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[glibc.git] / timezone / zic.c
blob6fdcfcb66a84b45dac70362c6213e854626f94a4
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_CTYPE, "");
475 (void) setlocale(LC_MESSAGES, "");
476 #ifdef TZ_DOMAINDIR
477 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
478 #endif /* defined TEXTDOMAINDIR */
479 (void) textdomain(TZ_DOMAIN);
480 #endif /* HAVE_GETTEXT - 0 */
481 progname = argv[0];
482 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
483 switch (c) {
484 default:
485 usage();
486 case 'd':
487 if (directory == NULL)
488 directory = optarg;
489 else {
490 (void) fprintf(stderr,
491 _("%s: More than one -d option specified\n"),
492 progname);
493 (void) exit(EXIT_FAILURE);
494 }
495 break;
496 case 'l':
497 if (lcltime == NULL)
498 lcltime = optarg;
499 else {
500 (void) fprintf(stderr,
501 _("%s: More than one -l option specified\n"),
502 progname);
503 (void) exit(EXIT_FAILURE);
504 }
505 break;
506 case 'p':
507 if (psxrules == NULL)
508 psxrules = optarg;
509 else {
510 (void) fprintf(stderr,
511 _("%s: More than one -p option specified\n"),
512 progname);
513 (void) exit(EXIT_FAILURE);
514 }
515 break;
516 case 'y':
517 if (yitcommand == NULL)
518 yitcommand = optarg;
519 else {
520 (void) fprintf(stderr,
521 _("%s: More than one -y option specified\n"),
522 progname);
523 (void) exit(EXIT_FAILURE);
524 }
525 break;
526 case 'L':
527 if (leapsec == NULL)
528 leapsec = optarg;
529 else {
530 (void) fprintf(stderr,
531 _("%s: More than one -L option specified\n"),
532 progname);
533 (void) exit(EXIT_FAILURE);
534 }
535 break;
536 case 'v':
537 noise = TRUE;
538 break;
539 case 's':
540 sflag = TRUE;
541 break;
542 }
543 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
544 usage(); /* usage message by request */
545 if (directory == NULL)
546 directory = TZDIR;
547 if (yitcommand == NULL)
548 yitcommand = "yearistype";
549
550 setboundaries();
551
552 if (optind < argc && leapsec != NULL) {
553 infile(leapsec);
554 adjleap();
555 }
556
557 for (i = optind; i < argc; ++i)
558 infile(argv[i]);
559 if (errors)
560 (void) exit(EXIT_FAILURE);
561 associate();
562 for (i = 0; i < nzones; i = j) {
563 /*
564 ** Find the next non-continuation zone entry.
565 */
566 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
567 continue;
568 outzone(&zones[i], j - i);
569 }
570 /*
571 ** Make links.
572 */
573 for (i = 0; i < nlinks; ++i) {
574 eat(links[i].l_filename, links[i].l_linenum);
575 dolink(links[i].l_from, links[i].l_to);
576 }
577 if (lcltime != NULL) {
578 eat("command line", 1);
579 dolink(lcltime, TZDEFAULT);
580 }
581 if (psxrules != NULL) {
582 eat("command line", 1);
583 dolink(psxrules, TZDEFRULES);
584 }
585 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
586 }
587
588 static void
589 dolink(fromfile, tofile)
590 const char * const fromfile;
591 const char * const tofile;
592 {
593 register char * fromname;
594 register char * toname;
595
596 if (fromfile[0] == '/')
597 fromname = ecpyalloc(fromfile);
598 else {
599 fromname = ecpyalloc(directory);
600 fromname = ecatalloc(fromname, "/");
601 fromname = ecatalloc(fromname, fromfile);
602 }
603 if (tofile[0] == '/')
604 toname = ecpyalloc(tofile);
605 else {
606 toname = ecpyalloc(directory);
607 toname = ecatalloc(toname, "/");
608 toname = ecatalloc(toname, tofile);
609 }
610 /*
611 ** We get to be careful here since
612 ** there's a fair chance of root running us.
613 */
614 if (!itsdir(toname))
615 (void) remove(toname);
616 if (link(fromname, toname) != 0) {
617 int result;
618
619 if (mkdirs(toname) != 0)
620 (void) exit(EXIT_FAILURE);
621
622 result = link(fromname, toname);
623 #if (HAVE_SYMLINK - 0)
624 if (result != 0) {
625 const char *s = tofile;
626 register char *symlinkcontents = NULL;
627 while ((s = strchr(s+1, '/')) != NULL)
628 symlinkcontents = ecatalloc(symlinkcontents, "../");
629 symlinkcontents = ecatalloc(symlinkcontents, fromname);
630
631 result = unlink(toname);
632 if (result != 0 && errno != ENOENT) {
633 const char *e = strerror(errno);
634
635 (void) fprintf(stderr,
636 _("%s: Can't unlink %s: %s\n"),
637 progname, toname, e);
638 (void) exit(EXIT_FAILURE);
639 }
640
641 result = symlink(symlinkcontents, toname);
642 if (result == 0)
643 warning(_("hard link failed, symbolic link used"));
644 ifree(symlinkcontents);
645 }
646 #endif
647 if (result != 0) {
648 const char *e = strerror(errno);
649
650 (void) fprintf(stderr,
651 _("%s: Can't link from %s to %s: %s\n"),
652 progname, fromname, toname, e);
653 (void) exit(EXIT_FAILURE);
654 }
655 }
656 ifree(fromname);
657 ifree(toname);
658 }
659
660 #ifndef INT_MAX
661 #define INT_MAX ((int) (((unsigned)~0)>>1))
662 #endif /* !defined INT_MAX */
663
664 #ifndef INT_MIN
665 #define INT_MIN ((int) ~(((unsigned)~0)>>1))
666 #endif /* !defined INT_MIN */
667
668 /*
669 ** The tz file format currently allows at most 32-bit quantities.
670 ** This restriction should be removed before signed 32-bit values
671 ** wrap around in 2038, but unfortunately this will require a
672 ** change to the tz file format.
673 */
674
675 #define MAX_BITS_IN_FILE 32
676 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
677
678 static void
679 setboundaries P((void))
680 {
681 if (TYPE_SIGNED(time_t)) {
682 min_time = ~ (time_t) 0;
683 min_time <<= TIME_T_BITS_IN_FILE - 1;
684 max_time = ~ (time_t) 0 - min_time;
685 if (sflag)
686 min_time = 0;
687 } else {
688 min_time = 0;
689 max_time = 2 - sflag;
690 max_time <<= TIME_T_BITS_IN_FILE - 1;
691 --max_time;
692 }
693 min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
694 max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
695 min_year_representable = min_year;
696 max_year_representable = max_year;
697 }
698
699 static int
700 itsdir(name)
701 const char * const name;
702 {
703 register char * myname;
704 register int accres;
705
706 myname = ecpyalloc(name);
707 myname = ecatalloc(myname, "/.");
708 accres = access(myname, F_OK);
709 ifree(myname);
710 return accres == 0;
711 }
712
713 /*
714 ** Associate sets of rules with zones.
