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--- Libc/Libc-825.25/stdtime/FreeBSD/localtime.c
+++ /dev/null
@@ -1,2427 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
-*/
-
-#include <sys/cdefs.h>
-#ifndef lint
-#ifndef NOID
-static char elsieid[] __unused = "@(#)localtime.c 7.78";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-__FBSDID("$FreeBSD: src/lib/libc/stdtime/localtime.c,v 1.43 2008/04/01 06:56:11 davidxu Exp $");
-
-/*
-** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).
-** POSIX-style TZ environment variable handling from Guy Harris
-** (guy@auspex.com).
-*/
-
-/*LINTLIBRARY*/
-
-#include "namespace.h"
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <time.h>
-#include <fcntl.h>
-#include <pthread.h>
-#include <errno.h>
-#ifdef NOTIFY_TZ
-//#define NOTIFY_TZ_DEBUG
-//#define NOTIFY_TZ_DEBUG_FILE "/var/log/localtime.debug"
-//#define NOTIFY_TZ_LOG "/var/log/localtime.log"
-/* force ALL_STATE if NOTIFY_TZ is set */
-#ifndef ALL_STATE
-#define ALL_STATE
-#endif /* ALL_STATE */
-#include <mach/mach_init.h>
-#include <notify.h>
-#include <alloca.h>
-#endif /* NOTIFY_TZ */
-#include "private.h"
-#include "un-namespace.h"
-
-#include "tzfile.h"
-
-#include "libc_private.h"
-
-#define _MUTEX_LOCK(x) if (__isthreaded) _pthread_mutex_lock(x)
-#define _MUTEX_UNLOCK(x) if (__isthreaded) _pthread_mutex_unlock(x)
-
-#define _RWLOCK_RDLOCK(x) \
- do { \
- if (__isthreaded) _pthread_rwlock_rdlock(x); \
- } while (0)
-
-#define _RWLOCK_WRLOCK(x) \
- do { \
- if (__isthreaded) _pthread_rwlock_wrlock(x); \
- } while (0)
-
-#define _RWLOCK_UNLOCK(x) \
- do { \
- if (__isthreaded) _pthread_rwlock_unlock(x); \
- } while (0)
-
-/*
-** SunOS 4.1.1 headers lack O_BINARY.
-*/
-
-#ifdef O_BINARY
-#define OPEN_MODE (O_RDONLY | O_BINARY)
-#endif /* defined O_BINARY */
-#ifndef O_BINARY
-#define OPEN_MODE O_RDONLY
-#endif /* !defined O_BINARY */
-
-#ifndef WILDABBR
-/*
-** Someone might make incorrect use of a time zone abbreviation:
-** 1. They might reference tzname[0] before calling tzset (explicitly
-** or implicitly).
-** 2. They might reference tzname[1] before calling tzset (explicitly
-** or implicitly).
-** 3. They might reference tzname[1] after setting to a time zone
-** in which Daylight Saving Time is never observed.
-** 4. They might reference tzname[0] after setting to a time zone
-** in which Standard Time is never observed.
-** 5. They might reference tm.TM_ZONE after calling offtime.
-** What's best to do in the above cases is open to debate;
-** for now, we just set things up so that in any of the five cases
-** WILDABBR is used. Another possibility: initialize tzname[0] to the
-** string "tzname[0] used before set", and similarly for the other cases.
-** And another: initialize tzname[0] to "ERA", with an explanation in the
-** manual page of what this "time zone abbreviation" means (doing this so
-** that tzname[0] has the "normal" length of three characters).
-*/
-#define WILDABBR " "
-#endif /* !defined WILDABBR */
-
-static char wildabbr[] = "WILDABBR";
-
-/*
- * In June 2004 it was decided UTC was a more appropriate default time
- * zone than GMT.
- */
-
-static const char gmt[] = "UTC";
-
-/*
-** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
-** We default to US rules as of 1999-08-17.
-** POSIX 1003.1 section 8.1.1 says that the default DST rules are
-** implementation dependent; for historical reasons, US rules are a
-** common default.
-*/
-#ifndef TZDEFRULESTRING
-#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
-#endif /* !defined TZDEFDST */
-
-struct ttinfo { /* time type information */
- long tt_gmtoff; /* UTC offset in seconds */
- int tt_isdst; /* used to set tm_isdst */
- int tt_abbrind; /* abbreviation list index */
- int tt_ttisstd; /* TRUE if transition is std time */
- int tt_ttisgmt; /* TRUE if transition is UTC */
-};
-
-struct lsinfo { /* leap second information */
- time_t ls_trans; /* transition time */
- long ls_corr; /* correction to apply */
-};
-
-#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
-
-#ifdef TZNAME_MAX
-#define MY_TZNAME_MAX TZNAME_MAX
-#endif /* defined TZNAME_MAX */
-#ifndef TZNAME_MAX
-#define MY_TZNAME_MAX 255
-#endif /* !defined TZNAME_MAX */
-
-struct state {
- int leapcnt;
- int timecnt;
- int typecnt;
- int charcnt;
- time_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
- struct ttinfo ttis[TZ_MAX_TYPES];
- char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
- (2 * (MY_TZNAME_MAX + 1)))];
- struct lsinfo lsis[TZ_MAX_LEAPS];
-};
-
-struct rule {
- int r_type; /* type of rule--see below */
- int r_day; /* day number of rule */
- int r_week; /* week number of rule */
- int r_mon; /* month number of rule */
- long r_time; /* transition time of rule */
-};
-
-#define JULIAN_DAY 0 /* Jn - Julian day */
-#define DAY_OF_YEAR 1 /* n - day of year */
-#define MONTH_NTH_DAY_OF_WEEK 2 /* Mm.n.d - month, week, day of week */
-
-#ifdef NOTIFY_TZ
-typedef struct {
- int token;
- int notify_was_off;
- int is_set;
-} notify_tz_t;
-
-#define NOTIFY_TZ_NAME "com.apple.system.timezone"
-#endif /* NOTIFY_TZ */
-
-/*
-** Prototypes for static functions.
-*/
-#define localsub _st_localsub
-#define time1 _st_time1
-#define tzset_basic _st_tzset_basic
-__private_extern__
-#ifdef __LP64__
-struct tm * localsub(const time_t * timep, long offset,
- struct tm * tmp);
-#else /* !__LP64__ */
-void localsub(const time_t * timep, long offset,
- struct tm * tmp);
-#endif /* __LP64__ */
-__private_extern__
-time_t time1(struct tm * tmp,
-#ifdef __LP64__
- struct tm *(*funcp) (const time_t *,
- long, struct tm *),
-#else /* !__LP64__ */
- void(*funcp) (const time_t *,
- long, struct tm *),
-#endif /* __LP64__ */
- long offset,
- int unix03);
-__private_extern__
-void tzset_basic(int);
-
-#if !BUILDING_VARIANT
-static long detzcode(const char * codep);
-static const char * getzname(const char * strp, char **name, size_t *len);
-static const char * getnum(const char * strp, int * nump, int min,
- int max);
-static const char * getsecs(const char * strp, long * secsp);
-static const char * getoffset(const char * strp, long * offsetp);
-static const char * getrule(const char * strp, struct rule * rulep);
-static void gmtload(struct state * sp);
-#ifdef __LP64__
-static struct tm * gmtsub(const time_t * timep, long offset,
- struct tm * tmp);
-#else /* !__LP64__ */
-static void gmtsub(const time_t * timep, long offset,
- struct tm * tmp);
-#endif /* __LP64__ */
-static int increment_overflow(int * number, int delta);
-static int normalize_overflow(int * tensptr, int * unitsptr,
- int base);
-#ifdef NOTIFY_TZ
-static void notify_check_tz(notify_tz_t *p);
-static void notify_register_tz(char *file, notify_tz_t *p);
-#endif /* NOTIFY_TZ */
-static void settzname(void);
-static time_t time2(struct tm *tmp,
-#ifdef __LP64__
- struct tm *(*funcp) (const time_t *,
- long, struct tm*),
-#else /* !__LP64__ */
- void(*funcp) (const time_t *,
- long, struct tm*),
-#endif /* __LP64__ */
- long offset, int * okayp, int unix03);
-static time_t time2sub(struct tm *tmp,
-#ifdef __LP64__
- struct tm *(*funcp) (const time_t *,
- long, struct tm*),
-#else /* !__LP64__ */
- void(*funcp) (const time_t *,
- long, struct tm*),
-#endif /* __LP64__ */
- long offset, int * okayp, int do_norm_secs,
- int unix03);
-#ifdef __LP64__
-static struct tm * timesub(const time_t * timep, long offset,
- const struct state * sp, struct tm * tmp);
-#else /* !__LP64__ */
-static void timesub(const time_t * timep, long offset,
- const struct state * sp, struct tm * tmp);
-#endif /* __LP64__ */
-static int tmcomp(const struct tm * atmp,
- const struct tm * btmp);
-static time_t transtime(time_t janfirst, int year,
- const struct rule * rulep, long offset);
-static int tzload(const char * name, struct state * sp);
-static int tzparse(const char * name, struct state * sp,
- int lastditch);
-
-#ifdef ALL_STATE
-static struct state * lclptr;
-static struct state * gmtptr;
-#endif /* defined ALL_STATE */
-
-#ifndef ALL_STATE
-static struct state lclmem;
-static struct state gmtmem;
-#define lclptr (&lclmem)
-#define gmtptr (&gmtmem)
-#endif /* State Farm */
-
-#ifndef TZ_STRLEN_MAX
-#define TZ_STRLEN_MAX 255
-#endif /* !defined TZ_STRLEN_MAX */
-
-static char lcl_TZname[TZ_STRLEN_MAX + 1];
-#ifdef NOTIFY_TZ
-#define lcl_is_set (lcl_notify.is_set)
-#define gmt_is_set (gmt_notify.is_set)
-#else /* ! NOTIFY_TZ */
-static int lcl_is_set;
-static int gmt_is_set;
-#endif /* NOTIFY_TZ */
-__private_extern__ pthread_rwlock_t lcl_rwlock = PTHREAD_RWLOCK_INITIALIZER;
-static pthread_mutex_t gmt_mutex = PTHREAD_MUTEX_INITIALIZER;
-
-char * tzname[2] = {
- wildabbr,
- wildabbr
-};
-
-/*
-** Section 4.12.3 of X3.159-1989 requires that
-** Except for the strftime function, these functions [asctime,
-** ctime, gmtime, localtime] return values in one of two static
-** objects: a broken-down time structure and an array of char.
