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stdtime/FreeBSD/localtime.c Libc-825.26 Libc-320
--- Libc/Libc-825.26/stdtime/FreeBSD/localtime.c
+++ Libc/Libc-320/stdtime/FreeBSD/localtime.c
@@ -1,15 +1,15 @@
 /*
 ** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
+** June 5, 1996 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";
+static char	elsieid[] __unused = "@(#)localtime.c	7.57";
 #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 $");
+__FBSDID("$FreeBSD: src/lib/libc/stdtime/localtime.c,v 1.36 2003/02/16 17:29:11 nectar Exp $");
 
 /*
 ** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).
@@ -22,22 +22,8 @@
 #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"
 
@@ -47,21 +33,6 @@
 
 #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.
@@ -99,30 +70,14 @@
 
 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 */
+static const char	gmt[] = "GMT";
 
 struct ttinfo {				/* time type information */
-	long		tt_gmtoff;	/* UTC offset in seconds */
+	long		tt_gmtoff;	/* GMT 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 */
+	int		tt_ttisgmt;	/* TRUE if transition is GMT */
 };
 
 struct lsinfo {				/* leap second information */
@@ -164,94 +119,36 @@
 #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 *	getzname(const char * strp);
 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 void		localsub(const time_t * timep, long offset,
+				struct tm * tmp);
 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		time1(struct tm * tmp,
+				void(*funcp) (const time_t *,
+				long, struct tm *),
+				long offset);
 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__ */
+				long offset, int * okayp);
 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,
@@ -277,14 +174,9 @@
 #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	lcl_mutex = PTHREAD_MUTEX_INITIALIZER;
 static pthread_mutex_t	gmt_mutex = PTHREAD_MUTEX_INITIALIZER;
 
 char *			tzname[2] = {
@@ -302,61 +194,14 @@
 
 static struct tm	tm;
 
-#define USG_COMPAT
-#define ALTZONE
 #ifdef USG_COMPAT
+time_t			timezone = 0;
 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
+time_t			altzone = 0;
 #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)
@@ -375,203 +220,51 @@
 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)
+	int			i;
 
 	tzname[0] = wildabbr;
 	tzname[1] = wildabbr;
 #ifdef USG_COMPAT
 	daylight = 0;
-	_st_set_timezone(0);
+	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;
+		tzname[0] = tzname[1] = gmt;
 		return;
 	}
 #endif /* defined ALL_STATE */
+	for (i = 0; i < sp->typecnt; ++i) {
+		const struct ttinfo * const	ttisp = &sp->ttis[i];
+
+		tzname[ttisp->tt_isdst] =
+			&sp->chars[ttisp->tt_abbrind];
+#ifdef USG_COMPAT
+		if (ttisp->tt_isdst)
+			daylight = 1;
+		if (i == 0 || !ttisp->tt_isdst)
+			timezone = -(ttisp->tt_gmtoff);
+#endif /* defined USG_COMPAT */
+#ifdef ALTZONE
+		if (i == 0 || ttisp->tt_isdst)
+			altzone = -(ttisp->tt_gmtoff);
+#endif /* defined ALTZONE */
+	}
 	/*
-	 * 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 */
+	** And to get the latest zone names into tzname. . .
+	*/
+	for (i = 0; i < sp->timecnt; ++i) {
+		const struct ttinfo * const	ttisp =
+							&sp->ttis[
+								sp->types[i]];
+
+		tzname[ttisp->tt_isdst] =
+			&sp->chars[ttisp->tt_abbrind];
+	}
+}
 
 static int
 tzload(name, sp)
@@ -582,9 +275,6 @@
 	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] == '/') || 
@@ -602,15 +292,7 @@
 		** 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;
@@ -618,11 +300,7 @@
 		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, "/");
@@ -634,10 +312,6 @@
 				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)
@@ -649,26 +323,27 @@
 	}
 	{
 		struct tzhead *	tzhp;
-		union {
-			struct tzhead	tzhead;
-			char		buf[sizeof *sp + sizeof *tzhp];
-		} u;
+		char		buf[sizeof *sp + sizeof *tzhp];
 		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);
+		i = _read(fid, buf, sizeof 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;
+		p = buf;
+		p += (sizeof tzhp->tzh_magic) + (sizeof tzhp->tzh_reserved);
+		ttisstdcnt = (int) detzcode(p);
+		p += 4;
+		ttisgmtcnt = (int) detzcode(p);
+		p += 4;
+		sp->leapcnt = (int) detzcode(p);
+		p += 4;
+		sp->timecnt = (int) detzcode(p);
+		p += 4;
+		sp->typecnt = (int) detzcode(p);
+		p += 4;
+		sp->charcnt = (int) detzcode(p);
+		p += 4;
 		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 ||
@@ -676,7 +351,7 @@
 			(ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
 			(ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
 				return -1;
-		if (i - (p - u.buf) < sp->timecnt * 4 +	/* ats */
+		if (i - (p - buf) < sp->timecnt * 4 +	/* ats */
 			sp->timecnt +			/* types */
 			sp->typecnt * (4 + 2) +		/* ttinfos */
 			sp->charcnt +			/* chars */
@@ -765,24 +440,14 @@
 */
 
