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netbsd32_compat_50.c revision 1.53
      1 /*	$NetBSD: netbsd32_compat_50.c,v 1.53 2022/10/26 23:23:52 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008, 2020 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      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 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_50.c,v 1.53 2022/10/26 23:23:52 riastradh Exp $");
     33 
     34 #if defined(_KERNEL_OPT)
     35 #include "opt_compat_netbsd.h"
     36 #include "opt_compat_netbsd32.h"
     37 #include "opt_ntp.h"
     38 #include "opt_quota.h"
     39 #endif
     40 
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/module.h>
     45 #include <sys/mount.h>
     46 #include <sys/socket.h>
     47 #include <sys/socketvar.h>
     48 #include <sys/stat.h>
     49 #include <sys/time.h>
     50 #include <sys/timevar.h>
     51 #include <sys/timex.h>
     52 #include <sys/ktrace.h>
     53 #include <sys/eventvar.h>
     54 #include <sys/resourcevar.h>
     55 #include <sys/vnode.h>
     56 #include <sys/file.h>
     57 #include <sys/filedesc.h>
     58 #include <sys/poll.h>
     59 #include <sys/namei.h>
     60 #include <sys/statvfs.h>
     61 #include <sys/syscallargs.h>
     62 #include <sys/syscallvar.h>
     63 #include <sys/proc.h>
     64 #include <sys/dirent.h>
     65 #include <sys/kauth.h>
     66 #include <sys/vfs_syscalls.h>
     67 #include <sys/compat_stub.h>
     68 #include <sys/module_hook.h>
     69 
     70 #include <compat/netbsd32/netbsd32.h>
     71 #include <compat/netbsd32/netbsd32_syscall.h>
     72 #include <compat/netbsd32/netbsd32_syscallargs.h>
     73 #include <compat/netbsd32/netbsd32_conv.h>
     74 #include <compat/sys/mount.h>
     75 #include <compat/sys/time.h>
     76 #include <compat/sys/rnd.h>
     77 
     78 #if defined(COMPAT_50)
     79 
     80 /*
     81  * Common routine to set access and modification times given a vnode.
     82  */
     83 static int
     84 get_utimes32(const netbsd32_timeval50p_t *tptr, struct timeval *tv,
     85     struct timeval **tvp)
     86 {
     87 	int error;
     88 	struct netbsd32_timeval50 tv32[2];
     89 
     90 	if (tptr == NULL) {
     91 		*tvp = NULL;
     92 		return 0;
     93 	}
     94 
     95 	error = copyin(tptr, tv32, sizeof(tv32));
     96 	if (error)
     97 		return error;
     98 	netbsd32_to_timeval50(&tv32[0], &tv[0]);
     99 	netbsd32_to_timeval50(&tv32[1], &tv[1]);
    100 
    101 	*tvp = tv;
    102 	return 0;
    103 }
    104 
    105 int
    106 compat_50_netbsd32_mknod(struct lwp *l,
    107     const struct compat_50_netbsd32_mknod_args *uap, register_t *retval)
    108 {
    109 	/* {
    110 		syscallarg(netbsd32_charp) path;
    111 		syscallarg(mode_t) mode;
    112 		syscallarg(uint32_t) dev;
    113 	} */
    114 	return do_sys_mknod(l, SCARG_P32(uap, path), SCARG(uap, mode),
    115 	    SCARG(uap, dev), UIO_USERSPACE);
    116 }
    117 
    118 int
    119 compat_50_netbsd32_select(struct lwp *l,
    120     const struct compat_50_netbsd32_select_args *uap, register_t *retval)
    121 {
    122 	/* {
    123 		syscallarg(int) nd;
    124 		syscallarg(netbsd32_fd_setp_t) in;
    125 		syscallarg(netbsd32_fd_setp_t) ou;
    126 		syscallarg(netbsd32_fd_setp_t) ex;
    127 		syscallarg(netbsd32_timeval50p_t) tv;
    128 	} */
    129 	int error;
    130 	struct netbsd32_timeval50 tv32;
    131 	struct timespec ats, *ts = NULL;
    132 
    133 	if (SCARG_P32(uap, tv)) {
    134 		error = copyin(SCARG_P32(uap, tv), &tv32, sizeof(tv32));
    135 		if (error != 0)
    136 			return error;
    137 
    138 		if (tv32.tv_usec < 0 || tv32.tv_usec >= 1000000)
    139 			return EINVAL;
    140 
    141 		ats.tv_sec = tv32.tv_sec;
    142 		ats.tv_nsec = tv32.tv_usec * 1000;
    143 		ts = &ats;
    144 	}
    145 
    146 	return selcommon(retval, SCARG(uap, nd), SCARG_P32(uap, in),
    147 	    SCARG_P32(uap, ou), SCARG_P32(uap, ex), ts, NULL);
    148 }
    149 
    150 int
    151 compat_50_netbsd32_gettimeofday(struct lwp *l,
    152     const struct compat_50_netbsd32_gettimeofday_args *uap, register_t *retval)
    153 {
    154 	/* {
    155 		syscallarg(netbsd32_timeval50p_t) tp;
    156 		syscallarg(netbsd32_timezonep_t) tzp;
    157 	} */
    158 	struct timeval atv;
    159 	struct netbsd32_timeval50 tv32;
    160 	int error = 0;
    161 	struct netbsd32_timezone tzfake;
    162 
    163 	if (SCARG_P32(uap, tp)) {
    164 		microtime(&atv);
    165 		netbsd32_from_timeval50(&atv, &tv32);
    166 		error = copyout(&tv32, SCARG_P32(uap, tp), sizeof(tv32));
    167 		if (error)
    168 			return error;
    169 	}
    170 	if (SCARG_P32(uap, tzp)) {
    171 		/*
    172 		 * NetBSD has no kernel notion of time zone, so we just
    173 		 * fake up a timezone struct and return it if demanded.
