Commit Graph

5 Commits

Author SHA1 Message Date
Poul-Henning Kamp
4c3af266f6 Well, cvs commit core'ed on me, I belive I have got all the locks out,
but a commit mail got lost, it's the same as for this commit:

 lib/libc/gen  confstr.c crypt.c disklabel.c fstab.c getcap.c
          getgrent.c  getgrouplist.c getpass.c getpwent.c
          initgroups.c nlist.c  psignal.c pwcache.c setmode.c
          sleep.c sysconf.c sysctl.c  syslog.c usleep.c
 lib/libc/locale  none.c read_runemagi.c setlocale.c
 lib/libc/net  gethostbydns.c getnetbydns.c getnetbynis.c
 lib/libc/nls  msgcat.c
 lib/libc/quad  Makefile.inc
 lib/libc/regex  engine.c regcomp.c regerror.c

	Minor cleanup, mostly unused vars and missing #includes.
	Limit the number of quad functions we pull in for 'i386'.
	I still belive the quad stuff should go back into gcc.
	Add compile-time warnings about crypt functions.
1995-10-22 14:51:39 +00:00
Bill Paul
19f61b3433 Reviewed by: David Greenman
Back out the 'help NIS rebind faster' hack. This change used a
connect()/send() pair rather than the original sendto() to allow
RPC to pass ICMP host unreachable and similar errors up to RPC
programs that use UDP. This is not a terrible thing by itself, but it can
cause trouble in environments with multi-homed hosts: if the portmapper
on the multi-homed machine sends a reply with a source address
that's different than the one associated with the connection by
connect(), the kernel will send a port unreachable message and
drop the reply. For the sake of compatibility with everybody else
on the planet, it's best to revert to the old behavior.

*long, heavy sigh*
1995-08-02 09:14:23 +00:00
Rodney W. Grimes
6c06b4e2aa Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
Bill Paul
f9dde4e78c Submitted by: Sebastian Strollow
Obtained from: Casper H. Dik (by vay of Usenet)

Small patch to help improve NIS rebinding times (among other things):


>From: casper@fwi.uva.nl (Casper H.S. Dik)
>Newsgroups: comp.sys.sun.misc,comp.sys.sun.admin
>Subject: FIX for slow rebinding of NIS.
>Summary: a small change in libc makes life with NIS a lot easier.
>Message-ID: <1992Jan17.173905.11727@fwi.uva.nl>
>Date: 17 Jan 92 17:39:05 GMT
>Sender: news@fwi.uva.nl
>Organization: FWI, University of Amsterdam
>Lines: 138
>Nntp-Posting-Host: halo.fwi.uva.nl

Have you been plagued by long waits when your NIS server is rebooted?
READ ON!

Sun has a patch, but the README says:

********************* WARNING ******************************

  This is a new version of ypbind that never uses the NIS
  binding file to cache the servers binding. This will have
  the effect of fixing the current symptom. However, it might
  degrade the overall performance of the system when the
  server is available. This is most likely to happen on an
  overloaded server, which will cause the network to produce
  a broadcast storm.

*************************************************************

Therefor, I have produced another fix.

o What goes wrong.

When the NIS server is rebooted, ypserv will obtain different ports
to listen for RPC requests. All clients will continue to use the old
binding they obtained earlier. The NIS server will send ICMP dst unreachable
messages for the RPC requests that arrive at the old port. These ICMPs
are dropped on the floor and the client code will continue sending the
requests until the timer has expired. The small fix at the end of this
message will pick up these ICMP messages and deliver them to the RPC layer.

o Before and after.

I've tested this on some machines and this is the result:

	(kill and restart ypserv on the server)

original% time ypmatch user passwd
user:....
0.040u 0.090s 2:35.64 0.0% 0+126k 0+0io 0pf+0w (155 seconds elapsed time)

fixedhost% time ypmatch user passwd
user:....
0.050u 0.050s 0:10.20 0.9% 0+136k 0+0io 0pf+0w (10 seconds elapsed time)

Rebinding is almost instantaneous.

o Other benefits.
	RPC calls that use UDP as transport will no longer time out but
	will abort much sooner. (E.g., the remote host is unreachable or
	111/udp is filtered by an intermediate router)
1995-04-02 20:05:20 +00:00
Garrett Wollman
990647991e Moving Sun RPC code into libc, part 1. Based on work done by a number of
people, including J.T. Conklin, Theo de Raadt, Paul Richards, and probably
someone else who's going to flame me as soon as they see this message.
1994-08-07 18:36:12 +00:00