1 /* $NetBSD: private.h,v 1.39 2015/03/24 20:01:18 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 #define GRANDPARENTED "Local time zone must be set--see zic manual page" 31 32 /* 33 ** Defaults for preprocessor symbols. 34 ** You can override these in your C compiler options, e.g. '-DHAVE_ADJTIME=0'. 35 */ 36 37 #ifndef HAVE_ADJTIME 38 #define HAVE_ADJTIME 1 39 #endif /* !defined HAVE_ADJTIME */ 40 41 #ifndef HAVE_GETTEXT 42 #define HAVE_GETTEXT 0 43 #endif /* !defined HAVE_GETTEXT */ 44 45 #ifndef HAVE_INCOMPATIBLE_CTIME_R 46 #define HAVE_INCOMPATIBLE_CTIME_R 0 47 #endif /* !defined INCOMPATIBLE_CTIME_R */ 48 49 #ifndef HAVE_LINK 50 #define HAVE_LINK 1 51 #endif /* !defined HAVE_LINK */ 52 53 #ifndef HAVE_SETTIMEOFDAY 54 #define HAVE_SETTIMEOFDAY 3 55 #endif /* !defined HAVE_SETTIMEOFDAY */ 56 57 #ifndef HAVE_SYMLINK 58 #define HAVE_SYMLINK 1 59 #endif /* !defined HAVE_SYMLINK */ 60 61 #ifndef HAVE_SYS_STAT_H 62 #define HAVE_SYS_STAT_H 1 63 #endif /* !defined HAVE_SYS_STAT_H */ 64 65 #ifndef HAVE_SYS_WAIT_H 66 #define HAVE_SYS_WAIT_H 1 67 #endif /* !defined HAVE_SYS_WAIT_H */ 68 69 #ifndef HAVE_UNISTD_H 70 #define HAVE_UNISTD_H 1 71 #endif /* !defined HAVE_UNISTD_H */ 72 73 #ifndef HAVE_UTMPX_H 74 #define HAVE_UTMPX_H 0 75 #endif /* !defined HAVE_UTMPX_H */ 76 77 #ifndef NETBSD_INSPIRED 78 # define NETBSD_INSPIRED 1 79 #endif 80 81 #if HAVE_INCOMPATIBLE_CTIME_R 82 #define asctime_r _incompatible_asctime_r 83 #define ctime_r _incompatible_ctime_r 84 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 85 86 /* Enable tm_gmtoff and tm_zone on GNUish systems. */ 87 #define _GNU_SOURCE 1 88 /* Fix asctime_r on Solaris 10. */ 89 #define _POSIX_PTHREAD_SEMANTICS 1 90 /* Enable strtoimax on Solaris 10. */ 91 #define __EXTENSIONS__ 1 92 93 /* 94 ** Nested includes 95 */ 96 97 #ifndef __NetBSD__ 98 /* Avoid clashes with NetBSD by renaming NetBSD's declarations. */ 99 #define localtime_rz sys_localtime_rz 100 #define mktime_z sys_mktime_z 101 #define posix2time_z sys_posix2time_z 102 #define time2posix_z sys_time2posix_z 103 #define timezone_t sys_timezone_t 104 #define tzalloc sys_tzalloc 105 #define tzfree sys_tzfree 106 #include <time.h> 107 #undef localtime_rz 108 #undef mktime_z 109 #undef posix2time_z 110 #undef time2posix_z 111 #undef timezone_t 112 #undef tzalloc 113 #undef tzfree 114 #else 115 #include "time.h" 116 #endif 117 118 #include "sys/types.h" /* for time_t */ 119 #include "stdio.h" 120 #include "string.h" 121 #include "limits.h" /* for CHAR_BIT et al. */ 122 #include "stdlib.h" 123 124 #include "errno.h" 125 126 #ifndef ENAMETOOLONG 127 # define ENAMETOOLONG EINVAL 128 #endif 129 #ifndef EOVERFLOW 130 # define EOVERFLOW EINVAL 131 #endif 132 133 #if HAVE_GETTEXT 134 #include "libintl.h" 135 #endif /* HAVE_GETTEXT */ 136 137 #if HAVE_SYS_WAIT_H 138 #include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ 139 #endif /* HAVE_SYS_WAIT_H */ 140 141 #ifndef WIFEXITED 142 #define WIFEXITED(status) (((status) & 0xff) == 0) 143 #endif /* !defined WIFEXITED */ 144 #ifndef WEXITSTATUS 145 #define