1 /* 2 * Copyright (c) 2000-2001, Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $Id: smbfs_subr.c,v 1.18 2005/02/02 00:22:23 lindak Exp $ 33 */ 34 35 /* 36 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 37 * Use is subject to license terms. 38 * 39 * Copyright 2018 Nexenta Systems, Inc. All rights reserved. 40 */ 41 42 /* 43 * Time conversion functions (to/from DOS, NT times) 44 * From BSD/Darwin smbfs_subr.c 45 */ 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/time.h> 50 #include <sys/vnode.h> 51 #include <sys/sunddi.h> 52 53 #include <netsmb/smb_osdep.h> 54 55 #include <netsmb/smb.h> 56 #include <netsmb/smb_conn.h> 57 #include <netsmb/smb_subr.h> 58 59 /* 60 * Number of seconds between 1970 and 1601 year 61 * (134774 days) 62 */ 63 const uint64_t DIFF1970TO1601 = 11644473600ULL; 64 const uint32_t TEN_MIL = 10000000UL; 65 66 /* 67 * Convert NT time (tenths of microseconds since 1601) 68 * to Unix seconds+nanoseconds since 1970. Any time 69 * earlier than 1970 is converted to Unix time zero. 70 * Both are GMT-based (no time zone adjustments). 71 */ 72 void 73 smb_time_NT2local(uint64_t nt_time, struct timespec *tsp) 74 { 75 uint64_t nt_sec; /* seconds */ 76 uint64_t nt_tus; /* tenths of uSec. */ 77 78 /* Optimize time zero. */ 79 if (nt_time == 0) { 80 tsp->tv_sec = 0; 81 tsp->tv_nsec = 0; 82 return; 83 } 84 85 nt_sec = nt_time / TEN_MIL; 86 nt_tus = nt_time % TEN_MIL; 87 88 if (nt_sec <= DIFF1970TO1601) { 89 tsp->tv_sec = 0; 90 tsp->tv_nsec = 0; 91 return; 92 } 93 tsp->tv_sec = nt_sec - DIFF1970TO1601; 94 tsp->tv_nsec = nt_tus * 100; 95 } 96 97 /* 98 * Convert Unix time (seconds+nanoseconds since 1970) 99 * to NT time (tenths of microseconds since 1601). 100 * Exception: Convert time zero (really any time in 101 * the first second of 1970) to NT time zero. 102 * Both are GMT-based (no time zone adjustments). 103 */ 104 void 105 smb_time_local2NT(struct timespec *tsp, uint64_t *nt_time) 106 { 107 uint64_t nt_sec; /* seconds */ 108 uint64_t nt_tus; /* tenths of uSec. */ 109 110 if (tsp->tv_sec == 0) { 111 *nt_time = 0; 112 return; 113 } 114 115 nt_sec = tsp->tv_sec + DIFF1970TO1601; 116 nt_tus = tsp->tv_nsec / 100; 117 118 *nt_time = (uint64_t)nt_sec * TEN_MIL + nt_tus; 119 } 120 121 /* 122 * Time zone conversion stuff, only used in old dialects. 123 * Don't adjust time zero for either conversion. 124 */ 125 void 126 smb_time_local2server(struct timespec *tsp, int tzoff, long *seconds) 127 { 128 if (tsp->tv_sec <= (tzoff * 60)) 129 *seconds = 0; 130 else 131 *seconds = tsp->tv_sec - (tzoff * 60); 132 } 133 134 void 135 smb_time_server2local(ulong_t seconds, int tzoff, struct timespec *tsp) 136 { 137 if (seconds == 0) 138 tsp->tv_sec = 0; 139 else 140 tsp->tv_sec = seconds + tzoff * 60; 141 tsp->tv_nsec = 0; 142 } 143