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netbsd32_compat_50.c revision 1.50
      1 /*	$NetBSD: netbsd32_compat_50.c,v 1.50 2021/01/19 03:20:13 simonb 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 1.50 2021/01/19 03:20:13 simonb 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/ktrace.h>
     51 #include <sys/eventvar.h>
     52 #include <sys/resourcevar.h>
     53 #include <sys/vnode.h>
     54 #include <sys/file.h>
     55 #include <sys/filedesc.h>
     56 #include <sys/poll.h>
     57 #include <sys/namei.h>
     58 #include <sys/statvfs.h>
     59 #include <sys/syscallargs.h>
     60 #include <sys/syscallvar.h>
     61 #include <sys/proc.h>
     62 #include <sys/dirent.h>
     63 #include <sys/kauth.h>
     64 #include <sys/vfs_syscalls.h>
     65 #include <sys/compat_stub.h>
     66 #include <sys/module_hook.h>
     67 
     68 #include <compat/netbsd32/netbsd32.h>
     69 #include <compat/netbsd32/netbsd32_syscall.h>
     70 #include <compat/netbsd32/netbsd32_syscallargs.h>
     71 #include <compat/netbsd32/netbsd32_conv.h>
     72 #include <compat/sys/mount.h>
     73 #include <compat/sys/time.h>
     74 #include <compat/sys/rnd.h>
     75 
     76 #if defined(COMPAT_50)
     77 
     78 /*
     79  * Common routine to set access and modification times given a vnode.
     80  */
     81 static int
     82 get_utimes32(const netbsd32_timeval50p_t *tptr, struct timeval *tv,
     83     struct timeval **tvp)
     84 {
     85 	int error;
     86 	struct netbsd32_timeval50 tv32[2];
     87 
     88 	if (tptr == NULL) {
     89 		*tvp = NULL;
     90 		return 0;
     91 	}
     92 
     93 	error = copyin(tptr, tv32, sizeof(tv32));
     94 	if (error)
     95 		return error;
     96 	netbsd32_to_timeval50(&tv32[0], &tv[0]);
     97 	netbsd32_to_timeval50(&tv32[1], &tv[1]);
     98 
     99 	*tvp = tv;
    100 	return 0;
    101 }
    102 
    103 int
    104 compat_50_netbsd32_mknod(struct lwp *l,
    105     const struct compat_50_netbsd32_mknod_args *uap, register_t *retval)
    106 {
    107 	/* {
    108 		syscallarg(netbsd32_charp) path;
    109 		syscallarg(mode_t) mode;
    110 		syscallarg(uint32_t) dev;
    111 	} */
    112 	return do_sys_mknod(l, SCARG_P32(uap, path), SCARG(uap, mode),
    113 	    SCARG(uap, dev), UIO_USERSPACE);
    114 }
    115 
    116 int
    117 compat_50_netbsd32_select(struct lwp *l,
    118     const struct compat_50_netbsd32_select_args *uap, register_t *retval)
    119 {
    120 	/* {
    121 		syscallarg(int) nd;
    122 		syscallarg(netbsd32_fd_setp_t) in;
    123 		syscallarg(netbsd32_fd_setp_t) ou;
    124 		syscallarg(netbsd32_fd_setp_t) ex;
    125 		syscallarg(netbsd32_timeval50p_t) tv;
    126 	} */
    127 	int error;
    128 	struct netbsd32_timeval50 tv32;
    129 	struct timespec ats, *ts = NULL;
    130 
    131 	if (SCARG_P32(uap, tv)) {
    132 		error = copyin(SCARG_P32(uap, tv), &tv32, sizeof(tv32));
    133 		if (error != 0)
    134 			return error;
    135 
    136 		if (tv32.tv_usec < 0 || tv32.tv_usec >= 1000000)
    137 			return EINVAL;
    138 
    139 		ats.tv_sec = tv32.tv_sec;
    140 		ats.tv_nsec = tv32.tv_usec * 1000;
    141 		ts = &ats;
    142 	}
    143 
    144 	return selcommon(retval, SCARG(uap, nd), SCARG_P32(uap, in),
    145 	    SCARG_P32(uap, ou), SCARG_P32(uap, ex), ts, NULL);
    146 }
    147 
    148 int
    149 compat_50_netbsd32_gettimeofday(struct lwp *l,
    150     const struct compat_50_netbsd32_gettimeofday_args *uap, register_t *retval)
    151 {
    152 	/* {
    153 		syscallarg(netbsd32_timeval50p_t) tp;
    154 		syscallarg(netbsd32_timezonep_t) tzp;
    155 	} */
    156 	struct timeval atv;
    157 	struct netbsd32_timeval50 tv32;
    158 	int error = 0;
    159 	struct netbsd32_timezone tzfake;
    160 
    161 	if (SCARG_P32(uap, tp)) {
    162 		microtime(&atv);
    163 		netbsd32_from_timeval50(&atv, &tv32);
    164 		error = copyout(&tv32, SCARG_P32(uap, tp), sizeof(tv32));
    165 		if (error)
    166 			return error;
    167 	}
    168 	if (SCARG_P32(uap, tzp)) {
    169 		/*
    170 		 * NetBSD has no kernel notion of time zone, so we just
    171 		 * fake up a timezone struct and return it if demanded.
