kern/75233: [fdc] breaking fdformat /dev/fd0 resets device permissions and perhaps causes unkillable process

[John Baldwin]

The following reply was made to PR kern/75233; it has been noted by GNATS.

From: John Baldwin <jhb at freebsd.org>
To: Christoph Mallon <christoph.mallon at gmx.de>
Cc: bug-followup at freebsd.org
Subject: Re: kern/75233: [fdc] breaking fdformat /dev/fd0 resets device permissions and perhaps causes unkillable process
Date: Wed, 13 Feb 2013 11:00:00 -0500

 On Tuesday, February 12, 2013 2:13:16 am Christoph Mallon wrote:
 > On 30.03.2012 16:07, John Baldwin wrote:
 > > You need to use devfs rules for this instead.  The /dev/fd0 device can
 > > come and go with media changes.  To make permissions on /dev/fd0
 > > persistent you need to teach devfs (via a rule) to use the desired
 > > permissions on each fd0 device.
 > 
 > Quote from the description:
 > > %ls -l /dev/fd0
 > > crw-r----- 1 root operator 232, 0 16 Dez 21:41 /dev/fd0
 > > %tail -1 /etc/devfs.conf
 > > perm fd0 0660
 >   ^^^^^^^^^^^^^
 > 
 > Though I haven't used floppy disks in years, I still think there is a bug.
 
 No, devfs.conf does not set devfs rules, it only does a single fixup on boot.  
 To have permissions enforced anytime a device node is created requires using a 
 devfs rule such as via /etc/devfs.rules.  See the devfs manpage for more
 info on how to do this.
 
 -- 
 John Baldwin