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[[!meta copyright="Copyright © 2007, 2008, 2009, 2010 Free Software Foundation,
Inc."]]
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*rpctrace* is -- roughly -- an equivavlent to Linux's *strace* or Solaris' or
BSD's *truss*. It is used to trace [[remote_procedure_call|rpc]]s a process is
doing.
See `rpctrace --help` about how to use it.
# Issues and Patches
[[!tag open_issue_hurd]]
* <http://savannah.gnu.org/patch/?2104> -- don't assert that local port names
are valid
* <http://savannah.gnu.org/bugs/?3939> -- `rpctrace`d program hangs when signal
that terminates or suspends it is sent
* <http://savannah.gnu.org/patch/?1633> -- terminated with `C-c` `rpctrace`d
programs hang
* <http://savannah.gnu.org/patch/?5580> -- more readable output
* IRC, unknown channel, unknown date
<youpi> how to rpctrace a translator ?
<youpi> ah, just settrans /usr/bin/rpctrace...
<youpi> hum, it hung, and killing it got a Mach panic (thread in unexpected
state) ...
* IRC, unknown channel, unknown date
<antrik> hm... for a funny effect, try running rpctrace on
/servers/socket/1, and then use dpkg... ;-)
* IRC, unknown channel, unknown date.
<youpi> the problem of rpctrace is that it's a man in the middle :)
<youpi> so in principle, by design authentication stuff shouldn't work
<antrik> I don't think the Hurd auth mechanism in any way prevents or tries to prevent man-in-the-middle...
<youpi> maybe, but just try, you'll see all kinds of issue as soon as you have authentication stuff
<youpi> and the basic reason is that being a man in the middle needs special care
<youpi> which rpctrace doesn't completely do
<antrik> it's a while since I have dived into rpctrace; but AIUI, it should work just fine if the proxying is done properly
<antrik> note that there is a number of known bugs in rpctrace, for which zhengda has sent patches... though I haven't reviewed all of them I think
<antrik> there are some nasty Mach operations that are really hard to proxy -- but I don't think the auth mechanism needs any of these...
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