WEXITSTATUS(status) (((status) >> 8) & 0xff) 146 #endif /* !defined WEXITSTATUS */ 147 148 #if HAVE_UNISTD_H 149 #include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ 150 #endif /* HAVE_UNISTD_H */ 151 152 #ifndef HAVE_STRFTIME_L 153 # if _POSIX_VERSION < 200809 154 # define HAVE_STRFTIME_L 0 155 # else 156 # define HAVE_STRFTIME_L 1 157 # endif 158 #endif 159 160 #ifndef F_OK 161 #define F_OK 0 162 #endif /* !defined F_OK */ 163 #ifndef R_OK 164 #define R_OK 4 165 #endif /* !defined R_OK */ 166 167 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ 168 #define is_digit(c) ((unsigned)(c) - '0' <= 9) 169 170 /* 171 ** Define HAVE_STDINT_H's default value here, rather than at the 172 ** start, since __GLIBC__'s value depends on previously-included 173 ** files. 174 ** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.) 175 */ 176 #ifndef HAVE_STDINT_H 177 #define HAVE_STDINT_H \ 178 (199901 <= __STDC_VERSION__ \ 179 || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \ 180 || __CYGWIN__) 181 #endif /* !defined HAVE_STDINT_H */ 182 183 #if HAVE_STDINT_H 184 #include "stdint.h" 185 #endif /* !HAVE_STDINT_H */ 186 187 #ifndef HAVE_INTTYPES_H 188 # define HAVE_INTTYPES_H HAVE_STDINT_H 189 #endif 190 #if HAVE_INTTYPES_H 191 # include <inttypes.h> 192 #endif 193 194 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */ 195 #ifdef __LONG_LONG_MAX__ 196 # ifndef LLONG_MAX 197 # define LLONG_MAX __LONG_LONG_MAX__ 198 # endif 199 # ifndef LLONG_MIN 200 # define LLONG_MIN (-1 - LLONG_MAX) 201 # endif 202 #endif 203 204 #ifndef INT_FAST64_MAX 205 # ifdef LLONG_MAX 206 typedef long long int_fast64_t; 207 # define INT_FAST64_MIN LLONG_MIN 208 # define INT_FAST64_MAX LLONG_MAX 209 # else 210 # if (LONG_MAX >> 31) < 0xffffffff 211 Please use a compiler that supports a 64-bit integer type (or wider); 212 you may need to compile with "-DHAVE_STDINT_H". 213 # endif 214 typedef long int_fast64_t; 215 # define INT_FAST64_MIN LONG_MIN 216 # define INT_FAST64_MAX LONG_MAX 217 # endif 218 #endif 219 220 #ifndef SCNdFAST64 221 # if INT_FAST64_MAX == LLONG_MAX 222 # define SCNdFAST64 "lld" 223 # else 224 # define SCNdFAST64 "ld" 225 # endif 226 #endif 227 228 #ifndef INT_FAST32_MAX 229 # if INT_MAX >> 31 == 0 230 typedef long int_fast32_t; 231 # define INT_FAST32_MAX LONG_MAX 232 # define INT_FAST32_MIN LONG_MIN 233 # else 234 typedef int int_fast32_t; 235 # define INT_FAST32_MAX INT_MAX 236 # define INT_FAST32_MIN INT_MIN 237 # endif 238 #endif 239 240 #ifndef INTMAX_MAX 241 # ifdef LLONG_MAX 242 typedef long long intmax_t; 243 # define strtoimax strtoll 244 # define INTMAX_MAX LLONG_MAX 245 # define INTMAX_MIN LLONG_MIN 246 # else 247 typedef long intmax_t; 248 # define strtoimax strtol 249 # define INTMAX_MAX LONG_MAX 250 # define INTMAX_MIN LONG_MIN 251 # endif 252 #endif 253 254 #ifndef PRIdMAX 255 # if INTMAX_MAX == LLONG_MAX 256 # define PRIdMAX "lld" 257 # else 258 # define PRIdMAX "ld" 259 # endif 260 #endif 261 262 #ifndef UINTMAX_MAX 263 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 264 typedef unsigned long long uintmax_t; 265 # else 266 typedef unsigned long uintmax_t; 267 # endif 268 #endif 269 270 #ifndef PRIuMAX 271 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 272 # define PRIuMAX "llu" 273 # else 274 # define PRIuMAX "lu" 275 # endif 276 #endif 277 278 #ifndef INT32_MAX 279 #define INT32_MAX 0x7fffffff 280 #endif /* !defined INT32_MAX */ 281 #ifndef INT32_MIN 282 #define INT32_MIN (-1 - INT32_MAX) 283 #endif /* !defined INT32_MIN */ 284 285 #ifndef SIZE_MAX 286 #define SIZE_MAX ((size_t) -1) 287 #endif 288 289 #if 2 < __GNUC__ + (96 <= __GNUC_MINOR__) 290 # define ATTRIBUTE_CONST __attribute__ ((__const__)) 291 # define ATTRIBUTE_PURE __attribute__ ((__pure__)) 292 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) 293 #else 294 # define ATTRIBUTE_CONST /* empty */ 295 # define ATTRIBUTE_PURE /* empty */ 296 # define ATTRIBUTE_FORMAT(spec) /* empty */ 297 #endif 298 299 #if !defined _Noreturn && __STDC_VERSION__ < 201112 300 # if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) 301 # define _Noreturn __attribute__ ((__noreturn__)) 302 # else 303 # define _Noreturn 304 # endif 305 #endif 306 307 #if __STDC_VERSION__ < 199901 && !defined restrict 308 # define restrict /* empty */ 309 #endif 310 311 /* 312 ** Workarounds for compilers/systems. 313 */ 314 315 /* 316 ** Compile with -Dtime_tz=T to build the tz package with a private 317 ** time_t type equivalent to T rather than the system-supplied time_t. 318 ** This debugging feature can test unusual design decisions 319 ** (e.g., time_t wider than 'long', or unsigned time_t) even on 320 ** typical platforms. 321 */ 322 #ifdef time_tz 323 # ifdef LOCALTIME_IMPLEMENTATION 324 static time_t sys_time(time_t *x) { return time(x); } 325 # endif 326 327 typedef time_tz tz_time_t; 328 329 # undef ctime 330 # define ctime tz_ctime 331 # undef ctime_r 332 # define ctime_r tz_ctime_r 333 # undef difftime 334 # define difftime tz_difftime 335 # undef gmtime 336 # define gmtime tz_gmtime 337 # undef gmtime_r 338 # define gmtime_r tz_gmtime_r 339 # undef localtime 340 # define localtime tz_localtime 341 # undef localtime_r 342 # define localtime_r tz_localtime_r 343 # undef localtime_rz 344 # define localtime_rz tz_localtime_rz 345 # undef mktime 346 # define mktime tz_mktime 347 # undef mktime_z 348 # define mktime_z tz_mktime_z 349 # undef offtime 350 # define offtime tz_offtime 351 # undef posix2time 352 # define posix2time tz_posix2time 353 # undef posix2time_z 354 # define posix2time_z tz_posix2time_z 355 # undef time 356 # define time tz_time 357 # undef time2posix 358 # define time2posix tz_time2posix 359 # undef time2posix_z 360 # define time2posix_z tz_time2posix_z 361 # undef time_t 362 # define time_t tz_time_t 363 # undef timegm 364 # define timegm tz_timegm 365 # undef timelocal 366 # define timelocal tz_timelocal 367 # undef timeoff 368 # define timeoff tz_timeoff 369 # undef tzalloc 370 # define tzalloc tz_tzalloc 371 # undef tzfree 372 # define tzfree tz_tzfree 373 # undef tzset 374 # define tzset tz_tzset 375 # undef tzsetwall 376 # define tzsetwall tz_tzsetwall 377 378 