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Sync code with tzcode2010m

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asctime.c:
* Set errno to EINVAL and return "??? ??? ?? ??:??:?? ????\n" if
  asctime_r is called with a NULL struct tm pointer.  (Note that
  asctime_r is called by ctime_r and asctime; asctime is called by
  ctime.)

localtime.c:
* Set errno to EINVAL and return WRONG if time1 is called with a
  NULL struct tm pointer; avoid dereference if a NULL struct tm
  pointer is passed to timelocal, timegm, or timeoff.  (Note that
  time1 is called by mktime, timegm, and timeoff; mktime is called
  by timelocal.)
* more core-avoidance work
* Change to set timezone and altzone based on time types with
  greatest transition times (for the benefit of Asia/Seoul).

zic.8:
* Warning about case-sensitivity of names, but not of abbrevations

zic.c:
* Conditionally output extra types with most-recently-use offsets
  last (for use by systems with pre-2011 versions of localtime.c,
  helping to ensure that globals "altzone and "timezone" get set
  correctly).

The code has been running for nearly four weeks on my laptop running
FreeBSD 8.1 without a problem.

MFC after:	1 month
This commit is contained in:
Edwin Groothuis 2010-10-27 07:14:46 +00:00
parent e96b4de80e
commit f8768d2a1a
4 changed files with 83 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
contrib/tzcode/stdtime/asctime.c
View File

@ -12,7 +12,7 @@
#include <sys/cdefs.h>
#ifndef lint
#ifndef NOID
static char elsieid[] __unused = "@(#)asctime.c 8.2";
static char elsieid[] __unused = "@(#)asctime.c 8.5";
#endif /* !defined NOID */
#endif /* !defined lint */
__FBSDID("$FreeBSD$");
@ -95,6 +95,10 @@ char * buf;
char year[INT_STRLEN_MAXIMUM(int) + 2];
char result[MAX_ASCTIME_BUF_SIZE];
if (timeptr == NULL) {
errno = EINVAL;
return strcpy(buf, "??? ??? ?? ??:??:?? ????\n");
}
if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
wn = "???";
else wn = wday_name[timeptr->tm_wday];
@ -117,10 +121,9 @@ char * buf;
timeptr->tm_mday, timeptr->tm_hour,
timeptr->tm_min, timeptr->tm_sec,
year);
if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime) {
(void) strcpy(buf, result);
return buf;
} else {
if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime)
return strcpy(buf, result);
else {
#ifdef EOVERFLOW
errno = EOVERFLOW;
#else /* !defined EOVERFLOW */

45
contrib/tzcode/stdtime/localtime.c
View File

@ -6,7 +6,7 @@
#include <sys/cdefs.h>
#ifndef lint
#ifndef NOID
static char elsieid[] __unused = "@(#)localtime.c 8.9";
static char elsieid[] __unused = "@(#)localtime.c 8.14";
#endif /* !defined NOID */
#endif /* !defined lint */
__FBSDID("$FreeBSD$");
@ -315,34 +315,26 @@ settzname(void)
return;
}
#endif /* defined ALL_STATE */
/*
** And to get the latest zone names into tzname. . .
*/
for (i = 0; i < sp->typecnt; ++i) {
const struct ttinfo * const ttisp = &sp->ttis[i];
const struct ttinfo * const ttisp = &sp->ttis[sp->types[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)
if (!ttisp->tt_isdst)
timezone = -(ttisp->tt_gmtoff);
#endif /* defined USG_COMPAT */
#ifdef ALTZONE
if (i == 0 || ttisp->tt_isdst)
if (ttisp->tt_isdst)
altzone = -(ttisp->tt_gmtoff);
#endif /* defined ALTZONE */
}
/*
** 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];
}
/*
** Finally, scrub the abbreviations.
** First, replace bogus characters.
*/
@ -395,6 +387,8 @@ register const int doextend;
4 * TZ_MAX_TIMES];
} u;
sp->goback = sp->goahead = FALSE;
/* XXX The following is from OpenBSD, and I'm not sure it is correct */
if (name != NULL && issetugid() != 0)
if ((name[0] == ':' && name[1] == '/') ||
@ -610,7 +604,6 @@ register const int doextend;
sp->ttis[sp->typecnt++] = ts.ttis[1];
}
}
sp->goback = sp->goahead = FALSE;
if (sp->timecnt > 1) {
for (i = 1; i < sp->timecnt; ++i)
if (typesequiv(sp, sp->types[i], sp->types[0]) &&
@ -1221,7 +1214,7 @@ tzsetwall_basic(int rdlocked)
#ifdef ALL_STATE
if (lclptr == NULL) {
lclptr = (struct state *) malloc(sizeof *lclptr);
lclptr = (struct state *) calloc(1, sizeof *lclptr);
if (lclptr == NULL) {
settzname(); /* all we can do */
_RWLOCK_UNLOCK(&lcl_rwlock);
@ -1273,7 +1266,7 @@ tzset_basic(int rdlocked)
#ifdef ALL_STATE
if (lclptr == NULL) {
lclptr = (struct state *) malloc(sizeof *lclptr);
lclptr = (struct state *) calloc(1, sizeof *lclptr);
if (lclptr == NULL) {
settzname(); /* all we can do */
_RWLOCK_UNLOCK(&lcl_rwlock);
@ -1471,7 +1464,7 @@ gmt_init(void)
{
#ifdef ALL_STATE
gmtptr = (struct state *) malloc(sizeof *gmtptr);
gmtptr = (struct state *) calloc(1, sizeof *gmtptr);
if (gmtptr != NULL)
#endif /* defined ALL_STATE */
gmtload(gmtptr);
@ -2054,6 +2047,11 @@ const long offset;
int types[TZ_MAX_TYPES];
int okay;
if (tmp == NULL) {
errno = EINVAL;
return WRONG;
}
if (tmp->tm_isdst > 1)
tmp->tm_isdst = 1;
t = time2(tmp, funcp, offset, &okay);
@ -2129,7 +2127,8 @@ time_t
timelocal(tmp)
struct tm * const tmp;
{
tmp->tm_isdst = -1; /* in case it wasn't initialized */
if (tmp != NULL)
tmp->tm_isdst = -1; /* in case it wasn't initialized */
return mktime(tmp);
}
@ -2137,7 +2136,8 @@ time_t
timegm(tmp)
struct tm * const tmp;
{
tmp->tm_isdst = 0;
if (tmp != NULL)
tmp->tm_isdst = 0;
return time1(tmp, gmtsub, 0L);
}
@ -2146,7 +2146,8 @@ timeoff(tmp, offset)
struct tm * const tmp;
const long offset;
{
tmp->tm_isdst = 0;
if (tmp != NULL)
tmp->tm_isdst = 0;
return time1(tmp, gmtsub, offset);
}