 static const char *
-getzname(strp, name, len)
+getzname(strp)
 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;
 }
 
@@ -944,8 +609,8 @@
 }
 
 /*
-** 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,
+** Given the Epoch-relative time of January 1, 00:00:00 GMT, in a year, the
+** year, a rule, and the offset from GMT at the time that rule takes effect,
 ** calculate the Epoch-relative time that rule takes effect.
 */
 
@@ -1031,10 +696,10 @@
 	}
 
 	/*
-	** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
+	** "value" is the Epoch-relative time of 00:00:00 GMT 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.
+	** from GMT.
 	*/
 	return value + rulep->r_time + offset;
 }
@@ -1062,15 +727,16 @@
 	int			load_result;
 
 	INITIALIZE(dstname);
+	stdname = name;
 	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);
+		name = getzname(name);
+		stdlen = name - stdname;
 		if (stdlen < 3)
 			return -1;
 		if (*name == '\0')
@@ -1082,14 +748,12 @@
 		}
 	}
 	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);
+		name = getzname(name);
+		dstlen = name - dstname;	/* length of DST zone name */
 		if (dstlen < 3)
 			return -1;
 		if (*name != '\0' && *name != ',' && *name != ';') {
@@ -1097,8 +761,6 @@
 			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;
@@ -1160,6 +822,8 @@
 			int	j;
 
 			if (*name != '\0')
+				return -1;
+			if (load_result != 0)
 				return -1;
 			/*
 			** Initial values of theirstdoffset and theirdstoffset.
@@ -1234,7 +898,6 @@
 			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;
@@ -1247,7 +910,7 @@
 	sp->charcnt = stdlen + 1;
 	if (dstlen != 0)
 		sp->charcnt += dstlen + 1;
-	if ((size_t) sp->charcnt > sizeof sp->chars)
+	if (sp->charcnt > sizeof sp->chars)
 		return -1;
 	cp = sp->chars;
 	(void) strncpy(cp, stdname, stdlen);
@@ -1269,42 +932,10 @@
 }
 
 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);
+tzsetwall_basic(void)
+{
+	if (lcl_is_set < 0)
 		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
@@ -1312,62 +943,37 @@
 		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)
+	_MUTEX_LOCK(&lcl_mutex);
+	tzsetwall_basic();
+	_MUTEX_UNLOCK(&lcl_mutex);
+}
+
+static void
+tzset_basic(void)
 {
 	const char *	name;
 
 	name = getenv("TZ");
 	if (name == NULL) {
-		tzsetwall_basic(rdlocked);
+		tzsetwall_basic();
 		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
+	if (lcl_is_set > 0  &&  strcmp(lcl_TZname, name) == 0)
 		return;
-	}
-	_RWLOCK_UNLOCK(&lcl_rwlock);
-
-	_RWLOCK_WRLOCK(&lcl_rwlock);
-	lcl_is_set = strlen(name) < sizeof lcl_TZname;
+	lcl_is_set = (strlen(name) < sizeof(lcl_TZname));
 	if (lcl_is_set)
 		(void) strcpy(lcl_TZname, name);
 
@@ -1376,9 +982,6 @@
 		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;
 		}
 	}
@@ -1389,35 +992,21 @@
 		*/
 		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);
+	_MUTEX_LOCK(&lcl_mutex);
+	tzset_basic();
+	_MUTEX_UNLOCK(&lcl_mutex);
 }
 
