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-rw-r--r--libc/misc/time/time.c245
1 files changed, 173 insertions, 72 deletions
diff --git a/libc/misc/time/time.c b/libc/misc/time/time.c
index 8d3cbc3b4..0ae91f69a 100644
--- a/libc/misc/time/time.c
+++ b/libc/misc/time/time.c
@@ -95,9 +95,32 @@
*
* Nov 26, 2002 Fix bug in setting daylight and timezone when no (valid) TZ.
* Bug reported by Arne Bernin <arne@alamut.de> in regards to freeswan.
+ *
+ * July 27, 2003 Adjust the struct tm extension field support.
+ * Change __tm_tzone back to a ptr and add the __tm_tzname[] buffer for
+ * __tm_tzone to point to. This gets around complaints from g++.
+ * Who knows... it might even fix the PPC timezone init problem.
+ *
+ * July 29, 2003 Fix a bug in mktime behavior when tm_isdst was -1.
+ * Bug reported by "Sid Wade" <sid@vivato.net> in regards to busybox.
+ *
+ * NOTE: uClibc mktime behavior is different than glibc's when
+ * the struct tm has tm_isdst == -1 and also had fields outside of
+ * the normal ranges.
+ *
+ * Apparently, glibc examines (at least) tm_sec and guesses the app's
+ * intention of assuming increasing or decreasing time when entering an
+ * ambiguous time period at the dst<->st boundaries.
+ *
+ * The uClibc behavior is to always normalize the struct tm and then
+ * try to determing the dst setting.
+ *
+ * As long as tm_isdst != -1 or the time specifiec by struct tm is
+ * unambiguous (not falling in the dst<->st transition region) both
+ * uClibc and glibc should produce the same result for mktime.
+ *
*/
-
#define _GNU_SOURCE
#define _STDIO_UTILITY
#include <stdio.h>
@@ -112,6 +135,10 @@
#include <langinfo.h>
#include <locale.h>
+#ifdef __UCLIBC_HAS_XLOCALE__
+#include <xlocale.h>
+#endif
+
#ifndef __isleap
#define __isleap(y) ( !((y) % 4) && ( ((y) % 100) || !((y) % 400) ) )
#endif
@@ -121,27 +148,26 @@
#endif
/**********************************************************************/
-
/* The era code is currently unfinished. */
/* #define ENABLE_ERA_CODE */
-#define __TIME_TZ_FILE
-/* #define __TIME_TZ_FILE_ONCE */
-
-#define __TIME_TZ_OPT_SPEED
-
#define TZ_BUFLEN (2*TZNAME_MAX + 56)
-#ifdef __TIME_TZ_FILE
+#ifdef __UCLIBC_HAS_TZ_FILE__
+
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "paths.h"
/* ":<tzname>+hh:mm:ss<tzname>+hh:mm:ss,Mmm.w.d/hh:mm:ss,Mmm.w.d/hh:mm:ss" + nul */
/* 1 + 2*(1+TZNAME_MAX+1 + 9 + 7 + 9) + 1 = 2*TZNAME_MAX + 56 */
-#else /* __TIME_TZ_FILE */
-#undef __TIME_TZ_FILE_ONCE
-#endif /* __TIME_TZ_FILE */
+
+#else /* __UCLIBC_HAS_TZ_FILE__ */
+
+/* Probably no longer needed. */
+#undef __UCLIBC_HAS_TZ_FILE_READ_MANY__
+
+#endif /* __UCLIBC_HAS_TZ_FILE__ */
/**********************************************************************/
@@ -592,7 +618,8 @@ struct tm *localtime_r(register const time_t *__restrict timer,
result->tm_isdst = dst;
#ifdef __UCLIBC_HAS_TM_EXTENSIONS__
result->tm_gmtoff = - _time_tzinfo[dst].gmt_offset;
- strcpy( (char *)(result->tm_zone), _time_tzinfo[dst].tzname);
+ result->tm_zone = result->__tm_tzname;
+ strcpy(result->__tm_tzname, _time_tzinfo[dst].tzname);
#endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */
} while ((++dst < 2) && (result->tm_isdst = tm_isdst(result)) != 0);
@@ -617,7 +644,18 @@ time_t mktime(struct tm *timeptr)
#endif
/**********************************************************************/
-#ifdef L_strftime
+#if defined(L_strftime) || defined(L_strftime_l)
+
+#if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
+
+size_t strftime(char *__restrict s, size_t maxsize,
+ const char *__restrict format,
+ const struct tm *__restrict timeptr)
+{
+ return strftime_l(s, maxsize, format, timeptr, __UCLIBC_CURLOCALE);
+}
+
+#else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
#define NO_E_MOD 0x80
#define NO_O_MOD 0x40
@@ -811,9 +849,13 @@ static int load_field(int k, const struct tm *__restrict timeptr)
#define MAX_PUSH 4
-size_t strftime(char *__restrict s, size_t maxsize,
- const char *__restrict format,
- const struct tm *__restrict timeptr)
+#ifdef __UCLIBC_MJN3_ONLY__
+#warning TODO: Check multibyte format string validity.
