zic.c revision 1.1.1.12
1 #ifndef lint 2 #ifndef NOID 3 static char elsieid[] = "@(#)zic.c 7.104"; 4 #endif /* !defined NOID */ 5 #endif /* !defined lint */ 6 7 #include "private.h" 8 #include "locale.h" 9 #include "tzfile.h" 10 11 #if HAVE_SYS_STAT_H 12 #include "sys/stat.h" 13 #endif 14 #ifdef S_IRUSR 15 #define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 16 #else 17 #define MKDIR_UMASK 0755 18 #endif 19 20 /* 21 ** On some ancient hosts, predicates like `isspace(C)' are defined 22 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, 23 ** which says they are defined only if C == ((unsigned char) C) || C == EOF. 24 ** Neither the C Standard nor Posix require that `isascii' exist. 25 ** For portability, we check both ancient and modern requirements. 26 ** If isascii is not defined, the isascii check succeeds trivially. 27 */ 28 #include "ctype.h" 29 #ifndef isascii 30 #define isascii(x) 1 31 #endif 32 33 struct rule { 34 const char * r_filename; 35 int r_linenum; 36 const char * r_name; 37 38 int r_loyear; /* for example, 1986 */ 39 int r_hiyear; /* for example, 1986 */ 40 const char * r_yrtype; 41 42 int r_month; /* 0..11 */ 43 44 int r_dycode; /* see below */ 45 int r_dayofmonth; 46 int r_wday; 47 48 long r_tod; /* time from midnight */ 49 int r_todisstd; /* above is standard time if TRUE */ 50 /* or wall clock time if FALSE */ 51 int r_todisgmt; /* above is GMT if TRUE */ 52 /* or local time if FALSE */ 53 long r_stdoff; /* offset from standard time */ 54 const char * r_abbrvar; /* variable part of abbreviation */ 55 56 int r_todo; /* a rule to do (used in outzone) */ 57 time_t r_temp; /* used in outzone */ 58 }; 59 60 /* 61 ** r_dycode r_dayofmonth r_wday 62 */ 63 64 #define DC_DOM 0 /* 1..31 */ /* unused */ 65 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ 66 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ 67 68 struct zone { 69 const char * z_filename; 70 int z_linenum; 71 72 const char * z_name; 73 long z_gmtoff; 74 const char * z_rule; 75 const char * z_format; 76 77 long z_stdoff; 78 79 struct rule * z_rules; 80 int z_nrules; 81 82 struct rule z_untilrule; 83 time_t z_untiltime; 84 }; 85 86 extern int getopt P((int argc, char * const argv[], 87 const char * options)); 88 extern int link P((const char * fromname, const char * toname)); 89 extern char * optarg; 90 extern int optind; 91 92 static void addtt P((time_t starttime, int type)); 93 static int addtype P((long gmtoff, const char * abbr, int isdst, 94 int ttisstd, int ttisgmt)); 95 static void leapadd P((time_t t, int positive, int rolling, int count)); 96 static void adjleap P((void)); 97 static void associate P((void)); 98 static int ciequal P((const char * ap, const char * bp)); 99 static void convert P((long val, char * buf)); 100 static void dolink P((const char * fromfile, const char * tofile)); 101 static void doabbr P((char * abbr, const char * format, 102 const char * letters, int isdst)); 103 static void eat P((const char * name, int num)); 104 static void eats P((const char * name, int num, 105 const char * rname, int rnum)); 106 static long eitol P((int i)); 107 static void error P((const char * message)); 108 static char ** getfields P((char * buf)); 109 static long gethms P((const char * string, const char * errstrng, 110 int signable)); 111 static void infile P((const char * filename)); 112 static void inleap P((char ** fields, int nfields)); 113 static void inlink P((char ** fields, int nfields)); 114 static void inrule P((char ** fields, int nfields)); 115 static int inzcont P((char ** fields, int nfields)); 116 static int inzone P((char ** fields, int nfields)); 117 static int inzsub P((char ** fields, int nfields, int iscont)); 118 static int itsabbr P((const char * abbr, const char * word)); 119 static int itsdir P((const char * name)); 120 static int lowerit P((int c)); 121 static char * memcheck P((char * tocheck)); 122 static int mkdirs P((char * filename)); 123 static void newabbr P((const char * abbr)); 124 static long oadd P((long t1, long t2)); 125 static void outzone P((const struct zone * zp, int ntzones)); 126 static void puttzcode P((long code, FILE * fp)); 127 static int rcomp P((const void * leftp, const void * rightp)); 128 static time_t rpytime P((const struct rule * rp, int wantedy)); 129 static void rulesub P((struct rule * rp, 130 const char * loyearp, const char * hiyearp, 131 const char * typep, const char * monthp, 132 const char * dayp, const char * timep)); 133 static void setboundaries P((void)); 134 static time_t tadd P((time_t t1, long t2)); 135 static void usage P((void)); 136 static void writezone P((const char * name)); 137 static int yearistype P((int year, const char * type)); 138 139 #if !(HAVE_STRERROR - 0) 140 static char * strerror P((int)); 141 #endif /* !(HAVE_STRERROR - 0) */ 142 143 static int charcnt; 144 static int errors; 145 static const char * filename; 146 static int leapcnt; 147 static int linenum; 148 static time_t max_time; 149 static int max_year; 150 static int max_year_representable; 151 static time_t min_time; 152 static int min_year; 153 static int min_year_representable; 154 static int noise; 155 static const char * rfilename; 156 static int rlinenum; 157 static const char * progname; 158 static int timecnt; 159 static int typecnt; 160 161 /* 162 ** Line codes. 163 */ 164 165 #define LC_RULE 0 166 #define LC_ZONE 1 167 #define LC_LINK 2 168 #define LC_LEAP 3 169 170 /* 171 ** Which fields are which on a Zone line. 172 */ 173 174 #define ZF_NAME 1 175 #define ZF_GMTOFF 2 176 #define ZF_RULE 3 177 #define ZF_FORMAT 4 178 #define ZF_TILYEAR 5 179 #define ZF_TILMONTH 6 180 #define ZF_TILDAY 7 181 #define ZF_TILTIME 8 182 #define ZONE_MINFIELDS 5 183 #define ZONE_MAXFIELDS 9 184 185 /* 186 ** Which fields are which on a Zone continuation line. 187 */ 188 189 #define ZFC_GMTOFF 0 190 #define ZFC_RULE 1 191 #define ZFC_FORMAT 2 192 #define ZFC_TILYEAR 3 193 #define ZFC_TILMONTH 4 194 #define ZFC_TILDAY 5 195 #define ZFC_TILTIME 6 196 #define ZONEC_MINFIELDS 3 197 #define ZONEC_MAXFIELDS 7 198 199 /* 200 ** Which files are which on a Rule line. 201 */ 202 203 #define RF_NAME 1 204 #define RF_LOYEAR 2 205 #define RF_HIYEAR 3 206 #define RF_COMMAND 4 207 #define RF_MONTH 5 208 #define RF_DAY 6 209 #define RF_TOD 7 210 #define RF_STDOFF 8 211 #define RF_ABBRVAR 9 212 #define RULE_FIELDS 10 213 214 /* 215 ** Which fields are which on a Link line. 216 */ 217 218 #define LF_FROM 1 219 #define LF_TO 2 220 #define LINK_FIELDS 3 221 222 /* 223 ** Which fields are which on a Leap line. 224 */ 225 226 #define LP_YEAR 1 227 #define LP_MONTH 2 228 #define LP_DAY 3 229 #define LP_TIME 4 230 #define LP_CORR 5 231 #define LP_ROLL 6 232 #define LEAP_FIELDS 7 233 234 /* 235 ** Year synonyms. 