715 */
716
717 /*
718 ** Sort by rule name.
719 */
720
721 static int
722 rcomp(cp1, cp2)
723 const void * cp1;
724 const void * cp2;
725 {
726 return strcmp(((const struct rule *) cp1)->r_name,
727 ((const struct rule *) cp2)->r_name);
728 }
729
730 static void
731 associate P((void))
732 {
733 register struct zone * zp;
734 register struct rule * rp;
735 register int base, out;
736 register int i, j;
737
738 if (nrules != 0) {
739 (void) qsort((void *) rules, (size_t) nrules,
740 (size_t) sizeof *rules, rcomp);
741 for (i = 0; i < nrules - 1; ++i) {
742 if (strcmp(rules[i].r_name,
743 rules[i + 1].r_name) != 0)
744 continue;
745 if (strcmp(rules[i].r_filename,
746 rules[i + 1].r_filename) == 0)
747 continue;
748 eat(rules[i].r_filename, rules[i].r_linenum);
749 warning(_("same rule name in multiple files"));
750 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
751 warning(_("same rule name in multiple files"));
752 for (j = i + 2; j < nrules; ++j) {
753 if (strcmp(rules[i].r_name,
754 rules[j].r_name) != 0)
755 break;
756 if (strcmp(rules[i].r_filename,
757 rules[j].r_filename) == 0)
758 continue;
759 if (strcmp(rules[i + 1].r_filename,
760 rules[j].r_filename) == 0)
761 continue;
762 break;
763 }
764 i = j - 1;
765 }
766 }
767 for (i = 0; i < nzones; ++i) {
768 zp = &zones[i];
769 zp->z_rules = NULL;
770 zp->z_nrules = 0;
771 }
772 for (base = 0; base < nrules; base = out) {
773 rp = &rules[base];
774 for (out = base + 1; out < nrules; ++out)
775 if (strcmp(rp->r_name, rules[out].r_name) != 0)
776 break;
777 for (i = 0; i < nzones; ++i) {
778 zp = &zones[i];
779 if (strcmp(zp->z_rule, rp->r_name) != 0)
780 continue;
781 zp->z_rules = rp;
782 zp->z_nrules = out - base;
783 }
784 }
785 for (i = 0; i < nzones; ++i) {
786 zp = &zones[i];
787 if (zp->z_nrules == 0) {
788 /*
789 ** Maybe we have a local standard time offset.
790 */
791 eat(zp->z_filename, zp->z_linenum);
792 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
793 TRUE);
794 /*
795 ** Note, though, that if there's no rule,
796 ** a '%s' in the format is a bad thing.
797 */
798 if (strchr(zp->z_format, '%') != 0)
799 error(_("%s in ruleless zone"));
800 }
801 }
802 if (errors)
803 (void) exit(EXIT_FAILURE);
804 }
805
806 static void
807 infile(name)
808 const char * name;
809 {
810 register FILE * fp;
811 register char ** fields;
812 register char * cp;
813 register const struct lookup * lp;
814 register int nfields;
815 register int wantcont;
816 register int num;
817 char buf[BUFSIZ];
818
819 if (strcmp(name, "-") == 0) {
820 name = _("standard input");
821 fp = stdin;
822 } else if ((fp = fopen(name, "r")) == NULL) {
823 const char *e = strerror(errno);
824
825 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
826 progname, name, e);
827 (void) exit(EXIT_FAILURE);
828 }
829 wantcont = FALSE;
830 for (num = 1; ; ++num) {
831 eat(name, num);
832 if (fgets(buf, (int) sizeof buf, fp) != buf)
833 break;
834 cp = strchr(buf, '\n');
835 if (cp == NULL) {
836 error(_("line too long"));
837 (void) exit(EXIT_FAILURE);
838 }
839 *cp = '\0';
840 fields = getfields(buf);
841 nfields = 0;
842 while (fields[nfields] != NULL) {
843 static char nada;
844
845 if (strcmp(fields[nfields], "-") == 0)
846 fields[nfields] = &nada;
847 ++nfields;
848 }
849 if (nfields == 0) {
850 /* nothing to do */
851 } else if (wantcont) {
852 wantcont = inzcont(fields, nfields);
853 } else {
854 lp = byword(fields[0], line_codes);
855 if (lp == NULL)
856 error(_("input line of unknown type"));
857 else switch ((int) (lp->l_value)) {
858 case LC_RULE:
859 inrule(fields, nfields);
860 wantcont = FALSE;
861 break;
862 case LC_ZONE:
863 wantcont = inzone(fields, nfields);
864 break;
865 case LC_LINK:
866 inlink(fields, nfields);
867 wantcont = FALSE;
868 break;
869 case LC_LEAP:
870 if (name != leapsec)
871 (void) fprintf(stderr,
872 _("%s: Leap line in non leap seconds file %s\n"),
873 progname, name);
874 else inleap(fields, nfields);
875 wantcont = FALSE;
876 break;
877 default: /* "cannot happen" */
878 (void) fprintf(stderr,
879 _("%s: panic: Invalid l_value %d\n"),
880 progname, lp->l_value);
881 (void) exit(EXIT_FAILURE);
882 }
883 }
884 ifree((char *) fields);
885 }
886 if (ferror(fp)) {
887 (void) fprintf(stderr, _("%s: Error reading %s\n"),
888 progname, filename);
889 (void) exit(EXIT_FAILURE);
890 }
891 if (fp != stdin && fclose(fp)) {
892 const char *e = strerror(errno);
893
894 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
895 progname, filename, e);
896 (void) exit(EXIT_FAILURE);
897 }
898 if (wantcont)
899 error(_("expected continuation line not found"));
900 }
901
902 /*
903 ** Convert a string of one of the forms
904 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
905 ** into a number of seconds.
906 ** A null string maps to zero.
907 ** Call error with errstring and return zero on errors.
