Yes, I ran the restorecon command as you described it ('restorecon -R -v
~/.pki') and things were fine again. So I guess my .pki settings were
wrongly changed at some point in the past, right?
I'll keep the setsebool method for the next time chrome breaks, I'm afraid
in a few updates.
Thanks,
Gianluca Ortelli
On Mon, Oct 27, 2014 at 4:39 PM, Daniel J Walsh <dwalsh(a)redhat.com> wrote:
Did you run the restorecon command?
It looks like chrome is allowed to read files labeled home_cert_t but
might be blocked form other types.
You could also turn off the chrome security using a boolean
setsebool -P unconfined_chrome_sandbox_transition 1
Which would do the equivalent of what you did in relabelling the
executable to bin_t.
On 10/27/2014 04:07 AM, Gian Luca Ortelli wrote:
Hi,
my original fix was more coarse grained than this: I set the type of the
chrome-sandbox to the generic SELinux executable (was it bin_t?).
Anyway, I tried your suggestion (a chrome update broke my fix several
days ago, and I was back to 'setenforce 0' mode) and it also solves the
problem.
Any ideas on why I don't get an explicit error message? Something like
'selinux is preventing chrome-sandbox from accessing .pki'? Or is the
problem too indirect for selinux to figure out what's going wrong exactly?
Kind regards,
Gianluca Ortelli
On Fri, Oct 24, 2014 at 7:22 PM, Daniel J Walsh <dwalsh(a)redhat.com> wrote:
>
> On 10/23/2014 02:28 AM, Gian Luca Ortelli wrote:
>
> Hi,
>
> I recently had to do some selinux tuning to have chrome correctly start
> on my fedora 20 box. I googled around and eventually found the correct type
> to apply to the chrome executable in order to make it work.
>
> So the problem is solved, but the error messages that I got were much
> less informative than I expected. After watching
>
https://www.youtube.com/watch?v=MxjenQ31b70 on selinux configuration, I
> was expecting messages in a format like "selinux is preventing X from
> access on directoy Y", but instead...
>
> 'journal -f' provided nothing useful; 'tail -f
> /var/log/audit/audit.log' showed a couple of log lines which actually
> mentioned chrome, but in too generic a manner (see below):
>
> --------------------------------------
> type=SYSCALL msg=audit(1413532031.170:387): arch=c000003e syscall=56
> success=yes exit=2394 a0=60000011 a1=0 a2=0 a3=0 items=0 ppid=2382 pid=2393
> auid=1000 uid=1000 gid=1000 euid=0 suid=0 fsuid=0 egid=1000 sgid=1000
> fsgid=1000 tty=(none) ses=1 comm="chrome-sandbox"
> exe="/opt/google/chrome/chrome-sandbox"
> subj=unconfined_u:unconfined_r:chrome_sandbox_t:s0-s0:c0.c1023 key=(null)
> type=PROCTITLE msg=audit(1413532031.170:387):
>
proctitle=2F6F70742F676F6F676C652F6368726F6D652F6368726F6D652D73616E64626F78002F6F70742F676F6F676C652F6368726F6D652F6368726F6D65002D2D747970653D7A79676F7465
> type=ANOM_ABEND msg=audit(1413532031.195:388): auid=1000 uid=1000
> gid=1000 ses=1
> subj=unconfined_u:unconfined_r:chrome_sandbox_t:s0-s0:c0.c1023 pid=2394
> comm="chrome" exe="/opt/google/chrome/chrome" sig=11
> --------------------------------------
>
> Before I fixed the problem, launching google-chrome from command line
> resulted in an error message about the impossibility of creating
> directory .pki/nssdb in my home. No mention of this directory name in the
> audit.
>
> And to finish, the SELinux troubleshooting tool didn't show anything at
> all.
>
> Why don't I see a richer diagnostics? Am I missing some configuration?
>
>
> Kind regards,
> Gianluca Ortelli
>
>
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>
> What exactly did you do to fix the problem? Did you have to fix the
> labels on .pki? restorecon -R -v ~/.pki
>
>
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