1 /* $NetBSD: private.h,v 1.49 2016/11/05 01:08:58 christos Exp $ */ 2 3 #ifndef PRIVATE_H 4 #define PRIVATE_H 5 6 /* NetBSD defaults */ 7 #define TM_GMTOFF tm_gmtoff 8 #define TM_ZONE tm_zone 9 #define STD_INSPIRED 1 10 #define HAVE_LONG_DOUBLE 1 11 12 /* For when we build zic as a host tool. */ 13 #if HAVE_NBTOOL_CONFIG_H 14 #include "nbtool_config.h" 15 #endif 16 17 /* 18 ** This file is in the public domain, so clarified as of 19 ** 1996-06-05 by Arthur David Olson. 20 */ 21 22 /* 23 ** This header is for use ONLY with the time conversion code. 24 ** There is no guarantee that it will remain unchanged, 25 ** or that it will remain at all. 26 ** Do NOT copy it to any system include directory. 27 ** Thank you! 28 */ 29 30 /* This string was in the Factory zone through version 2016f. */ 31 #define GRANDPARENTED "Local time zone must be set--see zic manual page" 32 33 /* 34 ** Defaults for preprocessor symbols. 35 ** You can override these in your C compiler options, e.g. '-DHAVE_GETTEXT=1'. 36 */ 37 38 #ifndef HAVE_DECL_ASCTIME_R 39 #define HAVE_DECL_ASCTIME_R 1 40 #endif 41 42 #ifndef HAVE_GETTEXT 43 #define HAVE_GETTEXT 0 44 #endif /* !defined HAVE_GETTEXT */ 45 46 #ifndef HAVE_INCOMPATIBLE_CTIME_R 47 #define HAVE_INCOMPATIBLE_CTIME_R 0 48 #endif /* !defined INCOMPATIBLE_CTIME_R */ 49 50 #ifndef HAVE_LINK 51 #define HAVE_LINK 1 52 #endif /* !defined HAVE_LINK */ 53 54 #ifndef HAVE_POSIX_DECLS 55 #define HAVE_POSIX_DECLS 1 56 #endif 57 58 #ifndef HAVE_STRDUP 59 #define HAVE_STRDUP 1 60 #endif 61 62 #ifndef HAVE_SYMLINK 63 #define HAVE_SYMLINK 1 64 #endif /* !defined HAVE_SYMLINK */ 65 66 #ifndef HAVE_SYS_STAT_H 67 #define HAVE_SYS_STAT_H 1 68 #endif /* !defined HAVE_SYS_STAT_H */ 69 70 #ifndef HAVE_SYS_WAIT_H 71 #define HAVE_SYS_WAIT_H 1 72 #endif /* !defined HAVE_SYS_WAIT_H */ 73 74 #ifndef HAVE_UNISTD_H 75 #define HAVE_UNISTD_H 1 76 #endif /* !defined HAVE_UNISTD_H */ 77 78 #ifndef HAVE_UTMPX_H 79 #define HAVE_UTMPX_H 1 80 #endif /* !defined HAVE_UTMPX_H */ 81 82 #ifndef NETBSD_INSPIRED 83 # define NETBSD_INSPIRED 1 84 #endif 85 86 #if HAVE_INCOMPATIBLE_CTIME_R 87 #define asctime_r _incompatible_asctime_r 88 #define ctime_r _incompatible_ctime_r 89 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 90 91 /* Enable tm_gmtoff and tm_zone on GNUish systems. */ 92 #define _GNU_SOURCE 1 93 /* Fix asctime_r on Solaris 11. */ 94 #define _POSIX_PTHREAD_SEMANTICS 1 95 /* Enable strtoimax on pre-C99 Solaris 11. */ 96 #define __EXTENSIONS__ 1 97 98 /* 99 ** Nested includes 100 */ 101 102 #ifndef __NetBSD__ 103 /* Avoid clashes with NetBSD by renaming NetBSD's declarations. */ 104 #define localtime_rz sys_localtime_rz 105 #define mktime_z sys_mktime_z 106 #define posix2time_z sys_posix2time_z 107 #define time2posix_z sys_time2posix_z 108 #define timezone_t sys_timezone_t 109 #define tzalloc sys_tzalloc 110 #define tzfree sys_tzfree 111 #include <time.h> 112 #undef localtime_rz 113 #undef mktime_z 114 #undef posix2time_z 115 #undef time2posix_z 116 #undef timezone_t 117 #undef tzalloc 118 #undef tzfree 119 #else 120 #include "time.h" 121 #endif 122 123 #include "sys/types.h" /* for time_t */ 124 #include "stdio.h" 125 #include "string.h" 126 #include "limits.h" /* for CHAR_BIT et al. */ 127 #include "stdlib.h" 128 129 #include "errno.h" 130 131 #ifndef ENAMETOOLONG 132 # define ENAMETOOLONG EINVAL 133 #endif 134 #ifndef ENOTSUP 135 # define ENOTSUP EINVAL 136 #endif 137 #ifndef EOVERFLOW 138 # define EOVERFLOW EINVAL 139 #endif 140 141 #if HAVE_GETTEXT 142 #include "libintl.h" 143 #endif /* HAVE_GETTEXT */ 144 145 #if HAVE_SYS_WAIT_H 146 #include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ 147 #endif /* HAVE_SYS_WAIT_H */ 148 149 #ifndef WIFEXITED 150 #define WIFEXITED(status) (((status) & 0xff) == 0) 151 #endif /* !defined WIFEXITED */ 152 #ifndef WEXITSTATUS 153 #define WEXITSTATUS(status) (((status) >> 8) & 0xff) 154 #endif /* !defined WEXITSTATUS */ 155 156 #if HAVE_UNISTD_H 157 #include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ 158 #endif /* HAVE_UNISTD_H */ 159 160 #ifndef HAVE_STRFTIME_L 161 # if _POSIX_VERSION < 200809 162 # define HAVE_STRFTIME_L 0 163 # else 164 # define HAVE_STRFTIME_L 1 165 # endif 166 #endif 167 168 #ifndef F_OK 169 #define F_OK 0 170 #endif /* !defined F_OK */ 171 #ifndef R_OK 172 #define R_OK 4 173 #endif /* !defined R_OK */ 174 175 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ 176 #define is_digit(c) ((unsigned)(c) - '0' <= 9) 177 178 /* 179 ** Define HAVE_STDINT_H's default value here, rather than at the 180 ** start, since __GLIBC__ and INTMAX_MAX's values depend on 181 ** previously-included files. glibc 2.1 and Solaris 10 and later have 182 ** stdint.h, even with pre-C99 compilers. 183 */ 184 #ifndef HAVE_STDINT_H 185 #define HAVE_STDINT_H \ 186 (199901 <= __STDC_VERSION__ \ 187 || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \ 188 || __CYGWIN__ || INTMAX_MAX) 189 #endif /* !defined HAVE_STDINT_H */ 190 191 #if HAVE_STDINT_H 192 #include "stdint.h" 193 #endif /* !HAVE_STDINT_H */ 194 195 #ifndef HAVE_INTTYPES_H 196 # define HAVE_INTTYPES_H HAVE_STDINT_H 197 #endif 198 #if HAVE_INTTYPES_H 199 # include <inttypes.h> 200 #endif 201 202 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */ 203 #ifdef __LONG_LONG_MAX__ 204 # ifndef LLONG_MAX 205 # define LLONG_MAX __LONG_LONG_MAX__ 206 # endif 207 # ifndef LLONG_MIN 208 # define LLONG_MIN (-1 - LLONG_MAX) 209 # endif 210 #endif 211 212 #ifndef INT_FAST64_MAX 213 # ifdef LLONG_MAX 214 typedef long long int_fast64_t; 215 # define INT_FAST64_MIN LLONG_MIN 216 # define INT_FAST64_MAX LLONG_MAX 217 # else 218 # if LONG_MAX >> 31 < 0xffffffff 219 Please use a compiler that supports a 64-bit integer type (or wider); 220 you may need to compile with "-DHAVE_STDINT_H". 221 # endif 222 typedef long int_fast64_t; 223 # define INT_FAST64_MIN LONG_MIN 224 # define INT_FAST64_MAX LONG_MAX 225 # endif 226 #endif 227 228 #ifndef PRIdFAST64 229 # if INT_FAST64_MAX == LLONG_MAX 230 # define PRIdFAST64 "lld" 231 # else 232 # define PRIdFAST64 "ld" 233 # endif 234 #endif 235 236 #ifndef SCNdFAST64 237 # define SCNdFAST64 PRIdFAST64 238 #endif 239 240 #ifndef INT_FAST32_MAX 241 # if INT_MAX >> 31 == 0 242 typedef long int_fast32_t; 243 # define INT_FAST32_MAX LONG_MAX 244 # define INT_FAST32_MIN LONG_MIN 245 # else 246 typedef int int_fast32_t; 247 # define INT_FAST32_MAX INT_MAX 248 # define INT_FAST32_MIN INT_MIN 249 # endif 250 #endif 251 252 #ifndef INTMAX_MAX 253 # ifdef LLONG_MAX 254 typedef long long intmax_t; 255 # define strtoimax strtoll 256 # define INTMAX_MAX LLONG_MAX 257 # define INTMAX_MIN LLONG_MIN 258 # else 259 typedef long intmax_t; 260 # define strtoimax strtol 261 # define INTMAX_MAX LONG_MAX 262 # define INTMAX_MIN LONG_MIN 263 # endif 264 #endif 265 266 #ifndef PRIdMAX 267 # if INTMAX_MAX == LLONG_MAX 268 # define PRIdMAX "lld" 269 # else 270 # define PRIdMAX "ld" 271 # endif 272 #endif 273 274 #ifndef UINT_FAST64_MAX 275 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 276 typedef unsigned long long uint_fast64_t; 277 # else 278 # if ULONG_MAX >> 31 >> 1 < 0xffffffff 279 Please use a compiler that supports a 64-bit integer type (or wider); 280 you may need to compile with "-DHAVE_STDINT_H". 