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utils: delete unused code #1411

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Merged
runcom merged 1 commit into from
Mar 9, 2018
Merged

utils: delete unused code #1411

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75 changes: 0 additions & 75 deletions utils/filesystem.go
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Original file line number Diff line number Diff line change
@@ -1,15 +1,8 @@
package utils

import (
"fmt"
"golang.org/x/sys/unix"
"io/ioutil"
"os"
"path/filepath"
"strings"
"syscall"

"github.com/docker/docker/pkg/mount"
)

// GetDiskUsageStats accepts a path to a directory or file
Expand Down Expand Up @@ -39,71 +32,3 @@ func GetDiskUsageStats(path string) (uint64, uint64, error) {

return dirSize, inodeCount, err
}

// GetDeviceUUIDFromPath accepts a path, and will find the device
// corresponding to the path and return the UUID of that device
func GetDeviceUUIDFromPath(devicePath string) (string, error) {
const dir = "/dev/disk/by-uuid"

if _, err := os.Stat(dir); os.IsNotExist(err) {
return "", nil
}

files, err := ioutil.ReadDir(dir)
if err != nil {
return "", err
}

for _, file := range files {
path := filepath.Join(dir, file.Name())
target, err := os.Readlink(path)
if err != nil {
continue
}
device, err := filepath.Abs(filepath.Join(dir, target))
if err != nil {
return "", fmt.Errorf("failed to resolve the absolute path of %q", filepath.Join(dir, target))
}
if strings.Compare(device, devicePath) == 0 {
return file.Name(), nil
}
}

return "", fmt.Errorf("device path %s not found", devicePath)
}

// GetStattFromPath is a helper function that returns the Stat_t
// object for a given path
func GetStattFromPath(path string) (syscall.Stat_t, error) {
statInfo := syscall.Stat_t{}
err := syscall.Lstat(path, &statInfo)
if err != nil {
return statInfo, err
}
return statInfo, nil
}

// GetDeviceNameFromPath iterates through the mounts and matches
// the one that the provided path is on
func GetDeviceNameFromPath(path string) (string, error) {
statInfo, err := GetStattFromPath(path)
if err != nil {
return "", err
}

mounts, err := mount.GetMounts()
if err != nil {
return "", err
}

queryMajor := int(unix.Major(uint64(statInfo.Dev)))
queryMinor := int(unix.Minor(uint64(statInfo.Dev)))

for _, mount := range mounts {
if mount.Minor == queryMinor && mount.Major == queryMajor {
return mount.Source, nil
}
}

return "", fmt.Errorf("no match found")
}