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/*-
* Copyright (c) 2008-2010 Robert N. M. Watson
* All rights reserved.
*
* This software was developed at the University of Cambridge Computer
* Laboratory with support from a grant from Google, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Definitions for FreeBSD capabilities facility.
*/
#ifndef _SYS_CAPABILITY_H_
#define _SYS_CAPABILITY_H_
#include <sys/cdefs.h>
#include <sys/types.h>
#ifdef _KERNEL
#define IN_CAPABILITY_MODE(td) (td->td_ucred->cr_flags & CRED_FLAG_CAPMODE)
#else /* !_KERNEL */
__BEGIN_DECLS
/*
* cap_enter(): Cause the process to enter capability mode, which will
* prevent it from directly accessing global namespaces. System calls will
* be limited to process-local, process-inherited, or file descriptor
* operations. If already in capability mode, a no-op.
*
* Currently, process-inherited operations are not properly handled -- in
* particular, we're interested in things like waitpid(2), kill(2), etc,
* being properly constrained. One possible solution is to introduce process
* descriptors.
*/
int cap_enter(void);
/*
* cap_getmode(): Are we in capability mode?
*/
int cap_getmode(u_int* modep);
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_SYS_CAPABILITY_H_ */
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