1 /* $NetBSD: uvm_50.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_50.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 swapent50_cvt(void *p, const struct swapent *se) 59 { 60 struct swapent50 *sep50 = p; 61 62 sep50->se50_dev = se->se_dev; 63 sep50->se50_flags = se->se_flags; 64 sep50->se50_nblks = se->se_nblks; 65 sep50->se50_inuse = se->se_inuse; 66 sep50->se50_priority = se->se_priority; 67 KASSERT(sizeof(se->se_path) <= sizeof(sep50->se50_path)); 68 strcpy(sep50->se50_path, se->se_path); 69 } 70 71 72 static int 73 compat_uvm_swap_stats50(const struct sys_swapctl_args *uap, register_t *retval) 74 { 75 return uvm_swap_stats(SCARG(uap, arg), SCARG(uap, misc), 76 swapent50_cvt, sizeof(struct swapent50), retval); 77 78 } 79 80 void 81 uvm_50_init(void) 82 { 83 uvm_swap_stats50 = compat_uvm_swap_stats50; 84 } 85 86 void 87 uvm_50_fini(void) 88 { 89 uvm_swap_stats50 = (void *)enosys; 90 } 91