236 */ 237 238 #define YR_MINIMUM 0 239 #define YR_MAXIMUM 1 240 #define YR_ONLY 2 241 242 static struct rule * rules; 243 static int nrules; /* number of rules */ 244 245 static struct zone * zones; 246 static int nzones; /* number of zones */ 247 248 struct link { 249 const char * l_filename; 250 int l_linenum; 251 const char * l_from; 252 const char * l_to; 253 }; 254 255 static struct link * links; 256 static int nlinks; 257 258 struct lookup { 259 const char * l_word; 260 const int l_value; 261 }; 262 263 static struct lookup const * byword P((const char * string, 264 const struct lookup * lp)); 265 266 static struct lookup const line_codes[] = { 267 { "Rule", LC_RULE }, 268 { "Zone", LC_ZONE }, 269 { "Link", LC_LINK }, 270 { "Leap", LC_LEAP }, 271 { NULL, 0} 272 }; 273 274 static struct lookup const mon_names[] = { 275 { "January", TM_JANUARY }, 276 { "February", TM_FEBRUARY }, 277 { "March", TM_MARCH }, 278 { "April", TM_APRIL }, 279 { "May", TM_MAY }, 280 { "June", TM_JUNE }, 281 { "July", TM_JULY }, 282 { "August", TM_AUGUST }, 283 { "September", TM_SEPTEMBER }, 284 { "October", TM_OCTOBER }, 285 { "November", TM_NOVEMBER }, 286 { "December", TM_DECEMBER }, 287 { NULL, 0 } 288 }; 289 290 static struct lookup const wday_names[] = { 291 { "Sunday", TM_SUNDAY }, 292 { "Monday", TM_MONDAY }, 293 { "Tuesday", TM_TUESDAY }, 294 { "Wednesday", TM_WEDNESDAY }, 295 { "Thursday", TM_THURSDAY }, 296 { "Friday", TM_FRIDAY }, 297 { "Saturday", TM_SATURDAY }, 298 { NULL, 0 } 299 }; 300 301 static struct lookup const lasts[] = { 302 { "last-Sunday", TM_SUNDAY }, 303 { "last-Monday", TM_MONDAY }, 304 { "last-Tuesday", TM_TUESDAY }, 305 { "last-Wednesday", TM_WEDNESDAY }, 306 { "last-Thursday", TM_THURSDAY }, 307 { "last-Friday", TM_FRIDAY }, 308 { "last-Saturday", TM_SATURDAY }, 309 { NULL, 0 } 310 }; 311 312 static struct lookup const begin_years[] = { 313 { "minimum", YR_MINIMUM }, 314 { "maximum", YR_MAXIMUM }, 315 { NULL, 0 } 316 }; 317 318 static struct lookup const end_years[] = { 319 { "minimum", YR_MINIMUM }, 320 { "maximum", YR_MAXIMUM }, 321 { "only", YR_ONLY }, 322 { NULL, 0 } 323 }; 324 325 static struct lookup const leap_types[] = { 326 { "Rolling", TRUE }, 327 { "Stationary", FALSE }, 328 { NULL, 0 } 329 }; 330 331 static const int len_months[2][MONSPERYEAR] = { 332 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, 333 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } 334 }; 335 336 static const int len_years[2] = { 337 DAYSPERNYEAR, DAYSPERLYEAR 338 }; 339 340 static struct attype { 341 time_t at; 342 unsigned char type; 343 } attypes[TZ_MAX_TIMES]; 344 static long gmtoffs[TZ_MAX_TYPES]; 345 static char isdsts[TZ_MAX_TYPES]; 346 static unsigned char abbrinds[TZ_MAX_TYPES]; 347 static char ttisstds[TZ_MAX_TYPES]; 348 static char ttisgmts[TZ_MAX_TYPES]; 349 static char chars[TZ_MAX_CHARS]; 350 static time_t trans[TZ_MAX_LEAPS]; 351 static long corr[TZ_MAX_LEAPS]; 352 static char roll[TZ_MAX_LEAPS]; 353 354 /* 355 ** Memory allocation. 356 */ 357 358 static char * 359 memcheck(ptr) 360 char * const ptr; 361 { 362 if (ptr == NULL) { 363 const char *e = strerror(errno); 364 365 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), 366 progname, e); 367 (void) exit(EXIT_FAILURE); 368 } 369 return ptr; 370 } 371 372 #define emalloc(size) memcheck(imalloc(size)) 373 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) 374 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) 375 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) 376 377 /* 378 ** Error handling. 379 */ 380 381 #if !(HAVE_STRERROR - 0) 382 static char * 383 strerror(errnum) 384 int errnum; 385 { 386 extern char * sys_errlist[]; 387 extern int sys_nerr; 388 389 return (errnum > 0 && errnum <= sys_nerr) ? 390 sys_errlist[errnum] : _("Unknown system error"); 391 } 392 #endif /* !(HAVE_STRERROR - 0) */ 393 394 static void 395 eats(name, num, rname, rnum) 396 const char * const name; 397 const int num; 398 const char * const rname; 399 const int rnum; 400 { 401 filename = name; 402 linenum = num; 403 rfilename = rname; 404 rlinenum = rnum; 405 } 406 407 static void 408 eat(name, num) 409 const char * const name; 410 const int num; 411 { 412 eats(name, num, (char *) NULL, -1); 413 } 414 415 static void 416 error(string) 417 const char * const string; 418 { 419 /* 420 ** Match the format of "cc" to allow sh users to 421 ** zic ... 2>&1 | error -t "*" -v 422 ** on BSD systems. 423 */ 424 (void) fprintf(stderr, _("\"%s\", line %d: %s"), 425 filename, linenum, string); 426 if (rfilename != NULL) 427 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), 428 rfilename, rlinenum); 429 (void) fprintf(stderr, "\n"); 430 ++errors; 431 } 432 433 static void 434 warning(string) 435 const char * const string; 436 { 437 char * cp; 438 439 cp = ecpyalloc(_("warning: ")); 440 cp = ecatalloc(cp, string); 441 error(cp); 442 ifree(cp); 443 --errors; 444 } 445 446 static void 447 usage P((void)) 448 { 449 (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), 450 progname, progname); 451 (void) exit(EXIT_FAILURE); 452 } 453 454 static const char * psxrules; 455 static const char * lcltime; 456 static const char * directory; 457 static const char * leapsec; 458 static const char * yitcommand; 459 static int sflag = FALSE; 460 461 int 462 main(argc, argv) 463 int argc; 464 char * argv[]; 465 { 466 register int i; 467 register int j; 468 register int c; 469 470 #ifdef unix 471 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); 472 #endif /* defined unix */ 473 #if HAVE_GETTEXT - 0 474 (void) setlocale(LC_MESSAGES, ""); 475 #ifdef TZ_DOMAINDIR 476 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); 477 #endif /* defined TEXTDOMAINDIR */ 478 (void) textdomain(TZ_DOMAIN); 479 #endif /* HAVE_GETTEXT - 0 */ 480 progname = argv[0]; 481 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) 482 switch (c) { 483 default: 484 usage(); 485 case 'd': 486 if (directory == NULL) 487 directory = optarg; 488 else { 489 (void) fprintf(stderr, 490 _("%s: More than one -d option specified\n"), 491 progname); 492 (void) exit(EXIT_FAILURE); 493 } 494 break; 495 case 'l': 496 if (lcltime == NULL) 497 lcltime = optarg; 498 else { 499 (void) fprintf(stderr, 500 _("%s: More than one -l option specified\n"), 501 progname); 502 (void) exit(EXIT_FAILURE); 503 } 504 break; 505 case 'p': 506 if (psxrules == NULL) 507 psxrules = optarg; 508 else { 509 (void) fprintf(stderr, 510 _("%s: More than one -p option specified\n"), 511 progname); 512 (void) exit(EXIT_FAILURE); 513 } 514 break; 515 case 'y': 516 if (yitcommand == NULL) 517 yitcommand = optarg; 518 else { 519 (void) fprintf(stderr, 520 _("%s: More than one -y option specified\n"), 521 progname); 522 (void) exit(EXIT_FAILURE); 523 } 524 break; 525 case 'L': 526 if (leapsec == NULL) 527 leapsec = optarg; 528 else { 529 (void) fprintf(stderr, 530 _("%s: More than one -L option specified\n"), 531 progname); 532 (void) exit(EXIT_FAILURE); 533 } 534 break; 535 case 'v': 536 noise = TRUE; 537 break; 538 case 's': 539 sflag = TRUE; 540 break; 541 } 542 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) 543 usage(); /* usage message by request */ 544 if (directory == NULL) 545 directory = TZDIR; 546 if (yitcommand == NULL) 547 yitcommand = "yearistype"; 548 549 setboundaries(); 550 551 if (optind < argc && leapsec != NULL) { 552 infile(leapsec); 553 adjleap(); 554 } 555 556 for (i = optind; i < argc; ++i) 557 infile(argv[i]); 558 if (errors) 559 (void) exit(EXIT_FAILURE); 560 associate(); 561 for (i = 0; i < nzones; i = j) { 562 /* 563 ** Find the next non-continuation zone entry. 564 */ 565 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) 566 continue; 567 outzone(&zones[i], j - i); 568 } 569 /* 570 ** Make links. 