281 # endif 282 typedef unsigned long uint_fast64_t; 283 # endif 284 #endif 285 286 #ifndef UINTMAX_MAX 287 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 288 typedef unsigned long long uintmax_t; 289 # else 290 typedef unsigned long uintmax_t; 291 # endif 292 #endif 293 294 #ifndef PRIuMAX 295 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 296 # define PRIuMAX "llu" 297 # else 298 # define PRIuMAX "lu" 299 # endif 300 #endif 301 302 #ifndef INT32_MAX 303 #define INT32_MAX 0x7fffffff 304 #endif /* !defined INT32_MAX */ 305 #ifndef INT32_MIN 306 #define INT32_MIN (-1 - INT32_MAX) 307 #endif /* !defined INT32_MIN */ 308 309 #ifndef SIZE_MAX 310 #define SIZE_MAX ((size_t) -1) 311 #endif 312 313 #if 2 < __GNUC__ + (96 <= __GNUC_MINOR__) 314 # define ATTRIBUTE_CONST __attribute__ ((__const__)) 315 # define ATTRIBUTE_PURE __attribute__ ((__pure__)) 316 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) 317 #else 318 # define ATTRIBUTE_CONST /* empty */ 319 # define ATTRIBUTE_PURE /* empty */ 320 # define ATTRIBUTE_FORMAT(spec) /* empty */ 321 #endif 322 323 #if !defined _Noreturn && __STDC_VERSION__ < 201112 324 # if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) 325 # define _Noreturn __attribute__ ((__noreturn__)) 326 # else 327 # define _Noreturn 328 # endif 329 #endif 330 331 #if __STDC_VERSION__ < 199901 && !defined restrict 332 # define restrict /* empty */ 333 #endif 334 335 /* 336 ** Workarounds for compilers/systems. 337 */ 338 339 #ifndef EPOCH_LOCAL 340 # define EPOCH_LOCAL 0 341 #endif 342 #ifndef EPOCH_OFFSET 343 # define EPOCH_OFFSET 0 344 #endif 345 346 /* 347 ** Compile with -Dtime_tz=T to build the tz package with a private 348 ** time_t type equivalent to T rather than the system-supplied time_t. 349 ** This debugging feature can test unusual design decisions 350 ** (e.g., time_t wider than 'long', or unsigned time_t) even on 351 ** typical platforms. 352 */ 353 #if defined time_tz || EPOCH_LOCAL || EPOCH_OFFSET != 0 354 # ifdef LOCALTIME_IMPLEMENTATION 355 static time_t sys_time(time_t *x) { return time(x); } 356 # endif 357 358 typedef time_tz tz_time_t; 359 360 # undef ctime 361 # define ctime tz_ctime 362 # undef ctime_r 363 # define ctime_r tz_ctime_r 364 # undef difftime 365 # define difftime tz_difftime 366 # undef gmtime 367 # define gmtime tz_gmtime 368 # undef gmtime_r 369 # define gmtime_r tz_gmtime_r 370 # undef localtime 371 # define localtime tz_localtime 372 # undef localtime_r 373 # define localtime_r tz_localtime_r 374 # undef localtime_rz 375 # define localtime_rz tz_localtime_rz 376 # undef mktime 377 # define mktime tz_mktime 378 # undef mktime_z 379 # define mktime_z tz_mktime_z 380 # undef offtime 381 # define offtime tz_offtime 382 # undef posix2time 383 # define posix2time tz_posix2time 384 # undef posix2time_z 385 # define posix2time_z tz_posix2time_z 386 # undef time 387 # define time tz_time 388 # undef time2posix 389 # define time2posix tz_time2posix 390 # undef time2posix_z 391 # define time2posix_z tz_time2posix_z 392 # undef time_t 393 # define time_t tz_time_t 394 # undef timegm 395 # define timegm tz_timegm 396 # undef timelocal 397 # define timelocal tz_timelocal 398 # undef timeoff 399 # define timeoff tz_timeoff 400 # undef tzalloc 401 # define tzalloc tz_tzalloc 402 # undef tzfree 403 # define tzfree tz_tzfree 404 # undef tzset 405 # define tzset tz_tzset 406 # undef tzsetwall 407 # define tzsetwall tz_tzsetwall 408 409 char *ctime(time_t