/*	$NetBSD: netbsd32_time.c,v 1.51.4.1 2022/08/03 11:11:31 martin Exp $	*/

/*
 * Copyright (c) 1998, 2001 Matthew R. Green
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: netbsd32_time.c,v 1.51.4.1 2022/08/03 11:11:31 martin Exp $");

#if defined(_KERNEL_OPT)
#include "opt_ntp.h"
#include "opt_compat_netbsd.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <sys/timex.h>
#include <sys/timevar.h>
#include <sys/proc.h>
#include <sys/pool.h>
#include <sys/resourcevar.h>
#include <sys/dirent.h>
#include <sys/kauth.h>
#include <sys/compat_stub.h>

#include <compat/netbsd32/netbsd32.h>
#include <compat/netbsd32/netbsd32_syscallargs.h>
#include <compat/netbsd32/netbsd32_conv.h>

#ifdef NTP

int
netbsd32___ntp_gettime50(struct lwp *l,
    const struct netbsd32___ntp_gettime50_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_ntptimevalp_t) ntvp;
	} */
	struct netbsd32_ntptimeval ntv32;
	struct ntptimeval ntv;
	int error = 0;

	if (vec_ntp_gettime == NULL)
		return EINVAL;

	if (SCARG_P32(uap, ntvp)) {
		(*vec_ntp_gettime)(&ntv);

		memset(&ntv32, 0, sizeof(ntv32));
		ntv32.time.tv_sec = ntv.time.tv_sec;
		ntv32.time.tv_nsec = ntv.time.tv_nsec;
		ntv32.maxerror = (netbsd32_long)ntv.maxerror;
		ntv32.esterror = (netbsd32_long)ntv.esterror;
		ntv32.tai = (netbsd32_long)ntv.tai;
		ntv32.time_state = ntv.time_state;
		error = copyout(&ntv32, SCARG_P32(uap, ntvp), sizeof(ntv32));
	}
	if (!error) {
		*retval = (*vec_ntp_timestatus)();
	}

	return (error);
}

int
netbsd32_ntp_adjtime(struct lwp *l, const struct netbsd32_ntp_adjtime_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_timexp_t) tp;
	} */
	struct netbsd32_timex ntv32;
	struct timex ntv;
	int error = 0;
	int modes;

	if (vec_ntp_adjtime1 == NULL)
		return EINVAL;

	if ((error = copyin(SCARG_P32(uap, tp), &ntv32, sizeof(ntv32))))
		return (error);

	netbsd32_to_timex(&ntv32, &ntv);

	/*
	 * Update selected clock variables - only the superuser can
	 * change anything. Note that there is no error checking here on
	 * the assumption the superuser should know what it is doing.
	 */
	modes = ntv.modes;
	if (modes != 0 && (error = kauth_authorize_system(l->l_cred,
	    KAUTH_SYSTEM_TIME, KAUTH_REQ_SYSTEM_TIME_NTPADJTIME, NULL, NULL,
	    NULL)))
		return (error);

	(*vec_ntp_adjtime1)(&ntv);

	netbsd32_from_timex(&ntv, &ntv32);
	error = copyout(&ntv32, SCARG_P32(uap, tp), sizeof(ntv32));
	if (!error) {
		*retval = (*vec_ntp_timestatus)();
	}
	return error;
}
#endif /* NTP */

int
netbsd32___setitimer50(struct lwp *l, const struct netbsd32___setitimer50_args *uap, register_t *retval)
{
	/* {
		syscallarg(int) which;
		syscallarg(const netbsd32_itimervalp_t) itv;
		syscallarg(netbsd32_itimervalp_t) oitv;
	} */
	struct proc *p = l->l_proc;
	struct netbsd32_itimerval s32it, *itv32;
	int which = SCARG(uap, which);
	struct netbsd32___getitimer50_args getargs;
	struct itimerval aitv;
	int error;

	if ((u_int)which > ITIMER_PROF)
		return (EINVAL);
	itv32 = SCARG_P32(uap, itv);
	if (itv32) {
		if ((error = copyin(itv32, &s32it, sizeof(s32it))))
			return (error);
		netbsd32_to_itimerval(&s32it, &aitv);
	}
	if (SCARG_P32(uap, oitv) != 0) {
		SCARG(&getargs, which) = which;
		SCARG(&getargs, itv) = SCARG(uap, oitv);
		if ((error = netbsd32___getitimer50(l, &getargs, retval)) != 0)
			return (error);
	}
	if (itv32 == 0)
		return 0;

