Home | History | Annotate | Line # | Download | only in common 
      1 /*	$NetBSD: kern_time_60.c,v 1.3 2020/01/29 15:47:51 ad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2013, 2020 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 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: kern_time_60.c,v 1.3 2020/01/29 15:47:51 ad Exp $");
     33 
     34 #if defined(_KERNEL_OPT)
     35 #include "opt_compat_netbsd.h"
     36 #endif
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/lwp.h>
     41 #include <sys/time.h>
     42 #include <sys/syscall.h>
     43 #include <sys/syscallvar.h>
     44 #include <sys/syscallargs.h>
     45 
     46 #include <compat/common/compat_util.h>
     47 #include <compat/common/compat_mod.h>
     48 
     49 static const struct syscall_package compat_60_syscalls[] = {
     50 	{ SYS_compat_60__lwp_park, 0, (sy_call_t *)compat_60_sys__lwp_park },
     51 	{ 0, 0, NULL }
     52 };
     53 
     54 int
     55 compat_60_sys__lwp_park(struct lwp *l,
     56     const struct compat_60_sys__lwp_park_args *uap, register_t *retval)
     57 {
     58 	/* {
     59 		syscallarg(const struct timespec *)	ts;
     60 		syscallarg(lwpid_t)			unpark;
     61 		syscallarg(const void *)		hint;
     62 		syscallarg(const void *)		unparkhint;
     63 	} */
     64 
     65 	int error;
     66 	struct timespec ts, *tsp;
     67 
     68 	if (SCARG(uap, ts) == NULL)
     69 		tsp = NULL;
     70 	else {
     71 		error = copyin(SCARG(uap, ts), &ts, sizeof(ts));
     72 		if (error != 0)
     73 			return error;
     74 		tsp = &ts;
     75 	}
     76 
     77 	if (SCARG(uap, unpark) != 0) {
     78 		error = lwp_unpark(&SCARG(uap, unpark), 1);
     79 		if (error != 0)
     80 			return error;
     81 	}
     82 
     83 	return lwp_park(CLOCK_REALTIME, TIMER_ABSTIME, tsp);
     84 }
     85 
     86 int
     87 kern_time_60_init(void)
     88 {
     89 
     90 	return syscall_establish(NULL, compat_60_syscalls);
     91 }
     92 
     93 int
     94 kern_time_60_fini(void)
     95 {
     96 
     97 	return syscall_disestablish(NULL, compat_60_syscalls);
     98 }
     99