const *); 410 char *ctime_r(time_t const *, char *); 411 double difftime(time_t, time_t); 412 struct tm *gmtime(time_t const *); 413 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 414 struct tm *localtime(time_t const *); 415 struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 416 time_t mktime(struct tm *); 417 time_t time(time_t *); 418 void tzset(void); 419 #endif 420 421 #if !HAVE_DECL_ASCTIME_R && !defined asctime_r 422 extern char *asctime_r(struct tm const *restrict, char *restrict); 423 #endif 424 425 #if !HAVE_POSIX_DECLS 426 # if defined(USG_COMPAT) && !defined(__NetBSD__) 427 # ifndef timezone 428 extern long timezone; 429 # endif 430 # ifndef daylight 431 extern int daylight; 432 # endif 433 # endif 434 #endif 435 436 #if defined ALTZONE && !defined altzone 437 extern long altzone; 438 #endif 439 440 /* 441 ** The STD_INSPIRED functions are similar, but most also need 442 ** declarations if time_tz is defined. 443 */ 444 445 #ifdef STD_INSPIRED 446 # if !defined tzsetwall || defined time_tz 447 void tzsetwall(void); 448 # endif 449 # if !defined offtime || defined time_tz 450 struct tm *offtime(time_t const *, long); 451 # endif 452 # if !defined timegm || defined time_tz 453 time_t timegm(struct tm *); 454 # endif 455 # if !defined timelocal || defined time_tz 456 time_t timelocal(struct tm *); 457 # endif 458 # if !defined timeoff || defined time_tz 459 time_t timeoff(struct tm *, long); 460 # endif 461 # if !defined time2posix || defined time_tz 462 time_t time2posix(time_t); 463 # endif 464 # if !defined posix2time || defined time_tz 465 time_t posix2time(time_t); 466 # endif 467 #endif 468 469 /* Infer TM_ZONE on systems where this information is known, but suppress 470 guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */ 471 #if (defined __GLIBC__ \ 472 || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \ 473 || (defined __APPLE__ && defined __MACH__)) 474 # if !defined TM_GMTOFF && !defined NO_TM_GMTOFF 475 # define TM_GMTOFF tm_gmtoff 476 # endif 477 # if !defined TM_ZONE && !defined NO_TM_ZONE 478 # define TM_ZONE tm_zone 479 # endif 480 #endif 481 482 /* 483 ** Define functions that are ABI compatible with NetBSD but have 484 ** better prototypes. NetBSD 6.1.4 defines a pointer type timezone_t 485 ** and labors under the misconception that 'const timezone_t' is a 486 ** pointer to a constant. This use of 'const' is ineffective, so it 487 ** is not done here. What we call 'struct state' NetBSD calls 488 ** 'struct __state', but this is a private name so it doesn't matter. 489 */ 490 #ifndef __NetBSD__ 491 #if NETBSD_INSPIRED 492 typedef struct state *timezone_t; 493 struct tm *localtime_rz(timezone_t restrict, time_t const *restrict, 494 struct tm *restrict); 495 time_t mktime_z(timezone_t restrict, struct tm *restrict); 496 timezone_t tzalloc(char const *); 497 void tzfree(timezone_t); 498 # ifdef STD_INSPIRED 499 # if !defined posix2time_z || defined time_tz 500 time_t posix2time_z(timezone_t __restrict, time_t) ATTRIBUTE_PURE; 501 # endif 502 # if !defined time2posix_z || defined time_tz 503 time_t time2posix_z(timezone_t __restrict, time_t) ATTRIBUTE_PURE; 504 # endif 505 # endif 506 #endif 507 #endif 508 509 /* 510 ** Finally, some convenience items. 