/
cmd_handler.go
55 lines (50 loc) · 1.58 KB
/
cmd_handler.go
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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
// Copyright © 2019 NVIDIA Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package blockdev
import (
"io"
"github.com/tnarg/go-tcmu"
"github.com/tnarg/go-tcmu/scsi"
"go.uber.org/zap"
)
type readerAtCmdHandler struct {
R io.ReaderAt
Inq *tcmu.InquiryInfo
}
func (h readerAtCmdHandler) HandleCommand(cmd *tcmu.SCSICmd) (tcmu.SCSIResponse, error) {
switch cmd.Command() {
case scsi.Inquiry:
if h.Inq == nil {
h.Inq = &tcmu.InquiryInfo{
VendorID: "NVIDIA",
ProductID: "VDISC",
ProductRev: "0001",
}
}
return tcmu.EmulateInquiry(cmd, h.Inq)
case scsi.TestUnitReady:
return tcmu.EmulateTestUnitReady(cmd)
case scsi.ServiceActionIn16:
return tcmu.EmulateServiceActionIn(cmd)
case scsi.ModeSense, scsi.ModeSense10:
return tcmu.EmulateModeSense(cmd, false)
case scsi.ModeSelect, scsi.ModeSelect10:
return tcmu.EmulateModeSelect(cmd, false)
case scsi.Read6, scsi.Read10, scsi.Read12, scsi.Read16:
return tcmu.EmulateRead(cmd, h.R)
default:
zap.L().Sugar().Warnf("Ignore unknown SCSI command 0x%x", cmd.Command())
}
return cmd.NotHandled(), nil
}