Home | History | Annotate | Line # | Download | only in common 
      1 /*	$NetBSD: uvm_13.c,v 1.3 2020/09/05 16:30:10 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: uvm_13.c,v 1.3 2020/09/05 16:30:10 riastradh Exp $");
     34 
     35 #if defined(_KERNEL_OPT)
     36 #include "opt_compat_netbsd.h"
     37 #endif
     38 
     39 #if defined(_KERNEL) || defined(_MODULE)
     40 #if defined(_KERNEL_OPT)
     41 #include "opt_vmswap.h"
     42 #else
     43 #define VMSWAP	/* XXX */
     44 #endif
     45 #endif
     46 
     47 #include <sys/param.h>
     48 #include <sys/types.h>
     49 #include <sys/systm.h>
     50 #include <sys/syscallargs.h>
     51 #include <sys/swap.h>
     52 
     53 #include <uvm/uvm_swap.h>
     54 
     55 #include <compat/sys/uvm.h>
     56 
     57 static void
     58 swapent13_cvt(void *p, const struct swapent *se)
     59 {
     60 	struct swapent13 *sep13 = p;
     61 
     62 	sep13->se13_dev = se->se_dev;
     63 	sep13->se13_flags = se->se_flags;
     64 	sep13->se13_nblks = se->se_nblks;
     65 	sep13->se13_inuse = se->se_inuse;
     66 	sep13->se13_priority = se->se_priority;
     67 }
     68 
     69 
     70 static int
     71 compat_uvm_swap_stats13(const struct sys_swapctl_args *uap, register_t *retval)
     72 {
     73      return uvm_swap_stats(SCARG(uap, arg), SCARG(uap, misc),
     74 	 swapent13_cvt, sizeof(struct swapent13), retval);
     75 
     76 }
     77 
     78 void
     79 uvm_13_init(void)
     80 {
     81 	uvm_swap_stats13 = compat_uvm_swap_stats13;
     82 }
     83 
     84 void
     85 uvm_13_fini(void)
     86 {
     87 	uvm_swap_stats13 = (void *)enosys;
     88 }
     89