Re: [selinux] Re: Conflict between local module and local fcontext

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Please could you update selinux-policy package and try it again?
I tried reproduce it and I cannot see your issue.

On 07/29/2015 10:01 AM, Robin Lee Powell wrote:
rlpowell@jukni> rpm -q selinux-policy
selinux-policy-3.13.1-128.1.fc22.noarch
rlpowell@jukni> rpm -q policycoreutils
policycoreutils-2.3-16.fc22.x86_64
rlpowell@jukni>

On Wed, Jul 29, 2015 at 09:59:43AM +0200, Lukas Vrabec wrote:
Hi Robin,
Could you attach output of:
$ rpm -q selinux-policy
$ rpm -q policycoreutils

Thank you!

On 07/29/2015 09:03 AM, Robin Lee Powell wrote:
On Tue, Jul 28, 2015 at 12:07:51AM -0700, Robin Lee Powell wrote:
On Mon, Jul 27, 2015 at 08:29:29PM -0700, Robin Lee Powell wrote:
On Mon, Jul 27, 2015 at 07:45:11PM -0400, Simon Sekidde wrote:
----- Original Message -----
From: "Robin Lee Powell" <rlpowell@xxxxxxxxxxxxxxxxxx>
To: selinux@xxxxxxxxxxxxxxxxxxxxxxx
Sent: Monday, July 27, 2015 6:05:51 PM
Subject: Conflict between local module and local fcontext


So I have a custom module that includes:

   type lojban_logger_t;
   type lojban_logger_exec_t;

   application_domain( lojban_logger_t, lojban_logger_exec_t)
   init_daemon_domain(lojban_logger_t, lojban_logger_exec_t)

(not sure if those are redundant?) and:

   /srv/lojban/irclogs(/.*)?      system_u:object_r:lojban_logger_t:s0

I've made a variety of changes with "semodule fcontext", including:

   /srv/lojban    system_u:object_r:httpd_user_content_t:s0
   /srv/lojban(/.*)?    system_u:object_r:httpd_user_content_t:s0

As a result, the changes in my module are ignored, and the files
end up with httpd_user_content_t

So I tried:

   $ sudo semanage fcontext -a -t lojban_logger_t '/srv/lojban/irclogs(/.*)?'
   ValueError: Type lojban_logger_t is invalid, must be a file or device type

Uhh.

I guess this means that the custom module's types can't be seen by
semanage?

So, what's the correct solution here?

1) Define a new type that is usable for log files in the .te

type logjban_logger_log_t;
logging_log_type(logjban_logger_log_t)

2) Add this label to the path in the .fc

/srv/lojban/irclogs(/.*)?      system_u:object_r:logjban_logger_log_t:s0
Unless I'm missing something, this won't help at all; the semanage
fcontext rule will win, and they'll end up with httpd_user_content_t
per the rule for /srv/lojban(/.*)? , because semanage fcontext rules
*always* win over module rules.
Ah, I see what you're saying; that way at least I'd *have* a file
type, that I could then add with semanage.  I'll try that, thanks.
So I did that, and now:

rlpowell@jukni> sudo semanage fcontext -a -t lojban_logger_logs_t '/srv/lojban/irclogs(/.*)?'
libsemanage.dbase_llist_query: could not query record value (No such file or directory).
OSError: No such file or directory
rlpowell@jukni>

Here's the policy:

     policy_module(MYLOCAL_lojbanlogger, 1.6.0)
     ########################################
     #
     # Declarations
     #
     type lojban_logger_t;
     type lojban_logger_logs_t;
     type lojban_logger_exec_t;
     gen_require(`
       type httpd_t;
       type setfiles_t;
       type unconfined_t;
       type staff_t;
     ')
     #============= lojban_logger_t ==============
     manage_dirs_pattern(   lojban_logger_t, lojban_logger_logs_t, lojban_logger_logs_t)
     manage_files_pattern(  lojban_logger_t, lojban_logger_logs_t, lojban_logger_logs_t)
     # Be a file type and a domain
     application_domain( lojban_logger_t, lojban_logger_exec_t )
     # File type
     logging_log_file(lojban_logger_logs_t)
     # Be an init/systemd daemon
     init_daemon_domain(lojban_logger_t, lojban_logger_exec_t)
     # connect to ircd
     corenet_tcp_connect_ircd_port(lojban_logger_t)
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https://admin.fedoraproject.org/mailman/listinfo/selinux
--
Lukas Vrabec
SELinux Solutions
Red Hat, Inc.

--
selinux mailing list
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https://admin.fedoraproject.org/mailman/listinfo/selinux

--
Lukas Vrabec
SELinux Solutions
Red Hat, Inc.

--
selinux mailing list
selinux@xxxxxxxxxxxxxxxxxxxxxxx
https://admin.fedoraproject.org/mailman/listinfo/selinux




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