    174 		 */
    175 		memset(&tzfake, 0, sizeof(tzfake));
    176 		tzfake.tz_minuteswest = 0;
    177 		tzfake.tz_dsttime = 0;
    178 		error = copyout(&tzfake, SCARG_P32(uap, tzp), sizeof(tzfake));
    179 	}
    180 	return error;
    181 }
    182 
    183 int
    184 compat_50_netbsd32_settimeofday(struct lwp *l,
    185     const struct compat_50_netbsd32_settimeofday_args *uap, register_t *retval)
    186 {
    187 	/* {
    188 		syscallarg(const netbsd32_timeval50p_t) tv;
    189 		syscallarg(const netbsd32_timezonep_t) tzp;
    190 	} */
    191 	struct netbsd32_timeval50 atv32;
    192 	struct timeval atv;
    193 	struct timespec ats;
    194 	int error;
    195 	struct proc *p = l->l_proc;
    196 
    197 	/* Verify all parameters before changing time. */
    198 
    199 	/*
    200 	 * NetBSD has no kernel notion of time zone, and only an
    201 	 * obsolete program would try to set it, so we log a warning.
    202 	 */
    203 	if (SCARG_P32(uap, tzp))
    204 		printf("pid %d attempted to set the "
    205 		    "(obsolete) kernel time zone\n", p->p_pid);
    206 
    207 	if (SCARG_P32(uap, tv) == 0)
    208 		return 0;
    209 
    210 	if ((error = copyin(SCARG_P32(uap, tv), &atv32, sizeof(atv32))) != 0)
    211 		return error;
    212 
    213 	netbsd32_to_timeval50(&atv32, &atv);
    214 
    215 	if (atv.tv_usec < 0 || atv.tv_usec >= 1000000)
    216 		return EINVAL;
    217 
    218 	TIMEVAL_TO_TIMESPEC(&atv, &ats);
    219 	return settime(p, &ats);
    220 }
    221 
    222 int
    223 compat_50_netbsd32_utimes(struct lwp *l,
    224     const struct compat_50_netbsd32_utimes_args *uap, register_t *retval)
    225 {
    226 	/* {
    227 		syscallarg(const netbsd32_charp) path;
    228 		syscallarg(const netbsd32_timeval50p_t) tptr;
    229 	} */
    230 	int error;
    231 	struct timeval tv[2], *tvp;
    232 
    233 	error = get_utimes32(SCARG_P32(uap, tptr), tv, &tvp);
    234 	if (error != 0)
    235 		return error;
    236 
    237 	return do_sys_utimes(l, NULL, SCARG_P32(uap, path), FOLLOW,
    238 	    tvp, UIO_SYSSPACE);
    239 }
    240 
    241 int
    242 compat_50_netbsd32_adjtime(struct lwp *l,
    243     const struct compat_50_netbsd32_adjtime_args *uap, register_t *retval)
    244 {
    245 	/* {
    246 		syscallarg(const netbsd32_timeval50p_t) delta;
    247 		syscallarg(netbsd32_timeval50p_t) olddelta;
    248 	} */
    249 	struct netbsd32_timeval50 atv;
    250 	int error;
    251 
    252 	if ((error = kauth_authorize_system(l->l_cred,
    253 	    KAUTH_SYSTEM_TIME, KAUTH_REQ_SYSTEM_TIME_ADJTIME, NULL, NULL,
    254 	    NULL)) != 0)
    255 		return error;
    256 
    257 	if (SCARG_P32(uap, olddelta)) {
    258 		memset(&atv, 0, sizeof(atv));
    259 
    260 		mutex_spin_enter(&timecounter_lock);
    261 		atv.tv_sec = time_adjtime / 1000000;
    262 		atv.tv_usec = time_adjtime % 1000000;
    263 		if (atv.tv_usec < 0) {
    264 			atv.tv_usec += 1000000;
    265 			atv.tv_sec--;
    266 		}
    267 		mutex_spin_exit(&timecounter_lock);
    268 
    269 		error = copyout(&atv, SCARG_P32(uap, olddelta), sizeof(atv));
    270 		if (error)
    271 			return error;
    272 	}
    273 
    274 	if (SCARG_P32(uap, delta)) {
    275 		error = copyin(SCARG_P32(uap, delta), &atv, sizeof(atv));
    276 		if (error)
    277 			return error;
    278 
    279 		mutex_spin_enter(&timecounter_lock);
    280 		time_adjtime = (int64_t)atv.tv_sec * 1000000 + atv.tv_usec;
    281 		if (time_adjtime)
    282 			/* We need to save the system time during shutdown */
    283 			time_adjusted |= 1;
    284 		mutex_spin_exit(&timecounter_lock);
    285 	}
    286 
    287 	return 0;
    288 }
    289 
    290 int
    291 compat_50_netbsd32_futimes(struct lwp *l,
    292     const struct compat_50_netbsd32_futimes_args *uap, register_t *retval)
    293 {
    294 	/* {
    295 		syscallarg(int) fd;
    296 		syscallarg(const netbsd32_timeval50p_t) tptr;
    297 	} */
    298 	int error;
    299 	file_t *fp;
    300 	struct timeval tv[2], *tvp;
    301 
    302 	error = get_utimes32(SCARG_P32(uap, tptr), tv, &tvp);
    303 	if (error != 0)
    304 		return error;
    305 
    306 	/* fd_getvnode() will use the descriptor for us */
    307 	if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0)