-** Thanks to Paul Eggert (eggert@twinsun.com) for noting this.
-*/
-
-static struct tm tm;
-
-#define USG_COMPAT
-#define ALTZONE
-#ifdef USG_COMPAT
-int daylight = 0;
-__private_extern__ void _st_set_timezone(long);
-#endif /* defined USG_COMPAT */
-
-#ifdef ALTZONE
-__private_extern__ long __darwin_altzone = 0;
-#define altzone __darwin_altzone
-#endif /* defined ALTZONE */
-
-#ifdef NOTIFY_TZ
-#ifdef NOTIFY_TZ_DEBUG
-#ifdef NOTIFY_TZ_DEBUG_FILE
-#define NOTIFY_TZ_PRINTF(fmt, args...) \
-{ \
- FILE *_notify_tz_fp_; \
- if((_notify_tz_fp_ = fopen(NOTIFY_TZ_DEBUG_FILE, "a")) != NULL) { \
- fprintf(_notify_tz_fp_, "%d: " fmt, getpid(), ## args); \
- fclose(_notify_tz_fp_); \
- } \
-}
-#else /* ! NOTIFY_TZ_DEBUG_FILE */
-#define NOTIFY_TZ_PRINTF(args...) fprintf(stdout, ## args)
-#endif /* NOTIFY_TZ_DEBUG_FILE */
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ_LOG
-#define NOTIFY_LOG(fmt, args...) \
-{ \
- FILE *_notify_log_fp_; \
- if((_notify_log_fp_ = fopen(NOTIFY_TZ_LOG, "a")) != NULL) { \
- fprintf(_notify_log_fp_, "%d: " fmt, getpid(), ## args); \
- fclose(_notify_log_fp_); \
- } \
-}
-#endif /* NOTIFY_TZ_LOG */
-/*--------------------------------------------------------------------
- * __notify_78945668_info__ is a global variable (defined in Libnotify)
- * that can be used to disable the notify mechanism. Set to a negative
- * value to disable. It can then be set back to zero to re-enable.
- *-------------------------------------------------------------------- */
-extern int __notify_78945668_info__;
-
-/*--------------------------------------------------------------------
- * fullname is used to pass the actual path of the timezone file to the
- * notify routines. If it is a nil string, that means no timezone file
- * is being used.
- *-------------------------------------------------------------------- */
-static char * fullname = NULL;
-
-static notify_tz_t gmt_notify = {-1, 0, 0};
-static notify_tz_t lcl_notify = {-1, 0, 0};
-static char notify_tz_name[] = NOTIFY_TZ_NAME;
-#endif /* NOTIFY_TZ */
-
-static long
-detzcode(codep)
-const char * const codep;
-{
- long result;
- int i;
-
- result = (codep[0] & 0x80) ? ~0L : 0L;
- for (i = 0; i < 4; ++i)
- result = (result << 8) | (codep[i] & 0xff);
- return result;
-}
-
-static void
-settzname(void)
-{
- struct state * sp = lclptr;
- int i, need;
- unsigned char * types;
-#define NEED_STD 1
-#define NEED_DST 2
-#define NEED_DAYLIGHT 4
-#define NEED_ALL (NEED_STD | NEED_DST | NEED_DAYLIGHT)
-
- tzname[0] = wildabbr;
- tzname[1] = wildabbr;
-#ifdef USG_COMPAT
- daylight = 0;
- _st_set_timezone(0);
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- altzone = 0;
-#endif /* defined ALTZONE */
-#ifdef ALL_STATE
- if (sp == NULL) {
- tzname[0] = tzname[1] = (char *)gmt;
- return;
- }
-#endif /* defined ALL_STATE */
- /*
- * PR-3765457: The original settzname went sequentially through the ttis
- * array, rather than correctly indexing via the types array, to get
- * the real order of the timezone changes. In addition, as a speed up,
- * we start at the end of the changes, and work back, so that most of
- * the time, we don't have to look through the entire array.
- */
- if (sp->timecnt == 0 && sp->typecnt == 1) {
- /*
- * Unfortunately, there is an edge case when typecnt == 1 and
- * timecnt == 0, which would cause the loop to never run. So
- * in that case, we fudge things up so that it is as if
- * timecnt == 1.
- */
- i = 0;
- types = (unsigned char *)""; /* we use the null as index */
- } else {
- /* the usual case */
- i = sp->timecnt - 1;
- types = sp->types;
- }
- need = NEED_ALL;
- for (; i >= 0 && need; --i) {
- const struct ttinfo * const ttisp = &sp->ttis[types[i]];
-
-#ifdef USG_COMPAT
- if ((need & NEED_DAYLIGHT) && ttisp->tt_isdst) {
- need &= ~NEED_DAYLIGHT;
- daylight = 1;
- }
-#endif /* defined USG_COMPAT */
- if (ttisp->tt_isdst) {
- if (need & NEED_DST) {
- need &= ~NEED_DST;
- tzname[1] = &sp->chars[ttisp->tt_abbrind];
-#ifdef ALTZONE
- altzone = -(ttisp->tt_gmtoff);
-#endif /* defined ALTZONE */
- }
- } else if (need & NEED_STD) {
- need &= ~NEED_STD;
- tzname[0] = &sp->chars[ttisp->tt_abbrind];
-#ifdef USG_COMPAT
- _st_set_timezone(-(ttisp->tt_gmtoff));
-#endif /* defined USG_COMPAT */
- }
-#if defined(ALTZONE) || defined(USG_COMPAT)
- if (i == 0) {
-#endif /* defined(ALTZONE) || defined(USG_COMPAT) */
-#ifdef ALTZONE
- if (need & NEED_DST)
- altzone = -(ttisp->tt_gmtoff);
-#endif /* defined ALTZONE */
-#ifdef USG_COMPAT
- if (need & NEED_STD)
- _st_set_timezone(-(ttisp->tt_gmtoff));
-#endif /* defined USG_COMPAT */
-#if defined(ALTZONE) || defined(USG_COMPAT)
- }
-#endif /* defined(ALTZONE) || defined(USG_COMPAT) */
- }
-}
-
-#ifdef NOTIFY_TZ
-static void
-notify_check_tz(notify_tz_t *p)
-{
- unsigned int nstat;
- int ncheck;
-
- if (__notify_78945668_info__ < 0) {
-#ifdef NOTIFY_TZ_DEBUG
- if(!p->notify_was_off) NOTIFY_TZ_PRINTF("notify_check_tz: setting %s_notify->notify_was_off\n", (p == &lcl_notify ? "lcl" : "gmt"));
-#endif /* NOTIFY_TZ_DEBUG */
- p->notify_was_off = 1;
- return;
- }
- /* force rereading the timezone file if notify was off */
- if (p->notify_was_off) {
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_check_tz: saw %s_notify->notify_was_off\n", (p == &lcl_notify ? "lcl" : "gmt"));
-#endif /* NOTIFY_TZ_DEBUG */
- p->is_set = 0;
- p->notify_was_off = 0;
- return;
- }
- if (p->token < 0)
- return;
- nstat = notify_check(p->token, &ncheck);
- if (nstat || ncheck) {
- p->is_set = 0;
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_check_tz: %s changed\n", (p == &lcl_notify) ? "lcl" : "gmt");
-#endif /* NOTIFY_TZ_DEBUG */
- }
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_check_tz: %s unchanged\n", (p == &lcl_notify) ? "lcl" : "gmt");
-#endif /* NOTIFY_TZ_DEBUG */
-}
-
-extern uint32_t notify_monitor_file(int token, char *path, int flags);
-
-static void
-notify_register_tz(char *file, notify_tz_t *p)
-{
- char *name;
- unsigned int nstat;
- int ncheck;
-
- if (__notify_78945668_info__ < 0)
- return;
- /*----------------------------------------------------------------
- * Since we don't record the last time zone filename, just cancel
- * (which should remove the file monitor) and setup from scratch
- *----------------------------------------------------------------*/
- if (p->token >= 0)
- notify_cancel(p->token);
- if (!file || *file == 0) {
- /* no time zone file to monitor */
- p->token = -1;
- return;
- }
- /*----------------------------------------------------------------
- * Just use com.apple.system.timezone if the path is /etc/localtime.
