Add DRM node abstraction

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";