summaryrefslogtreecommitdiff
path: root/lib/libc/time/private.h
blob: 7dcb8a6d406d2491aacf14e4cd3b43ec4dd54fca (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
/*	$OpenBSD: private.h,v 1.21 2007/12/29 22:26:51 millert Exp $	*/
#ifndef PRIVATE_H

#define PRIVATE_H

/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson.
*/

/* OpenBSD defaults */
#define TM_GMTOFF		tm_gmtoff
#define TM_ZONE			tm_zone
#define PCTS			1
#define XPG4_1994_04_09		1
#define STD_INSPIRED		1
#define HAVE_STRERROR		1
#define HAVE_STDINT_H		1
#define NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU	1

/*
** This header is for use ONLY with the time conversion code.
** There is no guarantee that it will remain unchanged,
** or that it will remain at all.
** Do NOT copy it to any system include directory.
** Thank you!
*/

/*
** ID
*/

#if 0
#ifndef lint
#ifndef NOID
static char	privatehid[] = "@(#)private.h	8.5";
#endif /* !defined NOID */
#endif /* !defined lint */
#endif

#define GRANDPARENTED	"Local time zone must be set--see zic manual page"

/*
** Defaults for preprocessor symbols.
** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
*/

#ifndef HAVE_ADJTIME
#define HAVE_ADJTIME		1
#endif /* !defined HAVE_ADJTIME */

#ifndef HAVE_GETTEXT
#define HAVE_GETTEXT		0
#endif /* !defined HAVE_GETTEXT */

#ifndef HAVE_INCOMPATIBLE_CTIME_R
#define HAVE_INCOMPATIBLE_CTIME_R	0
#endif /* !defined INCOMPATIBLE_CTIME_R */

#ifndef HAVE_SETTIMEOFDAY
#define HAVE_SETTIMEOFDAY	3
#endif /* !defined HAVE_SETTIMEOFDAY */

#ifndef HAVE_STRERROR
#define HAVE_STRERROR		1
#endif /* !defined HAVE_STRERROR */

#ifndef HAVE_SYMLINK
#define HAVE_SYMLINK		1
#endif /* !defined HAVE_SYMLINK */

#ifndef HAVE_SYS_STAT_H
#define HAVE_SYS_STAT_H		1
#endif /* !defined HAVE_SYS_STAT_H */

#ifndef HAVE_SYS_WAIT_H
#define HAVE_SYS_WAIT_H		1
#endif /* !defined HAVE_SYS_WAIT_H */

#ifndef HAVE_UNISTD_H
#define HAVE_UNISTD_H		1
#endif /* !defined HAVE_UNISTD_H */

#ifndef HAVE_UTMPX_H
#define HAVE_UTMPX_H		0
#endif /* !defined HAVE_UTMPX_H */

#if 0
#ifndef LOCALE_HOME
#define LOCALE_HOME		"/usr/share/locale"
#endif /* !defined LOCALE_HOME */
#endif

#if HAVE_INCOMPATIBLE_CTIME_R
#define asctime_r _incompatible_asctime_r
#define ctime_r _incompatible_ctime_r
#endif /* HAVE_INCOMPATIBLE_CTIME_R */

/*
** Nested includes
*/

#include "sys/types.h"	/* for time_t */
#include "stdio.h"
#include "errno.h"
#include "string.h"
#include "limits.h"	/* for CHAR_BIT et al. */
#include "time.h"
#include "stdlib.h"

#if HAVE_GETTEXT
#include "libintl.h"
#endif /* HAVE_GETTEXT */

#if HAVE_SYS_WAIT_H
#include <sys/wait.h>	/* for WIFEXITED and WEXITSTATUS */
#endif /* HAVE_SYS_WAIT_H */

#ifndef WIFEXITED
#define WIFEXITED(status)	(((status) & 0xff) == 0)
#endif /* !defined WIFEXITED */
#ifndef WEXITSTATUS
#define WEXITSTATUS(status)	(((status) >> 8) & 0xff)
#endif /* !defined WEXITSTATUS */

#if HAVE_UNISTD_H
#include "unistd.h"	/* for F_OK, R_OK, and other POSIX goodness */
#endif /* HAVE_UNISTD_H */

#ifndef F_OK
#define F_OK	0
#endif /* !defined F_OK */
#ifndef R_OK
#define R_OK	4
#endif /* !defined R_OK */

/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
#define is_digit(c) ((unsigned)(c) - '0' <= 9)

#if HAVE_STDINT_H
#include "stdint.h"
#endif /* !HAVE_STDINT_H */

#ifndef INT_FAST64_MAX
/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX.  */
#if defined LLONG_MAX || defined __LONG_LONG_MAX__
typedef long long	int_fast64_t;
#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
#if (LONG_MAX >> 31) < 0xffffffff
Please use a compiler that supports a 64-bit integer type (or wider);
you may need to compile with "-DHAVE_STDINT_H".
#endif /* (LONG_MAX >> 31) < 0xffffffff */
typedef long		int_fast64_t;
#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
#endif /* !defined INT_FAST64_MAX */