- * Otherwise use com.apple.system.timezone.<fullpath>
- *----------------------------------------------------------------*/
- if (TZDEFAULT && strcmp(file, TZDEFAULT) == 0)
- name = notify_tz_name;
- else {
- name = alloca(sizeof(notify_tz_name) + strlen(file) + 1);
- if (name == NULL) {
- p->token = -1;
- return;
- }
- strcpy(name, notify_tz_name);
- strcat(name, ".");
- strcat(name, file);
- }
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_register_tz: file=%s name=%s\n", file, name);
-#endif /* NOTIFY_TZ_DEBUG */
- nstat = notify_register_check(name, &p->token);
- if (nstat != 0) {
- p->token = -1;
- p->is_set = 0;
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("***notify_register_tz: notify_register_check failed: %u\n", nstat);
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ_LOG
- NOTIFY_LOG("notify_register_check(%s) failed: %u\n", name, nstat);
-#endif /* NOTIFY_TZ_LOG */
- return;
- }
- /* don't need to request monitoring /etc/localtime */
- if (name != notify_tz_name) {
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("notify_register_tz: monitor %s\n", file);
-#endif /* NOTIFY_TZ_DEBUG */
- nstat = notify_monitor_file(p->token, file, 0);
- if (nstat != 0) {
- notify_cancel(p->token);
- p->token = -1;
- p->is_set = 0;
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("***notify_register_tz: notify_monitor_file failed: %u\n", nstat);
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ_LOG
- NOTIFY_LOG("notify_monitor_file(%s) failed: %u\n", file, nstat);
-#endif /* NOTIFY_TZ_LOG */
- return;
- }
- }
- notify_check(p->token, &ncheck); /* this always returns true */
-}
-#endif /* NOTIFY_TZ */
-
-static int
-tzload(name, sp)
-const char * name;
-struct state * const sp;
-{
- const char * p;
- int i;
- int fid;
-
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzload: name=%s\n", name);
-#endif /* NOTIFY_TZ_DEBUG */
- /* XXX The following is from OpenBSD, and I'm not sure it is correct */
- if (name != NULL && issetugid() != 0)
- if ((name[0] == ':' && name[1] == '/') ||
- name[0] == '/' || strchr(name, '.'))
- name = NULL;
- if (name == NULL && (name = TZDEFAULT) == NULL)
- return -1;
- {
- int doaccess;
- struct stat stab;
- /*
- ** Section 4.9.1 of the C standard says that
- ** "FILENAME_MAX expands to an integral constant expression
- ** that is the size needed for an array of char large enough
- ** to hold the longest file name string that the implementation
- ** guarantees can be opened."
- */
-#ifdef NOTIFY_TZ
- if (!fullname) {
- fullname = malloc(FILENAME_MAX + 1);
- if (!fullname)
- return -1;
- }
-#else /* ! NOTIFY_TZ */
- char fullname[FILENAME_MAX + 1];
-#endif /* NOTIFY_TZ */
-
- if (name[0] == ':')
- ++name;
- doaccess = name[0] == '/';
- if (!doaccess) {
- if ((p = TZDIR) == NULL)
- return -1;
-#ifdef NOTIFY_TZ
- if ((strlen(p) + 1 + strlen(name) + 1) >= (FILENAME_MAX + 1))
-#else /* ! NOTIFY_TZ */
- if ((strlen(p) + 1 + strlen(name) + 1) >= sizeof fullname)
-#endif /* NOTIFY_TZ */
- return -1;
- (void) strcpy(fullname, p);
- (void) strcat(fullname, "/");
- (void) strcat(fullname, name);
- /*
- ** Set doaccess if '.' (as in "../") shows up in name.
- */
- if (strchr(name, '.') != NULL)
- doaccess = TRUE;
- name = fullname;
- }
-#ifdef NOTIFY_TZ
- else
- strcpy(fullname, name);
-#endif /* NOTIFY_TZ */
- if (doaccess && access(name, R_OK) != 0)
- return -1;
- if ((fid = _open(name, OPEN_MODE)) == -1)
- return -1;
- if ((_fstat(fid, &stab) < 0) || !S_ISREG(stab.st_mode)) {
- _close(fid);
- return -1;
- }
- }
- {
- struct tzhead * tzhp;
- union {
- struct tzhead tzhead;
- char buf[sizeof *sp + sizeof *tzhp];
- } u;
- int ttisstdcnt;
- int ttisgmtcnt;
-
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzload: reading %s\n", name);
-#endif /* NOTIFY_TZ_DEBUG */
- i = _read(fid, u.buf, sizeof u.buf);
- if (_close(fid) != 0)
- return -1;
- ttisstdcnt = (int) detzcode(u.tzhead.tzh_ttisstdcnt);
- ttisgmtcnt = (int) detzcode(u.tzhead.tzh_ttisgmtcnt);
- sp->leapcnt = (int) detzcode(u.tzhead.tzh_leapcnt);
- sp->timecnt = (int) detzcode(u.tzhead.tzh_timecnt);
- sp->typecnt = (int) detzcode(u.tzhead.tzh_typecnt);
- sp->charcnt = (int) detzcode(u.tzhead.tzh_charcnt);
- p = u.tzhead.tzh_charcnt + sizeof u.tzhead.tzh_charcnt;
- if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
- sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
- sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
- sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||
- (ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
- (ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
- return -1;
- if (i - (p - u.buf) < sp->timecnt * 4 + /* ats */
- sp->timecnt + /* types */
- sp->typecnt * (4 + 2) + /* ttinfos */
- sp->charcnt + /* chars */
- sp->leapcnt * (4 + 4) + /* lsinfos */
- ttisstdcnt + /* ttisstds */
- ttisgmtcnt) /* ttisgmts */
- return -1;
- for (i = 0; i < sp->timecnt; ++i) {
- sp->ats[i] = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->timecnt; ++i) {
- sp->types[i] = (unsigned char) *p++;
- if (sp->types[i] >= sp->typecnt)
- return -1;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- ttisp->tt_gmtoff = detzcode(p);
- p += 4;
- ttisp->tt_isdst = (unsigned char) *p++;
- if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)
- return -1;
- ttisp->tt_abbrind = (unsigned char) *p++;
- if (ttisp->tt_abbrind < 0 ||
- ttisp->tt_abbrind > sp->charcnt)
- return -1;
- }
- for (i = 0; i < sp->charcnt; ++i)
- sp->chars[i] = *p++;
- sp->chars[i] = '\0'; /* ensure '\0' at end */
- for (i = 0; i < sp->leapcnt; ++i) {
- struct lsinfo * lsisp;
-
- lsisp = &sp->lsis[i];
- lsisp->ls_trans = detzcode(p);
- p += 4;
- lsisp->ls_corr = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisstdcnt == 0)
- ttisp->tt_ttisstd = FALSE;
- else {
- ttisp->tt_ttisstd = *p++;
- if (ttisp->tt_ttisstd != TRUE &&
- ttisp->tt_ttisstd != FALSE)
- return -1;
- }
- }
- for (i = 0; i < sp->typecnt; ++i) {
- struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisgmtcnt == 0)
- ttisp->tt_ttisgmt = FALSE;
- else {
- ttisp->tt_ttisgmt = *p++;
- if (ttisp->tt_ttisgmt != TRUE &&
- ttisp->tt_ttisgmt != FALSE)
- return -1;
- }
- }
- }
- return 0;
-}
-
-static const int mon_lengths[2][MONSPERYEAR] = {
- { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
- { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-};
-
-static const int year_lengths[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
-};
-
-/*
-** Given a pointer into a time zone string, scan until a character that is not
-** a valid character in a zone name is found. Return a pointer to that
-** character.
-*/
-
-static const char *
-getzname(strp, name, len)
-const char * strp;
-char ** name;
-size_t * len;
-{
- char c;
- char * ket;
-
- if (*strp == '<' && (ket = strchr(strp, '>')) != NULL) {
- *name = (char *)(strp + 1);
- *len = ket - strp - 1;
- return ket + 1;
- }
- *name = (char *)strp;
- while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
- c != '+')
- ++strp;
- *len = strp - *name;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number from that string.
-** Check that the number is within a specified range; if it is not, return
-** NULL.
-** Otherwise, return a pointer to the first character not part of the number.