5
contrib/tzcode/zic/zic.8
View File

@ -119,6 +119,9 @@ Any line that is blank (after comment stripping) is ignored.
Non-blank lines are expected to be of one of three types:
rule lines, zone lines, and link lines.
.Pp
Names (such as month names) must be in English and are case insensitive.
Abbreviations, if used, must be unambiguous in context.
.Pp
A rule line has the form:
.Dl "Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S"
For example:
@ -460,6 +463,6 @@ standard directory used for created files
.Xr ctime 3 ,
.Xr tzfile 5 ,
.Xr zdump 8
.\" @(#)zic.8 8.5
.\" @(#)zic.8 8.6
.\" This file is in the public domain, so clarified as of
.\" 2009-05-17 by Arthur David Olson.

49
contrib/tzcode/zic/zic.c
View File

@ -3,7 +3,7 @@
** 2006-07-17 by Arthur David Olson.
*/
static const char elsieid[] = "@(#)zic.c 8.20";
static const char elsieid[] = "@(#)zic.c 8.22";
#ifndef lint
static const char rcsid[] =
@ -1588,6 +1588,53 @@ const char * const string;
if (thistimei == 0)
writetype[0] = TRUE;
}
#ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH
/*
** For some pre-2011 systems: if the last-to-be-written
** standard (or daylight) type has an offset different from the
** most recently used offset,
** append an (unused) copy of the most recently used type
** (to help get global "altzone" and "timezone" variables
** set correctly).
*/
{
register int mrudst, mrustd, hidst, histd, type;
hidst = histd = mrudst = mrustd = -1;
for (i = thistimei; i < thistimelim; ++i)
if (isdsts[types[i]])
mrudst = types[i];
else mrustd = types[i];
for (i = 0; i < typecnt; ++i)
if (writetype[i]) {
if (isdsts[i])
hidst = i;
else histd = i;
}
if (hidst >= 0 && mrudst >= 0 && hidst != mrudst &&
gmtoffs[hidst] != gmtoffs[mrudst]) {
isdsts[mrudst] = -1;
type = addtype(gmtoffs[mrudst],
&chars[abbrinds[mrudst]],
TRUE,
ttisstds[mrudst],
ttisgmts[mrudst]);
isdsts[mrudst] = TRUE;
writetype[type] = TRUE;
}
if (histd >= 0 && mrustd >= 0 && histd != mrustd &&
gmtoffs[histd] != gmtoffs[mrustd]) {
isdsts[mrustd] = -1;
type = addtype(gmtoffs[mrustd],
&chars[abbrinds[mrustd]],
FALSE,
ttisstds[mrustd],
ttisgmts[mrustd]);
isdsts[mrustd] = FALSE;
writetype[type] = TRUE;
}
}
#endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */
thistypecnt = 0;
for (i = 0; i < typecnt; ++i)
typemap[i] = writetype[i] ? thistypecnt++ : -1;