	return dosetitimer(p, which, &aitv);
}

int
netbsd32___getitimer50(struct lwp *l, const struct netbsd32___getitimer50_args *uap, register_t *retval)
{
	/* {
		syscallarg(int) which;
		syscallarg(netbsd32_itimervalp_t) itv;
	} */
	struct proc *p = l->l_proc;
	struct netbsd32_itimerval s32it;
	struct itimerval aitv;
	int error;

	error = dogetitimer(p, SCARG(uap, which), &aitv);
	if (error)
		return error;

	netbsd32_from_itimerval(&aitv, &s32it);
	return copyout(&s32it, SCARG_P32(uap, itv), sizeof(s32it));
}

int
netbsd32___gettimeofday50(struct lwp *l, const struct netbsd32___gettimeofday50_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_timevalp_t) tp;
		syscallarg(netbsd32_timezonep_t) tzp;
	} */
	struct timeval atv;
	struct netbsd32_timeval tv32;
	int error = 0;
	struct netbsd32_timezone tzfake;

	if (SCARG_P32(uap, tp)) {
		microtime(&atv);
		netbsd32_from_timeval(&atv, &tv32);
		error = copyout(&tv32, SCARG_P32(uap, tp), sizeof(tv32));
		if (error)
			return (error);
	}
	if (SCARG_P32(uap, tzp)) {
		/*
		 * NetBSD has no kernel notion of time zone, so we just
		 * fake up a timezone struct and return it if demanded.
		 */
		memset(&tzfake, 0, sizeof(tzfake));
		tzfake.tz_minuteswest = 0;
		tzfake.tz_dsttime = 0;
		error = copyout(&tzfake, SCARG_P32(uap, tzp), sizeof(tzfake));
	}
	return (error);
}

int
netbsd32___settimeofday50(struct lwp *l, const struct netbsd32___settimeofday50_args *uap, register_t *retval)
{
	/* {
		syscallarg(const netbsd32_timevalp_t) tv;
		syscallarg(const netbsd32_timezonep_t) tzp;
	} */
	struct netbsd32_timeval atv32;
	struct timeval atv;
	struct timespec ats;
	int error;
	struct proc *p = l->l_proc;

	/* Verify all parameters before changing time. */

	/*
	 * NetBSD has no kernel notion of time zone, and only an
	 * obsolete program would try to set it, so we log a warning.
	 */
	if (SCARG_P32(uap, tzp))
		printf("pid %d attempted to set the "
		    "(obsolete) kernel time zone\n", p->p_pid);

	if (SCARG_P32(uap, tv) == 0)
		return 0;

	if ((error = copyin(SCARG_P32(uap, tv), &atv32, sizeof(atv32))) != 0)
		return error;

	netbsd32_to_timeval(&atv32, &atv);
	TIMEVAL_TO_TIMESPEC(&atv, &ats);
	return settime(p, &ats);
}

int
netbsd32___adjtime50(struct lwp *l, const struct netbsd32___adjtime50_args *uap, register_t *retval)
{
	/* {
		syscallarg(const netbsd32_timevalp_t) delta;
		syscallarg(netbsd32_timevalp_t) olddelta;
	} */
	struct netbsd32_timeval atv;
	int error;

	extern int time_adjusted;     /* in kern_ntptime.c */
	extern int64_t time_adjtime;  /* in kern_ntptime.c */

	if ((error = kauth_authorize_system(l->l_cred,
	    KAUTH_SYSTEM_TIME, KAUTH_REQ_SYSTEM_TIME_ADJTIME, NULL, NULL,
	    NULL)) != 0)
		return (error);

	if (SCARG_P32(uap, olddelta)) {
		memset(&atv, 0, sizeof(atv));
		atv.tv_sec = time_adjtime / 1000000;
		atv.tv_usec = time_adjtime % 1000000;
		if (atv.tv_usec < 0) {
			atv.tv_usec += 1000000;
			atv.tv_sec--;
		}
		error = copyout(&atv, SCARG_P32(uap, olddelta), sizeof(atv));
		if (error)
			return (error);
	}