-*/
-
-static const char *
-getnum(strp, nump, min, max)
-const char * strp;
-int * const nump;
-const int min;
-const int max;
-{
- char c;
- int num;
-
- if (strp == NULL || !is_digit(c = *strp))
- return NULL;
- num = 0;
- do {
- num = num * 10 + (c - '0');
- if (num > max)
- return NULL; /* illegal value */
- c = *++strp;
- } while (is_digit(c));
- if (num < min)
- return NULL; /* illegal value */
- *nump = num;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number of seconds,
-** in hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the number
-** of seconds.
-*/
-
-static const char *
-getsecs(strp, secsp)
-const char * strp;
-long * const secsp;
-{
- int num;
-
- /*
- ** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
- ** "M10.4.6/26", which does not conform to Posix,
- ** but which specifies the equivalent of
- ** ``02:00 on the first Sunday on or after 23 Oct''.
- */
- strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
- if (strp == NULL)
- return NULL;
- *secsp = num * (long) SECSPERHOUR;
- if (*strp == ':') {
- ++strp;
- strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
- if (strp == NULL)
- return NULL;
- *secsp += num * SECSPERMIN;
- if (*strp == ':') {
- ++strp;
- /* `SECSPERMIN' allows for leap seconds. */
- strp = getnum(strp, &num, 0, SECSPERMIN);
- if (strp == NULL)
- return NULL;
- *secsp += num;
- }
- }
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract an offset, in
-** [+-]hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the time.
-*/
-
-static const char *
-getoffset(strp, offsetp)
-const char * strp;
-long * const offsetp;
-{
- int neg = 0;
-
- if (*strp == '-') {
- neg = 1;
- ++strp;
- } else if (*strp == '+')
- ++strp;
- strp = getsecs(strp, offsetp);
- if (strp == NULL)
- return NULL; /* illegal time */
- if (neg)
- *offsetp = -*offsetp;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a rule in the form
-** date[/time]. See POSIX section 8 for the format of "date" and "time".
-** If a valid rule is not found, return NULL.
-** Otherwise, return a pointer to the first character not part of the rule.
-*/
-
-static const char *
-getrule(strp, rulep)
-const char * strp;
-struct rule * const rulep;
-{
- if (*strp == 'J') {
- /*
- ** Julian day.
- */
- rulep->r_type = JULIAN_DAY;
- ++strp;
- strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
- } else if (*strp == 'M') {
- /*
- ** Month, week, day.
- */
- rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
- ++strp;
- strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_week, 1, 5);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
- } else if (is_digit(*strp)) {
- /*
- ** Day of year.
- */
- rulep->r_type = DAY_OF_YEAR;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
- } else return NULL; /* invalid format */
- if (strp == NULL)
- return NULL;
- if (*strp == '/') {
- /*
- ** Time specified.
- */
- ++strp;
- strp = getsecs(strp, &rulep->r_time);
- } else rulep->r_time = 2 * SECSPERHOUR; /* default = 2:00:00 */
- return strp;
-}
-
-/*
-** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the
-** year, a rule, and the offset from UTC at the time that rule takes effect,
-** calculate the Epoch-relative time that rule takes effect.
-*/
-
-static time_t
-transtime(janfirst, year, rulep, offset)
-const time_t janfirst;
-const int year;
-const struct rule * const rulep;
-const long offset;
-{
- int leapyear;
- time_t value;
- int i;
- int d, m1, yy0, yy1, yy2, dow;
-
- INITIALIZE(value);
- leapyear = isleap(year);
- switch (rulep->r_type) {
-
- case JULIAN_DAY:
- /*
- ** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
- ** years.
- ** In non-leap years, or if the day number is 59 or less, just
- ** add SECSPERDAY times the day number-1 to the time of
- ** January 1, midnight, to get the day.
- */
- value = janfirst + (rulep->r_day - 1) * SECSPERDAY;
- if (leapyear && rulep->r_day >= 60)
- value += SECSPERDAY;
- break;
-
- case DAY_OF_YEAR:
- /*
- ** n - day of year.
- ** Just add SECSPERDAY times the day number to the time of
- ** January 1, midnight, to get the day.
- */
- value = janfirst + rulep->r_day * SECSPERDAY;
- break;
-
- case MONTH_NTH_DAY_OF_WEEK:
- /*
- ** Mm.n.d - nth "dth day" of month m.
- */
- value = janfirst;
- for (i = 0; i < rulep->r_mon - 1; ++i)
- value += mon_lengths[leapyear][i] * SECSPERDAY;
-
- /*
- ** Use Zeller's Congruence to get day-of-week of first day of
- ** month.
- */
- m1 = (rulep->r_mon + 9) % 12 + 1;
- yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
- yy1 = yy0 / 100;
- yy2 = yy0 % 100;
- dow = ((26 * m1 - 2) / 10 +
- 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
- if (dow < 0)
- dow += DAYSPERWEEK;
-
- /*
- ** "dow" is the day-of-week of the first day of the month. Get
- ** the day-of-month (zero-origin) of the first "dow" day of the
- ** month.
- */
- d = rulep->r_day - dow;
- if (d < 0)
- d += DAYSPERWEEK;
- for (i = 1; i < rulep->r_week; ++i) {
- if (d + DAYSPERWEEK >=
- mon_lengths[leapyear][rulep->r_mon - 1])
- break;
- d += DAYSPERWEEK;
- }
-
- /*
- ** "d" is the day-of-month (zero-origin) of the day we want.
- */
- value += d * SECSPERDAY;
- break;
- }
-
- /*
- ** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
- ** question. To get the Epoch-relative time of the specified local
- ** time on that day, add the transition time and the current offset
- ** from UTC.
- */
- return value + rulep->r_time + offset;
-}
-
-/*
-** Given a POSIX section 8-style TZ string, fill in the rule tables as
-** appropriate.
-*/
-
-static int
-tzparse(name, sp, lastditch)
-const char * name;
-struct state * const sp;
-const int lastditch;
-{
- const char * stdname;
- const char * dstname;
- size_t stdlen;
- size_t dstlen;
- long stdoffset;
- long dstoffset;
- time_t * atp;
- unsigned char * typep;
- char * cp;
- int load_result;
-
- INITIALIZE(dstname);
- if (lastditch) {
- stdname = name;
- stdlen = strlen(name); /* length of standard zone name */
- name += stdlen;
- if (stdlen >= sizeof sp->chars)
- stdlen = (sizeof sp->chars) - 1;
- stdoffset = 0;
- } else {
- name = getzname(name, (char **)&stdname, &stdlen);
- if (stdlen < 3)
- return -1;
- if (*name == '\0')
- return -1; /* was "stdoffset = 0;" */
- else {
- name = getoffset(name, &stdoffset);
- if (name == NULL)
- return -1;
- }
- }
- load_result = tzload(TZDEFRULES, sp);
-#ifdef NOTIFY_TZ
- *fullname = 0; /* mark fullname as invalid */
-#endif /* NOTIFY_TZ */
- if (load_result != 0)
- sp->leapcnt = 0; /* so, we're off a little */
- if (*name != '\0') {
- dstname = name;
- name = getzname(name, (char **)&dstname, &dstlen);
- if (dstlen < 3)
- return -1;
- if (*name != '\0' && *name != ',' && *name != ';') {
- name = getoffset(name, &dstoffset);
- if (name == NULL)
- return -1;
- } else dstoffset = stdoffset - SECSPERHOUR;
- if (*name == '\0' && load_result != 0)
- name = TZDEFRULESTRING;
- if (*name == ',' || *name == ';') {
- struct rule start;
- struct rule end;
- int year;
- time_t janfirst;
- time_t starttime;
- time_t endtime;
-
- ++name;
- if ((name = getrule(name, &start)) == NULL)
- return -1;
- if (*name++ != ',')
- return -1;
- if ((name = getrule(name, &end)) == NULL)
- return -1;
- if (*name != '\0')
- return -1;
- sp->typecnt = 2; /* standard time and DST */
- /*
- ** Two transitions per year, from EPOCH_YEAR to 2037.
- */
- sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1);
- if (sp->timecnt > TZ_MAX_TIMES)
- return -1;
- sp->ttis[0].tt_gmtoff = -dstoffset;
- sp->ttis[0].tt_isdst = 1;
- sp->ttis[0].tt_abbrind = stdlen + 1;
- sp->ttis[1].tt_gmtoff = -stdoffset;
- sp->ttis[1].tt_isdst = 0;
- sp->ttis[1].tt_abbrind = 0;
- atp = sp->ats;
- typep = sp->types;
- janfirst = 0;
- for (year = EPOCH_YEAR; year <= 2037; ++year) {
- starttime = transtime(janfirst, year, &start,
- stdoffset);
- endtime = transtime(janfirst, year, &end,
- dstoffset);
- if (starttime > endtime) {
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- } else {
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- }
- janfirst += year_lengths[isleap(year)] *
- SECSPERDAY;
- }
- } else {
- long theirstdoffset;
- long theirdstoffset;
- long theiroffset;
- int isdst;
- int i;
- int j;
-
- if (*name != '\0')
- return -1;
- /*
- ** Initial values of theirstdoffset and theirdstoffset.