 /*
@@ -1430,11 +1019,7 @@
 */
 
 /*ARGSUSED*/
-#ifdef __LP64__
-__private_extern__ struct tm *
-#else /* !__LP64__ */
-__private_extern__ void
-#endif /* __LP64__ */
+static void
 localsub(timep, offset, tmp)
 const time_t * const	timep;
 const long		offset;
@@ -1445,18 +1030,11 @@
 	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]) {
@@ -1479,20 +1057,24 @@
 	**	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_r(timep, p_tm)
+const time_t * const	timep;
+struct tm *p_tm;
+{
+	_MUTEX_LOCK(&lcl_mutex);
+	tzset_basic();
+	localsub(timep, 0L, p_tm);
+	_MUTEX_UNLOCK(&lcl_mutex);
+	return(p_tm);
 }
 
 struct tm *
@@ -1504,17 +1086,14 @@
 	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_lock(&localtime_mutex);
+		if (localtime_key < 0) {
+			if (_pthread_key_create(&localtime_key, free) < 0) {
+				_pthread_mutex_unlock(&localtime_mutex);
+				return(NULL);
 			}
-			_pthread_mutex_unlock(&localtime_mutex);
-		}
+		}
+		_pthread_mutex_unlock(&localtime_mutex);
 		p_tm = _pthread_getspecific(localtime_key);
 		if (p_tm == NULL) {
 			if ((p_tm = (struct tm *)malloc(sizeof(struct tm)))
@@ -1522,98 +1101,43 @@
 				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__ */
+		_pthread_mutex_lock(&lcl_mutex);
+		tzset_basic();
 		localsub(timep, 0L, p_tm);
-#endif /* __LP64__ */
-		_RWLOCK_UNLOCK(&lcl_rwlock);
+		_pthread_mutex_unlock(&lcl_mutex);
 		return(p_tm);
 	} else {
-		tzset_basic(0);
-#ifdef __LP64__
-		return localsub(timep, 0L, &tm);
-#else /* !__LP64__ */
+		tzset_basic();
 		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 */
+	_MUTEX_LOCK(&gmt_mutex);
 	if (!gmt_is_set) {
-		_MUTEX_LOCK(&gmt_mutex);
-		if (!gmt_is_set) {
+		gmt_is_set = TRUE;
 #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 */
+		gmtptr = (struct state *) malloc(sizeof *gmtptr);
+		if (gmtptr != NULL)
 #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__ */
+			gmtload(gmtptr);
+	}
+	_MUTEX_UNLOCK(&gmt_mutex);
 	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,
+	** "GMT+xxxx" or "GMT-xxxx" if offset is non-zero,
 	** but this is no time for a treasure hunt.
 	*/
 	if (offset != 0)
@@ -1621,7 +1145,7 @@
 	else {
 #ifdef ALL_STATE
 		if (gmtptr == NULL)
-			tmp->TM_ZONE = (char *)gmt;
+			tmp->TM_ZONE = gmt;
 		else	tmp->TM_ZONE = gmtptr->chars;
 #endif /* defined ALL_STATE */
 #ifndef ALL_STATE
@@ -1629,9 +1153,6 @@
 #endif /* State Farm */
 	}
 #endif /* defined TM_ZONE */
-#ifdef __LP64__
-	return tmp;
-#endif /* __LP64__ */
 }
 
 struct tm *
@@ -1643,17 +1164,14 @@
 	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_lock(&gmtime_mutex);
+		if (gmtime_key < 0) {
+			if (_pthread_key_create(&gmtime_key, free) < 0) {
+				_pthread_mutex_unlock(&gmtime_mutex);
+				return(NULL);
 			}
-			_pthread_mutex_unlock(&gmtime_mutex);
-		}
+		}
+		_pthread_mutex_unlock(&gmtime_mutex);
 		/*
 		 * Changed to follow POSIX.1 threads standard, which
 		 * is what BSD currently has.
@@ -1665,39 +1183,20 @@
 			}
 			_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__ */
+gmtime_r(const time_t * timep, struct tm * tm)
+{
 	gmtsub(timep, 0L, tm);
-	return tm;
-#endif /* __LP64__ */
+	return(tm);
 }
 
 #ifdef STD_INSPIRED
@@ -1707,21 +1206,13 @@
 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;
@@ -1798,12 +1289,7 @@
 	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__ */
+#define LEAPS_THRU_END_OF(y)	((y) / 4 - (y) / 100 + (y) / 400)
 	while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) {
 		long	newy;
 