571 */ 572 for (i = 0; i < nlinks; ++i) { 573 eat(links[i].l_filename, links[i].l_linenum); 574 dolink(links[i].l_from, links[i].l_to); 575 } 576 if (lcltime != NULL) { 577 eat("command line", 1); 578 dolink(lcltime, TZDEFAULT); 579 } 580 if (psxrules != NULL) { 581 eat("command line", 1); 582 dolink(psxrules, TZDEFRULES); 583 } 584 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; 585 } 586 587 static void 588 dolink(fromfile, tofile) 589 const char * const fromfile; 590 const char * const tofile; 591 { 592 register char * fromname; 593 register char * toname; 594 595 if (fromfile[0] == '/') 596 fromname = ecpyalloc(fromfile); 597 else { 598 fromname = ecpyalloc(directory); 599 fromname = ecatalloc(fromname, "/"); 600 fromname = ecatalloc(fromname, fromfile); 601 } 602 if (tofile[0] == '/') 603 toname = ecpyalloc(tofile); 604 else { 605 toname = ecpyalloc(directory); 606 toname = ecatalloc(toname, "/"); 607 toname = ecatalloc(toname, tofile); 608 } 609 /* 610 ** We get to be careful here since 611 ** there's a fair chance of root running us. 612 */ 613 if (!itsdir(toname)) 614 (void) remove(toname); 615 if (link(fromname, toname) != 0) { 616 int result; 617 618 if (mkdirs(toname) != 0) 619 (void) exit(EXIT_FAILURE); 620 621 result = link(fromname, toname); 622 #if (HAVE_SYMLINK - 0) 623 if (result != 0) { 624 const char *s = tofile; 625 register char * symlinkcontents = NULL; 626 while ((s = strchr(s+1, '/')) != NULL) 627 symlinkcontents = ecatalloc(symlinkcontents, "../"); 628 symlinkcontents = ecatalloc(symlinkcontents, fromfile); 629 630 result = symlink(symlinkcontents, toname); 631 if (result == 0) 632 warning(_("hard link failed, symbolic link used")); 633 ifree(symlinkcontents); 634 } 635 #endif 636 if (result != 0) { 637 const char *e = strerror(errno); 638 639 (void) fprintf(stderr, 640 _("%s: Can't link from %s to %s: %s\n"), 641 progname, fromname, toname, e); 642 (void) exit(EXIT_FAILURE); 643 } 644 } 645 ifree(fromname); 646 ifree(toname); 647 } 648 649 #ifndef INT_MAX 650 #define INT_MAX ((int) (((unsigned)~0)>>1)) 651 #endif /* !defined INT_MAX */ 652 653 #ifndef INT_MIN 654 #define INT_MIN ((int) ~(((unsigned)~0)>>1)) 655 #endif /* !defined INT_MIN */ 656 657 /* 658 ** The tz file format currently allows at most 32-bit quantities. 659 ** This restriction should be removed before signed 32-bit values 660 ** wrap around in 2038, but unfortunately this will require a 661 ** change to the tz file format. 662 */ 663 664 #define MAX_BITS_IN_FILE 32 665 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) 666 667 static void 668 setboundaries P((void)) 669 { 670 if (TYPE_SIGNED(time_t)) { 671 min_time = ~ (time_t) 0; 672 min_time <<= TIME_T_BITS_IN_FILE - 1; 673 max_time = ~ (time_t) 0 - min_time; 674 if (sflag) 675 min_time = 0; 676 } else { 677 min_time = 0; 678 max_time = 2 - sflag; 679 max_time <<= TIME_T_BITS_IN_FILE - 1; 680 --max_time; 681 } 682 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; 683 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; 684 min_year_representable = min_year; 685 max_year_representable = max_year; 686 } 687 688 static int 689 itsdir(name) 690 const char * const name; 691 { 692 register char * myname; 693 register int accres; 694 695 myname = ecpyalloc(name); 696 myname = ecatalloc(myname, "/."); 697 accres = access(myname, F_OK); 698 ifree(myname); 699 return accres == 0; 700 } 701 702 /* 703 ** Associate sets of rules with zones. 704 */ 705 706 /* 707 ** Sort by rule name. 708 */ 709 710 static int 711 rcomp(cp1, cp2) 712 const void * cp1; 713 const void * cp2; 714 { 715 return strcmp(((const struct rule *) cp1)->r_name, 716 ((const struct rule *) cp2)->r_name); 717 } 718 719 static void 720 associate P((void)) 721 { 722 register struct zone * zp; 723 register struct rule * rp; 724 register int base, out; 725 register int i, j; 726 727 if (nrules != 0) { 728 (void) qsort((void *) rules, (size_t) nrules, 729 (size_t) sizeof *rules, rcomp); 730 for (i = 0; i < nrules - 1; ++i) { 731 if (strcmp(rules[i].r_name, 732 rules[i + 1].r_name) != 0) 733 continue; 734 if (strcmp(rules[i].r_filename, 735 rules[i + 1].r_filename) == 0) 736 continue; 737 eat(rules[i].r_filename, rules[i].r_linenum); 738 warning(_("same rule name in multiple files")); 739 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); 740 warning(_("same rule name in multiple files")); 741 for (j = i + 2; j < nrules; ++j) { 742 if (strcmp(rules[i].r_name, 743 rules[j].r_name) != 0) 744 break; 745 if (strcmp(rules[i].r_filename, 746 rules[j].r_filename) == 0) 747 continue; 748 if (strcmp(rules[i + 1].r_filename, 749 rules[j].r_filename) == 0) 750 continue; 751 break; 752 } 753 i = j - 1; 754 } 755 } 756 for (i = 0; i < nzones; ++i) { 757 zp = &zones[i]; 758 zp->z_rules = NULL; 759 zp->z_nrules = 0; 760 } 761 for (base = 0; base < nrules; base = out) { 762 rp = &rules[base]; 763 for (out = base + 1; out < nrules; ++out) 764 if (strcmp(rp->r_name, rules[out].r_name) != 0) 765 break; 766 for (i = 0; i < nzones; ++i) { 767 zp = &zones[i]; 768 if (strcmp(zp->z_rule, rp->r_name) != 0) 769 continue; 770 zp->z_rules = rp; 771 zp->z_nrules = out - base; 772 } 773 } 774 for (i = 0; i < nzones; ++i) { 775 zp = &zones[i]; 776 if (zp->z_nrules == 0) { 777 /* 778 ** Maybe we have a local standard time offset. 779 */ 780 eat(zp->z_filename, zp->z_linenum); 781 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), 782 TRUE); 783 /* 784 ** Note, though, that if there's no rule, 785 ** a '%s' in the format is a bad thing. 786 */ 787 if (strchr(zp->z_format, '%') != 0) 788 error(_("%s in ruleless zone")); 789 } 790 } 791 if (errors) 792 (void) exit(EXIT_FAILURE); 793 } 794 795 static void 796 infile(name) 797 const char * name; 798 { 799 register FILE * fp; 800 register char ** fields; 801 register char * cp; 802 register const struct lookup * lp; 803 register int nfields; 804 register int wantcont; 805 register int num; 806 char buf[BUFSIZ]; 807 808 if (strcmp(name, "-") == 0) { 809 name = _("standard input"); 810 fp = stdin; 811 } else if ((fp = fopen(name, "r")) == NULL) { 812 const char *e = strerror(errno); 813 814 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), 815 progname, name, e); 816 (void) exit(EXIT_FAILURE); 817 } 818 wantcont = FALSE; 819 for (num = 1; ; ++num) { 820 eat(name, num); 821 if (fgets(buf, (int) sizeof buf, fp) != buf) 822 break; 823 cp = strchr(buf, '\n'); 824 if (cp == NULL) { 825 error(_("line too long")); 826 (void) exit(EXIT_FAILURE); 827 } 828 *cp = '\0'; 829 fields = getfields(buf); 830 nfields = 0; 831 while (fields[nfields] != NULL) { 832 static char nada; 833 834 if (strcmp(fields[nfields], "-") == 0) 835 fields[nfields] = &nada; 836 ++nfields; 837 } 838 if (nfields == 0) { 839 /* nothing to do */ 840 } else if (wantcont) { 841 wantcont = inzcont(fields, nfields); 842 } else { 843 lp = byword(fields[0], line_codes); 844 if (lp == NULL) 845 error(_("input line of unknown type")); 846 else switch ((int) (lp->l_value)) { 847 case LC_RULE: 848 inrule(fields, nfields); 849 wantcont = FALSE; 850 break; 851 case LC_ZONE: 852 wantcont = inzone(fields, nfields); 853 break; 854 case LC_LINK: 855 inlink(fields, nfields); 856 wantcont = FALSE; 857 break; 858 case LC_LEAP: 859 if (name != leapsec) 860 (void) fprintf(stderr, 861 _("%s: Leap line in non leap seconds file %s\n"), 862 progname, name); 863 else inleap(fields, nfields); 864 wantcont = FALSE; 865 break; 866 default: /* "cannot happen" */ 867 (void) fprintf(stderr, 868 _("%s: panic: Invalid l_value %d\n"), 869 progname, lp->l_value); 870 (void) exit(EXIT_FAILURE); 871 } 872 } 873 ifree((char *) fields); 874 } 875 if (ferror(fp)) { 876 (void) fprintf(stderr, _("%s: Error reading %s\n"), 877 progname, filename); 878 (void) exit(EXIT_FAILURE); 879 } 880 if (fp != stdin && fclose(fp)) { 881 const char *e = strerror(errno); 882 883 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), 884 progname, filename, e); 885 (void) exit(EXIT_FAILURE); 886 } 887 if (wantcont) 888 error(_("expected continuation line not found")); 889 } 890 891 /* 892 ** Convert a string of one of the forms 893 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss 894 ** into a number of seconds. 