908 */
909
910 static long
911 gethms(string, errstring, signable)
912 const char * string;
913 const char * const errstring;
914 const int signable;
915 {
916 int hh, mm, ss, sign;
917
918 if (string == NULL || *string == '\0')
919 return 0;
920 if (!signable)
921 sign = 1;
922 else if (*string == '-') {
923 sign = -1;
924 ++string;
925 } else sign = 1;
926 if (sscanf(string, scheck(string, "%d"), &hh) == 1)
927 mm = ss = 0;
928 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
929 ss = 0;
930 else if (sscanf(string, scheck(string, "%d:%d:%d"),
931 &hh, &mm, &ss) != 3) {
932 error(errstring);
933 return 0;
934 }
935 if ((hh < 0 || hh >= HOURSPERDAY ||
936 mm < 0 || mm >= MINSPERHOUR ||
937 ss < 0 || ss > SECSPERMIN) &&
938 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) {
939 error(errstring);
940 return 0;
941 }
942 return eitol(sign) *
943 (eitol(hh * MINSPERHOUR + mm) *
944 eitol(SECSPERMIN) + eitol(ss));
945 }
946
947 static void
948 inrule(fields, nfields)
949 register char ** const fields;
950 const int nfields;
951 {
952 static struct rule r;
953
954 if (nfields != RULE_FIELDS) {
955 error(_("wrong number of fields on Rule line"));
956 return;
957 }
958 if (*fields[RF_NAME] == '\0') {
959 error(_("nameless rule"));
960 return;
961 }
962 r.r_filename = filename;
963 r.r_linenum = linenum;
964 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
965 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
966 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
967 r.r_name = ecpyalloc(fields[RF_NAME]);
968 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
969 rules = (struct rule *) (void *) erealloc((char *) rules,
970 (int) ((nrules + 1) * sizeof *rules));
971 rules[nrules++] = r;
972 }
973
974 static int
975 inzone(fields, nfields)
976 register char ** const fields;
977 const int nfields;
978 {
979 register int i;
980 static char * buf;
981
982 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
983 error(_("wrong number of fields on Zone line"));
984 return FALSE;
985 }
986 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
987 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
988 (void) sprintf(buf,
989 _("\"Zone %s\" line and -l option are mutually exclusive"),
990 TZDEFAULT);
991 error(buf);
992 return FALSE;
993 }
994 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
995 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
996 (void) sprintf(buf,
997 _("\"Zone %s\" line and -p option are mutually exclusive"),
998 TZDEFRULES);
999 error(buf);
1000 return FALSE;
1001 }
1002 for (i = 0; i < nzones; ++i)
1003 if (zones[i].z_name != NULL &&
1004 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
1005 buf = erealloc(buf, (int) (132 +
1006 strlen(fields[ZF_NAME]) +
1007 strlen(zones[i].z_filename)));
1008 (void) sprintf(buf,
1009 _("duplicate zone name %s (file \"%s\", line %d)"),
1010 fields[ZF_NAME],
1011 zones[i].z_filename,
1012 zones[i].z_linenum);
1013 error(buf);
1014 return FALSE;
1015 }
1016 return inzsub(fields, nfields, FALSE);
1017 }
1018
1019 static int
1020 inzcont(fields, nfields)
1021 register char ** const fields;
1022 const int nfields;
1023 {
1024 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
1025 error(_("wrong number of fields on Zone continuation line"));
1026 return FALSE;
1027 }
1028 return inzsub(fields, nfields, TRUE);
1029 }
1030
1031 static int
1032 inzsub(fields, nfields, iscont)
1033 register char ** const fields;
1034 const int nfields;
1035 const int iscont;
1036 {
1037 register char * cp;
1038 static struct zone z;
1039 register int i_gmtoff, i_rule, i_format;
1040 register int i_untilyear, i_untilmonth;
1041 register int i_untilday, i_untiltime;
1042 register int hasuntil;
1043
1044 if (iscont) {
1045 i_gmtoff = ZFC_GMTOFF;
1046 i_rule = ZFC_RULE;
1047 i_format = ZFC_FORMAT;
1048 i_untilyear = ZFC_TILYEAR;
1049 i_untilmonth = ZFC_TILMONTH;
1050 i_untilday = ZFC_TILDAY;
1051 i_untiltime = ZFC_TILTIME;
1052 z.z_name = NULL;
1053 } else {
1054 i_gmtoff = ZF_GMTOFF;
1055 i_rule = ZF_RULE;
1056 i_format = ZF_FORMAT;
1057 i_untilyear = ZF_TILYEAR;
1058 i_untilmonth = ZF_TILMONTH;
1059 i_untilday = ZF_TILDAY;
1060 i_untiltime = ZF_TILTIME;
1061 z.z_name = ecpyalloc(fields[ZF_NAME]);
1062 }
1063 z.z_filename = filename;
1064 z.z_linenum = linenum;
1065 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
1066 if ((cp = strchr(fields[i_format], '%')) != 0) {
1067 if (*++cp != 's' || strchr(cp, '%') != 0) {
1068 error(_("invalid abbreviation format"));
1069 return FALSE;
1070 }
1071 }
1072 z.z_rule = ecpyalloc(fields[i_rule]);
1073 z.z_format = ecpyalloc(fields[i_format]);
1074 hasuntil = nfields > i_untilyear;
1075 if (hasuntil) {
1076 z.z_untilrule.r_filename = filename;
1077 z.z_untilrule.r_linenum = linenum;
1078 rulesub(&z.z_untilrule,
1079 fields[i_untilyear],
1080 "only",
1081 "",
1082 (nfields > i_untilmonth) ?
1083 fields[i_untilmonth] : "Jan",
1084 (nfields > i_untilday) ? fields[i_untilday] : "1",
1085 (nfields > i_untiltime) ? fields[i_untiltime] : "0");
1086 z.z_untiltime = rpytime(&z.z_untilrule,
1087 z.z_untilrule.r_loyear);
1088 if (iscont && nzones > 0 &&
1089 z.z_untiltime > min_time &&
1090 z.z_untiltime < max_time &&
1091 zones[nzones - 1].z_untiltime > min_time &&
1092 zones[nzones - 1].z_untiltime < max_time &&
1093 zones[nzones - 1].z_untiltime >= z.z_untiltime) {
1094 error(_("Zone continuation line end time is not after end time of previous line"));
1095 return FALSE;
1096 }
1097 }
1098 zones = (struct zone *) (void *) erealloc((char *) zones,
1099 (int) ((nzones + 1) * sizeof *zones));
1100 zones[nzones++] = z;
1101 /*
1102 ** If there was an UNTIL field on this line,
1103 ** there's more information about the zone on the next line.
1104 */
1105 return hasuntil;
1106 }
1107
1108 static void
1109 inleap(fields, nfields)
1110 register char ** const fields;
1111 const int nfields;
1112 {
1113 register const char * cp;
1114 register const struct lookup * lp;
1115 register int i, j;
1116 int year, month, day;
1117 long dayoff, tod;
1118 time_t t;
1119
1120 if (nfields != LEAP_FIELDS) {
1121 error(_("wrong number of fields on Leap line"));
1122 return;
1123 }
1124 dayoff = 0;
1125 cp = fields[LP_YEAR];
1126 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
1127 /*
1128 * Leapin' Lizards!
1129 */
1130 error(_("invalid leaping year"));
1131 return;
1132 }
1133 j = EPOCH_YEAR;
1134 while (j != year) {
1135 if (year > j) {
1136 i = len_years[isleap(j)];
1137 ++j;
1138 } else {
1139 --j;
1140 i = -len_years[isleap(j)];
1141 }
1142 dayoff = oadd(dayoff, eitol(i));
1143 }
1144 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
1145 error(_("invalid month name"));
1146 return;
1147 }
1148 month = lp->l_value;
1149 j = TM_JANUARY;
1150 while (j != month) {
1151 i = len_months[isleap(year)][j];
1152 dayoff = oadd(dayoff, eitol(i));
1153 ++j;
1154 }
1155 cp = fields[LP_DAY];
1156 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
1157 day <= 0 || day > len_months[isleap(year)][month]) {
1158 error(_("invalid day of month"));
1159 return;
1160 }
1161 dayoff = oadd(dayoff, eitol(day - 1));
1162 if (dayoff < 0 && !TYPE_SIGNED(time_t)) {
1163 error(_("time before zero"));
1164 return;
1165 }
1166 t = (time_t) dayoff * SECSPERDAY;
1167 /*
1168 ** Cheap overflow check.
