1 /* $NetBSD: linux_time.c,v 1.7 2002/01/17 15:10:26 rjs 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.7 2002/01/17 15:10:26 rjs Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/ucred.h> 44 #include <sys/mount.h> 45 #include <sys/signal.h> 46 #include <sys/stdint.h> 47 #include <sys/time.h> 48 #include <sys/systm.h> 49 #include <sys/syscallargs.h> 50 51 #include <compat/linux/common/linux_types.h> 52 #include <compat/linux/common/linux_signal.h> 53 54 #include <compat/linux/linux_syscallargs.h> 55 56 /* 57 * This is not implemented for alpha yet 58 */ 59 #if defined (__i386__) || defined (__m68k__) || \ 60 defined (__powerpc__) || defined (__mips__) || defined(__arm__) 61 62 /* 63 * Linux keeps track of a system timezone in the kernel. It is readen 64 * by gettimeofday and set by settimeofday. This emulates this behavior 65 * See linux/kernel/time.c 66 */ 67 struct timezone linux_sys_tz; 68 69 int linux_sys_gettimeofday(p, v, retval) 70 struct proc *p; 71 void *v; 72 register_t *retval; 73 { 74 struct linux_sys_gettimeofday_args /* { 75 syscallarg(struct timeval *) tz; 76 syscallarg(struct timezone *) tzp; 77 } */ *uap = v; 78 int error = 0; 79 80 if (SCARG(uap, tp)) { 81 error = sys_gettimeofday (p, v, retval); 82 if (error) 83 return (error); 84 } 85 86 if (SCARG(uap, tzp)) { 87 error = copyout(&linux_sys_tz, SCARG(uap, tzp), sizeof(linux_sys_tz)); 88 if (error) 89 return (error); 90 } 91 92 return (0); 93 } 94 95 int linux_sys_settimeofday(p, v, retval) 96 struct proc *p; 97 void *v; 98 register_t *retval; 99 { 100 struct linux_sys_settimeofday_args /* { 101 syscallarg(struct timeval *) tz; 102 syscallarg(struct timezone *) tzp; 103 } */ *uap = v; 104 int error = 0; 105 106 if (SCARG(uap, tp)) { 107 error = sys_settimeofday(p, v, retval); 108 if (error) 109 return (error); 110 } 111 112 /* 113 * If user is not the superuser, we returned 114 * after the sys_settimeofday() call. 115 */ 116 if (SCARG(uap, tzp)) { 117 error = copyin(SCARG(uap, tzp), &linux_sys_tz, sizeof(linux_sys_tz)); 118 if (error) 119 return (error); 120 } 121 122 return (0); 123 } 124 125 #endif /* __i386__ || __m68k__ || __powerpc__ || __mips__ || __arm__ */ 126