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_DECL_ASCTIME_R 26 #define HAVE_DECL_ASCTIME_R 1 27 #endif 28 29 #ifndef HAVE_GETTEXT 30 #define HAVE_GETTEXT 0 31 #endif /* !defined HAVE_GETTEXT */ 32 33 #ifndef HAVE_INCOMPATIBLE_CTIME_R 34 #define HAVE_INCOMPATIBLE_CTIME_R 0 35 #endif /* !defined INCOMPATIBLE_CTIME_R */ 36 37 #ifndef HAVE_LINK 38 #define HAVE_LINK 1 39 #endif /* !defined HAVE_LINK */ 40 41 #ifndef HAVE_POSIX_DECLS 42 #define HAVE_POSIX_DECLS 1 43 #endif 44 45 #ifndef HAVE_STRDUP 46 #define HAVE_STRDUP 1 47 #endif 48 49 #ifndef HAVE_SYMLINK 50 #define HAVE_SYMLINK 1 51 #endif /* !defined HAVE_SYMLINK */ 52 53 #ifndef HAVE_SYS_STAT_H 54 #define HAVE_SYS_STAT_H 1 55 #endif /* !defined HAVE_SYS_STAT_H */ 56 57 #ifndef HAVE_SYS_WAIT_H 58 #define HAVE_SYS_WAIT_H 1 59 #endif /* !defined HAVE_SYS_WAIT_H */ 60 61 #ifndef HAVE_UNISTD_H 62 #define HAVE_UNISTD_H 1 63 #endif /* !defined HAVE_UNISTD_H */ 64 65 #ifndef HAVE_UTMPX_H 66 #define HAVE_UTMPX_H 1 67 #endif /* !defined HAVE_UTMPX_H */ 68 69 #ifndef NETBSD_INSPIRED 70 # define NETBSD_INSPIRED 1 71 #endif 72 73 #if HAVE_INCOMPATIBLE_CTIME_R 74 #define asctime_r _incompatible_asctime_r 75 #define ctime_r _incompatible_ctime_r 76 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 77 78 /* Enable tm_gmtoff and tm_zone on GNUish systems. */ 79 #define _GNU_SOURCE 1 80 /* Fix asctime_r on Solaris 10. */ 81 #define _POSIX_PTHREAD_SEMANTICS 1 82 /* Enable strtoimax on Solaris 10. */ 83 #define __EXTENSIONS__ 1 84 85 /* 86 ** Nested includes 87 */ 88 89 /* Avoid clashes with NetBSD by renaming NetBSD's declarations. */ 90 #define localtime_rz sys_localtime_rz 91 #define mktime_z sys_mktime_z 92 #define posix2time_z sys_posix2time_z 93 #define time2posix_z sys_time2posix_z 94 #define timezone_t sys_timezone_t 95 #define tzalloc sys_tzalloc 96 #define tzfree sys_tzfree 97 #include <time.h> 98 #undef localtime_rz 99 #undef mktime_z 100 #undef posix2time_z 101 #undef time2posix_z 102 #undef timezone_t 103 #undef tzalloc 104 #undef tzfree 105 106 #include "sys/types.h" /* for time_t */ 107 #include "stdio.h" 108 #include "string.h" 109 #include "limits.h" /* for CHAR_BIT et al. */ 110 #include "stdlib.h" 111 112 #include "errno.h" 113 114 #ifndef ENAMETOOLONG 115 # define ENAMETOOLONG EINVAL 116 #endif 117 #ifndef ENOTSUP 118 # define ENOTSUP EINVAL 119 #endif 120 #ifndef EOVERFLOW 121 # define EOVERFLOW EINVAL 122 #endif 123 124 #if HAVE_GETTEXT 125 #include "libintl.h" 126 #endif /* HAVE_GETTEXT */ 127 128 #if HAVE_SYS_WAIT_H 129 #include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ 130 #endif /* HAVE_SYS_WAIT_H */ 131 132 #ifndef WIFEXITED 133 #define WIFEXITED(status) (((status) & 0xff) == 0) 134 #endif /* !defined WIFEXITED */ 135 #ifndef WEXITSTATUS 136 #define WEXITSTATUS(status) (((status) >> 8) & 0xff) 137 #endif /* !defined WEXITSTATUS */ 138 139 #if HAVE_UNISTD_H 140 #include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ 141 #endif /* HAVE_UNISTD_H */ 142 143 #ifndef HAVE_STRFTIME_L 144 # if _POSIX_VERSION < 200809 145 # define HAVE_STRFTIME_L 0 146 # else 147 # define HAVE_STRFTIME_L 1 148 # endif 149 #endif 150 151 #ifndef F_OK 152 #define F_OK 0 153 #endif /* !defined F_OK */ 154 #ifndef R_OK 155 #define R_OK 4 156 #endif /* !defined R_OK */ 157 158 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ 159 #define is_digit(c) ((unsigned)(c) - '0' <= 9) 160 161 /* 162 ** Define HAVE_STDINT_H's default value here, rather than at the 163 ** start, since __GLIBC__'s value depends on previously-included 164 ** files. 