1169 */
1170 if (t / SECSPERDAY != dayoff) {
1171 error(_("time overflow"));
1172 return;
1173 }
1174 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
1175 cp = fields[LP_CORR];
1176 {
1177 register int positive;
1178 int count;
1179
1180 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
1181 positive = FALSE;
1182 count = 1;
1183 } else if (strcmp(cp, "--") == 0) {
1184 positive = FALSE;
1185 count = 2;
1186 } else if (strcmp(cp, "+") == 0) {
1187 positive = TRUE;
1188 count = 1;
1189 } else if (strcmp(cp, "++") == 0) {
1190 positive = TRUE;
1191 count = 2;
1192 } else {
1193 error(_("illegal CORRECTION field on Leap line"));
1194 return;
1195 }
1196 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
1197 error(_("illegal Rolling/Stationary field on Leap line"));
1198 return;
1199 }
1200 leapadd(tadd(t, tod), positive, lp->l_value, count);
1201 }
1202 }
1203
1204 static void
1205 inlink(fields, nfields)
1206 register char ** const fields;
1207 const int nfields;
1208 {
1209 struct link l;
1210
1211 if (nfields != LINK_FIELDS) {
1212 error(_("wrong number of fields on Link line"));
1213 return;
1214 }
1215 if (*fields[LF_FROM] == '\0') {
1216 error(_("blank FROM field on Link line"));
1217 return;
1218 }
1219 if (*fields[LF_TO] == '\0') {
1220 error(_("blank TO field on Link line"));
1221 return;
1222 }
1223 l.l_filename = filename;
1224 l.l_linenum = linenum;
1225 l.l_from = ecpyalloc(fields[LF_FROM]);
1226 l.l_to = ecpyalloc(fields[LF_TO]);
1227 links = (struct link *) (void *) erealloc((char *) links,
1228 (int) ((nlinks + 1) * sizeof *links));
1229 links[nlinks++] = l;
1230 }
1231
1232 static void
1233 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
1234 register struct rule * const rp;
1235 const char * const loyearp;
1236 const char * const hiyearp;
1237 const char * const typep;
1238 const char * const monthp;
1239 const char * const dayp;
1240 const char * const timep;
1241 {
1242 register const struct lookup * lp;
1243 register const char * cp;
1244 register char * dp;
1245 register char * ep;
1246
1247 if ((lp = byword(monthp, mon_names)) == NULL) {
1248 error(_("invalid month name"));
1249 return;
1250 }
1251 rp->r_month = lp->l_value;
1252 rp->r_todisstd = FALSE;
1253 rp->r_todisgmt = FALSE;
1254 dp = ecpyalloc(timep);
1255 if (*dp != '\0') {
1256 ep = dp + strlen(dp) - 1;
1257 switch (lowerit(*ep)) {
1258 case 's': /* Standard */
1259 rp->r_todisstd = TRUE;
1260 rp->r_todisgmt = FALSE;
1261 *ep = '\0';
1262 break;
1263 case 'w': /* Wall */
1264 rp->r_todisstd = FALSE;
1265 rp->r_todisgmt = FALSE;
1266 *ep = '\0';
1267 break;
1268 case 'g': /* Greenwich */
1269 case 'u': /* Universal */
1270 case 'z': /* Zulu */
1271 rp->r_todisstd = TRUE;
1272 rp->r_todisgmt = TRUE;
1273 *ep = '\0';
1274 break;
1275 }
1276 }
1277 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
1278 ifree(dp);
1279 /*
1280 ** Year work.
1281 */
1282 cp = loyearp;
1283 lp = byword(cp, begin_years);
1284 if (lp != NULL) switch ((int) lp->l_value) {
1285 case YR_MINIMUM:
1286 rp->r_loyear = INT_MIN;
1287 break;
1288 case YR_MAXIMUM:
1289 rp->r_loyear = INT_MAX;
1290 break;
1291 default: /* "cannot happen" */
1292 (void) fprintf(stderr,
1293 _("%s: panic: Invalid l_value %d\n"),
1294 progname, lp->l_value);
1295 (void) exit(EXIT_FAILURE);
1296 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
1297 error(_("invalid starting year"));
1298 return;
1299 } else if (noise) {
1300 if (rp->r_loyear < min_year_representable)
1301 warning(_("starting year too low to be represented"));
1302 else if (rp->r_loyear > max_year_representable)
1303 warning(_("starting year too high to be represented"));
1304 }
1305 cp = hiyearp;
1306 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
1307 case YR_MINIMUM:
1308 rp->r_hiyear = INT_MIN;
1309 break;
1310 case YR_MAXIMUM:
1311 rp->r_hiyear = INT_MAX;
1312 break;
1313 case YR_ONLY:
1314 rp->r_hiyear = rp->r_loyear;
1315 break;
1316 default: /* "cannot happen" */
1317 (void) fprintf(stderr,
1318 _("%s: panic: Invalid l_value %d\n"),
1319 progname, lp->l_value);
1320 (void) exit(EXIT_FAILURE);
1321 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
1322 error(_("invalid ending year"));
1323 return;
1324 } else if (noise) {
1325 if (rp->r_loyear < min_year_representable)
1326 warning(_("starting year too low to be represented"));
1327 else if (rp->r_loyear > max_year_representable)
1328 warning(_("starting year too high to be represented"));
1329 }
1330 if (rp->r_loyear > rp->r_hiyear) {
1331 error(_("starting year greater than ending year"));
1332 return;
1333 }
1334 if (*typep == '\0')
1335 rp->r_yrtype = NULL;
1336 else {
1337 if (rp->r_loyear == rp->r_hiyear) {
1338 error(_("typed single year"));
1339 return;
1340 }
1341 rp->r_yrtype = ecpyalloc(typep);
1342 }
1343 if (rp->r_loyear < min_year && rp->r_loyear > 0)
1344 min_year = rp->r_loyear;
1345 /*
1346 ** Day work.
