Add DRM node abstraction (#202)

.github/workflows/ci.yml

@@ -75,7 +75,7 @@ jobs:
           command: update
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.65.0
+          toolchain: 1.66.0
           profile: minimal
           components: clippy
           default: true
@@ -88,12 +88,12 @@ jobs:
           path: |
             ~/.cargo/registry
             ~/.cargo/git
-          key: ${{ runner.os }}-cargo-rust_1.65.0-${{ hashFiles('**/Cargo.toml') }}
+          key: ${{ runner.os }}-cargo-rust_1.66.0-${{ hashFiles('**/Cargo.toml') }}
       - name: Build cache
         uses: actions/cache@v3
         with:
           path: target
-          key: ${{ runner.os }}-build-rust_1.65.0-check-${{ hashFiles('**/Cargo.toml') }}
+          key: ${{ runner.os }}-build-rust_1.66.0-check-${{ hashFiles('**/Cargo.toml') }}
       - name: Clippy
         uses: actions-rs/clippy-check@v1
         with:

Cargo.toml

@@ -6,7 +6,7 @@ version = "0.12.0"
 license = "MIT"
 authors = ["Tyler Slabinski <[email protected]>", "Victoria Brekenfeld <[email protected]>"]
 exclude = [".gitignore", ".github"]
-rust-version = "1.65"
+rust-version = "1.66"
 edition = "2021"
 
 [dependencies]

drm-ffi/Cargo.toml

@@ -5,7 +5,7 @@ repository = "https://github.com/Smithay/drm-rs"
 version = "0.8.0"
 license = "MIT"
 authors = ["Tyler Slabinski <[email protected]>"]
-rust-version = "1.65"
+rust-version = "1.66"
 edition = "2021"
 
 [dependencies]

drm-ffi/drm-sys/Cargo.toml

@@ -6,7 +6,7 @@ version = "0.7.0"
 authors = ["Tyler Slabinski <[email protected]>"]
 license = "MIT"
 build = "build.rs"
-rust-version = "1.65"
+rust-version = "1.66"
 edition = "2021"
 
 [features]

drm-ffi/src/mode.rs

@@ -396,7 +396,7 @@ pub fn get_connector(
         } else {
             &tmp_mode as *const _ as _
         },
-        count_modes: if force_probe { 0 } else { 1 },
+        count_modes: u32::from(!force_probe),
         ..Default::default()
     };
 
@@ -427,13 +427,7 @@ pub fn get_connector(
             prop_values_ptr: map_ptr!(&prop_values),
             count_modes: match &modes {
                 Some(b) => b.capacity() as _,
-                None => {
-                    if force_probe {
-                        0
-                    } else {
-                        1
-                    }
-                }
+                None => u32::from(!force_probe),
             },
             count_props: map_len!(&props),
             count_encoders: map_len!(&encoders),

src/lib.rs

@@ -32,6 +32,7 @@ pub(crate) mod util;
 
 pub mod buffer;
 pub mod control;
+pub mod node;
 
 use std::ffi::{OsStr, OsString};
 use std::time::Duration;

src/node/constants.rs

@@ -0,0 +1,45 @@
+//! OS-Specific DRM constants.
+
+/// DRM major value.
+#[cfg(target_os = "dragonfly")]
+pub const DRM_MAJOR: u32 = 145;
+
+/// DRM major value.
+#[cfg(target_os = "netbsd")]
+pub const DRM_MAJOR: u32 = 34;
+
+/// DRM major value.
+#[cfg(all(target_os = "openbsd", target_arch = "x86"))]
+pub const DRM_MAJOR: u32 = 88;
+
+/// DRM major value.
+#[cfg(all(target_os = "openbsd", not(target_arch = "x86")))]
+pub const DRM_MAJOR: u32 = 87;
+
+/// DRM major value.
+#[cfg(not(any(target_os = "dragonfly", target_os = "netbsd", target_os = "openbsd")))]
+pub const DRM_MAJOR: u32 = 226;
+
+/// Primary DRM node prefix.
+#[cfg(not(target_os = "openbsd"))]
+pub const PRIMARY_NAME: &str = "card";
+
+/// Primary DRM node prefix.
+#[cfg(target_os = "openbsd")]
+pub const PRIMARY_NAME: &str = "drm";
+
+/// Control DRM node prefix.
+#[cfg(not(target_os = "openbsd"))]
+pub const CONTROL_NAME: &str = "controlD";
+
+/// Control DRM node prefix.
+#[cfg(target_os = "openbsd")]
+pub const CONTROL_NAME: &str = "drmC";
+
+/// Render DRM node prefix.
+#[cfg(not(target_os = "openbsd"))]
+pub const RENDER_NAME: &str = "renderD";
+
+/// Render DRM node prefix.
+#[cfg(target_os = "openbsd")]
+pub const RENDER_NAME: &str = "drmR";