tree e4518f8381e52df07719146e77bf600e763ac0af
parent 1324f06384870fdd6e5829dc4f775afe4de61867
author Kevin Wolf <kwolf@redhat.com> 1548159331 +0100
committer Kevin Wolf <kwolf@redhat.com> 1549025205 +0100

block: Apply auto-read-only for ro-whitelist drivers

If QEMU was configured with a driver in --block-drv-ro-whitelist, trying
to use that driver read-write resulted in an error message even if
auto-read-only=on was set.

Consider auto-read-only=on for the whitelist checking and use it to
automatically degrade to read-only for block drivers on the read-only
whitelist.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>