1347 ** Accept things such as:
1348 ** 1
1349 ** last-Sunday
1350 ** Sun<=20
1351 ** Sun>=7
1352 */
1353 dp = ecpyalloc(dayp);
1354 if ((lp = byword(dp, lasts)) != NULL) {
1355 rp->r_dycode = DC_DOWLEQ;
1356 rp->r_wday = lp->l_value;
1357 rp->r_dayofmonth = len_months[1][rp->r_month];
1358 } else {
1359 if ((ep = strchr(dp, '<')) != 0)
1360 rp->r_dycode = DC_DOWLEQ;
1361 else if ((ep = strchr(dp, '>')) != 0)
1362 rp->r_dycode = DC_DOWGEQ;
1363 else {
1364 ep = dp;
1365 rp->r_dycode = DC_DOM;
1366 }
1367 if (rp->r_dycode != DC_DOM) {
1368 *ep++ = 0;
1369 if (*ep++ != '=') {
1370 error(_("invalid day of month"));
1371 ifree(dp);
1372 return;
1373 }
1374 if ((lp = byword(dp, wday_names)) == NULL) {
1375 error(_("invalid weekday name"));
1376 ifree(dp);
1377 return;
1378 }
1379 rp->r_wday = lp->l_value;
1380 }
1381 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
1382 rp->r_dayofmonth <= 0 ||
1383 (rp->r_dayofmonth > len_months[1][rp->r_month])) {
1384 error(_("invalid day of month"));
1385 ifree(dp);
1386 return;
1387 }
1388 }
1389 ifree(dp);
1390 }
1391
1392 static void
1393 convert(val, buf)
1394 const long val;
1395 char * const buf;
1396 {
1397 register int i;
1398 register long shift;
1399
1400 for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
1401 buf[i] = val >> shift;
1402 }
1403
1404 static void
1405 puttzcode(val, fp)
1406 const long val;
1407 FILE * const fp;
1408 {
1409 char buf[4];
1410
1411 convert(val, buf);
1412 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1413 }
1414
1415 static int
1416 atcomp(avp, bvp)
1417 void * avp;
1418 void * bvp;
1419 {
1420 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)
1421 return -1;
1422 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)
1423 return 1;
1424 else return 0;
1425 }
1426
1427 static void
1428 writezone(name)
1429 const char * const name;
1430 {
1431 register FILE * fp;
1432 register int i, j;
1433 static char * fullname;
1434 static struct tzhead tzh;
1435 time_t ats[TZ_MAX_TIMES];
1436 unsigned char types[TZ_MAX_TIMES];
1437
1438 /*
1439 ** Sort.
1440 */
1441 if (timecnt > 1)
1442 (void) qsort((void *) attypes, (size_t) timecnt,
1443 (size_t) sizeof *attypes, atcomp);
1444 /*
1445 ** Optimize.
1446 */
1447 {
1448 int fromi;
1449 int toi;
1450
1451 toi = 0;
1452 fromi = 0;
1453 while (fromi < timecnt && attypes[fromi].at < min_time)
1454 ++fromi;
1455 if (isdsts[0] == 0)
1456 while (fromi < timecnt && attypes[fromi].type == 0)
1457 ++fromi; /* handled by default rule */
1458 for ( ; fromi < timecnt; ++fromi) {
1459 if (toi != 0
1460 && ((attypes[fromi].at
1461 + gmtoffs[attypes[toi - 1].type])
1462 <= (attypes[toi - 1].at
1463 + gmtoffs[toi == 1 ? 0
1464 : attypes[toi - 2].type]))) {
1465 attypes[toi - 1].type = attypes[fromi].type;
1466 continue;
1467 }
1468 if (toi == 0 ||
1469 attypes[toi - 1].type != attypes[fromi].type)
1470 attypes[toi++] = attypes[fromi];
1471 }
1472 timecnt = toi;
1473 }
1474 /*
1475 ** Transfer.
1476 */
1477 for (i = 0; i < timecnt; ++i) {
1478 ats[i] = attypes[i].at;
1479 types[i] = attypes[i].type;
1480 }
1481 fullname = erealloc(fullname,
1482 (int) (strlen(directory) + 1 + strlen(name) + 1));
1483 (void) sprintf(fullname, "%s/%s", directory, name);
1484 /*
1485 ** Remove old file, if any, to snap links.
1486 */
1487 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
1488 const char *e = strerror(errno);
1489
1490 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
1491 progname, fullname, e);
1492 (void) exit(EXIT_FAILURE);
1493 }
1494 if ((fp = fopen(fullname, "wb")) == NULL) {
1495 if (mkdirs(fullname) != 0)
1496 (void) exit(EXIT_FAILURE);
1497 if ((fp = fopen(fullname, "wb")) == NULL) {
1498 const char *e = strerror(errno);
1499
1500 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
1501 progname, fullname, e);
1502 (void) exit(EXIT_FAILURE);
1503 }
1504 }
1505 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt);
1506 convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
1507 convert(eitol(leapcnt), tzh.tzh_leapcnt);
1508 convert(eitol(timecnt), tzh.tzh_timecnt);
1509 convert(eitol(typecnt), tzh.tzh_typecnt);
1510 convert(eitol(charcnt), tzh.tzh_charcnt);
1511 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
1512 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp)
1513 DO(tzh_magic);
1514 DO(tzh_reserved);
1515 DO(tzh_ttisgmtcnt);
1516 DO(tzh_ttisstdcnt);
1517 DO(tzh_leapcnt);
1518 DO(tzh_timecnt);
1519 DO(tzh_typecnt);
1520 DO(tzh_charcnt);
1521 #undef DO
1522 for (i = 0; i < timecnt; ++i) {
1523 j = leapcnt;
1524 while (--j >= 0)
1525 if (ats[i] >= trans[j]) {
1526 ats[i] = tadd(ats[i], corr[j]);
1527 break;
1528 }
1529 puttzcode((long) ats[i], fp);
1530 }
1531 if (timecnt > 0)
1532 (void) fwrite((void *) types, (size_t) sizeof types[0],
1533 (size_t) timecnt, fp);
1534 for (i = 0; i < typecnt; ++i) {
1535 puttzcode((long) gmtoffs[i], fp);
1536 (void) putc(isdsts[i], fp);
1537 (void) putc(abbrinds[i], fp);
1538 }
1539 if (charcnt != 0)
1540 (void) fwrite((void *) chars, (size_t) sizeof chars[0],
1541 (size_t) charcnt, fp);
1542 for (i = 0; i < leapcnt; ++i) {
1543 if (roll[i]) {
1544 if (timecnt == 0 || trans[i] < ats[0]) {
1545 j = 0;
1546 while (isdsts[j])
1547 if (++j >= typecnt) {
1548 j = 0;
1549 break;
1550 }
1551 } else {
1552 j = 1;
1553 while (j < timecnt && trans[i] >= ats[j])
1554 ++j;
1555 j = types[j - 1];
1556 }
1557 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
1558 } else puttzcode((long) trans[i], fp);
1559 puttzcode((long) corr[i], fp);
1560 }
1561 for (i = 0; i < typecnt; ++i)
1562 (void) putc(ttisstds[i], fp);
1563 for (i = 0; i < typecnt; ++i)
1564 (void) putc(ttisgmts[i], fp);
1565 if (ferror(fp) || fclose(fp)) {
1566 (void) fprintf(stderr, _("%s: Error writing %s\n"),
1567 progname, fullname);
1568 (void) exit(EXIT_FAILURE);
1569 }
1570 }
1571
1572 static void
1573 doabbr(abbr, format, letters, isdst)
1574 char * const abbr;
1575 const char * const format;
1576 const char * const letters;
1577 const int isdst;
1578 {
1579 if (strchr(format, '/') == NULL) {
1580 if (letters == NULL)
1581 (void) strcpy(abbr, format);
1582 else (void) sprintf(abbr, format, letters);
1583 } else if (isdst)
1584 (void) strcpy(abbr, strchr(format, '/') + 1);
1585 else {
1586 (void) strcpy(abbr, format);
1587 *strchr(abbr, '/') = '\0';
1588 }
1589 }
1590
1591 static void
1592 outzone(zpfirst, zonecount)
1593 const struct zone * const zpfirst;
1594 const int zonecount;
1595 {
1596 register const struct zone * zp;
1597 register struct rule * rp;
1598 register int i, j;
1599 register int usestart, useuntil;
1600 register time_t starttime, untiltime;
1601 register long gmtoff;
1602 register long stdoff;
1603 register int year;
1604 register long startoff;
1605 register int startttisstd;
1606 register int startttisgmt;
1607 register int type;
1608 char startbuf[BUFSIZ];
1609
1610 INITIALIZE(untiltime);
1611 INITIALIZE(starttime);
1612 /*
1613 ** Now. . .finally. . .generate some useful data!
