Bug 156085 - ctrl-c exits R session in sesh when run using sudo with selinux enabled
ctrl-c exits R session in sesh when run using sudo with selinux enabled
Product: Fedora
Classification: Fedora
Component: sudo (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Karel Zak
Ben Levenson
: 156086 (view as bug list)
Depends On:
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Reported: 2005-04-27 09:16 EDT by Marc Schwartz
Modified: 2007-11-30 17:11 EST (History)
0 users

See Also:
Fixed In Version: 1.6.8p12-3
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2006-05-29 15:41:31 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Marc Schwartz 2005-04-27 09:16:08 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050416 Fedora/1.0.3-1.3.1 Firefox/1.0.3

Description of problem:
When running R (http://www.r-project.org/) version 2.1.0 in a console using 'sudo R', ctrl-c will exit R and return to the console command line, however leaving an R process running. This has been replicated with at least one prior R version as well.

It appears that R is run in sesh in this situation. Presumably, ctrl-c kills sesh, but does not kill R.

A bug was filed in the R bug tracking system:


However this appears to be related to using "sudo R" when SELinux is enabled, as the ctrl-c behavior does not occur when SELinux is disabled.

Relevant output from "ps -aux" shows:

root     12272 49.2  0.8 23108 16924 ?       R    07:45   2:07 /usr/local/lib/R/bin/exec/R
root     15503  0.0  0.0  2556  252 pts/1    S+   07:46   0:00 sesh /usr/local/bin/R
root     15626  0.5  0.8 23204 16920 pts/1   S+   07:46   0:00 /usr/local/lib/R/bin/exec/R

The first R session is what remains from the prior ctrl-c event.

Relevant content from /etc/sudoers is:

marcs   ALL=(ALL) ALL

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
With SELinux enabled:

1. Run "sudo R" from a terminal emulator
2. Enter password
3. R loads
4. Press ctrl-c once at the R prompt

Actual Results:  It appears that sesh is killed, exiting the R session. However an R process remains.

Expected Results:  Presumably ctrl-c should not kill sesh and the R session

Additional info:
Comment 1 Thomas Woerner 2005-04-27 09:19:57 EDT
*** Bug 156086 has been marked as a duplicate of this bug. ***
Comment 2 Karel Zak 2006-05-29 15:41:31 EDT
The sudo command doesn't use sesh in distributions >=FC5. Closing.

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