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minio/pkg/disk/root_disk_unix.go

62 lines
1.7 KiB

// +build !windows
/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* 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 disk
import (
"os"
"syscall"
)
// IsRootDisk returns if diskPath belongs to root-disk, i.e the disk mounted at "/"
func IsRootDisk(diskPath string) (bool, error) {
rootDisk := false
diskInfo, err := os.Stat(diskPath)
if err != nil {
return false, err
}
rootHostsInfo, err := os.Stat("/etc/hosts")
if err != nil {
return false, err
}
rootInfo, err := os.Stat("/")
if err != nil {
return false, err
}
diskStat, diskStatOK := diskInfo.Sys().(*syscall.Stat_t)
rootHostsStat, rootHostsStatOK := rootHostsInfo.Sys().(*syscall.Stat_t)
rootStat, rootStatOK := rootInfo.Sys().(*syscall.Stat_t)
if diskStatOK && rootHostsStatOK {
if diskStat.Dev == rootHostsStat.Dev {
// Indicate if the disk path is on root disk. This is used to indicate the healing
// process not to format the drive and end up healing it.
rootDisk = true
}
}
if !rootDisk {
if diskStatOK && rootStatOK {
if diskStat.Dev == rootStat.Dev {
// Indicate if the disk path is on root disk. This is used to indicate the healing
// process not to format the drive and end up healing it.
rootDisk = true
}
}
}
return rootDisk, nil
}