    172 		 */
    173 		tzfake.tz_minuteswest = 0;
    174 		tzfake.tz_dsttime = 0;
    175 		error = copyout(&tzfake, SCARG_P32(uap, tzp), sizeof(tzfake));
    176 	}
    177 	return error;
    178 }
    179 
    180 int
    181 compat_50_netbsd32_settimeofday(struct lwp *l,
    182     const struct compat_50_netbsd32_settimeofday_args *uap, register_t *retval)
    183 {
    184 	/* {
    185 		syscallarg(const netbsd32_timeval50p_t) tv;
    186 		syscallarg(const netbsd32_timezonep_t) tzp;
    187 	} */
    188 	struct netbsd32_timeval50 atv32;
    189 	struct timeval atv;
    190 	struct timespec ats;
    191 	int error;
    192 	struct proc *p = l->l_proc;
    193 
    194 	/* Verify all parameters before changing time. */
    195 
    196 	/*
    197 	 * NetBSD has no kernel notion of time zone, and only an
    198 	 * obsolete program would try to set it, so we log a warning.
    199 	 */
    200 	if (SCARG_P32(uap, tzp))
    201 		printf("pid %d attempted to set the "
    202 		    "(obsolete) kernel time zone\n", p->p_pid);
    203 
    204 	if (SCARG_P32(uap, tv) == 0)
    205 		return 0;
    206 
    207 	if ((error = copyin(SCARG_P32(uap, tv), &atv32, sizeof(atv32))) != 0)
    208 		return error;
    209 
    210 	netbsd32_to_timeval50(&atv32, &atv);
    211 
    212 	if (atv.tv_usec < 0 || atv.tv_usec >= 1000000)
    213 		return EINVAL;
    214 
    215 	TIMEVAL_TO_TIMESPEC(&atv, &ats);
    216 	return settime(p, &ats);
    217 }
    218 
    219 int
    220 compat_50_netbsd32_utimes(struct lwp *l,
    221     const struct compat_50_netbsd32_utimes_args *uap, register_t *retval)
    222 {
    223 	/* {
    224 		syscallarg(const netbsd32_charp) path;
    225 		syscallarg(const netbsd32_timeval50p_t) tptr;
    226 	} */
    227 	int error;
    228 	struct timeval tv[2], *tvp;
    229 
    230 	error = get_utimes32(SCARG_P32(uap, tptr), tv, &tvp);
    231 	if (error != 0)
    232 		return error;
    233 
    234 	return do_sys_utimes(l, NULL, SCARG_P32(uap, path), FOLLOW,
    235 	    tvp, UIO_SYSSPACE);
    236 }
    237 
    238 int
    239 compat_50_netbsd32_adjtime(struct lwp *l,
    240     const struct compat_50_netbsd32_adjtime_args *uap, register_t *retval)
    241 {
    242 	/* {
    243 		syscallarg(const netbsd32_timeval50p_t) delta;
    244 		syscallarg(netbsd32_timeval50p_t) olddelta;
    245 	} */
    246 	struct netbsd32_timeval50 atv;
    247 	int error;
    248 
    249 	extern int time_adjusted;     /* in kern_ntptime.c */
    250 	extern int64_t time_adjtime;  /* in kern_ntptime.c */
    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 		mutex_spin_enter(&timecounter_lock);
    259 		atv.tv_sec = time_adjtime / 1000000;
    260 		atv.tv_usec = time_adjtime % 1000000;
    261 		if (atv.tv_usec < 0) {
    262 			atv.tv_usec += 1000000;
    263 			atv.tv_sec--;
    264 		}
    265 		mutex_spin_exit(&timecounter_lock);
    266 
    267 		error = copyout(&atv, SCARG_P32(uap, olddelta), sizeof(atv));
    268 		if (error)
    269 			return error;
    270 	}
    271 
    272 	if (SCARG_P32(uap, delta)) {
    273 		error = copyin(SCARG_P32(uap, delta), &atv, sizeof(atv));
    274 		if (error)
    275 			return error;
    276 
    277 		mutex_spin_enter(&timecounter_lock);
    278 		time_adjtime = (int64_t)atv.tv_sec * 1000000 + atv.tv_usec;
    279 		if (time_adjtime)
    280 			/* We need to save the system time during shutdown */
    281 			time_adjusted |= 1;
    282 		mutex_spin_exit(&timecounter_lock);
    283 	}
    284 
    285 	return 0;
    286 }
    287 
    288 int
    289 compat_50_netbsd32_futimes(struct lwp *l,
    290     const struct compat_50_netbsd32_futimes_args *uap, register_t *retval)
    291 {
    292 	/* {
    293 		syscallarg(int) fd;
    294 		syscallarg(const netbsd32_timeval50p_t) tptr;
    295 	} */
    296 	int error;
    297 	file_t *fp;
    298 	struct timeval tv[2], *tvp;
    299 
    300 	error = get_utimes32(SCARG_P32(uap, tptr), tv, &tvp);
    301 	if (error != 0)
    302 		return error;
    303 
    304 	/* fd_getvnode() will use the descriptor for us */
    305 	if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0)
    306 		return error;
    307 
    308 	error = do_sys_utimes(l, fp->f_vnode, NULL, 0, tvp, UIO_SYSSPACE);
    309 