    308 		return error;
    309 
    310 	error = do_sys_utimes(l, fp->f_vnode, NULL, 0, tvp, UIO_SYSSPACE);
    311 
    312 	fd_putfile(SCARG(uap, fd));
    313 	return error;
    314 }
    315 
    316 int
    317 compat_50_netbsd32_clock_gettime(struct lwp *l,
    318     const struct compat_50_netbsd32_clock_gettime_args *uap, register_t *retval)
    319 {
    320 	/* {
    321 		syscallarg(netbsd32_clockid_t) clock_id;
    322 		syscallarg(netbsd32_timespec50p_t) tp;
    323 	} */
    324 	int error;
    325 	struct timespec ats;
    326 	struct netbsd32_timespec50 ts32;
    327 
    328 	error = clock_gettime1(SCARG(uap, clock_id), &ats);
    329 	if (error != 0)
    330 		return error;
    331 
    332 	netbsd32_from_timespec50(&ats, &ts32);
    333 	return copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32));
    334 }
    335 
    336 int
    337 compat_50_netbsd32_clock_settime(struct lwp *l,
    338     const struct compat_50_netbsd32_clock_settime_args *uap, register_t *retval)
    339 {
    340 	/* {
    341 		syscallarg(netbsd32_clockid_t) clock_id;
    342 		syscallarg(const netbsd32_timespec50p_t) tp;
    343 	} */
    344 	struct netbsd32_timespec50 ts32;
    345 	struct timespec ats;
    346 	int error;
    347 
    348 	if ((error = copyin(SCARG_P32(uap, tp), &ts32, sizeof(ts32))) != 0)
    349 		return error;
    350 
    351 	netbsd32_to_timespec50(&ts32, &ats);
    352 	return clock_settime1(l->l_proc, SCARG(uap, clock_id), &ats, true);
    353 }
    354 
    355 int
    356 compat_50_netbsd32_clock_getres(struct lwp *l,
    357     const struct compat_50_netbsd32_clock_getres_args *uap, register_t *retval)
    358 {
    359 	/* {
    360 		syscallarg(netbsd32_clockid_t) clock_id;
    361 		syscallarg(netbsd32_timespec50p_t) tp;
    362 	} */
    363 	struct netbsd32_timespec50 ts32;
    364 	struct timespec ts;
    365 	int error;
    366 
    367 	error = clock_getres1(SCARG(uap, clock_id), &ts);
    368 	if (error != 0)
    369 		return error;
    370 
    371 	if (SCARG_P32(uap, tp)) {
    372 		netbsd32_from_timespec50(&ts, &ts32);
    373 		error = copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32));
    374 	}
    375 
    376 	return error;
    377 }
    378 
    379 int
    380 compat_50_netbsd32_timer_settime(struct lwp *l,
    381     const struct compat_50_netbsd32_timer_settime_args *uap, register_t *retval)
    382 {
    383 	/* {
    384 		syscallarg(netbsd32_timer_t) timerid;
    385 		syscallarg(int) flags;
    386 		syscallarg(const netbsd32_itimerspec50p_t) value;
    387 		syscallarg(netbsd32_itimerspec50p_t) ovalue;
    388 	} */
    389 	int error;
    390 	struct itimerspec value, ovalue, *ovp = NULL;
    391 	struct netbsd32_itimerspec50 its32;
    392 
    393 	if ((error = copyin(SCARG_P32(uap, value), &its32, sizeof(its32))) != 0)
    394 		return error;
    395 	netbsd32_to_timespec50(&its32.it_interval, &value.it_interval);
    396 	netbsd32_to_timespec50(&its32.it_value, &value.it_value);
    397 
    398 	if (SCARG_P32(uap, ovalue))
    399 		ovp = &ovalue;
    400 
    401 	if ((error = dotimer_settime(SCARG(uap, timerid), &value, ovp,
    402 	    SCARG(uap, flags), l->l_proc)) != 0)
    403 		return error;
    404 
    405 	if (ovp) {
    406 		memset(&its32, 0, sizeof(its32));
    407 		netbsd32_from_timespec50(&ovp->it_interval, &its32.it_interval);
    408 		netbsd32_from_timespec50(&ovp->it_value, &its32.it_value);
    409 		return copyout(&its32, SCARG_P32(uap, ovalue), sizeof(its32));
    410 	}
    411 	return 0;
    412 }
    413 
    414 int
    415 compat_50_netbsd32_timer_gettime(struct lwp *l, const struct compat_50_netbsd32_timer_gettime_args *uap, register_t *retval)
    416 {
    417 	/* {
    418 		syscallarg(netbsd32_timer_t) timerid;
    419 		syscallarg(netbsd32_itimerspec50p_t) value;
    420 	} */
    421 	int error;
    422 	struct itimerspec its;
    423 	struct netbsd32_itimerspec50 its32;
    424 
    425 	if ((error = dotimer_gettime(SCARG(uap, timerid), l->l_proc,
    426 	    &its)) != 0)
    427 		return error;
    428 
    429 	memset(&its32, 0, sizeof(its32));
    430 
    431 	netbsd32_from_timespec50(&its.it_interval, &its32.it_interval);
    432 	netbsd32_from_timespec50(&its.it_value, &its32.it_value);
    433 
