1 /* $NetBSD: kern_time_30.c,v 1.8 2019/12/15 16:48:26 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 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_30.c,v 1.8 2019/12/15 16:48:26 tsutsui Exp $"); 33 34 #ifdef _KERNEL_OPT 35 #include "opt_compat_netbsd.h" 36 #include "opt_ntp.h" 37 #endif 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/time.h> 42 #include <sys/timex.h> 43 #include <sys/syscall.h> 44 #include <sys/syscallvar.h> 45 #include <sys/syscallargs.h> 46 #include <sys/compat_stub.h> 47 48 #include <compat/common/compat_mod.h> 49 #include <compat/common/compat_util.h> 50 #include <compat/sys/time.h> 51 #include <compat/sys/timex.h> 52 53 static const struct syscall_package kern_time_30_syscalls[] = { 54 { SYS_compat_30_ntp_gettime, 0, 55 (sy_call_t *)compat_30_sys_ntp_gettime }, 56 { 0, 0, NULL } 57 }; 58 59 int 60 compat_30_sys_ntp_gettime(struct lwp *l, 61 const struct compat_30_sys_ntp_gettime_args *uap, register_t *retval) 62 { 63 /* { 64 syscallarg(struct ntptimeval30 *) ontvp; 65 } */ 66 struct ntptimeval ntv; 67 struct ntptimeval30 ntv30; 68 struct timeval tv; 69 int error; 70 71 if (vec_ntp_gettime == NULL) 72 return ENOSYS; 73 74 if (SCARG(uap, ntvp)) { 75 (*vec_ntp_gettime)(&ntv); 76 memset(&ntv30, 0, sizeof(ntv30)); 77 TIMESPEC_TO_TIMEVAL(&tv, &ntv.time); 78 timeval_to_timeval50(&tv, &ntv30.time); 79 ntv30.maxerror = ntv.maxerror; 80 ntv30.esterror = ntv.esterror; 81 82 error = copyout(&ntv30, SCARG(uap, ntvp), sizeof(ntv30)); 83 if (error) 84 return error; 85 } 86 *retval = (*vec_ntp_timestatus)(); 87 return 0; 88 } 89 90 int 91 kern_time_30_init(void) 92 { 93 94 return syscall_establish(NULL, kern_time_30_syscalls); 95 } 96 97 int 98 kern_time_30_fini(void) 99 { 100 101 return syscall_disestablish(NULL, kern_time_30_syscalls); 102 } 103