offset. cgpxlogger introduced.  Upgrade gpxlogger to DBUS 0.60  conformance.  Jason von Nieda's patch may fix the chronic TSIP  driver problems.* Wed Sep 14 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.30-1- Prevent core dump on -d option.  The .log extension is no longer required for  test loads.  cgps and xgps now have configurable latitude/longitude formats   via the -l option.  Introduced new 'g' command that allows clients to  specify whether they want GPS or RTCM104 information.* Fri Aug 19 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.29-1- Added Sony CXD2951 support, untested.  All error estimates are  now nailed to 95% confidence interval.  Added rtcmdecode and its  documentation; also, gpsd can now monitor serial devices emitting   RTCM104 and display differential-GPS data in a readable format.    Added dangerous alpha version of gpsflash.  Work around a nasty bug   in SiRFStar III firmware version < 3.1.1.  Added support for True   North Technologies Revolution 2X Digital compass.  Added the   gpxlogger client for systems with DBUS support and the gpspipe   and cgps clients for general use.* Wed Jul  6 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.28-1- The 2.27 source tarball somehow got truncated on upload.  Due to procedural mechanics at berlios.de, shipping a new release  seems to be the least painful way to recover.  This release is  identical to 2.27 except the roadmap stuff has been added to TODO.* Wed Jul 06 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.27- Arrange for the daemon to remove its pid file on exit.  Fix some  buffering problems with the Python side of the hotplug interface.  gpsfake can now run sessions under a monitor like Valgrind.  Most  of the gpsfake logic now lives in a module that can be used to write  other test loads; its progress baton is now optional.  Fixed  some minor bugs found by valgrind audit, including (1) a slow  memory leak, (2) a possible but unconfirmed file-descriptor leak,   and (3) a subtle error in the channel-assignment logic that only  showed up with multiple sessions active.  In fact, the daemon code  no longer uses dynamic-memory allocation at all.  Also, the code  no longer relies on FIONREAD working.  The track error field in the  O response is now computed.  The project website has some new eye candy.  Client connections now time out when the mode is neither raw nor watcher.  Fixed a core-dump that could happen if C, B or I commands were issued  at odd times.* Wed Jun 22 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.26- Time DOP and total DOP are now passed on from GPSes that report   them.  Ensure longitude has a leading zero when <100, for  compatibility with gpsdrive.  Synchronous and thread hooks are now  separate in the client library.  Packet-sniffing on a new device no  longer holds up incoming data on already-connected ones.  There is  now a super-raw mode (R=2) that dumps a hex-encoding of every binary  packet received to the client; sirfmon uses it to operate through  the daemon if one is running.  Support for Trimble TSIP GPSes  merged. gpsfake now works with SiRF and Zodiac logs.  Python library  supports thread callbacks.  New -p option of gpsfake supports  regression testing of the daemon, and there is a test suite included  with the distribution.  PPS support is turned off, as there is some  pthreads problem that sometimes kills the daemon on pthreads exit.  Correct off-by-one error in GPZDA processing.  The code has been  audited and cleaned with splint (www.splint.org).* Sat May 21 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.25-1- Various signedness and scaling fixes and an OpenBSD port patch for the   Zodiac driver. Command-line arguments to gpsd are now treated as a default   device list; -f is still supported but deprecated.  sirfmon now tries not  changing the line speed first, so it syncs up much faster.  Prevent a   potential buffer overrun in the client library.  PPS-thread support is now  on by default.  Lots of documentation improvements. D-BUS broadcast support   by Amaury Jacquot.  Added Alfredo Pironti's thread-callback and C++  support.  gpsd no longer uses the system clock for anything, so it  can be used to set that clock.* Tue May 17 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.24-1- Crazy-speed bug is finally fixed. Autobauding now starts with the  current speed of the device, not the stored gpsd speed; this means  hunting only takes place when device and GPS speed aren't matched.    xgpsspeed unit-conversion bug introduced in 2.22 is fixed.  Satellite  display now really shows 12 channels, not just 11. Major improvements   in ntp notifications.* Wed May  4 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.23-1- For better security, the daemon now drops root privileges after startup.  gpsd-clients is now a separate RPM; this is helpful on lean systems  that don't run X.  The O command now reports speeds in meters per second   rather than knots, client code has been adjusted so there is no user-visible  change.  We now compute the missing components of DOP when using SiRF chips.  /dev/gps is no longer special; there is no default GPS device unless you  specify one.  The intermittent processor-hogging problem introduced by the  control-channel change in 2.21 has been solved.* Mon Apr 25 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.22-1- SiRF-binary driver can now get leap-second corrections from subframe data.  Device add/delete commands now send back OK or ERROR.  Error-modeling  corrections from the SiRF folks.  Higher precision in position reports.* Tue Apr 12 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.21-1- Add tag and timestamp to Y response.  Use computed geoid separation as   SiRF packet 42 is flaky.  Security fix: hotplug scripts now do device  add/removes through a separate local control channel.  True multi-device  support is in place.  When in watcher mode, device switches are announced.* Thu Mar 31 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.20-1- Rob Janssen's patches to fix timezone issues and improve cooperation  with NTP.  