mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
package mount
|
|
|
|
import (
|
|
"strings"
|
|
"syscall"
|
|
)
|
|
|
|
// Parse fstab type mount options into mount() flags
|
|
// and device specific data
|
|
func parseOptions(options string) (int, string) {
|
|
var (
|
|
flag int
|
|
data []string
|
|
)
|
|
|
|
flags := map[string]struct {
|
|
clear bool
|
|
flag int
|
|
}{
|
|
"defaults": {false, 0},
|
|
"ro": {false, syscall.MS_RDONLY},
|
|
"rw": {true, syscall.MS_RDONLY},
|
|
"suid": {true, syscall.MS_NOSUID},
|
|
"nosuid": {false, syscall.MS_NOSUID},
|
|
"dev": {true, syscall.MS_NODEV},
|
|
"nodev": {false, syscall.MS_NODEV},
|
|
"exec": {true, syscall.MS_NOEXEC},
|
|
"noexec": {false, syscall.MS_NOEXEC},
|
|
"sync": {false, syscall.MS_SYNCHRONOUS},
|
|
"async": {true, syscall.MS_SYNCHRONOUS},
|
|
"dirsync": {false, syscall.MS_DIRSYNC},
|
|
"remount": {false, syscall.MS_REMOUNT},
|
|
"mand": {false, syscall.MS_MANDLOCK},
|
|
"nomand": {true, syscall.MS_MANDLOCK},
|
|
"atime": {true, syscall.MS_NOATIME},
|
|
"noatime": {false, syscall.MS_NOATIME},
|
|
"diratime": {true, syscall.MS_NODIRATIME},
|
|
"nodiratime": {false, syscall.MS_NODIRATIME},
|
|
"bind": {false, syscall.MS_BIND},
|
|
"rbind": {false, syscall.MS_BIND | syscall.MS_REC},
|
|
"relatime": {false, syscall.MS_RELATIME},
|
|
"norelatime": {true, syscall.MS_RELATIME},
|
|
"strictatime": {false, syscall.MS_STRICTATIME},
|
|
"nostrictatime": {true, syscall.MS_STRICTATIME},
|
|
}
|
|
|
|
for _, o := range strings.Split(options, ",") {
|
|
// If the option does not exist in the flags table then it is a
|
|
// data value for a specific fs type
|
|
if f, exists := flags[o]; exists {
|
|
if f.clear {
|
|
flag &= ^f.flag
|
|
} else {
|
|
flag |= f.flag
|
|
}
|
|
} else {
|
|
data = append(data, o)
|
|
}
|
|
}
|
|
return flag, strings.Join(data, ",")
|
|
}
|