Can't attach over NFS?

Can't attach over NFS?

[Jim Blandy]

In gdb/testsuite/gdb.base/attach.exp, there is the following code:

    # Because we can't attach over nfs, copy binfile to /tmp/${binfile}.${pid}
    # and replace binfile with a symbolic link
    set pid [pid]
    exec /bin/cp -f ${binfile} /tmp/attach1.${pid}
    exec rm -f ${binfile}
    ...

Does anyone know of any system where this limitation actually holds?
This rigamarole is causing me some trouble, and I'd like to make the
code conditional, or (preferably) delete it.

We got attach.exp from the HP merge, which makes me suspect that it's
an HP problem, but this entire test is disabled on HPUX.

Re: Can't attach over NFS?

[Ben Elliston]

>>>>> "Jim" == Jim Blandy <jimb@redhat.com> writes:

  Jim> Does anyone know of any system where this limitation actually holds?
  Jim> This rigamarole is causing me some trouble, and I'd like to make the
  Jim> code conditional, or (preferably) delete it.

  Jim> We got attach.exp from the HP merge, which makes me suspect that it's
  Jim> an HP problem, but this entire test is disabled on HPUX.

This rings a bell.  If my memory serves me correctly, on HP-UX you
can't ptrace an executable that is on an NFS volume.

Ben

Re: Can't attach over NFS?

[Alan Matsuoka]

Ben Elliston wrote:
> 
> >>>>> "Jim" == Jim Blandy <jimb@redhat.com> writes:
> 
>   Jim> Does anyone know of any system where this limitation actually holds?
>   Jim> This rigamarole is causing me some trouble, and I'd like to make the
>   Jim> code conditional, or (preferably) delete it.
> 
>   Jim> We got attach.exp from the HP merge, which makes me suspect that it's
>   Jim> an HP problem, but this entire test is disabled on HPUX.
> 
> This rings a bell.  If my memory serves me correctly, on HP-UX you
> can't ptrace an executable that is on an NFS volume.
> 

I think you're right. I remember that I had to do something like that
with HP-UX. I can't remember why though.

-- 
Alan Matsuoka
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