegularExtent struct {
	// contains filtered or unexported fields
}

type SuperBlock struct {
	Magicnum   uint32
	BlockSize  uint32
	Dblocks    uint64
	Rblocks    uint64
	Rextens    uint64
	UUID       [16]byte
	Logstart   uint64
	Rootino    uint64
	Rbmino     uint64
	Rsmino     uint64
	Rextsize   uint32
	Agblocks   uint32
	Agcount    uint32
	Rbblocks   uint32
	Logblocks  uint32
	Versionnum uint16
	Sectsize   uint16
	Inodesize  uint16
	Inopblock  uint16
	Fname      [12]byte
	Blocklog   uint8
	Sectlog    uint8
	Inodelog   uint8
	Inopblog   uint8
	Agblklog   uint8
	Rextslog   uint8
	Inprogress uint8
	ImaxPct    uint8

	Icount    uint64
	Ifree     uint64
	Fdblocks  uint64
	Frextents uint64

	Uqunotino   uint64
	Gquotino    uint64
	Qflags      uint16
	Flags       uint8
	SharedVn    uint8
	Inoalignmt  uint32
	Unit        uint32
	Width       uint32
	Dirblklog   uint8
	Logsectlog  uint8
	Logsectsize uint16
	Logsunit    uint32
	Features2   uint32

	BadFeatures2        uint32
	FeaturesCompat      uint32
	FeaturesRoCompat    uint32
	FeaturesIncompat    uint32
	FeaturesLogIncompat uint32
	CRC                 uint32
	SpinoAlign          uint32
	Pquotino            uint64
	Lsn                 int64
	MetaUUID            [16]byte
}

type SymlinkString struct {
	Name string
}