- */
- theirstdoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (!sp->ttis[j].tt_isdst) {
- theirstdoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- theirdstoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (sp->ttis[j].tt_isdst) {
- theirdstoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- /*
- ** Initially we're assumed to be in standard time.
- */
- isdst = FALSE;
- theiroffset = theirstdoffset;
- /*
- ** Now juggle transition times and types
- ** tracking offsets as you do.
- */
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- sp->types[i] = sp->ttis[j].tt_isdst;
- if (sp->ttis[j].tt_ttisgmt) {
- /* No adjustment to transition time */
- } else {
- /*
- ** If summer time is in effect, and the
- ** transition time was not specified as
- ** standard time, add the summer time
- ** offset to the transition time;
- ** otherwise, add the standard time
- ** offset to the transition time.
- */
- /*
- ** Transitions from DST to DDST
- ** will effectively disappear since
- ** POSIX provides for only one DST
- ** offset.
- */
- if (isdst && !sp->ttis[j].tt_ttisstd) {
- sp->ats[i] += dstoffset -
- theirdstoffset;
- } else {
- sp->ats[i] += stdoffset -
- theirstdoffset;
- }
- }
- theiroffset = -sp->ttis[j].tt_gmtoff;
- if (sp->ttis[j].tt_isdst)
- theirdstoffset = theiroffset;
- else theirstdoffset = theiroffset;
- }
- /*
- ** Finally, fill in ttis.
- ** ttisstd and ttisgmt need not be handled.
- */
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = FALSE;
- sp->ttis[0].tt_abbrind = 0;
- sp->ttis[1].tt_gmtoff = -dstoffset;
- sp->ttis[1].tt_isdst = TRUE;
- sp->ttis[1].tt_abbrind = stdlen + 1;
- sp->typecnt = 2;
- }
- } else {
- dstlen = 0;
- sp->typecnt = 1; /* only standard time */
- sp->timecnt = 0;
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = 0;
- sp->ttis[0].tt_abbrind = 0;
- }
- sp->charcnt = stdlen + 1;
- if (dstlen != 0)
- sp->charcnt += dstlen + 1;
- if ((size_t) sp->charcnt > sizeof sp->chars)
- return -1;
- cp = sp->chars;
- (void) strncpy(cp, stdname, stdlen);
- cp += stdlen;
- *cp++ = '\0';
- if (dstlen != 0) {
- (void) strncpy(cp, dstname, dstlen);
- *(cp + dstlen) = '\0';
- }
- return 0;
-}
-
-static void
-gmtload(sp)
-struct state * const sp;
-{
- if (tzload(gmt, sp) != 0)
- (void) tzparse(gmt, sp, TRUE);
-}
-
-static void
-tzsetwall_basic(int rdlocked)
-{
-#ifdef NOTIFY_TZ
- notify_check_tz(&lcl_notify);
-#else
- if (TZDEFAULT) {
- static struct timespec last_mtimespec = {0, 0};
- struct stat statbuf;
-
- if (lstat(TZDEFAULT, &statbuf) == 0) {
- if (statbuf.st_mtimespec.tv_sec > last_mtimespec.tv_sec ||
- (statbuf.st_mtimespec.tv_sec == last_mtimespec.tv_sec &&
- statbuf.st_mtimespec.tv_nsec > last_mtimespec.tv_nsec)) {
- /* Trigger resetting the local TZ */
- lcl_is_set = 0;
- }
- last_mtimespec = statbuf.st_mtimespec;
- }
- }
-#endif /* NOTIFY_TZ */
- if (!rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- if (lcl_is_set < 0) {
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzsetwall_basic lcl_is_set < 0\n");
-#endif
- if (!rdlocked)
- _RWLOCK_UNLOCK(&lcl_rwlock);
- return;
- }
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzsetwall_basic not set\n");
-#endif
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- _RWLOCK_WRLOCK(&lcl_rwlock);
- lcl_is_set = -1;
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = (struct state *) malloc(sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- return;
- }
- }
-#endif /* defined ALL_STATE */
- if (tzload((char *) NULL, lclptr) != 0)
- gmtload(lclptr);
-#ifdef NOTIFY_TZ
- notify_register_tz(fullname, &lcl_notify);
-#endif /* NOTIFY_TZ */
- settzname();
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
-}
-
-void
-tzsetwall(void)
-{
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzsetwall called\n");
-#endif /* NOTIFY_TZ_DEBUG */
- tzsetwall_basic(0);
-}
-
-__private_extern__ void
-tzset_basic(int rdlocked)
-{
- const char * name;
-
- name = getenv("TZ");
- if (name == NULL) {
- tzsetwall_basic(rdlocked);
- return;
- }
-
-#ifdef NOTIFY_TZ
- notify_check_tz(&lcl_notify);
-#endif /* NOTIFY_TZ */
- if (!rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0) {
- if (!rdlocked)
- _RWLOCK_UNLOCK(&lcl_rwlock);
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzset_basic matched %s\n", lcl_TZname);
-#endif
- return;
- }
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- _RWLOCK_WRLOCK(&lcl_rwlock);
- lcl_is_set = strlen(name) < sizeof lcl_TZname;
- if (lcl_is_set)
- (void) strcpy(lcl_TZname, name);
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = (struct state *) malloc(sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
- return;
- }
- }
-#endif /* defined ALL_STATE */
- if (*name == '\0') {
- /*
- ** User wants it fast rather than right.
- */
- lclptr->leapcnt = 0; /* so, we're off a little */
- lclptr->timecnt = 0;
- lclptr->typecnt = 0;
- lclptr->ttis[0].tt_isdst = 0;
- lclptr->ttis[0].tt_gmtoff = 0;
- lclptr->ttis[0].tt_abbrind = 0;
- (void) strcpy(lclptr->chars, gmt);
-#ifdef NOTIFY_TZ
- if (fullname)
- *fullname = 0;
-#endif /* NOTIFY_TZ */
- } else if (tzload(name, lclptr) != 0)
- if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
- (void) gmtload(lclptr);
-#ifdef NOTIFY_TZ
- notify_register_tz(fullname, &lcl_notify);
-#endif /* NOTIFY_TZ */
- settzname();
- _RWLOCK_UNLOCK(&lcl_rwlock);
-
- if (rdlocked)
- _RWLOCK_RDLOCK(&lcl_rwlock);
-}
-
-void
-tzset(void)
-{
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("tzset called TZ=%s\n", getenv("TZ"));
-#endif /* NOTIFY_TZ_DEBUG */
- tzset_basic(0);
-}
-
-/*
-** The easy way to behave "as if no library function calls" localtime
-** is to not call it--so we drop its guts into "localsub", which can be
-** freely called. (And no, the PANS doesn't require the above behavior--
-** but it *is* desirable.)
-**
-** The unused offset argument is for the benefit of mktime variants.
-*/
-
-/*ARGSUSED*/
-#ifdef __LP64__
-__private_extern__ struct tm *
-#else /* !__LP64__ */
-__private_extern__ void
-#endif /* __LP64__ */
-localsub(timep, offset, tmp)
-const time_t * const timep;
-const long offset;
-struct tm * const tmp;
-{
- struct state * sp;
- const struct ttinfo * ttisp;
- int i;
- const time_t t = *timep;
-
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("localsub called\n");
-#endif /* NOTIFY_TZ_DEBUG */
- sp = lclptr;
-#ifdef ALL_STATE
- if (sp == NULL) {
-#ifdef __LP64__
- return gmtsub(timep, offset, tmp);
-#else /* !__LP64__ */
- gmtsub(timep, offset, tmp);
- return;
-#endif /* __LP64__ */
- }
-#endif /* defined ALL_STATE */
- if (sp->timecnt == 0 || t < sp->ats[0]) {
- i = 0;
- while (sp->ttis[i].tt_isdst)
- if (++i >= sp->typecnt) {
- i = 0;
- break;
- }
- } else {
- for (i = 1; i < sp->timecnt; ++i)
- if (t < sp->ats[i])
- break;
- i = sp->types[i - 1];
- }
- ttisp = &sp->ttis[i];
- /*
- ** To get (wrong) behavior that's compatible with System V Release 2.0
- ** you'd replace the statement below with
- ** t += ttisp->tt_gmtoff;
- ** timesub(&t, 0L, sp, tmp);
- */
-#ifdef __LP64__
- if (timesub(&t, ttisp->tt_gmtoff, sp, tmp) == NULL)
- return NULL;
-#else /* !__LP64__ */
- timesub(&t, ttisp->tt_gmtoff, sp, tmp);
-#endif /* __LP64__ */
- tmp->tm_isdst = ttisp->tt_isdst;
- tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
-#ifdef TM_ZONE
- tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
-#endif /* defined TM_ZONE */
-#ifdef __LP64__
- return tmp;
-#endif /* __LP64__ */
-}
-
-struct tm *
-localtime(timep)
-const time_t * const timep;
-{
- static pthread_mutex_t localtime_mutex = PTHREAD_MUTEX_INITIALIZER;
- static pthread_key_t localtime_key = -1;
- struct tm *p_tm;
-
- if (__isthreaded != 0) {
- if (localtime_key == (pthread_key_t)-1) {
- _pthread_mutex_lock(&localtime_mutex);
- if (localtime_key == (pthread_key_t)-1) {
- localtime_key = __LIBC_PTHREAD_KEY_LOCALTIME;
- if (pthread_key_init_np(localtime_key, free) < 0) {
- _pthread_mutex_unlock(&localtime_mutex);
- return(NULL);
- }
- }
- _pthread_mutex_unlock(&localtime_mutex);
- }
- p_tm = _pthread_getspecific(localtime_key);
- if (p_tm == NULL) {
- if ((p_tm = (struct tm *)malloc(sizeof(struct tm)))
- == NULL)
- return(NULL);
- _pthread_setspecific(localtime_key, p_tm);
- }
- _RWLOCK_RDLOCK(&lcl_rwlock);
- tzset_basic(1);
-#ifdef __LP64__
- p_tm = localsub(timep, 0L, p_tm);
-#else /* !__LP64__ */
- localsub(timep, 0L, p_tm);
-#endif /* __LP64__ */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- return(p_tm);
- } else {
- tzset_basic(0);
-#ifdef __LP64__
- return localsub(timep, 0L, &tm);
-#else /* !__LP64__ */
- localsub(timep, 0L, &tm);
- return(&tm);
-#endif /* __LP64__ */
- }
-}
-
-/*
-** Re-entrant version of localtime.
