1 /* $NetBSD: linux32_time.c,v 1.13 2007/05/12 20:24:54 dsl Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Emmanuel Dreyfus 17 * 4. The name of the author may not be used to endorse or promote 18 * products derived from this software without specific prior written 19 * permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' 22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 36 __KERNEL_RCSID(0, "$NetBSD: linux32_time.c,v 1.13 2007/05/12 20:24:54 dsl Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/fstypes.h> 41 #include <sys/signal.h> 42 #include <sys/dirent.h> 43 #include <sys/kauth.h> 44 #include <sys/kernel.h> 45 #include <sys/fcntl.h> 46 #include <sys/namei.h> 47 #include <sys/select.h> 48 #include <sys/proc.h> 49 #include <sys/resourcevar.h> 50 #include <sys/ucred.h> 51 #include <sys/swap.h> 52 #include <sys/vfs_syscalls.h> 53 54 #include <machine/types.h> 55 56 #include <sys/syscallargs.h> 57 58 #include <compat/netbsd32/netbsd32.h> 59 #include <compat/netbsd32/netbsd32_conv.h> 60 #include <compat/netbsd32/netbsd32_syscallargs.h> 61 62 #include <compat/linux/common/linux_types.h> 63 #include <compat/linux/common/linux_signal.h> 64 #include <compat/linux/common/linux_machdep.h> 65 #include <compat/linux/common/linux_misc.h> 66 #include <compat/linux/common/linux_oldolduname.h> 67 #include <compat/linux/linux_syscallargs.h> 68 69 #include <compat/linux32/common/linux32_types.h> 70 #include <compat/linux32/common/linux32_signal.h> 71 #include <compat/linux32/common/linux32_machdep.h> 72 #include <compat/linux32/common/linux32_sysctl.h> 73 #include <compat/linux32/common/linux32_socketcall.h> 74 #include <compat/linux32/linux32_syscallargs.h> 75 76 extern struct timezone linux_sys_tz; 77 int 78 linux32_sys_gettimeofday(l, v, retval) 79 struct lwp *l; 80 void *v; 81 register_t *retval; 82 { 83 struct linux32_sys_gettimeofday_args /* { 84 syscallarg(netbsd32_timevalp_t) tp; 85 syscallarg(netbsd32_timezonep_t) tzp; 86 } */ *uap = v; 87 struct timeval tv; 88 struct netbsd32_timeval tv32; 89 int error; 90 91 if (SCARG_P32(uap, tp) != NULL) { 92 microtime(&tv); 93 netbsd32_from_timeval(&tv, &tv32); 94 if ((error = copyout(&tv32, SCARG_P32(uap, tp), 95 sizeof(tv32))) != 0) 96 return error; 97 } 98 99 /* timezone size does not change */ 100 if (SCARG_P32(uap, tzp) != NULL) { 101 if ((error = copyout(&linux_sys_tz, SCARG_P32(uap, tzp), 102 sizeof(linux_sys_tz))) != 0) 103 return error; 104 } 105 106 return 0; 107 } 108 109 int 110 linux32_sys_settimeofday(l, v, retval) 111 struct lwp *l; 112 void *v; 113 register_t *retval; 114 { 115 struct linux32_sys_settimeofday_args /* { 116 syscallarg(netbsd32_timevalp_t) tp; 117 syscallarg(netbsd32_timezonep_t) tzp; 118 } */ *uap = v; 119 struct linux_sys_settimeofday_args ua; 120 121 NETBSD32TOP_UAP(tp, struct timeval); 122 NETBSD32TOP_UAP(tzp, struct timezone); 123 124 return linux_sys_settimeofday(l, &ua, retval); 