[Bug 272706] procstat(1): procstat vm in jails shows host paths of binaries and shared libraries from outside prison

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 25 Jul 2023 11:19:41 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272706

Andrew "RhodiumToad" Gierth <andrew@tao11.riddles.org.uk> changed:

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                 CC|                            |andrew@tao11.riddles.org.uk

--- Comment #3 from Andrew "RhodiumToad" Gierth <andrew@tao11.riddles.org.uk> ---
(In reply to Elizabeth Myers from comment #2)

Wait, are you saying that procstat executed from *outside* the jail shows the
full paths (which is expected), or that procstat executed *inside* the jail
shows the full paths (which I can't reproduce)?

The code path at issue uses vn_fullpath which is sensitive to the root
directory of the invoking process, i.e. procstat, not to that of the process
being examined.

If you're finding that procstat from *inside* the jail is showing the full
path, can you show a complete session transcript including the jail creation
and execution of the procstat command?

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