Date: Wed, 28 Apr 2010 13:22:10 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Marco Beishuizen <mbeis@xs4all.nl> Cc: Roland Smith <rsmith@xs4all.nl>, freebsd-questions@freebsd.org Subject: Re: Using a scanner (USB) as user and not as root Message-ID: <alpine.BSF.2.00.1004281310520.23838@wonkity.com> In-Reply-To: <alpine.BSF.2.00.1004282057490.3115@yokozuna.lan> References: <alpine.BSF.2.00.1004281939070.3115@yokozuna.lan> <20100428182223.GA34355@slackbox.erewhon.net> <alpine.BSF.2.00.1004282057490.3115@yokozuna.lan>
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On Wed, 28 Apr 2010, Marco Beishuizen wrote:
> On Wed, 28 Apr 2010, Roland Smith wrote:
>
>> Are the permissions correct? Check with 'ls -l /dev/usb/ /dev/ugen*'.
>> Is your user-id in the usb group? Check by running 'id' as the normal user.
>>
>> If all that is in order, remove all lines except the three above from
>> /etc/devfs.rules, and try again.
>
> Running id as user looks ok:
>
> uid=1001(marco) gid=0(wheel) groups=0(wheel),5(operator),1001(usb)
>
> But the permissions are not:
>
> ls -l /dev/usb/ /dev/ugen*
> lrw-rw-r-- 1 root usb 9 Apr 28 19:05 /dev/ugen0.1 -> usb/0.1.0
> lrw-rw-r-- 1 root usb 9 Apr 28 19:05 /dev/ugen1.1 -> usb/1.1.0
> lrw-rw-r-- 1 root usb 9 Apr 28 21:05 /dev/ugen1.2 -> usb/1.2.0
> lrw-rw-r-- 1 root usb 9 Apr 28 21:05 /dev/ugen1.3 -> usb/1.3.0
> lrw-rw-r-- 1 root usb 9 Apr 28 19:05 /dev/ugen2.1 -> usb/2.1.0
>
> /dev/usb/:
> total 0
> crw------- 1 root operator 0, 87 Apr 28 19:05 0.1.0
> crw------- 1 root operator 0, 93 Apr 28 19:05 0.1.1
> crw------- 1 root operator 0, 89 Apr 28 19:05 1.1.0
> crw------- 1 root operator 0, 94 Apr 28 19:05 1.1.1
> crw------- 1 root operator 0, 104 Apr 28 21:05 1.2.0
> crw------- 1 root operator 0, 105 Apr 28 21:05 1.2.1
> crw------- 1 root operator 0, 117 Apr 28 21:05 1.3.0
> crw------- 1 root operator 0, 119 Apr 28 21:05 1.3.1
> crw------- 1 root operator 0, 91 Apr 28 19:05 2.1.0
> crw------- 1 root operator 0, 95 Apr 28 19:05 2.1.1
You can use devd.conf for this:
attach 100 {
device-name "ugen[0-9].[0-9]";
match "vendor" "0x04b8";
match "product" "0x010a";
action "usb_devaddr=`echo $device-name | sed 's#^ugen##'` && \
chown root:saned /dev/usb/${usb_devaddr}.* && \
chmod 0660 /dev/usb/${usb_devaddr}.*
Copied from a post on -current or similar; apologies to the author, who
I've forgotten. I thought this was in the default devd.conf as an
example, but it appears not.
devfs.rules don't apply to devices that are created dynamically after
boot-up. Or I guess they might be if you reload the ruleset with
applyset after the device is created, but devd is a lot more capable.
-Warren Block * Rapid City, South Dakota USA
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