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/* $OpenBSD: linux_time.c,v 1.4 2013/05/10 10:31:16 pirofti Exp $ */
/*
* Copyright (c) 2010, 2011 Paul Irofti <pirofti@openbsd.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <sys/signal.h>
#include <sys/stdint.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/syscallargs.h>
#include <compat/linux/linux_types.h>
#include <compat/linux/linux_fcntl.h>
#include <compat/linux/linux_misc.h>
#include <compat/linux/linux_mmap.h>
#include <compat/linux/linux_sched.h>
#include <compat/linux/linux_signal.h>
#include <compat/linux/linux_syscallargs.h>
#include <compat/linux/linux_util.h>
#include <compat/linux/linux_dirent.h>
#include <compat/linux/linux_emuldata.h>
#include <compat/linux/linux_time.h>
#define LINUX_CLOCK_REALTIME 0
#define LINUX_CLOCK_MONOTONIC 1
#define LINUX_CLOCK_PROCESS_CPUTIME_ID 2
#define LINUX_CLOCK_THREAD_CPUTIME_ID 3
#define LINUX_CLOCK_REALTIME_HR 4
#define LINUX_CLOCK_MONOTONIC_HR 5
int
native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
{
if (ntp->tv_sec > LINUX_TIME_MAX)
return EOVERFLOW;
ltp->tv_sec = ntp->tv_sec;
ltp->tv_nsec = ntp->tv_nsec;
return 0;
}
void
linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
{
ntp->tv_sec = ltp->tv_sec;
ntp->tv_nsec = ltp->tv_nsec;
}
int
linux_to_native_clockid(clockid_t *n, clockid_t l)
{
switch (l) {
case LINUX_CLOCK_REALTIME:
*n = CLOCK_REALTIME;
break;
case LINUX_CLOCK_MONOTONIC:
*n = CLOCK_MONOTONIC;
break;
case LINUX_CLOCK_PROCESS_CPUTIME_ID:
case LINUX_CLOCK_THREAD_CPUTIME_ID:
case LINUX_CLOCK_REALTIME_HR:
case LINUX_CLOCK_MONOTONIC_HR:
default:
return (EINVAL);
break;
}
return (0);
}
int
linux_sys_clock_getres(struct proc *p, void *v, register_t *retval)
{
struct linux_sys_clock_getres_args *uap = v;
struct sys_clock_getres_args cgr;
int error;
if (SCARG(uap, tp) == NULL)
return 0;
error = linux_to_native_clockid(&SCARG(&cgr, clock_id),
SCARG(uap, which));
if (error != 0)
return error;
SCARG(&cgr, tp) = (struct timespec *)SCARG(uap, tp);
return sys_clock_getres(p, &cgr, retval);
}
int
linux_sys_clock_gettime(struct proc *p, void *v, register_t *retval)
{
struct linux_sys_clock_gettime_args *uap = v;
clockid_t clockid = 0;
struct timespec tp;
struct l_timespec ltp;
int error;
error = linux_to_native_clockid(&clockid, SCARG(uap, which));
if (error != 0)
return error;
error = clock_gettime(p, clockid, &tp);
if (error != 0)
return error;
error = native_to_linux_timespec(<p, &tp);
if (error != 0)
return error;
return (copyout(<p, SCARG(uap, tp), sizeof ltp));
}
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