cyber: initial releasev42.1337

1 files changed, 103 insertions, 0 deletions

diff --git a/src/cyber_device.c b/src/cyber_device.c
new file mode 100644
index 0000000..67b9695
--- /dev/null
+++ b/src/cyber_device.c
@@ -0,0 +1,103 @@
+/*
+ * 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>
+
+struct cyber_device device = {};
+
+/**
+ * Initialize the sysfs CYBER device class
+ *
+ * @return zero on success, non-zero otherwise
+ */
+int cyber_device_init_device_class(void);
+
+/**
+ * Shutdown the sysfs CYBER device class
+ */
+void cyber_device_shutdown_device_class(void);
+
+/**
+ * Initialize the CYBER character device
+ *
+ * @return zero on success, non-zero otherwise
+ */
+int cyber_device_init_character_device(void);
+
+/**
+ * Shutdown the CYBER character device
+ */
+void cyber_device_shutdown_character_device(void);
+
+/**
+ * Initialize the CYBER kernel device
+ *
+ * @return zero on success, non-zero otherwise
+ */
+int cyber_device_init_kernel_device(void);
+
+/**
+ * Shutdown the CYBER kernel device
+ */
+void cyber_device_shutdown_kernel_device(void);
+
+int cyber_device_init(void)
+{
+	int error = 0;
+
+	printk(KERN_INFO DEV_NAME ": Initializing CYBER device\n");
+
+	if((error = cyber_device_init_character_device()))
+	{
+		return error;
+	}
+
+	if((error = cyber_device_init_device_class()))
+	{
+		cyber_device_shutdown_character_device();
+		return error;
+	}
+
+	if((error = cyber_device_init_kernel_device()))
+	{
+		cyber_device_shutdown_character_device();
+		cyber_device_shutdown_device_class();
+		return error;
+	}
+
+	printk(KERN_INFO DEV_NAME ": New CYBER device with major %d minor %d\n", MAJOR(device.number), MINOR(device.number));
+	return error;
+}
+
+void cyber_device_shutdown(void)
+{
+	printk(KERN_INFO DEV_NAME ": Shutting down CYBER device\n");
+	cyber_device_shutdown_kernel_device();
+	cyber_device_shutdown_device_class();
+	cyber_device_shutdown_character_device();
+}
+
+void cyber_device_release(struct device * device)
+{
+	printk(KERN_INFO DEV_NAME ": Closing kernel CYBER device\n");
+}