	if (SCARG_P32(uap, delta)) {
		error = copyin(SCARG_P32(uap, delta), &atv, sizeof(atv));
		if (error)
			return (error);

		time_adjtime = (int64_t)atv.tv_sec * 1000000 + atv.tv_usec;

		if (time_adjtime)
			/* We need to save the system time during shutdown */
			time_adjusted |= 1;
	}

	return (0);
}

int
netbsd32___clock_gettime50(struct lwp *l, const struct netbsd32___clock_gettime50_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_clockid_t) clock_id;
		syscallarg(netbsd32_timespecp_t) tp;
	} */
	int error;
	struct timespec ats;
	struct netbsd32_timespec ts32;

	error = clock_gettime1(SCARG(uap, clock_id), &ats);
	if (error != 0)
		return error;

	netbsd32_from_timespec(&ats, &ts32);
	return copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32));
}

int
netbsd32___clock_settime50(struct lwp *l, const struct netbsd32___clock_settime50_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_clockid_t) clock_id;
		syscallarg(const netbsd32_timespecp_t) tp;
	} */
	struct netbsd32_timespec ts32;
	struct timespec ats;
	int error;

	if ((error = copyin(SCARG_P32(uap, tp), &ts32, sizeof(ts32))) != 0)
		return (error);

	netbsd32_to_timespec(&ts32, &ats);
	return clock_settime1(l->l_proc, SCARG(uap, clock_id), &ats, true);
}

int
netbsd32___clock_getres50(struct lwp *l, const struct netbsd32___clock_getres50_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_clockid_t) clock_id;
		syscallarg(netbsd32_timespecp_t) tp;
	} */
	struct netbsd32_timespec ts32;
	struct timespec ts;
	int error = 0;

	error = clock_getres1(SCARG(uap, clock_id), &ts);
	if (error != 0)
		return error;

	if (SCARG_P32(uap, tp)) {
		netbsd32_from_timespec(&ts, &ts32);
		error = copyout(&ts32, SCARG_P32(uap, tp), sizeof(ts32));
	}

	return error;
}

int
netbsd32___nanosleep50(struct lwp *l, const struct netbsd32___nanosleep50_args *uap, register_t *retval)
{
	/* {
		syscallarg(const netbsd32_timespecp_t) rqtp;
		syscallarg(netbsd32_timespecp_t) rmtp;
	} */
	struct netbsd32_timespec ts32;
	struct timespec rqt, rmt;
	int error, error1;

	error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32));
	if (error)
		return (error);
	netbsd32_to_timespec(&ts32, &rqt);

	error = nanosleep1(l, CLOCK_MONOTONIC, 0, &rqt,
	    SCARG_P32(uap, rmtp) ? &rmt : NULL);
	if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR))
		return error;

	netbsd32_from_timespec(&rmt, &ts32);
	error1 = copyout(&ts32, SCARG_P32(uap, rmtp), sizeof(ts32));
	return error1 ? error1 : error;
}

int
netbsd32_clock_nanosleep(struct lwp *l, const struct netbsd32_clock_nanosleep_args *uap, register_t *retval)
{
	/* {
		syscallarg(clockid_t) clock_id;
		syscallarg(int) flags;
		syscallarg(const netbsd32_timespecp_t) rqtp;
		syscallarg(netbsd32_timespecp_t) rmtp;
	} */
	struct netbsd32_timespec ts32;
	struct timespec rqt, rmt;
	int error, error1;

	error = copyin(SCARG_P32(uap, rqtp), &ts32, sizeof(ts32));
	if (error)
		goto out;
	netbsd32_to_timespec(&ts32, &rqt);

	error = nanosleep1(l, SCARG(uap, clock_id), SCARG(uap, flags),
	    &rqt, SCARG_P32(uap, rmtp) ? &rmt : NULL);
	if (SCARG_P32(uap, rmtp) == NULL || (error != 0 && error != EINTR))
		goto out;

	netbsd32_from_timespec(&rmt, &ts32);
	if ((SCARG(uap, flags) & TIMER_ABSTIME) == 0 &&
	    (error1 = copyout(&ts32, SCARG_P32(uap, rmtp), sizeof(ts32))) != 0)
		error = error1;
out:
	*retval = error;
	return 0;
}

static int
netbsd32_timer_create_fetch(const void *src, void *dst, size_t size)
{
	struct sigevent *evp = dst;
	struct netbsd32_sigevent ev32;
	int error;