+#endif
+
+size_t __XL(strftime)(char *__restrict s, size_t maxsize,
+ const char *__restrict format,
+ const struct tm *__restrict timeptr __LOCALE_PARAM )
{
long tzo;
register const char *p;
@@ -882,16 +924,19 @@ size_t strftime(char *__restrict s, size_t maxsize,
+ (code & 7);
#ifdef ENABLE_ERA_CODE
if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */
- && (*(o = nl_langinfo(_NL_ITEM(LC_TIME,
- (int)(((unsigned char *)p)[4]))
+ && (*(o = __XL(nl_langinfo)(_NL_ITEM(LC_TIME,
+ (int)(((unsigned char *)p)[4]))
+ __LOCALE_ARG
)))
) {
p = o;
goto LOOP;
}
#endif
- p = nl_langinfo(_NL_ITEM(LC_TIME,
- (int)(*((unsigned char *)p))));
+ p = __XL(nl_langinfo)(_NL_ITEM(LC_TIME,
+ (int)(*((unsigned char *)p)))
+ __LOCALE_ARG
+ );
goto LOOP;
}
@@ -1037,7 +1082,7 @@ size_t strftime(char *__restrict s, size_t maxsize,
if ((code & MASK_SPEC) == STRING_SPEC) {
o_count = SIZE_MAX;
field_val += spec[STRINGS_NL_ITEM_START + (code & 0xf)];
- o = nl_langinfo(_NL_ITEM(LC_TIME, field_val));
+ o = __XL(nl_langinfo)(_NL_ITEM(LC_TIME, field_val) __LOCALE_ARG );
} else {
o_count = ((i >> 1) & 3) + 1;
o = buf + o_count;
@@ -1061,9 +1106,31 @@ size_t strftime(char *__restrict s, size_t maxsize,
goto LOOP;
}
+#endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
+
#endif
/**********************************************************************/
-#ifdef L_strptime
+#if defined(L_strptime) || defined(L_strptime_l)
+
+#if defined(L_strptime) || defined(L_strptime_l)
+#define ISDIGIT(C) __isdigit_char((C))
+#endif
+
+#ifdef __UCLIBC_DO_XLOCALE
+#define ISSPACE(C) isspace_l((C), locale_arg)
+#else
+#define ISSPACE(C) isspace((C))
+#endif
+
+#if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE)
+
+char *strptime(const char *__restrict buf, const char *__restrict format,
+ struct tm *__restrict tm)
+{
+ return strptime_l(buf, format, tm, __UCLIBC_CURLOCALE);
+}
+
+#else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
/* TODO:
* 1) %l and %k are space-padded, so "%l" by itself fails while " %l" succeeds.
