1 files changed, 77 insertions, 0 deletions
diff --git a/src/cyber_device_device_class.c b/src/cyber_device_device_class.c
new file mode 100644
index 0000000..c0d108b
--- /dev/null
+++ b/src/cyber_device_device_class.c
@@ -0,0 +1,77 @@
+/*
+ * cyber - Add CYBER to your system
+ * Copyright (C) 2017 Felix Morgner
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cyber.h"
+#include "cyber_device.h"
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+
+extern struct cyber_device device;
+
+static ssize_t cyber_device_show_attribute(struct class * class, struct class_attribute * attribute,  char __user * buffer)
+{
+	char const * const name = attribute->attr.name;
+
+	if(!strcmp(name, "available"))
+	{
+		return sprintf(buffer, "infinite\n");
+	}
+	else if(!strcmp(name, "storage_technology"))
+	{
+		return sprintf(buffer, "condensed di-hydrogen-monoxide\n");
+	}
+
+	return -EINVAL;
+}
+
+CLASS_ATTR(available, 0444, cyber_device_show_attribute, NULL);
+CLASS_ATTR(storage_technology, 0444, cyber_device_show_attribute, NULL);
+
+static int cyber_device_handle_uevent(struct device * kernelDevice, struct kobj_uevent_env * environment)
+{
+	add_uevent_var(environment, "DEVMODE=%#o", 0666);
+	return 0;
+}
+
+int cyber_device_init_device_class(void)
+{
+	int error = 0;
+
+	device.class.name = CLS_NAME;
+	device.class.owner = THIS_MODULE;
+	device.class.dev_uevent = cyber_device_handle_uevent;
+	if((error = class_register(&device.class)))
+	{
+		printk(KERN_ALERT DEV_NAME ": Failed to register CYBER device class!\n");
+	}
+
+	if((error = class_create_file(&device.class, &class_attr_available)) ||
+	   (error = class_create_file(&device.class, &class_attr_storage_technology)))
+	{
+		printk(KERN_ALERT DEV_NAME ": Failed to register sysfs CYBER attributes!\n");
+	}
+
+	return error;
+}
+
+void cyber_device_shutdown_device_class(void)
+{
+	class_unregister(&device.class);
+}