60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/* $NetBSD: granttables.h,v 1.4 2007/11/22 16:16:56 bouyer Exp $ */
|
|
/*
|
|
* Copyright (c) 2006 Manuel Bouyer.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Manuel Bouyer.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*
|
|
*/
|
|
|
|
/* Interface to the Xen Grant tables */
|
|
#include <xen/xen3-public/grant_table.h>
|
|
|
|
void xengnt_init(void);
|
|
|
|
/*
|
|
* grant access to a remote domain. Returns a handle on the allocated grant
|
|
* entry in table in grant_ref_t *.
|
|
*/
|
|
int xengnt_grant_access(domid_t, paddr_t, int, grant_ref_t *);
|
|
|
|
/*
|
|
* Revoke access. Caller is responsible to ensure that the grant entry is
|
|
* not referenced any more.
|
|
*/
|
|
void xengnt_revoke_access(grant_ref_t);
|
|
|
|
/* allow a page transfer from a remote domain */
|
|
int xengnt_grant_transfer(domid_t, grant_ref_t *);
|
|
|
|
/* end transfer, return the new page address or 0 */
|
|
paddr_t xengnt_revoke_transfer(grant_ref_t);
|
|
|
|
/*
|
|
* Query grant status (i.e. if remote has a valid mapping to this grant).
|
|
* Returns GTF_reading | GTF_writing.
|
|
*/
|
|
int xengnt_status(grant_ref_t);
|