1 /* $NetBSD: linux_time.c,v 1.2 2001/05/15 20:35:02 manu Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Emmanuel Dreyfus. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/ucred.h> 42 #include <sys/mount.h> 43 #include <sys/signal.h> 44 #include <sys/stdint.h> 45 #include <sys/time.h> 46 #include <sys/systm.h> 47 #include <sys/syscallargs.h> 48 49 #include <compat/linux/common/linux_types.h> 50 #include <compat/linux/common/linux_signal.h> 51 52 #include <compat/linux/linux_syscallargs.h> 53 54 /* 55 * This is not implemented for alpha yet 56 */ 57 #if defined (__i386__) || defined (__m68k__) || defined (__powerpc__) 58 59 /* 60 * Linux keeps track of a system timezone in the kernel. It is readen 61 * by gettimeofday and set by settimeofday. This emulates this behavior 62 * See linux/kernel/time.c 63 */ 64 struct timezone linux_sys_tz; 65 66 int linux_sys_gettimeofday(p, v, retval) 67 struct proc *p; 68 void *v; 69 register_t *retval; 70 { 71 struct linux_sys_gettimeofday_args /* { 72 syscallarg(struct timeval *) tz; 73 syscallarg(struct timezone *) tzp; 74 } */ *uap = v; 75 int error = 0; 76 77 if (SCARG(uap, tp)) { 78 error = sys_gettimeofday (p, v, retval); 79 if (error) 80 return (error); 81 } 82 83 if (SCARG(uap, tzp)) { 84 error = copyout(&linux_sys_tz, SCARG(uap, tzp), sizeof(linux_sys_tz)); 85 if (error) 86 return (error); 87 } 88 89 return (0); 90 } 91 92 int linux_sys_settimeofday(p, v, retval) 93 struct proc *p; 94 void *v; 95 register_t *retval; 96 { 97 struct linux_sys_settimeofday_args /* { 98 syscallarg(struct timeval *) tz; 99 syscallarg(struct timezone *) tzp; 100 } */ *uap = v; 101 int error = 0; 102 103 if (SCARG(uap, tp)) { 104 error = sys_settimeofday(p, v, retval); 105 if (error) 106 return (error); 107 } 108 109 /* 110 * If user is not the superuser, we returned 111 * after the sys_settimeofday() call. 112 */ 113 if (SCARG(uap, tzp)) { 114 error = copyin(SCARG(uap, tzp), &linux_sys_tz, sizeof(linux_sys_tz)); 115 if (error) 116 return (error); 117 } 118 119 return (0); 120 } 121 122 #endif /* __i386__ || __m68k__ || __powerpc__ */ 123