kern/122838: [devfs] devfs doesn't handle complex paths (like
jh at FreeBSD.org
Wed Dec 8 13:40:08 UTC 2010
The following reply was made to PR kern/122838; it has been noted by GNATS.
From: Jaakko Heinonen <jh at FreeBSD.org>
To: Dmitry Marakasov <amdmi3 at amdmi3.ru>
Cc: bug-followup at FreeBSD.org
Subject: Re: kern/122838: [devfs] devfs doesn't handle complex paths (like
Date: Wed, 8 Dec 2010 15:39:10 +0200
On 2008-04-17, Dmitry Marakasov wrote:
> devfs behavior on nested paths is really unintuitive and pretty hard to tune.
I agree that the behavior of rules is confusing with directories.
> Suppose I have ZFS zvol under pool/vms/win2000 and I want to unhide node for it in the jail.
> Here's what it look like unhidden:
> % find /dev/zvol
Following rules should do what you want:
path zvol/* hide
path zvol/pool/vms/win2000 unhide
The problem is that for directories and symbolic links, rules match
against single component name while for device files rules match against
full device path (si_name). This may cause unwanted effects. For
example, the rule "devfs fd hide" hides an entry /dev/label/fd/label.
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