-*/
-
-struct tm *
-localtime_r(const time_t * const __restrict timep, struct tm * __restrict tm)
-{
- _RWLOCK_RDLOCK(&lcl_rwlock);
- tzset_basic(1);
-#ifdef __LP64__
- tm = localsub(timep, 0L, tm);
-#else /* !__LP64__ */
- localsub(timep, 0L, tm);
-#endif /* __LP64__ */
- _RWLOCK_UNLOCK(&lcl_rwlock);
- return tm;
-}
-
-/*
-** gmtsub is to gmtime as localsub is to localtime.
-*/
-
-#ifdef __LP64__
-static struct tm *
-#else /* !__LP64__ */
-static void
-#endif /* __LP64__ */
-gmtsub(timep, offset, tmp)
-const time_t * const timep;
-const long offset;
-struct tm * const tmp;
-{
-#ifdef NOTIFY_TZ_DEBUG
- NOTIFY_TZ_PRINTF("gmtsub called\n");
-#endif /* NOTIFY_TZ_DEBUG */
-#ifdef NOTIFY_TZ
- notify_check_tz(&gmt_notify);
-#endif /* NOTIFY_TZ */
- if (!gmt_is_set) {
- _MUTEX_LOCK(&gmt_mutex);
- if (!gmt_is_set) {
-#ifdef ALL_STATE
-#ifdef NOTIFY_TZ
- if (gmtptr == NULL)
-#endif /* NOTIFY_TZ */
- gmtptr = (struct state *) malloc(sizeof *gmtptr);
- if (gmtptr != NULL)
-#ifdef NOTIFY_TZ
- {
-#endif /* NOTIFY_TZ */
-#endif /* defined ALL_STATE */
- gmtload(gmtptr);
-#ifdef NOTIFY_TZ
- notify_register_tz(fullname, &gmt_notify);
-#ifdef ALL_STATE
- }
-#endif
-#endif /* NOTIFY_TZ */
- gmt_is_set = TRUE;
- }
- _MUTEX_UNLOCK(&gmt_mutex);
- }
-#ifdef __LP64__
- if(timesub(timep, offset, gmtptr, tmp) == NULL)
- return NULL;
-#else /* !__LP64__ */
- timesub(timep, offset, gmtptr, tmp);
-#endif /* __LP64__ */
-#ifdef TM_ZONE
- /*
- ** Could get fancy here and deliver something such as
- ** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,
- ** but this is no time for a treasure hunt.
- */
- if (offset != 0)
- tmp->TM_ZONE = wildabbr;
- else {
-#ifdef ALL_STATE
- if (gmtptr == NULL)
- tmp->TM_ZONE = (char *)gmt;
- else tmp->TM_ZONE = gmtptr->chars;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- tmp->TM_ZONE = gmtptr->chars;
-#endif /* State Farm */
- }
-#endif /* defined TM_ZONE */
-#ifdef __LP64__
- return tmp;
-#endif /* __LP64__ */
-}
-
-struct tm *
-gmtime(timep)
-const time_t * const timep;
-{
- static pthread_mutex_t gmtime_mutex = PTHREAD_MUTEX_INITIALIZER;
- static pthread_key_t gmtime_key = -1;
- struct tm *p_tm;
-
- if (__isthreaded != 0) {
- if (gmtime_key == (pthread_key_t)-1) {
- _pthread_mutex_lock(&gmtime_mutex);
- if (gmtime_key == (pthread_key_t)-1) {
- gmtime_key = __LIBC_PTHREAD_KEY_GMTIME;
- if (pthread_key_init_np(gmtime_key, free) < 0) {
- _pthread_mutex_unlock(&gmtime_mutex);
- return(NULL);
- }
- }
- _pthread_mutex_unlock(&gmtime_mutex);
- }
- /*
- * Changed to follow POSIX.1 threads standard, which
- * is what BSD currently has.
- */
- if ((p_tm = _pthread_getspecific(gmtime_key)) == NULL) {
- if ((p_tm = (struct tm *)malloc(sizeof(struct tm)))
- == NULL) {
- return(NULL);
- }
- _pthread_setspecific(gmtime_key, p_tm);
- }
-#ifdef __LP64__
- return gmtsub(timep, 0L, p_tm);
-#else /* !__LP64__ */
- gmtsub(timep, 0L, p_tm);
- return(p_tm);
-#endif /* __LP64__ */
- }
- else {
-#ifdef __LP64__
- return gmtsub(timep, 0L, &tm);
-#else /* !__LP64__ */
- gmtsub(timep, 0L, &tm);
- return(&tm);
-#endif /* __LP64__ */
- }
-}
-
-/*
-* Re-entrant version of gmtime.
-*/
-
-struct tm *
-gmtime_r(timep, tm)
-const time_t * const timep;
-struct tm * tm;
-{
-
-#ifdef __LP64__
- return gmtsub(timep, 0L, tm);
-#else /* !__LP64__ */
- gmtsub(timep, 0L, tm);
- return tm;
-#endif /* __LP64__ */
-}
-
-#ifdef STD_INSPIRED
-
-struct tm *
-offtime(timep, offset)
-const time_t * const timep;
-const long offset;
-{
-#ifdef __LP64__
- return gmtsub(timep, offset, &tm);
-#else /* !__LP64__ */
- gmtsub(timep, offset, &tm);
- return &tm;
-#endif /* __LP64__ */
-}
-
-#endif /* defined STD_INSPIRED */
-
-#ifdef __LP64__
-static struct tm *
-#else /* !__LP64__ */
-static void
-#endif /* __LP64__ */
-timesub(timep, offset, sp, tmp)
-const time_t * const timep;
-const long offset;
-const struct state * const sp;
-struct tm * const tmp;
-{
- const struct lsinfo * lp;
- long days;
- long rem;
- long y;
- int yleap;
- const int * ip;
- long corr;
- int hit;
- int i;
-
- corr = 0;
- hit = 0;
-#ifdef ALL_STATE
- i = (sp == NULL) ? 0 : sp->leapcnt;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- i = sp->leapcnt;
-#endif /* State Farm */
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans) {
- if (*timep == lp->ls_trans) {
- hit = ((i == 0 && lp->ls_corr > 0) ||
- lp->ls_corr > sp->lsis[i - 1].ls_corr);
- if (hit)
- while (i > 0 &&
- sp->lsis[i].ls_trans ==
- sp->lsis[i - 1].ls_trans + 1 &&
- sp->lsis[i].ls_corr ==
- sp->lsis[i - 1].ls_corr + 1) {
- ++hit;
- --i;
- }
- }
- corr = lp->ls_corr;
- break;
- }
- }
- days = *timep / SECSPERDAY;
- rem = *timep % SECSPERDAY;
-#ifdef mc68k
- if (*timep == 0x80000000) {
- /*
- ** A 3B1 muffs the division on the most negative number.
- */
- days = -24855;
- rem = -11648;
- }
-#endif /* defined mc68k */
- rem += (offset - corr);
- while (rem < 0) {
- rem += SECSPERDAY;
- --days;
- }
- while (rem >= SECSPERDAY) {
- rem -= SECSPERDAY;
- ++days;
- }
- tmp->tm_hour = (int) (rem / SECSPERHOUR);
- rem = rem % SECSPERHOUR;
- tmp->tm_min = (int) (rem / SECSPERMIN);
- /*
- ** A positive leap second requires a special
- ** representation. This uses "... ??:59:60" et seq.
