source: mainline/uspace/lib/c/generic/cap.c@ 8d2dd7f2

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 8d2dd7f2 was 8d2dd7f2, checked in by Jakub Jermar <jakub@…>, 8 years ago

Reduce the number of files that include <sys/types.h>

  • Property mode set to 100644
File size: 2.6 KB
Line 
1/*
2 * Copyright (c) 2006 Jakub Jermar
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/**
33 * @file cap.c
34 * @brief Functions to grant/revoke capabilities to/from a task.
35 */
36
37#include <cap.h>
38#include <task.h>
39#include <libc.h>
40#include <libarch/types.h>
41
42/** Grant capabilities to a task.
43 *
44 * @param id Destination task ID.
45 * @param caps Capabilities to grant.
46 *
47 * @return Zero on success or a value from @ref errno.h on failure.
48 *
49 */
50int cap_grant(task_id_t id, unsigned int caps)
51{
52#ifdef __32_BITS__
53 sysarg64_t arg = (sysarg64_t) id;
54 return __SYSCALL2(SYS_CAP_GRANT, (sysarg_t) &arg, (sysarg_t) caps);
55#endif
56
57#ifdef __64_BITS__
58 return __SYSCALL2(SYS_CAP_GRANT, (sysarg_t) id, (sysarg_t) caps);
59#endif
60}
61
62/** Revoke capabilities from a task.
63 *
64 * @param id Destination task ID.
65 * @param caps Capabilities to revoke.
66 *
67 * @return Zero on success or a value from @ref errno.h on failure.
68 *
69 */
70int cap_revoke(task_id_t id, unsigned int caps)
71{
72#ifdef __32_BITS__
73 sysarg64_t arg = (sysarg64_t) id;
74 return __SYSCALL2(SYS_CAP_REVOKE, (sysarg_t) &arg, (sysarg_t) caps);
75#endif
76
77#ifdef __64_BITS__
78 return __SYSCALL2(SYS_CAP_REVOKE, (sysarg_t) id, (sysarg_t) caps);
79#endif
80}
81
82/** @}
83 */
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