blob: 894ccff1a60994437b305b4fbe87d7f3079a1092 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
package btrfsitem
import (
"lukeshu.com/btrfs-tools/pkg/binstruct"
"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
)
// The Key for this item is a UUID, and the item is a list of
// subvolume IDs (ObjectIDs) that that UUID maps to.
type UUIDMap struct { // UUID_SUBVOL=251 UUID_RECEIVED_SUBVOL=252
SubvolIDs []internal.ObjID
}
func (o *UUIDMap) UnmarshalBinary(dat []byte) (int, error) {
o.SubvolIDs = nil
var n int
for len(dat) > n {
var subvolID internal.ObjID
_n, err := binstruct.Unmarshal(dat[n:], &subvolID)
n += _n
if err != nil {
return n, err
}
o.SubvolIDs = append(o.SubvolIDs, subvolID)
}
return n, nil
}
func (o UUIDMap) MarshalBinary() ([]byte, error) {
var ret []byte
for _, subvolID := range o.SubvolIDs {
bs, err := binstruct.Marshal(subvolID)
ret = append(ret, bs...)
if err != nil {
return ret, err
}
}
return ret, nil
}
|
