saned: permission problem with Deskjet_F300_series all-in-one

[Nick Urbanik]

On 03/01/08 05:52 -0800, Mr.Scrooge wrote:
>Nick Urbanik <nicku at nicku.org> wrote: Dear Mr Scrooge,
>On 02/01/08 17:16 -0800, Mr.Scrooge wrote:
>>This might be a stupid question but did you give the saned group
>>permission to use the scanner?
>
>Clearly not; I don't understand why I can use it and saned can't.
>I also am not clear on the udev setup required to get it to work.
>
>>I installed an all in one device at
>>home and i installed it under my account(via
>>System>Administration>(root Password) and other users i.e. my
>>girlfriend could not use it right away.
>
>As I said before:
>>> Here are the permissions:
>>> $ ls -l /proc/bus/usb/003/004
>>> -rw-r--r-- 1 root root 147 2008-01-03 06:21 /proc/bus/usb/003/004
>I think you are having the same problem that i was having. Root owns
>the printer and has read/write permission. The group permissions( in
>this case the group root belongs to which only includes root has read
>and everyone else has only the read permission). It confused me as
>well the first time. So you must use chmod to make the printer
>accessible to everyone or try installing the printer while logged in
>as a member of the saned group.

I don't see how that can help; you or I would do so as root.

>Can members of the saned group even see the printer? Does it show up
>in the drop down when they try to print or is the postscript/default
>the only thing present?

But why can I (as my own login) use the scanner?  Clearly I don't have
write access to the USB device, yet it works for me, but not the
saned user. Please look at the following carefully:

$ sudo -u saned scanimage -L
No scanners were identified.
$ sudo -u nicku scanimage -L
device `hpaio:/usb/Deskjet_F300_series?serial=CN72FGM1CB04KH' is a Hewlett-Packard Deskjet_F300_series all-in-one
$ sudo -u saned sane-find-scanner|grep ^found
found USB scanner (vendor=0x03f0, product=0x5511) at libusb:003:005
$ sudo -u nicku sane-find-scanner|grep ^found
found USB scanner (vendor=0x03f0 [HP], product=0x5511 [Deskjet F300 series]) at libusb:003:005
-- 
Nick Urbanik              http://nicku.org          nicku at nicku.org
GPG: 7FFA CDC7 5A77 0558 DC7A 790A 16DF EC5B BB9D 2C24 ID: BB9D2C24
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