1 #ifndef PRIVATE_H 2 3 #define PRIVATE_H 4 5 /* 6 ** This file is in the public domain, so clarified as of 7 ** 1996-06-05 by Arthur David Olson. 8 */ 9 10 /* 11 ** This header is for use ONLY with the time conversion code. 12 ** There is no guarantee that it will remain unchanged, 13 ** or that it will remain at all. 14 ** Do NOT copy it to any system include directory. 15 ** Thank you! 16 */ 17 18 #define GRANDPARENTED "Local time zone must be set--see zic manual page" 19 20 /* 21 ** Defaults for preprocessor symbols. 22 ** You can override these in your C compiler options, e.g. '-DHAVE_GETTEXT=1'. 23 */ 24 25 #ifndef HAVE_GETTEXT 26 #define HAVE_GETTEXT 0 27 #endif /* !defined HAVE_GETTEXT */ 28 29 #ifndef HAVE_INCOMPATIBLE_CTIME_R 30 #define HAVE_INCOMPATIBLE_CTIME_R 0 31 #endif /* !defined INCOMPATIBLE_CTIME_R */ 32 33 #ifndef HAVE_LINK 34 #define HAVE_LINK 1 35 #endif /* !defined HAVE_LINK */ 36 37 #ifndef HAVE_STRDUP 38 #define HAVE_STRDUP 1 39 #endif 40 41 #ifndef HAVE_SYMLINK 42 #define HAVE_SYMLINK 1 43 #endif /* !defined HAVE_SYMLINK */ 44 45 #ifndef HAVE_SYS_STAT_H 46 #define HAVE_SYS_STAT_H 1 47 #endif /* !defined HAVE_SYS_STAT_H */ 48 49 #ifndef HAVE_SYS_WAIT_H 50 #define HAVE_SYS_WAIT_H 1 51 #endif /* !defined HAVE_SYS_WAIT_H */ 52 53 #ifndef HAVE_UNISTD_H 54 #define HAVE_UNISTD_H 1 55 #endif /* !defined HAVE_UNISTD_H */ 56 57 #ifndef HAVE_UTMPX_H 58 #define HAVE_UTMPX_H 1 59 #endif /* !defined HAVE_UTMPX_H */ 60 61 #ifndef NETBSD_INSPIRED 62 # define NETBSD_INSPIRED 1 63 #endif 64 65 #if HAVE_INCOMPATIBLE_CTIME_R 66 #define asctime_r _incompatible_asctime_r 67 #define ctime_r _incompatible_ctime_r 68 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 69 70 /* Enable tm_gmtoff and tm_zone on GNUish systems. */ 71 #define _GNU_SOURCE 1 72 /* Fix asctime_r on Solaris 10. */ 73 #define _POSIX_PTHREAD_SEMANTICS 1 74 /* Enable strtoimax on Solaris 10. */ 75 #define __EXTENSIONS__ 1 76 77 /* 78 ** Nested includes 79 */ 80 81 /* Avoid clashes with NetBSD by renaming NetBSD's declarations. */ 82 #define localtime_rz sys_localtime_rz 83 #define mktime_z sys_mktime_z 84 #define posix2time_z sys_posix2time_z 85 #define time2posix_z sys_time2posix_z 86 #define timezone_t sys_timezone_t 87 #define tzalloc sys_tzalloc 88 #define tzfree sys_tzfree 89 #include <time.h> 90 #undef localtime_rz 91 #undef mktime_z 92 #undef posix2time_z 93 #undef time2posix_z 94 #undef timezone_t 95 #undef tzalloc 96 #undef tzfree 97 98 #include "sys/types.h" /* for time_t */ 99 #include "stdio.h" 100 #include "string.h" 101 #include "limits.h" /* for CHAR_BIT et al. */ 102 #include "stdlib.h" 103 104 #include "errno.h" 105 106 #ifndef ENAMETOOLONG 107 # define ENAMETOOLONG EINVAL 108 #endif 109 #ifndef EOVERFLOW 110 # define EOVERFLOW EINVAL 111 #endif 112 113 #if HAVE_GETTEXT 114 #include "libintl.h" 115 #endif /* HAVE_GETTEXT */ 116 117 #if HAVE_SYS_WAIT_H 118 #include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ 119 #endif /* HAVE_SYS_WAIT_H */ 120 121 #ifndef WIFEXITED 122 #define WIFEXITED(status) (((status) & 0xff) == 0) 123 #endif /* !defined WIFEXITED */ 124 #ifndef WEXITSTATUS 125 #define WEXITSTATUS(status) (((status) >> 8) & 0xff) 126 #endif /* !defined WEXITSTATUS */ 