	error = copyin(src, &ev32, sizeof(ev32));
	if (error)
		return error;

	netbsd32_to_sigevent(&ev32, evp);
	return 0;
}

int
netbsd32_timer_create(struct lwp *l, const struct netbsd32_timer_create_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_clockid_t) clock_id;
		syscallarg(netbsd32_sigeventp_t) evp;
		syscallarg(netbsd32_timerp_t) timerid;
	} */

	return timer_create1(SCARG_P32(uap, timerid),
	    SCARG(uap, clock_id), SCARG_P32(uap, evp),
	    netbsd32_timer_create_fetch, l);
}

int
netbsd32_timer_delete(struct lwp *l, const struct netbsd32_timer_delete_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_timer_t) timerid;
	} */
	struct sys_timer_delete_args ua;

	NETBSD32TO64_UAP(timerid);
	return sys_timer_delete(l, (void *)&ua, retval);
}

int
netbsd32___timer_settime50(struct lwp *l, const struct netbsd32___timer_settime50_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_timer_t) timerid;
		syscallarg(int) flags;
		syscallarg(const netbsd32_itimerspecp_t) value;
		syscallarg(netbsd32_itimerspecp_t) ovalue;
	} */
	int error;
	struct itimerspec value, ovalue, *ovp = NULL;
	struct netbsd32_itimerspec its32;

	if ((error = copyin(SCARG_P32(uap, value), &its32, sizeof(its32))) != 0)
		return (error);
	netbsd32_to_timespec(&its32.it_interval, &value.it_interval);
	netbsd32_to_timespec(&its32.it_value, &value.it_value);

	if (SCARG_P32(uap, ovalue))
		ovp = &ovalue;

	if ((error = dotimer_settime(SCARG(uap, timerid), &value, ovp,
	    SCARG(uap, flags), l->l_proc)) != 0)
		return error;

	if (ovp) {
		memset(&its32, 0, sizeof(its32));
		netbsd32_from_timespec(&ovp->it_interval, &its32.it_interval);
		netbsd32_from_timespec(&ovp->it_value, &its32.it_value);
		return copyout(&its32, SCARG_P32(uap, ovalue), sizeof(its32));
	}
	return 0;
}

int
netbsd32___timer_gettime50(struct lwp *l, const struct netbsd32___timer_gettime50_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_timer_t) timerid;
		syscallarg(netbsd32_itimerspecp_t) value;
	} */
	int error;
	struct itimerspec its;
	struct netbsd32_itimerspec its32;

	if ((error = dotimer_gettime(SCARG(uap, timerid), l->l_proc,
	    &its)) != 0)
		return error;

	memset(&its32, 0, sizeof(its32));
	netbsd32_from_timespec(&its.it_interval, &its32.it_interval);
	netbsd32_from_timespec(&its.it_value, &its32.it_value);

	return copyout(&its32, SCARG_P32(uap, value), sizeof(its32));
}

int
netbsd32_timer_getoverrun(struct lwp *l, const struct netbsd32_timer_getoverrun_args *uap, register_t *retval)
{
	/* {
		syscallarg(netbsd32_timer_t) timerid;
	} */
	struct sys_timer_getoverrun_args ua;

	NETBSD32TO64_UAP(timerid);
	return sys_timer_getoverrun(l, (void *)&ua, retval);
}

int
netbsd32_clock_getcpuclockid2(struct lwp *l,
    const struct netbsd32_clock_getcpuclockid2_args *uap,
    register_t *retval)
{
	/* {
		syscallarg(idtype_t) idtype;
		syscallarg(id_t) id;
		syscallarg(netbsd32_clockidp_t) clock_id;
	} */
	pid_t pid;
	lwpid_t lid;
	clockid_t clock_id;
	id_t id = SCARG(uap, id);

	switch (SCARG(uap, idtype)) {
	case P_PID:
		pid = id == 0 ? l->l_proc->p_pid : id;
		clock_id = CLOCK_PROCESS_CPUTIME_ID | pid;
		break;
	case P_LWPID:
		lid = id == 0 ? l->l_lid : id;
		clock_id = CLOCK_THREAD_CPUTIME_ID | lid;
		break;
	default:
		return EINVAL;
	}
	return copyout(&clock_id, SCARG_P32(uap, clock_id), sizeof(clock_id));
}