895 ** A null string maps to zero. 896 ** Call error with errstring and return zero on errors. 897 */ 898 899 static long 900 gethms(string, errstring, signable) 901 const char * string; 902 const char * const errstring; 903 const int signable; 904 { 905 int hh, mm, ss, sign; 906 907 if (string == NULL || *string == '\0') 908 return 0; 909 if (!signable) 910 sign = 1; 911 else if (*string == '-') { 912 sign = -1; 913 ++string; 914 } else sign = 1; 915 if (sscanf(string, scheck(string, "%d"), &hh) == 1) 916 mm = ss = 0; 917 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) 918 ss = 0; 919 else if (sscanf(string, scheck(string, "%d:%d:%d"), 920 &hh, &mm, &ss) != 3) { 921 error(errstring); 922 return 0; 923 } 924 if ((hh < 0 || hh >= HOURSPERDAY || 925 mm < 0 || mm >= MINSPERHOUR || 926 ss < 0 || ss > SECSPERMIN) && 927 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) { 928 error(errstring); 929 return 0; 930 } 931 return eitol(sign) * 932 (eitol(hh * MINSPERHOUR + mm) * 933 eitol(SECSPERMIN) + eitol(ss)); 934 } 935 936 static void 937 inrule(fields, nfields) 938 register char ** const fields; 939 const int nfields; 940 { 941 static struct rule r; 942 943 if (nfields != RULE_FIELDS) { 944 error(_("wrong number of fields on Rule line")); 945 return; 946 } 947 if (*fields[RF_NAME] == '\0') { 948 error(_("nameless rule")); 949 return; 950 } 951 r.r_filename = filename; 952 r.r_linenum = linenum; 953 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); 954 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], 955 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); 956 r.r_name = ecpyalloc(fields[RF_NAME]); 957 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); 958 rules = (struct rule *) (void *) erealloc((char *) rules, 959 (int) ((nrules + 1) * sizeof *rules)); 960 rules[nrules++] = r; 961 } 962 963 static int 964 inzone(fields, nfields) 965 register char ** const fields; 966 const int nfields; 967 { 968 register int i; 969 static char * buf; 970 971 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { 972 error(_("wrong number of fields on Zone line")); 973 return FALSE; 974 } 975 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { 976 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); 977 (void) sprintf(buf, 978 _("\"Zone %s\" line and -l option are mutually exclusive"), 979 TZDEFAULT); 980 error(buf); 981 return FALSE; 982 } 983 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { 984 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); 985 (void) sprintf(buf, 986 _("\"Zone %s\" line and -p option are mutually exclusive"), 987 TZDEFRULES); 988 error(buf); 989 return FALSE; 990 } 991 for (i = 0; i < nzones; ++i) 992 if (zones[i].z_name != NULL && 993 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { 994 buf = erealloc(buf, (int) (132 + 995 strlen(fields[ZF_NAME]) + 996 strlen(zones[i].z_filename))); 997 (void) sprintf(buf, 998 _("duplicate zone name %s (file \"%s\", line %d)"), 999 fields[ZF_NAME], 1000 zones[i].z_filename, 1001 zones[i].z_linenum); 1002 error(buf); 1003 return FALSE; 1004 } 1005 return inzsub(fields, nfields, FALSE); 1006 } 1007 1008 static int 1009 inzcont(fields, nfields) 1010 register char ** const fields; 1011 const int nfields; 1012 { 1013 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { 1014 error(_("wrong number of fields on Zone continuation line")); 1015 return FALSE; 1016 } 1017 return inzsub(fields, nfields, TRUE); 1018 } 1019 1020 static int 1021 inzsub(fields, nfields, iscont) 1022 register char ** const fields; 1023 const int nfields; 1024 const int iscont; 1025 { 1026 register char * cp; 1027 static struct zone z; 1028 register int i_gmtoff, i_rule, i_format; 1029 register int i_untilyear, i_untilmonth; 1030 register int i_untilday, i_untiltime; 1031 register int hasuntil; 1032 1033 if (iscont) { 1034 i_gmtoff = ZFC_GMTOFF; 1035 i_rule = ZFC_RULE; 1036 i_format = ZFC_FORMAT; 1037 i_untilyear = ZFC_TILYEAR; 1038 i_untilmonth = ZFC_TILMONTH; 1039 i_untilday = ZFC_TILDAY; 1040 i_untiltime = ZFC_TILTIME; 1041 z.z_name = NULL; 1042 } else { 1043 i_gmtoff = ZF_GMTOFF; 1044 i_rule = ZF_RULE; 1045 i_format = ZF_FORMAT; 1046 i_untilyear = ZF_TILYEAR; 1047 i_untilmonth = ZF_TILMONTH; 1048 i_untilday = ZF_TILDAY; 1049 i_untiltime = ZF_TILTIME; 1050 z.z_name = ecpyalloc(fields[ZF_NAME]); 1051 } 1052 z.z_filename = filename; 1053 z.z_linenum = linenum; 1054 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE); 1055 if ((cp = strchr(fields[i_format], '%')) != 0) { 1056 if (*++cp != 's' || strchr(cp, '%') != 0) { 1057 error(_("invalid abbreviation format")); 1058 return FALSE; 1059 } 1060 } 1061 z.z_rule = ecpyalloc(fields[i_rule]); 1062 z.z_format = ecpyalloc(fields[i_format]); 1063 hasuntil = nfields > i_untilyear; 1064 if (hasuntil) { 1065 z.z_untilrule.r_filename = filename; 1066 z.z_untilrule.r_linenum = linenum; 1067 rulesub(&z.z_untilrule, 1068 fields[i_untilyear], 1069 "only", 1070 "", 1071 (nfields > i_untilmonth) ? 1072 fields[i_untilmonth] : "Jan", 1073 (nfields > i_untilday) ? fields[i_untilday] : "1", 1074 (nfields > i_untiltime) ? fields[i_untiltime] : "0"); 1075 z.z_untiltime = rpytime(&z.z_untilrule, 1076 z.z_untilrule.r_loyear); 1077 if (iscont && nzones > 0 && 1078 z.z_untiltime > min_time && 1079 z.z_untiltime < max_time && 1080 zones[nzones - 1].z_untiltime > min_time && 1081 zones[nzones - 1].z_untiltime < max_time && 1082 zones[nzones - 1].z_untiltime >= z.z_untiltime) { 1083 error(_("Zone continuation line end time is not after end time of previous line")); 1084 return FALSE; 1085 } 1086 } 1087 zones = (struct zone *) (void *) erealloc((char *) zones, 1088 (int) ((nzones + 1) * sizeof *zones)); 1089 zones[nzones++] = z; 1090 /* 1091 ** If there was an UNTIL field on this line, 1092 ** there's more information about the zone on the next line. 1093 */ 1094 return hasuntil; 1095 } 1096 1097 static void 1098 inleap(fields, nfields) 1099 register char ** const fields; 1100 const int nfields; 1101 { 1102 register const char * cp; 1103 register const struct lookup * lp; 1104 register int i, j; 1105 int year, month, day; 1106 long dayoff, tod; 1107 time_t t; 1108 1109 if (nfields != LEAP_FIELDS) { 1110 error(_("wrong number of fields on Leap line")); 1111 return; 1112 } 1113 dayoff = 0; 1114 cp = fields[LP_YEAR]; 1115 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { 1116 /* 1117 * Leapin' Lizards! 