    310 	fd_putfile(SCARG(uap, fd));
    311 	return error;
    312 }
    313 
    314 int
    315 compat_50_netbsd32_clock_gettime(struct lwp *l,
    316     const struct compat_50_netbsd32_clock_gettime_args *uap, register_t *retval)
    317 {
    318 	/* {
    319 		syscallarg(netbsd32_clockid_t) clock_id;
    320 		syscallarg(netbsd32_timespec50p_t) tp;
    321 	} */
    322 	int error;
    323 	struct timespec ats;
    324 	struct netbsd32_timespec50 ts32;
    325 
    326 	error = clock_gettime1(SCARG(uap, clock_id), &ats);
    327 	if (error != 0)
    328 		return error;
    329 
    330 	netbsd32_from_timespec50(&ats, &ts32);
    331 	return copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32));
    332 }
    333 
    334 int
    335 compat_50_netbsd32_clock_settime(struct lwp *l,
    336     const struct compat_50_netbsd32_clock_settime_args *uap, register_t *retval)
    337 {
    338 	/* {
    339 		syscallarg(netbsd32_clockid_t) clock_id;
    340 		syscallarg(const netbsd32_timespec50p_t) tp;
    341 	} */
    342 	struct netbsd32_timespec50 ts32;
    343 	struct timespec ats;
    344 	int error;
    345 
    346 	if ((error = copyin(SCARG_P32(uap, tp), &ts32, sizeof(ts32))) != 0)
    347 		return error;
    348 
    349 	netbsd32_to_timespec50(&ts32, &ats);
    350 	return clock_settime1(l->l_proc, SCARG(uap, clock_id), &ats, true);
    351 }
    352 
    353 int
    354 compat_50_netbsd32_clock_getres(struct lwp *l,
    355     const struct compat_50_netbsd32_clock_getres_args *uap, register_t *retval)
    356 {
    357 	/* {
    358 		syscallarg(netbsd32_clockid_t) clock_id;
    359 		syscallarg(netbsd32_timespec50p_t) tp;
    360 	} */
    361 	struct netbsd32_timespec50 ts32;
    362 	struct timespec ts;
    363 	int error;
    364 
    365 	error = clock_getres1(SCARG(uap, clock_id), &ts);
    366 	if (error != 0)
    367 		return error;
    368 
    369 	if (SCARG_P32(uap, tp)) {
    370 		netbsd32_from_timespec50(&ts, &ts32);
    371 		error = copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32));
    372 	}
    373 
    374 	return error;
    375 }
    376 
    377 int
    378 compat_50_netbsd32_timer_settime(struct lwp *l,
    379     const struct compat_50_netbsd32_timer_settime_args *uap, register_t *retval)
    380 {
    381 	/* {
    382 		syscallarg(netbsd32_timer_t) timerid;
    383 		syscallarg(int) flags;
    384 		syscallarg(const netbsd32_itimerspec50p_t) value;
    385 		syscallarg(netbsd32_itimerspec50p_t) ovalue;
    386 	} */
    387 	int error;
    388 	struct itimerspec value, ovalue, *ovp = NULL;
    389 	struct netbsd32_itimerspec50 its32;
    390 
    391 	if ((error = copyin(SCARG_P32(uap, value), &its32, sizeof(its32))) != 0)
    392 		return error;
    393 	netbsd32_to_timespec50(&its32.it_interval, &value.it_interval);
    394 	netbsd32_to_timespec50(&its32.it_value, &value.it_value);
    395 
    396 	if (SCARG_P32(uap, ovalue))
    397 		ovp = &ovalue;
    398 
    399 	if ((error = dotimer_settime(SCARG(uap, timerid), &value, ovp,
    400 	    SCARG(uap, flags), l->l_proc)) != 0)
    401 		return error;
    402 
    403 	if (ovp) {
    404 		netbsd32_from_timespec50(&ovp->it_interval, &its32.it_interval);
    405 		netbsd32_from_timespec50(&ovp->it_value, &its32.it_value);
    406 		return copyout(&its32, SCARG_P32(uap, ovalue), sizeof(its32));
    407 	}
    408 	return 0;
    409 }
    410 
    411 int
    412 compat_50_netbsd32_timer_gettime(struct lwp *l, const struct compat_50_netbsd32_timer_gettime_args *uap, register_t *retval)
    413 {
    414 	/* {
    415 		syscallarg(netbsd32_timer_t) timerid;
    416 		syscallarg(netbsd32_itimerspec50p_t) value;
    417 	} */
    418 	int error;
    419 	struct itimerspec its;
    420 	struct netbsd32_itimerspec50 its32;
    421 
    422 	if ((error = dotimer_gettime(SCARG(uap, timerid), l->l_proc,
    423 	    &its)) != 0)
    424 		return error;
    425 
    426 	netbsd32_from_timespec50(&its.it_interval, &its32.it_interval);
    427 	netbsd32_from_timespec50(&its.it_value, &its32.it_value);
    428 
    429 	return copyout(&its32, SCARG_P32(uap, value), sizeof(its32));
    430 }
    431 
    432 int
    433 compat_50_netbsd32_nanosleep(struct lwp *l,
    434     const struct compat_50_netbsd32_nanosleep_args *uap, register_t *retval)
