Function UnmountMounts

core/mount/mount.go:62–76

UnmountMounts unmounts all the mounts under a target in the reverse order of the mounts array provided.

(mounts []Mount, target string, flags int)

// UnmountMounts unmounts all the mounts under a target in the reverse order of
// the mounts array provided.
func UnmountMounts(mounts []Mount, target string, flags int) error {
	for i := len(mounts) - 1; i >= 0; i-- {
		mountpoint, err := fs.RootPath(target, mounts[i].Target)
		if err != nil {
			return err
		}

		if err := UnmountAll(mountpoint, flags); err != nil {
			if i == len(mounts)-1 { // last mount
				return err
			}
		}
	}
	return nil
}

// CanonicalizePath makes path absolute and resolves symlinks in it.
// Path must exist.