1614 */
1615 timecnt = 0;
1616 typecnt = 0;
1617 charcnt = 0;
1618 /*
1619 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
1620 ** for noting the need to unconditionally initialize startttisstd.
1621 */
1622 startttisstd = FALSE;
1623 startttisgmt = FALSE;
1624 for (i = 0; i < zonecount; ++i) {
1625 /*
1626 ** A guess that may well be corrected later.
1627 */
1628 stdoff = 0;
1629 zp = &zpfirst[i];
1630 usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
1631 useuntil = i < (zonecount - 1);
1632 if (useuntil && zp->z_untiltime <= min_time)
1633 continue;
1634 gmtoff = zp->z_gmtoff;
1635 eat(zp->z_filename, zp->z_linenum);
1636 *startbuf = '\0';
1637 startoff = zp->z_gmtoff;
1638 if (zp->z_nrules == 0) {
1639 stdoff = zp->z_stdoff;
1640 doabbr(startbuf, zp->z_format,
1641 (char *) NULL, stdoff != 0);
1642 type = addtype(oadd(zp->z_gmtoff, stdoff),
1643 startbuf, stdoff != 0, startttisstd,
1644 startttisgmt);
1645 if (usestart) {
1646 addtt(starttime, type);
1647 usestart = FALSE;
1648 } else if (stdoff != 0)
1649 addtt(min_time, type);
1650 } else for (year = min_year; year <= max_year; ++year) {
1651 if (useuntil && year > zp->z_untilrule.r_hiyear)
1652 break;
1653 /*
1654 ** Mark which rules to do in the current year.
1655 ** For those to do, calculate rpytime(rp, year);
1656 */
1657 for (j = 0; j < zp->z_nrules; ++j) {
1658 rp = &zp->z_rules[j];
1659 eats(zp->z_filename, zp->z_linenum,
1660 rp->r_filename, rp->r_linenum);
1661 rp->r_todo = year >= rp->r_loyear &&
1662 year <= rp->r_hiyear &&
1663 yearistype(year, rp->r_yrtype);
1664 if (rp->r_todo)
1665 rp->r_temp = rpytime(rp, year);
1666 }
1667 for ( ; ; ) {
1668 register int k;
1669 register time_t jtime, ktime;
1670 register long offset;
1671 char buf[BUFSIZ];
1672
1673 INITIALIZE(ktime);
1674 if (useuntil) {
1675 /*
1676 ** Turn untiltime into UTC
1677 ** assuming the current gmtoff and
1678 ** stdoff values.
1679 */
1680 untiltime = zp->z_untiltime;
1681 if (!zp->z_untilrule.r_todisgmt)
1682 untiltime = tadd(untiltime,
1683 -gmtoff);
1684 if (!zp->z_untilrule.r_todisstd)
1685 untiltime = tadd(untiltime,
1686 -stdoff);
1687 }
1688 /*
1689 ** Find the rule (of those to do, if any)
1690 ** that takes effect earliest in the year.
1691 */
1692 k = -1;
1693 for (j = 0; j < zp->z_nrules; ++j) {
1694 rp = &zp->z_rules[j];
1695 if (!rp->r_todo)
1696 continue;
1697 eats(zp->z_filename, zp->z_linenum,
1698 rp->r_filename, rp->r_linenum);
1699 offset = rp->r_todisgmt ? 0 : gmtoff;
1700 if (!rp->r_todisstd)
1701 offset = oadd(offset, stdoff);
1702 jtime = rp->r_temp;
1703 if (jtime == min_time ||
1704 jtime == max_time)
1705 continue;
1706 jtime = tadd(jtime, -offset);
1707 if (k < 0 || jtime < ktime) {
1708 k = j;
1709 ktime = jtime;
1710 }
1711 }
1712 if (k < 0)
1713 break; /* go on to next year */
1714 rp = &zp->z_rules[k];
1715 rp->r_todo = FALSE;
1716 if (useuntil && ktime >= untiltime)
1717 break;
1718 stdoff = rp->r_stdoff;
1719 if (usestart && ktime == starttime)
1720 usestart = FALSE;
1721 if (usestart) {
1722 if (ktime < starttime) {
1723 startoff = oadd(zp->z_gmtoff,
1724 stdoff);
1725 doabbr(startbuf, zp->z_format,
1726 rp->r_abbrvar,
1727 rp->r_stdoff != 0);
1728 continue;
1729 }
1730 if (*startbuf == '\0' &&
1731 startoff == oadd(zp->z_gmtoff,
1732 stdoff)) {
1733 doabbr(startbuf, zp->z_format,
1734 rp->r_abbrvar,
1735 rp->r_stdoff != 0);
1736 }
1737 }
1738 eats(zp->z_filename, zp->z_linenum,
1739 rp->r_filename, rp->r_linenum);
1740 doabbr(buf, zp->z_format, rp->r_abbrvar,
1741 rp->r_stdoff != 0);
1742 offset = oadd(zp->z_gmtoff, rp->r_stdoff);
1743 type = addtype(offset, buf, rp->r_stdoff != 0,
1744 rp->r_todisstd, rp->r_todisgmt);
1745 addtt(ktime, type);
1746 }
1747 }
1748 if (usestart) {
1749 if (*startbuf == '\0' &&
1750 zp->z_format != NULL &&
1751 strchr(zp->z_format, '%') == NULL &&
1752 strchr(zp->z_format, '/') == NULL)
1753 (void) strcpy(startbuf, zp->z_format);
1754 eat(zp->z_filename, zp->z_linenum);
1755 if (*startbuf == '\0')
1756 error(_("can't determine time zone abbreviation to use just after until time"));
1757 else addtt(starttime,
1758 addtype(startoff, startbuf,
1759 startoff != zp->z_gmtoff,
1760 startttisstd,
1761 startttisgmt));
1762 }
1763 /*
1764 ** Now we may get to set starttime for the next zone line.
