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package btrfs
import (
"fmt"
"strings"
)
func bitfieldString[T ~uint8 | ~uint16 | ~uint32 | ~uint64](bitfield T, bitnames []string) string {
if bitfield == 0 {
return "0"
}
var out strings.Builder
fmt.Fprintf(&out, "(0x%0X)", uint64(bitfield))
rest := bitfield
sep := ' '
for i := 0; rest != 0; i++ {
if rest&(1<<i) != 0 {
out.WriteRune(sep)
if i < len(bitnames) {
out.WriteString(bitnames[i])
} else {
fmt.Fprintf(&out, "(1<<%d)", i)
}
sep = '|'
}
rest &^= 1 << i
}
return out.String()
}
type IncompatFlags uint64
const (
FeatureIncompatMixedBackref = IncompatFlags(1 << iota)
FeatureIncompatDefaultSubvol
FeatureIncompatMixedGroups
FeatureIncompatCompressLZO
FeatureIncompatCompressZSTD
FeatureIncompatBigMetadata // buggy
FeatureIncompatExtendedIRef
FeatureIncompatRAID56
FeatureIncompatSkinnyMetadata
FeatureIncompatNoHoles
FeatureIncompatMetadataUUID
FeatureIncompatRAID1C34
FeatureIncompatZoned
FeatureIncompatExtentTreeV2
)
var incompatFlagNames = []string{
"FeatureIncompatMixedBackref",
"FeatureIncompatDefaultSubvol",
"FeatureIncompatMixedGroups",
"FeatureIncompatCompressLZO",
"FeatureIncompatCompressZSTD",
"FeatureIncompatBigMetadata ",
"FeatureIncompatExtendedIRef",
"FeatureIncompatRAID56",
"FeatureIncompatSkinnyMetadata",
"FeatureIncompatNoHoles",
"FeatureIncompatMetadataUUID",
"FeatureIncompatRAID1C34",
"FeatureIncompatZoned",
"FeatureIncompatExtentTreeV2",
}
func (f IncompatFlags) Has(req IncompatFlags) bool { return f&req == req }
func (f IncompatFlags) String() string { return bitfieldString(f, incompatFlagNames) }
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