NetBSD/sys/compat/linux/common/linux_time.c

126 lines
3.9 KiB
C

/* $NetBSD: linux_time.c,v 1.5 2001/11/15 09:48:01 lukem Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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: linux_time.c,v 1.5 2001/11/15 09:48:01 lukem Exp $");
#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/syscallargs.h>
#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/linux_syscallargs.h>
/*
* This is not implemented for alpha yet
*/
#if defined (__i386__) || defined (__m68k__) || \
defined (__powerpc__) || defined (__mips__)
/*
* Linux keeps track of a system timezone in the kernel. It is readen
* by gettimeofday and set by settimeofday. This emulates this behavior
* See linux/kernel/time.c
*/
struct timezone linux_sys_tz;
int linux_sys_gettimeofday(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_gettimeofday_args /* {
syscallarg(struct timeval *) tz;
syscallarg(struct timezone *) tzp;
} */ *uap = v;
int error = 0;
if (SCARG(uap, tp)) {
error = sys_gettimeofday (p, v, retval);
if (error)
return (error);
}
if (SCARG(uap, tzp)) {
error = copyout(&linux_sys_tz, SCARG(uap, tzp), sizeof(linux_sys_tz));
if (error)
return (error);
}
return (0);
}
int linux_sys_settimeofday(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_settimeofday_args /* {
syscallarg(struct timeval *) tz;
syscallarg(struct timezone *) tzp;
} */ *uap = v;
int error = 0;
if (SCARG(uap, tp)) {
error = sys_settimeofday(p, v, retval);
if (error)
return (error);
}
/*
* If user is not the superuser, we returned
* after the sys_settimeofday() call.
*/
if (SCARG(uap, tzp)) {
error = copyin(SCARG(uap, tzp), &linux_sys_tz, sizeof(linux_sys_tz));
if (error)
return (error);
}
return (0);
}
#endif /* __i386__ || __m68k__ || __powerpc__ || __mips__ */