Re: Chmod of /dev/ulptN

2013-02-12 Thread Polytropon
On Mon, 11 Feb 2013 18:33:12 -0800, Ronald F. Guilmette wrote:
 I exactly followed the directions here:
 
   
 http://lists.freebsd.org/pipermail/freebsd-questions/2012-February/238118.html
 
 Nontheless, my /dev/lpt0 node still only has permissions set to 0644.

In the subject you've mentioned /dev/ulpt (USB LPT port), and
now /dev/lpt (conventional LPT port), still the same applies
for both.



 Why?

Because the content of /dev is dynamically generated and maintained
as a virtual file system. This service is controled by devfs (devices
created at startup time) and devd (devices dynamically created during
runtime), both with their respective configuration files devfs.conf
and devfs.rules, and devd.conf. Those files need to be adjusted. To
make the change become active, restart the service.



 What did I do wrong?

You did not use the current proper method. :-)

Make the change you need in /etc/devfs.conf, e. g.

perm ulpt0 0664

if you need rw/rw/r. You can also use own user:group in
a similar way if you need to change file owner or group.
See man devfs.conf for details.




-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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Re: Chmod of /dev/ulptN

2013-02-12 Thread Warren Block

On Tue, 12 Feb 2013, Polytropon wrote:


On Mon, 11 Feb 2013 18:33:12 -0800, Ronald F. Guilmette wrote:

I exactly followed the directions here:

  http://lists.freebsd.org/pipermail/freebsd-questions/2012-February/238118.html

Nontheless, my /dev/lpt0 node still only has permissions set to 0644.


In the subject you've mentioned /dev/ulpt (USB LPT port), and
now /dev/lpt (conventional LPT port), still the same applies
for both.


Actually, the standard devfs.conf settings do not work for dynamic 
devices like ulpt0.  devd is the only way to do that for dynamic 
devices.  Here's an example I use use for a USB printer.  The vendor and 
product IDs were determined with usbconfig dump_device_desc:


# WB
# link Epson R200 printer to /dev/ulpt-r200 and unlpt-r200
attach 20 {
device-name ulpt[0-9];
match vendor 0x04b8;
match product 0x0005;
action ln -sf /dev/$device-name /dev/ulpt-r200;
action ln -sf /dev/`echo $device-name \
| sed -e 's/ulpt/unlpt/'` /dev/unlpt-r200;
action chmod g+w /dev/ulpt-r200 /dev/unlpt-r200;
};

# WB
detach 20 {
device-name ugen[0-9].[0-9];
match vendor 0x04b8;
match product 0x0005;
action rm -f /dev/ulpt-r200 /dev/unlpt-r200;
};
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Re: Chmod of /dev/ulptN

2013-02-12 Thread Ronald F. Guilmette

In message alpine.bsf.2.00.1302120808400.95...@mail.fig.ol.no, 
=?ISO-8859-1?Q?Trond_Endrest=F8l?= trond.endres...@fagskolen.gjovik.no wrote:

On Mon, 11 Feb 2013 18:33-0800, Ronald F. Guilmette wrote:

 I exactly followed the directions here:
 
   http://lists.freebsd.org/pipermail/freebsd-questions/2012-February/238118.
html
 
 Nontheless, my /dev/lpt0 node still only has permissions set to 0644.
 
 Why?
 
 What did I do wrong?

Is this about /dev/ulpt[0-9]+ or about /dev/lpt[0-2]?

I was only concerned about /dev/ulpt[0-9]+

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Chmod of /dev/ulptN

2013-02-11 Thread Ronald F. Guilmette


I exactly followed the directions here:

  http://lists.freebsd.org/pipermail/freebsd-questions/2012-February/238118.html

Nontheless, my /dev/lpt0 node still only has permissions set to 0644.

Why?

What did I do wrong?
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Re: Chmod of /dev/ulptN

2013-02-11 Thread Trond Endrestøl
On Mon, 11 Feb 2013 18:33-0800, Ronald F. Guilmette wrote:

 I exactly followed the directions here:
 
   
 http://lists.freebsd.org/pipermail/freebsd-questions/2012-February/238118.html
 
 Nontheless, my /dev/lpt0 node still only has permissions set to 0644.
 
 Why?
 
 What did I do wrong?

Is this about /dev/ulpt[0-9]+ or about /dev/lpt[0-2]?

If the latter is the case, then maybe you should edit /etc/devfs.conf 
instead.

Something along these lines would help:

own  lpt0 root:wheel
perm lpt0 0660

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