Initial implementation of IPC via UNIX domain sockets

include/i3.h

@@ -22,6 +22,7 @@
 
 #define NUM_ATOMS 17
 
+extern xcb_connection_t *global_conn;
 extern char **start_argv;
 extern Display *xkbdpy;
 extern TAILQ_HEAD(bindings_head, Binding) bindings;

include/i3/ipc.h

@@ -0,0 +1,24 @@
+/*
+ * vim:ts=8:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ *
+ * © 2009 Michael Stapelberg and contributors
+ *
+ * See file LICENSE for license information.
+ *
+ * This public header defines the different constants and message types to use
+ * for the IPC interface to i3 (see docs/ipc for more information).
+ *
+ */
+
+#ifndef _I3_IPC_H
+#define _I3_IPC_H
+
+/** Never change this, only on major IPC breakage (don’t do that) */
+#define I3_IPC_MAGIC 			"i3-ipc"
+
+/** The payload of the message will be interpreted as a command */
+#define I3_IPC_MESSAGE_TYPE_COMMAND	0
+
+#endif

include/ipc.h

@@ -0,0 +1,23 @@
+/*
+ * vim:ts=8:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ *
+ * © 2009 Michael Stapelberg and contributors
+ *
+ * See file LICENSE for license information.
+ *
+ */
+
+#ifndef _IPC_H
+#define _IPC_H
+
+#include <ev.h>
+
+#include "i3/ipc.h"
+
+void ipc_new_client(EV_P_ struct ev_io *w, int revents);
+
+int ipc_create_socket(const char *filename);
+
+#endif