Correct way to use booleans

[Jayson Hurst]

So it sounds like booleans are meant to be set by the admin if they need that sort of thing on.  In the case of samba if the admin wanted to share out user directories they would need to turn on a boolean that would allow them to do so like samba_enable_home_dirs.

I see a few different files in /tmp that are labelled as tmp_t, but the ones I care about are the krb5cc_X files.  If I use kinit to generate the krb5cc file it is labelled as user_tmp_t but if I login through ssh,local_login, gdm, etc... they get created as tmp_t.  Seeing that my daemon is responsible for kerberos login I can only guess that it is generating them incorrectly.  In my SELinux module should I have a transition for files created in tmp to have them created as user_tmp_t or is there a better way?

> Date: Thu, 20 Feb 2014 08:03:44 -0500
> From: dwalsh at redhat.com
> To: swazup at hotmail.com; selinux at lists.fedoraproject.org
> Subject: Re: Correct way to use booleans
> 
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> On 02/19/2014 08:20 PM, Jayson Hurst wrote:
> > Audit2Allow is suggesting that a boolean be turned on.
> > 
> > #!!!! This avc can be allowed using the boolean 'allow_ypbind'
> > 
> > allow vasd_t ldap_port_t:tcp_socket name_bind;
> > 
> > setsebool -P allow_ypbind 1
> > 
> > Should this boolean be enabled via my domains policy, or is this something
> > the system administrator should turn on if they know they will be using
> > NIS?
> > 
> Only the system admin should turn this on in an NIS environment.  This is an
> incredibly permissive boolean.  Allows all processes to use any network port.
> 
> > The same question can be asked for other things like http and samba. #!!!!
> > This avc can be allowed using one of the these booleans: #
> > samba_export_all_ro, samba_export_all_rw
> > 
> > allow smbd_t tmp_t:file getattr;
> There really should not be tmp_t files on a system.  Any idea how this file
> got created?  smbd_t in permissive mode?
> 
> > #!!!! This avc can be allowed using one of the these booleans: #
> > samba_create_home_dirs, samba_export_all_rw
> > 
> > allow smbd_t user_home_dir_t:dir { write create add_name };
> > 
> > setsebool -P samba_export_all_rw 1
> > 
> > 
> > 
> > 
> > 
> > -- selinux mailing list selinux at lists.fedoraproject.org 
> > https://admin.fedoraproject.org/mailman/listinfo/selinux
> > 
> If a user is exporting the home dirs it would be better to use
> samba_enable_home_dirs
> 
> But if he is sharing the entire system then use samba_export_all_rw
> 
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