feat: xwayland rootful and rootless (both broken)

src/wayland/drm.rs

@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
+// Re-export only the actual code, and then only use this re-export
+// The `generated` module below is just some boilerplate to properly isolate stuff
+// and avoid exposing internal details.
+//
+// You can use all the types from my_protocol as if they went from `wayland_client::protocol`.
+pub use generated::wl_drm;
+
+#[allow(non_upper_case_globals, non_camel_case_types)]
+mod generated {
+	use smithay::reexports::wayland_server::{self, protocol::*};
+
+	pub mod __interfaces {
+		use smithay::reexports::wayland_server::protocol::__interfaces::*;
+		wayland_scanner::generate_interfaces!("src/wayland/wayland-drm.xml");
+	}
+	use self::__interfaces::*;
+
+	wayland_scanner::generate_server_code!("src/wayland/wayland-drm.xml");
+}
+
+use super::state::WaylandState;
+use smithay::{
+	backend::allocator::{
+		dmabuf::{Dmabuf, DmabufFlags},
+		Fourcc, Modifier,
+	},
+	reexports::wayland_server::{
+		Client, DataInit, Dispatch, DisplayHandle, GlobalDispatch, New, Resource,
+	},
+};
+use std::convert::TryFrom;
+
+impl GlobalDispatch<wl_drm::WlDrm, (), WaylandState> for WaylandState {
+	fn bind(
+		state: &mut WaylandState,
+		_dh: &DisplayHandle,
+		_client: &Client,
+		resource: New<wl_drm::WlDrm>,
+		_global_data: &(),
+		data_init: &mut DataInit<'_, WaylandState>,
+	) {
+		let drm_instance = data_init.init(resource, ());
+
+		drm_instance.device("/dev/dri/renderD128".to_string());
+		if drm_instance.version() >= 2 {
+			drm_instance.capabilities(wl_drm::Capability::Prime as u32);
+		}
+		for format in state.drm_formats.iter() {
+			if let Ok(converted) = wl_drm::Format::try_from(*format as u32) {
+				drm_instance.format(converted as u32);
+			}
+		}
+	}
+
+	fn can_view(_client: Client, _global_dataa: &()) -> bool {
+		true
+	}
+}
+
+impl Dispatch<wl_drm::WlDrm, (), WaylandState> for WaylandState {
+	fn request(
+		state: &mut WaylandState,
+		_client: &Client,
+		drm: &wl_drm::WlDrm,
+		request: wl_drm::Request,
+		_data: &(),
+		_dh: &DisplayHandle,
+		data_init: &mut DataInit<'_, WaylandState>,
+	) {
+		match request {
+			wl_drm::Request::Authenticate { .. } => drm.authenticated(),
+			wl_drm::Request::CreateBuffer { .. } => drm.post_error(
+				wl_drm::Error::InvalidName,
+				String::from("Flink handles are unsupported, use PRIME"),
+			),
+			wl_drm::Request::CreatePlanarBuffer { .. } => drm.post_error(
+				wl_drm::Error::InvalidName,
+				String::from("Flink handles are unsupported, use PRIME"),
+			),
+			wl_drm::Request::CreatePrimeBuffer {
+				id,
+				name,
+				width,
+				height,
+				format,
+				offset0,
+				stride0,
+				..
+			} => {
+				let format = match Fourcc::try_from(format) {
+					Ok(format) => {
+						if !state.drm_formats.contains(&format) {
+							drm.post_error(
+								wl_drm::Error::InvalidFormat,
+								String::from("Format not advertised by wl_drm"),
+							);
+							return;
+						}
+						format
+					}
+					Err(_) => {
+						drm.post_error(
+							wl_drm::Error::InvalidFormat,
+							String::from("Format unknown / not advertised by wl_drm"),
+						);
+						return;
+					}
+				};
+
+				if width < 1 || height < 1 {
+					drm.post_error(
+						wl_drm::Error::InvalidFormat,
+						String::from("width or height not positive"),
+					);
+					return;
+				}
+
+				let mut dma = Dmabuf::builder((width, height), format, DmabufFlags::empty());
+				dma.add_plane(name, 0, offset0 as u32, stride0 as u32, Modifier::Invalid);
+				match dma.build() {
+					Some(dmabuf) => {
+						state.dmabuf_tx.send((dmabuf.clone(), None)).unwrap();
+						data_init.init(id, dmabuf);
+					}
+					None => {
+						// Buffer import failed. The protocol documentation heavily implies killing the
+						// client is the right thing to do here.
+						drm.post_error(
+							wl_drm::Error::InvalidName,
+							"dmabuf global was destroyed on server",
+						);
+					}
+				}
+			}
+		}
+	}
+}