genode/repos/base-nova/src/core/include/imprint_badge.h

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C++

/*
* \brief Utility to imprint a badge into a NOVA portal
* \author Norman Feske
* \date 2016-03-03
*/
/*
* Copyright (C) 2016-2017 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef _CORE__INCLUDE__IMPRINT_BADGE_H_
#define _CORE__INCLUDE__IMPRINT_BADGE_H_
/* NOVA includes */
#include <nova/syscalls.h>
static inline bool imprint_badge(unsigned long pt_sel, unsigned long badge)
{
using namespace Nova;
/* assign badge to portal */
if (pt_ctrl(pt_sel, badge) != NOVA_OK)
return false;
/* disable PT_CTRL permission to prevent subsequent imprint attempts */
revoke(Obj_crd(pt_sel, 0, Obj_crd::RIGHT_PT_CTRL));
return true;
}
#endif /* _CORE__INCLUDE__IMPRINT_BADGE_H_ */