125 } 126 127 int 128 linux32_sys_time(l, v, retval) 129 struct lwp *l; 130 void *v; 131 register_t *retval; 132 { 133 struct linux32_sys_time_args /* { 134 syscallcarg(linux32_timep_t) t; 135 } */ *uap = v; 136 struct timeval atv; 137 linux32_time_t tt; 138 int error; 139 140 microtime(&atv); 141 142 tt = (linux32_time_t)atv.tv_sec; 143 144 if (SCARG_P32(uap, t) && (error = copyout(&tt, 145 SCARG_P32(uap, t), sizeof(tt)))) 146 return error; 147 148 retval[0] = tt; 149 150 return 0; 151 } 152 153 154 static inline linux32_clock_t 155 timeval_to_clock_t(struct timeval *tv) 156 { 157 return tv->tv_sec * hz + tv->tv_usec / (1000000 / hz); 158 } 159 160 int 161 linux32_sys_times(l, v, retval) 162 struct lwp *l; 163 void *v; 164 register_t *retval; 165 { 166 struct linux32_sys_times_args /* { 167 syscallarg(linux32_tmsp_t) tms; 168 } */ *uap = v; 169 struct linux32_tms ltms32; 170 171 struct timeval t; 172 struct rusage *ru; 173 struct proc *p = l->l_proc; 174 175 ru = &p->p_stats->p_ru; 176 mutex_enter(&p->p_smutex); 177 calcru(p, &ru->ru_utime, &ru->ru_stime, NULL, NULL); 178 mutex_exit(&p->p_smutex); 179 180 ltms32.ltms32_utime = timeval_to_clock_t(&ru->ru_utime); 181 ltms32.ltms32_stime = timeval_to_clock_t(&ru->ru_stime); 182 183 ru = &p->p_stats->p_cru; 184 ltms32.ltms32_cutime = timeval_to_clock_t(&ru->ru_utime); 185 ltms32.ltms32_cstime = timeval_to_clock_t(&ru->ru_stime); 186 187 microtime(&t); 188 *retval = timeval_to_clock_t(&t); 189 190 return copyout(<ms32, SCARG_P32(uap, tms), sizeof(ltms32)); 191 } 192 193 int 194 linux32_sys_stime(l, v, retval) 195 struct lwp *l; 196 void *v; 197 register_t *retval; 198 { 199 struct linux32_sys_stime_args /* { 200 syscallarg(linux32_timep_t) t; 201 } */ *uap = v; 202 struct timespec ts; 203 linux32_time_t tt32; 204 int error; 205 206 if ((error = kauth_authorize_system(l->l_cred, 207 KAUTH_SYSTEM_TIME, KAUTH_REQ_SYSTEM_TIME_SYSTEM, NULL, NULL, 208 NULL)) != 0) 209 return error; 210 211 if ((error = copyin(&tt32, SCARG_P32(uap, t), sizeof tt32)) != 0) 212 return error; 213 214 ts.tv_sec = (long)tt32; 215 ts.tv_nsec = 0; 216 217 return settime(l->l_proc, &ts); 218 } 219 220 int 221 linux32_sys_utime(l, v, retval) 222 struct lwp *l; 223 void *v; 224 register_t *retval; 225 { 226 struct linux32_sys_utime_args /* { 227 syscallarg(const netbsd32_charp) path; 228 syscallarg(linux32_utimbufp_t) times; 229 } */ *uap = v; 230 struct timeval tv[2], *tvp; 231 struct linux32_utimbuf lut; 232 int error; 233 234 if (SCARG_P32(uap, times) != NULL) { 235 if ((error = copyin(SCARG_P32(uap, times), &lut, sizeof lut))) 236 return error; 237 238 tv[0].tv_sec = (long)lut.l_actime; 239 tv[0].tv_usec = 0; 240 tv[1].tv_sec = (long)lut.l_modtime; 241 tv[1].tv_usec = 0; 242 tvp = tv; 243 } else { 244 tvp = NULL; 245 } 246 247 return do_sys_utimes(l, NULL, SCARG_P32(uap, path), FOLLOW, 248 tvp, UIO_SYSSPACE); 249 } 250