Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func All

func All(mounts []Mount, target string) error

    All mounts all the provided mounts to the provided target

    func AttachLoopDevice

    func AttachLoopDevice(backingFile string) (string, error)

      Attach a specified backing file to a loop device

      func CleanupTempMounts

      func CleanupTempMounts(flags int) (warnings []error, err error)

        CleanupTempMounts all temp mounts and remove the directories

        func DetachLoopDevice

        func DetachLoopDevice(devices ...string) error

          Detach a loop device

          func SetTempMountLocation

          func SetTempMountLocation(root string) error

            SetTempMountLocation sets the temporary mount location

            func Unmount

            func Unmount(target string, flags int) error

              Unmount the provided mount path with the flags

              func UnmountAll

              func UnmountAll(mount string, flags int) error

                UnmountAll repeatedly unmounts the given mount point until there are no mounts remaining (EINVAL is returned by mount), which is useful for undoing a stack of mounts on the same mount point. UnmountAll all is noop when the first argument is an empty string. This is done when the containerd client did not specify any rootfs mounts (e.g. because the rootfs is managed outside containerd) UnmountAll is noop when the mount path does not exist.

                func WithTempMount

                func WithTempMount(ctx context.Context, mounts []Mount, f func(root string) error) (err error)

                  WithTempMount mounts the provided mounts to a temp dir, and pass the temp dir to f. The mounts are valid during the call to the f. Finally we will unmount and remove the temp dir regardless of the result of f.

                  Types

                  type Info

                  type Info = mountinfo.Info

                    Info reveals information about a particular mounted filesystem. This struct is populated from the content in the /proc/<pid>/mountinfo file.

                    func Lookup

                    func Lookup(dir string) (Info, error)

                      Lookup returns the mount info corresponds to the path.

                      type LoopParams

                      type LoopParams struct {
                      	// Loop device should forbid write
                      	Readonly bool
                      	// Loop device is automatically cleared by kernel when the
                      	// last opener closes it
                      	Autoclear bool
                      	// Use direct IO to access the loop backing file
                      	Direct bool
                      }

                        LoopParams parameters to control loop device setup

                        type Mount

                        type Mount struct {
                        	// Type specifies the host-specific of the mount.
                        	Type string
                        	// Source specifies where to mount from. Depending on the host system, this
                        	// can be a source path or device.
                        	Source string
                        	// Options contains zero or more fstab-style mount options. Typically,
                        	// these are platform specific.
                        	Options []string
                        }

                          Mount is the lingua franca of containerd. A mount represents a serialized mount syscall. Components either emit or consume mounts.

                          func (*Mount) Mount

                          func (m *Mount) Mount(target string) (err error)

                            Mount to the provided target path.

                            If m.Type starts with "fuse." or "fuse3.", "mount.fuse" or "mount.fuse3" helper binary is called.