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authorPeter Wemm <peter@FreeBSD.org>1995-12-30 19:02:48 +0000
committerPeter Wemm <peter@FreeBSD.org>1995-12-30 19:02:48 +0000
commit5d9a77686cc42fd6071322f14b7d3d5a7bdb9b11 (patch)
treeec3f7da41df0bbda6880d33956455b26f48e796a /usr.sbin/xntpd/hints/aux
parentdaa35edbd086b27357d8f048ede7c84dcc520748 (diff)
downloadsrc-vendor/ntpd.tar.gz
src-vendor/ntpd.zip
Notes
Diffstat (limited to 'usr.sbin/xntpd/hints/aux')
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diff --git a/usr.sbin/xntpd/hints/aux b/usr.sbin/xntpd/hints/aux
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--- a/usr.sbin/xntpd/hints/aux
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@@ -1,159 +0,0 @@
-Last revision: 09-Aug-1993
-
-Included in this distribution of XNTP V3 is a configuration file suitable
-for use under Apple's A/UX Version 3.0.x While it may work with
-other versions, it has not been tested. To make the executables follow
-the steps outlined below.
-
-*** NOTE: You must have gcc installed to successfully compile the current
-distribution; the native cc supplied with A/UX will NOT correctly compile
-this source. See the FAQ in comp.unix.aux for places to obtain gcc from
-and how to install it.
-
-Now, you need to create the makefiles:
-
- % make refconf
-
-First of all, you need to edit Config.local to make sure that BINDIR is
-correct for where you wish the programs to be "installed". The default
-(and what I use) is /usr/local/etc. Make sure that DEFS_LOCAL and
-CLOCKDEFS are commented out!
-
-
-After this is done (you should be told that your system is A/UX 3), make
-xntpd (the options to 'gcc' are held in compilers/aux3.gcc):
-
- % make
-
-I do not normally use the `make install' option and so have not verified its
-compatibility with A/UX. Rather, I pull out each of the executables and
-place them in the locally appropriate locations.
-
-At this point you need to set things up so that 'xntpd' is started upon
-boot-up. You can do this in 1 of 2 ways: either add entries in /etc/inittab
-or create and use an /etc/rc.local file.
-
-By default, A/UX doesn't have one, so you'll need to add the following to
-/etc/inittab:
-
- net6:2:wait:/etc/syslogd # set to "wait" to run a syslog daemon
-+ jmj0:2:wait:/etc/rc.local 1>/dev/syscon 2>&1 # Local stuff
- dbg2::wait:/etc/telinit v # turn off init's verbose mode
-
-Now, the look of /etc/rc.local is as follows:
-
- #!/bin/sh
- :
- : rc.local
- :
- # @(#)Copyright Apple Computer 1987 Version 1.17 of rc.sh on 91/11/08 15:56:21 (ATT 1.12)
-
-
- # Push line discipline/set the device so it will print
- /etc/line_sane 1
- echo " "
- echo "Entering rc.local..."
-
- set `/bin/who -r`
- if [ "$7" = 2 ]
- then
- /bin/echo " now setting the time..."
- /usr/local/etc/ntpdate -s -b <host.domain>
- sleep 5
- #
- # start up xntpd if we want
- #
- if [ -f /etc/ntp.conf ]
- then
- /bin/echo " setting tick and tickadj..."
- /usr/local/etc/tickadj -t 16672 -a 54
- sleep 5
- /bin/echo " starting xntpd..."
- /usr/local/etc/xntpd <&- > /dev/null 2>&1
- sleep 5
- fi
- #
- fi
-
- echo "Leaving rc.local..."
-
-There are a few things to notice about the above:
-
- o When run, 'ntpdate' forces your clock to the time returned by the
- host(s) specified by <host.domain> (you'll need to replace this
- be the IP address(es) of your timehosts. This is good since it gets
- things close to start off with.
-
- o 'tickadj' is also called. This does two things: changes the
- default value of 'tick' (which the the amount of time, in ms, that
- is added to the clock every 1/60 seconds) and changes the value
- of 'tickadj' which the the amount that is added or subtracted
- from 'tickadj' when adjtime() is called.
-
- Now Mac clocks are pretty bad and tend to be slow. Sooo, instead of
- having A/UX add the default of 16666ms every 1/60th of a second,
- you want it to add more so that it keeps better time. The above
- value works for me but your "best" value may be different and will
- likely require some fooling around to find the best value.
-
- A/UX's default value of 'tickadj' is 1666 which is too big for
- 'xntpd'... so it also needs to be adjusted.
-
-
-Finally, before A/UX and 'xntpd' will work happily together, you need to
-patch the kernel. This is due to the fact that A/UX attempts to keep the
-UNIX-software clock and the Mac-hardware clock in sync. Now both of these
-are too good. Also, 'xntpd' will be attempting to adjust the software
-clock as well, so having A/UX muck around with it is asking for headaches.
-What you therefore need to do is tell the kernel _not_ to sync the s/w clock
-with the h/w one. This is done using 'adb'. The following is a shell script
-that will do the patch for you:
-
- #! /bin/sh
- adb -w /unix <<!
- init_time_fix_timeout?4i
- init_time_fix_timeout?w 0x4e75
- init_time_fix_timeout?4i
- $q
- !
-
-This must be done _every_ time you create a new kernel (via newconfig or
-newunix) or else 'xntpd' will go crazy.
-
-John Dundas was the original porter of xntpd and a lot of the additions
-and A/UX-ports are from him. I got involved when I wanted to run 'xntpd'
-on jagubox. It was also around this time that the base-patchlevel of
-'xntpd' changed relatively significantly so John may not be up on this
-version (called the "jones" version).
-
-The original kernel patch (which patched 'time_fix_timeout') was from
-Richard Todd. I suggest patching 'init_time_fix_timeout' which prevents
-'time_fix_timeout' from even being called.
-
-TECHNICAL NOTES:
-
- o As configured (see machines/aux3), 'xntpd' will log messages via syslogd
- using the LOC_LOCAL1 facility. I would suggest the following in
- /etc/syslog.conf:
-
- local1.notice /usr/adm/ntpd-syslog
-
- o As mentioned above, the clocks on A/UX and Macs are kinda bad. Not
- only that, but logging in and out of the MacOS mode as well as
- extensive floppy use causes A/UX to drop and lose clock interupts
- (these are sent every 1/60th of a second). So, if you do these
- activities a lot, you find out that you lose about 300ms of time
- (i.e., you become 300ms slow). 'xntpd' default way of handling this
- is to called 'settimeofday()' and step the clock to the correct
- time. I prefer having 'xntpd' slew the clock back into line by
- making gradual adjustments to the clock over a coupla minutes
- or so. It's for this reason that SLEWALWAYS is defined in
- include/ntp_machine.h for SYS_AUX3.
-
-Good luck! If you have problems under A/UX feel free to contact me (e-mail
-is preferred).
---
- Jim Jagielski | "That is no ordinary rabbit... 'tis the
- jim@jagubox.gsfc.nasa.gov | most foul, cruel and bad-tempered
- NASA/GSFC, Code 734.4 | rodent you ever set eyes on"
- Greenbelt, MD 20771 | Tim the Enchanter