[Xastir] serial port error with serial GPS

[Gale D. Wilkinson]

unix to unix copy protocol

Gerry Creager N5JXS wrote:

> This is a test.  How many on this list remember what 'uucp' means/meant?
>
> gerry n5jxs
>
> Curt, WE7U wrote:
>
>> On Thu, 26 Feb 2004, Amanda K. Martino wrote:
>>
>>
>>> I have Xastir compiled with ImageMagick support on a P3 machine running
>>> Linux Red Hat 9. I've tried using both serial TNC and serial GPS with
>>> Xastir. Serial TNC works just fine. Serial GPS, however, gives me an
>>> "Error opening Interface 0. Hard fail" when I try to start the 
>>> interface.
>>> I did run the chmod 4555 /usr/local/bin/xastir command when I compiled
>>> Xastir, and my procedure for starting up Xastir is as follows:
>>> login to linux as user capstone
>>> su to root
>>> xastir & from a terminal window as root.
>>
>>
>>
>> Once you've done the "chmod" command, it allows Xastir to gain root
>> priviledges when it needs to, such as when opening ports.  You don't
>> need to "su" in order to run Xastir, and in fact it's not
>> recommended because then when Xastir tries to drop priviledges when
>> it doesn't need them, you're still running as root.
>>
>> I'd run Xastir as the "capstone" user.
>>
>>
>>
>>> I don't see how it could be a permissions problem, but as I'm new to
>>> Xastir I don't have much to base that on except what I just described
>>> above. As mentioned before, serial TNC works perfectly fine. Does 
>>> anyone
>>> have any suggestions as to what might be causing this? Thanks in 
>>> advance
>>> for any help.
>>
>>
>>
>> If you do an "ls -l /dev/ttyS?" you'll see the permissions and
>> user/group for your serial devices.  You are probably using
>> /dev/ttyS0 and /dev/ttyS1 for your ports, right?
>>
>> In your /etc/group file, add your "capstone" user to whatever group
>> the serial ports belong to.  On my system it's the "uucp" group.
>> Change the permissions on the serial devices to 660 if they're not
>> already.  Mine look like this:
>>
>> crw-rw----    1 root     uucp       4,  64 2003-10-02 13:45 /dev/ttyS0
>> crw-rw----    1 root     uucp       4,  65 2003-10-02 13:45 /dev/ttyS1
>> crw-rw----    1 root     uucp       4,  66 2003-10-02 13:45 /dev/ttyS2
>> crw-rw----    1 root     uucp       4,  67 2003-10-02 13:45 /dev/ttyS3
>>
>> After that, you should be able to come in using the "uucp"
>> permissions as the "capstone" user, and run Xastir as the "capstone"
>> user as well.  Make sense?
>>
>> Also make sure you have the case correct for the device name in the
>> Interface->Properties dialog for that interface.  You need a capital
>> 'S'.
>>
>> -- 
>> Curt, WE7U                archer at eskimo dot com
>> Arlington, WA, USA        http://www.eskimo.com/~archer
>> "Lotto:    A tax on people who are bad at math." -- unknown
>> "Windows:  Microsoft's tax on computer illiterates." -- WE7U
>> "The world DOES revolve around me:  I picked the coordinate system!"
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>
>