From 75e9a0a84d2a484c83c206737d08e0e4709d7c52 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Thu, 11 Sep 2014 18:57:24 +0200 Subject: kdbus: add connection, queue handling and message validation code This patch adds code to create and destroy connections, to validate incoming messages and to maintain the queue of messages that are associated with a connection. Note that connection and queue have a 1:1 relation, the code is only split in two parts for cleaner separation and better readability. Signed-off-by: Daniel Mack Signed-off-by: David Herrmann Signed-off-by: Djalal Harouni Signed-off-by: Greg Kroah-Hartman Signed-off-by: Paul Osmialowski --- ipc/kdbus/reply.h | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 ipc/kdbus/reply.h (limited to 'ipc/kdbus/reply.h') diff --git a/ipc/kdbus/reply.h b/ipc/kdbus/reply.h new file mode 100644 index 000000000000..68d52321a917 --- /dev/null +++ b/ipc/kdbus/reply.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2013-2015 Kay Sievers + * Copyright (C) 2013-2015 Greg Kroah-Hartman + * Copyright (C) 2013-2015 Daniel Mack + * Copyright (C) 2013-2015 David Herrmann + * Copyright (C) 2013-2015 Linux Foundation + * Copyright (C) 2014-2015 Djalal Harouni + * + * kdbus is free software; you can redistribute it and/or modify it under + * the terms of the GNU Lesser General Public License as published by the + * Free Software Foundation; either version 2.1 of the License, or (at + * your option) any later version. + */ + +#ifndef __KDBUS_REPLY_H +#define __KDBUS_REPLY_H + +/** + * struct kdbus_reply - an entry of kdbus_conn's list of replies + * @kref: Ref-count of this object + * @entry: The entry of the connection's reply_list + * @reply_src: The connection the reply will be sent from + * @reply_dst: The connection the reply will be sent to + * @queue_entry: The queue entry item that is prepared by the replying + * connection + * @deadline_ns: The deadline of the reply, in nanoseconds + * @cookie: The cookie of the requesting message + * @name_id: ID of the well-known name the original msg was sent to + * @sync: The reply block is waiting for synchronous I/O + * @waiting: The condition to synchronously wait for + * @interrupted: The sync reply was left in an interrupted state + * @err: The error code for the synchronous reply + */ +struct kdbus_reply { + struct kref kref; + struct list_head entry; + struct kdbus_conn *reply_src; + struct kdbus_conn *reply_dst; + struct kdbus_queue_entry *queue_entry; + u64 deadline_ns; + u64 cookie; + u64 name_id; + bool sync:1; + bool waiting:1; + bool interrupted:1; + int err; +}; + +struct kdbus_reply *kdbus_reply_new(struct kdbus_conn *reply_src, + struct kdbus_conn *reply_dst, + const struct kdbus_msg *msg, + struct kdbus_name_entry *name_entry, + bool sync); + +struct kdbus_reply *kdbus_reply_ref(struct kdbus_reply *r); +struct kdbus_reply *kdbus_reply_unref(struct kdbus_reply *r); + +void kdbus_reply_link(struct kdbus_reply *r); +void kdbus_reply_unlink(struct kdbus_reply *r); + +struct kdbus_reply *kdbus_reply_find(struct kdbus_conn *replying, + struct kdbus_conn *reply_dst, + u64 cookie); + +void kdbus_sync_reply_wakeup(struct kdbus_reply *reply, int err); +void kdbus_reply_list_scan_work(struct work_struct *work); + +#endif /* __KDBUS_REPLY_H */ -- cgit v1.2.3