138 lines
4.8 KiB
C
138 lines
4.8 KiB
C
/* $NetBSD: netbsd32_event.c,v 1.2 2005/12/11 12:20:22 christos Exp $ */
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/*
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* Copyright (c) 2005 The NetBSD Foundation.
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* All rights reserved.
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*
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* This code is derived from software contributed to the NetBSD Foundation
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* by Quentin Garnier.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: netbsd32_event.c,v 1.2 2005/12/11 12:20:22 christos Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/select.h>
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#include <sys/event.h>
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#include <sys/eventvar.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/dirent.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscall.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/netbsd32/netbsd32_conv.h>
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static int
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netbsd32_kevent_fetch_timeout(const void *src, void *dest, size_t length)
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{
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struct netbsd32_timespec ts32;
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int error;
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KASSERT(length == sizeof(struct timespec));
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error = copyin(src, &ts32, sizeof(ts32));
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if (error)
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return error;
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netbsd32_to_timespec(&ts32, (struct timespec *)dest);
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return 0;
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}
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static int
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netbsd32_kevent_fetch_changes(void *private, const struct kevent *changelist,
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struct kevent *changes, size_t index, int n)
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{
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const struct netbsd32_kevent *src =
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(const struct netbsd32_kevent *)changelist;
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struct netbsd32_kevent *kev32, *changes32 = private;
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int error, i;
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error = copyin(src + index, changes32, n * sizeof(*changes32));
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if (error)
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return error;
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for (i = 0, kev32 = changes32; i < n; i++, kev32++, changes++)
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netbsd32_to_kevent(kev32, changes);
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return 0;
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}
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static int
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netbsd32_kevent_put_events(void *private, struct kevent *events,
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struct kevent *eventlist, size_t index, int n)
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{
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struct netbsd32_kevent *kev32, *events32 = private;
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int i;
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for (i = 0, kev32 = events32; i < n; i++, kev32++, events++)
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netbsd32_from_kevent(events, kev32);
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kev32 = (struct netbsd32_kevent *)eventlist;
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return copyout(events32, kev32, n * sizeof(*events32));
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}
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int
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netbsd32_kevent(struct lwp *l, void *v, register_t *retval)
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{
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struct netbsd32_kevent_args /* {
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syscallarg(int) fd;
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syscallarg(netbsd32_keventp_t) changelist;
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syscallarg(netbsd32_size_t) nchanges;
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syscallarg(netbsd32_keventp_t) eventlist;
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syscallarg(netbsd32_size_t) nevents;
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syscallarg(netbsd32_timespecp_t) timeout;
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} */ *uap = v;
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int error;
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size_t maxalloc, nchanges, nevents;
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struct kevent_ops netbsd32_kevent_ops = {
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keo_fetch_timeout: netbsd32_kevent_fetch_timeout,
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keo_fetch_changes: netbsd32_kevent_fetch_changes,
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keo_put_events: netbsd32_kevent_put_events,
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};
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nchanges = SCARG(uap, nchanges);
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nevents = SCARG(uap, nevents);
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maxalloc = MIN(KQ_NEVENTS, MAX(nchanges, nevents));
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netbsd32_kevent_ops.keo_private =
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malloc(maxalloc * sizeof(struct netbsd32_kevent), M_TEMP,
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M_WAITOK);
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error = kevent1(l, retval, SCARG(uap, fd),
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NETBSD32PTR64(SCARG(uap, changelist)), nchanges,
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NETBSD32PTR64(SCARG(uap, eventlist)), nevents,
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NETBSD32PTR64(SCARG(uap, timeout)), &netbsd32_kevent_ops);
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free(netbsd32_kevent_ops.keo_private, M_TEMP);
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return error;
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}
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