    435 {
    436 	/* {
    437 		syscallarg(const netbsd32_timespec50p_t) rqtp;
    438 		syscallarg(netbsd32_timespecp_t) rmtp;
    439 	} */
    440 	struct netbsd32_timespec50 ts32;
    441 	struct timespec rqt, rmt;
    442 	int error, error1;
    443 
    444 	error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32));
    445 	if (error)
    446 		return error;
    447 	netbsd32_to_timespec50(&ts32, &rqt);
    448 
    449 	error = nanosleep1(l, CLOCK_MONOTONIC, 0, &rqt,
    450 	    SCARG_P32(uap, rmtp) ? &rmt : NULL);
    451 	if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR))
    452 		return error;
    453 
    454 	netbsd32_from_timespec50(&rmt, &ts32);
    455 	error1 = copyout(&ts32, SCARG_P32(uap,rmtp), sizeof(ts32));
    456 	return error1 ? error1 : error;
    457 }
    458 
    459 static int
    460 compat_50_netbsd32_sigtimedwait_put_info(const void *src, void *dst, size_t size)
    461 {
    462 	const siginfo_t *info = src;
    463 	siginfo32_t info32;
    464 
    465 	netbsd32_si_to_si32(&info32, info);
    466 
    467 	return copyout(&info32, dst, sizeof(info32));
    468 }
    469 
    470 static int
    471 compat_50_netbsd32_sigtimedwait_fetch_timeout(const void *src, void *dst, size_t size)
    472 {
    473 	struct timespec *ts = dst;
    474 	struct netbsd32_timespec50 ts32;
    475 	int error;
    476 
    477 	error = copyin(src, &ts32, sizeof(ts32));
    478 	if (error)
    479 		return error;
    480 
    481 	netbsd32_to_timespec50(&ts32, ts);
    482 	return 0;
    483 }
    484 
    485 static int
    486 compat_50_netbsd32_sigtimedwait_put_timeout(const void *src, void *dst, size_t size)
    487 {
    488 	const struct timespec *ts = src;
    489 	struct netbsd32_timespec50 ts32;
    490 
    491 	netbsd32_from_timespec50(ts, &ts32);
    492 
    493 	return copyout(&ts32, dst, sizeof(ts32));
    494 }
    495 
    496 int
    497 compat_50_netbsd32___sigtimedwait(struct lwp *l,
    498     const struct compat_50_netbsd32___sigtimedwait_args *uap, register_t *retval)
    499 {
    500 	/* {
    501 		syscallarg(netbsd32_sigsetp_t) set;
    502 		syscallarg(netbsd32_siginfop_t) info;
    503 		syscallarg(netbsd32_timespec50p_t) timeout;
    504 	} */
    505 	struct sys_____sigtimedwait50_args ua;
    506 	int res;
    507 
    508 	NETBSD32TOP_UAP(set, const sigset_t);
    509 	NETBSD32TOP_UAP(info, siginfo_t);
    510 	NETBSD32TOP_UAP(timeout, struct timespec);
    511 
    512 	res = sigtimedwait1(l, &ua, retval,
    513 	    copyin,
    514 	    compat_50_netbsd32_sigtimedwait_put_info,
    515 	    compat_50_netbsd32_sigtimedwait_fetch_timeout,
    516 	    compat_50_netbsd32_sigtimedwait_put_timeout);
    517 	if (!res)
    518 		*retval = 0; /* NetBSD<=5 was not POSIX compliant */
    519 	return res;
    520 }
    521 
    522 int
    523 compat_50_netbsd32_lutimes(struct lwp *l,
    524     const struct compat_50_netbsd32_lutimes_args *uap, register_t *retval)
    525 {
    526 	/* {
    527 		syscallarg(const netbsd32_charp) path;
    528 		syscallarg(const netbsd32_timeval50p_t) tptr;
    529 	} */
    530 	int error;
    531 	struct timeval tv[2], *tvp;
    532 
    533 	error = get_utimes32(SCARG_P32(uap, tptr), tv, &tvp);
    534 	if (error != 0)
    535 		return error;
    536 
    537 	return do_sys_utimes(l, NULL, SCARG_P32(uap, path), NOFOLLOW,
    538 	    tvp, UIO_SYSSPACE);
    539 }
    540 
    541 int
    542 compat_50_netbsd32__lwp_park(struct lwp *l,
    543     const struct compat_50_netbsd32__lwp_park_args *uap, register_t *retval)
    544 {
    545 	/* {
    546 		syscallarg(const netbsd32_timespec50p) ts;
    547 		syscallarg(lwpid_t) unpark;
    548 		syscallarg(netbsd32_voidp) hint;
    549 		syscallarg(netbsd32_voidp) unparkhint;
    550 	} */
    551 	struct timespec ts, *tsp;
    552 	struct netbsd32_timespec50 ts32;
    553 	int error;
    554 
    555 	if (SCARG_P32(uap, ts) == NULL)
    556 		tsp = NULL;
    557 	else {
    558 		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof ts32);
    559 		if (error != 0)
    560 			return error;
    561 		netbsd32_to_timespec50(&ts32, &ts);
    562 		tsp = &ts;
    563 	}
    564 
    565 	if (SCARG(uap, unpark) != 0) {
