/*      $NetBSD: uvm_50.c,v 1.3 2020/09/05 16:30:10 riastradh Exp $     */

/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_50.c,v 1.3 2020/09/05 16:30:10 riastradh Exp $");

#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#endif

#if defined(_KERNEL) || defined(_MODULE)
#if defined(_KERNEL_OPT)
#include "opt_vmswap.h"
#else
#define VMSWAP  /* XXX */
#endif
#endif

#include <sys/param.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/syscallargs.h>
#include <sys/swap.h>

#include <uvm/uvm_swap.h>

#include <compat/sys/uvm.h>

static void
swapent50_cvt(void *p, const struct swapent *se)
{
       struct swapent50 *sep50 = p;

       sep50->se50_dev = se->se_dev;
       sep50->se50_flags = se->se_flags;
       sep50->se50_nblks = se->se_nblks;
       sep50->se50_inuse = se->se_inuse;
       sep50->se50_priority = se->se_priority;
       KASSERT(sizeof(se->se_path) <= sizeof(sep50->se50_path));
       strcpy(sep50->se50_path, se->se_path);
}


static int
compat_uvm_swap_stats50(const struct sys_swapctl_args *uap, register_t *retval)
{
    return uvm_swap_stats(SCARG(uap, arg), SCARG(uap, misc),
        swapent50_cvt, sizeof(struct swapent50), retval);

}

void
uvm_50_init(void)
{
       uvm_swap_stats50 = compat_uvm_swap_stats50;
}

void
uvm_50_fini(void)
{
       uvm_swap_stats50 = (void *)enosys;
}