[Arm-dev] selinux - wiki typo and setting prior to firstboot

[Robert Moskowitz]

On 12/23/2015 04:50 AM, Fabian Arrotin wrote:
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> On 21/12/15 15:06, Robert Moskowitz wrote:
>> Minor typo in the wiki on selinux.  It says to edit:
>>
>> /etc/syconfig/selinux
>>
>> That should be:
>>
>> /etc/sysconfig/selinux
>>
> Updated, thanks
>
>> It took about 4 min on the reboot on my Cubieboard2, but of course
>> it depends what you have added since install.
>>
>> I would like to enforce selinux from the firstboot.  Seems I can
>> mount the image and make these 3 changes prior to first boot and
>> the system would come up inititally with selinux enforced?
> Yes, and our plan was to enforce that, but due to the long time needed
> to relabel the filesystem, we preferred to let it in permissive mode,
> and let the users decide if they wanted to to enforce it or not . To
> be clear , I'd really want to have it in enforcing in the default
> install, but that 5 minutes delay would be a "NO GO" for people trying
> CentOS Userland for the first time (and people not even reading the
> doc about the reason why, etc ..)
>
>> And looking at the fedora-arm-installer and what we would want in a
>>   centos-arm-installer, the Fedora install has to disable selinux.
>> The Centos install would have to enforce selinux.  So these edits
>> that are in the wiki would need to be scripted and then, of course
>> the instructions from the Fedora wiki cannot be directly brought
>> over to the Centos wiki as we are doing the reverse of them in this
>> case.
> Something to think about, but if adding those 5 minutes would still be
> needed, then I'd say that we'd stick with current policy : permissive
> and people can switch to enforcing with a complete relabel

With my suggestion, your image is still in permissive and only if the 
user selects the 'enforce' option on the command line will it switch at 
first boot.  This will be the user that is more experienced or working 
in a tough environment from the get go (university computer lab).  Come 
to think of it, an option that disables SSHD might be smart too!

And if this option is selected you can pause the user with a 'do you 
really want to wait up to 5 min plus a reboot during firstboot'? prompt.

>
>> Which brings the question of is the resize method used in the
>> fedora-arm-installer the same as what we would use in the centos
>> install?
>>
>> Could I specify both of switch selinux to enforce AND resize the
>> partition in the install to take affect on firstboot?
>>
> - From my initial tests in the past, yes, you can : it will reboot
> anyway, but I don't remember which one will be done first (have to
> verify which one is started first : relabeling or autoresize)

Yeap that is what it did.  And relabeling before autoresize for what it 
is worth.

> PS : I'm in a kind of "offline" mode those two weeks, reason why I'll
> be slow to react, but hopefully back at full steam soon :-)

Enjoy your holidays/vacation.  Mine was the past week.