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96 lines
2.2 KiB
96 lines
2.2 KiB
/*
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* Mini Object Storage, (C) 2014 Minio, Inc.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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// !build linux,amd64
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package scsi
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import (
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"errors"
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"io/ioutil"
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"path"
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)
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// NOTE : supporting virtio based scsi devices
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// is out of scope for this implementation
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type _Scsi struct {
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device string
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attrMap map[string][]byte
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}
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type Devices struct {
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List []_Scsi
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}
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func (d *Devices) Get() error {
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var scsidevices []string
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var scsiAttrList []string
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sysfs := path.Join(SYSFS_SCSI_DEVICES)
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sysFiles, err := ioutil.ReadDir(sysfs)
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if err != nil {
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return err
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}
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scsidevices = filterdevices(sysFiles)
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if len(scsidevices) == 0 {
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return errors.New("No scsi devices found on the system")
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}
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for _, scsi := range scsidevices {
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var _scsi _Scsi
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scsiAttrPath := path.Join(sysfs, scsi, "/")
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scsiAttrs, err := ioutil.ReadDir(scsiAttrPath)
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if err != nil {
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return err
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}
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scsiBlockPath := path.Join(sysfs, scsi, SYSFS_BLOCK)
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scsidevList, err := ioutil.ReadDir(scsiBlockPath)
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if err != nil {
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return err
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}
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if len(scsidevList) > 1 {
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return errors.New("Scsi address points to multiple block devices")
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}
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_scsi.device = UDEV + scsidevList[0].Name()
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for _, sa := range scsiAttrs {
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// Skip directories
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if sa.IsDir() {
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continue
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}
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// Skip symlinks
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if !sa.Mode().IsRegular() {
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continue
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}
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// Skip, not readable, write-only
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if sa.Mode().Perm() == 128 {
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continue
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}
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scsiAttrList = append(scsiAttrList, sa.Name())
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}
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if len(scsiAttrList) == 0 {
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return errors.New("No scsi attributes found")
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}
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attrMap := getattrs(scsiAttrPath, scsiAttrList)
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_scsi.attrMap = attrMap
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d.List = append(d.List, _scsi)
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}
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return nil
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}
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