feat: add kernel module

.gitignore

@@ -22,7 +22,6 @@ modules.order
 CMakeCache.txt
 CMakeFiles/
 cmake_install.cmake
-Makefile
 
 # Binaries
 daemon/daemon

kernel/Makefile

+obj-m += kmod.o 
+
+PWD := $(CURDIR) 
+
+all: 
+	$(MAKE) -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules 
+
+clean: 
+	$(MAKE) -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
\ No newline at end of file

kernel/kmod.c

+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/printk.h>
+
+static int __init lkm_init(void)
+{
+    pr_info("Hello world.\n");
+    return 0;
+}
+
+static void __exit lkm_exit(void)
+{
+    pr_info("Goodbye world.\n");
+}
+
+module_init(lkm_init);
+module_exit(lkm_exit);
+MODULE_LICENSE("GPL");
\ No newline at end of file