| 1 | /* $NetBSD: netbsd32_event.c,v 1.12 2014/09/05 05:26:26 matt 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 1.12 2014/09/05 05:26:26 matt 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 | |
| 48 | static int |
| 49 | netbsd32_kevent_fetch_timeout(const void *src, void *dest, size_t length) |
| 50 | { |
| 51 | struct netbsd32_timespec ts32; |
| 52 | int error; |
| 53 | |
| 54 | KASSERT(length == sizeof(struct timespec)); |
| 55 | |
| 56 | error = copyin(src, &ts32, sizeof(ts32)); |
| 57 | if (error) |
| 58 | return error; |
| 59 | netbsd32_to_timespec(&ts32, (struct timespec *)dest); |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | static int |
| 64 | netbsd32_kevent_fetch_changes(void *ctx, const struct kevent *changelist, |
| 65 | struct kevent *changes, size_t index, int n) |
| 66 | { |
| 67 | const struct netbsd32_kevent *src = |
| 68 | (const struct netbsd32_kevent *)changelist; |
| 69 | struct netbsd32_kevent *kev32, *changes32 = ctx; |
| 70 | int error, i; |
| 71 | |
| 72 | error = copyin(src + index, changes32, n * sizeof(*changes32)); |
| 73 | if (error) |
| 74 | return error; |
| 75 | for (i = 0, kev32 = changes32; i < n; i++, kev32++, changes++) |
| 76 | netbsd32_to_kevent(kev32, changes); |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | static int |
| 81 | netbsd32_kevent_put_events(void *ctx, struct kevent *events, |
| 82 | struct kevent *eventlist, size_t index, int n) |
| 83 | { |
| 84 | struct netbsd32_kevent *kev32, *events32 = ctx; |
| 85 | int i; |
| 86 | |
| 87 | for (i = 0, kev32 = events32; i < n; i++, kev32++, events++) |
| 88 | netbsd32_from_kevent(events, kev32); |
| 89 | kev32 = ((struct netbsd32_kevent *)eventlist) + index; |
| 90 | return copyout(events32, kev32, n * sizeof(*events32)); |
| 91 | } |
| 92 | |
| 93 | int |
| 94 | netbsd32___kevent50(struct lwp *l, |
| 95 | const struct netbsd32___kevent50_args *uap, register_t *retval) |
| 96 | { |
| 97 | /* { |
| 98 | syscallarg(int) fd; |
| 99 | syscallarg(netbsd32_keventp_t) changelist; |
| 100 | syscallarg(netbsd32_size_t) nchanges; |
| 101 | syscallarg(netbsd32_keventp_t) eventlist; |
| 102 | syscallarg(netbsd32_size_t) nevents; |
| 103 | syscallarg(netbsd32_timespecp_t) timeout; |
| 104 | } */ |
| 105 | int error; |
| 106 | size_t maxalloc, nchanges, nevents; |
| 107 | struct kevent_ops netbsd32_kevent_ops = { |
| 108 | .keo_fetch_timeout = netbsd32_kevent_fetch_timeout, |
| 109 | .keo_fetch_changes = netbsd32_kevent_fetch_changes, |
| 110 | .keo_put_events = netbsd32_kevent_put_events, |
| 111 | }; |
| 112 | |
| 113 | nchanges = SCARG(uap, nchanges); |
| 114 | nevents = SCARG(uap, nevents); |
| 115 | maxalloc = KQ_NEVENTS; |
| 116 | |
| 117 | netbsd32_kevent_ops.keo_private = |
| 118 | kmem_alloc(maxalloc * sizeof(struct netbsd32_kevent), KM_SLEEP); |
| 119 | |
| 120 | error = kevent1(retval, SCARG(uap, fd), |
| 121 | NETBSD32PTR64(SCARG(uap, changelist)), nchanges, |
| 122 | NETBSD32PTR64(SCARG(uap, eventlist)), nevents, |
| 123 | NETBSD32PTR64(SCARG(uap, timeout)), &netbsd32_kevent_ops); |
| 124 | |
| 125 | kmem_free(netbsd32_kevent_ops.keo_private, |
| 126 | maxalloc * sizeof(struct netbsd32_kevent)); |
| 127 | return error; |
| 128 | } |
| 129 | |