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ioctl & subvolume: Handle BTRFS_ROOT_SUBVOL_RDONLY as well for searches

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Alex D. 2024-09-29 16:48:48 +00:00 committed by Denys Smirnov
parent 0167142bde
commit 12ae127e0b
2 changed files with 13 additions and 5 deletions
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15
ioctl_h.go
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@ -96,17 +96,21 @@ const subvolNameMax = 4039
type SubvolFlags uint64
// Match flags like GetFlags translates in fs/btrfs/ioctl.c `btrfs_ioctl_subvol_getflags`
const subvolReadOnlyMask = (SubvolReadOnly | SubvolRootReadOnly)
func (f SubvolFlags) ReadOnly() bool {
return f&SubvolReadOnly != 0
return f&subvolReadOnlyMask != 0
}
func (f SubvolFlags) String() string {
if f == 0 {
return "<nil>"
}
var out []string
if f&SubvolReadOnly != 0 {
if f.ReadOnly() {
out = append(out, "RO")
f = f & (^SubvolReadOnly)
f = f & (^subvolReadOnlyMask)
}
if f != 0 {
out = append(out, "0x"+strconv.FormatInt(int64(f), 16))
@ -123,8 +127,9 @@ func (f SubvolFlags) String() string {
// - BTRFS_IOC_SUBVOL_GETFLAGS
// - BTRFS_IOC_SUBVOL_SETFLAGS
const (
subvolCreateAsync = SubvolFlags(1 << 0)
SubvolReadOnly = SubvolFlags(1 << 1)
subvolCreateAsync = SubvolFlags(1 << 0) // deprecated in 5.7
SubvolRootReadOnly = SubvolFlags(1 << 0) // BTRFS_ROOT_SUBVOL_RDONLY, only present in search result copies
SubvolReadOnly = SubvolFlags(1 << 1) // BTRFS_SUBVOL_RDONLY
subvolQGroupInherit = SubvolFlags(1 << 2)
)

3
subvolume.go
View File

@ -253,6 +253,8 @@ func listSubVolumes(f *os.File, filter func(SubvolInfo) bool) (map[objectID]Subv
type SubvolInfo struct {
RootID uint64
Flags SubvolFlags
UUID UUID
ParentUUID UUID
ReceivedUUID UUID
@ -274,6 +276,7 @@ func (s *SubvolInfo) fillFromItem(it *rootItem) {
s.UUID = it.UUID
s.ReceivedUUID = it.ReceivedUUID
s.ParentUUID = it.ParentUUID
s.Flags = SubvolFlags(it.Flags)
s.CTime = it.CTime
s.OTime = it.OTime