Andre Albsmeier andre at
Fri May 20 12:46:46 PDT 2005

On Tue, 03-May-2005 at 04:10:18 -0700, Colin Percival wrote:
> Danny Braniss wrote:
> > BTW, this, the MNT_NOEXEC, uncovered, IMHO, a bug in libexec/rtld-elf/rtld.c
> > where it's now checking for MNT_NOEXEC, but only if LD_LIBRARY_PATH is set!
> This is not a bug.  Checking for MNT_NOEXEC adds a cost in performance, and
> it is not necessary if LD_LIBRARY_PATH, LD_PRELOAD, and LD_LIBMAP* are not
> set -- based on the assumption, that is, that no (sane) sysadmin would ever
> put a MNT_NOEXEC-mounted filesystem into the default library path.
> I agree that it's a bit counter-intuitive, but it's really just a case of
> saving time by not checking for something which should Never Happen. :-)
> Colin Percival
> PS. Bravo to Ian for tracking down the bug in NFS -- I spent a while looking

You may want to look at the PR mentioned in the commit message to
see who did this initially. I just changed it at a different place
of the kernel (the same way as it was done in 4.x).


> for this, but got hopelessly lost.
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An NT server can be run by an idiot, and usually is.

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