1118 */ 1119 error(_("invalid leaping year")); 1120 return; 1121 } 1122 j = EPOCH_YEAR; 1123 while (j != year) { 1124 if (year > j) { 1125 i = len_years[isleap(j)]; 1126 ++j; 1127 } else { 1128 --j; 1129 i = -len_years[isleap(j)]; 1130 } 1131 dayoff = oadd(dayoff, eitol(i)); 1132 } 1133 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { 1134 error(_("invalid month name")); 1135 return; 1136 } 1137 month = lp->l_value; 1138 j = TM_JANUARY; 1139 while (j != month) { 1140 i = len_months[isleap(year)][j]; 1141 dayoff = oadd(dayoff, eitol(i)); 1142 ++j; 1143 } 1144 cp = fields[LP_DAY]; 1145 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || 1146 day <= 0 || day > len_months[isleap(year)][month]) { 1147 error(_("invalid day of month")); 1148 return; 1149 } 1150 dayoff = oadd(dayoff, eitol(day - 1)); 1151 if (dayoff < 0 && !TYPE_SIGNED(time_t)) { 1152 error(_("time before zero")); 1153 return; 1154 } 1155 t = (time_t) dayoff * SECSPERDAY; 1156 /* 1157 ** Cheap overflow check. 1158 */ 1159 if (t / SECSPERDAY != dayoff) { 1160 error(_("time overflow")); 1161 return; 1162 } 1163 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); 1164 cp = fields[LP_CORR]; 1165 { 1166 register int positive; 1167 int count; 1168 1169 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ 1170 positive = FALSE; 1171 count = 1; 1172 } else if (strcmp(cp, "--") == 0) { 1173 positive = FALSE; 1174 count = 2; 1175 } else if (strcmp(cp, "+") == 0) { 1176 positive = TRUE; 1177 count = 1; 1178 } else if (strcmp(cp, "++") == 0) { 1179 positive = TRUE; 1180 count = 2; 1181 } else { 1182 error(_("illegal CORRECTION field on Leap line")); 1183 return; 1184 } 1185 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { 1186 error(_("illegal Rolling/Stationary field on Leap line")); 1187 return; 1188 } 1189 leapadd(tadd(t, tod), positive, lp->l_value, count); 1190 } 1191 } 1192 1193 static void 1194 inlink(fields, nfields) 1195 register char ** const fields; 1196 const int nfields; 1197 { 1198 struct link l; 1199 1200 if (nfields != LINK_FIELDS) { 1201 error(_("wrong number of fields on Link line")); 1202 return; 1203 } 1204 if (*fields[LF_FROM] == '\0') { 1205 error(_("blank FROM field on Link line")); 1206 return; 1207 } 1208 if (*fields[LF_TO] == '\0') { 1209 error(_("blank TO field on Link line")); 1210 return; 1211 } 1212 l.l_filename = filename; 1213 l.l_linenum = linenum; 1214 l.l_from = ecpyalloc(fields[LF_FROM]); 1215 l.l_to = ecpyalloc(fields[LF_TO]); 1216 links = (struct link *) (void *) erealloc((char *) links, 1217 (int) ((nlinks + 1) * sizeof *links)); 1218 links[nlinks++] = l; 1219 } 1220 1221 static void 1222 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) 1223 register struct rule * const rp; 1224 const char * const loyearp; 1225 const char * const hiyearp; 1226 const char * const typep; 1227 const char * const monthp; 1228 const char * const dayp; 1229 const char * const timep; 1230 { 1231 register const struct lookup * lp; 1232 register const char * cp; 1233 register char * dp; 1234 register char * ep; 1235 1236 if ((lp = byword(monthp, mon_names)) == NULL) { 1237 error(_("invalid month name")); 1238 return; 1239 } 1240 rp->r_month = lp->l_value; 1241 rp->r_todisstd = FALSE; 1242 rp->r_todisgmt = FALSE; 1243 dp = ecpyalloc(timep); 1244 if (*dp != '\0') { 1245 ep = dp + strlen(dp) - 1; 1246 switch (lowerit(*ep)) { 1247 case 's': /* Standard */ 1248 rp->r_todisstd = TRUE; 1249 rp->r_todisgmt = FALSE; 1250 *ep = '\0'; 1251 break; 1252 case 'w': /* Wall */ 1253 rp->r_todisstd = FALSE; 1254 rp->r_todisgmt = FALSE; 1255 *ep = '\0'; 1256 break; 1257 case 'g': /* Greenwich */ 1258 case 'u': /* Universal */ 1259 case 'z': /* Zulu */ 1260 rp->r_todisstd = TRUE; 1261 rp->r_todisgmt = TRUE; 1262 *ep = '\0'; 1263 break; 1264 } 1265 } 1266 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); 1267 ifree(dp); 1268 /* 1269 ** Year work. 1270 */ 1271 cp = loyearp; 1272 lp = byword(cp, begin_years); 1273 if (lp != NULL) switch ((int) lp->l_value) { 1274 case YR_MINIMUM: 1275 rp->r_loyear = INT_MIN; 1276 break; 1277 case YR_MAXIMUM: 1278 rp->r_loyear = INT_MAX; 1279 break; 1280 default: /* "cannot happen" */ 1281 (void) fprintf(stderr, 1282 _("%s: panic: Invalid l_value %d\n"), 1283 progname, lp->l_value); 1284 (void) exit(EXIT_FAILURE); 1285 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { 1286 error(_("invalid starting year")); 1287 return; 1288 } else if (noise) { 1289 if (rp->r_loyear < min_year_representable) 1290 warning(_("starting year too low to be represented")); 1291 else if (rp->r_loyear > max_year_representable) 1292 warning(_("starting year too high to be represented")); 1293 } 1294 cp = hiyearp; 1295 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { 1296 case YR_MINIMUM: 1297 rp->r_hiyear = INT_MIN; 1298 break; 1299 case YR_MAXIMUM: 1300 rp->r_hiyear = INT_MAX; 1301 break; 1302 case YR_ONLY: 1303 rp->r_hiyear = rp->r_loyear; 1304 break; 1305 default: /* "cannot happen" */ 1306 (void) fprintf(stderr, 1307 _("%s: panic: Invalid l_value %d\n"), 1308 progname, lp->l_value); 1309 (void) exit(EXIT_FAILURE); 1310 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { 1311 error(_("invalid ending year")); 1312 return; 1313 } else if (noise) { 1314 if (rp->r_loyear < min_year_representable) 1315 warning(_("starting year too low to be represented")); 1316 else if (rp->r_loyear > max_year_representable) 1317 warning(_("starting year too high to be represented")); 1318 } 1319 if (rp->r_loyear > rp->r_hiyear) { 1320 error(_("starting year greater than ending year")); 1321 return; 1322 } 1323 if (*typep == '\0') 1324 rp->r_yrtype = NULL; 1325 else { 1326 if (rp->r_loyear == rp->r_hiyear) { 1327 error(_("typed single year")); 1328 return; 1329 } 1330 rp->r_yrtype = ecpyalloc(typep); 1331 } 1332 if (rp->r_loyear < min_year && rp->r_loyear > 0) 1333 min_year = rp->r_loyear; 1334 /* 1335 ** Day work. 1336 ** Accept things such as: 1337 ** 1 1338 ** last-Sunday 1339 ** Sun<=20 1340 ** Sun>=7 1341 */ 1342 dp = ecpyalloc(dayp); 1343 if ((lp = byword(dp, lasts)) != NULL) { 1344 rp->r_dycode = DC_DOWLEQ; 1345 rp->r_wday = lp->l_value; 1346 rp->r_dayofmonth = len_months[1][rp->r_month]; 1347 } else { 1348 if ((ep = strchr(dp, '<')) != 0) 1349 rp->r_dycode = DC_DOWLEQ; 1350 else if ((ep = strchr(dp, '>')) != 0) 1351 rp->r_dycode = DC_DOWGEQ; 1352 else { 1353 ep = dp; 1354 rp->r_dycode = DC_DOM; 1355 } 1356 if (rp->r_dycode != DC_DOM) { 1357 *ep++ = 0; 1358 if (*ep++ != '=') { 1359 error(_("invalid day of month")); 1360 ifree(dp); 1361 return; 1362 } 1363 if ((lp = byword(dp, wday_names)) == NULL) { 1364 error(_("invalid weekday name")); 1365 ifree(dp); 1366 return; 1367 } 1368 rp->r_wday = lp->l_value; 1369 } 1370 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || 1371 rp->r_dayofmonth <= 0 || 1372 (rp->r_dayofmonth > len_months[1][rp->r_month])) { 1373 error(_("invalid day of month")); 1374 ifree(dp); 1375 return; 1376 } 1377 } 1378 ifree(dp); 1379 } 1380 1381 static void 1382 convert(val, buf) 1383 const long val; 1384 char * const buf; 1385 { 1386 register int i; 1387 register long shift; 1388 1389 for (i = 0, shift = 24; i < 4; ++i, shift -= 8) 1390 buf[i] = val >> shift; 1391 } 1392 1393 static void 1394 puttzcode(val, fp) 1395 const long val; 1396 FILE * const fp; 1397 { 1398 char buf[4]; 1399 1400 convert(val, buf); 1401 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); 1402 } 1403 1404 static int 1405 atcomp(avp, bvp) 1406 void * avp; 1407 void * bvp; 1408 { 1409 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) 1410 return -1; 1411 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) 1412 return 1; 1413 else return 0; 1414 } 1415 1416 static void 1417 writezone(name) 1418 const char * const name; 1419 { 1420 register FILE * fp; 1421 register int i, j; 1422 static char * fullname; 1423 static struct tzhead tzh; 1424 time_t ats[TZ_MAX_TIMES]; 1425 unsigned char types[TZ_MAX_TIMES]; 1426 1427 /* 1428 ** Sort. 1429 */ 1430 if (timecnt > 1) 1431 (void) qsort((void *) attypes, (size_t) timecnt, 1432 (size_t) sizeof *attypes, atcomp); 1433 /* 1434 ** Optimize. 