[TriLUG] Serial usb devices permissions hot plug question on Rel 4

[Ralph Blach]

Ok, well I found the answer after a lot of looking.
In the directectory

/etc/udev/permissions.d

the file

50-udev.permissions

has the default permissions for all of the devices.
for serial devices
changing
# serial+dialup devices
ttyS*:root:uucp:0666
ippp*:root:uucp:0660
isdn*:root:uucp:0660
isdnctrl*:root:uucp:0660
capi*:root:uucp:0660
dcbri*:root:root:0660
ircomm*:root:uucp:0660
#ttyUSB*:root:uucp:0660  #
ttyUSB*:root:uucp:0666    #changing this to 666 changed the default
permissions
tts/[0-9]*:root:uucp:0660
tts/USB[0-9]*:root:uucp:0660


This was much to hard to find and correct.  There should be a gui interface
to configure this or
the docucmentation should point you directly to this file.

Chip

On 8/24/06, Brian Henning <brian at strutmasters.com> wrote:
>
> I think the "right" way to handle this issue is to ensure that every
> process that needs to access the device be run under a user who is a
> member of the group owner of the usb device.
>
> Nevertheless, I'd be interested in hearing another answer to this too,
> since I can't seem to get CUPS to run as the right user that has rw
> access to my USB printers (and end up manually setting o+rw on
> /dev/usb/lp* after every reboot and/or hot plug).
>
> ~Brian
>
> Ralph Blach wrote:
> > I have USB serial adapter which I plug into my redhat Rhel 4
> system.  When
> > USBserail port is
> > plugged in, its permissions are always gu+rw but not other.
> >
> > Where do I modify hotplug or the USB conf files so the USB serial port
> > which
> > are plugged
> > in will have there permissions set to guo+rw?
> >
> > Thanks
> >
> > Chip
>
> --
> ----------------
> Brian A. Henning
> strutmasters.com
> 336.597.2397x238
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