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Date:      Sun, 08 Mar 2015 14:29:30 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 197695] Fix broken KERN_PROC_FILEDESC sysctl
Message-ID:  <bug-197695-8-17ozFvl8zX@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-197695-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-197695-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197695

Jilles Tjoelker <jilles@FreeBSD.org> changed:

           What    |Removed                     |Added
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           Keywords|patch                       |
                 CC|                            |jilles@FreeBSD.org

--- Comment #5 from Jilles Tjoelker <jilles@FreeBSD.org> ---
As it is now, KERN_PROC_FILEDESC is designed for debugging only. The namecache
is best-effort. See for example SVN r275897, which states that newly created
files are deliberately not entered into the namecache (as part of a change to
enter core dump filenames into the namecache).

A second problem is that KERN_PROC_FILEDESC processes all file descriptors at
once and may therefore be slow.

I think directory file descriptors always know their names because directories
have a single "..", all the way up to the root.

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