func send(name string, outputFD uintptr, fromSnap string, largeBlockOK, embedOK bool) error {
innvl := map[string]interface{}{
"fd": int32(outputFD),
}
// The following properties are optional, but must only be present in innvl
// if being used.
if fromSnap != "" {
innvl["fromsnap"] = fromSnap
}
if largeBlockOK {
innvl["largeblockok"] = true
}
if embedOK {
innvl["embedok"] = true
}
m := map[string]interface{}{
"cmd": "zfs_send",
"version": uint64(0),
"innvl": innvl,
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return err
}
return ioctl(zfs, name, encoded.Bytes(), nil)
}
func holds(name string) ([]string, error) {
m := map[string]interface{}{
"cmd": "zfs_get_holds",
"version": uint64(0),
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return nil, err
}
out := make([]byte, 1024)
copy(out, emptyList)
err = ioctl(zfs, name, encoded.Bytes(), out)
if err != nil {
return nil, err
}
m = map[string]interface{}{}
if err = nv.NewNativeDecoder(bytes.NewReader(out)).Decode(&m); err != nil {
return nil, err
}
names := make([]string, 0, len(m))
for name := range m {
names = append(names, name)
}
return names, nil
}
func rename(name, newName string, recursive bool) (string, error) {
m := map[string]interface{}{
"cmd": "zfs_rename",
"version": uint64(0),
"innvl": map[string]interface{}{
"newname": newName,
"recursive": recursive,
},
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return "", err
}
out := make([]byte, 1024)
err = ioctl(zfs, name, encoded.Bytes(), out)
var failedName string
if err != nil && recursive {
_ = nv.NewNativeDecoder(bytes.NewReader(out)).Decode(&failedName)
}
return failedName, err
}
func exists(name string) error {
m := map[string]interface{}{
"cmd": "zfs_exists",
"version": uint64(0),
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return err
}
return ioctl(zfs, name, encoded.Bytes(), nil)
}
func destroy(name string, deferFlag bool) error {
m := map[string]interface{}{
"cmd": "zfs_destroy",
"version": uint64(0),
"defer": deferFlag,
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return err
}
return ioctl(zfs, name, encoded.Bytes(), nil)
}
func clone(name, origin string, props map[string]interface{}) error {
m := map[string]interface{}{
"cmd": "zfs_clone",
"version": uint64(0),
"innvl": map[string]interface{}{
"origin": origin,
"props": props,
},
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return err
}
return ioctl(zfs, name, encoded.Bytes(), nil)
}
func create(name string, createType dmuType, props map[string]interface{}) error {
m := map[string]interface{}{
"cmd": "zfs_create",
"version": uint64(0),
"innvl": map[string]interface{}{
"type": createType,
"props": props,
},
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return err
}
return ioctl(zfs, name, encoded.Bytes(), nil)
}
func snapshot(pool string, snapNames []string, props map[string]string) (map[string]syscall.Errno, error) {
// snaps needs to be a map with the snap name as the key and an arbitrary value
snaps := make(map[string]string)
for _, snapName := range snapNames {
snaps[snapName] = ""
}
m := map[string]interface{}{
"cmd": "zfs_snapshot",
"version": uint64(0),
"innvl": map[string]interface{}{
"snaps": snaps,
"props": props,
},
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return nil, err
}
out := make([]byte, 1024)
err = ioctl(zfs, pool, encoded.Bytes(), out)
var errlist map[string]syscall.Errno
if errno, ok := err.(syscall.Errno); ok && errno == syscall.EEXIST {
// Try to get errlist info, but ignore any errors in the attempt
errs := map[string]int32{}
if nv.NewNativeDecoder(bytes.NewReader(out)).Decode(&errs) == nil {
errlist = make(map[string]syscall.Errno, len(errs))
for snap, errno := range errs {
errlist[snap] = syscall.Errno(errno)
}
}
}
return errlist, err
}
func rollback(name string) (string, error) {
m := map[string]interface{}{
"cmd": "zfs_rollback",
"version": uint64(0),
}
encoded := &bytes.Buffer{}
err := nv.NewNativeEncoder(encoded).Encode(m)
if err != nil {
return "", err
}
out := make([]byte, 1024)
err = ioctl(zfs, name, encoded.Bytes(), out)
var snapName string
if err == nil {
var results map[string]string
if err = nv.NewNativeDecoder(bytes.NewReader(out)).Decode(&results); err == nil {
snapName = results["target"]
}
}
return snapName, err
}
func list(name string, types map[string]bool, recurse bool, depth uint64) ([]*dataset, error) {
var reader io.Reader
reader, writer, err := os.Pipe()
if err != nil {
return nil, err
}
defer reader.(*os.File).Close()
defer writer.Close()
opts := map[string]interface{}{
"fd": int32(writer.Fd()),
}
if types != nil {
opts["type"] = types
}
if recurse != false {
if depth != 0 {
opts["recurse"] = depth
} else {
opts["recurse"] = true
}
}
args := map[string]interface{}{
"cmd": "zfs_list",
"innvl": map[string]interface{}{},
"opts": opts,
"version": uint64(0),
}
encoded := &bytes.Buffer{}
err = nv.NewNativeEncoder(encoded).Encode(args)
if err != nil {
return nil, err
}
err = ioctl(zfs, name, encoded.Bytes(), nil)
if err != nil {
return nil, err
}
var buf []byte
reader = bufio.NewReader(reader)
ret := []*dataset{}
for {
var size int64
size, err = getSize(reader)
if err != nil {
break
}
if size == 0 {
break
}
if len(buf) < int(size) {
l := (size + 1023) & ^1023
buf = make([]byte, l)
}
buf = buf[:size]
_, err = io.ReadFull(reader, buf)
if err != nil {
break
}
m := &dataset{}
err = nv.NewXDRDecoder(bytes.NewReader(buf)).Decode(&m)
if err != nil {
break
}
if m.Properties.Clones.Value == nil {
m.Properties.Clones.Value = make(map[string]nv.Boolean)
}
ret = append(ret, m)
}
return ret, err
}