165 ** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.) 166 */ 167 #ifndef HAVE_STDINT_H 168 #define HAVE_STDINT_H \ 169 (199901 <= __STDC_VERSION__ \ 170 || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \ 171 || __CYGWIN__) 172 #endif /* !defined HAVE_STDINT_H */ 173 174 #if HAVE_STDINT_H 175 #include "stdint.h" 176 #endif /* !HAVE_STDINT_H */ 177 178 #ifndef HAVE_INTTYPES_H 179 # define HAVE_INTTYPES_H HAVE_STDINT_H 180 #endif 181 #if HAVE_INTTYPES_H 182 # include <inttypes.h> 183 #endif 184 185 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */ 186 #ifdef __LONG_LONG_MAX__ 187 # ifndef LLONG_MAX 188 # define LLONG_MAX __LONG_LONG_MAX__ 189 # endif 190 # ifndef LLONG_MIN 191 # define LLONG_MIN (-1 - LLONG_MAX) 192 # endif 193 #endif 194 195 #ifndef INT_FAST64_MAX 196 # ifdef LLONG_MAX 197 typedef long long int_fast64_t; 198 # define INT_FAST64_MIN LLONG_MIN 199 # define INT_FAST64_MAX LLONG_MAX 200 # else 201 # if LONG_MAX >> 31 < 0xffffffff 202 Please use a compiler that supports a 64-bit integer type (or wider); 203 you may need to compile with "-DHAVE_STDINT_H". 204 # endif 205 typedef long int_fast64_t; 206 # define INT_FAST64_MIN LONG_MIN 207 # define INT_FAST64_MAX LONG_MAX 208 # endif 209 #endif 210 211 #ifndef SCNdFAST64 212 # if INT_FAST64_MAX == LLONG_MAX 213 # define SCNdFAST64 "lld" 214 # else 215 # define SCNdFAST64 "ld" 216 # endif 217 #endif 218 219 #ifndef INT_FAST32_MAX 220 # if INT_MAX >> 31 == 0 221 typedef long int_fast32_t; 222 # define INT_FAST32_MAX LONG_MAX 223 # define INT_FAST32_MIN LONG_MIN 224 # else 225 typedef int int_fast32_t; 226 # define INT_FAST32_MAX INT_MAX 227 # define INT_FAST32_MIN INT_MIN 228 # endif 229 #endif 230 231 #ifndef INTMAX_MAX 232 # ifdef LLONG_MAX 233 typedef long long intmax_t; 234 # define strtoimax strtoll 235 # define INTMAX_MAX LLONG_MAX 236 # define INTMAX_MIN LLONG_MIN 237 # else 238 typedef long intmax_t; 239 # define strtoimax strtol 240 # define INTMAX_MAX LONG_MAX 241 # define INTMAX_MIN LONG_MIN 242 # endif 243 #endif 244 245 #ifndef PRIdMAX 246 # if INTMAX_MAX == LLONG_MAX 247 # define PRIdMAX "lld" 248 # else 249 # define PRIdMAX "ld" 250 # endif 251 #endif 252 253 #ifndef UINT_FAST64_MAX 254 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 255 typedef unsigned long long uint_fast64_t; 256 # else 257 # if ULONG_MAX >> 31 >> 1 < 0xffffffff 258 Please use a compiler that supports a 64-bit integer type (or wider); 259 you may need to compile with "-DHAVE_STDINT_H". 