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vhost_user_*: Create a vhost::Listener in advance

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Changes is vhost crate require VhostUserDaemon users to create and
provide a vhost::Listener in advance. This allows us to adopt
sandboxing strategies in the future, by being able to create the UNIX
socket before switching to a restricted namespace.

Update also the reference to vhost crate in Cargo.lock to point to the
latest commit from the dragonball branch.

Signed-off-by: Sergio Lopez <slp@redhat.com>
This commit is contained in:
Sergio Lopez
2020-04-24 13:33:00 +02:00
committed by Sebastien Boeuf
parent fa844865a5
commit c4bf383fd7
5 changed files with 23 additions and 30 deletions
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9
vhost_user_block/src/lib.rs
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@@ -33,6 +33,7 @@ use std::time::Instant;
use std::vec::Vec;
use std::{convert, error, fmt, io};
use vhost_rs::vhost_user::message::*;
use vhost_rs::vhost_user::Listener;
use vhost_user_backend::{VhostUserBackend, VhostUserDaemon, Vring};
use virtio_bindings::bindings::virtio_blk::*;
use virtio_bindings::bindings::virtio_ring::VIRTIO_RING_F_EVENT_IDX;
@@ -452,12 +453,14 @@ pub fn start_block_backend(backend_command: &str) {
debug!("blk_backend is created!\n");
let listener = Listener::new(&backend_config.socket, true).unwrap();
let name = "vhost-user-blk-backend";
let mut blk_daemon =
VhostUserDaemon::new(name.to_string(), backend_config.socket, blk_backend.clone()).unwrap();
let mut blk_daemon = VhostUserDaemon::new(name.to_string(), blk_backend.clone()).unwrap();
debug!("blk_daemon is created!\n");
if let Err(e) = blk_daemon.start() {
if let Err(e) = blk_daemon.start(listener) {
error!(
"Failed to start daemon for vhost-user-block with error: {:?}\n",
e