Add support for client/server connection over unix domain sockets

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/init.c b/init.c
index 1cf8e59..486b743 100644
--- a/init.c
+++ b/init.c
@@ -188,7 +188,7 @@
 	},
 	{
 		.name		= (char *) "server",
-		.has_arg	= no_argument,
+		.has_arg	= optional_argument,
 		.val		= 'S',
 	},
 	{	.name		= (char *) "daemonize",
@@ -1410,6 +1410,8 @@
 				exit_val = 1;
 				break;
 			}
+			if (optarg)
+				fio_server_add_arg(optarg);
 			is_backend = 1;
 			backend = 1;
 			break;