1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 1995 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate */
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI"
27*0Sstevel@tonic-gate
28*0Sstevel@tonic-gate #include <stdio.h>
29*0Sstevel@tonic-gate #include <stdlib.h>
30*0Sstevel@tonic-gate #include <time.h>
31*0Sstevel@tonic-gate #include <tzfile.h>
32*0Sstevel@tonic-gate #include <sys/time.h>
33*0Sstevel@tonic-gate
34*0Sstevel@tonic-gate static int get_tzp_info(void);
35*0Sstevel@tonic-gate extern long _timezone, _altzone; /* from the base libc */
36*0Sstevel@tonic-gate
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate /*
39*0Sstevel@tonic-gate * The second parameter to gettimeofday() did not work correctly on
40*0Sstevel@tonic-gate * 4.x, and it was documented that localtime() should be used instead.
41*0Sstevel@tonic-gate * This is an attempt to provide correctly what 4.x meant to do. There
42*0Sstevel@tonic-gate * are shortcomings, however. See notes for DST_RUM and DST_AUSTALT.
43*0Sstevel@tonic-gate */
44*0Sstevel@tonic-gate
45*0Sstevel@tonic-gate int
gettimeofday(tp,tzp)46*0Sstevel@tonic-gate gettimeofday(tp, tzp)
47*0Sstevel@tonic-gate struct timeval *tp;
48*0Sstevel@tonic-gate struct timezone *tzp;
49*0Sstevel@tonic-gate {
50*0Sstevel@tonic-gate int ret = 0;
51*0Sstevel@tonic-gate
52*0Sstevel@tonic-gate if (tp != NULL)
53*0Sstevel@tonic-gate if ((ret = _gettimeofday(tp)) == -1)
54*0Sstevel@tonic-gate maperror();
55*0Sstevel@tonic-gate
56*0Sstevel@tonic-gate /*
57*0Sstevel@tonic-gate * We should call localtime() with the current time and
58*0Sstevel@tonic-gate * set tz_minuteswest to _altzone/SECSPERMIN if tm_isdst
59*0Sstevel@tonic-gate * is set. But we want to be bug-for-bug compatible with
60*0Sstevel@tonic-gate * 4.x, which would never adjust for DST. Futher comments
61*0Sstevel@tonic-gate * are in get_tzp_info().
62*0Sstevel@tonic-gate */
63*0Sstevel@tonic-gate if (tzp != NULL) {
64*0Sstevel@tonic-gate _tzset();
65*0Sstevel@tonic-gate tzp->tz_dsttime = get_tzp_info();
66*0Sstevel@tonic-gate tzp->tz_minuteswest = _timezone/SECSPERMIN;
67*0Sstevel@tonic-gate }
68*0Sstevel@tonic-gate
69*0Sstevel@tonic-gate return(ret);
70*0Sstevel@tonic-gate }
71*0Sstevel@tonic-gate
72*0Sstevel@tonic-gate static int
get_tzp_info()73*0Sstevel@tonic-gate get_tzp_info()
74*0Sstevel@tonic-gate {
75*0Sstevel@tonic-gate char *zonename = getenv("TZ");
76*0Sstevel@tonic-gate
77*0Sstevel@tonic-gate if ((zonename == NULL) || (*zonename == '\0'))
78*0Sstevel@tonic-gate return (DST_NONE);
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate if ((strncmp(zonename, "US/", 3) == 0) ||
81*0Sstevel@tonic-gate (strcmp(zonename, "PST8PDT") == 0) ||
82*0Sstevel@tonic-gate (strcmp(zonename, "MST7MDT") == 0) ||
83*0Sstevel@tonic-gate (strcmp(zonename, "CST6CDT") == 0) ||
84*0Sstevel@tonic-gate (strcmp(zonename, "EST5EDT") == 0) ||
85*0Sstevel@tonic-gate (strncmp(zonename, "America/", 8) == 0))
86*0Sstevel@tonic-gate return (DST_USA);
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate if (strncmp(zonename, "Australia/", 10) == 0)
89*0Sstevel@tonic-gate return (DST_AUST);
90*0Sstevel@tonic-gate
91*0Sstevel@tonic-gate if (strcmp(zonename, "WET") == 0)
92*0Sstevel@tonic-gate return (DST_WET);
93*0Sstevel@tonic-gate
94*0Sstevel@tonic-gate if (strcmp(zonename, "MET") == 0)
95*0Sstevel@tonic-gate return (DST_MET);
96*0Sstevel@tonic-gate
97*0Sstevel@tonic-gate if (strcmp(zonename, "EET") == 0)
98*0Sstevel@tonic-gate return (DST_EET);
99*0Sstevel@tonic-gate
100*0Sstevel@tonic-gate if (strncmp(zonename, "Canada/", 7) == 0)
101*0Sstevel@tonic-gate return (DST_CAN);
102*0Sstevel@tonic-gate
103*0Sstevel@tonic-gate if ((strcmp(zonename, "GB") == 0) ||
104*0Sstevel@tonic-gate (strcmp(zonename, "GB-Eire") == 0))
105*0Sstevel@tonic-gate return (DST_GB);
106*0Sstevel@tonic-gate
107*0Sstevel@tonic-gate /*
108*0Sstevel@tonic-gate * what's the corresponding DST_RUM: Rumanian DST?
109*0Sstevel@tonic-gate * There was not Rumanian timezone on 4.x.
110*0Sstevel@tonic-gate */
111*0Sstevel@tonic-gate
112*0Sstevel@tonic-gate if (strcmp(zonename, "Turkey") == 0)
113*0Sstevel@tonic-gate return (DST_TUR);
114*0Sstevel@tonic-gate
115*0Sstevel@tonic-gate /*
116*0Sstevel@tonic-gate * How do we differentiate between DST_AUST and DST_AUSTALT?
117*0Sstevel@tonic-gate * It seems that all of our current Australia timezones do
118*0Sstevel@tonic-gate * not have the 1986 shift, so we never will return DST_AUSTALT.
119*0Sstevel@tonic-gate */
120*0Sstevel@tonic-gate
121*0Sstevel@tonic-gate return (DST_NONE);
122*0Sstevel@tonic-gate }
123