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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** |
29 | /** |
| - | 30 | * @file cap.h |
|
| 30 | * Capabilities definitions. |
31 | * @brief Capabilities definitions. |
| - | 32 | * |
|
| - | 33 | * Capabilities represent virtual rights that entitle their |
|
| - | 34 | * holder to perform certain security sensitive tasks. |
|
| - | 35 | * |
|
| 31 | * Each task can have arbitrary combination of the capabilities |
36 | * Each task can have arbitrary combination of the capabilities |
| 32 | * defined in this file. Therefore, they are required to be powers |
37 | * defined in this file. Therefore, they are required to be powers |
| 33 | * of two. |
38 | * of two. |
| 34 | */ |
39 | */ |
| 35 | 40 | ||
| 36 | #ifndef __CAP_H__ |
41 | #ifndef __CAP_H__ |
| 37 | #define __CAP_H__ |
42 | #define __CAP_H__ |
| 38 | 43 | ||
| 39 | #include <arch/types.h> |
44 | #include <arch/types.h> |
| 40 | #include <typedefs.h> |
45 | #include <typedefs.h> |
| 41 | 46 | ||
| 42 | /** |
47 | /** |
| 43 | * CAP_CAP allows its holder to grant/revoke arbitrary |
48 | * CAP_CAP allows its holder to grant/revoke arbitrary |
| 44 | * privilege to/from other tasks. |
49 | * privilege to/from other tasks. |
| 45 | */ |
50 | */ |
| 46 | #define CAP_CAP (1<<0) |
51 | #define CAP_CAP (1<<0) |
| 47 | 52 | ||
| 48 | /** |
53 | /** |
| 49 | * CAP_MEM_MANAGER allows its holder to map physical memory |
54 | * CAP_MEM_MANAGER allows its holder to map physical memory |
| 50 | * to other tasks. |
55 | * to other tasks. |
| 51 | */ |
56 | */ |
| 52 | #define CAP_MEM_MANAGER (1<<1) |
57 | #define CAP_MEM_MANAGER (1<<1) |
| 53 | 58 | ||
| 54 | /** |
59 | /** |
| 55 | * CAP_IO_MANAGER allows its holder to access I/O space |
60 | * CAP_IO_MANAGER allows its holder to access I/O space |
| 56 | * to other tasks. |
61 | * to other tasks. |
| 57 | */ |
62 | */ |
| 58 | #define CAP_IO_MANAGER (1<<2) |
63 | #define CAP_IO_MANAGER (1<<2) |
| 59 | 64 | ||
| 60 | /** |
65 | /** |
| 61 | * CAP_INT_CONTROL allows its holder to disable interrupts |
66 | * CAP_INT_CONTROL allows its holder to disable interrupts |
| 62 | */ |
67 | */ |
| 63 | #define CAP_INT_CONTROL (1<<3) |
68 | #define CAP_INT_CONTROL (1<<3) |
| 64 | 69 | ||
| 65 | typedef __u32 cap_t; |
70 | typedef __u32 cap_t; |
| 66 | 71 | ||
| 67 | extern void cap_set(task_t *t, cap_t caps); |
72 | extern void cap_set(task_t *t, cap_t caps); |
| 68 | extern cap_t cap_get(task_t *t); |
73 | extern cap_t cap_get(task_t *t); |
| 69 | 74 | ||
| 70 | #endif |
75 | #endif |
| 71 | 76 | ||