127 128 #if HAVE_UNISTD_H 129 #include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ 130 #endif /* HAVE_UNISTD_H */ 131 132 #ifndef HAVE_STRFTIME_L 133 # if _POSIX_VERSION < 200809 134 # define HAVE_STRFTIME_L 0 135 # else 136 # define HAVE_STRFTIME_L 1 137 # endif 138 #endif 139 140 #ifndef F_OK 141 #define F_OK 0 142 #endif /* !defined F_OK */ 143 #ifndef R_OK 144 #define R_OK 4 145 #endif /* !defined R_OK */ 146 147 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ 148 #define is_digit(c) ((unsigned)(c) - '0' <= 9) 149 150 /* 151 ** Define HAVE_STDINT_H's default value here, rather than at the 152 ** start, since __GLIBC__'s value depends on previously-included 153 ** files. 154 ** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.) 155 */ 156 #ifndef HAVE_STDINT_H 157 #define HAVE_STDINT_H \ 158 (199901 <= __STDC_VERSION__ \ 159 || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \ 160 || __CYGWIN__) 161 #endif /* !defined HAVE_STDINT_H */ 162 163 #if HAVE_STDINT_H 164 #include "stdint.h" 165 #endif /* !HAVE_STDINT_H */ 166 167 #ifndef HAVE_INTTYPES_H 168 # define HAVE_INTTYPES_H HAVE_STDINT_H 169 #endif 170 #if HAVE_INTTYPES_H 171 # include <inttypes.h> 172 #endif 173 174 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */ 175 #ifdef __LONG_LONG_MAX__ 176 # ifndef LLONG_MAX 177 # define LLONG_MAX __LONG_LONG_MAX__ 178 # endif 179 # ifndef LLONG_MIN 180 # define LLONG_MIN (-1 - LLONG_MAX) 181 # endif 182 #endif 183 184 #ifndef INT_FAST64_MAX 185 # ifdef LLONG_MAX 186 typedef long long int_fast64_t; 187 # define INT_FAST64_MIN LLONG_MIN 188 # define INT_FAST64_MAX LLONG_MAX 189 # else 190 # if LONG_MAX >> 31 < 0xffffffff 191 Please use a compiler that supports a 64-bit integer type (or wider); 192 you may need to compile with "-DHAVE_STDINT_H". 193 # endif 194 typedef long int_fast64_t; 195 # define INT_FAST64_MIN LONG_MIN 196 # define INT_FAST64_MAX LONG_MAX 197 # endif 198 #endif 199 200 #ifndef SCNdFAST64 201 # if INT_FAST64_MAX == LLONG_MAX 202 # define SCNdFAST64 "lld" 203 # else 204 # define SCNdFAST64 "ld" 205 # endif 206 #endif 207 208 #ifndef INT_FAST32_MAX 209 # if INT_MAX >> 31 == 0 210 typedef long int_fast32_t; 211 # define INT_FAST32_MAX LONG_MAX 212 # define INT_FAST32_MIN LONG_MIN 213 # else 214 typedef int int_fast32_t; 215 # define INT_FAST32_MAX INT_MAX 216 # define INT_FAST32_MIN INT_MIN 217 # endif 218 #endif 219 220 #ifndef INTMAX_MAX 221 # ifdef LLONG_MAX 222 typedef long long intmax_t; 223 # define strtoimax strtoll 224 # define INTMAX_MAX LLONG_MAX 225 # define INTMAX_MIN LLONG_MIN 226 # else 227 typedef long intmax_t; 228 # define strtoimax strtol 229 # define INTMAX_MAX LONG_MAX 230 # define INTMAX_MIN LONG_MIN 231 # endif 232 #endif 233 234 #ifndef PRIdMAX 235 # if INTMAX_MAX == LLONG_MAX 236 # define PRIdMAX "lld" 237 # else 238 # define PRIdMAX "ld" 239 # endif 240 #endif 241 242 #ifndef UINT_FAST64_MAX 243 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 244 typedef unsigned long long uint_fast64_t; 245 # else 246 # if ULONG_MAX >> 31 >> 1 < 0xffffffff 247 Please use a compiler that supports a 64-bit integer type (or wider); 248 you may need to compile with "-DHAVE_STDINT_H". 