260 # endif 261 typedef unsigned long uint_fast64_t; 262 # endif 263 #endif 264 265 #ifndef UINTMAX_MAX 266 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 267 typedef unsigned long long uintmax_t; 268 # else 269 typedef unsigned long uintmax_t; 270 # endif 271 #endif 272 273 #ifndef PRIuMAX 274 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 275 # define PRIuMAX "llu" 276 # else 277 # define PRIuMAX "lu" 278 # endif 279 #endif 280 281 #ifndef INT32_MAX 282 #define INT32_MAX 0x7fffffff 283 #endif /* !defined INT32_MAX */ 284 #ifndef INT32_MIN 285 #define INT32_MIN (-1 - INT32_MAX) 286 #endif /* !defined INT32_MIN */ 287 288 #ifndef SIZE_MAX 289 #define SIZE_MAX ((size_t) -1) 290 #endif 291 292 #if 2 < __GNUC__ + (96 <= __GNUC_MINOR__) 293 # define ATTRIBUTE_CONST __attribute__ ((const)) 294 # define ATTRIBUTE_PURE __attribute__ ((__pure__)) 295 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) 296 #else 297 # define ATTRIBUTE_CONST /* empty */ 298 # define ATTRIBUTE_PURE /* empty */ 299 # define ATTRIBUTE_FORMAT(spec) /* empty */ 300 #endif 301 302 #if !defined _Noreturn && __STDC_VERSION__ < 201112 303 # if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) 304 # define _Noreturn __attribute__ ((__noreturn__)) 305 # else 306 # define _Noreturn 307 # endif 308 #endif 309 310 #if __STDC_VERSION__ < 199901 && !defined restrict 311 # define restrict /* empty */ 312 #endif 313 314 /* 315 ** Workarounds for compilers/systems. 316 */ 317 318 /* 319 ** Compile with -Dtime_tz=T to build the tz package with a private 320 ** time_t type equivalent to T rather than the system-supplied time_t. 321 ** This debugging feature can test unusual design decisions 322 ** (e.g., time_t wider than 'long', or unsigned time_t) even on 323 ** typical platforms. 324 */ 325 #ifdef time_tz 326 # ifdef LOCALTIME_IMPLEMENTATION 327 static time_t sys_time(time_t *x) { return time(x); } 328 # endif 329 330 typedef time_tz tz_time_t; 331 332 # undef ctime 333 # define ctime tz_ctime 334 # undef ctime_r 335 # define ctime_r tz_ctime_r 336 # undef difftime 337 # define difftime tz_difftime 338 # undef gmtime 339 # define gmtime tz_gmtime 340 # undef gmtime_r 341 # define gmtime_r tz_gmtime_r 342 # undef localtime 343 # define localtime tz_localtime 344 # undef localtime_r 345 # define localtime_r tz_localtime_r 346 # undef localtime_rz 347 # define localtime_rz tz_localtime_rz 348 # undef mktime 349 # define mktime tz_mktime 350 # undef mktime_z 351 # define mktime_z tz_mktime_z 352 # undef offtime 353 # define offtime tz_offtime 354 # undef posix2time 355 # define posix2time tz_posix2time 356 # undef posix2time_z 357 # define posix2time_z tz_posix2time_z 358 # undef time 359 # define time tz_time 360 # undef time2posix 361 # define time2posix tz_time2posix 362 # undef time2posix_z 363 # define time2posix_z tz_time2posix_z 364 # undef time_t 365 # define time_t tz_time_t 366 # undef timegm 367 # define timegm tz_timegm 368 # undef timelocal 369 # define timelocal tz_timelocal 370 # undef timeoff 371 # define timeoff tz_timeoff 372 # undef tzalloc 373 # define tzalloc tz_tzalloc 374 # undef tzfree 375 # define tzfree tz_tzfree 376 # undef tzset 377 # define tzset tz_tzset 378 # undef tzsetwall 379 # define tzsetwall tz_tzsetwall 380 381 char *ctime(time_t const *); 382 