@@ -1207,8 +1274,8 @@ static const unsigned char spec[] = {
#define MAX_PUSH 4
-char *strptime(const char *__restrict buf, const char *__restrict format,
- struct tm *__restrict tm)
+char *__XL(strptime)(const char *__restrict buf, const char *__restrict format,
+ struct tm *__restrict tm __LOCALE_PARAM)
{
register const char *p;
char *o;
@@ -1273,16 +1340,18 @@ char *strptime(const char *__restrict buf, const char *__restrict format,
+ (code & 7);
#ifdef ENABLE_ERA_CODE
if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */
- && (*(o = nl_langinfo(_NL_ITEM(LC_TIME,
- (int)(((unsigned char *)p)[4]))
- )))
+ && (*(o = __XL(nl_langinfo)(_NL_ITEM(LC_TIME,
+ (int)(((unsigned char *)p)[4]))
+ __LOCALE_ARG
+ )))
) {
p = o;
goto LOOP;
}
#endif
- p = nl_langinfo(_NL_ITEM(LC_TIME,
- (int)(*((unsigned char *)p))));
+ p = __XL(nl_langinfo)(_NL_ITEM(LC_TIME,
+ (int)(*((unsigned char *)p)))
+ __LOCALE_ARG );
goto LOOP;
}
@@ -1295,9 +1364,9 @@ char *strptime(const char *__restrict buf, const char *__restrict format,
/* Go backwards to check full names before abreviations. */
do {
--j;
- o = nl_langinfo(i+j);
- if (!strncasecmp(buf,o,strlen(o)) && *o) { /* Found a match. */
- do {
+ o = __XL(nl_langinfo)(i+j __LOCALE_ARG);
+ if (!__XL(strncasecmp)(buf,o,strlen(o) __LOCALE_ARG) && *o) {
+ do { /* Found a match. */
++buf;
} while (*++o);
if (!code) { /* am/pm */
@@ -1322,11 +1391,11 @@ char *strptime(const char *__restrict buf, const char *__restrict format,
o = (char *) buf;
i = errno;
__set_errno(0);
- if (!isspace(*buf)) { /* Signal an error if whitespace. */
+ if (!ISSPACE(*buf)) { /* Signal an error if whitespace. */
#ifdef TIME_T_IS_UNSIGNED
- t = strtoul(buf, &o, 10);
+ t = __XL(strtoul)(buf, &o, 10 __LOCALE_ARG);
#else
- t = strtol(buf, &o, 10);
+ t = __XL(strtol)(buf, &o, 10 __LOCALE_ARG);
#endif
}
if ((o == buf) || errno) { /* Not a number or overflow. */
@@ -1356,7 +1425,7 @@ char *strptime(const char *__restrict buf, const char *__restrict format,
j = ((j==1) ? 366 : 9999);
}
i = -1;
- while (isdigit(*buf)) {
+ while (ISDIGIT(*buf)) {
if (i < 0) {
i = 0;
}
@@ -1401,9 +1470,9 @@ char *strptime(const char *__restrict buf, const char *__restrict format,
}
}
goto LOOP;
- } else if (isspace(*p)) {
+ } else if (ISSPACE(*p)) {
++p;
- while (isspace(*buf)) {
+ while (ISSPACE(*buf)) {
++buf;
}
goto LOOP;
@@ -1413,6 +1482,8 @@ char *strptime(const char *__restrict buf, const char *__restrict format,
return NULL;
}
+#endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */
+
#endif
/**********************************************************************/
#ifdef L_time
@@ -1478,10 +1549,10 @@ static const char *getoffset(register const char *e, long *pn)
f = -1;
do {
++s;
- if (isdigit(*e)) {
+ if (__isdigit_char(*e)) {
f = *e++ - '0';
}
- if (isdigit(*e)) {
+ if (__isdigit_char(*e)) {
f = 10 * f + (*e++ - '0');
}
if (((unsigned int)f) >= *s) {
@@ -1507,7 +1578,7 @@ static const char *getnumber(register const char *e, int *pn)
int f;
f = 0;
- while (n && isdigit(*e)) {
+ while (n && __isdigit_char(*e)) {
f = 10 * f + (*e++ - '0');
--n;
}
@@ -1519,7 +1590,7 @@ static const char *getnumber(register const char *e, int *pn)
n = 3;
f = 0;
- while (n && isdigit(*e)) {
+ while (n && __isdigit_char(*e)) {
f = 10 * f + (*e++ - '0');
--n;
}
@@ -1529,11 +1600,16 @@ static const char *getnumber(register const char *e, int *pn)
#endif /* __BCC__ */
}
-#ifdef __TIME_TZ_FILE
-#ifdef __TIME_TZ_FILE_ONCE
+#ifdef __UCLIBC_MJN3_ONLY__
+#warning CONSIDER: Should we preserve errno from open/read/close errors re TZ file?