249 # endif 250 typedef unsigned long uint_fast64_t; 251 # endif 252 #endif 253 254 #ifndef UINTMAX_MAX 255 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 256 typedef unsigned long long uintmax_t; 257 # else 258 typedef unsigned long uintmax_t; 259 # endif 260 #endif 261 262 #ifndef PRIuMAX 263 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 264 # define PRIuMAX "llu" 265 # else 266 # define PRIuMAX "lu" 267 # endif 268 #endif 269 270 #ifndef INT32_MAX 271 #define INT32_MAX 0x7fffffff 272 #endif /* !defined INT32_MAX */ 273 #ifndef INT32_MIN 274 #define INT32_MIN (-1 - INT32_MAX) 275 #endif /* !defined INT32_MIN */ 276 277 #ifndef SIZE_MAX 278 #define SIZE_MAX ((size_t) -1) 279 #endif 280 281 #if 2 < __GNUC__ + (96 <= __GNUC_MINOR__) 282 # define ATTRIBUTE_CONST __attribute__ ((const)) 283 # define ATTRIBUTE_PURE __attribute__ ((__pure__)) 284 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) 285 #else 286 # define ATTRIBUTE_CONST /* empty */ 287 # define ATTRIBUTE_PURE /* empty */ 288 # define ATTRIBUTE_FORMAT(spec) /* empty */ 289 #endif 290 291 #if !defined _Noreturn && __STDC_VERSION__ < 201112 292 # if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) 293 # define _Noreturn __attribute__ ((__noreturn__)) 294 # else 295 # define _Noreturn 296 # endif 297 #endif 298 299 #if __STDC_VERSION__ < 199901 && !defined restrict 300 # define restrict /* empty */ 301 #endif 302 303 /* 304 ** Workarounds for compilers/systems. 305 */ 306 307 /* 308 ** Compile with -Dtime_tz=T to build the tz package with a private 309 ** time_t type equivalent to T rather than the system-supplied time_t. 310 ** This debugging feature can test unusual design decisions 311 ** (e.g., time_t wider than 'long', or unsigned time_t) even on 312 ** typical platforms. 313 */ 314 #ifdef time_tz 315 # ifdef LOCALTIME_IMPLEMENTATION 316 static time_t sys_time(time_t *x) { return time(x); } 317 # endif 318 319 typedef time_tz tz_time_t; 320 321 # undef ctime 322 # define ctime tz_ctime 323 # undef ctime_r 324 # define ctime_r tz_ctime_r 325 # undef difftime 326 # define difftime tz_difftime 327 # undef gmtime 328 # define gmtime tz_gmtime 329 # undef gmtime_r 330 # define gmtime_r tz_gmtime_r 331 # undef localtime 332 # define localtime tz_localtime 333 # undef localtime_r 334 # define localtime_r tz_localtime_r 335 # undef localtime_rz 336 # define localtime_rz tz_localtime_rz 337 # undef mktime 338 # define mktime tz_mktime 339 # undef mktime_z 340 # define mktime_z tz_mktime_z 341 # undef offtime 342 # define offtime tz_offtime 343 # undef posix2time 344 # define posix2time tz_posix2time 345 # undef posix2time_z 346 # define posix2time_z tz_posix2time_z 347 # undef time 348 # define time tz_time 349 # undef time2posix 350 # define time2posix tz_time2posix 351 # undef time2posix_z 352 # define time2posix_z tz_time2posix_z 353 # undef time_t 354 # define time_t tz_time_t 355 # undef timegm 356 # define timegm tz_timegm 357 # undef timelocal 358 # define timelocal tz_timelocal 359 # undef timeoff 360 # define timeoff tz_timeoff 361 # undef tzalloc 362 # define tzalloc tz_tzalloc 363 # undef tzfree 364 # define tzfree tz_tzfree 365 # undef tzset 366 # define tzset tz_tzset 367 # undef tzsetwall 368 # define tzsetwall