52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
/*
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* \brief Interface to obtain the parent capability for the component
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* \author Norman Feske
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* \date 2013-09-25
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*
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* On Fiasco.OC, we transfer merely the 'local_name' part of the capability
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* via the '_parent_cap' field of the ELF binary.
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*/
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/*
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* Copyright (C) 2006-2017 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__BASE__INTERNAL__PARENT_CAP_H_
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#define _INCLUDE__BASE__INTERNAL__PARENT_CAP_H_
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/* Genode includes */
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#include <parent/capability.h>
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#include <util/string.h>
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#include <foc/native_capability.h>
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/* base-internal includes */
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#include <base/internal/crt0.h>
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#include <base/internal/cap_map.h>
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namespace Genode {
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static inline Parent_capability parent_cap()
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{
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unsigned long const local_name = _parent_cap;
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static Cap_index *i = cap_map()->insert(local_name,
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Fiasco::PARENT_CAP);
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/*
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* Update local name after a parent capability got reloaded via
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* 'Platform_env::reload_parent_cap()'.
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*/
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if (i->id() != local_name) {
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cap_map()->remove(i);
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i = cap_map()->insert(local_name, Fiasco::PARENT_CAP);
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}
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return reinterpret_cap_cast<Parent>(Native_capability(*i));
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}
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}
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#endif /* _INCLUDE__BASE__INTERNAL__PARENT_CAP_H_ */
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