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/*
* Copyright (C) 2013 Kay Sievers
* Copyright (C) 2013 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Copyright (C) 2013 Daniel Mack <daniel@zonque.org>
* Copyright (C) 2013 Linux Foundation
*
* 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_MESSAGE_H
#define __KDBUS_MESSAGE_H
#include "util.h"
#include "metadata.h"
/**
* struct kdbus_kmsg - internal message handling data
* @seq: Domain-global message sequence number
* @notify_type: Short-cut for faster lookup
* @notify_old_id: Short-cut for faster lookup
* @notify_new_id: Short-cut for faster lookup
* @notify_name: Short-cut for faster lookup
* @dst_name: Short-cut to msg for faster lookup
* @dst_name_id: Short-cut to msg for faster lookup
* @bloom_filter: Bloom filter to match message properties
* @bloom_generation: Generation of bloom element set
* @fds: Array of file descriptors to pass
* @fds_count: Number of file descriptors to pass
* @meta: Appended SCM-like metadata of the sending process
* @vecs_size: Size of PAYLOAD data
* @vecs_count: Number of PAYLOAD vectors
* @memfds_count: Number of memfds to pass
* @queue_entry: List of kernel-generated notifications
* @msg: Message from or to userspace
*/
struct kdbus_kmsg {
u64 seq;
u64 notify_type;
u64 notify_old_id;
u64 notify_new_id;
const char *notify_name;
const char *dst_name;
u64 dst_name_id;
const struct kdbus_bloom_filter *bloom_filter;
u64 bloom_generation;
const int *fds;
unsigned int fds_count;
struct kdbus_meta *meta;
size_t vecs_size;
unsigned int vecs_count;
unsigned int memfds_count;
struct list_head queue_entry;
/* variable size, must be the last member */
struct kdbus_msg msg;
};
struct kdbus_ep;
struct kdbus_conn;
int kdbus_kmsg_new(size_t extra_size, struct kdbus_kmsg **kmsg);
int kdbus_kmsg_new_from_user(struct kdbus_conn *conn,
const struct kdbus_msg __user *msg,
struct kdbus_kmsg **kmsg);
void kdbus_kmsg_free(struct kdbus_kmsg *kmsg);
#endif
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