mount

package
v1.8.1 Latest Latest
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 Go to latest Published: Oct 11, 2017 License: Apache-2.0 Imports: 13 Imported by: 0

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

View Source 
const FakeActionMount = "mount"

Values for FakeAction.Action

View Source 
const FakeActionUnmount = "unmount"
View Source 
const (
	MountsInGlobalPDPath = "mounts"
)

Variables

This section is empty.

Functions

func GetDeviceNameFromMount added in v0.16.0 

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 added in v0.13.0 

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

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

func GetMountRefsByDev added in v1.8.1 

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

GetMountRefsByDev finds all references to the device provided by mountPath; returns a list of paths.

func IsNotMountPoint added in v1.4.6 

func IsNotMountPoint(mounter Interface, file string) (bool, error)

IsNotMountPoint determines if a directory is a mountpoint. It should return ErrNotExist when the directory does not exist. This method uses the List() of all mountpoints It is more extensive than IsLikelyNotMountPoint and it detects bind mounts in linux

Types

type Exec added in v1.8.1 

type Exec interface {
	// Run executes a command and returns its stdout + stderr combined in one
	// stream.
	Run(cmd string, args ...string) ([]byte, error)
}

Exec executes command where mount utilities are. This can be either the host, container where kubelet runs or even a remote pod with mount utilities. Usual pkg/util/exec interface is not used because kubelet.RunInContainer does not provide stdin/stdout/stderr streams.

func NewOsExec added in v1.8.1 

func NewOsExec() Exec

type FakeAction added in v0.13.1 

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 FakeExec added in v1.8.1 

type FakeExec struct {
	// contains filtered or unexported fields
}

Fake for testing.

func NewFakeExec added in v1.8.1 

func NewFakeExec(run runHook) *FakeExec

func (*FakeExec) Run added in v1.8.1 

func (f *FakeExec) Run(cmd string, args ...string) ([]byte, error)

type FakeMounter added in v0.13.0 

type FakeMounter struct {
	MountPoints []MountPoint
	Log         []FakeAction
	// contains filtered or unexported fields
}

FakeMounter implements mount.Interface for tests.

func (*FakeMounter) DeviceOpened added in v1.4.0 

func (f *FakeMounter) DeviceOpened(pathname string) (bool, error)

func (*FakeMounter) GetDeviceNameFromMount added in v1.3.6 

func (f *FakeMounter) GetDeviceNameFromMount(mountPath, pluginDir string) (string, error)

func (*FakeMounter) IsLikelyNotMountPoint added in v1.1.0 

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

func (*FakeMounter) IsMountPointMatch added in v1.7.2 

func (f *FakeMounter) IsMountPointMatch(mp MountPoint, dir string) bool

func (*FakeMounter) IsNotMountPoint added in v1.7.2 

func (f *FakeMounter) IsNotMountPoint(dir string) (bool, error)

func (*FakeMounter) List added in v0.13.0 

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

func (*FakeMounter) MakeRShared added in v1.8.1 

func (f *FakeMounter) MakeRShared(path string) error

func (*FakeMounter) Mount added in v0.13.0 

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

func (*FakeMounter) PathIsDevice added in v1.4.0 

func (f *FakeMounter) PathIsDevice(pathname string) (bool, error)

func (*FakeMounter) ResetLog added in v0.13.1 

func (f *FakeMounter) ResetLog()

func (*FakeMounter) Unmount added in v0.13.0 

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)
	// IsMountPointMatch determines if the mountpoint matches the dir
	IsMountPointMatch(mp MountPoint, dir string) bool
	// IsNotMountPoint determines if a directory is a mountpoint.
	// It should return ErrNotExist when the directory does not exist.
	// IsNotMountPoint is more expensive than IsLikelyNotMountPoint.
	// IsNotMountPoint detects bind mounts in linux.
	// IsNotMountPoint enumerates all the mountpoints using List() and
	// the list of mountpoints may be large, then it uses
	// IsMountPointMatch to evaluate whether the directory is a mountpoint
	IsNotMountPoint(file string) (bool, error)
	// IsLikelyNotMountPoint uses heuristics to determine if a directory
	// is a mountpoint.
	// It should return ErrNotExist when the directory does not exist.
	// IsLikelyNotMountPoint does NOT properly detect all mountpoint types
	// most notably linux bind mounts.
	IsLikelyNotMountPoint(file string) (bool, error)
	// DeviceOpened determines if the device is in use elsewhere
	// on the system, i.e. still mounted.
	DeviceOpened(pathname string) (bool, error)
	// PathIsDevice determines if a path is a device.
	PathIsDevice(pathname string) (bool, error)
	// GetDeviceNameFromMount finds the device name by checking the mount path
	// to get the global mount path which matches its plugin directory
	GetDeviceNameFromMount(mountPath, pluginDir string) (string, error)
	// MakeRShared checks that given path is on a mount with 'rshared' mount
	// propagation. If not, it bind-mounts the path as rshared.
	MakeRShared(path string) error
}