    566 		error = lwp_unpark(&SCARG(uap, unpark), 1);
    567 		if (error != 0)
    568 			return error;
    569 	}
    570 
    571 	return lwp_park(CLOCK_REALTIME, TIMER_ABSTIME, tsp);
    572 }
    573 
    574 static int
    575 netbsd32_kevent_fetch_timeout(const void *src, void *dest, size_t length)
    576 {
    577 	struct netbsd32_timespec50 ts32;
    578 	int error;
    579 
    580 	KASSERT(length == sizeof(struct timespec50));
    581 
    582 	error = copyin(src, &ts32, sizeof(ts32));
    583 	if (error)
    584 		return error;
    585 	netbsd32_to_timespec50(&ts32, (struct timespec *)dest);
    586 	return 0;
    587 }
    588 
    589 static int
    590 netbsd32_kevent_fetch_changes(void *ctx, const struct kevent *changelist,
    591     struct kevent *changes, size_t index, int n)
    592 {
    593 	const struct netbsd32_kevent *src =
    594 	    (const struct netbsd32_kevent *)changelist;
    595 	struct netbsd32_kevent *kev32, *changes32 = ctx;
    596 	int error, i;
    597 
    598 	error = copyin(src + index, changes32, n * sizeof(*changes32));
    599 	if (error)
    600 		return error;
    601 	for (i = 0, kev32 = changes32; i < n; i++, kev32++, changes++)
    602 		netbsd32_to_kevent(kev32, changes);
    603 	return 0;
    604 }
    605 
    606 static int
    607 netbsd32_kevent_put_events(void *ctx, struct kevent *events,
    608     struct kevent *eventlist, size_t index, int n)
    609 {
    610 	struct netbsd32_kevent *kev32, *events32 = ctx;
    611 	int i;
    612 
    613 	for (i = 0, kev32 = events32; i < n; i++, kev32++, events++)
    614 		netbsd32_from_kevent(events, kev32);
    615 	kev32 = (struct netbsd32_kevent *)eventlist;
    616 	return  copyout(events32, kev32, n * sizeof(*events32));
    617 }
    618 
    619 int
    620 compat_50_netbsd32_kevent(struct lwp *l,
    621     const struct compat_50_netbsd32_kevent_args *uap, register_t *retval)
    622 {
    623 	/* {
    624 		syscallarg(int) fd;
    625 		syscallarg(netbsd32_keventp_t) changelist;
    626 		syscallarg(netbsd32_size_t) nchanges;
    627 		syscallarg(netbsd32_keventp_t) eventlist;
    628 		syscallarg(netbsd32_size_t) nevents;
    629 		syscallarg(netbsd32_timespec50p_t) timeout;
    630 	} */
    631 	int error;
    632 	size_t maxalloc, nchanges, nevents;
    633 	struct kevent_ops netbsd32_kevent_ops = {
    634 		.keo_fetch_timeout = netbsd32_kevent_fetch_timeout,
    635 		.keo_fetch_changes = netbsd32_kevent_fetch_changes,
    636 		.keo_put_events = netbsd32_kevent_put_events,
    637 	};
    638 
    639 	nchanges = SCARG(uap, nchanges);
    640 	nevents = SCARG(uap, nevents);
    641 	maxalloc = KQ_NEVENTS;
    642 
    643 	netbsd32_kevent_ops.keo_private =
    644 	    kmem_alloc(maxalloc * sizeof(struct netbsd32_kevent), KM_SLEEP);
    645 
    646 	error = kevent1(retval, SCARG(uap, fd),
    647 	    NETBSD32PTR64(SCARG(uap, changelist)), nchanges,
    648 	    NETBSD32PTR64(SCARG(uap, eventlist)), nevents,
    649 	    NETBSD32PTR64(SCARG(uap, timeout)), &netbsd32_kevent_ops);
    650 
    651 	kmem_free(netbsd32_kevent_ops.keo_private,
    652 	    maxalloc * sizeof(struct netbsd32_kevent));
    653 	return error;
    654 }
    655 
    656 int
    657 compat_50_netbsd32_pselect(struct lwp *l,
    658     const struct compat_50_netbsd32_pselect_args *uap, register_t *retval)
    659 {
    660 	/* {
    661 		syscallarg(int) nd;
    662 		syscallarg(netbsd32_fd_setp_t) in;
    663 		syscallarg(netbsd32_fd_setp_t) ou;
    664 		syscallarg(netbsd32_fd_setp_t) ex;
    665 		syscallarg(const netbsd32_timespec50p_t) ts;
    666 		syscallarg(const netbsd32_sigsetp_t) mask;
    667 	} */
    668 	int error;
    669 	struct netbsd32_timespec50 ts32;
    670 	struct timespec ats, *ts = NULL;
    671 	sigset_t amask, *mask = NULL;
    672 
    673 	if (SCARG_P32(uap, ts)) {
    674 		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof(ts32));
    675 		if (error != 0)
    676 			return error;
    677 		netbsd32_to_timespec50(&ts32, &ats);
    678 		ts = &ats;
    679 	}
    680 	if (SCARG_P32(uap, mask)) {
    681 		error = copyin(SCARG_P32(uap, mask), &amask, sizeof(amask));
    682 		if (error != 0)
    683 			return error;
    684 		mask = &amask;
    685 	}
    686 
