Bug 1330595

Summary: /usr/bin/docker wrapper script: $@ must be quoted
Product: Red Hat Enterprise Linux 7 Reporter: Ed Santiago <santiago>
Component: dockerAssignee: Lokesh Mandvekar <lsm5>
Status: CLOSED ERRATA QA Contact: atomic-bugs <atomic-bugs>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 7.2CC: dwalsh, lsm5, lsu
Target Milestone: rcKeywords: Extras
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: docker-1.9.1-34.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-05-12 15:18:24 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Ed Santiago 2016-04-26 14:26:02 UTC
docker-common-1.9.1-33.el7 introduces /usr/bin/docker as a wrapper script that selects between docker-current and docker-latest. The exec line currently reads:

   exec ${DOCKERBINARY} $@

The $@ is missing double quotes. It should be: "$@" (double-quote, dollar, at, double-quote). See 'Special Parameters' in bash(1) for really-kind-of-inadequate explanation, but basically, without the double-quotes, you lose information about individual params and/or spaces within params.

Comment 1 Lokesh Mandvekar 2016-04-26 14:43:52 UTC
fix upcoming ...

Comment 2 Daniel Walsh 2016-04-26 14:56:13 UTC
Lokesh can you handle the situation where docker-latest is installed but docker is not?  Or does docker-latest require docker?

Comment 3 Lokesh Mandvekar 2016-04-26 15:01:19 UTC
docker-latest does require docker-common and people could edit /etc/sysconfig/docker to point it to /usr/bin/docker-latest, or do you want this pointing to /usr/bin/docker-latest to be automatic if we only have docker-common and docker-latest installed?

Comment 4 Daniel Walsh 2016-04-26 17:06:43 UTC
Well docker command will fail if there is nothing set in /etc/sysconfig/docker.  Which might be fine, but we should enhance the script to point this out as an error. Or for now make the script look for /usr/bin/docker-common followed by searching for /usr/bin/docker-latest.

We still have an /etc/sysconfig/docker-latest, correct?

Comment 5 Lokesh Mandvekar 2016-04-26 17:12:25 UTC

(In reply to Daniel Walsh from comment #4)
> Well docker command will fail if there is nothing set in
> /etc/sysconfig/docker.  Which might be fine, but we should enhance the
> script to point this out as an error. Or for now make the script look for
> /usr/bin/docker-common followed by searching for /usr/bin/docker-latest.

See: https://bugzilla.redhat.com/show_bug.cgi?id=1330622#c4

> 
> We still have an /etc/sysconfig/docker-latest, correct?

Yes

Also, should DOCKERBINARY be set in a new /etc/sysconfig/docker-common instead, or does it suffice to have it in /etc/sysconfig/docker itself (latter means less work for me)

Comment 7 Daniel Walsh 2016-04-26 17:59:58 UTC
Just put the entry in /etc/sysconfig/docker

Comment 9 Luwen Su 2016-05-01 03:46:06 UTC
In docker-1.9.1-38.el7.x86_64
#cat /usr/bin/docker
exec ${DOCKERBINARY} "$@"

Move to verified

Comment 11 errata-xmlrpc 2016-05-12 15:18:24 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/RHSA-2016-1034.html