- */
- tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;
- tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);
- if (tmp->tm_wday < 0)
- tmp->tm_wday += DAYSPERWEEK;
- y = EPOCH_YEAR;
-#define _LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400)
-#ifdef __LP64__
-#define LEAPS_THRU_END_OF(y) ((y) >= 0 ? _LEAPS_THRU_END_OF(y) : _LEAPS_THRU_END_OF((y) + 1) - 1)
-#else /* !__LP64__ */
-#define LEAPS_THRU_END_OF(y) _LEAPS_THRU_END_OF(y)
-#endif /* __LP64__ */
- while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) {
- long newy;
-
- newy = y + days / DAYSPERNYEAR;
- if (days < 0)
- --newy;
- days -= (newy - y) * DAYSPERNYEAR +
- LEAPS_THRU_END_OF(newy - 1) -
- LEAPS_THRU_END_OF(y - 1);
- y = newy;
- }
-#ifdef __LP64__
- y -= TM_YEAR_BASE;
- if (y < INT_MIN || y > INT_MAX) {
- errno = EOVERFLOW;
- return NULL;
- }
- tmp->tm_year = y;
-#else /* !__LP64__ */
- tmp->tm_year = y - TM_YEAR_BASE;
-#endif /* __LP64__ */
- tmp->tm_yday = (int) days;
- ip = mon_lengths[yleap];
- for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))
- days = days - (long) ip[tmp->tm_mon];
- tmp->tm_mday = (int) (days + 1);
- tmp->tm_isdst = 0;
-#ifdef TM_GMTOFF
- tmp->TM_GMTOFF = offset;
-#endif /* defined TM_GMTOFF */
-#ifdef __LP64__
- return tmp;
-#endif /* __LP64__ */
-}
-
-char *
-ctime(timep)
-const time_t * const timep;
-{
-/*
-** Section 4.12.3.2 of X3.159-1989 requires that
-** The ctime function converts the calendar time pointed to by timer
-** to local time in the form of a string. It is equivalent to
-** asctime(localtime(timer))
-*/
-#ifdef __LP64__
- /*
- * In 64-bit, the timep value may produce a time value with a year
- * that exceeds 32-bits in size (won't fit in struct tm), so localtime
- * will return NULL.
- */
- struct tm *tm = localtime(timep);
-
- if (tm == NULL)
- return NULL;
- return asctime(tm);
-#else /* !__LP64__ */
- return asctime(localtime(timep));
-#endif /* __LP64__ */
-}
-
-char *
-ctime_r(timep, buf)
-const time_t * const timep;
-char * buf;
-{
- struct tm tm;
-
-#ifdef __LP64__
- /*
- * In 64-bit, the timep value may produce a time value with a year
- * that exceeds 32-bits in size (won't fit in struct tm), so localtime_r
- * will return NULL.
- */
- if (localtime_r(timep, &tm) == NULL)
- return NULL;
- return asctime_r(&tm, buf);
-#else /* !__LP64__ */
- return asctime_r(localtime_r(timep, &tm), buf);
-#endif /* __LP64__ */
-}
-
-/*
-** Adapted from code provided by Robert Elz, who writes:
-** The "best" way to do mktime I think is based on an idea of Bob
-** Kridle's (so its said...) from a long time ago.
-** [kridle@xinet.com as of 1996-01-16.]
-** It does a binary search of the time_t space. Since time_t's are
-** just 32 bits, its a max of 32 iterations (even at 64 bits it
-** would still be very reasonable).
-*/
-
-#ifndef WRONG
-#define WRONG (-1)
-#endif /* !defined WRONG */
-
-/*
-** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com).
-*/
-
-static int
-increment_overflow(number, delta)
-int * number;
-int delta;
-{
- int number0;
-
- number0 = *number;
- *number += delta;
- return (*number < number0) != (delta < 0);
-}
-
-static int
-normalize_overflow(tensptr, unitsptr, base)
-int * const tensptr;
-int * const unitsptr;
-const int base;
-{
- int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return increment_overflow(tensptr, tensdelta);
-}
-
-static int
-tmcomp(atmp, btmp)
-const struct tm * const atmp;
-const struct tm * const btmp;
-{
- int result;
-
- /*
- * Assume that atmp and btmp point to normalized tm strutures.
- * So only arithmetic with tm_year could overflow in 64-bit.
- */
- if (atmp->tm_year != btmp->tm_year) {
- return (atmp->tm_year > btmp->tm_year ? 1 : -1);
- }
- if ((result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
- (result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
- (result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
- (result = (atmp->tm_min - btmp->tm_min)) == 0)
- result = atmp->tm_sec - btmp->tm_sec;
- return result;
-}
-
-static time_t
-time2sub(tmp, funcp, offset, okayp, do_norm_secs, unix03)
-struct tm * const tmp;
-#ifdef __LP64__
-struct tm *(* const funcp)(const time_t*, long, struct tm*);
-#else /* !__LP64__ */
-void (* const funcp)(const time_t*, long, struct tm*);
-#endif /* __LP64__ */
-const long offset;
-int * const okayp;
-const int do_norm_secs;
-int unix03;
-{
- const struct state * sp;
- int dir;
- int bits;
- int i, j ;
- int saved_seconds;
- time_t newt;
- time_t t;
- struct tm yourtm, mytm;
-#ifdef __LP64__
- long year, il;
-#endif /* __LP64__ */
-
- *okayp = FALSE;
- yourtm = *tmp;
- if (do_norm_secs) {
- if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
- SECSPERMIN))
- return WRONG;
- }
- if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
- return WRONG;
- if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
- return WRONG;
- if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR))
- return WRONG;
- /*
- ** Turn yourtm.tm_year into an actual year number for now.
- ** It is converted back to an offset from TM_YEAR_BASE later.
- */
-#ifdef __LP64__
- year = (long)yourtm.tm_year + TM_YEAR_BASE;
-#else /* !__LP64__ */
- if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE))
- return WRONG;
-#endif /* __LP64__ */
- while (yourtm.tm_mday <= 0) {
-#ifdef __LP64__
- year--;
- il = year + (1 < yourtm.tm_mon);
- yourtm.tm_mday += year_lengths[isleap(il)];
-#else /* !__LP64__ */
- if (increment_overflow(&yourtm.tm_year, -1))
- return WRONG;
- i = yourtm.tm_year + (1 < yourtm.tm_mon);
- yourtm.tm_mday += year_lengths[isleap(i)];
-#endif /* __LP64__ */
- }
- while (yourtm.tm_mday > DAYSPERLYEAR) {
-#ifdef __LP64__
- il = year + (1 < yourtm.tm_mon);
- yourtm.tm_mday -= year_lengths[isleap(il)];
- year++;
-#else /* !__LP64__ */
- i = yourtm.tm_year + (1 < yourtm.tm_mon);
- yourtm.tm_mday -= year_lengths[isleap(i)];
- if (increment_overflow(&yourtm.tm_year, 1))
- return WRONG;
-#endif /* __LP64__ */
- }
- for ( ; ; ) {
-#ifdef __LP64__
- i = mon_lengths[isleap(year)][yourtm.tm_mon];
-#else /* !__LP64__ */
- i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon];
-#endif /* __LP64__ */
- if (yourtm.tm_mday <= i)
- break;
- yourtm.tm_mday -= i;
- if (++yourtm.tm_mon >= MONSPERYEAR) {
- yourtm.tm_mon = 0;
-#ifdef __LP64__
- year++;
-#else /* !__LP64__ */
- if (increment_overflow(&yourtm.tm_year, 1))
- return WRONG;
-#endif /* __LP64__ */
- }
- }
-#ifdef __LP64__
- year -= TM_YEAR_BASE;
- if (year > INT_MAX || year < INT_MIN)
- return WRONG;
- yourtm.tm_year = year;
-#else /* !__LP64__ */
- if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE))
- return WRONG;
-#endif /* __LP64__ */
- /* Don't go below 1900 for POLA */
- if (yourtm.tm_year < 0)
- return WRONG;
- if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
- saved_seconds = 0;
- else if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) {
- /*
- ** We can't set tm_sec to 0, because that might push the
- ** time below the minimum representable time.
- ** Set tm_sec to 59 instead.
- ** This assumes that the minimum representable time is
- ** not in the same minute that a leap second was deleted from,
- ** which is a safer assumption than using 58 would be.
- */
- if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
- return WRONG;
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = SECSPERMIN - 1;
- } else {
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = 0;
- }
- /*
- ** Divide the search space in half
- ** (this works whether time_t is signed or unsigned).
- */
-#ifdef __LP64__
- /* optimization: see if the value is 31-bit (signed) */
- t = (((time_t) 1) << (TYPE_BIT(int) - 1)) - 1;
- bits = ((*funcp)(&t, offset, &mytm) == NULL || tmcomp(&mytm, &yourtm) < 0) ? TYPE_BIT(time_t) - 1 : TYPE_BIT(int) - 1;
-#else /* !__LP64__ */
- bits = TYPE_BIT(time_t) - 1;
-#endif /* __LP64__ */
- /*
- ** In 64-bit, we now return an error if we cannot represent the
- ** struct tm value in a time_t. And tmcomp() is fixed to avoid
- ** overflow in tm_year. So we only put a cap on bits because time_t
- ** can't be larger that 56 bit (when tm_year == INT_MAX).
