diff options
Diffstat (limited to 'src/linux.rs')
-rw-r--r-- | src/linux.rs | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/linux.rs b/src/linux.rs index e480a4c..e95f372 100644 --- a/src/linux.rs +++ b/src/linux.rs @@ -792,6 +792,70 @@ fn create_wayland_device( }) } +#[cfg(any(feature = "video-decoder", feature = "video-encoder"))] +fn create_video_device( + cfg: &Config, + typ: devices::virtio::VideoDeviceType, + resource_bridge: virtio::resource_bridge::ResourceRequestSocket, +) -> DeviceResult { + let jail = match simple_jail(&cfg, "video_device")? { + Some(mut jail) => { + match typ { + devices::virtio::VideoDeviceType::Decoder => { + add_crosvm_user_to_jail(&mut jail, "video-decoder")? + } + devices::virtio::VideoDeviceType::Encoder => { + add_crosvm_user_to_jail(&mut jail, "video-encoder")? + } + }; + + // Create a tmpfs in the device's root directory so that we can bind mount files. + jail.mount_with_data( + Path::new("none"), + Path::new("/"), + "tmpfs", + (libc::MS_NOSUID | libc::MS_NODEV | libc::MS_NOEXEC) as usize, + "size=67108864", + )?; + + // Render node for libvda. + let dev_dri_path = Path::new("/dev/dri/renderD128"); + jail.mount_bind(dev_dri_path, dev_dri_path, false)?; + + // Device nodes required by libchrome which establishes Mojo connection in libvda. + let dev_urandom_path = Path::new("/dev/urandom"); + jail.mount_bind(dev_urandom_path, dev_urandom_path, false)?; + let system_bus_socket_path = Path::new("/run/dbus/system_bus_socket"); + jail.mount_bind(system_bus_socket_path, system_bus_socket_path, true)?; + + Some(jail) + } + None => None, + }; + + Ok(VirtioDeviceStub { + dev: Box::new(devices::virtio::VideoDevice::new( + typ, + Some(resource_bridge), + )), + jail, + }) +} + +#[cfg(any(feature = "video-decoder", feature = "video-encoder"))] +fn register_video_device( + devs: &mut Vec<VirtioDeviceStub>, + resource_bridges: &mut Vec<virtio::resource_bridge::ResourceResponseSocket>, + cfg: &Config, + typ: devices::virtio::VideoDeviceType, +) -> std::result::Result<(), Error> { + let (video_socket, gpu_socket) = + virtio::resource_bridge::pair().map_err(Error::CreateSocket)?; + resource_bridges.push(gpu_socket); + devs.push(create_video_device(cfg, typ, video_socket)?); + Ok(()) +} + fn create_vhost_vsock_device(cfg: &Config, cid: u64, mem: &GuestMemory) -> DeviceResult { let dev = virtio::vhost::Vsock::new(cid, mem).map_err(Error::VhostVsockDeviceNew)?; @@ -1088,6 +1152,30 @@ fn create_virtio_devices( )?); } + #[cfg(feature = "video-decoder")] + { + if cfg.video_dec { + register_video_device( + &mut devs, + &mut resource_bridges, + cfg, + devices::virtio::VideoDeviceType::Decoder, + )?; + } + } + + #[cfg(feature = "video-encoder")] + { + if cfg.video_enc { + register_video_device( + &mut devs, + &mut resource_bridges, + cfg, + devices::virtio::VideoDeviceType::Encoder, + )?; + } + } + #[cfg(feature = "gpu")] { if let Some(gpu_parameters) = &cfg.gpu_parameters { |