mount

Documentation

Overview

Package mount defines an interface to mounting filesystems.

TODO(thockin): This whole pkg is pretty linux-centric. As soon as we have an alternate platform, we will need to abstract further.

Index

• Constants
• func GetDeviceNameFromMount(mounter Interface, mountPath string) (string, int, error)
• func GetMountRefs(mounter Interface, mountPath string) ([]string, error)
• type FakeAction
• type FakeMounter
  • func (f *FakeMounter) IsLikelyNotMountPoint(file string) (bool, error)
  • func (f *FakeMounter) List() ([]MountPoint, error)
  • func (f *FakeMounter) Mount(source string, target string, fstype string, options []string) error
  • func (f *FakeMounter) ResetLog()
  • func (f *FakeMounter) Unmount(target string) error
• type Interface
  • func New() Interface
• type MountPoint
• type Mounter
  • func (mounter *Mounter) IsLikelyNotMountPoint(file string) (bool, error)
  • func (mounter *Mounter) List() ([]MountPoint, error)
  • func (mounter *Mounter) Mount(source string, target string, fstype string, options []string) error
  • func (mounter *Mounter) Unmount(target string) error
• type NsenterMounter
  • func NewNsenterMounter() *NsenterMounter
  • func (*NsenterMounter) IsLikelyNotMountPoint(file string) (bool, error)
  • func (*NsenterMounter) List() ([]MountPoint, error)
  • func (*NsenterMounter) Mount(source string, target string, fstype string, options []string) error
  • func (*NsenterMounter) Unmount(target string) error
• type SafeFormatAndMount
  • func (mounter *SafeFormatAndMount) Mount(source string, target string, fstype string, options []string) error

Constants

const FakeActionMount = "mount"

Values for FakeAction.Action

const FakeActionUnmount = "unmount"

Functions

func GetDeviceNameFromMount

func GetDeviceNameFromMount(mounter Interface, mountPath string) (string, int, error)

GetDeviceNameFromMount: given a mnt point, find the device from /proc/mounts returns the device name, reference count, and error code

func GetMountRefs

func GetMountRefs(mounter Interface, mountPath string) ([]string, error)

GetMountRefs finds all other references to the device referenced by mountPath; returns a list of paths.

Types

type FakeAction

type FakeAction struct {
	Action string // "mount" or "unmount"
	Target string // applies to both mount and unmount actions
	Source string // applies only to "mount" actions
	FSType string // applies only to "mount" actions
}

FakeAction objects are logged every time a fake mount or unmount is called.

type FakeMounter

type FakeMounter struct {
	MountPoints []MountPoint
	Log         []FakeAction
}

FakeMounter implements mount.Interface for tests.

func (*FakeMounter) IsLikelyNotMountPoint

func (f *FakeMounter) IsLikelyNotMountPoint(file string) (bool, error)

func (*FakeMounter) List

func (f *FakeMounter) List() ([]MountPoint, error)

func (*FakeMounter) Mount

func (f *FakeMounter) Mount(source string, target string, fstype string, options []string) error

func (*FakeMounter) ResetLog

func (f *FakeMounter) ResetLog()

func (*FakeMounter) Unmount

func (f *FakeMounter) Unmount(target string) error

type Interface

type Interface interface {
	// Mount mounts source to target as fstype with given options.
	Mount(source string, target string, fstype string, options []string) error
	// Unmount unmounts given target.
	Unmount(target string) error
	// List returns a list of all mounted filesystems.  This can be large.
	// On some platforms, reading mounts is not guaranteed consistent (i.e.
	// it could change between chunked reads). This is guaranteed to be
	// consistent.
	List() ([]MountPoint, error)
	// IsLikelyNotMountPoint determines if a directory is a mountpoint.
	IsLikelyNotMountPoint(file string) (bool, error)
}

func New

func New() Interface

New returns a mount.Interface for the current system.

type MountPoint

type MountPoint struct {
	Device string
	Path   string
	Type   string
	Opts   []string
	Freq   int
	Pass   int
}

This represents a single line in /proc/mounts or /etc/fstab.

type Mounter

type Mounter struct{}

func (*Mounter) IsLikelyNotMountPoint

func (mounter *Mounter) IsLikelyNotMountPoint(file string) (bool, error)

func (*Mounter) List

func (mounter *Mounter) List() ([]MountPoint, error)

func (*Mounter) Mount

func (mounter *Mounter) Mount(source string, target string, fstype string, options []string) error

func (*Mounter) Unmount

func (mounter *Mounter) Unmount(target string) error

type NsenterMounter

type NsenterMounter struct{}

func NewNsenterMounter

func NewNsenterMounter() *NsenterMounter

func (*NsenterMounter) IsLikelyNotMountPoint

func (*NsenterMounter) IsLikelyNotMountPoint(file string) (bool, error)

func (*NsenterMounter) List

func (*NsenterMounter) List() ([]MountPoint, error)

func (*NsenterMounter) Mount

func (*NsenterMounter) Mount(source string, target string, fstype string, options []string) error

func (*NsenterMounter) Unmount

func (*NsenterMounter) Unmount(target string) error

type SafeFormatAndMount

type SafeFormatAndMount struct {
	Interface
	Runner exec.Interface
}

SafeFormatAndMount probes a device to see if it is formatted. If so it mounts it otherwise it formats it and mounts it

func (*SafeFormatAndMount) Mount

func (mounter *SafeFormatAndMount) Mount(source string, target string, fstype string, options []string) error

Mount mounts the given disk. If the disk is not formatted and the disk is not being mounted as read only it will format the disk first then mount it.