source: mainline/uspace/lib/c/generic/irq.c@ 39330200

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 39330200 was b7fd2a0, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 7 years ago

Use errno_t in all uspace and kernel code.

Change type of every variable, parameter and return value that holds an
<errno.h> constant to either errno_t (the usual case), or sys_errno_t
(some places in kernel). This is for the purpose of self-documentation,
as well as for type-checking with a bit of type definition hackery.

Although this is a massive commit, it is a simple text replacement, and thus
is very easy to verify. Simply do the following:

`
git checkout <this commit's hash>
git reset HEAD
git add .
tools/srepl '\berrno_t\b' int
git add .
tools/srepl '\bsys_errno_t\b' sysarg_t
git reset
git diff
`

While this doesn't ensure that the replacements are correct, it does ensure
that the commit doesn't do anything except those replacements. Since errno_t
is typedef'd to int in the usual case (and sys_errno_t to sysarg_t), even if
incorrect, this commit cannot change behavior.
  • Property mode set to 100644
File size: 2.5 KB
Line 
1/*
2 * Copyright (c) 2014 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 libc
30 * @{
31 */
32/** @file
33 */
34
35#include <ipc/irq.h>
36#include <libc.h>
37#include <stdlib.h>
38#include <stddef.h>
39#include <macros.h>
40
41static irq_cmd_t default_cmds[] = {
42 {
43 .cmd = CMD_ACCEPT
44 }
45};
46
47static const irq_code_t default_ucode = {
48 0,
49 NULL,
50 ARRAY_SIZE(default_cmds),
51 default_cmds
52};
53
54/** Subscribe to IRQ notification.
55 *
56 * @param inr IRQ number.
57 * @param method Use this method for notifying me.
58 * @param ucode Top-half pseudocode handler.
59 *
60 * @param[out] out_handle IRQ capability handle returned by the kernel.
61 *
62 * @return Error code returned by the kernel.
63 *
64 */
65errno_t ipc_irq_subscribe(int inr, sysarg_t method, const irq_code_t *ucode,
66 cap_handle_t *out_handle)
67{
68 if (ucode == NULL)
69 ucode = &default_ucode;
70
71 return (errno_t) __SYSCALL4(SYS_IPC_IRQ_SUBSCRIBE, inr, method, (sysarg_t) ucode,
72 (sysarg_t) out_handle);
73}
74
75/** Unsubscribe from IRQ notification.
76 *
77 * @param cap IRQ capability handle.
78 *
79 * @return Value returned by the kernel.
80 *
81 */
82errno_t ipc_irq_unsubscribe(cap_handle_t cap)
83{
84 return (errno_t) __SYSCALL1(SYS_IPC_IRQ_UNSUBSCRIBE, cap);
85}
86
87/** @}
88 */
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