source: mainline/uspace/lib/c/include/ipc/common.h@ 01c3bb4

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 01c3bb4 was 01c3bb4, checked in by Jakub Jermar <jakub@…>, 8 years ago

Convert call-handling syscalls to capabilities

This commit modifies the behavior of sys_ipc_wait_for_call() to return a
capability handle for requests. This capability handle can be used
either by sys_ipc_answer*() to answer the call or by sys_ipc_forward*()
to forward it further along. Answering or forwarding the call results in
destruction of the respective capability. For requests and
notifications, sys_ipc_wait_for_call() returns CAP_NIL and sets call
flags accordingly.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 * Copyright (c) 2011 Martin Decky
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libcipc
30 * @{
31 */
32/** @file
33 */
34
35#ifndef LIBC_IPC_COMMON_H_
36#define LIBC_IPC_COMMON_H_
37
38#include <abi/ipc/ipc.h>
39#include <atomic.h>
40#include <abi/proc/task.h>
41#include <futex.h>
42#include <abi/cap.h>
43
44#define IPC_FLAG_BLOCKING 0x01
45
46struct async_call;
47
48typedef struct {
49 sysarg_t args[IPC_CALL_LEN];
50 task_id_t in_task_id;
51 sysarg_t in_phone_hash;
52 unsigned flags;
53 struct async_call *label;
54} ipc_call_t;
55
56typedef cap_handle_t ipc_callid_t;
57
58extern futex_t async_futex;
59
60#endif
61
62/** @}
63 */
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