1// -*- Mode: C++ -*-
2// vim:ft=cpp
3/**
4 * \file   cap
5 * \brief  Capability utility functions
6 */
7/*
8 * (c) 2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>
9 *     economic rights: Technische Universität Dresden (Germany)
10 *
11 * This file is part of TUD:OS and distributed under the terms of the
12 * GNU General Public License 2.
13 * Please see the COPYING-GPL-2 file for details.
14 *
15 * As a special exception, you may use this file as part of a free software
16 * library without restriction.  Specifically, if other files instantiate
17 * templates or use macros or inline functions from this file, or you compile
18 * this file and link it with other files to produce an executable, this
19 * file does not by itself cause the resulting executable to be covered by
20 * the GNU General Public License.  This exception does not however
21 * invalidate any other reasons why the executable file might be covered by
22 * the GNU General Public License.
23 */
24
25#pragma once
26
27#include <l4/sys/task>
28
29namespace L4Re { namespace Util {
30
31/**
32 * \brief Release a capability from a task (unmap).
33 * \ingroup api_l4re_util
34 *
35 * Note that the given capability does not need to be handled by the
36 * capability allocator in any way.
37 */
38L4_CV static inline l4_msgtag_t cap_release(L4::Cap<void> cap)
39{
40  return l4_task_unmap(L4_BASE_TASK_CAP,
41                       l4_obj_fpage(cap.cap(), 0, L4_FPAGE_RWX),
42		       L4_FP_ALL_SPACES);
43}
44
45}}
46