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48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
/*
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* \brief Capability helper
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* \author Norman Feske
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* \date 2016-06-27
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*/
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/*
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* Copyright (C) 2016-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__NOVA__CAPABILITY_SPACE_H_
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#define _INCLUDE__NOVA__CAPABILITY_SPACE_H_
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/* Genode includes */
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#include <base/capability.h>
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/* NOVA includes */
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#include <nova/syscalls.h>
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namespace Genode { namespace Capability_space {
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enum { INVALID_INDEX = ~0UL };
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typedef Nova::Crd Ipc_cap_data;
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static inline Nova::Crd crd(Native_capability const &cap)
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{
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/*
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* We store the 'Nova::Crd' value in place of the 'Data' pointer.
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*/
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addr_t value = (addr_t)cap.data();
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Nova::Crd crd = *(Nova::Crd *)&value;
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return crd;
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}
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static inline Native_capability import(addr_t sel, unsigned rights = 0x1f)
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{
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Nova::Obj_crd const crd = (sel == INVALID_INDEX)
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? Nova::Obj_crd() : Nova::Obj_crd(sel, 0, rights);
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return Native_capability(*(Native_capability::Data *)crd.value());
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}
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} }
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#endif /* _INCLUDE__NOVA__CAPABILITY_SPACE_H_ */
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