1/* $NetBSD: netbsd32_event.c,v 1.14 2023/07/29 12:48:15 rin Exp $ */ 2 3/* 4 * Copyright (c) 2005 The NetBSD Foundation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__KERNEL_RCSID(0, "$NetBSD: netbsd32_event.c,v 1.14 2023/07/29 12:48:15 rin Exp $"); 31 32#include <sys/types.h> 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/file.h> 36#include <sys/filedesc.h> 37#include <sys/select.h> 38#include <sys/event.h> 39#include <sys/eventvar.h> 40#include <sys/proc.h> 41#include <sys/dirent.h> 42 43#include <compat/netbsd32/netbsd32.h> 44#include <compat/netbsd32/netbsd32_syscall.h> 45#include <compat/netbsd32/netbsd32_syscallargs.h> 46#include <compat/netbsd32/netbsd32_conv.h> 47#include <compat/netbsd32/netbsd32_event.h> 48 49int 50netbsd32_kevent_fetch_timeout(const void *src, void *dest, size_t length) 51{ 52 struct netbsd32_timespec ts32; 53 int error; 54 55 KASSERT(length == sizeof(struct timespec)); 56 57 error = copyin(src, &ts32, sizeof(ts32)); 58 if (error) 59 return error; 60 netbsd32_to_timespec(&ts32, (struct timespec *)dest); 61 return 0; 62} 63 64static int 65netbsd32_kevent_fetch_changes(void *ctx, const struct kevent *changelist, 66 struct kevent *changes, size_t index, int n) 67{ 68 const struct netbsd32_kevent *src = 69 (const struct netbsd32_kevent *)changelist; 70 struct netbsd32_kevent *kev32, *changes32 = ctx; 71 int error, i; 72 73 error = copyin(src + index, changes32, n * sizeof(*changes32)); 74 if (error) 75 return error; 76 for (i = 0, kev32 = changes32; i < n; i++, kev32++, changes++) 77 netbsd32_to_kevent(kev32, changes); 78 return 0; 79} 80 81static int 82netbsd32_kevent_put_events(void *ctx, struct kevent *events, 83 struct kevent *eventlist, size_t index, int n) 84{ 85 struct netbsd32_kevent *kev32, *events32 = ctx; 86 int i; 87 88 for (i = 0, kev32 = events32; i < n; i++, kev32++, events++) 89 netbsd32_from_kevent(events, kev32); 90 kev32 = ((struct netbsd32_kevent *)eventlist) + index; 91 return copyout(events32, kev32, n * sizeof(*events32)); 92} 93 94int 95netbsd32_kevent1(register_t *retval, int fd, 96 const netbsd32_keventp_t changelist, netbsd32_size_t nchanges, 97 netbsd32_keventp_t eventlist, netbsd32_size_t nevents, 98 netbsd32_timespecp_t timeout, struct kevent_ops *kops) 99{ 100 const size_t maxalloc = KQ_NEVENTS; 101 int error; 102 103 kops->keo_private = 104 kmem_alloc(maxalloc * sizeof(struct netbsd32_kevent), KM_SLEEP); 105 106 error = kevent1(retval, fd, NETBSD32PTR64(changelist), nchanges, 107 NETBSD32PTR64(eventlist), nevents, NETBSD32PTR64(timeout), kops); 108 109 kmem_free(kops->keo_private, maxalloc * sizeof(struct netbsd32_kevent)); 110 return error; 111} 112 113int 114netbsd32___kevent100(struct lwp *l, 115 const struct netbsd32___kevent100_args *uap, register_t *retval) 116{ 117 /* { 118 syscallarg(int) fd; 119 syscallarg(const netbsd32_keventp_t) changelist; 120 syscallarg(netbsd32_size_t) nchanges; 121 syscallarg(netbsd32_keventp_t) eventlist; 122 syscallarg(netbsd32_size_t) nevents; 123 syscallarg(netbsd32_timespecp_t) timeout; 124 } */ 125 struct kevent_ops kops = { 126 .keo_fetch_timeout = netbsd32_kevent_fetch_timeout, 127 .keo_fetch_changes = netbsd32_kevent_fetch_changes, 128 .keo_put_events = netbsd32_kevent_put_events, 129 }; 130 131 return netbsd32_kevent1(retval, SCARG(uap, fd), 132 SCARG(uap, changelist), SCARG(uap, nchanges), 133 SCARG(uap, eventlist), SCARG(uap, nevents), 134 SCARG(uap, timeout), &kops); 135} 136