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/* cap.h - Basic capability framework interface.
Copyright (C) 2007, 2008 Free Software Foundation, Inc.
Written by Neal H. Walfield <neal@gnu.org>.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3 of the
License, or (at your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef RM_CAP_H
#define RM_CAP_H
#include <l4.h>
#include <viengoos/cap.h>
/* The number of slots in a capability object of the given type. */
extern const int cap_type_num_slots[];
/* Set's the capability TARGET to point to the same object as the
capability SOURCE, however, preserves the guard in TARGET. */
static inline bool
cap_set (struct activity *activity, struct vg_cap *target, struct vg_cap source)
{
/* This is kosher as we know the implementation of CAP_COPY. */
return vg_cap_copy_simple (activity,
VG_ADDR_VOID, target, VG_ADDR_VOID,
VG_ADDR_VOID, source, VG_ADDR_VOID);
}
/* Invalidate all mappings that may depend on this object. */
extern void cap_shootdown (struct activity *activity, struct vg_cap *cap);
/* Return the object designated by CAP, if any. */
struct vg_object *vg_cap_to_object (struct activity *activity,
struct vg_cap *cap);
/* Like vg_cap_to_object but only returns the object if it is in
memory. */
struct vg_object *cap_to_object_soft (struct activity *activity,
struct vg_cap *cap);
#endif
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