1435 */ 1436 { 1437 int fromi; 1438 int toi; 1439 1440 toi = 0; 1441 fromi = 0; 1442 while (fromi < timecnt && attypes[fromi].at < min_time) 1443 ++fromi; 1444 if (isdsts[0] == 0) 1445 while (fromi < timecnt && attypes[fromi].type == 0) 1446 ++fromi; /* handled by default rule */ 1447 for ( ; fromi < timecnt; ++fromi) { 1448 if (toi != 0 1449 && ((attypes[fromi].at 1450 + gmtoffs[attypes[toi - 1].type]) 1451 <= (attypes[toi - 1].at 1452 + gmtoffs[toi == 1 ? 0 1453 : attypes[toi - 2].type]))) { 1454 attypes[toi - 1].type = attypes[fromi].type; 1455 continue; 1456 } 1457 if (toi == 0 || 1458 attypes[toi - 1].type != attypes[fromi].type) 1459 attypes[toi++] = attypes[fromi]; 1460 } 1461 timecnt = toi; 1462 } 1463 /* 1464 ** Transfer. 1465 */ 1466 for (i = 0; i < timecnt; ++i) { 1467 ats[i] = attypes[i].at; 1468 types[i] = attypes[i].type; 1469 } 1470 fullname = erealloc(fullname, 1471 (int) (strlen(directory) + 1 + strlen(name) + 1)); 1472 (void) sprintf(fullname, "%s/%s", directory, name); 1473 /* 1474 ** Remove old file, if any, to snap links. 1475 */ 1476 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { 1477 const char *e = strerror(errno); 1478 1479 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), 1480 progname, fullname, e); 1481 (void) exit(EXIT_FAILURE); 1482 } 1483 if ((fp = fopen(fullname, "wb")) == NULL) { 1484 if (mkdirs(fullname) != 0) 1485 (void) exit(EXIT_FAILURE); 1486 if ((fp = fopen(fullname, "wb")) == NULL) { 1487 const char *e = strerror(errno); 1488 1489 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), 1490 progname, fullname, e); 1491 (void) exit(EXIT_FAILURE); 1492 } 1493 } 1494 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); 1495 convert(eitol(typecnt), tzh.tzh_ttisstdcnt); 1496 convert(eitol(leapcnt), tzh.tzh_leapcnt); 1497 convert(eitol(timecnt), tzh.tzh_timecnt); 1498 convert(eitol(typecnt), tzh.tzh_typecnt); 1499 convert(eitol(charcnt), tzh.tzh_charcnt); 1500 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); 1501 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) 1502 DO(tzh_magic); 1503 DO(tzh_reserved); 1504 DO(tzh_ttisgmtcnt); 1505 DO(tzh_ttisstdcnt); 1506 DO(tzh_leapcnt); 1507 DO(tzh_timecnt); 1508 DO(tzh_typecnt); 1509 DO(tzh_charcnt); 1510 #undef DO 1511 for (i = 0; i < timecnt; ++i) { 1512 j = leapcnt; 1513 while (--j >= 0) 1514 if (ats[i] >= trans[j]) { 1515 ats[i] = tadd(ats[i], corr[j]); 1516 break; 1517 } 1518 puttzcode((long) ats[i], fp); 1519 } 1520 if (timecnt > 0) 1521 (void) fwrite((void *) types, (size_t) sizeof types[0], 1522 (size_t) timecnt, fp); 1523 for (i = 0; i < typecnt; ++i) { 1524 puttzcode((long) gmtoffs[i], fp); 1525 (void) putc(isdsts[i], fp); 1526 (void) putc(abbrinds[i], fp); 1527 } 1528 if (charcnt != 0) 1529 (void) fwrite((void *) chars, (size_t) sizeof chars[0], 1530 (size_t) charcnt, fp); 1531 for (i = 0; i < leapcnt; ++i) { 1532 if (roll[i]) { 1533 if (timecnt == 0 || trans[i] < ats[0]) { 1534 j = 0; 1535 while (isdsts[j]) 1536 if (++j >= typecnt) { 1537 j = 0; 1538 break; 1539 } 1540 } else { 1541 j = 1; 1542 while (j < timecnt && trans[i] >= ats[j]) 1543 ++j; 1544 j = types[j - 1]; 1545 } 1546 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); 1547 } else puttzcode((long) trans[i], fp); 1548 puttzcode((long) corr[i], fp); 1549 } 1550 for (i = 0; i < typecnt; ++i) 1551 (void) putc(ttisstds[i], fp); 1552 for (i = 0; i < typecnt; ++i) 1553 (void) putc(ttisgmts[i], fp); 1554 if (ferror(fp) || fclose(fp)) { 1555 (void) fprintf(stderr, _("%s: Error writing %s\n"), 1556 progname, fullname); 1557 (void) exit(EXIT_FAILURE); 1558 } 1559 } 1560 1561 static void 1562 doabbr(abbr, format, letters, isdst) 1563 char * const abbr; 1564 const char * const format; 1565 const char * const letters; 1566 const int isdst; 1567 { 1568 if (strchr(format, '/') == NULL) { 1569 if (letters == NULL) 1570 (void) strcpy(abbr, format); 1571 else (void) sprintf(abbr, format, letters); 1572 } else if (isdst) 1573 (void) strcpy(abbr, strchr(format, '/') + 1); 1574 else { 1575 (void) strcpy(abbr, format); 1576 *strchr(abbr, '/') = '\0'; 1577 } 1578 } 1579 1580 static void 1581 outzone(zpfirst, zonecount) 1582 const struct zone * const zpfirst; 1583 const int zonecount; 1584 { 1585 register const struct zone * zp; 1586 register struct rule * rp; 1587 register int i, j; 1588 register int usestart, useuntil; 1589 register time_t starttime, untiltime; 1590 register long gmtoff; 1591 register long stdoff; 1592 register int year; 1593 register long startoff; 1594 register int startttisstd; 1595 register int startttisgmt; 1596 register int type; 1597 char startbuf[BUFSIZ]; 1598 1599 INITIALIZE(untiltime); 1600 INITIALIZE(starttime); 1601 /* 1602 ** Now. . .finally. . .generate some useful data! 1603 */ 1604 timecnt = 0; 1605 typecnt = 0; 1606 charcnt = 0; 1607 /* 1608 ** Thanks to Earl Chew (earl (at) dnd.icp.nec.com.au) 1609 ** for noting the need to unconditionally initialize startttisstd. 1610 */ 1611 startttisstd = FALSE; 1612 startttisgmt = FALSE; 1613 for (i = 0; i < zonecount; ++i) { 1614 /* 1615 ** A guess that may well be corrected later. 1616 */ 1617 stdoff = 0; 1618 zp = &zpfirst[i]; 1619 usestart = i > 0 && (zp - 1)->z_untiltime > min_time; 1620 useuntil = i < (zonecount - 1); 1621 if (useuntil && zp->z_untiltime <= min_time) 1622 continue; 1623 gmtoff = zp->z_gmtoff; 1624 eat(zp->z_filename, zp->z_linenum); 1625 *startbuf = '\0'; 1626 startoff = zp->z_gmtoff; 1627 if (zp->z_nrules == 0) { 1628 stdoff = zp->z_stdoff; 1629 doabbr(startbuf, zp->z_format, 1630 (char *) NULL, stdoff != 0); 1631 type = addtype(oadd(zp->z_gmtoff, stdoff), 1632 startbuf, stdoff != 0, startttisstd, 1633 startttisgmt); 1634 if (usestart) { 1635 addtt(starttime, type); 1636 usestart = FALSE; 1637 } else if (stdoff != 0) 1638 addtt(min_time, type); 1639 } else for (year = min_year; year <= max_year; ++year) { 1640 if (useuntil && year > zp->z_untilrule.r_hiyear) 1641 break; 1642 /* 1643 ** Mark which rules to do in the current year. 1644 ** For those to do, calculate rpytime(rp, year); 1645 */ 1646 for (j = 0; j < zp->z_nrules; ++j) { 1647 rp = &zp->z_rules[j]; 1648 eats(zp->z_filename, zp->z_linenum, 1649 rp->r_filename, rp->r_linenum); 1650 rp->r_todo = year >= rp->r_loyear && 1651 year <= rp->r_hiyear && 1652 yearistype(year, rp->r_yrtype); 1653 if (rp->r_todo) 1654 rp->r_temp = rpytime(rp, year); 1655 } 1656 for ( ; ; ) { 1657 register int k; 1658 register time_t jtime, ktime; 1659 register long offset; 1660 char buf[BUFSIZ]; 1661 1662 INITIALIZE(ktime); 1663 if (useuntil) { 1664 /* 1665 ** Turn untiltime into UTC 1666 ** assuming the current gmtoff and 1667 ** stdoff values. 