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// Copyright (C) 2022 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package btrfsvol
import (
"git.lukeshu.com/btrfs-progs-ng/lib/fmtutil"
)
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 is the set of bits that mean that
// mean the logical:physical relationship is a one:many
// relationship rather than a one:one relationship.
//
// Notably, this does not include BLOCK_GROUP_RAID0.
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 := fmtutil.BitfieldString(f, blockGroupFlagNames, fmtutil.HexNone)
if f&BLOCK_GROUP_RAID_MASK == 0 {
if ret == "" {
ret = "single"
} else {
ret += "|single"
}
}
return ret
}
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