    434 	return copyout(&its32, SCARG_P32(uap, value), sizeof(its32));
    435 }
    436 
    437 int
    438 compat_50_netbsd32_nanosleep(struct lwp *l,
    439     const struct compat_50_netbsd32_nanosleep_args *uap, register_t *retval)
    440 {
    441 	/* {
    442 		syscallarg(const netbsd32_timespec50p_t) rqtp;
    443 		syscallarg(netbsd32_timespecp_t) rmtp;
    444 	} */
    445 	struct netbsd32_timespec50 ts32;
    446 	struct timespec rqt, rmt;
    447 	int error, error1;
    448 
    449 	error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32));
    450 	if (error)
    451 		return error;
    452 	netbsd32_to_timespec50(&ts32, &rqt);
    453 
    454 	error = nanosleep1(l, CLOCK_MONOTONIC, 0, &rqt,
    455 	    SCARG_P32(uap, rmtp) ? &rmt : NULL);
    456 	if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR))
    457 		return error;
    458 
    459 	netbsd32_from_timespec50(&rmt, &ts32);
    460 	error1 = copyout(&ts32, SCARG_P32(uap,rmtp), sizeof(ts32));
    461 	return error1 ? error1 : error;
    462 }
    463 
    464 static int
    465 compat_50_netbsd32_sigtimedwait_put_info(const void *src, void *dst, size_t size)
    466 {
    467 	const siginfo_t *info = src;
    468 	siginfo32_t info32;
    469 
    470 	netbsd32_si_to_si32(&info32, info);
    471 
    472 	return copyout(&info32, dst, sizeof(info32));
    473 }
    474 
    475 static int
    476 compat_50_netbsd32_sigtimedwait_fetch_timeout(const void *src, void *dst, size_t size)
    477 {
    478 	struct timespec *ts = dst;
    479 	struct netbsd32_timespec50 ts32;
    480 	int error;
    481 
    482 	error = copyin(src, &ts32, sizeof(ts32));
    483 	if (error)
    484 		return error;
    485 
    486 	netbsd32_to_timespec50(&ts32, ts);
    487 	return 0;
    488 }
    489 
    490 static int
    491 compat_50_netbsd32_sigtimedwait_put_timeout(const void *src, void *dst, size_t size)
    492 {
    493 	const struct timespec *ts = src;
    494 	struct netbsd32_timespec50 ts32;
    495 
    496 	netbsd32_from_timespec50(ts, &ts32);
    497 
    498 	return copyout(&ts32, dst, sizeof(ts32));
    499 }
    500 
    501 int
    502 compat_50_netbsd32___sigtimedwait(struct lwp *l,
    503     const struct compat_50_netbsd32___sigtimedwait_args *uap, register_t *retval)
    504 {
    505 	/* {
    506 		syscallarg(netbsd32_sigsetp_t) set;
    507 		syscallarg(netbsd32_siginfop_t) info;
    508 		syscallarg(netbsd32_timespec50p_t) timeout;
    509 	} */
    510 	struct sys_____sigtimedwait50_args ua;
    511 	int res;
    512 
    513 	NETBSD32TOP_UAP(set, const sigset_t);
    514 	NETBSD32TOP_UAP(info, siginfo_t);
    515 	NETBSD32TOP_UAP(timeout, struct timespec);
    516 
    517 	res = sigtimedwait1(l, &ua, retval,
    518 	    copyin,
    519 	    compat_50_netbsd32_sigtimedwait_put_info,
    520 	    compat_50_netbsd32_sigtimedwait_fetch_timeout,
    521 	    compat_50_netbsd32_sigtimedwait_put_timeout);
    522 	if (!res)
    523 		*retval = 0; /* NetBSD<=5 was not POSIX compliant */
    524 	return res;
    525 }
    526 
    527 int
    528 compat_50_netbsd32_lutimes(struct lwp *l,
    529     const struct compat_50_netbsd32_lutimes_args *uap, register_t *retval)
    530 {
    531 	/* {
    532 		syscallarg(const netbsd32_charp) path;
    533 		syscallarg(const netbsd32_timeval50p_t) tptr;
    534 	} */
    535 	int error;
    536 	struct timeval tv[2], *tvp;
    537 
    538 	error = get_utimes32(SCARG_P32(uap, tptr), tv, &tvp);
    539 	if (error != 0)
    540 		return error;
    541 
    542 	return do_sys_utimes(l, NULL, SCARG_P32(uap, path), NOFOLLOW,
    543 	    tvp, UIO_SYSSPACE);
    544 }
    545 
    546 int
    547 compat_50_netbsd32__lwp_park(struct lwp *l,
    548     const struct compat_50_netbsd32__lwp_park_args *uap, register_t *retval)
    549 {
    550 	/* {
    551 		syscallarg(const netbsd32_timespec50p) ts;
    552 		syscallarg(lwpid_t) unpark;
    553 		syscallarg(netbsd32_voidp) hint;
    554 		syscallarg(netbsd32_voidp) unparkhint;
    555 	} */
    556 	struct timespec ts, *tsp;
    557 	struct netbsd32_timespec50 ts32;
    558 	int error;
    559 
    560 	if (SCARG_P32(uap, ts) == NULL)
    561 		tsp = NULL;
    562 	else {
    563 		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof ts32);
    564 		if (error != 0)
