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/*
* Copyright (c) 2016 Citrix Systems Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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/>.
*/
#include <xen/dm.h>
#include <xen/guest_access.h>
#include <xen/hypercall.h>
#include <xen/nospec.h>
long do_dm_op(
domid_t domid, unsigned int nr_bufs,
XEN_GUEST_HANDLE_PARAM(xen_dm_op_buf_t) bufs)
{
struct dmop_args args;
int rc;
if ( nr_bufs > ARRAY_SIZE(args.buf) )
return -E2BIG;
args.domid = domid;
args.nr_bufs = array_index_nospec(nr_bufs, ARRAY_SIZE(args.buf) + 1);
if ( copy_from_guest_offset(&args.buf[0], bufs, 0, args.nr_bufs) )
return -EFAULT;
rc = dm_op(&args);
if ( rc == -ERESTART )
rc = hypercall_create_continuation(__HYPERVISOR_dm_op, "iih",
domid, nr_bufs, bufs);
return rc;
}
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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