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package jail
import (
"fmt"
"golang.org/x/sys/unix"
)
func (j *Jail) mount() error {
for dest, src := range j.bindMounts {
var opts uintptr = unix.MS_BIND | unix.MS_REC
if err := unix.Mount(src, dest, "none", opts, ""); err != nil {
return fmt.Errorf("Failed to bind mount %s on %s. %s", src, dest, err)
}
}
return nil
}
func (j *Jail) unmount() error {
for dest := range j.bindMounts {
if err := unix.Unmount(dest, unix.MNT_DETACH); err != nil {
// A second invocation on unmount with MNT_DETACH flag will return EINVAL
// there's no need to abort with an error if bind mountpoint is already unmounted
if err != unix.EINVAL {
return fmt.Errorf("Failed to unmount %s. %s", dest, err)
}
}
}
return nil
}
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