@@ -1815,16 +1301,7 @@
 			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))
@@ -1834,9 +1311,6 @@
 #ifdef TM_GMTOFF
 	tmp->TM_GMTOFF = offset;
 #endif /* defined TM_GMTOFF */
-#ifdef __LP64__
-	return tmp;
-#endif /* __LP64__ */
 }
 
 char *
@@ -1845,45 +1319,20 @@
 {
 /*
 ** Section 4.12.3.2 of X3.159-1989 requires that
-**	The ctime function converts the calendar time pointed to by timer
+**	The ctime funciton 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__ */
+char *buf;
+{
+        struct tm tm;
 	return asctime_r(localtime_r(timep, &tm), buf);
-#endif /* __LP64__ */
 }
 
 /*
@@ -1938,14 +1387,8 @@
 {
 	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 &&
+	if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
+		(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)
@@ -1954,17 +1397,11 @@
 }
 
 static time_t
-time2sub(tmp, funcp, offset, okayp, do_norm_secs, unix03)
+time2(tmp, funcp, offset, okayp)
 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;
@@ -1974,17 +1411,9 @@
 	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))
@@ -1995,66 +1424,32 @@
 	** 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;
@@ -2079,18 +1474,10 @@
 	** 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 we have more than this, we will overflow tm_year for tmcomp().
+	** We should really return an error if we cannot represent it.
 	*/
 	if (bits > 56)
 		bits = 56;
@@ -2101,19 +1488,8 @@
 	*/
 	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;
@@ -2124,9 +1500,6 @@
 			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;
 		/*
@@ -2135,6 +1508,12 @@
 		** It's okay to guess wrong since the guess
 		** gets checked.
 		*/
+		/*
+		** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
+		*/
+		sp = (const struct state *)
+			(((void *) funcp == (void *) localsub) ?
+			lclptr : gmtptr);
 #ifdef ALL_STATE
 		if (sp == NULL)
 			return WRONG;
@@ -2147,12 +1526,7 @@
 					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)
@@ -2171,63 +1545,25 @@
 	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)
+time1(tmp, funcp, offset)
 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__ */
+void (* const		funcp)(const time_t *, long, struct tm *);
 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);
+	t = time2(tmp, funcp, offset, &okay);
 #ifdef PCTS
 	/*
 	** PCTS code courtesy Grant Sullivan (grant@osf.org).
@@ -2247,31 +1583,25 @@
 	** We try to divine the type they started from and adjust to the
 	** type they need.
 	*/
-	sp = (funcp == localsub) ? lclptr : gmtptr;
+	/*
+	** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
+	*/
+	sp = (const struct state *) (((void *) funcp == (void *) 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];
+	for (samei = sp->typecnt - 1; samei >= 0; --samei) {
 		if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
 			continue;
-		for (otherind = 0; otherind < nseen; ++otherind) {
-			otheri = types[otherind];
+		for (otheri = sp->typecnt - 1; otheri >= 0; --otheri) {
 			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);
+			t = time2(tmp, funcp, offset, &okay);
 			if (okay)
 				return t;
 			tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
@@ -2281,25 +1611,19 @@
 	}
 	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;
+	_MUTEX_LOCK(&lcl_mutex);
+	tzset_basic();
+	mktime_return_value = time1(tmp, localsub, 0L);
+	_MUTEX_UNLOCK(&lcl_mutex);
 	return(mktime_return_value);
 }
 
-#if !BUILDING_VARIANT
 #ifdef STD_INSPIRED
 
 time_t
@@ -2315,7 +1639,7 @@
 struct tm * const	tmp;
 {
 	tmp->tm_isdst = 0;
-	return time1(tmp, gmtsub, 0L, __DARWIN_UNIX03);
+	return time1(tmp, gmtsub, 0L);
 }
 
 time_t
@@ -2324,7 +1648,7 @@
 const long		offset;
 {
 	tmp->tm_isdst = 0;
-	return time1(tmp, gmtsub, offset, __DARWIN_UNIX03);
+	return time1(tmp, gmtsub, offset);
 }
 
 #endif /* defined STD_INSPIRED */
@@ -2357,7 +1681,7 @@
 
 /*
 ** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
-** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
+** shall correspond to "Wed Dec 31 23:59:59 GMT 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.
@@ -2424,4 +1748,3 @@
 }
 
 #endif /* defined STD_INSPIRED */
-#endif /* !BUILDING_VARIANT */