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