2: module working

samples/rust/Kconfig

@@ -10,6 +10,16 @@ menuconfig SAMPLES_RUST
 
 if SAMPLES_RUST
 
+config SAMPLE_RUST_VDEV
+	tristate "Virtual Device"
+	help
+	  This option builds the Rust virtual device module sample.
+
+	  To compile this as a module, choose M here:
+	  the module will be called rust_vdev.
+
+	  If unsure, say N.
+
 config SAMPLE_RUST_MINIMAL
 	tristate "Minimal"
 	help

samples/rust/Makefile

@@ -15,5 +15,6 @@ obj-$(CONFIG_SAMPLE_RUST_NETFILTER)		+= rust_netfilter.o
 obj-$(CONFIG_SAMPLE_RUST_ECHO_SERVER)		+= rust_echo_server.o
 obj-$(CONFIG_SAMPLE_RUST_FS)			+= rust_fs.o
 obj-$(CONFIG_SAMPLE_RUST_SELFTESTS)		+= rust_selftests.o
+obj-$(CONFIG_SAMPLE_RUST_VDEV) 			+= rust_vdev.o
 
 subdir-$(CONFIG_SAMPLE_RUST_HOSTPROGS)		+= hostprogs

samples/rust/rust_vdev.rs

@@ -0,0 +1,20 @@
+//! Virtual Device Module
+use kernel::prelude::*;
+
+module! {
+    type: VDev,
+    name: b"vdev",
+    license: b"GPL",
+}
+
+struct VDev;
+
+impl kernel::Module for VDev {
+    fn init(_name: &'static CStr, _module: &'static ThisModule) -> Result<Self> {
+        // Print a banner to make sure our moudle is working
+        pr_info!("------------------------\n");
+        pr_info!("starting virtual device!\n");
+        pr_info!("------------------------\n");
+        Ok(VDev)
+    }
+}