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 * 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 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 #if 0 35 __KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $"); 36 #endif 37 38 #include "opt_compat.h" 39 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/syscallsubr.h> 46 #include <sys/sysproto.h> 47 #include <sys/time.h> 48 #include <sys/systm.h> 49 #include <sys/proc.h> 50 51 #ifdef COMPAT_LINUX32 52 #include <machine/../linux32/linux.h> 53 #include <machine/../linux32/linux32_proto.h> 54 #else 55 #include <machine/../linux/linux.h> 56 #include <machine/../linux/linux_proto.h> 57 #endif 58 59 static void native_to_linux_timespec(struct l_timespec *, 60 struct timespec *); 61 static int linux_to_native_timespec(struct timespec *, 62 struct l_timespec *); 63 static int linux_to_native_clockid(clockid_t *, clockid_t); 64 65 static void 66 native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp) 67 { 68 ltp->tv_sec = ntp->tv_sec; 69 ltp->tv_nsec = ntp->tv_nsec; 70 } 71 72 static int 73 linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp) 74 { 75 if (ltp->tv_sec < 0 || ltp->tv_nsec > (l_long)999999999L) 76 return (EINVAL); 77 ntp->tv_sec = ltp->tv_sec; 78 ntp->tv_nsec = ltp->tv_nsec; 79 80 return (0); 81 } 82 83 static int 84 linux_to_native_clockid(clockid_t *n, clockid_t l) 85 { 86 switch (l) { 87 case LINUX_CLOCK_REALTIME: 88 *n = CLOCK_REALTIME; 89 break; 90 case LINUX_CLOCK_MONOTONIC: 91 *n = CLOCK_MONOTONIC; 92 break; 93 case LINUX_CLOCK_PROCESS_CPUTIME_ID: 94 case LINUX_CLOCK_THREAD_CPUTIME_ID: 95 case LINUX_CLOCK_REALTIME_HR: 96 case LINUX_CLOCK_MONOTONIC_HR: 97 default: 98 return (EINVAL); 99 break; 100 } 101 102 return (0); 103 } 104 105 int 106 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args) 107 { 108 struct l_timespec lts; 109 int error; 110 clockid_t nwhich = 0; /* XXX: GCC */ 111 struct timespec tp; 112 113 error = linux_to_native_clockid(&nwhich, args->which); 114 if (error != 0) 115 return (error); 116 error = kern_clock_gettime(td, nwhich, &tp); 117 if (error != 0) 118 return (error); 119 native_to_linux_timespec(<s, &tp); 120 121 return (copyout(<s, args->tp, sizeof lts)); 122 } 123 124 int 125 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args) 126 { 127 struct timespec ts; 128 struct l_timespec lts; 129 int error; 130 clockid_t nwhich = 0; /* XXX: GCC */ 131 132 error = linux_to_native_clockid(&nwhich, args->which); 133 if (error != 0) 134 return (error); 135 error = copyin(args->tp, <s, sizeof lts); 136 if (error != 0) 137 return (error); 138 error = linux_to_native_timespec(&ts, <s); 139 if (error != 0) 140 return (error); 141 142 return (kern_clock_settime(td, nwhich, &ts)); 143 } 144 145 int 146 linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args) 147 { 148 struct timespec ts; 149 struct l_timespec lts; 150 int error; 151 clockid_t nwhich = 0; /* XXX: GCC */ 152 153 if (args->tp == NULL) 154 return (0); 155 156 error = linux_to_native_clockid(&nwhich, args->which); 157 if (error != 0) 158 return (error); 159 error = kern_clock_getres(td, nwhich, &ts); 160 if (error != 0) 161 return (error); 162 native_to_linux_timespec(<s, &ts); 163 164 return (copyout(<s, args->tp, sizeof lts)); 165 } 166 167 int 168 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args) 169 { 170 struct timespec *rmtp; 171 struct l_timespec lrqts, lrmts; 172 struct timespec rqts, rmts; 173 int error; 174 175 error = copyin(args->rqtp, &lrqts, sizeof lrqts); 176 if (error != 0) 177 return (error); 178 179 if (args->rmtp != NULL) 180 rmtp = &rmts; 181 else 182 rmtp = NULL; 183 184 error = linux_to_native_timespec(&rqts, &lrqts); 185 if (error != 0) 186 return (error); 187 error = kern_nanosleep(td, &rqts, rmtp); 188 if (error != 0) 189 return (error); 190 191 if (args->rmtp != NULL) { 192 native_to_linux_timespec(&lrmts, rmtp); 193 error = copyout(&lrmts, args->rmtp, sizeof(lrmts)); 194 if (error != 0) 195 return (error); 196 } 197 198 return (0); 199 } 200 201 int 202 linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args) 203 { 204 struct timespec *rmtp; 205 struct l_timespec lrqts, lrmts; 206 struct timespec rqts, rmts; 207 int error; 208 209 if (args->flags != 0) 210 return (EINVAL); /* XXX deal with TIMER_ABSTIME */ 211 212 if (args->which != LINUX_CLOCK_REALTIME) 213 return (EINVAL); 214 215 error = copyin(args->rqtp, &lrqts, sizeof lrqts); 216 if (error != 0) 217 return (error); 218 219 if (args->rmtp != NULL) 220 rmtp = &rmts; 221 else 222 rmtp = NULL; 223 224 error = linux_to_native_timespec(&rqts, &lrqts); 225 if (error != 0) 226 return (error); 227 error = kern_nanosleep(td, &rqts, rmtp); 228 if (error != 0) 229 return (error); 230 231 if (args->rmtp != NULL) { 232 native_to_linux_timespec(&lrmts, rmtp); 233 error = copyout(&lrmts, args->rmtp, sizeof lrmts ); 234 if (error != 0) 235 return (error); 236 } 237 238 return (0); 239 } 240