diff options
| author | Eric S. Raymond <esr@thyrsus.com> | 2011-09-04 08:18:27 -0400 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2011-09-04 08:18:27 -0400 |
| commit | 3a12b495877a8bd5d896e96a3fd0386a3d2f3407 (patch) | |
| tree | 4be4796bb4af74335076fa90ca13ea244d50cc96 /TODO | |
| parent | 0fddafeaaeaf99aded6af1ff590a8c8ac26a1c50 (diff) | |
| download | gpsd-3a12b495877a8bd5d896e96a3fd0386a3d2f3407.tar.gz | |
Removed the proposal about timezone setting.
After meditating on the matter, I've concluded that it's not our job
to know about timezones or calendrical nuances. That would be serious
mission creep, and is best left to domain experts in those areas. If
they want to write a client that takes UTC and lat/lon and does the
right magic, good. Our job ends with delivering those inputs.
Diffstat (limited to 'TODO')
| -rw-r--r-- | TODO | 52 |
1 files changed, 0 insertions, 52 deletions
@@ -158,58 +158,6 @@ AsteRx and PolaRx, NovAtel Superstar2 and OEMV, Thales (Magellan Professional) AC12 and DG14 would all be welcome. Of course, these are not $50 USB mice... -*** Set the system time zone from latitude/longitude - -If we're going to give gpsd the capability to set system time via -ntpd, why not let it set timezone as well? A good thing for hackers -travelling with laptops! - -The major issue here is that I have not yet found code, or a -database, that would allow mapping from lon/lat to timezone. -And the rules change from year to year. - -Actually this should be built as a specialized client, as some -people won't want it. - -From <http://www.linuxsa.org.au/tips/time.html>: - - The timezone under Linux is set by a symbolic link from - /etc/localtime[1] to a file in the /usr/share/zoneinfo[2] directory - that corresponds with what timezone you are in. For example, since I'm - in South Australia, /etc/localtime is a symlink to - /usr/share/zoneinfo/Australia/South. To set this link, type: - - ln -sf ../usr/share/zoneinfo/your/zone /etc/localtime - - Replace your/zone with something like Australia/NSW or - Australia/Perth. Have a look in the directories under - /usr/share/zoneinfo to see what timezones are available. - - [1] This assumes that /usr/share/zoneinfo is linked to /etc/localtime as it is under Red Hat Linux. - - [2] On older systems, you'll find that /usr/lib/zoneinfo is used - instead of /usr/share/zoneinfo. - -Changing the hardlink will, of course, update the system timezone for -all users. If I were designing this feature, I'd ensure that the -system timezone can be overridden by a user-set TZ, but I don't know -if it actually works that way. - -If I'm reading the tea leaves correctly, this functionality is actually -embedded in the GCC library version of tzset(), so the same method will -work on any system that uses that. - -Problem: system daemons use the timezone set when they start up. You -can't get them to grok a new one short of rebooting. - -Sources: - -Sources for Time Zone and Daylight Saving Time Data -http://www.twinsun.com/tz/tz-link.htm - -Free time-zone maps of the U.S. -http://www.manifold.net/download/freemaps.html - Local variables: mode: outline paragraph-separate: "[ ]*$" |