linux/open_by_handle: recover gracefully when a file does not exist
linux/open_by_handle: recover gracefully when a file does not exist

On Gentoo, /etc/hostname does not exist.  The host name is configured
with /etc/conf.d/hostname.

fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared