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package btrfsitem
import (
"lukeshu.com/btrfs-tools/pkg/binstruct"
"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
"lukeshu.com/btrfs-tools/pkg/util"
)
type BlockGroup struct { // BLOCK_GROUP_ITEM=192
Used int64 `bin:"off=0, siz=8"`
ChunkObjectID internal.ObjID `bin:"off=8, siz=8"`
Flags BlockGroupFlags `bin:"off=16, siz=8"`
binstruct.End `bin:"off=24"`
}
type BlockGroupFlags uint64
const (
BLOCK_GROUP_DATA = BlockGroupFlags(1 << iota)
BLOCK_GROUP_SYSTEM
BLOCK_GROUP_METADATA
BLOCK_GROUP_RAID0
BLOCK_GROUP_RAID1
BLOCK_GROUP_DUP
BLOCK_GROUP_RAID10
BLOCK_GROUP_RAID5
BLOCK_GROUP_RAID6
BLOCK_GROUP_RAID1C3
BLOCK_GROUP_RAID1C4
BLOCK_GROUP_RAID_MASK = (BLOCK_GROUP_RAID1 | BLOCK_GROUP_DUP | BLOCK_GROUP_RAID10 | BLOCK_GROUP_RAID5 | BLOCK_GROUP_RAID6 | BLOCK_GROUP_RAID1C3 | BLOCK_GROUP_RAID1C4)
)
var blockGroupFlagNames = []string{
"DATA",
"SYSTEM",
"METADATA",
"RAID0",
"RAID1",
"DUP",
"RAID10",
"RAID5",
"RAID6",
"RAID1C3",
"RAID1C4",
}
func (f BlockGroupFlags) Has(req BlockGroupFlags) bool { return f&req == req }
func (f BlockGroupFlags) String() string {
ret := util.BitfieldString(f, blockGroupFlagNames, util.HexNone)
if f&BLOCK_GROUP_RAID_MASK == 0 {
if ret == "" {
ret = "single"
} else {
ret += "|single"
}
}
return ret
}
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