char *ctime(time_t const *); 379 char *ctime_r(time_t const *, char *); 380 double difftime(time_t, time_t); 381 struct tm *gmtime(time_t const *); 382 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 383 struct tm *localtime(time_t const *); 384 struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 385 time_t mktime(struct tm *); 386 time_t time(time_t *); 387 void tzset(void); 388 #endif 389 390 /* 391 ** Some time.h implementations don't declare asctime_r. 392 ** Others might define it as a macro. 393 ** Fix the former without affecting the latter. 394 */ 395 396 #ifndef asctime_r 397 extern char * asctime_r(struct tm const *restrict, char *restrict); 398 #endif 399 400 /* 401 ** The STD_INSPIRED functions are similar, but most also need 402 ** declarations if time_tz is defined. 403 */ 404 405 #ifdef STD_INSPIRED 406 # if !defined tzsetwall || defined time_tz 407 void tzsetwall(void); 408 # endif 409 # if !defined offtime || defined time_tz 410 struct tm *offtime(time_t const *, long); 411 # endif 412 # if !defined timegm || defined time_tz 413 time_t timegm(struct tm *); 414 # endif 415 # if !defined timelocal || defined time_tz 416 time_t timelocal(struct tm *); 417 # endif 418 # if !defined timeoff || defined time_tz 419 time_t timeoff(struct tm *, long); 420 # endif 421 # if !defined time2posix || defined time_tz 422 time_t time2posix(time_t); 423 # endif 424 # if !defined posix2time || defined time_tz 425 time_t posix2time(time_t); 426 # endif 427 #endif 428 429 /* Infer TM_ZONE on systems where this information is known, but suppress 430 guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */ 431 #if (defined __GLIBC__ \ 432 || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \ 433 || (defined __APPLE__ && defined __MACH__)) 434 # if !defined TM_GMTOFF && !defined NO_TM_GMTOFF 435 # define TM_GMTOFF tm_gmtoff 436 # endif 437 # if !defined TM_ZONE && !defined NO_TM_ZONE 438 # define TM_ZONE tm_zone 439 # endif 440 #endif 441 442 /* 443 ** Define functions that are ABI compatible with NetBSD but have 444 ** better prototypes. NetBSD 6.1.4 defines a pointer type timezone_t 445 ** and labors under the misconception that 'const timezone_t' is a 446 ** pointer to a constant. This use of 'const' is ineffective, so it 447 ** is not done here. What we call 'struct state' NetBSD calls 448 ** 'struct __state', but this is a private name so it doesn't matter. 449 */ 450 #ifndef __NetBSD__ 451 #if NETBSD_INSPIRED 452 typedef struct state *timezone_t; 453 struct tm *localtime_rz(timezone_t restrict, time_t const *restrict, 454 struct tm *restrict); 455 time_t mktime_z(timezone_t restrict, struct tm *restrict); 456 timezone_t tzalloc(char const *); 457 void tzfree(timezone_t); 458 # ifdef STD_INSPIRED 459 # if !defined posix2time_z || defined time_tz 460 time_t posix2time_z(timezone_t __restrict, time_t) ATTRIBUTE_PURE; 461 # endif 462 # if !defined time2posix_z || defined time_tz 463 time_t time2posix_z(timezone_t __restrict, time_t) ATTRIBUTE_PURE; 464 # endif 465 # endif 466 #endif 467 #endif 468 469 /* 470 ** Private function declarations. 