81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
/*
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Copyright 2016 The GoStor Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package backingstore
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import (
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"github.com/gostor/gotgt/pkg/api"
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"github.com/gostor/gotgt/pkg/scsi"
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)
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func init() {
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scsi.RegisterBackingStore("null", newNull)
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}
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type NullBackingStore struct {
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scsi.BaseBackingStore
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}
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func newNull() (api.BackingStore, error) {
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return &NullBackingStore{
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BaseBackingStore: scsi.BaseBackingStore{
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Name: "null",
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DataSize: 0,
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OflagsSupported: 0,
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},
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}, nil
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}
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func (bs *NullBackingStore) Open(dev *api.SCSILu, path string) error {
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return nil
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}
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func (bs *NullBackingStore) Close(dev *api.SCSILu) error {
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return nil
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}
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func (bs *NullBackingStore) Init(dev *api.SCSILu, Opts string) error {
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return nil
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}
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func (bs *NullBackingStore) Exit(dev *api.SCSILu) error {
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return nil
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}
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func (bs *NullBackingStore) Size(dev *api.SCSILu) uint64 {
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return 0
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}
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func (bs *NullBackingStore) Read(offset, tl int64) ([]byte, error) {
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return nil, nil
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}
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func (bs *NullBackingStore) Write(wbuf []byte, offset int64) error {
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return nil
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}
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func (bs *NullBackingStore) DataSync(offset, tl int64) error {
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return nil
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}
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func (bs *NullBackingStore) DataAdvise(offset, length int64, advise uint32) error {
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return nil
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}
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func (bs *NullBackingStore) Unmap([]api.UnmapBlockDescriptor) error {
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return nil
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}
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