/*
* Copyright (C) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup generic
* @{
*/
/** @file
*/
/**
* @file
* @brief Capabilities definitions.
*
* Capabilities represent virtual rights that entitle their
* holder to perform certain security sensitive tasks.
*
* Each task can have arbitrary combination of the capabilities
* defined in this file. Therefore, they are required to be powers
* of two.
*/
#ifndef __CAP_H__
#define __CAP_H__
#include <syscall/sysarg64.h>
#include <arch/types.h>
#include <typedefs.h>
/**
* CAP_CAP allows its holder to grant/revoke arbitrary
* privilege to/from other tasks.
*/
#define CAP_CAP (1<<0)
/**
* CAP_MEM_MANAGER allows its holder to map physical memory
* to other tasks.
*/
#define CAP_MEM_MANAGER (1<<1)
/**
* CAP_IO_MANAGER allows its holder to access I/O space
* to other tasks.
*/
#define CAP_IO_MANAGER (1<<2)
/**
* CAP_PREEMPT_CONTROL allows its holder to disable/enable preemption.
*/
#define CAP_PREEMPT_CONTROL (1<<3)
/**
* CAP_IRQ_REG entitles its holder to register IRQ handlers.
*/
#define CAP_IRQ_REG (1<<4)
typedef uint32_t cap_t;
extern void cap_set(task_t *t, cap_t caps);
extern cap_t cap_get(task_t *t);
extern unative_t sys_cap_grant(sysarg64_t *uspace_taskid_arg, cap_t caps);
extern unative_t sys_cap_revoke(sysarg64_t *uspace_taskid_arg, cap_t caps);
#endif
/** @}
*/