mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-05 12:40:20 +00:00
80 lines
2.4 KiB
Go
80 lines
2.4 KiB
Go
|
//
|
||
|
// Ceph Mimic introduced rbd_snap_get_namespace_type().
|
||
|
|
||
|
package rbd
|
||
|
|
||
|
// #cgo LDFLAGS: -lrbd
|
||
|
// #include <rbd/librbd.h>
|
||
|
import "C"
|
||
|
|
||
|
import (
|
||
|
"unsafe"
|
||
|
|
||
|
"github.com/ceph/go-ceph/internal/retry"
|
||
|
)
|
||
|
|
||
|
// SnapNamespaceType indicates the namespace to which the snapshot belongs to.
|
||
|
type SnapNamespaceType C.rbd_snap_namespace_type_t
|
||
|
|
||
|
const (
|
||
|
// SnapNamespaceTypeUser indicates that the snapshot belongs to user namespace.
|
||
|
SnapNamespaceTypeUser = SnapNamespaceType(C.RBD_SNAP_NAMESPACE_TYPE_USER)
|
||
|
|
||
|
// SnapNamespaceTypeGroup indicates that the snapshot belongs to group namespace.
|
||
|
// Such snapshots will have associated group information.
|
||
|
SnapNamespaceTypeGroup = SnapNamespaceType(C.RBD_SNAP_NAMESPACE_TYPE_GROUP)
|
||
|
|
||
|
// SnapNamespaceTypeTrash indicates that the snapshot belongs to trash namespace.
|
||
|
SnapNamespaceTypeTrash = SnapNamespaceType(C.RBD_SNAP_NAMESPACE_TYPE_TRASH)
|
||
|
)
|
||
|
|
||
|
// GetSnapNamespaceType gets the type of namespace to which the snapshot belongs to,
|
||
|
// returns error on failure.
|
||
|
//
|
||
|
// Implements:
|
||
|
// int rbd_snap_get_namespace_type(rbd_image_t image, uint64_t snap_id, rbd_snap_namespace_type_t *namespace_type)
|
||
|
func (image *Image) GetSnapNamespaceType(snapID uint64) (SnapNamespaceType, error) {
|
||
|
var nsType SnapNamespaceType
|
||
|
|
||
|
if err := image.validate(imageIsOpen); err != nil {
|
||
|
return nsType, err
|
||
|
}
|
||
|
|
||
|
ret := C.rbd_snap_get_namespace_type(image.image,
|
||
|
C.uint64_t(snapID),
|
||
|
(*C.rbd_snap_namespace_type_t)(&nsType))
|
||
|
return nsType, getError(ret)
|
||
|
}
|
||
|
|
||
|
// GetSnapTrashNamespace returns the original name of the snapshot which was
|
||
|
// moved to the Trash. The caller should make sure that the snapshot ID passed in this
|
||
|
// function belongs to a snapshot already in the Trash.
|
||
|
//
|
||
|
// Implements:
|
||
|
// int rbd_snap_get_trash_namespace(rbd_image_t image, uint64_t snap_id, char *original_name, size_t max_length)
|
||
|
func (image *Image) GetSnapTrashNamespace(snapID uint64) (string, error) {
|
||
|
if err := image.validate(imageIsOpen); err != nil {
|
||
|
return "", err
|
||
|
}
|
||
|
|
||
|
var (
|
||
|
buf []byte
|
||
|
err error
|
||
|
)
|
||
|
retry.WithSizes(4096, 262144, func(length int) retry.Hint {
|
||
|
cLength := C.size_t(length)
|
||
|
buf = make([]byte, cLength)
|
||
|
ret := C.rbd_snap_get_trash_namespace(image.image,
|
||
|
C.uint64_t(snapID),
|
||
|
(*C.char)(unsafe.Pointer(&buf[0])),
|
||
|
cLength)
|
||
|
err = getError(ret)
|
||
|
return retry.Size(int(cLength)).If(err == errRange)
|
||
|
})
|
||
|
|
||
|
if err != nil {
|
||
|
return "", err
|
||
|
}
|
||
|
return C.GoString((*C.char)(unsafe.Pointer(&buf[0]))), nil
|
||
|
}
|