License changed to BSD so linking to libgps won't make people   nervous.  gpsprobe and gpsd.py are obsolete and have been removed, the   autoprobe and profiling capabilities in the daemon more than replace   them.  gpsprof now ships self-contained GNUPLOT scripts to stdout,  so they can be saved and redisplayed.  Zodiac sort of works again, but   occasionally spins madly during autobauding.* Sat Mar 26 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.19-1- Fix brown-paper-bag bug with NMEA parsing. Set SiRF GPSes to use  SBAS.  sirfmon now displays SBAS parameters, and is included in the  installed programs.  Add to FAQ a fix for spurious high speeds reported  in XTrac mode.  We now interpret GPZDA.  We no longer fudge a missing   ddmmyy in NMEA timestamps from the system clock, so replay will work better.* Wed Mar 23 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.18-1- First cut at cooperating with NTP.  Major library restructuring;   a fix is now a data structure of its own, and per-field timestamps   are gone. Use new 'o' command for watcher mode.  Compute some estimated   error bounds.* Wed Mar 16 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.17- Fix packet-engine problem that made disconnect/reconnect unreliable  (important!).  Fix bonehead error in interpretation of PGRME.  We   don't use O_SYNC (it turned out not to be reliable) so remove it to make   life easier under Mac OS X.  Allow gpsfake to accept subsecond cycle times.  Add a FAQ to the HTML documentation.  gps_poll() now handles multi-line  responses.  Add N command for switching driver modes.* Fri Mar 11 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.16-1- New F command allows changing the GPS device after startup time.  Hotplug scripts to go with it are now installed by the RPM.  The  Garmin probe is working.  The -T and -s options are gone.  We have   achieved zero configuration!* Wed Mar 02 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.15-1- A new packet engine autobauds much more quickly, and now iterates  over both 1 and 2 stopbits. Explicit support for FV18 (the -T f  option) is gone; instead, gpsd syncs with any 7N2 device and always  ships a suitable init string.  New E command, supporting the Garmin  position-error sentence or computing these numbers from DOP and an  error model. New U command reports climb/sink from GPSes that report  vertical velocity.  There is a prototype driver for SiRF-binary GPses,  invoked automatically when SiRF packets present themselves on the  wire after device open.* Fri Feb 25 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.14-1- Pass zero magnetic variation in generated NMEA from binary GPSes  correctly.  Use O_SYNC rather than timeouts to guarantee that   baud-rate change strings get to the GPS before changing the line  parameters.  Introduced I command.  Spatial scattergram plotting  moved from gpsprobe to gpsprof.* Mon Feb 21 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.13-1- Correct a bug in binary-protocol dumping (applies to Zodiac and  Garmin only).  Gary Miller's patch to deal gracefully with GPSes  like the Magellan EC10X that send only GPRMC and never GPGGA or  GPGSA, and thus never set mode or status fields.  Fixed buggy  handling of units options in xgps and xgpsspeed.  Bumped library  major version, since seen_sentences is now exposed and drivers have  more capabilities.  Stricter NMEA buffer validation.  Withdrew the  change that always passed up a timestamp; on SiRF receivers, the year  part is garbage when the PVT fields are garbage.  Can now recognize  SiRF GPSes.  Experimental baud-switching support for Zodiac.* Tue Feb 15 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.12-1- Fixed core-dump bug in processing of the GLL variant that does not  include an FAA Mode Indicator. When using the NMEA driver, gpsd now  hunts for a baud rate rather than requiring a fixed one to be set.  A new 'B' command returns the RS232 parameters, and a new 'C'  command returns the update cycle time.  Added gpsfake test harness.  Alpha driver for Garmin binary protocol added, requires Linux  garmin_usb kernel driver.  The daemon now always passes up a  timestamp for every sentence that has one, even if the PVT fields  aren't valid.* Thu Feb 10 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.11-1- Added gpsprof and the capability to generate GPS latency profiles.  gpsprobe now hunts through plausible baud rates when looking for NMEA  data from a GPS. The -b (baudrate) option fixes a speed, disabling  the baud-matching logic.  Also, gpsprobe can now recognize SiRF   protocol, though not speak it.  Fixed a math domain error in   gps.EarthDistance due to numeric blowup on points very close together,  and another in gps.MeterOffset() that was screwing up gpsprobe plots.* Tue Feb  1 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.10- Add -N option to explicitly foreground the daemon.  Fixed a bug  that was causing gpsd to keep reopening the GPS device after  leaving raw or watcher mode.  Fixed Gary Miller's core-dump bug.* Thu Jan 27 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.9-1- Python files restored to RPM.* Thu Jan 27 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.8-1- Embarrassing typo fix in gps.py. Avoid buffer overrun in xgps.c.  Plug Debian security bug 292347, CVE number CAN-2004-1388.    This version issued on an emergency basis without Python libraries,   which have packaging problems due to the 2.3/2.4 transition.* Fri Jan  14 2005 Eric S. Raymond <esr@snark.thyrsus.com> - 2.7-1- More compiler-warning cleanups.  gps client name changed to xgps.  Added --speedunits option to xgpsspeed, --speedunits and --altunits  options to xgps.  Improved GPGSV parsing so it copes gracefully if  we start in the middle of a sequence.  Merged Petter Reinholdtsen's  fix for GPGSA lists with holes.  In xgps, satellites used in the  last fix are now dotted in the middle.  New -P option to create  pidfile.  Audited for potential buffer overruns, found and fixed  two.