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fix some issues for SCSI command

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This commit is contained in:
Lei Xue
2017-06-24 12:09:05 +08:00
parent 59bebf79be
commit a523a583dc
5 changed files with 77 additions and 35 deletions
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14
pkg/scsi/backingstore.go
View File

@@ -1,5 +1,5 @@
/*
Copyright 2016 The GoStor Authors All rights reserved.
Copyright 2017 The GoStor Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -51,14 +51,12 @@ func NewBackingStore(name string) (api.BackingStore, error) {
return f()
}
func bsPerformCommand(bs api.BackingStore, cmd *api.SCSICommand) (err error) {
func bsPerformCommand(bs api.BackingStore, cmd *api.SCSICommand) (err error, key byte, asc SCSISubError) {
var (
scb = cmd.SCB.Bytes()
offset = cmd.Offset
opcode = api.SCSICommandType(scb[0])
lu = cmd.Device
key = ILLEGAL_REQUEST
asc = ASC_INVALID_FIELD_IN_CDB
wbuf []byte = []byte{}
tl int64 = int64(cmd.TL)
rbuf = make([]byte, tl)
@@ -66,6 +64,8 @@ func bsPerformCommand(bs api.BackingStore, cmd *api.SCSICommand) (err error) {
doVerify bool = false
doWrite bool = false
)
key = HARDWARE_ERROR
asc = ASC_INTERNAL_TGT_FAILURE
switch opcode {
case api.ORWRITE_16:
tmpbuf := []byte{}
@@ -181,13 +181,13 @@ verify:
bs.DataAdvise(int64(offset), int64(length), util.POSIX_FADV_WILLNEED)
}
}
return nil
return nil, key, asc
sense:
if err != nil {
log.Error(err)
return err
return err, key, asc
}
err = fmt.Errorf("sense data encounter, key: %v, asc: %v", key, asc)
return err
return err, key, asc
}

2
pkg/scsi/backingstore/common.go
View File

@@ -1,5 +1,5 @@
/*
Copyright 2016 The GoStor Authors All rights reserved.
Copyright 2017 The GoStor Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.