func New 

func New(mounterPath string) Interface

New returns a mount.Interface for the current system. It provides options to override the default mounter behavior. mounterPath allows using an alternative to `/bin/mount` for mounting.

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 added in v0.10.0 

type Mounter struct {
	// contains filtered or unexported fields
}

func (*Mounter) DeviceOpened added in v1.4.0 

func (mounter *Mounter) DeviceOpened(pathname string) (bool, error)

func (*Mounter) GetDeviceNameFromMount added in v1.3.6 

func (mounter *Mounter) GetDeviceNameFromMount(mountPath, pluginDir string) (string, error)

func (*Mounter) IsLikelyNotMountPoint added in v1.1.0 

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

func (*Mounter) IsMountPointMatch added in v1.7.2 

func (mounter *Mounter) IsMountPointMatch(mp MountPoint, dir string) bool

func (*Mounter) IsNotMountPoint added in v1.7.2 

func (mounter *Mounter) IsNotMountPoint(dir string) (bool, error)

func (*Mounter) List added in v0.10.0 

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

func (*Mounter) MakeRShared added in v1.8.1 

func (mounter *Mounter) MakeRShared(path string) error

func (*Mounter) Mount added in v0.10.0 

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

func (*Mounter) PathIsDevice added in v1.4.0 

func (mounter *Mounter) PathIsDevice(pathname string) (bool, error)

func (*Mounter) Unmount added in v0.10.0 

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

type NsenterMounter added in v0.17.0 

type NsenterMounter struct{}

func NewNsenterMounter added in v1.0.6 

func NewNsenterMounter() *NsenterMounter

func (*NsenterMounter) DeviceOpened added in v1.4.0 

func (*NsenterMounter) DeviceOpened(pathname string) (bool, error)

func (*NsenterMounter) GetDeviceNameFromMount added in v1.3.6 

func (*NsenterMounter) GetDeviceNameFromMount(mountPath, pluginDir string) (string, error)

func (*NsenterMounter) IsLikelyNotMountPoint added in v1.1.0 

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

func (*NsenterMounter) IsMountPointMatch added in v1.7.2 

func (*NsenterMounter) IsMountPointMatch(mp MountPoint, dir string) bool

func (*NsenterMounter) IsNotMountPoint added in v1.7.2 

func (m *NsenterMounter) IsNotMountPoint(dir string) (bool, error)

func (*NsenterMounter) List added in v0.17.0 

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

func (*NsenterMounter) MakeRShared added in v1.8.1 

func (*NsenterMounter) MakeRShared(path string) error

func (*NsenterMounter) Mount added in v0.17.0 

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

func (*NsenterMounter) PathIsDevice added in v1.4.0 

func (*NsenterMounter) PathIsDevice(pathname string) (bool, error)

func (*NsenterMounter) Unmount added in v0.17.0 

func (*NsenterMounter) Unmount(target string) error

type SafeFormatAndMount added in v1.1.0 

type SafeFormatAndMount struct {
	Interface
	Exec
}

SafeFormatAndMount probes a device to see if it is formatted. Namely it checks to see if a file system is present. If so it mounts it otherwise the device is formatted first then mounted.

func (*SafeFormatAndMount) FormatAndMount added in v1.2.0 

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

FormatAndMount formats the given disk, if needed, and mounts it. That is if the disk is not formatted and it is not being mounted as read-only it will format it first then mount it. Otherwise, if the disk is already formatted or it is being mounted as read-only, it will be mounted without formatting.

Source Files

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