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      1 /*	$NetBSD: kern_event_100.c,v 1.1 2023/07/28 18:19:00 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2023 The NetBSD Foundation, Inc.
      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 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: kern_event_100.c,v 1.1 2023/07/28 18:19:00 christos Exp $");
     30 
     31 #if defined(_KERNEL_OPT)
     32 #include "opt_compat_netbsd.h"
     33 #endif
     34 
     35 #include <sys/param.h>
     36 #include <sys/event.h>
     37 #include <sys/syscall.h>
     38 #include <sys/syscallvar.h>
     39 #include <sys/syscallargs.h>
     40 
     41 #include <compat/common/compat_mod.h>
     42 #include <compat/sys/event.h>
     43 
     44 static const struct syscall_package kern_event_100_syscalls[] = {
     45 	{ SYS_compat_100___kevent50, 0,
     46 	    (sy_call_t *)compat_100_sys___kevent50 },
     47 	{ 0, 0, NULL },
     48 };
     49 
     50 int
     51 compat_100_sys___kevent50(struct lwp *l,
     52     const struct compat_100_sys___kevent50_args *uap,
     53     register_t *retval)
     54 {
     55 	/* {
     56 		syscallarg(int) fd;
     57 		syscallarg(const struct kevent100 *) changelist;
     58 		syscallarg(size_t) nchanges;
     59 		syscallarg(struct kevent100 *) eventlist;
     60 		syscallarg(size_t) nevents;
     61 		syscallarg(const struct timespec *) timeout;
     62 	} */
     63 	static const struct kevent_ops compat_100_kevent_ops = {
     64 		.keo_private = NULL,
     65 		.keo_fetch_timeout = copyin,
     66 		.keo_fetch_changes = compat_100___kevent50_fetch_changes,
     67 		.keo_put_events = compat_100___kevent50_put_events,
     68 	};
     69 
     70 	return kevent1(retval, SCARG(uap, fd),
     71 	    (const struct kevent *)SCARG(uap, changelist), SCARG(uap, nchanges),
     72 	    (struct kevent *)SCARG(uap, eventlist), SCARG(uap, nevents),
     73 	    SCARG(uap, timeout), &compat_100_kevent_ops);
     74 }
     75 
     76 int
     77 kern_event_100_init(void)
     78 {
     79 
     80 	return syscall_establish(NULL, kern_event_100_syscalls);
     81 }
     82 
     83 int
     84 kern_event_100_fini(void)
     85 {
     86 
     87 	return syscall_disestablish(NULL, kern_event_100_syscalls);
     88 }
     89