Re: psig for Linux

[William Cohen <wcohen at redhat dot com>]

David Smith wrote:
> Eugene Teo wrote:
> > Hi Betito,
> >
> > <quote sender="Betito Oliveira">
> > > I am trying to run a little "hello world" in systemtap with the 20071704
> > > snapshot (i am using this version purposely), with ARM arch, on Debian.
> > > I have already installed all the packages necessary.
> > >
> > > I run: stap hello.stp -vv -k
> > > and I get this error:
> > >
> > > stap hello.stp -vv -k
> > > SystemTap translator/driver (version 0.5.15/0.128 built 2008-01-11)
> > > Copyright (C) 2005-2007 Red Hat, Inc. and others
> > > This is free software; see the source for copying conditions.
> > > Created temporary directory "/var/tmp/stapCTonIb"
> > > Searched '/usr/stap0714/share/systemtap/tapset/*.stp', found 35
> > > Searched '/usr/stap0714/share/systemtap/tapset/LKET/*.stp', found 19
> > > Pass 1: parsed user script and 54 library script(s) in
> > > 4250usr/60sys/4392real ms.
> > > Pass 2: analyzed script: 1 probe(s), 1 function(s), 0 embed(s), 0 global(s)
> > > in 60usr/0sys/54real ms.
> > > Pass 3: using cached
> > > /root/.systemtap/cache/a8/stap_a820a733cd6e86f86c93dfbe5e80c64b_267.c
> > > Pass 4: using cached
> > > /root/.systemtap/cache/a8/stap_a820a733cd6e86f86c93dfbe5e80c64b_267.ko
> > > Pass 5: starting run.
> > > Running sudo /usr/stap0714/bin/staprun -v -u root -d 18254
> > > /var/tmp/stapCTonIb/stap_a820a733cd6e86f86c93dfbe5e80c64b_267.ko
> > > root is not in the sudoers file.  This incident will be reported.
> > > Pass 5: run completed in 0usr/20sys/33real ms.
> > > Pass 5: run failed.  Try again with more '-v' (verbose) options.
> > > Keeping temporary directory "/var/tmp/stapCTonIb"
>
> I've never tried systemtap on arm, but I'll jump in anyway.
>
> Always look at the first error.  In your case, that is: "root is not in
> the sudoers file".  I'd fix that first.  Here's what my /etc/sudoers
> file has for root:
>
>   ## Allow root to run any commands anywhere
>   root    ALL=(ALL)       ALL
>
> I'd fix that, reboot, and try again.

I was a little surprised that of the requirement of adding root to /etc/sudoers. 
Newer code in systemtap cvs removes the requirement of root in /etc/sudoers:

2007-08-14  David Smith  <dsmith@redhat.com>

	Merge from setuid-branch.  Changes also by Martin Hunt
	<hunt@redhat.com>.
...
	* systemtap.spec.in: Version increase to 0.6-1 and added
	BuildReq for libcap-devl (and removed sudo requirement).
	Added %pre script to create new groups.  Staprun is now
	setuid.

...
	* buildrun.cxx (run_pass): No longer runs staprun with "sudo".

That should be available with the next respin.

-Will


-Will