xref: /src/sys/compat/linux32/common/linux32_time.c

/*	$NetBSD: linux32_time.c,v 1.13 2007/05/12 20:24:54 dsl Exp $ */

/*-
 * Copyright (c) 2006 Emmanuel Dreyfus, 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Emmanuel Dreyfus
 * 4. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS
 * 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: linux32_time.c,v 1.13 2007/05/12 20:24:54 dsl Exp $");

#include <sys/types.h>
#include <sys/param.h>
#include <sys/fstypes.h>
#include <sys/signal.h>
#include <sys/dirent.h>
#include <sys/kauth.h>
#include <sys/kernel.h>
#include <sys/fcntl.h>
#include <sys/namei.h>
#include <sys/select.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/ucred.h>
#include <sys/swap.h>
#include <sys/vfs_syscalls.h>

#include <machine/types.h>

#include <sys/syscallargs.h>

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

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_machdep.h>
#include <compat/linux/common/linux_misc.h>
#include <compat/linux/common/linux_oldolduname.h>
#include <compat/linux/linux_syscallargs.h>

#include <compat/linux32/common/linux32_types.h>
#include <compat/linux32/common/linux32_signal.h>
#include <compat/linux32/common/linux32_machdep.h>
#include <compat/linux32/common/linux32_sysctl.h>
#include <compat/linux32/common/linux32_socketcall.h>
#include <compat/linux32/linux32_syscallargs.h>

extern struct timezone linux_sys_tz;
int
linux32_sys_gettimeofday(l, v, retval)
	struct lwp *l;
	void *v;
	register_t *retval;
{
	struct linux32_sys_gettimeofday_args /* {
		syscallarg(netbsd32_timevalp_t) tp;
		syscallarg(netbsd32_timezonep_t) tzp;
	} */ *uap = v;
	struct timeval tv;
	struct netbsd32_timeval tv32;
	int error;

	if (SCARG_P32(uap, tp) != NULL) {
		microtime(&tv);
		netbsd32_from_timeval(&tv, &tv32);
		if ((error = copyout(&tv32, SCARG_P32(uap, tp),
		    sizeof(tv32))) != 0)
			return error;
	}

	/* timezone size does not change */
	if (SCARG_P32(uap, tzp) != NULL) {
		if ((error = copyout(&linux_sys_tz, SCARG_P32(uap, tzp),
		    sizeof(linux_sys_tz))) != 0)
			return error;
	}

	return 0;
}

int
linux32_sys_settimeofday(l, v, retval)
	struct lwp *l;
	void *v;
	register_t *retval;
{
	struct linux32_sys_settimeofday_args /* {
		syscallarg(netbsd32_timevalp_t) tp;
		syscallarg(netbsd32_timezonep_t) tzp;
	} */ *uap = v;
	struct linux_sys_settimeofday_args ua;

	NETBSD32TOP_UAP(tp, struct timeval);
	NETBSD32TOP_UAP(tzp, struct timezone);

	return linux_sys_settimeofday(l, &ua, retval);
}

int
linux32_sys_time(l, v, retval)
	struct lwp *l;
	void *v;
	register_t *retval;
{
	struct linux32_sys_time_args /* {
		syscallcarg(linux32_timep_t) t;
	} */ *uap = v;
        struct timeval atv;
        linux32_time_t tt;
        int error;

        microtime(&atv);

        tt = (linux32_time_t)atv.tv_sec;

        if (SCARG_P32(uap, t) && (error = copyout(&tt,
	    SCARG_P32(uap, t), sizeof(tt))))
                return error;

        retval[0] = tt;

        return 0;
}


static inline linux32_clock_t
timeval_to_clock_t(struct timeval *tv)
{
	return tv->tv_sec * hz + tv->tv_usec / (1000000 / hz);
}

int
linux32_sys_times(l, v, retval)
	struct lwp *l;
	void *v;
	register_t *retval;
{
	struct linux32_sys_times_args /* {
		syscallarg(linux32_tmsp_t) tms;
	} */ *uap = v;
	struct linux32_tms ltms32;

	struct timeval		 t;
	struct rusage		 *ru;
	struct proc		 *p = l->l_proc;

	ru = &p->p_stats->p_ru;
	mutex_enter(&p->p_smutex);
	calcru(p, &ru->ru_utime, &ru->ru_stime, NULL, NULL);
	mutex_exit(&p->p_smutex);

	ltms32.ltms32_utime = timeval_to_clock_t(&ru->ru_utime);
	ltms32.ltms32_stime = timeval_to_clock_t(&ru->ru_stime);

	ru = &p->p_stats->p_cru;
	ltms32.ltms32_cutime = timeval_to_clock_t(&ru->ru_utime);
	ltms32.ltms32_cstime = timeval_to_clock_t(&ru->ru_stime);

	microtime(&t);
	*retval = timeval_to_clock_t(&t);

	return copyout(&ltms32, SCARG_P32(uap, tms), sizeof(ltms32));
}

int
linux32_sys_stime(l, v, retval)
	struct lwp *l;
	void *v;
	register_t *retval;
{
	struct linux32_sys_stime_args /* {
		syscallarg(linux32_timep_t) t;
	} */ *uap = v;
	struct timespec ts;
	linux32_time_t tt32;
	int error;

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

	if ((error = copyin(&tt32, SCARG_P32(uap, t), sizeof tt32)) != 0)
		return error;

	ts.tv_sec = (long)tt32;
	ts.tv_nsec = 0;

	return settime(l->l_proc, &ts);
}

int
linux32_sys_utime(l, v, retval)
	struct lwp *l;
	void *v;
	register_t *retval;
{
	struct linux32_sys_utime_args /* {
		syscallarg(const netbsd32_charp) path;
		syscallarg(linux32_utimbufp_t) times;
	} */ *uap = v;
        struct timeval tv[2], *tvp;
        struct linux32_utimbuf lut;
        int error;

        if (SCARG_P32(uap, times) != NULL) {
                if ((error = copyin(SCARG_P32(uap, times), &lut, sizeof lut)))
                        return error;

                tv[0].tv_sec = (long)lut.l_actime;
                tv[0].tv_usec = 0;
                tv[1].tv_sec = (long)lut.l_modtime;
		tv[1].tv_usec = 0;
                tvp = tv;
        } else {
		tvp = NULL;
	}

        return do_sys_utimes(l, NULL, SCARG_P32(uap, path), FOLLOW,
			    tvp, UIO_SYSSPACE);
}