// Put releases the system resources for the specified id,
// e.g, unmounting layered filesystem.
func (d *Driver) Put(id string) error {
dlog.Debugf("Releasing chain FS for %s", id)
cID := C.CString(id)
_, err := C.release_chainfs(cID)
// C.release_cache()
return err
}
// Get returns the mountpoint for the layered filesystem referred
// to by this id. You can optionally specify a mountLabel or "".
// Returns the absolute path to the mounted layered filesystem.
func (d *Driver) Get(id, mountLabel string) (string, error) {
cID := C.CString(id)
ret, err := C.alloc_chainfs(cID)
if int(ret) != 0 {
dlog.Warnf("Error while creating a chain FS for %s", id)
return "", err
} else {
dlog.Debugf("Created a chain FS for %s", id)
chainPath := path.Join(virtPath, id)
return chainPath, err
}
}
// Shutdown and cleanup.
func (d *driver) Shutdown() {
dlog.Debugf("%s Shutting down", Name)
}