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/*
* Copyright (c) 2000-2001, Boris Popov
* 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 Boris Popov.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY 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.
*
* $Id: smbfs_subr.c,v 1.18 2005/02/02 00:22:23 lindak Exp $
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Copyright 2018 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Time conversion functions (to/from DOS, NT times)
* From BSD/Darwin smbfs_subr.c
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/vnode.h>
#include <sys/sunddi.h>
#include <netsmb/smb_osdep.h>
#include <netsmb/smb.h>
#include <netsmb/smb_conn.h>
#include <netsmb/smb_subr.h>
/*
* Number of seconds between 1970 and 1601 year
* (134774 days)
*/
const uint64_t DIFF1970TO1601 = 11644473600ULL;
const uint32_t TEN_MIL = 10000000UL;
/*
* Convert NT time (tenths of microseconds since 1601)
* to Unix seconds+nanoseconds since 1970. Any time
* earlier than 1970 is converted to Unix time zero.
* Both are GMT-based (no time zone adjustments).
*/
void
smb_time_NT2local(uint64_t nt_time, struct timespec *tsp)
{
uint64_t nt_sec; /* seconds */
uint64_t nt_tus; /* tenths of uSec. */
/* Optimize time zero. */
if (nt_time == 0) {
tsp->tv_sec = 0;
tsp->tv_nsec = 0;
return;
}
nt_sec = nt_time / TEN_MIL;
nt_tus = nt_time % TEN_MIL;
if (nt_sec <= DIFF1970TO1601) {
tsp->tv_sec = 0;
tsp->tv_nsec = 0;
return;
}
tsp->tv_sec = nt_sec - DIFF1970TO1601;
tsp->tv_nsec = nt_tus * 100;
}
/*
* Convert Unix time (seconds+nanoseconds since 1970)
* to NT time (tenths of microseconds since 1601).
* Exception: Convert time zero (really any time in
* the first second of 1970) to NT time zero.
* Both are GMT-based (no time zone adjustments).
*/
void
smb_time_local2NT(struct timespec *tsp, uint64_t *nt_time)
{
uint64_t nt_sec; /* seconds */
uint64_t nt_tus; /* tenths of uSec. */
if (tsp->tv_sec == 0) {
*nt_time = 0;
return;
}
nt_sec = tsp->tv_sec + DIFF1970TO1601;
nt_tus = tsp->tv_nsec / 100;
*nt_time = (uint64_t)nt_sec * TEN_MIL + nt_tus;
}
/*
* Time zone conversion stuff, only used in old dialects.
* Don't adjust time zero for either conversion.
*/
void
smb_time_local2server(struct timespec *tsp, int tzoff, long *seconds)
{
if (tsp->tv_sec <= (tzoff * 60))
*seconds = 0;
else
*seconds = tsp->tv_sec - (tzoff * 60);
}
void
smb_time_server2local(ulong_t seconds, int tzoff, struct timespec *tsp)
{
if (seconds == 0)
tsp->tv_sec = 0;
else
tsp->tv_sec = seconds + tzoff * 60;
tsp->tv_nsec = 0;
}
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