1668 */ 1669 untiltime = zp->z_untiltime; 1670 if (!zp->z_untilrule.r_todisgmt) 1671 untiltime = tadd(untiltime, 1672 -gmtoff); 1673 if (!zp->z_untilrule.r_todisstd) 1674 untiltime = tadd(untiltime, 1675 -stdoff); 1676 } 1677 /* 1678 ** Find the rule (of those to do, if any) 1679 ** that takes effect earliest in the year. 1680 */ 1681 k = -1; 1682 for (j = 0; j < zp->z_nrules; ++j) { 1683 rp = &zp->z_rules[j]; 1684 if (!rp->r_todo) 1685 continue; 1686 eats(zp->z_filename, zp->z_linenum, 1687 rp->r_filename, rp->r_linenum); 1688 offset = rp->r_todisgmt ? 0 : gmtoff; 1689 if (!rp->r_todisstd) 1690 offset = oadd(offset, stdoff); 1691 jtime = rp->r_temp; 1692 if (jtime == min_time || 1693 jtime == max_time) 1694 continue; 1695 jtime = tadd(jtime, -offset); 1696 if (k < 0 || jtime < ktime) { 1697 k = j; 1698 ktime = jtime; 1699 } 1700 } 1701 if (k < 0) 1702 break; /* go on to next year */ 1703 rp = &zp->z_rules[k]; 1704 rp->r_todo = FALSE; 1705 if (useuntil && ktime >= untiltime) 1706 break; 1707 stdoff = rp->r_stdoff; 1708 if (usestart && ktime == starttime) 1709 usestart = FALSE; 1710 if (usestart) { 1711 if (ktime < starttime) { 1712 startoff = oadd(zp->z_gmtoff, 1713 stdoff); 1714 doabbr(startbuf, zp->z_format, 1715 rp->r_abbrvar, 1716 rp->r_stdoff != 0); 1717 continue; 1718 } 1719 if (*startbuf == '\0' && 1720 startoff == oadd(zp->z_gmtoff, 1721 stdoff)) { 1722 doabbr(startbuf, zp->z_format, 1723 rp->r_abbrvar, 1724 rp->r_stdoff != 0); 1725 } 1726 } 1727 eats(zp->z_filename, zp->z_linenum, 1728 rp->r_filename, rp->r_linenum); 1729 doabbr(buf, zp->z_format, rp->r_abbrvar, 1730 rp->r_stdoff != 0); 1731 offset = oadd(zp->z_gmtoff, rp->r_stdoff); 1732 type = addtype(offset, buf, rp->r_stdoff != 0, 1733 rp->r_todisstd, rp->r_todisgmt); 1734 addtt(ktime, type); 1735 } 1736 } 1737 if (usestart) { 1738 if (*startbuf == '\0' && 1739 zp->z_format != NULL && 1740 strchr(zp->z_format, '%') == NULL && 1741 strchr(zp->z_format, '/') == NULL) 1742 (void) strcpy(startbuf, zp->z_format); 1743 eat(zp->z_filename, zp->z_linenum); 1744 if (*startbuf == '\0') 1745 error(_("can't determine time zone abbreviation to use just after until time")); 1746 else addtt(starttime, 1747 addtype(startoff, startbuf, 1748 startoff != zp->z_gmtoff, 1749 startttisstd, 1750 startttisgmt)); 1751 } 1752 /* 1753 ** Now we may get to set starttime for the next zone line. 1754 */ 1755 if (useuntil) { 1756 startttisstd = zp->z_untilrule.r_todisstd; 1757 startttisgmt = zp->z_untilrule.r_todisgmt; 1758 starttime = zp->z_untiltime; 1759 if (!startttisstd) 1760 starttime = tadd(starttime, -stdoff); 1761 if (!startttisgmt) 1762 starttime = tadd(starttime, -gmtoff); 1763 } 1764 } 1765 writezone(zpfirst->z_name); 1766 } 1767 1768 static void 1769 addtt(starttime, type) 1770 const time_t starttime; 1771 int type; 1772 { 1773 if (starttime <= min_time || 1774 (timecnt == 1 && attypes[0].at < min_time)) { 1775 gmtoffs[0] = gmtoffs[type]; 1776 isdsts[0] = isdsts[type]; 1777 ttisstds[0] = ttisstds[type]; 1778 ttisgmts[0] = ttisgmts[type]; 1779 if (abbrinds[type] != 0) 1780 (void) strcpy(chars, &chars[abbrinds[type]]); 1781 abbrinds[0] = 0; 1782 charcnt = strlen(chars) + 1; 1783 typecnt = 1; 1784 timecnt = 0; 1785 type = 0; 1786 } 1787 if (timecnt >= TZ_MAX_TIMES) { 1788 error(_("too many transitions?!")); 1789 (void) exit(EXIT_FAILURE); 1790 } 1791 attypes[timecnt].at = starttime; 1792 attypes[timecnt].type = type; 1793 ++timecnt; 1794 } 1795 1796 static int 1797 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) 1798 const long gmtoff; 1799 const char * const abbr; 1800 const int isdst; 1801 const int ttisstd; 1802 const int ttisgmt; 1803 { 1804 register int i, j; 1805 1806 if (isdst != TRUE && isdst != FALSE) { 1807 error(_("internal error - addtype called with bad isdst")); 1808 (void) exit(EXIT_FAILURE); 1809 } 1810 if (ttisstd != TRUE && ttisstd != FALSE) { 1811 error(_("internal error - addtype called with bad ttisstd")); 1812 (void) exit(EXIT_FAILURE); 1813 } 1814 if (ttisgmt != TRUE && ttisgmt != FALSE) { 1815 error(_("internal error - addtype called with bad ttisgmt")); 1816 (void) exit(EXIT_FAILURE); 1817 } 1818 /* 1819 ** See if there's already an entry for this zone type. 1820 ** If so, just return its index. 1821 */ 1822 for (i = 0; i < typecnt; ++i) { 1823 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && 1824 strcmp(abbr, &chars[abbrinds[i]]) == 0 && 1825 ttisstd == ttisstds[i] && 1826 ttisgmt == ttisgmts[i]) 1827 return i; 1828 } 1829 /* 1830 ** There isn't one; add a new one, unless there are already too 1831 ** many. 1832 */ 1833 if (typecnt >= TZ_MAX_TYPES) { 1834 error(_("too many local time types")); 1835 (void) exit(EXIT_FAILURE); 1836 } 1837 gmtoffs[i] = gmtoff; 1838 isdsts[i] = isdst; 1839 ttisstds[i] = ttisstd; 1840 ttisgmts[i] = ttisgmt; 1841 1842 for (j = 0; j < charcnt; ++j) 1843 if (strcmp(&chars[j], abbr) == 0) 1844 break; 1845 if (j == charcnt) 1846 newabbr(abbr); 1847 abbrinds[i] = j; 1848 ++typecnt; 1849 return i; 1850 } 1851 1852 static void 1853 leapadd(t, positive, rolling, count) 1854 const time_t t; 1855 const int positive; 1856 const int rolling; 1857 int count; 1858 { 1859 register int i, j; 1860 1861 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { 1862 error(_("too many leap seconds")); 1863 (void) exit(EXIT_FAILURE); 1864 } 1865 for (i = 0; i < leapcnt; ++i) 1866 if (t <= trans[i]) { 1867 if (t == trans[i]) { 1868 error(_("repeated leap second moment")); 1869 (void) exit(EXIT_FAILURE); 1870 } 1871 break; 1872 } 1873 do { 1874 for (j = leapcnt; j > i; --j) { 1875 trans[j] = trans[j - 1]; 1876 corr[j] = corr[j - 1]; 1877 roll[j] = roll[j - 1]; 1878 } 1879 trans[i] = t; 1880 corr[i] = positive ? 1L : eitol(-count); 1881 roll[i] = rolling; 1882 ++leapcnt; 1883 } while (positive && --count != 0); 1884 } 1885 1886 static void 1887 adjleap P((void)) 1888 { 1889 register int i; 1890 register long last = 0; 1891 1892 /* 1893 ** propagate leap seconds forward 1894 */ 1895 for (i = 0; i < leapcnt; ++i) { 1896 trans[i] = tadd(trans[i], last); 1897 last = corr[i] += last; 1898 } 1899 } 1900 1901 static int 1902 yearistype(year, type) 1903 const int year; 1904 const char * const type; 1905 { 1906 static char * buf; 1907 int result; 1908 1909 if (type == NULL || *type == '\0') 1910 return TRUE; 1911 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); 1912 (void) sprintf(buf, "%s %d %s", yitcommand, year, type); 1913 result = system(buf); 1914 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) { 1915 case 0: 1916 return TRUE; 1917 case 1: 1918 return FALSE; 1919 } 1920 error(_("Wild result from command execution")); 1921 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), 1922 progname, buf, result); 1923 for ( ; ; ) 1924 (void) exit(EXIT_FAILURE); 1925 } 1926 1927 static int 1928 lowerit(a) 1929 int a; 1930 { 1931 a = (unsigned char) a; 1932 return (isascii(a) && isupper(a)) ? tolower(a) : a; 1933 } 1934 1935 static int 1936 ciequal(ap, bp) /* case-insensitive equality */ 1937 register const char * ap; 1938 register const char * bp; 1939 { 1940 while (lowerit(*ap) == lowerit(*bp++)) 1941 if (*ap++ == '\0') 1942 return TRUE; 1943 return FALSE; 1944 } 1945 1946 static int 1947 itsabbr(abbr, word) 1948 register const char * abbr; 1949 register const char * word; 1950 { 1951 if (lowerit(*abbr) != lowerit(*word)) 1952 return FALSE; 1953 ++word; 1954 while (*++abbr != '\0') 1955 do { 1956 if (*word == '\0') 1957 return FALSE; 1958 } while (lowerit(*word++) != lowerit(*abbr)); 1959 return TRUE; 1960 } 1961 1962 static const struct lookup * 1963 byword(word, table) 1964 register const char * const word; 1965 register const struct lookup * const table; 1966 { 1967 register const struct lookup * foundlp; 1968 register const struct lookup * lp; 1969 1970 if (word == NULL || table == NULL) 1971 return NULL; 1972 /* 1973 ** Look for exact match. 