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1174 | jermar | 1 | /* |
2 | * Copyright (C) 2006 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1888 | jermar | 29 | /** @addtogroup generic |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
1174 | jermar | 35 | /** |
1702 | cejka | 36 | * @file |
1264 | jermar | 37 | * @brief Capabilities definitions. |
38 | * |
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39 | * Capabilities represent virtual rights that entitle their |
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40 | * holder to perform certain security sensitive tasks. |
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41 | * |
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1174 | jermar | 42 | * Each task can have arbitrary combination of the capabilities |
43 | * defined in this file. Therefore, they are required to be powers |
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44 | * of two. |
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45 | */ |
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46 | |||
47 | #ifndef __CAP_H__ |
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48 | #define __CAP_H__ |
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49 | |||
1297 | jermar | 50 | #include <syscall/sysarg64.h> |
1174 | jermar | 51 | #include <arch/types.h> |
52 | #include <typedefs.h> |
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53 | |||
54 | /** |
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55 | * CAP_CAP allows its holder to grant/revoke arbitrary |
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56 | * privilege to/from other tasks. |
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57 | */ |
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58 | #define CAP_CAP (1<<0) |
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59 | |||
60 | /** |
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61 | * CAP_MEM_MANAGER allows its holder to map physical memory |
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62 | * to other tasks. |
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63 | */ |
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64 | #define CAP_MEM_MANAGER (1<<1) |
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65 | |||
66 | /** |
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67 | * CAP_IO_MANAGER allows its holder to access I/O space |
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68 | * to other tasks. |
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69 | */ |
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70 | #define CAP_IO_MANAGER (1<<2) |
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71 | |||
1212 | palkovsky | 72 | /** |
1297 | jermar | 73 | * CAP_PREEMPT_CONTROL allows its holder to disable/enable preemption. |
1212 | palkovsky | 74 | */ |
1297 | jermar | 75 | #define CAP_PREEMPT_CONTROL (1<<3) |
1212 | palkovsky | 76 | |
1297 | jermar | 77 | /** |
78 | * CAP_IRQ_REG entitles its holder to register IRQ handlers. |
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79 | */ |
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80 | #define CAP_IRQ_REG (1<<4) |
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81 | |||
1780 | jermar | 82 | typedef uint32_t cap_t; |
1174 | jermar | 83 | |
84 | extern void cap_set(task_t *t, cap_t caps); |
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85 | extern cap_t cap_get(task_t *t); |
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86 | |||
1780 | jermar | 87 | extern unative_t sys_cap_grant(sysarg64_t *uspace_taskid_arg, cap_t caps); |
88 | extern unative_t sys_cap_revoke(sysarg64_t *uspace_taskid_arg, cap_t caps); |
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1297 | jermar | 89 | |
1174 | jermar | 90 | #endif |
1702 | cejka | 91 | |
1888 | jermar | 92 | /** @} |
1702 | cejka | 93 | */ |