tz_tzsetwall 369 370 char *ctime(time_t const *); 371 char *ctime_r(time_t const *, char *); 372 double difftime(time_t, time_t); 373 struct tm *gmtime(time_t const *); 374 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 375 struct tm *localtime(time_t const *); 376 struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 377 time_t mktime(struct tm *); 378 time_t time(time_t *); 379 void tzset(void); 380 #endif 381 382 /* 383 ** Some time.h implementations don't declare asctime_r. 384 ** Others might define it as a macro. 385 ** Fix the former without affecting the latter. 386 ** Similarly for timezone, daylight, and altzone. 387 */ 388 389 #ifndef asctime_r 390 extern char * asctime_r(struct tm const *restrict, char *restrict); 391 #endif 392 393 #ifdef USG_COMPAT 394 # ifndef timezone 395 extern long timezone; 396 # endif 397 # ifndef daylight 398 extern int daylight; 399 # endif 400 #endif 401 #if defined ALTZONE && !defined altzone 402 extern long altzone; 403 #endif 404 405 /* 406 ** The STD_INSPIRED functions are similar, but most also need 407 ** declarations if time_tz is defined. 408 */ 409 410 #ifdef STD_INSPIRED 411 # if !defined tzsetwall || defined time_tz 412 void tzsetwall(void); 413 # endif 414 # if !defined offtime || defined time_tz 415 struct tm *offtime(time_t const *, long); 416 # endif 417 # if !defined timegm || defined time_tz 418 time_t timegm(struct tm *); 419 # endif 420 # if !defined timelocal || defined time_tz 421 time_t timelocal(struct tm *); 422 # endif 423 # if !defined timeoff || defined time_tz 424 time_t timeoff(struct tm *, long); 425 # endif 426 # if !defined time2posix || defined time_tz 427 time_t time2posix(time_t); 428 # endif 429 # if !defined posix2time || defined time_tz 430 time_t posix2time(time_t); 431 # endif 432 #endif 433 434 /* Infer TM_ZONE on systems where this information is known, but suppress 435 guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */ 436 #if (defined __GLIBC__ \ 437 || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \ 438 || (defined __APPLE__ && defined __MACH__)) 439 # if !defined TM_GMTOFF && !defined NO_TM_GMTOFF 440 # define TM_GMTOFF tm_gmtoff 441 # endif 442 # if !defined TM_ZONE && !defined NO_TM_ZONE 443 # define TM_ZONE tm_zone 444 # endif 445 #endif 446 447 /* 448 ** Define functions that are ABI compatible with NetBSD but have 449 ** better prototypes. NetBSD 6.1.4 defines a pointer type timezone_t 450 ** and labors under the misconception that 'const timezone_t' is a 451 ** pointer to a constant. This use of 'const' is ineffective, so it 452 ** is not done here. What we call 'struct state' NetBSD calls 453 ** 'struct __state', but this is a private name so it doesn't matter. 454 */ 455 #if NETBSD_INSPIRED 456 typedef struct state *timezone_t; 457 struct tm *localtime_rz(timezone_t restrict, time_t const *restrict, 458 struct tm *restrict); 459 time_t mktime_z(timezone_t restrict, struct tm *restrict); 460 timezone_t tzalloc(char const *); 461 void tzfree(timezone_t); 462 # ifdef STD_INSPIRED 463 # if !defined posix2time_z || defined time_tz 464 time_t posix2time_z(timezone_t, time_t) ATTRIBUTE_PURE; 465 # endif 466 # if !defined time2posix_z || defined time_tz 467 time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE; 468 # endif 469 # endif 470 #endif 471 472 /* 473 ** Finally, some convenience items. 