[BUILD] rewrite CMake build system to track changes of source files

This change restructures the source code directories, separates shared
form non-shared application code and adds CMake dependencies. These
dependencies allow the tracking of changes and trigger a rebuild of
those build targets where changed files are involved.

WARNING: Note that the support of the DNBD3_SERVER_AFL build option is
not supported yet. Thus, the option should be never turned on.

1 files changed, 88 insertions, 0 deletions

diff --git a/src/kernel/dnbd3_main.h b/src/kernel/dnbd3_main.h
new file mode 100644
index 0000000..124426b
--- /dev/null
+++ b/src/kernel/dnbd3_main.h
@@ -0,0 +1,88 @@
+/*
+ * This file is part of the Distributed Network Block Device 3
+ *
+ * Copyright(c) 2011-2012 Johann Latocha <johann@latocha.de>
+ *
+ * This file may be licensed under the terms of of the
+ * GNU General Public License Version 2 (the ``GPL'').
+ *
+ * Software distributed under the License is distributed
+ * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
+ * express or implied. See the GPL for the specific language
+ * governing rights and limitations.
+ *
+ * You should have received a copy of the GPL along with this
+ * program. If not, go to http://www.gnu.org/licenses/gpl.html
+ * or write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef DNBD_H_
+#define DNBD_H_
+
+#include <linux/version.h>
+#include <linux/kthread.h>
+#include <linux/module.h>
+#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
+#include <net/sock.h>
+
+#include <dnbd3/config.h>
+#include <dnbd3/types.h>
+#include <dnbd3/shared/serialize.h>
+
+extern int major;
+
+typedef struct
+{
+	dnbd3_host_t host;
+	unsigned long rtts[4];		// Last four round trip time measurements in µs
+	uint16_t protocol_version;	// dnbd3 protocol version of this server
+	uint8_t failures;			// How many times the server was unreachable
+} dnbd3_server_t;
+
+typedef struct
+{
+	// block
+	struct gendisk *disk;
+	struct blk_mq_tag_set tag_set;
+	struct request_queue *queue;
+	spinlock_t blk_lock;
+
+	// sysfs
+	struct kobject kobj;
+
+	// network
+	char *imgname;
+	struct socket *sock;
+	dnbd3_server_t cur_server, initial_server;
+	unsigned long cur_rtt;
+	serialized_buffer_t payload_buffer;
+	dnbd3_server_t alt_servers[NUMBER_SERVERS]; // array of alt servers
+	int new_servers_num;	// number of new alt servers that are waiting to be copied to above array
+	dnbd3_server_entry_t new_servers[NUMBER_SERVERS]; // pending new alt servers
+	uint8_t discover, panic, disconnecting, update_available, panic_count;
+	uint8_t use_server_provided_alts;
+	uint16_t rid;
+	uint32_t heartbeat_count;
+	uint64_t reported_size;
+	// server switch
+	struct socket *better_sock;
+
+	// process
+	struct task_struct * thread_send;
+	struct task_struct * thread_receive;
+	struct task_struct *thread_discover;
+	struct timer_list hb_timer;
+	wait_queue_head_t process_queue_send;
+	wait_queue_head_t process_queue_receive;
+	wait_queue_head_t process_queue_discover;
+	struct list_head request_queue_send;
+	struct list_head request_queue_receive;
+
+} dnbd3_device_t;
+
+extern inline struct device *dnbd3_device_to_dev(dnbd3_device_t *dev);
+
+#endif /* DNBD_H_ */