| 1 | /*
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| 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 |
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| 29 | /** @addtogroup generic
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | /**
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| 36 | * @file
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| 37 | * @brief Task permissions definitions.
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| 38 | *
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| 39 | * Permissions 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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| 42 | * Each task can have arbitrary combination of the permissions
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| 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 |
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| 47 | #ifndef __PERM_H__
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| 48 | #define __PERM_H__
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| 49 |
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| 50 | #include <typedefs.h>
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| 51 |
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| 52 | /**
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| 53 | * PERM_PERM allows its holder to grant/revoke arbitrary permission to/from
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| 54 | * other tasks.
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| 55 | */
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| 56 | #define PERM_PERM (1 << 0)
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| 57 |
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| 58 | /**
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| 59 | * PERM_MEM_MANAGER allows its holder to map physical memory to other tasks.
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| 60 | */
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| 61 | #define PERM_MEM_MANAGER (1 << 1)
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| 62 |
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| 63 | /**
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| 64 | * PERM_IO_MANAGER allows its holder to access I/O space to other tasks.
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| 65 | */
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| 66 | #define PERM_IO_MANAGER (1 << 2)
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| 67 |
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| 68 | /**
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| 69 | * PERM_IRQ_REG entitles its holder to register IRQ handlers.
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| 70 | */
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| 71 | #define PERM_IRQ_REG (1 << 3)
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| 72 |
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| 73 | typedef uint32_t perm_t;
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| 74 |
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| 75 | #ifdef __32_BITS__
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| 76 |
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| 77 | extern sysarg_t sys_perm_grant(sysarg64_t *, perm_t);
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| 78 | extern sysarg_t sys_perm_revoke(sysarg64_t *, perm_t);
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| 79 |
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| 80 | #endif /* __32_BITS__ */
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| 81 |
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| 82 | #ifdef __64_BITS__
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| 83 |
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| 84 | extern sysarg_t sys_perm_grant(sysarg_t, perm_t);
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| 85 | extern sysarg_t sys_perm_revoke(sysarg_t, perm_t);
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| 86 |
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| 87 | #endif /* __64_BITS__ */
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| 88 |
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| 89 | #endif
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| 90 |
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| 91 | /** @}
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| 92 | */
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