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Bug 1338039 - scripts run through "at" ignore SIGPIPE due to systemd, atd@.service needs IgnoreSIGPIPE=no
Summary: scripts run through "at" ignore SIGPIPE due to systemd, atd@.service needs Ig...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: at
Version: 7.2
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Tomas Mraz
QA Contact: Radka Brychtova
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-05-20 21:03 UTC by giulioo
Modified: 2016-11-04 03:30 UTC (History)
2 users (show)

Fixed In Version: at-3.1.13-22.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-11-04 03:30:06 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:2311 0 normal SHIPPED_LIVE at bug fix update 2016-11-03 13:41:26 UTC

Description giulioo 2016-05-20 21:03:19 UTC 
Description of problem:
Scripts run through "at" will ignore SIGPIPE sue to atd being tun from systemd which defaults to IgnoreSIGPIPE=yes

Version-Release number of selected component (if applicable):
at-3.1.13-20.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Create this script

#!/bin/sh
/usr/bin/seq 1 1000000|/usr/bin/head -n 1  >/tmp/my.out
/usr/bin/perl -le 'print $SIG{PIPE}' >> /tmp/my.out

2.
echo /path/script|at "now +1 minutes"

Actual results:
1. /tmp/my.out will contain 
   1
   IGNORE
2. /var/spool/mail/<user> will contain an email with
   /usr/bin/seq: write error: Broken pipe

Expected results:
1. /tmp/my.out will contain 
   1
   
2. No email

Additional info:

The file /usr/lib/systemd/system/atd.service needs
IgnoreSIGPIPE=no
in [Service] section
Comment 5 Radka Brychtova 2016-06-09 09:21:59 UTC 
OLD PACKAGE
at-3.1.13-20.el7.x86_64

running reproducer: 
:: [   PASS   ] :: Command 'echo '#!/bin/sh
:: [   PASS   ] :: /usr/bin/seq 1 1000000|/usr/bin/head -n 1  >/tmp/my.out
:: [   PASS   ] :: /usr/bin/perl -le 'print {PIPE}' >> /tmp/my.out
:: [   PASS   ] :: ' > /tmp/tmp.vnQQ84kQ0d/testscript.sh' (Expected 0, got 0)
:: [  BEGIN   ] :: Running 'chmod +x /tmp/tmp.vnQQ84kQ0d/testscript.sh'
:: [   PASS   ] :: Command 'chmod +x /tmp/tmp.vnQQ84kQ0d/testscript.sh' (Expected 0, got 0)
:: [  BEGIN   ] :: Running 'echo $TmpDir/testscript.sh |at "now +1 minutes"'
job 1 at Thu Jun  9 08:53:00 2016
:: [   PASS   ] :: Command 'echo $TmpDir/testscript.sh |at "now +1 minutes"' (Expected 0, got 0)
:: [   PASS   ] :: File '/tmp/my.out' should contain '1' 
:: [   FAIL   ] :: File '/var/spool/mail/root' should not contain '/usr/bin/seq: write error: Broken pipe' 

-----------------------------

NEW PACKAGE
at-3.1.13-22.el7.x86_64

running reproducer:
:: [   PASS   ] :: Command 'echo '#!/bin/sh
:: [   PASS   ] :: /usr/bin/seq 1 1000000|/usr/bin/head -n 1  >/tmp/my.out
:: [   PASS   ] :: /usr/bin/perl -le 'print {PIPE}' >> /tmp/my.out
:: [   PASS   ] :: ' > /tmp/tmp.S7tx9LXGyG/testscript.sh' (Expected 0, got 0)
:: [  BEGIN   ] :: Running 'chmod +x /tmp/tmp.S7tx9LXGyG/testscript.sh'
:: [   PASS   ] :: Command 'chmod +x /tmp/tmp.S7tx9LXGyG/testscript.sh' (Expected 0, got 0)
:: [  BEGIN   ] :: Running 'echo $TmpDir/testscript.sh |at "now +1 minutes"'
job 1 at Thu Jun  9 04:51:00 2016
:: [   PASS   ] :: Command 'echo $TmpDir/testscript.sh |at "now +1 minutes"' (Expected 0, got 0)
:: [   PASS   ] :: File '/tmp/my.out' should contain '1' 
:: [   PASS   ] :: There is no new email


Since this test Passed on all architectures => verified
Comment 7 errata-xmlrpc 2016-11-04 03:30:06 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2311.html
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