char *ctime_r(time_t const *, char *); 383 double difftime(time_t, time_t); 384 struct tm *gmtime(time_t const *); 385 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 386 struct tm *localtime(time_t const *); 387 struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 388 time_t mktime(struct tm *); 389 time_t time(time_t *); 390 void tzset(void); 391 #endif 392 393 #if !HAVE_DECL_ASCTIME_R && !defined asctime_r 394 extern char *asctime_r(struct tm const *restrict, char *restrict); 395 #endif 396 397 #if !HAVE_POSIX_DECLS 398 # ifdef USG_COMPAT 399 # ifndef timezone 400 extern long timezone; 401 # endif 402 # ifndef daylight 403 extern int daylight; 404 # endif 405 # endif 406 #endif 407 408 #if defined ALTZONE && !defined altzone 409 extern long altzone; 410 #endif 411 412 /* 413 ** The STD_INSPIRED functions are similar, but most also need 414 ** declarations if time_tz is defined. 415 */ 416 417 #ifdef STD_INSPIRED 418 # if !defined tzsetwall || defined time_tz 419 void tzsetwall(void); 420 # endif 421 # if !defined offtime || defined time_tz 422 struct tm *offtime(time_t const *, long); 423 # endif 424 # if !defined timegm || defined time_tz 425 time_t timegm(struct tm *); 426 # endif 427 # if !defined timelocal || defined time_tz 428 time_t timelocal(struct tm *); 429 # endif 430 # if !defined timeoff || defined time_tz 431 time_t timeoff(struct tm *, long); 432 # endif 433 # if !defined time2posix || defined time_tz 434 time_t time2posix(time_t); 435 # endif 436 # if !defined posix2time || defined time_tz 437 time_t posix2time(time_t); 438 # endif 439 #endif 440 441 /* Infer TM_ZONE on systems where this information is known, but suppress 442 guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */ 443 #if (defined __GLIBC__ \ 444 || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \ 445 || (defined __APPLE__ && defined __MACH__)) 446 # if !defined TM_GMTOFF && !defined NO_TM_GMTOFF 447 # define TM_GMTOFF tm_gmtoff 448 # endif 449 # if !defined TM_ZONE && !defined NO_TM_ZONE 450 # define TM_ZONE tm_zone 451 # endif 452 #endif 453 454 /* 455 ** Define functions that are ABI compatible with NetBSD but have 456 ** better prototypes. NetBSD 6.1.4 defines a pointer type timezone_t 457 ** and labors under the misconception that 'const timezone_t' is a 458 ** pointer to a constant. This use of 'const' is ineffective, so it 459 ** is not done here. What we call 'struct state' NetBSD calls 460 ** 'struct __state', but this is a private name so it doesn't matter. 461 */ 462 #if NETBSD_INSPIRED 463 typedef struct state *timezone_t; 464 struct tm *localtime_rz(timezone_t restrict, time_t const *restrict, 465 struct tm *restrict); 466 time_t mktime_z(timezone_t restrict, struct tm *restrict); 467 timezone_t tzalloc(char const *); 468 void tzfree(timezone_t); 469 # ifdef STD_INSPIRED 470 # if !defined posix2time_z || defined time_tz 471 time_t posix2time_z(timezone_t, time_t) ATTRIBUTE_PURE; 472 # endif 473 # if !defined time2posix_z || defined time_tz 474 time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE; 475 # endif 476 # endif 477 #endif 478 479 /* 480 ** Finally, some convenience items. 