    687 	return selcommon(retval, SCARG(uap, nd), SCARG_P32(uap, in),
    688 	    SCARG_P32(uap, ou), SCARG_P32(uap, ex), ts, mask);
    689 }
    690 
    691 int
    692 compat_50_netbsd32_pollts(struct lwp *l,
    693     const struct compat_50_netbsd32_pollts_args *uap, register_t *retval)
    694 {
    695 	/* {
    696 		syscallarg(struct netbsd32_pollfdp_t) fds;
    697 		syscallarg(u_int) nfds;
    698 		syscallarg(const netbsd32_timespec50p_t) ts;
    699 		syscallarg(const netbsd32_sigsetp_t) mask;
    700 	} */
    701 	int error;
    702 	struct netbsd32_timespec50 ts32;
    703 	struct timespec ats, *ts = NULL;
    704 	sigset_t amask, *mask = NULL;
    705 
    706 	if (SCARG_P32(uap, ts)) {
    707 		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof(ts32));
    708 		if (error != 0)
    709 			return error;
    710 		netbsd32_to_timespec50(&ts32, &ats);
    711 		ts = &ats;
    712 	}
    713 	if (NETBSD32PTR64( SCARG(uap, mask))) {
    714 		error = copyin(SCARG_P32(uap, mask), &amask, sizeof(amask));
    715 		if (error != 0)
    716 			return error;
    717 		mask = &amask;
    718 	}
    719 
    720 	return pollcommon(retval, SCARG_P32(uap, fds),
    721 	    SCARG(uap, nfds), ts, mask);
    722 }
    723 
    724 int
    725 compat_50_netbsd32___stat30(struct lwp *l,
    726     const struct compat_50_netbsd32___stat30_args *uap, register_t *retval)
    727 {
    728 	/* {
    729 		syscallarg(const netbsd32_charp) path;
    730 		syscallarg(netbsd32_stat50p_t) ub;
    731 	} */
    732 	struct netbsd32_stat50 sb32;
    733 	struct stat sb;
    734 	int error;
    735 	const char *path;
    736 
    737 	path = SCARG_P32(uap, path);
    738 
    739 	error = do_sys_stat(path, FOLLOW, &sb);
    740 	if (error)
    741 		return error;
    742 	netbsd32_from___stat50(&sb, &sb32);
    743 	error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
    744 	return error;
    745 }
    746 
    747 int
    748 compat_50_netbsd32___fstat30(struct lwp *l,
    749     const struct compat_50_netbsd32___fstat30_args *uap, register_t *retval)
    750 {
    751 	/* {
    752 		syscallarg(int) fd;
    753 		syscallarg(netbsd32_stat50p_t) sb;
    754 	} */
    755 	struct netbsd32_stat50 sb32;
    756 	struct stat ub;
    757 	int error;
    758 
    759 	error = do_sys_fstat(SCARG(uap, fd), &ub);
    760 	if (error == 0) {
    761 		netbsd32_from___stat50(&ub, &sb32);
    762 		error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32));
    763 	}
    764 	return error;
    765 }
    766 
    767 int
    768 compat_50_netbsd32___lstat30(struct lwp *l,
    769     const struct compat_50_netbsd32___lstat30_args *uap, register_t *retval)
    770 {
    771 	/* {
    772 		syscallarg(const netbsd32_charp) path;
    773 		syscallarg(netbsd32_stat50p_t) ub;
    774 	} */
    775 	struct netbsd32_stat50 sb32;
    776 	struct stat sb;
    777 	int error;
    778 	const char *path;
    779 
    780 	path = SCARG_P32(uap, path);
    781 
    782 	error = do_sys_stat(path, NOFOLLOW, &sb);
    783 	if (error)
    784 		return error;
    785 	netbsd32_from___stat50(&sb, &sb32);
    786 	error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32));
    787 	return error;
    788 }
    789 
    790 int
    791 compat_50_netbsd32___fhstat40(struct lwp *l, const struct compat_50_netbsd32___fhstat40_args *uap, register_t *retval)
    792 {
    793 	/* {
    794 		syscallarg(const netbsd32_pointer_t) fhp;
    795 		syscallarg(netbsd32_size_t) fh_size;
    796 		syscallarg(netbsd32_stat50p_t) sb;
    797 	} */
    798 	struct stat sb;
    799 	struct netbsd32_stat50 sb32;
    800 	int error;
    801 
    802 	error = do_fhstat(l, SCARG_P32(uap, fhp), SCARG(uap, fh_size), &sb);
    803 	if (error == 0) {
    804 		netbsd32_from___stat50(&sb, &sb32);
    805 		error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32));
    806 	}
    807 	return error;
    808 }
    809 
    810 int
    811 compat_50_netbsd32_wait4(struct lwp *l, const struct compat_50_netbsd32_wait4_args *uap, register_t *retval)
    812 {
    813 	/* {
    814 		syscallarg(int) pid;
    815 		syscallarg(netbsd32_intp) status;
    816 		syscallarg(int) options;
    817 		syscallarg(netbsd32_rusage50p_t) rusage;
    818 	} */
    819 	int error, status, pid = SCARG(uap, pid);
