Subversion Repositories HelenOS-historic

Rev

Rev 1278 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1174 jermar 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
/**
1264 jermar 30
 * @file    cap.h
31
 * @brief   Capabilities definitions.
32
 *
33
 * Capabilities represent virtual rights that entitle their
34
 * holder to perform certain security sensitive tasks.
35
 *
1174 jermar 36
 * Each task can have arbitrary combination of the capabilities
37
 * defined in this file. Therefore, they are required to be powers
38
 * of two.
39
 */
40
 
41
#ifndef __CAP_H__
42
#define __CAP_H__
43
 
1297 jermar 44
#include <syscall/sysarg64.h>
1174 jermar 45
#include <arch/types.h>
46
#include <typedefs.h>
47
 
48
/**
49
 * CAP_CAP allows its holder to grant/revoke arbitrary
50
 * privilege to/from other tasks.
51
 */
52
#define CAP_CAP         (1<<0)
53
 
54
/**
55
 * CAP_MEM_MANAGER allows its holder to map physical memory
56
 * to other tasks.
57
 */
58
#define CAP_MEM_MANAGER     (1<<1)
59
 
60
/**
61
 * CAP_IO_MANAGER allows its holder to access I/O space
62
 * to other tasks.
63
 */
64
#define CAP_IO_MANAGER      (1<<2)
65
 
1212 palkovsky 66
/**
1297 jermar 67
 * CAP_PREEMPT_CONTROL allows its holder to disable/enable preemption.
1212 palkovsky 68
 */
1297 jermar 69
#define CAP_PREEMPT_CONTROL (1<<3)
1212 palkovsky 70
 
1297 jermar 71
/**
72
 * CAP_IRQ_REG entitles its holder to register IRQ handlers.
73
 */
74
#define CAP_IRQ_REG     (1<<4) 
75
 
1174 jermar 76
typedef __u32 cap_t;
77
 
78
extern void cap_set(task_t *t, cap_t caps);
79
extern cap_t cap_get(task_t *t);
80
 
1297 jermar 81
extern __native sys_cap_grant(sysarg64_t *uspace_taskid_arg, cap_t caps);
82
extern __native sys_cap_revoke(sysarg64_t *uspace_taskid_arg, cap_t caps);
83
 
1174 jermar 84
#endif