X2Go Bug report logs - #694
CUPS 1.7.x remounts /tmp and breaks cups-x2go

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Message #5 received at submit@bugs.x2go.org (full text, mbox, reply):

From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

To: submit@bugs.x2go.org

Subject: CUPS 1.7.x remounts /tmp and breaks cups-x2go

Date: Tue, 09 Dec 2014 05:15:48 +0000

[Message part 1 (text/plain, inline)]

Package: cups-x2go
Severity: important


The workaround provided below can be applied to x2goprint from  
x2goserver-printing package.

But my gut feelings tell me, we need to review cups-x2go. Maybe this  
bug gets reassigned to x2goserver-printing later, if my gut feelings  
get proven wrong.

Mike

----- Weitergeleitete Nachricht von Роман <inpos@yandex.ru> -----
  Datum: Mon, 01 Dec 2014 10:59:36 +0300
    Von: Роман <inpos@yandex.ru>
Betreff: [X2Go-User] X2Go Linux Server. Virtual print issue workaround
     An: x2go-user@lists.x2go.org

For those who can't print to redirected printer here my workaround.
 
On X2Go Server do following (by root):
----------------------------------------------
cd /usr/bin
 
mv x2goprint x2goprint.orig
 
cat << EOF > x2goprint
#!/bin/bash
umount /tmp
x2goprint.orig $@
EOF
 
chmod a+x x2goprint
-----------------------------------------------
 
The problem is that CUPS remounts /tmp during print process.
Therefore temporary x2go directories have become unavailable.
 
Best regards,
Inpos.

----- Ende der weitergeleiteten Nachricht -----


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[Message part 2 (application/pgp-signature, inline)]

Message #10 received at 694@bugs.x2go.org (full text, mbox, reply):

From: Chris <x2go@hemsing.eu>

To: 694@bugs.x2go.org

Subject: Another workaround

Date: Sun, 10 Jul 2016 12:49:10 +0200

After years this important issue is still there...

On debian jessie one can do:
Change
/etc/systemd/system/printer.target.wants/cups.service

from
PrivateTmp=true
to
PrivateTmp=false

I don't really see a necessity for a private tmp anyway ...

****
Apart from the workaround, I would say: why use /tmp for the spool area mount 
points on the server side in the first place? The directories are being owned by 
the respective user anyway.
Why not use the user's home directory under ~/.x2go?
Then this problem would be solved without touching x2goserver-printing nor 
cups-x2go nor the operating system (see the workaround).

Chris

P.S.: My lack of knowledge: why has the printing be divided in cups-x2go and 
x2goserver-printing? Why not one package?

Message #13 received at 694-quiet@bugs.x2go.org (full text, mbox, reply):

From: Stefan Baur <X2Go-ML-1@baur-itcs.de>

To: 694-quiet@bugs.x2go.org

Subject: Closing

Date: Thu, 25 Jan 2024 22:24:50 +0100

Control: close -1
Control: archive -1

Once this [0] patch was dropped from Debian Buster, the issue went away.

Kind Regards,
Stefan Baur

[0] 
<https://salsa.debian.org/printing-team/cups/-/commit/3f9e548dce8b890e48c78292f0dba45bd4db8325>

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