    565 			return error;
    566 		netbsd32_to_timespec50(&ts32, &ts);
    567 		tsp = &ts;
    568 	}
    569 
    570 	if (SCARG(uap, unpark) != 0) {
    571 		error = lwp_unpark(&SCARG(uap, unpark), 1);
    572 		if (error != 0)
    573 			return error;
    574 	}
    575 
    576 	return lwp_park(CLOCK_REALTIME, TIMER_ABSTIME, tsp);
    577 }
    578 
    579 static int
    580 netbsd32_kevent_fetch_timeout(const void *src, void *dest, size_t length)
    581 {
    582 	struct netbsd32_timespec50 ts32;
    583 	int error;
    584 
    585 	KASSERT(length == sizeof(struct timespec50));
    586 
    587 	error = copyin(src, &ts32, sizeof(ts32));
    588 	if (error)
    589 		return error;
    590 	netbsd32_to_timespec50(&ts32, (struct timespec *)dest);
    591 	return 0;
    592 }
    593 
    594 static int
    595 netbsd32_kevent_fetch_changes(void *ctx, const struct kevent *changelist,
    596     struct kevent *changes, size_t index, int n)
    597 {
    598 	const struct netbsd32_kevent *src =
    599 	    (const struct netbsd32_kevent *)changelist;
    600 	struct netbsd32_kevent *kev32, *changes32 = ctx;
    601 	int error, i;
    602 
    603 	error = copyin(src + index, changes32, n * sizeof(*changes32));
    604 	if (error)
    605 		return error;
    606 	for (i = 0, kev32 = changes32; i < n; i++, kev32++, changes++)
    607 		netbsd32_to_kevent(kev32, changes);
    608 	return 0;
    609 }
    610 
    611 static int
    612 netbsd32_kevent_put_events(void *ctx, struct kevent *events,
    613     struct kevent *eventlist, size_t index, int n)
    614 {
    615 	struct netbsd32_kevent *kev32, *events32 = ctx;
    616 	int i;
    617 
    618 	for (i = 0, kev32 = events32; i < n; i++, kev32++, events++)
    619 		netbsd32_from_kevent(events, kev32);
    620 	kev32 = (struct netbsd32_kevent *)eventlist;
    621 	return  copyout(events32, kev32, n * sizeof(*events32));
    622 }
    623 
    624 int
    625 compat_50_netbsd32_kevent(struct lwp *l,
    626     const struct compat_50_netbsd32_kevent_args *uap, register_t *retval)
    627 {
    628 	/* {
    629 		syscallarg(int) fd;
    630 		syscallarg(netbsd32_keventp_t) changelist;
    631 		syscallarg(netbsd32_size_t) nchanges;
    632 		syscallarg(netbsd32_keventp_t) eventlist;
    633 		syscallarg(netbsd32_size_t) nevents;
    634 		syscallarg(netbsd32_timespec50p_t) timeout;
    635 	} */
    636 	int error;
    637 	size_t maxalloc, nchanges, nevents;
    638 	struct kevent_ops netbsd32_kevent_ops = {
    639 		.keo_fetch_timeout = netbsd32_kevent_fetch_timeout,
    640 		.keo_fetch_changes = netbsd32_kevent_fetch_changes,
    641 		.keo_put_events = netbsd32_kevent_put_events,
    642 	};
    643 
    644 	nchanges = SCARG(uap, nchanges);
    645 	nevents = SCARG(uap, nevents);
    646 	maxalloc = KQ_NEVENTS;
    647 
    648 	netbsd32_kevent_ops.keo_private =
    649 	    kmem_alloc(maxalloc * sizeof(struct netbsd32_kevent), KM_SLEEP);
    650 
    651 	error = kevent1(retval, SCARG(uap, fd),
    652 	    NETBSD32PTR64(SCARG(uap, changelist)), nchanges,
    653 	    NETBSD32PTR64(SCARG(uap, eventlist)), nevents,
    654 	    NETBSD32PTR64(SCARG(uap, timeout)), &netbsd32_kevent_ops);
    655 
    656 	kmem_free(netbsd32_kevent_ops.keo_private,
    657 	    maxalloc * sizeof(struct netbsd32_kevent));
    658 	return error;
    659 }
    660 
    661 int
    662 compat_50_netbsd32_pselect(struct lwp *l,
    663     const struct compat_50_netbsd32_pselect_args *uap, register_t *retval)
    664 {
    665 	/* {
    666 		syscallarg(int) nd;
    667 		syscallarg(netbsd32_fd_setp_t) in;
    668 		syscallarg(netbsd32_fd_setp_t) ou;
    669 		syscallarg(netbsd32_fd_setp_t) ex;
    670 		syscallarg(const netbsd32_timespec50p_t) ts;
    671 		syscallarg(const netbsd32_sigsetp_t) mask;
    672 	} */
    673 	int error;
    674 	struct netbsd32_timespec50 ts32;
    675 	struct timespec ats, *ts = NULL;
    676 	sigset_t amask, *mask = NULL;
    677 
    678 	if (SCARG_P32(uap, ts)) {
    679 		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof(ts32));
    680 		if (error != 0)
    681 			return error;
    682 		netbsd32_to_timespec50(&ts32, &ats);
    683 		ts = &ats;
    684 	}
    685 	if (SCARG_P32(uap, mask)) {
    686 		error = copyin(SCARG_P32(uap, mask), &amask, sizeof(amask));