471 */ 472 473 char * icatalloc(char * old, const char * new); 474 char * icpyalloc(const char * string); 475 const char * scheck(const char * string, const char * format); 476 477 /* 478 ** Finally, some convenience items. 479 */ 480 481 #if __STDC_VERSION__ < 199901 482 # define true 1 483 # define false 0 484 # define bool int 485 #else 486 # include <stdbool.h> 487 #endif 488 489 #ifndef TYPE_BIT 490 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) 491 #endif /* !defined TYPE_BIT */ 492 493 #ifndef TYPE_SIGNED 494 #define TYPE_SIGNED(type) (/*CONSTCOND*/((type) -1) < 0) 495 #endif /* !defined TYPE_SIGNED */ 496 497 #ifdef LOCALTIME_IMPLEMENTATION 498 /* The minimum and maximum finite time values. */ 499 static time_t const time_t_min = 500 (TYPE_SIGNED(time_t) 501 ? (time_t) -1 << (int)(CHAR_BIT * sizeof (time_t) - 1) 502 : 0); 503 static time_t const time_t_max = 504 (TYPE_SIGNED(time_t) 505 ? - (~ 0 < 0) - ((time_t) -1 << (int)(CHAR_BIT * sizeof (time_t) - 1)) 506 : -1); 507 #endif 508 509 #ifndef INT_STRLEN_MAXIMUM 510 /* 511 ** 302 / 1000 is log10(2.0) rounded up. 512 ** Subtract one for the sign bit if the type is signed; 513 ** add one for integer division truncation; 514 ** add one more for a minus sign if the type is signed. 515 */ 516 #define INT_STRLEN_MAXIMUM(type) \ 517 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 518 1 + TYPE_SIGNED(type)) 519 #endif /* !defined INT_STRLEN_MAXIMUM */ 520 521 /* 522 ** INITIALIZE(x) 523 */ 524 525 #if defined(__GNUC__) || defined(__lint__) 526 # define INITIALIZE(x) ((x) = 0) 527 #else 528 # define INITIALIZE(x) 529 #endif 530 531 #ifndef UNINIT_TRAP 532 # define UNINIT_TRAP 0 533 #endif 534 535 /* 536 ** For the benefit of GNU folk... 537 ** '_(MSGID)' uses the current locale's message library string for MSGID. 538 ** The default is to use gettext if available, and use MSGID otherwise. 539 */ 540 541 #ifndef _ 542 #if HAVE_GETTEXT 543 #define _(msgid) gettext(msgid) 544 #else /* !HAVE_GETTEXT */ 545 #define _(msgid) msgid 546 #endif /* !HAVE_GETTEXT */ 547 #endif /* !defined _ */ 548 549 #if !defined TZ_DOMAIN && defined HAVE_GETTEXT 550 # define TZ_DOMAIN "tz" 551 #endif 552 553 #if HAVE_INCOMPATIBLE_CTIME_R 554 #undef asctime_r 555 #undef ctime_r 556 char *asctime_r(struct tm const *, char *); 557 char *ctime_r(time_t const *, char *); 558 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 559 560 #ifndef YEARSPERREPEAT 561 #define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ 562 #endif /* !defined YEARSPERREPEAT */ 563 564 /* 565 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds. 566 */ 567 568 #ifndef AVGSECSPERYEAR 569 #define AVGSECSPERYEAR 31556952L 570 #endif /* !defined AVGSECSPERYEAR */ 571 572 #ifndef SECSPERREPEAT 573 #define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) 574 #endif /* !defined SECSPERREPEAT */ 575 576 #ifndef SECSPERREPEAT_BITS 577 #define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ 578 #endif /* !defined SECSPERREPEAT_BITS */ 579 580 #endif /* !defined PRIVATE_H */ 581