Eliminating LD_PRELOAD ERRORs with setuid programs

[Peter Åstrand]

We are using the LD_PRELOAD mechanism like this:

LD_PRELOAD=libfoo.so
LD_LIBRARY_PATH=/opt/ourproduct/lib64:/opt/ourproduct/lib

This works well for both 32 and 64 bit binaries, with one exception: 
setuid programs, which gives:

  ERROR: ld.so: object 'libfoo.so' from LD_PRELOAD cannot be preloaded: ignored.

How can we eliminate this error message? I've found out that it's actually 
possible to use LD_PRELOAD with setuid programs if the library itself is 
setuid and found in a standard directory.

However, we would prefer to have LD_PRELOAD (silently) ignored for setuid 
programs. How can we achieve this?

Regards,
-- 
Peter Ã
strand		ThinLinc Chief Developer
Cendio			http://www.cendio.se
Teknikringen 3
583 30 Linköping        Phone: +46-13-21 46 00