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("$FreeBSD$"); 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 66 static void native_to_linux_timespec(struct l_timespec *, 67 struct timespec *); 68 static int linux_to_native_timespec(struct timespec *, 69 struct l_timespec *); 70 static int linux_to_native_clockid(clockid_t *, clockid_t); 71 72 static void 73 native_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 79 static int 80 linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp) 81 { 82 if (ltp->tv_sec < 0 || ltp->tv_nsec > (l_long)999999999L) 83 return (EINVAL); 84 ntp->tv_sec = ltp->tv_sec; 85 ntp->tv_nsec = ltp->tv_nsec; 86 87 return (0); 88 } 89 90 static int 91 linux_to_native_clockid(clockid_t *n, clockid_t l) 92 { 93 switch (l) { 94 case LINUX_CLOCK_REALTIME: 95 *n = CLOCK_REALTIME; 96 break; 97 case LINUX_CLOCK_MONOTONIC: 98 *n = CLOCK_MONOTONIC; 99 break; 100 case LINUX_CLOCK_PROCESS_CPUTIME_ID: 101 case LINUX_CLOCK_THREAD_CPUTIME_ID: 102 case LINUX_CLOCK_REALTIME_HR: 103 case LINUX_CLOCK_MONOTONIC_HR: 104 default: 105 return (EINVAL); 106 break; 107 } 108 109 return (0); 110 } 111 112 int 113 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args) 114 { 115 struct l_timespec lts; 116 int error; 117 clockid_t nwhich = 0; /* XXX: GCC */ 118 struct timespec tp; 119 120 error = linux_to_native_clockid(&nwhich, args->which); 121 if (error != 0) 122 return (error); 123 error = kern_clock_gettime(td, nwhich, &tp); 124 if (error != 0) 125 return (error); 126 native_to_linux_timespec(<s, &tp); 127 128 return (copyout(<s, args->tp, sizeof lts)); 129 } 130 131 int 132 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args) 133 { 134 struct timespec ts; 135 struct l_timespec lts; 136 int error; 137 clockid_t nwhich = 0; /* XXX: GCC */ 138 139 error = linux_to_native_clockid(&nwhich, args->which); 140 if (error != 0) 141 return (error); 142 error = copyin(args->tp, <s, sizeof lts); 143 if (error != 0) 144 return (error); 145 error = linux_to_native_timespec(&ts, <s); 146 if (error != 0) 147 return (error); 148 149 return (kern_clock_settime(td, nwhich, &ts)); 150 } 151 152 int 153 linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args) 154 { 155 struct timespec ts; 156 struct l_timespec lts; 157 int error; 158 clockid_t nwhich = 0; /* XXX: GCC */ 159 160 if (args->tp == NULL) 161 return (0); 162 163 error = linux_to_native_clockid(&nwhich, args->which); 164 if (error != 0) 165 return (error); 166 error = kern_clock_getres(td, nwhich, &ts); 167 if (error != 0) 168 return (error); 169 native_to_linux_timespec(<s, &ts); 170 171 return (copyout(<s, args->tp, sizeof lts)); 172 } 173 174 int 175 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args) 176 { 177 struct timespec *rmtp; 178 struct l_timespec lrqts, lrmts; 179 struct timespec rqts, rmts; 180 int error; 181 182 error = copyin(args->rqtp, &lrqts, sizeof lrqts); 183 if (error != 0) 184 return (error); 185 186 if (args->rmtp != NULL) 187 rmtp = &rmts; 188 else 189 rmtp = NULL; 190 191 error = linux_to_native_timespec(&rqts, &lrqts); 192 if (error != 0) 193 return (error); 194 error = kern_nanosleep(td, &rqts, rmtp); 195 if (error != 0) 196 return (error); 197 198 if (args->rmtp != NULL) { 199 native_to_linux_timespec(&lrmts, rmtp); 200 error = copyout(&lrmts, args->rmtp, sizeof(lrmts)); 201 if (error != 0) 202 return (error); 203 } 204 205 return (0); 206 } 207 208 int 209 linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args) 210 { 211 struct timespec *rmtp; 212 struct l_timespec lrqts, lrmts; 213 struct timespec rqts, rmts; 214 int error; 215 216 if (args->flags != 0) 217 return (EINVAL); /* XXX deal with TIMER_ABSTIME */ 218 219 if (args->which != LINUX_CLOCK_REALTIME) 220 return (EINVAL); 221 222 error = copyin(args->rqtp, &lrqts, sizeof lrqts); 223 if (error != 0) 224 return (error); 225 226 if (args->rmtp != NULL) 227 rmtp = &rmts; 228 else 229 rmtp = NULL; 230 231 error = linux_to_native_timespec(&rqts, &lrqts); 232 if (error != 0) 233 return (error); 234 error = kern_nanosleep(td, &rqts, rmtp); 235 if (error != 0) 236 return (error); 237 238 if (args->rmtp != NULL) { 239 native_to_linux_timespec(&lrmts, rmtp); 240 error = copyout(&lrmts, args->rmtp, sizeof lrmts ); 241 if (error != 0) 242 return (error); 243 } 244 245 return (0); 246 } 247