1974 */ 1975 for (lp = table; lp->l_word != NULL; ++lp) 1976 if (ciequal(word, lp->l_word)) 1977 return lp; 1978 /* 1979 ** Look for inexact match. 1980 */ 1981 foundlp = NULL; 1982 for (lp = table; lp->l_word != NULL; ++lp) 1983 if (itsabbr(word, lp->l_word)) { 1984 if (foundlp == NULL) 1985 foundlp = lp; 1986 else return NULL; /* multiple inexact matches */ 1987 } 1988 return foundlp; 1989 } 1990 1991 static char ** 1992 getfields(cp) 1993 register char * cp; 1994 { 1995 register char * dp; 1996 register char ** array; 1997 register int nsubs; 1998 1999 if (cp == NULL) 2000 return NULL; 2001 array = (char **) (void *) 2002 emalloc((int) ((strlen(cp) + 1) * sizeof *array)); 2003 nsubs = 0; 2004 for ( ; ; ) { 2005 while (isascii(*cp) && isspace((unsigned char) *cp)) 2006 ++cp; 2007 if (*cp == '\0' || *cp == '#') 2008 break; 2009 array[nsubs++] = dp = cp; 2010 do { 2011 if ((*dp = *cp++) != '"') 2012 ++dp; 2013 else while ((*dp = *cp++) != '"') 2014 if (*dp != '\0') 2015 ++dp; 2016 else error(_("Odd number of quotation marks")); 2017 } while (*cp != '\0' && *cp != '#' && 2018 (!isascii(*cp) || !isspace((unsigned char) *cp))); 2019 if (isascii(*cp) && isspace((unsigned char) *cp)) 2020 ++cp; 2021 *dp = '\0'; 2022 } 2023 array[nsubs] = NULL; 2024 return array; 2025 } 2026 2027 static long 2028 oadd(t1, t2) 2029 const long t1; 2030 const long t2; 2031 { 2032 register long t; 2033 2034 t = t1 + t2; 2035 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2036 error(_("time overflow")); 2037 (void) exit(EXIT_FAILURE); 2038 } 2039 return t; 2040 } 2041 2042 static time_t 2043 tadd(t1, t2) 2044 const time_t t1; 2045 const long t2; 2046 { 2047 register time_t t; 2048 2049 if (t1 == max_time && t2 > 0) 2050 return max_time; 2051 if (t1 == min_time && t2 < 0) 2052 return min_time; 2053 t = t1 + t2; 2054 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { 2055 error(_("time overflow")); 2056 (void) exit(EXIT_FAILURE); 2057 } 2058 return t; 2059 } 2060 2061 /* 2062 ** Given a rule, and a year, compute the date - in seconds since January 1, 2063 ** 1970, 00:00 LOCAL time - in that year that the rule refers to. 2064 */ 2065 2066 static time_t 2067 rpytime(rp, wantedy) 2068 register const struct rule * const rp; 2069 register const int wantedy; 2070 { 2071 register int y, m, i; 2072 register long dayoff; /* with a nod to Margaret O. */ 2073 register time_t t; 2074 2075 if (wantedy == INT_MIN) 2076 return min_time; 2077 if (wantedy == INT_MAX) 2078 return max_time; 2079 dayoff = 0; 2080 m = TM_JANUARY; 2081 y = EPOCH_YEAR; 2082 while (wantedy != y) { 2083 if (wantedy > y) { 2084 i = len_years[isleap(y)]; 2085 ++y; 2086 } else { 2087 --y; 2088 i = -len_years[isleap(y)]; 2089 } 2090 dayoff = oadd(dayoff, eitol(i)); 2091 } 2092 while (m != rp->r_month) { 2093 i = len_months[isleap(y)][m]; 2094 dayoff = oadd(dayoff, eitol(i)); 2095 ++m; 2096 } 2097 i = rp->r_dayofmonth; 2098 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { 2099 if (rp->r_dycode == DC_DOWLEQ) 2100 --i; 2101 else { 2102 error(_("use of 2/29 in non leap-year")); 2103 (void) exit(EXIT_FAILURE); 2104 } 2105 } 2106 --i; 2107 dayoff = oadd(dayoff, eitol(i)); 2108 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { 2109 register long wday; 2110 2111 #define LDAYSPERWEEK ((long) DAYSPERWEEK) 2112 wday = eitol(EPOCH_WDAY); 2113 /* 2114 ** Don't trust mod of negative numbers. 2115 */ 2116 if (dayoff >= 0) 2117 wday = (wday + dayoff) % LDAYSPERWEEK; 2118 else { 2119 wday -= ((-dayoff) % LDAYSPERWEEK); 2120 if (wday < 0) 2121 wday += LDAYSPERWEEK; 2122 } 2123 while (wday != eitol(rp->r_wday)) 2124 if (rp->r_dycode == DC_DOWGEQ) { 2125 dayoff = oadd(dayoff, (long) 1); 2126 if (++wday >= LDAYSPERWEEK) 2127 wday = 0; 2128 ++i; 2129 } else { 2130 dayoff = oadd(dayoff, (long) -1); 2131 if (--wday < 0) 2132 wday = LDAYSPERWEEK - 1; 2133 --i; 2134 } 2135 if (i < 0 || i >= len_months[isleap(y)][m]) { 2136 error(_("no day in month matches rule")); 2137 (void) exit(EXIT_FAILURE); 2138 } 2139 } 2140 if (dayoff < 0 && !TYPE_SIGNED(time_t)) 2141 return min_time; 2142 t = (time_t) dayoff * SECSPERDAY; 2143 /* 2144 ** Cheap overflow check. 2145 */ 2146 if (t / SECSPERDAY != dayoff) 2147 return (dayoff > 0) ? max_time : min_time; 2148 return tadd(t, rp->r_tod); 2149 } 2150 2151 static void 2152 newabbr(string) 2153 const char * const string; 2154 { 2155 register int i; 2156 2157 i = strlen(string) + 1; 2158 if (charcnt + i > TZ_MAX_CHARS) { 2159 error(_("too many, or too long, time zone abbreviations")); 2160 (void) exit(EXIT_FAILURE); 2161 } 2162 (void) strcpy(&chars[charcnt], string); 2163 charcnt += eitol(i); 2164 } 2165 2166 static int 2167 mkdirs(argname) 2168 char * const argname; 2169 { 2170 register char * name; 2171 register char * cp; 2172 2173 if (argname == NULL || *argname == '\0') 2174 return 0; 2175 cp = name = ecpyalloc(argname); 2176 while ((cp = strchr(cp + 1, '/')) != 0) { 2177 *cp = '\0'; 2178 #ifndef unix 2179 /* 2180 ** DOS drive specifier? 2181 */ 2182 if (isalpha((unsigned char) name[0]) && 2183 name[1] == ':' && name[2] == '\0') { 2184 *cp = '/'; 2185 continue; 2186 } 2187 #endif /* !defined unix */ 2188 if (!itsdir(name)) { 2189 /* 2190 ** It doesn't seem to exist, so we try to create it. 2191 ** Creation may fail because of the directory being 2192 ** created by some other multiprocessor, so we get 2193 ** to do extra checking. 2194 */ 2195 if (mkdir(name, MKDIR_UMASK) != 0) { 2196 const char *e = strerror(errno); 2197 2198 if (errno != EEXIST || !itsdir(name)) { 2199 (void) fprintf(stderr, 2200 _("%s: Can't create directory %s: %s\n"), 2201 progname, name, e); 2202 ifree(name); 2203 return -1; 2204 } 2205 } 2206 } 2207 *cp = '/'; 2208 } 2209 ifree(name); 2210 return 0; 2211 } 2212 2213 static long 2214 eitol(i) 2215 const int i; 2216 { 2217 long l; 2218 2219 l = i; 2220 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { 2221 (void) fprintf(stderr, 2222 _("%s: %d did not sign extend correctly\n"), 2223 progname, i); 2224 (void) exit(EXIT_FAILURE); 2225 } 2226 return l; 2227 } 2228 2229 /* 2230 ** UNIX was a registered trademark of UNIX System Laboratories in 1993. 2231 */ 2232
Indexes created Thu Oct 02 14:10:14 GMT 2025