86
pkg/scsi/sbc.go
View File

@@ -1,5 +1,5 @@
/*
Copyright 2016 The GoStor Authors All rights reserved.
Copyright 2017 The GoStor Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -339,14 +339,12 @@ func SBCReadWrite(host int, cmd *api.SCSICommand) api.SAMStat {
case api.READ_10, api.READ_12, api.READ_16, api.WRITE_10, api.WRITE_12, api.WRITE_16, api.ORWRITE_16,
api.WRITE_VERIFY, api.WRITE_VERIFY_12, api.WRITE_VERIFY_16, api.COMPARE_AND_WRITE:
// We only support protection information type 0
/*
if scb[1]&0xe0 != 0 {
key = ILLEGAL_REQUEST
asc = ASC_INVALID_FIELD_IN_CDB
log.Warnf("sense")
goto sense
}
*/
if scb[1]&0xe0 != 0 {
key = ILLEGAL_REQUEST
asc = ASC_INVALID_FIELD_IN_CDB
log.Warnf("sense data(ILLEGAL_REQUEST,ASC_INVALID_FIELD_IN_CDB) encounter")
goto sense
}
if cmd.OutSDBBuffer.Buffer == nil {
cmd.OutSDBBuffer.Buffer = &bytes.Buffer{}
}
@@ -384,7 +382,7 @@ func SBCReadWrite(host int, cmd *api.SCSICommand) api.SAMStat {
api.PRE_FETCH_10, api.PRE_FETCH_16, api.COMPARE_AND_WRITE:
key = DATA_PROTECT
asc = ASC_WRITE_PROTECT
log.Warnf("sense")
log.Warnf("sense data(data protect) and asc(ASC_WRITE_PROTECT) encounter")
goto sense
}
}
@@ -397,14 +395,14 @@ func SBCReadWrite(host int, cmd *api.SCSICommand) api.SAMStat {
if lba+uint64(tl) < lba || lba+uint64(tl) > dev.Size>>dev.BlockShift {
key = ILLEGAL_REQUEST
asc = ASC_LBA_OUT_OF_RANGE
log.Warnf("sense: lba: %d, tl: %d, size: %d", lba, tl, dev.Size>>dev.BlockShift)
log.Warnf("sense data(ILLEGAL_REQUEST,ASC_LBA_OUT_OF_RANGE) encounter: lba: %d, tl: %d, size: %d", lba, tl, dev.Size>>dev.BlockShift)
goto sense
}
} else {
if lba >= dev.Size>>dev.BlockShift {
key = ILLEGAL_REQUEST
asc = ASC_LBA_OUT_OF_RANGE
log.Warnf("sense")
log.Warnf("sense data(ILLEGAL_REQUEST,ASC_LBA_OUT_OF_RANGE) encounter: lba: %d, size: %d", lba, dev.Size>>dev.BlockShift)
goto sense
}
}
@@ -435,11 +433,9 @@ func SBCReadWrite(host int, cmd *api.SCSICommand) api.SAMStat {
*/
}
err = bsPerformCommand(dev.Storage, cmd)
err, key, asc = bsPerformCommand(dev.Storage, cmd)
if err != nil {
log.Error(err)
key = HARDWARE_ERROR
asc = ASC_INTERNAL_TGT_FAILURE
goto sense
} else {
return api.SAMStatGood
}
@@ -577,14 +573,11 @@ func SBCVerify(host int, cmd *api.SCSICommand) api.SAMStat {
cmd.Offset = lba << dev.BlockShift
cmd.TL = tl << dev.BlockShift
err = bsPerformCommand(dev.Storage, cmd)
err, key, asc = bsPerformCommand(dev.Storage, cmd)
if err != nil {
log.Error(err)
key = HARDWARE_ERROR
asc = ASC_INTERNAL_TGT_FAILURE
} else {
return api.SAMStatGood
goto sense
}
return api.SAMStatGood
sense:
cmd.InSDBBuffer.Resid = 0
BuildSenseData(cmd, key, asc)
@@ -616,7 +609,54 @@ func SBCReadCapacity16(host int, cmd *api.SCSICommand) api.SAMStat {
}
func SBCGetLbaStatus(host int, cmd *api.SCSICommand) api.SAMStat {
var (
key = ILLEGAL_REQUEST
asc = ASC_INVALID_FIELD_IN_CDB
dev = cmd.Device
scb = cmd.SCB.Bytes()
lba uint64
tl uint32
)
if dev.Attrs.Removable && !dev.Attrs.Online {
key = NOT_READY
asc = ASC_MEDIUM_NOT_PRESENT
goto sense
}
if cmd.SCB.Bytes()[1]&0xe0 != 0 {
// We only support protection information type 0
key = ILLEGAL_REQUEST
asc = ASC_INVALID_FIELD_IN_CDB
goto sense
}
if cmd.SCB.Bytes()[1]&0x02 == 0 {
// no data compare with the media
return api.SAMStatGood
}
lba = getSCSIReadWriteOffset(scb)
tl = getSCSIReadWriteCount(scb)
// Verify that we are not doing i/o beyond the end-of-lun
if tl != 0 {
if lba+uint64(tl) < lba || lba+uint64(tl) > dev.Size>>dev.BlockShift {
key = ILLEGAL_REQUEST
asc = ASC_LBA_OUT_OF_RANGE
log.Warnf("sense: lba: %d, tl: %d, size: %d", lba, tl, dev.Size>>dev.BlockShift)
goto sense
}
} else {
if lba >= dev.Size>>dev.BlockShift {
key = ILLEGAL_REQUEST
asc = ASC_LBA_OUT_OF_RANGE
log.Warnf("sense")
goto sense
}
}
return api.SAMStatGood
sense:
cmd.InSDBBuffer.Resid = 0
BuildSenseData(cmd, key, asc)
return api.SAMStatCheckCondition
}
func SBCServiceAction(host int, cmd *api.SCSICommand) api.SAMStat {
@@ -626,6 +666,8 @@ func SBCServiceAction(host int, cmd *api.SCSICommand) api.SAMStat {
return SBCReadCapacity(host, cmd)
case api.SAI_READ_CAPACITY_16:
return SBCReadCapacity16(host, cmd)
case api.SAI_GET_LBA_STATUS:
return SBCGetLbaStatus(host, cmd)
}
return api.SAMStatGood
}

4
pkg/scsi/scsi.go
View File

@@ -149,8 +149,8 @@ func BuildSenseData(cmd *api.SCSICommand, key byte, asc SCSISubError) {
for i := 0; i < 4; i++ {
senseBuffer.WriteByte(0x00)
}
senseBuffer.WriteByte((byte(asc) >> 8) & 0xff)
senseBuffer.WriteByte(byte(asc) & 0xff)
senseBuffer.WriteByte(byte((uint16(asc) >> 8) & 0xff))
senseBuffer.WriteByte(byte(asc & 0x00ff))
for i := 0; i < 4; i++ {
senseBuffer.WriteByte(0x00)
}

6
pkg/scsi/spc.go
View File

@@ -1,5 +1,5 @@
/*
Copyright 2016 The GoStor Authors All rights reserved.
Copyright 2017 The GoStor Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -566,7 +566,7 @@ func reportOpcodesAll(cmd *api.SCSICommand, rctd int) error {
}
func reportOpcodeOne(cmd *api.SCSICommand, rctd int, opcode byte, rsa uint16, serviceAction bool) error {
return nil
return fmt.Errorf("non support")
}
func SPCReportSupportedOperationCodes(host int, cmd *api.SCSICommand) api.SAMStat {
@@ -731,7 +731,7 @@ func SPCPRReportCapabilities(host int, cmd *api.SCSICommand) api.SAMStat {
actualLength uint32 = 0
data *bytes.Buffer = cmd.InSDBBuffer.Buffer
)
allocationLength := util.GetUnalignedUint32(cmd.SCB.Bytes()[7:9])
allocationLength := uint32(util.GetUnalignedUint16(cmd.SCB.Bytes()[7:9]))
if allocationLength < 8 {
goto sense
}