1765 */
1766 if (useuntil) {
1767 startttisstd = zp->z_untilrule.r_todisstd;
1768 startttisgmt = zp->z_untilrule.r_todisgmt;
1769 starttime = zp->z_untiltime;
1770 if (!startttisstd)
1771 starttime = tadd(starttime, -stdoff);
1772 if (!startttisgmt)
1773 starttime = tadd(starttime, -gmtoff);
1774 }
1775 }
1776 writezone(zpfirst->z_name);
1777 }
1778
1779 static void
1780 addtt(starttime, type)
1781 const time_t starttime;
1782 int type;
1783 {
1784 if (starttime <= min_time ||
1785 (timecnt == 1 && attypes[0].at < min_time)) {
1786 gmtoffs[0] = gmtoffs[type];
1787 isdsts[0] = isdsts[type];
1788 ttisstds[0] = ttisstds[type];
1789 ttisgmts[0] = ttisgmts[type];
1790 if (abbrinds[type] != 0)
1791 (void) strcpy(chars, &chars[abbrinds[type]]);
1792 abbrinds[0] = 0;
1793 charcnt = strlen(chars) + 1;
1794 typecnt = 1;
1795 timecnt = 0;
1796 type = 0;
1797 }
1798 if (timecnt >= TZ_MAX_TIMES) {
1799 error(_("too many transitions?!"));
1800 (void) exit(EXIT_FAILURE);
1801 }
1802 attypes[timecnt].at = starttime;
1803 attypes[timecnt].type = type;
1804 ++timecnt;
1805 }
1806
1807 static int
1808 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
1809 const long gmtoff;
1810 const char * const abbr;
1811 const int isdst;
1812 const int ttisstd;
1813 const int ttisgmt;
1814 {
1815 register int i, j;
1816
1817 if (isdst != TRUE && isdst != FALSE) {
1818 error(_("internal error - addtype called with bad isdst"));
1819 (void) exit(EXIT_FAILURE);
1820 }
1821 if (ttisstd != TRUE && ttisstd != FALSE) {
1822 error(_("internal error - addtype called with bad ttisstd"));
1823 (void) exit(EXIT_FAILURE);
1824 }
1825 if (ttisgmt != TRUE && ttisgmt != FALSE) {
1826 error(_("internal error - addtype called with bad ttisgmt"));
1827 (void) exit(EXIT_FAILURE);
1828 }
1829 /*
1830 ** See if there's already an entry for this zone type.
1831 ** If so, just return its index.
1832 */
1833 for (i = 0; i < typecnt; ++i) {
1834 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
1835 strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
1836 ttisstd == ttisstds[i] &&
1837 ttisgmt == ttisgmts[i])
1838 return i;
1839 }
1840 /*
1841 ** There isn't one; add a new one, unless there are already too
1842 ** many.
1843 */
1844 if (typecnt >= TZ_MAX_TYPES) {
1845 error(_("too many local time types"));
1846 (void) exit(EXIT_FAILURE);
1847 }
1848 gmtoffs[i] = gmtoff;
1849 isdsts[i] = isdst;
1850 ttisstds[i] = ttisstd;
1851 ttisgmts[i] = ttisgmt;
1852
1853 for (j = 0; j < charcnt; ++j)
1854 if (strcmp(&chars[j], abbr) == 0)
1855 break;
1856 if (j == charcnt)
1857 newabbr(abbr);
1858 abbrinds[i] = j;
1859 ++typecnt;
1860 return i;
1861 }
1862
1863 static void
1864 leapadd(t, positive, rolling, count)
1865 const time_t t;
1866 const int positive;
1867 const int rolling;
1868 int count;
1869 {
1870 register int i, j;
1871
1872 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
1873 error(_("too many leap seconds"));
1874 (void) exit(EXIT_FAILURE);
1875 }
1876 for (i = 0; i < leapcnt; ++i)
1877 if (t <= trans[i]) {
1878 if (t == trans[i]) {
1879 error(_("repeated leap second moment"));
1880 (void) exit(EXIT_FAILURE);
1881 }
1882 break;
1883 }
1884 do {
1885 for (j = leapcnt; j > i; --j) {
1886 trans[j] = trans[j - 1];
1887 corr[j] = corr[j - 1];
1888 roll[j] = roll[j - 1];
1889 }
1890 trans[i] = t;
1891 corr[i] = positive ? 1L : eitol(-count);
1892 roll[i] = rolling;
1893 ++leapcnt;
1894 } while (positive && --count != 0);
1895 }
1896
1897 static void
1898 adjleap P((void))
1899 {
1900 register int i;
1901 register long last = 0;
1902
1903 /*
1904 ** propagate leap seconds forward
1905 */
1906 for (i = 0; i < leapcnt; ++i) {
1907 trans[i] = tadd(trans[i], last);
1908 last = corr[i] += last;
1909 }
1910 }
1911
1912 static int
1913 yearistype(year, type)
1914 const int year;
1915 const char * const type;
1916 {
1917 static char * buf;
1918 int result;
1919
1920 if (type == NULL || *type == '\0')
1921 return TRUE;
1922 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
1923 (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
1924 result = system(buf);
1925 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
1926 case 0:
1927 return TRUE;
1928 case 1:
1929 return FALSE;
1930 }
1931 error(_("Wild result from command execution"));
1932 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
1933 progname, buf, result);
1934 for ( ; ; )
1935 (void) exit(EXIT_FAILURE);
1936 }
1937
1938 static int
1939 lowerit(a)
1940 int a;
1941 {
1942 a = (unsigned char) a;
1943 return (isascii(a) && isupper(a)) ? tolower(a) : a;
1944 }
1945
1946 static int
1947 ciequal(ap, bp) /* case-insensitive equality */
1948 register const char * ap;
1949 register const char * bp;
1950 {
1951 while (lowerit(*ap) == lowerit(*bp++))
1952 if (*ap++ == '\0')
1953 return TRUE;
1954 return FALSE;
1955 }
1956
1957 static int
1958 itsabbr(abbr, word)
1959 register const char * abbr;
1960 register const char * word;
1961 {
1962 if (lowerit(*abbr) != lowerit(*word))
1963 return FALSE;
1964 ++word;
1965 while (*++abbr != '\0')
1966 do {
1967 if (*word == '\0')
1968 return FALSE;
1969 } while (lowerit(*word++) != lowerit(*abbr));
1970 return TRUE;
1971 }
1972
1973 static const struct lookup *
1974 byword(word, table)
1975 register const char * const word;
1976 register const struct lookup * const table;
1977 {
1978 register const struct lookup * foundlp;
1979 register const struct lookup * lp;
1980
1981 if (word == NULL || table == NULL)
1982 return NULL;
1983 /*
1984 ** Look for exact match.
1985 */
1986 for (lp = table; lp->l_word != NULL; ++lp)
1987 if (ciequal(word, lp->l_word))
1988 return lp;
1989 /*
1990 ** Look for inexact match.
