Re: Matlab & LD_LIBRARY_PATH

On Thu, 3 Aug 2006, Matthew Miller wrote:

On Wed, Aug 02, 2006 at 11:48:49PM -0400, David Scriven wrote:
One can set LD_LIBRARY_PATH manually - ie. from the prompt
and things work fine.

My guess that somewhere it is being UNSET, but I can't figure
out where. This happens on different machines running either
FC4 or FC5.

Something must be "sanitizing" it for security reasons. Interesting.

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=164869

I recall running into this sometime around RH9. I thought I had filed a bug, but I can't find it now. I did find this, though:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=118262

And I wonder if the conclusion is relevant:

Comment #3 From Jason Vas Dias:
This bug is blocked by glibc bug 129682 - no setuid/setgid program
can obtain LD_LIBRARY_PATH from the environment of a non-owner
invoking user.

at could be converted to not require setuid/setgid bits to be set -
will work on this for next at version.

Comment #4 From Jason Vas Dias:
It seems the glibc developers consider this not a bug,
but a security feature that is unlikely to be changed.
So you'll just have to set LD_LIBRARY_PATH manually
in your at jobs - it won't be recorded from your
invoking environment if you are not root.

For the reader's convenience:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=129682

The question is, when logging in via the display manager, does something setuid/setgid get run after .bash_profile? Then, is there some startup script that gets run after that program that could set the environment?

In my experience, logging in not via the display manager results in LD_LIBRARY_PATH being set from .bash_profile as expected.

--
Matthew Saltzman

Clemson University Math Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs

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