+#endif
+
+#ifdef __UCLIBC_HAS_TZ_FILE__
+
+#ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__
static int TZ_file_read; /* Let BSS initialization set this to 0. */
-#endif /* __TIME_TZ_FILE_ONCE */
+#endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */
static char *read_TZ_file(char *buf)
{
@@ -1542,7 +1618,7 @@ static char *read_TZ_file(char *buf)
size_t todo;
char *p = NULL;
- if ((fd = open("/etc/TZ", O_RDONLY)) >= 0) {
+ if ((fd = open(__UCLIBC_TZ_FILE_PATH__, O_RDONLY)) >= 0) {
todo = TZ_BUFLEN;
p = buf;
do {
@@ -1559,9 +1635,9 @@ static char *read_TZ_file(char *buf)
if ((p > buf) && (p[-1] == '\n')) { /* Must end with newline. */
p[-1] = 0;
p = buf;
-#ifdef __TIME_TZ_FILE_ONCE
+#ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__
++TZ_file_read;
-#endif /* __TIME_TZ_FILE_ONCE */
+#endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */
} else {
ERROR:
p = NULL;
@@ -1571,7 +1647,7 @@ static char *read_TZ_file(char *buf)
return p;
}
-#endif /* __TIME_TZ_FILE */
+#endif /* __UCLIBC_HAS_TZ_FILE__ */
void tzset(void)
{
@@ -1582,18 +1658,18 @@ void tzset(void)
rule_struct new_rules[2];
int n, count, f;
char c;
-#ifdef __TIME_TZ_FILE
+#ifdef __UCLIBC_HAS_TZ_FILE__
char buf[TZ_BUFLEN];
-#endif /* __TIME_TZ_FILE */
-#ifdef __TIME_TZ_OPT_SPEED
+#endif /* __UCLIBC_HAS_TZ_FILE__ */
+#ifdef __UCLIBC_HAS_TZ_CACHING__
static char oldval[TZ_BUFLEN]; /* BSS-zero'd. */
-#endif /* __TIME_TZ_OPT_SPEED */
+#endif /* __UCLIBC_HAS_TZ_CACHING__ */
TZLOCK;
e = getenv(TZ); /* TZ env var always takes precedence. */
-#ifdef __TIME_TZ_FILE_ONCE
+#if defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__)
/* Put this inside the lock to prevent the possiblity of two different
* timezones being used in a threaded app. */
@@ -1602,7 +1678,7 @@ void tzset(void)
} else if (TZ_file_read > 0) {
goto FAST_DONE;
}
-#endif /* __TIME_TZ_FILE_ONCE */
+#endif /* defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__) */
/* Warning!!! Since uClibc doesn't do lib locking, the following is
* potentially unsafe in a multi-threaded program since it is remotely
@@ -1610,14 +1686,14 @@ void tzset(void)
* the string being parsed. So, don't do that... */
if ((!e /* TZ env var not set... */
-#ifdef __TIME_TZ_FILE
+#ifdef __UCLIBC_HAS_TZ_FILE__
&& !(e = read_TZ_file(buf)) /* and no file or invalid file */
-#endif /* __TIME_TZ_FILE */
+#endif /* __UCLIBC_HAS_TZ_FILE__ */
) || !*e) { /* or set to empty string. */
ILLEGAL: /* TODO: Clean up the following... */
-#ifdef __TIME_TZ_OPT_SPEED
+#ifdef __UCLIBC_HAS_TZ_CACHING__
*oldval = 0; /* Set oldval to an empty string. */
-#endif /* __TIME_TZ_OPT_SPEED */
+#endif /* __UCLIBC_HAS_TZ_CACHING__ */
s = _time_tzinfo[0].tzname;
*s = 'U';
*++s = 'T';
@@ -1632,7 +1708,7 @@ void tzset(void)
++e;
}
-#ifdef __TIME_TZ_OPT_SPEED
+#ifdef __UCLIBC_HAS_TZ_CACHING__
if (strcmp(e, oldval) == 0) { /* Same string as last time... */
goto FAST_DONE; /* So nothing to do. */
}
