77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
/*
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Copyright 2015 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 scsi
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import "fmt"
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type BaseBackingStore struct {
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Name string
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DataSize int
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OflagsSupported int
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}
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type BackingStore interface {
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Open(dev *SCSILu, path string, fd *int, size *uint64) error
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Close(dev *SCSILu) error
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Init(dev *SCSILu, Opts string) error
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Exit(dev *SCSILu) error
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CommandSubmit(cmd *SCSICommand) error
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}
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type BackingStoreFunc func() (BackingStore, error)
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var registeredPlugins = map[name](BackingStoreFunc){}
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func RegisterBackingStore(name string, f BackingStoreFunc) {
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registeredPlugins[name] = f
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}
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func NewBackingStore(name string) (BackingStore, error) {
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if name == "" {
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return nil, nil
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}
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f, ok := registeredPlugins[name]
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if !ok {
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return nil, fmt.Errorf("BackingStore %s is not found.", name)
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}
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return f()
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}
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type fakeBackingStore struct {
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BaseBackingStore
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}
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func (fake *fakeBackingStore) Open(dev *SCSILu, path string, fd *int, size *uint64) error {
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return nil
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}
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func (fake *fakeBackingStore) Close(dev *SCSILu) error {
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return nil
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}
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func (fake *fakeBackingStore) Init(dev *SCSILu, Opts string) error {
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return nil
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}
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func (fake *fakeBackingStore) Exit(dev *SCSILu) error {
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return nil
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}
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func (fake *fakeBackingStore) CommandSubmit(cmd *SCSICommand) error {
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return nil
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}
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