    820 	struct netbsd32_rusage50 ru32;
    821 	struct rusage ru;
    822 
    823 	error = do_sys_wait(&pid, &status, SCARG(uap, options),
    824 	    SCARG_P32(uap, rusage) != NULL ? &ru : NULL);
    825 
    826 	retval[0] = pid;
    827 	if (pid == 0)
    828 		return error;
    829 
    830 	if (SCARG_P32(uap, rusage)) {
    831 		netbsd32_from_rusage50(&ru, &ru32);
    832 		error = copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
    833 	}
    834 
    835 	if (error == 0 && SCARG_P32(uap, status))
    836 		error = copyout(&status, SCARG_P32(uap, status), sizeof(status));
    837 
    838 	return error;
    839 }
    840 
    841 
    842 int
    843 compat_50_netbsd32_getrusage(struct lwp *l, const struct compat_50_netbsd32_getrusage_args *uap, register_t *retval)
    844 {
    845 	/* {
    846 		syscallarg(int) who;
    847 		syscallarg(netbsd32_rusage50p_t) rusage;
    848 	} */
    849 	int error;
    850 	struct proc *p = l->l_proc;
    851 	struct rusage ru;
    852 	struct netbsd32_rusage50 ru32;
    853 
    854 	error = getrusage1(p, SCARG(uap, who), &ru);
    855 	if (error != 0)
    856 		return error;
    857 
    858 	netbsd32_from_rusage50(&ru, &ru32);
    859 	return copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
    860 }
    861 
    862 int
    863 compat_50_netbsd32_setitimer(struct lwp *l,
    864     const struct compat_50_netbsd32_setitimer_args *uap, register_t *retval)
    865 {
    866 	/* {
    867 		syscallarg(int) which;
    868 		syscallarg(const netbsd32_itimerval50p_t) itv;
    869 		syscallarg(netbsd32_itimerval50p_t) oitv;
    870 	} */
    871 	struct proc *p = l->l_proc;
    872 	struct netbsd32_itimerval50 s32it, *itv32;
    873 	int which = SCARG(uap, which);
    874 	struct compat_50_netbsd32_getitimer_args getargs;
    875 	struct itimerval aitv;
    876 	int error;
    877 
    878 	if ((u_int)which > ITIMER_PROF)
    879 		return EINVAL;
    880 	itv32 = SCARG_P32(uap, itv);
    881 	if (itv32) {
    882 		if ((error = copyin(itv32, &s32it, sizeof(s32it))))
    883 			return error;
    884 		netbsd32_to_itimerval50(&s32it, &aitv);
    885 	}
    886 	if (SCARG_P32(uap, oitv) != 0) {
    887 		SCARG(&getargs, which) = which;
    888 		SCARG(&getargs, itv) = SCARG(uap, oitv);
    889 		if ((error = compat_50_netbsd32_getitimer(l, &getargs, retval)) != 0)
    890 			return error;
    891 	}
    892 	if (itv32 == 0)
    893 		return 0;
    894 
    895 	return dosetitimer(p, which, &aitv);
    896 }
    897 
    898 int
    899 compat_50_netbsd32_getitimer(struct lwp *l, const struct compat_50_netbsd32_getitimer_args *uap, register_t *retval)
    900 {
    901 	/* {
    902 		syscallarg(int) which;
    903 		syscallarg(netbsd32_itimerval50p_t) itv;
    904 	} */
    905 	struct proc *p = l->l_proc;
    906 	struct netbsd32_itimerval50 s32it;
    907 	struct itimerval aitv;
    908 	int error;
    909 
    910 	error = dogetitimer(p, SCARG(uap, which), &aitv);
    911 	if (error)
    912 		return error;
    913 
    914 	netbsd32_from_itimerval50(&aitv, &s32it);
    915 	return copyout(&s32it, SCARG_P32(uap, itv), sizeof(s32it));
    916 }
    917 
    918 #ifdef NTP
    919 int
    920 compat_50_netbsd32_ntp_gettime(struct lwp *l,
    921     const struct compat_50_netbsd32_ntp_gettime_args *uap, register_t *retval)
    922 {
    923 	/* {
    924 		syscallarg(netbsd32_ntptimeval50p_t) ntvp;
    925 	} */
    926 	struct netbsd32_ntptimeval50 ntv32;
    927 	struct ntptimeval ntv;
    928 	int error = 0;
    929 
    930 	if (vec_ntp_gettime == NULL)
    931 		return EINVAL;
    932 
    933 	if (SCARG_P32(uap, ntvp)) {
    934 		(*vec_ntp_gettime)(&ntv);
    935 
    936 		memset(&ntv32, 0, sizeof(ntv32));
    937 		ntv32.time.tv_sec = (int32_t)ntv.time.tv_sec;
    938 		ntv32.time.tv_nsec = ntv.time.tv_nsec;
    939 		ntv32.maxerror = (netbsd32_long)ntv.maxerror;
    940 		ntv32.esterror = (netbsd32_long)ntv.esterror;
    941 		ntv32.tai = (netbsd32_long)ntv.tai;
    942 		ntv32.time_state = ntv.time_state;
    943 		error = copyout(&ntv32, SCARG_P32(uap, ntvp), sizeof(ntv32));
    944 	}
    945 	if (!error) {
    946 		*retval = (*vec_ntp_timestatus)();
    947 	}
    948 
    949 	return error;
    950 }
