tree c5f9d8362d8b448961cb0bf355a445e14646dec4
parent 2030fa496d74b49220308eaccf656e2338019cfd
author Amit Shah <amit.shah@redhat.com> 1259214938 +0530
committer Rusty Russell <rusty@rustcorp.com.au> 1266983575 +1030

virtio: console: Ensure only one process can have a port open at a time

Add a guest_connected field that ensures only one process
can have a port open at a time.

This also ensures we don't have a race when we later add support for
dropping buffers when closing the char dev and buffer caching is turned
off for the particular port.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>