@@ -1640,7 +1716,7 @@ void tzset(void)
* it is too long, but it that case it will be illegal and will be reset
* to the empty string anyway. */
strncpy(oldval, e, TZ_BUFLEN);
-#endif /* __TIME_TZ_OPT_SPEED */
+#endif /* __UCLIBC_HAS_TZ_CACHING__ */
count = 0;
new_rules[1].tzname[0] = 0;
@@ -1675,7 +1751,7 @@ void tzset(void)
/* Get offset */
s = (char *) e;
if ((*e != '-') && (*e != '+')) {
- if (count && !isdigit(*e)) {
+ if (count && !__isdigit_char(*e)) {
off -= 3600; /* Default to 1 hour ahead of std. */
goto SKIP_OFFSET;
}
@@ -1938,8 +2014,9 @@ struct tm *_time_t2tm(const time_t *__restrict timer,
p[4] = 0; /* result[8] .. tm_isdst */
#ifdef __UCLIBC_HAS_TM_EXTENSIONS__
result->tm_gmtoff = 0;
+ result->tm_zone = result->__tm_tzname;
{
- register char *s = (char *) result->tm_zone;
+ register char *s = result->__tm_tzname;
*s = 'U';
*++s = 'T';
*++s = 'C';
@@ -1977,12 +2054,16 @@ time_t _time_mktime(struct tm *timeptr, int store_on_success)
/* 0:sec 1:min 2:hour 3:mday 4:mon 5:year 6:wday 7:yday 8:isdst */
register int *p = (int *) &x;
register const unsigned char *s;
- int d;
+ int d, default_dst;
tzset();
memcpy(p, timeptr, sizeof(struct tm));
+ if ((default_dst = p[8]) < 0) {
+ default_dst = 1; /* Assume advancing */
+ }
+
d = 400;
p[5] = (p[5] - ((p[6] = p[5]/d) * d)) + (p[7] = p[4]/12);
if ((p[4] -= 12 * p[7]) < 0) {
@@ -2007,49 +2088,69 @@ time_t _time_mktime(struct tm *timeptr, int store_on_success)
--d;
}
+ TZLOCK;
+
#ifdef __BCC__
d = p[5] - 1;
days = -719163L + ((long)d)*365 + ((d/4) - (d/100) + (d/400) + p[3] + p[7]);
secs = p[0] + 60*( p[1] + 60*((long)(p[2])) )
- + _time_tzinfo[timeptr->tm_isdst > 0].gmt_offset;
+ + _time_tzinfo[default_dst].gmt_offset;
+ DST_CORRECT:
if (secs < 0) {
secs += 120009600L;
days -= 1389;
}
if ( ((unsigned long)(days + secs/86400L)) > 49710L) {
- return -1;
+ t = ((time_t)(-1));
+ goto DONE;
}
secs += (days * 86400L);
#else
- TZLOCK;
d = p[5] - 1;
d = -719163L + d*365 + (d/4) - (d/100) + (d/400);
secs = p[0]
- + _time_tzinfo[timeptr->tm_isdst > 0].gmt_offset
+ + _time_tzinfo[default_dst].gmt_offset
+ 60*( p[1]
+ 60*(p[2]
+ 24*(((146073L * ((long long)(p[6])) + d)
+ p[3]) + p[7])));
- TZUNLOCK;
+
+ DST_CORRECT:
if (((unsigned long long)(secs - LONG_MIN))
> (((unsigned long long)LONG_MAX) - LONG_MIN)
) {
- return -1;
+ t = ((time_t)(-1));
+ goto DONE;
}
#endif
+ d = ((struct tm *)p)->tm_isdst;
t = secs;
localtime_r(&t, (struct tm *)p);
- if (t < 0) {
- return -1;
+ if (t == ((time_t)(-1))) { /* Remember, time_t can be unsigned. */
+ goto DONE;
+ }
+
+ if ((d < 0) && (((struct tm *)p)->tm_isdst != default_dst)) {
+#ifdef __BCC__
+ secs -= (days * 86400L);
+#endif
+ secs += (_time_tzinfo[1-default_dst].gmt_offset
+ - _time_tzinfo[default_dst].gmt_offset);
+ goto DST_CORRECT;
}
+
if (store_on_success) {
memcpy(timeptr, p, sizeof(struct tm));
}
+
+ DONE:
+ TZUNLOCK;
+
return t;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 19:20:18 +0000