Bump tzcode from 2016g to 2022a*.
Upstream has renamed tzsetlcl to tzset_unlocked. As bionic's
implementation of tzset_unlock differs from upstream, these changes were
skipped.
Also, upstream has removed constants (SECSPERMIN, etc) from tzfile.h. As
they are used in strptime.c, I've decided to leave them in tzfile.h and
to not bring them into strptime.c.
HAVE_TZNAME and USG_COMPAT flags semantics were updated, thus setting
their values to 2 in Android.bp file. See
https://github.com/eggert/tz/commit/1a27ec76bc436a64070461bbbf28e0511c7cf3b8
* https://github.com/eggert/tz/commit/4742526b7e8a0f26adaf068c9f5c0bc0870909e7
and https://github.com/eggert/tz/commit/0e8f0b06ac2f65d0c54a91121da09c8662cd88e6
were picked up, which are not part of 2022a.
Changes were applied using following commands:
1) Checkout tzcode repo
2) Prepare patches for all tzcode file using
git diff 2016g 2021e -- <file-name> > <file-name-patch>
3) Apply these patches to files in bionic using
patch -p1 <file-name> <file-name-patch>
Bug: 25413083
Test: CtsLibcoreTestCases
Test: CtsLibcoreOjTestCases
Test: CtsBionicTestCases
Change-Id: I9aba4cbeab30171a32f94d20c8e4057804a4c01f
diff --git a/libc/tzcode/tzfile.h b/libc/tzcode/tzfile.h
index ebecd68..c5f9967 100644
--- a/libc/tzcode/tzfile.h
+++ b/libc/tzcode/tzfile.h
@@ -1,3 +1,5 @@
+/* Layout and location of TZif files. */
+
#ifndef TZFILE_H
#define TZFILE_H
@@ -20,17 +22,20 @@
*/
#ifndef TZDIR
-#define TZDIR "/usr/local/etc/zoneinfo" /* Time zone object file directory */
+#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
#endif /* !defined TZDIR */
#ifndef TZDEFAULT
-#define TZDEFAULT "localtime"
+#define TZDEFAULT "/etc/localtime"
#endif /* !defined TZDEFAULT */
#ifndef TZDEFRULES
#define TZDEFRULES "posixrules"
#endif /* !defined TZDEFRULES */
+
+/* See Internet RFC 8536 for more details about the following format. */
+
/*
** Each file begins with. . .
*/
@@ -39,9 +44,9 @@
struct tzhead {
char tzh_magic[4]; /* TZ_MAGIC */
- char tzh_version[1]; /* '\0' or '2' or '3' as of 2013 */
+ char tzh_version[1]; /* '\0' or '2'-'4' as of 2021 */
char tzh_reserved[15]; /* reserved; must be zero */
- char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
+ char tzh_ttisutcnt[4]; /* coded number of trans. time flags */
char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
char tzh_leapcnt[4]; /* coded number of leap seconds */
char tzh_timecnt[4]; /* coded number of transition times */
@@ -64,14 +69,15 @@
** one (char [4]) total correction after above
** tzh_ttisstdcnt (char)s indexed by type; if 1, transition
** time is standard time, if 0,
-** transition time is wall clock time
-** if absent, transition times are
-** assumed to be wall clock time
-** tzh_ttisgmtcnt (char)s indexed by type; if 1, transition
-** time is UT, if 0,
-** transition time is local time
-** if absent, transition times are
+** transition time is local (wall clock)
+** time; if absent, transition times are
** assumed to be local time
+** tzh_ttisutcnt (char)s indexed by type; if 1, transition
+** time is UT, if 0, transition time is
+** local time; if absent, transition
+** times are assumed to be local time.
+** When this is 1, the corresponding
+** std/wall indicator must also be 1.
*/
/*