- */
- if (bits > 56)
- bits = 56;
- /*
- ** If time_t is signed, then 0 is just above the median,
- ** assuming two's complement arithmetic.
- ** If time_t is unsigned, then (1 << bits) is just above the median.
- */
- t = TYPE_SIGNED(time_t) ? 0 : (((time_t) 1) << bits);
- for ( ; ; ) {
-#ifdef __LP64__
- if ((*funcp)(&t, offset, &mytm) == NULL) {
- /* we overflowed, so t is too big */
- dir = 1;
- goto skip_tmcomp;
- }
-#else /* !__LP64__ */
- (*funcp)(&t, offset, &mytm);
-#endif /* __LP64__ */
- dir = tmcomp(&mytm, &yourtm);
-#ifdef __LP64__
-skip_tmcomp:
-#endif /* __LP64__ */
- if (dir != 0) {
- if (bits-- < 0)
- return WRONG;
- if (bits < 0)
- --t; /* may be needed if new t is minimal */
- else if (dir > 0)
- t -= ((time_t) 1) << bits;
- else t += ((time_t) 1) << bits;
- continue;
- }
- sp = (funcp == localsub) ? lclptr : gmtptr;
- if (unix03 && sp->typecnt == 1 && yourtm.tm_isdst > 0)
- yourtm.tm_isdst = 0; /* alternative time does not apply */
- if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
- break;
- /*
- ** Right time, wrong type.
- ** Hunt for right time, right type.
- ** It's okay to guess wrong since the guess
- ** gets checked.
- */
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- for (i = sp->typecnt - 1; i >= 0; --i) {
- if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
- continue;
- for (j = sp->typecnt - 1; j >= 0; --j) {
- if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
- continue;
- newt = t + sp->ttis[j].tt_gmtoff -
- sp->ttis[i].tt_gmtoff;
-#ifdef __LP64__
- if ((*funcp)(&newt, offset, &mytm) == NULL)
- return WRONG;
-#else /* !__LP64__ */
- (*funcp)(&newt, offset, &mytm);
-#endif /* __LP64__ */
- if (tmcomp(&mytm, &yourtm) != 0)
- continue;
- if (mytm.tm_isdst != yourtm.tm_isdst)
- continue;
- /*
- ** We have a match.
- */
- t = newt;
- goto label;
- }
- }
- return WRONG;
- }
-label:
- newt = t + saved_seconds;
- if ((newt < t) != (saved_seconds < 0))
- return WRONG;
- t = newt;
-#ifdef __LP64__
- if ((*funcp)(&t, offset, tmp) == NULL)
- return WRONG;
-#else /* !__LP64__ */
- (*funcp)(&t, offset, tmp);
-#endif /* __LP64__ */
- *okayp = TRUE;
- return t;
-}
-
-static time_t
-time2(tmp, funcp, offset, okayp, unix03)
-struct tm * const tmp;
-#ifdef __LP64__
-struct tm *(* const funcp)(const time_t*, long, struct tm*);
-#else /* !__LP64__ */
-void (* const funcp)(const time_t*, long, struct tm*);
-#endif /* __LP64__ */
-const long offset;
-int * const okayp;
-int unix03;
-{
- time_t t;
-
- /*
- ** First try without normalization of seconds
- ** (in case tm_sec contains a value associated with a leap second).
- ** If that fails, try with normalization of seconds.
- */
- t = time2sub(tmp, funcp, offset, okayp, FALSE, unix03);
- return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE, unix03);
-}
-
-__private_extern__ time_t
-time1(tmp, funcp, offset, unix03)
-struct tm * const tmp;
-#ifdef __LP64__
-struct tm *(* const funcp)(const time_t *, long, struct tm *);
-#else /* !__LP64__ */
-void (* const funcp)(const time_t *, long, struct tm *);
-#endif /* __LP64__ */
-const long offset;
-int unix03;
-{
- time_t t;
- const struct state * sp;
- int samei, otheri;
- int sameind, otherind;
- int i;
- int nseen;
- int seen[TZ_MAX_TYPES];
- int types[TZ_MAX_TYPES];
- int okay;
-
- if (tmp->tm_isdst > 1)
- tmp->tm_isdst = 1;
- t = time2(tmp, funcp, offset, &okay, unix03);
-#ifdef PCTS
- /*
- ** PCTS code courtesy Grant Sullivan (grant@osf.org).
- */
- if (okay)
- return t;
- if (tmp->tm_isdst < 0)
- tmp->tm_isdst = 0; /* reset to std and try again */
-#endif /* defined PCTS */
-#ifndef PCTS
- if (okay || tmp->tm_isdst < 0)
- return t;
-#endif /* !defined PCTS */
- /*
- ** We're supposed to assume that somebody took a time of one type
- ** and did some math on it that yielded a "struct tm" that's bad.
- ** We try to divine the type they started from and adjust to the
- ** type they need.
- */
- sp = (funcp == localsub) ? lclptr : gmtptr;
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- for (i = 0; i < sp->typecnt; ++i)
- seen[i] = FALSE;
- nseen = 0;
- for (i = sp->timecnt - 1; i >= 0; --i)
- if (!seen[sp->types[i]]) {
- seen[sp->types[i]] = TRUE;
- types[nseen++] = sp->types[i];
- }
- for (sameind = 0; sameind < nseen; ++sameind) {
- samei = types[sameind];
- if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
- continue;
- for (otherind = 0; otherind < nseen; ++otherind) {
- otheri = types[otherind];
- if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
- continue;
- tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- t = time2(tmp, funcp, offset, &okay, unix03);
- if (okay)
- return t;
- tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- }
- }
- return WRONG;
-}
-#else /* BUILDING_VARIANT */
-__private_extern__ pthread_rwlock_t lcl_rwlock;
-#endif /* BUILDING_VARIANT */
-
-time_t
-mktime(tmp)
-struct tm * const tmp;
-{
- time_t mktime_return_value;
- int serrno = errno;
- _RWLOCK_RDLOCK(&lcl_rwlock);
- tzset_basic(1);
- mktime_return_value = time1(tmp, localsub, 0L, __DARWIN_UNIX03);
- _RWLOCK_UNLOCK(&lcl_rwlock);
- errno = serrno;
- return(mktime_return_value);
-}
-
-#if !BUILDING_VARIANT
-#ifdef STD_INSPIRED
-
-time_t
-timelocal(tmp)
-struct tm * const tmp;
-{
- tmp->tm_isdst = -1; /* in case it wasn't initialized */
- return mktime(tmp);
-}
-
-time_t
-timegm(tmp)
-struct tm * const tmp;
-{
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, 0L, __DARWIN_UNIX03);
-}
-
-time_t
-timeoff(tmp, offset)
-struct tm * const tmp;
-const long offset;
-{
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, offset, __DARWIN_UNIX03);
-}
-
-#endif /* defined STD_INSPIRED */
-
-#ifdef CMUCS
-
-/*
-** The following is supplied for compatibility with
-** previous versions of the CMUCS runtime library.
-*/
-
-long
-gtime(tmp)
-struct tm * const tmp;
-{
- const time_t t = mktime(tmp);
-
- if (t == WRONG)
- return -1;
- return t;
-}
-
-#endif /* defined CMUCS */
-
-/*
-** XXX--is the below the right way to conditionalize??
-*/
-
-#ifdef STD_INSPIRED
-
-/*
-** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
-** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
-** is not the case if we are accounting for leap seconds.
-** So, we provide the following conversion routines for use
-** when exchanging timestamps with POSIX conforming systems.
-*/
-
-static long
-leapcorr(timep)
-time_t * timep;
-{
- struct state * sp;
- struct lsinfo * lp;
- int i;
-
- sp = lclptr;
- i = sp->leapcnt;
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans)
- return lp->ls_corr;
- }
- return 0;
-}
-
-time_t
-time2posix(t)
-time_t t;
-{
- tzset();
- return t - leapcorr(&t);
-}
-
-time_t
-posix2time(t)
-time_t t;
-{
- time_t x;
- time_t y;
-
- tzset();
- /*
- ** For a positive leap second hit, the result
- ** is not unique. For a negative leap second
- ** hit, the corresponding time doesn't exist,
- ** so we return an adjacent second.
- */
- x = t + leapcorr(&t);
- y = x - leapcorr(&x);
- if (y < t) {
- do {
- x++;
- y = x - leapcorr(&x);
- } while (y < t);
- if (t != y)
- return x - 1;
- } else if (y > t) {
- do {
- --x;
- y = x - leapcorr(&x);
- } while (y > t);
- if (t != y)
- return x + 1;
- }
- return x;
-}
-
-#endif /* defined STD_INSPIRED */
-#endif /* !BUILDING_VARIANT */