    687 		if (error != 0)
    688 			return error;
    689 		mask = &amask;
    690 	}
    691 
    692 	return selcommon(retval, SCARG(uap, nd), SCARG_P32(uap, in),
    693 	    SCARG_P32(uap, ou), SCARG_P32(uap, ex), ts, mask);
    694 }
    695 
    696 int
    697 compat_50_netbsd32_pollts(struct lwp *l,
    698     const struct compat_50_netbsd32_pollts_args *uap, register_t *retval)
    699 {
    700 	/* {
    701 		syscallarg(struct netbsd32_pollfdp_t) fds;
    702 		syscallarg(u_int) nfds;
    703 		syscallarg(const netbsd32_timespec50p_t) ts;
    704 		syscallarg(const netbsd32_sigsetp_t) mask;
    705 	} */
    706 	int error;
    707 	struct netbsd32_timespec50 ts32;
    708 	struct timespec ats, *ts = NULL;
    709 	sigset_t amask, *mask = NULL;
    710 
    711 	if (SCARG_P32(uap, ts)) {
    712 		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof(ts32));
    713 		if (error != 0)
    714 			return error;
    715 		netbsd32_to_timespec50(&ts32, &ats);
    716 		ts = &ats;
    717 	}
    718 	if (NETBSD32PTR64( SCARG(uap, mask))) {
    719 		error = copyin(SCARG_P32(uap, mask), &amask, sizeof(amask));
    720 		if (error != 0)
    721 			return error;
    722 		mask = &amask;
    723 	}
    724 
    725 	return pollcommon(retval, SCARG_P32(uap, fds),
    726 	    SCARG(uap, nfds), ts, mask);
    727 }
    728 
    729 int
    730 compat_50_netbsd32___stat30(struct lwp *l,
    731     const struct compat_50_netbsd32___stat30_args *uap, register_t *retval)
    732 {
    733 	/* {
    734 		syscallarg(const netbsd32_charp) path;
    735 		syscallarg(netbsd32_stat50p_t) ub;
    736 	} */
    737 	struct netbsd32_stat50 sb32;
    738 	struct stat sb;
    739 	int error;
    740 	const char *path;
    741 
    742 	path = SCARG_P32(uap, path);
    743 
    744 	error = do_sys_stat(path, FOLLOW, &sb);
    745 	if (error)
    746 		return error;
    747 	netbsd32_from___stat50(&sb, &sb32);
    748 	error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
    749 	return error;
    750 }
    751 
    752 int
    753 compat_50_netbsd32___fstat30(struct lwp *l,
    754     const struct compat_50_netbsd32___fstat30_args *uap, register_t *retval)
    755 {
    756 	/* {
    757 		syscallarg(int) fd;
    758 		syscallarg(netbsd32_stat50p_t) sb;
    759 	} */
    760 	struct netbsd32_stat50 sb32;
    761 	struct stat ub;
    762 	int error;
    763 
    764 	error = do_sys_fstat(SCARG(uap, fd), &ub);
    765 	if (error == 0) {
    766 		netbsd32_from___stat50(&ub, &sb32);
    767 		error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32));
    768 	}
    769 	return error;
    770 }
    771 
    772 int
    773 compat_50_netbsd32___lstat30(struct lwp *l,
    774     const struct compat_50_netbsd32___lstat30_args *uap, register_t *retval)
    775 {
    776 	/* {
    777 		syscallarg(const netbsd32_charp) path;
    778 		syscallarg(netbsd32_stat50p_t) ub;
    779 	} */
    780 	struct netbsd32_stat50 sb32;
    781 	struct stat sb;
    782 	int error;
    783 	const char *path;
    784 
    785 	path = SCARG_P32(uap, path);
    786 
    787 	error = do_sys_stat(path, NOFOLLOW, &sb);
    788 	if (error)
    789 		return error;
    790 	netbsd32_from___stat50(&sb, &sb32);
    791 	error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
    792 	return error;
    793 }
    794 
    795 int
    796 compat_50_netbsd32___fhstat40(struct lwp *l, const struct compat_50_netbsd32___fhstat40_args *uap, register_t *retval)
    797 {
    798 	/* {
    799 		syscallarg(const netbsd32_pointer_t) fhp;
    800 		syscallarg(netbsd32_size_t) fh_size;
    801 		syscallarg(netbsd32_stat50p_t) sb;
    802 	} */
    803 	struct stat sb;
    804 	struct netbsd32_stat50 sb32;
    805 	int error;
    806 
    807 	error = do_fhstat(l, SCARG_P32(uap, fhp), SCARG(uap, fh_size), &sb);
    808 	if (error == 0) {
    809 		netbsd32_from___stat50(&sb, &sb32);
    810 		error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32));
    811 	}
    812 	return error;
    813 }
    814 
    815 int
    816 compat_50_netbsd32_wait4(struct lwp *l, const struct compat_50_netbsd32_wait4_args *uap, register_t *retval)
    817 {
    818 	/* {
    819 		syscallarg(int) pid;
    820 		syscallarg(netbsd32_intp) status;