    951 #endif
    952 
    953 static struct syscall_package compat_netbsd32_50_syscalls[] = {
    954 	{ NETBSD32_SYS_compat_50_netbsd32_mknod, 0,
    955 	    (sy_call_t *)compat_50_netbsd32_mknod },
    956 	{ NETBSD32_SYS_compat_50_netbsd32_select, 0,
    957 	    (sy_call_t *)compat_50_netbsd32_select },
    958 	{ NETBSD32_SYS_compat_50_netbsd32_gettimeofday, 0,
    959 	    (sy_call_t *)compat_50_netbsd32_gettimeofday },
    960 	{ NETBSD32_SYS_compat_50_netbsd32_settimeofday, 0,
    961 	    (sy_call_t *)compat_50_netbsd32_settimeofday },
    962 	{ NETBSD32_SYS_compat_50_netbsd32_utimes, 0,
    963 	    (sy_call_t *)compat_50_netbsd32_utimes },
    964 	{ NETBSD32_SYS_compat_50_netbsd32_futimes, 0,
    965 	    (sy_call_t *)compat_50_netbsd32_futimes },
    966 	{ NETBSD32_SYS_compat_50_netbsd32_adjtime, 0,
    967 	    (sy_call_t *)compat_50_netbsd32_adjtime },
    968 	{ NETBSD32_SYS_compat_50_netbsd32_clock_gettime, 0,
    969 	    (sy_call_t *)compat_50_netbsd32_clock_gettime },
    970 	{ NETBSD32_SYS_compat_50_netbsd32_clock_settime, 0,
    971 	    (sy_call_t *)compat_50_netbsd32_clock_settime },
    972 	{ NETBSD32_SYS_compat_50_netbsd32_clock_getres, 0,
    973 	    (sy_call_t *)compat_50_netbsd32_clock_getres },
    974 	{ NETBSD32_SYS_compat_50_netbsd32_timer_settime, 0,
    975 	    (sy_call_t *)compat_50_netbsd32_timer_settime },
    976 	{ NETBSD32_SYS_compat_50_netbsd32_timer_gettime, 0,
    977 	    (sy_call_t *)compat_50_netbsd32_timer_gettime },
    978 	{ NETBSD32_SYS_compat_50_netbsd32_nanosleep, 0,
    979 	    (sy_call_t *)compat_50_netbsd32_nanosleep },
    980 	{ NETBSD32_SYS_compat_50_netbsd32___sigtimedwait, 0,
    981 	    (sy_call_t *)compat_50_netbsd32___sigtimedwait },
    982 	{ NETBSD32_SYS_compat_50_netbsd32_lutimes, 0,
    983 	    (sy_call_t *)compat_50_netbsd32_lutimes },
    984 	{ NETBSD32_SYS_compat_50_netbsd32__lwp_park, 0,
    985 	    (sy_call_t *)compat_50_netbsd32__lwp_park },
    986 	{ NETBSD32_SYS_compat_50_netbsd32_kevent, 0,
    987 	    (sy_call_t *)compat_50_netbsd32_kevent },
    988 	{ NETBSD32_SYS_compat_50_netbsd32_pselect, 0,
    989 	    (sy_call_t *)compat_50_netbsd32_pselect },
    990 	{ NETBSD32_SYS_compat_50_netbsd32_pollts, 0,
    991 	    (sy_call_t *)compat_50_netbsd32_pollts },
    992 	{ NETBSD32_SYS_compat_50_netbsd32___stat30, 0,
    993 	    (sy_call_t *)compat_50_netbsd32___stat30 },
    994 	{ NETBSD32_SYS_compat_50_netbsd32___fstat30, 0,
    995 	    (sy_call_t *)compat_50_netbsd32___fstat30 },
    996 	{ NETBSD32_SYS_compat_50_netbsd32___lstat30, 0,
    997 	    (sy_call_t *)compat_50_netbsd32___lstat30 },
    998 	{ NETBSD32_SYS_compat_50_netbsd32___fhstat40, 0,
    999 	    (sy_call_t *)compat_50_netbsd32___fhstat40 },
   1000 	{ NETBSD32_SYS_compat_50_netbsd32_wait4, 0,
   1001 	    (sy_call_t *)compat_50_netbsd32_wait4 },
   1002 	{ NETBSD32_SYS_compat_50_netbsd32_getrusage, 0,
   1003 	    (sy_call_t *)compat_50_netbsd32_getrusage },
   1004 	{ NETBSD32_SYS_compat_50_netbsd32_setitimer, 0,
   1005 	    (sy_call_t *)compat_50_netbsd32_setitimer },
   1006 	{ NETBSD32_SYS_compat_50_netbsd32_getitimer, 0,
   1007 	    (sy_call_t *)compat_50_netbsd32_getitimer },
   1008 #ifdef NTP
   1009 	{ NETBSD32_SYS_compat_50_netbsd32_ntp_gettime, 0,
   1010 	    (sy_call_t *)compat_50_netbsd32_ntp_gettime },
   1011 #endif
   1012 	{ 0, 0, NULL }
   1013 };
   1014 
   1015 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_50, "compat_netbsd32_60,compat_50");
   1016 
   1017 static int
   1018 compat_netbsd32_50_modcmd(modcmd_t cmd, void *arg)
   1019 {
   1020 	int ret;
   1021 
   1022 	switch (cmd) {
   1023 	case MODULE_CMD_INIT:
   1024                 ret = syscall_establish(&emul_netbsd32,
   1025 		    compat_netbsd32_50_syscalls);
   1026 		if (ret == 0)
   1027 			MODULE_HOOK_SET(rnd_ioctl32_50_hook,
   1028 			    compat32_50_rnd_ioctl);
   1029 		return ret;
   1030 
   1031 	case MODULE_CMD_FINI:
   1032                 ret = syscall_disestablish(&emul_netbsd32,
   1033 		    compat_netbsd32_50_syscalls);
   1034 		if (ret == 0)
   1035 			MODULE_HOOK_UNSET(rnd_ioctl32_50_hook);
   1036 		return ret;
   1037 
   1038 	default:
   1039 		return ENOTTY;
   1040 	}
   1041 }
   1042 #endif /* COMPAT_50 */
   1043