linux_time.c revision 161304
1/* $NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos 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__FBSDID("$FreeBSD: head/sys/compat/linux/linux_time.c 161304 2006-08-15 12:20:59Z netchild $"); 41#if 0 42__KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $"); 43#endif 44 45#include "opt_compat.h" 46 47#include <sys/param.h> 48#include <sys/ucred.h> 49#include <sys/mount.h> 50#include <sys/signal.h> 51#include <sys/stdint.h> 52#include <sys/syscallsubr.h> 53#include <sys/sysproto.h> 54#include <sys/time.h> 55#include <sys/systm.h> 56#include <sys/proc.h> 57 58#ifdef COMPAT_LINUX32 59#include <machine/../linux32/linux.h> 60#include <machine/../linux32/linux32_proto.h> 61#else 62#include <machine/../linux/linux.h> 63#include <machine/../linux/linux_proto.h> 64#endif 65 66static void native_to_linux_timespec(struct l_timespec *, 67 struct timespec *); 68static void linux_to_native_timespec(struct timespec *, 69 struct l_timespec *); 70static int linux_to_native_clockid(clockid_t *, clockid_t); 71 72static void 73native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp) 74{ 75 ltp->tv_sec = ntp->tv_sec; 76 ltp->tv_nsec = ntp->tv_nsec; 77} 78 79static void 80linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp) 81{ 82 ntp->tv_sec = ltp->tv_sec; 83 ntp->tv_nsec = ltp->tv_nsec; 84} 85 86static int 87linux_to_native_clockid(clockid_t *n, clockid_t l) 88{ 89 switch (l) { 90 case LINUX_CLOCK_REALTIME: 91 *n = CLOCK_REALTIME; 92 break; 93 case LINUX_CLOCK_MONOTONIC: 94 *n = CLOCK_MONOTONIC; 95 break; 96 case LINUX_CLOCK_PROCESS_CPUTIME_ID: 97 case LINUX_CLOCK_THREAD_CPUTIME_ID: 98 case LINUX_CLOCK_REALTIME_HR: 99 case LINUX_CLOCK_MONOTONIC_HR: 100 return EINVAL; 101 } 102 103 return 0; 104} 105 106int 107linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args) 108{ 109 struct l_timespec lts; 110 int error; 111 clockid_t nwhich = 0; /* XXX: GCC */ 112 struct timespec tp; 113 114 error = linux_to_native_clockid(&nwhich, args->which); 115 if (error != 0) 116 return error; 117 118 error = kern_clock_gettime(td, nwhich, &tp); 119 if (error != 0) 120 return error; 121 122 native_to_linux_timespec(<s, &tp); 123 124 return copyout(<s, args->tp, sizeof lts); 125} 126 127int 128linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args) 129{ 130 struct timespec ts; 131 struct l_timespec lts; 132 int error; 133 clockid_t nwhich = 0; /* XXX: GCC */ 134 135 error = linux_to_native_clockid(&nwhich, args->which); 136 if (error != 0) 137 return error; 138 139 error = copyin(args->tp, <s, sizeof lts); 140 if (error != 0) 141 return error; 142 143 linux_to_native_timespec(&ts, <s); 144 145 return kern_clock_settime(td, nwhich, &ts); 146} 147 148int 149linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args) 150{ 151 struct timespec ts; 152 struct l_timespec lts; 153 int error; 154 clockid_t nwhich = 0; /* XXX: GCC */ 155 156 if (args->tp == NULL) 157 return (0); 158 159 error = linux_to_native_clockid(&nwhich, args->which); 160 if (error != 0) 161 return error; 162 163 error = kern_clock_getres(td, nwhich, &ts); 164 if (error != 0) 165 return error; 166 167 native_to_linux_timespec(<s, &ts); 168 169 return copyout(<s, args->tp, sizeof lts); 170} 171 172int 173linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args) 174{ 175 struct timespec *rmtp; 176 struct l_timespec lrqts, lrmts; 177 struct timespec rqts, rmts; 178 int error; 179 180 if (args->flags != 0) 181 return EINVAL; /* XXX deal with TIMER_ABSTIME */ 182 183 if (args->which != LINUX_CLOCK_REALTIME) 184 return EINVAL; 185 186 error = copyin(args->rqtp, &lrqts, sizeof lrqts); 187 if (error != 0) 188 return error; 189 190 if (args->rmtp != NULL) 191 rmtp = &rmts; 192 else 193 rmtp = NULL; 194 195 linux_to_native_timespec(&rqts, &lrqts); 196 197 error = kern_nanosleep(td, &rqts, rmtp); 198 if (error != 0) 199 return error; 200 if (args->rmtp != NULL) { 201 native_to_linux_timespec(&lrmts, rmtp); 202 error = copyout(&lrmts, args->rmtp, sizeof lrmts ); 203 if (error != 0) 204 return error; 205 } 206 207 return 0; 208} 209