1991 */
1992 foundlp = NULL;
1993 for (lp = table; lp->l_word != NULL; ++lp)
1994 if (itsabbr(word, lp->l_word)) {
1995 if (foundlp == NULL)
1996 foundlp = lp;
1997 else return NULL; /* multiple inexact matches */
1998 }
1999 return foundlp;
2000 }
2001
2002 static char **
2003 getfields(cp)
2004 register char * cp;
2005 {
2006 register char * dp;
2007 register char ** array;
2008 register int nsubs;
2009
2010 if (cp == NULL)
2011 return NULL;
2012 array = (char **) (void *)
2013 emalloc((int) ((strlen(cp) + 1) * sizeof *array));
2014 nsubs = 0;
2015 for ( ; ; ) {
2016 while (isascii(*cp) && isspace((unsigned char) *cp))
2017 ++cp;
2018 if (*cp == '\0' || *cp == '#')
2019 break;
2020 array[nsubs++] = dp = cp;
2021 do {
2022 if ((*dp = *cp++) != '"')
2023 ++dp;
2024 else while ((*dp = *cp++) != '"')
2025 if (*dp != '\0')
2026 ++dp;
2027 else error(_("Odd number of quotation marks"));
2028 } while (*cp != '\0' && *cp != '#' &&
2029 (!isascii(*cp) || !isspace((unsigned char) *cp)));
2030 if (isascii(*cp) && isspace((unsigned char) *cp))
2031 ++cp;
2032 *dp = '\0';
2033 }
2034 array[nsubs] = NULL;
2035 return array;
2036 }
2037
2038 static long
2039 oadd(t1, t2)
2040 const long t1;
2041 const long t2;
2042 {
2043 register long t;
2044
2045 t = t1 + t2;
2046 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2047 error(_("time overflow"));
2048 (void) exit(EXIT_FAILURE);
2049 }
2050 return t;
2051 }
2052
2053 static time_t
2054 tadd(t1, t2)
2055 const time_t t1;
2056 const long t2;
2057 {
2058 register time_t t;
2059
2060 if (t1 == max_time && t2 > 0)
2061 return max_time;
2062 if (t1 == min_time && t2 < 0)
2063 return min_time;
2064 t = t1 + t2;
2065 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2066 error(_("time overflow"));
2067 (void) exit(EXIT_FAILURE);
2068 }
2069 return t;
2070 }
2071
2072 /*
2073 ** Given a rule, and a year, compute the date - in seconds since January 1,
2074 ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2075 */
2076
2077 static time_t
2078 rpytime(rp, wantedy)
2079 register const struct rule * const rp;
2080 register const int wantedy;
2081 {
2082 register int y, m, i;
2083 register long dayoff; /* with a nod to Margaret O. */
2084 register time_t t;
2085
2086 if (wantedy == INT_MIN)
2087 return min_time;
2088 if (wantedy == INT_MAX)
2089 return max_time;
2090 dayoff = 0;
2091 m = TM_JANUARY;
2092 y = EPOCH_YEAR;
2093 while (wantedy != y) {
2094 if (wantedy > y) {
2095 i = len_years[isleap(y)];
2096 ++y;
2097 } else {
2098 --y;
2099 i = -len_years[isleap(y)];
2100 }
2101 dayoff = oadd(dayoff, eitol(i));
2102 }
2103 while (m != rp->r_month) {
2104 i = len_months[isleap(y)][m];
2105 dayoff = oadd(dayoff, eitol(i));
2106 ++m;
2107 }
2108 i = rp->r_dayofmonth;
2109 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
2110 if (rp->r_dycode == DC_DOWLEQ)
2111 --i;
2112 else {
2113 error(_("use of 2/29 in non leap-year"));
2114 (void) exit(EXIT_FAILURE);
2115 }
2116 }
2117 --i;
2118 dayoff = oadd(dayoff, eitol(i));
2119 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
2120 register long wday;
2121
2122 #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2123 wday = eitol(EPOCH_WDAY);
2124 /*
2125 ** Don't trust mod of negative numbers.
2126 */
2127 if (dayoff >= 0)
2128 wday = (wday + dayoff) % LDAYSPERWEEK;
2129 else {
2130 wday -= ((-dayoff) % LDAYSPERWEEK);
2131 if (wday < 0)
2132 wday += LDAYSPERWEEK;
2133 }
2134 while (wday != eitol(rp->r_wday))
2135 if (rp->r_dycode == DC_DOWGEQ) {
2136 dayoff = oadd(dayoff, (long) 1);
2137 if (++wday >= LDAYSPERWEEK)
2138 wday = 0;
2139 ++i;
2140 } else {
2141 dayoff = oadd(dayoff, (long) -1);
2142 if (--wday < 0)
2143 wday = LDAYSPERWEEK - 1;
2144 --i;
2145 }
2146 if (i < 0 || i >= len_months[isleap(y)][m]) {
2147 error(_("no day in month matches rule"));
2148 (void) exit(EXIT_FAILURE);
2149 }
2150 }
2151 if (dayoff < 0 && !TYPE_SIGNED(time_t))
2152 return min_time;
2153 t = (time_t) dayoff * SECSPERDAY;
2154 /*
2155 ** Cheap overflow check.
2156 */
2157 if (t / SECSPERDAY != dayoff)
2158 return (dayoff > 0) ? max_time : min_time;
2159 return tadd(t, rp->r_tod);
2160 }
2161
2162 static void
2163 newabbr(string)
2164 const char * const string;
2165 {
2166 register int i;
2167
2168 i = strlen(string) + 1;
2169 if (charcnt + i > TZ_MAX_CHARS) {
2170 error(_("too many, or too long, time zone abbreviations"));
2171 (void) exit(EXIT_FAILURE);
2172 }
2173 (void) strcpy(&chars[charcnt], string);
2174 charcnt += eitol(i);
2175 }
2176
2177 static int
2178 mkdirs(argname)
2179 char * const argname;
2180 {
2181 register char * name;
2182 register char * cp;
2183
2184 if (argname == NULL || *argname == '\0')
2185 return 0;
2186 cp = name = ecpyalloc(argname);
2187 while ((cp = strchr(cp + 1, '/')) != 0) {
2188 *cp = '\0';
2189 #ifndef unix
2190 /*
2191 ** DOS drive specifier?
2192 */
2193 if (isalpha((unsigned char) name[0]) &&
2194 name[1] == ':' && name[2] == '\0') {
2195 *cp = '/';
2196 continue;
2197 }
2198 #endif /* !defined unix */
2199 if (!itsdir(name)) {
2200 /*
2201 ** It doesn't seem to exist, so we try to create it.
2202 ** Creation may fail because of the directory being
2203 ** created by some other multiprocessor, so we get
2204 ** to do extra checking.
2205 */
2206 if (mkdir(name, MKDIR_UMASK) != 0) {
2207 const char *e = strerror(errno);
2208
2209 if (errno != EEXIST || !itsdir(name)) {
2210 (void) fprintf(stderr,
2211 _("%s: Can't create directory %s: %s\n"),
2212 progname, name, e);
2213 ifree(name);
2214 return -1;
2215 }
2216 }
2217 }
2218 *cp = '/';
2219 }
2220 ifree(name);
2221 return 0;
2222 }
2223
2224 static long
2225 eitol(i)
2226 const int i;
2227 {
2228 long l;
2229
2230 l = i;
2231 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
2232 (void) fprintf(stderr,
2233 _("%s: %d did not sign extend correctly\n"),
2234 progname, i);
2235 (void) exit(EXIT_FAILURE);
2236 }
2237 return l;
2238 }
2239
2240 /*
2241 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
2242 */
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