51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package fstestutil
|
|
|
|
import (
|
|
"errors"
|
|
"io/ioutil"
|
|
"strings"
|
|
)
|
|
|
|
// Linux /proc/mounts shows current mounts.
|
|
// Same format as /etc/fstab. Quoting getmntent(3):
|
|
//
|
|
// Since fields in the mtab and fstab files are separated by whitespace,
|
|
// octal escapes are used to represent the four characters space (\040),
|
|
// tab (\011), newline (\012) and backslash (\134) in those files when
|
|
// they occur in one of the four strings in a mntent structure.
|
|
//
|
|
// http://linux.die.net/man/3/getmntent
|
|
|
|
var fstabUnescape = strings.NewReplacer(
|
|
`\040`, "\040",
|
|
`\011`, "\011",
|
|
`\012`, "\012",
|
|
`\134`, "\134",
|
|
)
|
|
|
|
var errNotFound = errors.New("mount not found")
|
|
|
|
func getMountInfo(mnt string) (*MountInfo, error) {
|
|
data, err := ioutil.ReadFile("/proc/mounts")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, line := range strings.Split(string(data), "\n") {
|
|
fields := strings.Fields(line)
|
|
if len(fields) < 3 {
|
|
continue
|
|
}
|
|
// Fields are: fsname dir type opts freq passno
|
|
fsname := fstabUnescape.Replace(fields[0])
|
|
dir := fstabUnescape.Replace(fields[1])
|
|
fstype := fstabUnescape.Replace(fields[2])
|
|
if mnt == dir {
|
|
info := &MountInfo{
|
|
FSName: fsname,
|
|
Type: fstype,
|
|
}
|
|
return info, nil
|
|
}
|
|
}
|
|
return nil, errNotFound
|
|
}
|