Take the 2-minute tour ×
Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems.. It's 100% free, no registration required.

Currently setting up xpra, which wants to run an X instance as non-root using the dummy driver, but the system Xorg binary is SUID. Since the system auto-updates, I would prefer not making and maintaining a non-SUID copy of the binary. I'm also trying to avoid using a hack like copy-execute-delete, e.g. in the tmp directory (would prefer to make it a clean one-liner, which I instinctively believe should be possible, though there may be some subtle security hole this capability would open). Symlinks would be acceptable, though AFAIK they don't provide permission bit masking capabilities.

My current best solution is a nosuid bind mount on the bin directory, which seems to do the trick, but as above I'd still prefer a solution that doesn't leave crunk in my system tree/fstab (e.g. some magic environment variable that disables suid the same way a nosuid mount does, or some commandline execute jutsu that bypasses the suid mechanism).

Any thoughts?

share|improve this question

1 Answer 1

If X is dynamically linked, you could call the dynamic linker like:

/lib/ld.so /path/to/X

(adapt ld.so to your system).

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.