1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// Package mtab parses /proc/self/mounts entries on a Linux system.
package mtab // import "github.com/artyom/mtab"
import (
"fmt"
"io"
"os"
"strings"
)
// Entry corresponds to mntent struct. See getmntent(3) manpage for further
// details.
type Entry struct {
Fsname string // name of mounted file system
Dir string // file system path prefix
Type string // mount type
Opts string // mount options
Freq int // dump frequency in days
Passno int // pass number on parallel fsck
}
const mtabFmt = `%s %s %s %s %d %d`
var escaped = strings.NewReplacer(
`\040`, " ",
`\011`, "\t",
`\012`, "\n",
`\134`, `\`,
)
// unescapeFields unescapes characters on string fields. See getmntent(3)
// manpage for details.
func unescapeFields(m *Entry) {
for _, f := range [...]*string{&m.Fsname, &m.Dir, &m.Type, &m.Opts} {
*f = escaped.Replace(*f)
}
}
// Entries reads mtab entries from a given file. Usually you should use
// `/etc/fstab` or `/proc/self/mounts` as a file name.
func Entries(fname string) ([]Entry, error) {
f, err := os.Open(fname)
if err != nil {
return nil, err
}
defer f.Close()
var out []Entry
READLOOP:
for {
e := Entry{}
n, err := fmt.Fscanf(f, mtabFmt, &e.Fsname, &e.Dir, &e.Type, &e.Opts, &e.Freq, &e.Passno)
switch err {
case io.EOF:
break READLOOP
case nil:
default:
return out, err
}
if n != 6 {
return out, fmt.Errorf("wrong line format (invalid number of fields)")
}
unescapeFields(&e)
out = append(out, e)
}
return out, nil
}
|