481 */ 482 483 #if __STDC_VERSION__ < 199901 484 # define true 1 485 # define false 0 486 # define bool int 487 #else 488 # include <stdbool.h> 489 #endif 490 491 #ifndef TYPE_BIT 492 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) 493 #endif /* !defined TYPE_BIT */ 494 495 #ifndef TYPE_SIGNED 496 #define TYPE_SIGNED(type) (((type) -1) < 0) 497 #endif /* !defined TYPE_SIGNED */ 498 499 #define TWOS_COMPLEMENT(t) ((t) ~ (t) 0 < 0) 500 501 /* Max and min values of the integer type T, of which only the bottom 502 B bits are used, and where the highest-order used bit is considered 503 to be a sign bit if T is signed. */ 504 #define MAXVAL(t, b) \ 505 ((t) (((t) 1 << ((b) - 1 - TYPE_SIGNED(t))) \ 506 - 1 + ((t) 1 << ((b) - 1 - TYPE_SIGNED(t))))) 507 #define MINVAL(t, b) \ 508 ((t) (TYPE_SIGNED(t) ? - TWOS_COMPLEMENT(t) - MAXVAL(t, b) : 0)) 509 510 /* The minimum and maximum finite time values. This assumes no padding. */ 511 static time_t const time_t_min = MINVAL(time_t, TYPE_BIT(time_t)); 512 static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t)); 513 514 #ifndef INT_STRLEN_MAXIMUM 515 /* 516 ** 302 / 1000 is log10(2.0) rounded up. 517 ** Subtract one for the sign bit if the type is signed; 518 ** add one for integer division truncation; 519 ** add one more for a minus sign if the type is signed. 520 */ 521 #define INT_STRLEN_MAXIMUM(type) \ 522 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 523 1 + TYPE_SIGNED(type)) 524 #endif /* !defined INT_STRLEN_MAXIMUM */ 525 526 /* 527 ** INITIALIZE(x) 528 */ 529 530 #ifdef lint 531 # define INITIALIZE(x) ((x) = 0) 532 #else 533 # define INITIALIZE(x) 534 #endif 535 536 #ifndef UNINIT_TRAP 537 # define UNINIT_TRAP 0 538 #endif 539 540 /* 541 ** For the benefit of GNU folk... 542 ** '_(MSGID)' uses the current locale's message library string for MSGID. 543 ** The default is to use gettext if available, and use MSGID otherwise. 544 */ 545 546 #ifndef _ 547 #if HAVE_GETTEXT 548 #define _(msgid) gettext(msgid) 549 #else /* !HAVE_GETTEXT */ 550 #define _(msgid) msgid 551 #endif /* !HAVE_GETTEXT */ 552 #endif /* !defined _ */ 553 554 #if !defined TZ_DOMAIN && defined HAVE_GETTEXT 555 # define TZ_DOMAIN "tz" 556 #endif 557 558 #if HAVE_INCOMPATIBLE_CTIME_R 559 #undef asctime_r 560 #undef ctime_r 561 char *asctime_r(struct tm const *, char *); 562 char *ctime_r(time_t const *, char *); 563 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 564 565 #ifndef YEARSPERREPEAT 566 #define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ 567 #endif /* !defined YEARSPERREPEAT */ 568 569 /* 570 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds. 571 */ 572 573 #ifndef AVGSECSPERYEAR 574 #define AVGSECSPERYEAR 31556952L 575 #endif /* !defined AVGSECSPERYEAR */ 576 577 #ifndef SECSPERREPEAT 578 #define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) 579 #endif /* !defined SECSPERREPEAT */ 580 581 #ifndef SECSPERREPEAT_BITS 582 #define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ 583 #endif /* !defined SECSPERREPEAT_BITS */ 584 585 #endif /* !defined PRIVATE_H */ 586