    821 		syscallarg(int) options;
    822 		syscallarg(netbsd32_rusage50p_t) rusage;
    823 	} */
    824 	int error, status, pid = SCARG(uap, pid);
    825 	struct netbsd32_rusage50 ru32;
    826 	struct rusage ru;
    827 
    828 	error = do_sys_wait(&pid, &status, SCARG(uap, options),
    829 	    SCARG_P32(uap, rusage) != NULL ? &ru : NULL);
    830 
    831 	retval[0] = pid;
    832 	if (pid == 0)
    833 		return error;
    834 
    835 	if (SCARG_P32(uap, rusage)) {
    836 		netbsd32_from_rusage50(&ru, &ru32);
    837 		error = copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
    838 	}
    839 
    840 	if (error == 0 && SCARG_P32(uap, status))
    841 		error = copyout(&status, SCARG_P32(uap, status), sizeof(status));
    842 
    843 	return error;
    844 }
    845 
    846 
    847 int
    848 compat_50_netbsd32_getrusage(struct lwp *l, const struct compat_50_netbsd32_getrusage_args *uap, register_t *retval)
    849 {
    850 	/* {
    851 		syscallarg(int) who;
    852 		syscallarg(netbsd32_rusage50p_t) rusage;
    853 	} */
    854 	int error;
    855 	struct proc *p = l->l_proc;
    856 	struct rusage ru;
    857 	struct netbsd32_rusage50 ru32;
    858 
    859 	error = getrusage1(p, SCARG(uap, who), &ru);
    860 	if (error != 0)
    861 		return error;
    862 
    863 	netbsd32_from_rusage50(&ru, &ru32);
    864 	return copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
    865 }
    866 
    867 int
    868 compat_50_netbsd32_setitimer(struct lwp *l,
    869     const struct compat_50_netbsd32_setitimer_args *uap, register_t *retval)
    870 {
    871 	/* {
    872 		syscallarg(int) which;
    873 		syscallarg(const netbsd32_itimerval50p_t) itv;
    874 		syscallarg(netbsd32_itimerval50p_t) oitv;
    875 	} */
    876 	struct proc *p = l->l_proc;
    877 	struct netbsd32_itimerval50 s32it, *itv32;
    878 	int which = SCARG(uap, which);
    879 	struct compat_50_netbsd32_getitimer_args getargs;
    880 	struct itimerval aitv;
    881 	int error;
    882 
    883 	itv32 = SCARG_P32(uap, itv);
    884 	if (itv32) {
    885 		if ((error = copyin(itv32, &s32it, sizeof(s32it))))
    886 			return error;
    887 		netbsd32_to_itimerval50(&s32it, &aitv);
    888 	}
    889 	if (SCARG_P32(uap, oitv) != 0) {
    890 		SCARG(&getargs, which) = which;
    891 		SCARG(&getargs, itv) = SCARG(uap, oitv);
    892 		if ((error = compat_50_netbsd32_getitimer(l, &getargs, retval)) != 0)
    893 			return error;
    894 	}
    895 	if (itv32 == 0)
    896 		return 0;
    897 
    898 	return dosetitimer(p, which, &aitv);
    899 }
    900 
    901 int
    902 compat_50_netbsd32_getitimer(struct lwp *l, const struct compat_50_netbsd32_getitimer_args *uap, register_t *retval)
    903 {
    904 	/* {
    905 		syscallarg(int) which;
    906 		syscallarg(netbsd32_itimerval50p_t) itv;
    907 	} */
    908 	struct proc *p = l->l_proc;
    909 	struct netbsd32_itimerval50 s32it;
    910 	struct itimerval aitv;
    911 	int error;
    912 
    913 	error = dogetitimer(p, SCARG(uap, which), &aitv);
    914 	if (error)
    915 		return error;
    916 
    917 	netbsd32_from_itimerval50(&aitv, &s32it);
    918 	return copyout(&s32it, SCARG_P32(uap, itv), sizeof(s32it));
    919 }
    920 
    921 #ifdef NTP
    922 int
    923 compat_50_netbsd32_ntp_gettime(struct lwp *l,
    924     const struct compat_50_netbsd32_ntp_gettime_args *uap, register_t *retval)
    925 {
    926 	/* {
    927 		syscallarg(netbsd32_ntptimeval50p_t) ntvp;
    928 	} */
    929 	struct netbsd32_ntptimeval50 ntv32;
    930 	struct ntptimeval ntv;
    931 	int error = 0;
    932 
    933 	if (vec_ntp_gettime == NULL)
    934 		return EINVAL;
    935 
    936 	if (SCARG_P32(uap, ntvp)) {
    937 		(*vec_ntp_gettime)(&ntv);
    938 
    939 		memset(&ntv32, 0, sizeof(ntv32));
    940 		ntv32.time.tv_sec = (int32_t)ntv.time.tv_sec;
    941 		ntv32.time.tv_nsec = ntv.time.tv_nsec;
    942 		ntv32.maxerror = (netbsd32_long)ntv.maxerror;
    943 		ntv32.esterror = (netbsd32_long)ntv.esterror;
    944 		ntv32.tai = (netbsd32_long)ntv.tai;
    945 		ntv32.time_state = ntv.time_state;
    946 		error = copyout(&ntv32, SCARG_P32(uap, ntvp), sizeof(ntv32));
    947 	}
    948 	if (!error) {
    949 		*retval = (*vec_ntp_timestatus)();
    950 	}
    951 
