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801d09f166
Revoke the right to set the portal id (aka label) when it is not needed anymore. Otherwise everybody in the system having a mapping of the portal can reset the label to something we don't expect. Issue #667
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
/*
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* \brief Client-side CAP session interface
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* \author Norman Feske
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* \author Alexander Boettcher
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* \date 2006-07-10
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*/
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/*
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* Copyright (C) 2006-2013 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 General Public License version 2.
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*/
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#ifndef _INCLUDE__CAP_SESSION__CLIENT_H_
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#define _INCLUDE__CAP_SESSION__CLIENT_H_
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#include <cap_session/capability.h>
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#include <cap_session/cap_session.h>
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#include <base/rpc_client.h>
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namespace Genode {
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struct Cap_session_client : Rpc_client<Cap_session>
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{
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explicit Cap_session_client(Cap_session_capability session)
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: Rpc_client<Cap_session>(session) { }
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Native_capability alloc(Native_capability ep, addr_t entry = 0,
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addr_t flags = 0)
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{
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Native_capability cap = call<Rpc_alloc>(ep, entry, flags);
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using namespace Nova;
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/* set our local name */
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if (NOVA_OK != pt_ctrl(cap.local_name(), cap.local_name()))
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nova_die();
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/* disable the feature for security reasons now */
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revoke(Obj_crd(cap.local_name(), 0, Obj_crd::RIGHT_PT_CTRL));
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return cap;
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}
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void free(Native_capability cap) { call<Rpc_free>(cap); }
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};
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}
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#endif /* _INCLUDE__CAP_SESSION__CLIENT_H_ */
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