474 */ 475 476 #if __STDC_VERSION__ < 199901 477 # define true 1 478 # define false 0 479 # define bool int 480 #else 481 # include <stdbool.h> 482 #endif 483 484 #ifndef TYPE_BIT 485 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) 486 #endif /* !defined TYPE_BIT */ 487 488 #ifndef TYPE_SIGNED 489 #define TYPE_SIGNED(type) (((type) -1) < 0) 490 #endif /* !defined TYPE_SIGNED */ 491 492 #define TWOS_COMPLEMENT(t) ((t) ~ (t) 0 < 0) 493 494 /* Max and min values of the integer type T, of which only the bottom 495 B bits are used, and where the highest-order used bit is considered 496 to be a sign bit if T is signed. */ 497 #define MAXVAL(t, b) \ 498 ((t) (((t) 1 << ((b) - 1 - TYPE_SIGNED(t))) \ 499 - 1 + ((t) 1 << ((b) - 1 - TYPE_SIGNED(t))))) 500 #define MINVAL(t, b) \ 501 ((t) (TYPE_SIGNED(t) ? - TWOS_COMPLEMENT(t) - MAXVAL(t, b) : 0)) 502 503 /* The minimum and maximum finite time values. This assumes no padding. */ 504 static time_t const time_t_min = MINVAL(time_t, TYPE_BIT(time_t)); 505 static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t)); 506 507 #ifndef INT_STRLEN_MAXIMUM 508 /* 509 ** 302 / 1000 is log10(2.0) rounded up. 510 ** Subtract one for the sign bit if the type is signed; 511 ** add one for integer division truncation; 512 ** add one more for a minus sign if the type is signed. 513 */ 514 #define INT_STRLEN_MAXIMUM(type) \ 515 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 516 1 + TYPE_SIGNED(type)) 517 #endif /* !defined INT_STRLEN_MAXIMUM */ 518 519 /* 520 ** INITIALIZE(x) 521 */ 522 523 #ifdef lint 524 # define INITIALIZE(x) ((x) = 0) 525 #else 526 # define INITIALIZE(x) 527 #endif 528 529 #ifndef UNINIT_TRAP 530 # define UNINIT_TRAP 0 531 #endif 532 533 /* 534 ** For the benefit of GNU folk... 535 ** '_(MSGID)' uses the current locale's message library string for MSGID. 536 ** The default is to use gettext if available, and use MSGID otherwise. 537 */ 538 539 #ifndef _ 540 #if HAVE_GETTEXT 541 #define _(msgid) gettext(msgid) 542 #else /* !HAVE_GETTEXT */ 543 #define _(msgid) msgid 544 #endif /* !HAVE_GETTEXT */ 545 #endif /* !defined _ */ 546 547 #if !defined TZ_DOMAIN && defined HAVE_GETTEXT 548 # define TZ_DOMAIN "tz" 549 #endif 550 551 #if HAVE_INCOMPATIBLE_CTIME_R 552 #undef asctime_r 553 #undef ctime_r 554 char *asctime_r(struct tm const *, char *); 555 char *ctime_r(time_t const *, char *); 556 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 557 558 #ifndef YEARSPERREPEAT 559 #define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ 560 #endif /* !defined YEARSPERREPEAT */ 561 562 /* 563 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds. 564 */ 565 566 #ifndef AVGSECSPERYEAR 567 #define AVGSECSPERYEAR 31556952L 568 #endif /* !defined AVGSECSPERYEAR */ 569 570 #ifndef SECSPERREPEAT 571 #define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) 572 #endif /* !defined SECSPERREPEAT */ 573 574 #ifndef SECSPERREPEAT_BITS 575 #define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ 576 #endif /* !defined SECSPERREPEAT_BITS */ 577 578 #endif /* !defined PRIVATE_H */ 579