    952 	return error;
    953 }
    954 #endif
    955 
    956 static struct syscall_package compat_netbsd32_50_syscalls[] = {
    957 	{ NETBSD32_SYS_compat_50_netbsd32_mknod, 0,
    958 	    (sy_call_t *)compat_50_netbsd32_mknod },
    959 	{ NETBSD32_SYS_compat_50_netbsd32_select, 0,
    960 	    (sy_call_t *)compat_50_netbsd32_select },
    961 	{ NETBSD32_SYS_compat_50_netbsd32_gettimeofday, 0,
    962 	    (sy_call_t *)compat_50_netbsd32_gettimeofday },
    963 	{ NETBSD32_SYS_compat_50_netbsd32_settimeofday, 0,
    964 	    (sy_call_t *)compat_50_netbsd32_settimeofday },
    965 	{ NETBSD32_SYS_compat_50_netbsd32_utimes, 0,
    966 	    (sy_call_t *)compat_50_netbsd32_utimes },
    967 	{ NETBSD32_SYS_compat_50_netbsd32_futimes, 0,
    968 	    (sy_call_t *)compat_50_netbsd32_futimes },
    969 	{ NETBSD32_SYS_compat_50_netbsd32_adjtime, 0,
    970 	    (sy_call_t *)compat_50_netbsd32_adjtime },
    971 	{ NETBSD32_SYS_compat_50_netbsd32_clock_gettime, 0,
    972 	    (sy_call_t *)compat_50_netbsd32_clock_gettime },
    973 	{ NETBSD32_SYS_compat_50_netbsd32_clock_settime, 0,
    974 	    (sy_call_t *)compat_50_netbsd32_clock_settime },
    975 	{ NETBSD32_SYS_compat_50_netbsd32_clock_getres, 0,
    976 	    (sy_call_t *)compat_50_netbsd32_clock_getres },
    977 	{ NETBSD32_SYS_compat_50_netbsd32_timer_settime, 0,
    978 	    (sy_call_t *)compat_50_netbsd32_timer_settime },
    979 	{ NETBSD32_SYS_compat_50_netbsd32_timer_gettime, 0,
    980 	    (sy_call_t *)compat_50_netbsd32_timer_gettime },
    981 	{ NETBSD32_SYS_compat_50_netbsd32_nanosleep, 0,
    982 	    (sy_call_t *)compat_50_netbsd32_nanosleep },
    983 	{ NETBSD32_SYS_compat_50_netbsd32___sigtimedwait, 0,
    984 	    (sy_call_t *)compat_50_netbsd32___sigtimedwait },
    985 	{ NETBSD32_SYS_compat_50_netbsd32_lutimes, 0,
    986 	    (sy_call_t *)compat_50_netbsd32_lutimes },
    987 	{ NETBSD32_SYS_compat_50_netbsd32__lwp_park, 0,
    988 	    (sy_call_t *)compat_50_netbsd32__lwp_park },
    989 	{ NETBSD32_SYS_compat_50_netbsd32_kevent, 0,
    990 	    (sy_call_t *)compat_50_netbsd32_kevent },
    991 	{ NETBSD32_SYS_compat_50_netbsd32_pselect, 0,
    992 	    (sy_call_t *)compat_50_netbsd32_pselect },
    993 	{ NETBSD32_SYS_compat_50_netbsd32_pollts, 0,
    994 	    (sy_call_t *)compat_50_netbsd32_pollts },
    995 	{ NETBSD32_SYS_compat_50_netbsd32___stat30, 0,
    996 	    (sy_call_t *)compat_50_netbsd32___stat30 },
    997 	{ NETBSD32_SYS_compat_50_netbsd32___fstat30, 0,
    998 	    (sy_call_t *)compat_50_netbsd32___fstat30 },
    999 	{ NETBSD32_SYS_compat_50_netbsd32___lstat30, 0,
   1000 	    (sy_call_t *)compat_50_netbsd32___lstat30 },
   1001 	{ NETBSD32_SYS_compat_50_netbsd32___fhstat40, 0,
   1002 	    (sy_call_t *)compat_50_netbsd32___fhstat40 },
   1003 	{ NETBSD32_SYS_compat_50_netbsd32_wait4, 0,
   1004 	    (sy_call_t *)compat_50_netbsd32_wait4 },
   1005 	{ NETBSD32_SYS_compat_50_netbsd32_getrusage, 0,
   1006 	    (sy_call_t *)compat_50_netbsd32_getrusage },
   1007 	{ NETBSD32_SYS_compat_50_netbsd32_setitimer, 0,
   1008 	    (sy_call_t *)compat_50_netbsd32_setitimer },
   1009 	{ NETBSD32_SYS_compat_50_netbsd32_getitimer, 0,
   1010 	    (sy_call_t *)compat_50_netbsd32_getitimer },
   1011 #ifdef NTP
   1012 	{ NETBSD32_SYS_compat_50_netbsd32_ntp_gettime, 0,
   1013 	    (sy_call_t *)compat_50_netbsd32_ntp_gettime },
   1014 #endif
   1015 	{ 0, 0, NULL }
   1016 };
   1017 
   1018 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_50, "compat_netbsd32_60,compat_50");
   1019 
   1020 static int
   1021 compat_netbsd32_50_modcmd(modcmd_t cmd, void *arg)
   1022 {
   1023 	int ret;
   1024 
   1025 	switch (cmd) {
   1026 	case MODULE_CMD_INIT:
   1027                 ret = syscall_establish(&emul_netbsd32,
   1028 		    compat_netbsd32_50_syscalls);
   1029 		if (ret == 0)
   1030 			MODULE_HOOK_SET(rnd_ioctl32_50_hook,
   1031 			    compat32_50_rnd_ioctl);
   1032 		return ret;
   1033 
   1034 	case MODULE_CMD_FINI:
   1035                 ret = syscall_disestablish(&emul_netbsd32,
   1036 		    compat_netbsd32_50_syscalls);
   1037 		if (ret == 0)
   1038 			MODULE_HOOK_UNSET(rnd_ioctl32_50_hook);
   1039 		return ret;
   1040 
   1041 	default:
   1042 		return ENOTTY;
   1043 	}
   1044 }
   1045 #endif /* COMPAT_50 */
   1046