#ifndef INT32_MAX
#define INT32_MAX 0x7fffffff
#endif /* !defined INT32_MAX */
#ifndef INT32_MIN
#define INT32_MIN (-1 - INT32_MAX)
#endif /* !defined INT32_MIN */

/*
** Workarounds for compilers/systems.
*/

#if 0
/*
** Some time.h implementations don't declare asctime_r.
** Others might define it as a macro.
** Fix the former without affecting the latter.
*/

#ifndef asctime_r
extern char *	asctime_r(struct tm const *, char *);
#endif
#endif

/*
** Private function declarations.
*/

char *		icalloc(int nelem, int elsize);
char *		icatalloc(char * old, const char * new);
char *		icpyalloc(const char * string);
char *		imalloc(int n);
void *		irealloc(void * pointer, int size);
void		icfree(char * pointer);
void		ifree(char * pointer);
const char *	scheck(const char * string, const char * format);

/*
** Finally, some convenience items.
*/

#ifndef TRUE
#define TRUE	1
#endif /* !defined TRUE */

#ifndef FALSE
#define FALSE	0
#endif /* !defined FALSE */

#ifndef TYPE_BIT
#define TYPE_BIT(type)	(sizeof (type) * CHAR_BIT)
#endif /* !defined TYPE_BIT */

#ifndef TYPE_SIGNED
#define TYPE_SIGNED(type) (((type) -1) < 0)
#endif /* !defined TYPE_SIGNED */

/*
** Since the definition of TYPE_INTEGRAL contains floating point numbers,
** it cannot be used in preprocessor directives.
*/

#ifndef TYPE_INTEGRAL
#define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
#endif /* !defined TYPE_INTEGRAL */

#ifndef INT_STRLEN_MAXIMUM
/*
** 302 / 1000 is log10(2.0) rounded up.
** Subtract one for the sign bit if the type is signed;
** add one for integer division truncation;
** add one more for a minus sign if the type is signed.
*/
#define INT_STRLEN_MAXIMUM(type) \
	((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
	1 + TYPE_SIGNED(type))
#endif /* !defined INT_STRLEN_MAXIMUM */

/*
** INITIALIZE(x)
*/

#ifndef GNUC_or_lint
#ifdef lint
#define GNUC_or_lint
#endif /* defined lint */
#ifndef lint
#ifdef __GNUC__
#define GNUC_or_lint
#endif /* defined __GNUC__ */
#endif /* !defined lint */
#endif /* !defined GNUC_or_lint */

#ifndef INITIALIZE
#ifdef GNUC_or_lint
#define INITIALIZE(x)	((x) = 0)
#endif /* defined GNUC_or_lint */
#ifndef GNUC_or_lint
#define INITIALIZE(x)
#endif /* !defined GNUC_or_lint */
#endif /* !defined INITIALIZE */

/*
** For the benefit of GNU folk...
** `_(MSGID)' uses the current locale's message library string for MSGID.
** The default is to use gettext if available, and use MSGID otherwise.
*/

#ifndef _
#if HAVE_GETTEXT
#define _(msgid) gettext(msgid)
#else /* !HAVE_GETTEXT */
#define _(msgid) msgid
#endif /* !HAVE_GETTEXT */
#endif /* !defined _ */

#ifndef TZ_DOMAIN
#define TZ_DOMAIN "tz"
#endif /* !defined TZ_DOMAIN */

#if HAVE_INCOMPATIBLE_CTIME_R
#undef asctime_r
#undef ctime_r
char *asctime_r(struct tm const *, char *);
char *ctime_r(time_t const *, char *);
#endif /* HAVE_INCOMPATIBLE_CTIME_R */

#ifndef YEARSPERREPEAT
#define YEARSPERREPEAT		400	/* years before a Gregorian repeat */
#endif /* !defined YEARSPERREPEAT */

/*
** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
*/

#ifndef AVGSECSPERYEAR
#define AVGSECSPERYEAR		31556952L
#endif /* !defined AVGSECSPERYEAR */

#ifndef SECSPERREPEAT
#define SECSPERREPEAT		((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
#endif /* !defined SECSPERREPEAT */

#ifndef SECSPERREPEAT_BITS
#define SECSPERREPEAT_BITS	34	/* ceil(log2(SECSPERREPEAT)) */
#endif /* !defined SECSPERREPEAT_BITS */

/*
** UNIX was a registered trademark of The Open Group in 2003.
*/

#endif /* !defined PRIVATE_H */