how about using using sudo ?
2013/9/25 Michael Hennebry <hennebry@xxxxxxxxxxxxxxxxxxxxx>
> On Wed, 25 Sep 2013, Michael Hennebry wrote:
>
> > On Tue, 24 Sep 2013, Frank Cox wrote:
> >
> >> On Tue, 24 Sep 2013 17:57:12 -0500 (CDT)
> >> Michael Hennebry wrote:
> >>
> >>> What do I change to make it let me use xsane or hp-scan as myself?
> >>
> >> You need to set the permission on the scanner device to allow your
> username to
> >> use it, since it's apparently now set to allow root only.
> >>
> >> scanimage -L will tell you where it is.
> >
> > [root@localhost tmp]# scanimage -L
> > device `hpaio:/usb/Photosmart_C3100_series?serial=CN6ARC321S04KV' is a
> Hewlett-Packard Photosmart_C3100_series all-in-one
> >
> > That agrees with the output from hp-scan, but it does not seem to help.
> > What permissions do I change?
> >
> > root@localhost tmp]# find /dev -name 'Photo*'
> > [root@localhost tmp]# find /usb -name 'Photo*'
> > find: `/usb': No such file or directory
> > [root@localhost tmp]# locate Photosmart_C3100
> > [root@localhost tmp]#
>
> This was done as root:
> > I used strace on hp-scan.
> > It used every "file" under /dev/bus/usb:
> > [root@localhost tmp]# ls -R /dev/bus/usb
> > /dev/bus/usb:
> > 001 002 003 004 005
> >
> > /dev/bus/usb/001:
> > 001 006
> >
> > /dev/bus/usb/002:
> > 001
> >
> > /dev/bus/usb/003:
> > 001 002
> >
> > /dev/bus/usb/004:
> > 001
> >
> > /dev/bus/usb/005:
> > 001
> > [root@localhost tmp]#
>
> I aso strace-d hp-scan as myself and got permission errors:
> [hennebry@localhost tmp]$ grep ermission trace2.txt | sort -u | grep usb
> open("/dev/bus/usb/001/001", O_RDWR) = -1 EACCES (Permission denied)
> open("/dev/bus/usb/001/006", O_RDWR) = -1 EACCES (Permission denied)
> open("/dev/bus/usb/002/001", O_RDWR) = -1 EACCES (Permission denied)
> open("/dev/bus/usb/003/001", O_RDWR) = -1 EACCES (Permission denied)
> open("/dev/bus/usb/003/002", O_RDWR) = -1 EACCES (Permission denied)
> open("/dev/bus/usb/004/001", O_RDWR) = -1 EACCES (Permission denied)
> open("/dev/bus/usb/005/001", O_RDWR) = -1 EACCES (Permission denied)
> [hennebry@localhost tmp]$
>
> Changing the permissions on all of them seems a clunky thing to do.
> Also, I do not know whether such a change would survive a reboot.
>
> > For some reason, hp-scan also opened a lot of sane libraries,
> > mostly for brands other than HP.
> > hp-scan read "Photosmart C3180\n" a lot.
>
> --
> Michael hennebry@xxxxxxxxxxxxxxxxxxxxx
> "On Monday, I'm gonna have to tell my kindergarten class,
> whom I teach not to run with scissors,
> that my fiance ran me through with a broadsword." -- Lily
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