511 */ 512 513 #if __STDC_VERSION__ < 199901 514 # define true 1 515 # define false 0 516 # define bool int 517 #else 518 # include <stdbool.h> 519 #endif 520 521 #ifndef TYPE_BIT 522 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) 523 #endif /* !defined TYPE_BIT */ 524 525 #ifndef TYPE_SIGNED 526 #define TYPE_SIGNED(type) (/*CONSTCOND*/((type) -1) < 0) 527 #endif /* !defined TYPE_SIGNED */ 528 529 #define TWOS_COMPLEMENT(t) (/*CONSTCOND*/(t) ~ (t) 0 < 0) 530 531 /* Max and min values of the integer type T, of which only the bottom 532 B bits are used, and where the highest-order used bit is considered 533 to be a sign bit if T is signed. */ 534 #define MAXVAL(t, b) /*LINTED*/ \ 535 ((t) (((t) 1 << ((b) - 1 - TYPE_SIGNED(t))) \ 536 - 1 + ((t) 1 << ((b) - 1 - TYPE_SIGNED(t))))) 537 #define MINVAL(t, b) \ 538 ((t) (TYPE_SIGNED(t) ? - TWOS_COMPLEMENT(t) - MAXVAL(t, b) : 0)) 539 540 #ifdef LOCALTIME_IMPLEMENTATION 541 /* The minimum and maximum finite time values. This implementation 542 assumes no padding if time_t is signed and either the compiler is 543 pre-C11 or time_t is not one of the standard signed integer types. */ 544 #if 201112 <= __STDC_VERSION__ 545 static time_t const time_t_min 546 = (TYPE_SIGNED(time_t) 547 ? _Generic((time_t) 0, 548 signed char: SCHAR_MIN, short: SHRT_MIN, 549 int: INT_MIN, long: LONG_MIN, long long: LLONG_MIN, 550 default: MINVAL(time_t, TYPE_BIT(time_t))) 551 : 0); 552 static time_t const time_t_max 553 = (TYPE_SIGNED(time_t) 554 ? _Generic((time_t) 0, 555 signed char: SCHAR_MAX, short: SHRT_MAX, 556 int: INT_MAX, long: LONG_MAX, long long: LLONG_MAX, 557 default: MAXVAL(time_t, TYPE_BIT(time_t))) 558 : -1); 559 #else 560 static time_t const time_t_min = MINVAL(time_t, TYPE_BIT(time_t)); 561 static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t)); 562 #endif 563 #endif 564 565 #ifndef INT_STRLEN_MAXIMUM 566 /* 567 ** 302 / 1000 is log10(2.0) rounded up. 568 ** Subtract one for the sign bit if the type is signed; 569 ** add one for integer division truncation; 570 ** add one more for a minus sign if the type is signed. 571 */ 572 #define INT_STRLEN_MAXIMUM(type) \ 573 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 574 1 + TYPE_SIGNED(type)) 575 #endif /* !defined INT_STRLEN_MAXIMUM */ 576 577 /* 578 ** INITIALIZE(x) 579 */ 580 581 #if defined(__GNUC__) || defined(__lint__) 582 # define INITIALIZE(x) ((x) = 0) 583 #else 584 # define INITIALIZE(x) 585 #endif 586 587 #ifndef UNINIT_TRAP 588 # define UNINIT_TRAP 0 589 #endif 590 591 /* 592 ** For the benefit of GNU folk... 593 ** '_(MSGID)' uses the current locale's message library string for MSGID. 594 ** The default is to use gettext if available, and use MSGID otherwise. 595 */ 596 597 #ifndef _ 598 #if HAVE_GETTEXT 599 #define _(msgid) gettext(msgid) 600 #else /* !HAVE_GETTEXT */ 601 #define _(msgid) msgid 602 #endif /* !HAVE_GETTEXT */ 603 #endif /* !defined _ */ 604 605 #if !defined TZ_DOMAIN && defined HAVE_GETTEXT 606 # define TZ_DOMAIN "tz" 607 #endif 608 609 #if HAVE_INCOMPATIBLE_CTIME_R 610 #undef asctime_r 611 #undef ctime_r 612 char *asctime_r(struct tm const *, char *); 613 char *ctime_r(time_t const *, char *); 614 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 615 616 #ifndef YEARSPERREPEAT 617 #define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ 618 #endif /* !defined YEARSPERREPEAT */ 619 620 /* 621 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds. 622 */ 623 624 #ifndef AVGSECSPERYEAR 625 #define AVGSECSPERYEAR 31556952L 626 #endif /* !defined AVGSECSPERYEAR */ 627 628 #ifndef SECSPERREPEAT 629 #define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) 630 #endif /* !defined SECSPERREPEAT */ 631 632 #ifndef SECSPERREPEAT_BITS 633 #define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ 634 #endif /* !defined SECSPERREPEAT_BITS */ 635 636 #endif /* !defined PRIVATE_H */ 637