Bug 41859

Summary:	ctxusb fails to start (/proc/7717/exe: parent readlink: Permission denied)
Product:	Z_Univention Corporate Client (UCC)	Reporter:	Felix Botner <botner>
Component:	Terminal services	Assignee:	Erik Damrose <damrose>
Status:	CLOSED WORKSFORME	QA Contact:	Felix Botner <botner>
Severity:	normal
Priority:	P5	CC:	walkenhorst
Version:	UCC 3.0
Target Milestone:	UCC 3.0-errata
Hardware:	Other
OS:	Linux
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Description Felix Botner

2016-07-26 18:13:01 CEST

For USB redirection wfica starts /opt/Citrix/ICAClient/ctxusb. On UCC 3.0 this fails with:

Jul 18 14:08:33 hp ctxusb[7723]: /proc/7717/exe: parent readlink: Permission denied
Jul 18 14:08:34 hp wfica[7717]: ctxusb: Kein passender Prozess gefunden
Jul 18 14:08:38 hp wfica[7717]: Writing to hap_ica_pipes: Ungültiger Dateideskriptor

/opt/Citrix/ICAClient/ctxusb has the setuid bit set

-r-sr-xr-x 1 root root 71528 Nov 24  2015 /opt/Citrix/ICAClient/ctxusb

See Bug #37928 for a possible workaround

Comment 1 Erik Damrose

2016-09-27 15:53:50 CEST

It works with the recent Citrix Receiver 13.4:
icaclient 13.4.0
ctxusb 2.7
Both are available on the UCC 3 test mirror and will be part of the next thinclient image. Will be included in the next thinclient image (Bug #42516)

Comment 2 Felix Botner

2016-09-27 16:14:52 CEST

yes

Comment 3 Janek Walkenhorst

2016-10-17 14:23:19 CEST

<https://errata.software-univention.de/ucc/3.0/2.html>