| package mount |
| |
| import ( |
| "time" |
| ) |
| |
| // GetMounts retrieves a list of mounts for the current running process. |
| func GetMounts() ([]*Info, error) { |
| return parseMountTable() |
| } |
| |
| // Mounted looks at /proc/self/mountinfo to determine of the specified |
| // mountpoint has been mounted |
| func Mounted(mountpoint string) (bool, error) { |
| entries, err := parseMountTable() |
| if err != nil { |
| return false, err |
| } |
| |
| // Search the table for the mountpoint |
| for _, e := range entries { |
| if e.Mountpoint == mountpoint { |
| return true, nil |
| } |
| } |
| return false, nil |
| } |
| |
| // Mount will mount filesystem according to the specified configuration, on the |
| // condition that the target path is *not* already mounted. Options must be |
| // specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See |
| // flags.go for supported option flags. |
| func Mount(device, target, mType, options string) error { |
| flag, _ := parseOptions(options) |
| if flag&REMOUNT != REMOUNT { |
| if mounted, err := Mounted(target); err != nil || mounted { |
| return err |
| } |
| } |
| return ForceMount(device, target, mType, options) |
| } |
| |
| // ForceMount will mount a filesystem according to the specified configuration, |
| // *regardless* if the target path is not already mounted. Options must be |
| // specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See |
| // flags.go for supported option flags. |
| func ForceMount(device, target, mType, options string) error { |
| flag, data := parseOptions(options) |
| if err := mount(device, target, mType, uintptr(flag), data); err != nil { |
| return err |
| } |
| return nil |
| } |
| |
| // Unmount will unmount the target filesystem, so long as it is mounted. |
| func Unmount(target string) error { |
| if mounted, err := Mounted(target); err != nil || !mounted { |
| return err |
| } |
| return ForceUnmount(target) |
| } |
| |
| // ForceUnmount will force an unmount of the target filesystem, regardless if |
| // it is mounted or not. |
| func ForceUnmount(target string) (err error) { |
| // Simple retry logic for unmount |
| for i := 0; i < 10; i++ { |
| if err = unmount(target, 0); err == nil { |
| return nil |
| } |
| time.Sleep(100 * time.Millisecond) |
| } |
| return |
| } |