[selinux] Re: Conflict between local module and local fcontext
Robin Lee Powell
rlpowell at digitalkingdom.org
Wed Jul 29 10:29:16 UTC 2015
I removed this line:
/srv/lojban/irclogs(/.*)? system_u:object_r:lojban_logger_logs_t:s0
from the module's .fc file, since that was the only other use of
lojban_logger_logs_t , and that line was non-functional as
previously described, and now the fcontext command works.
Yay!, but I don't get it at all.
On Wed, Jul 29, 2015 at 03:24:50AM -0700, Robin Lee Powell wrote:
> rlpowell at jukni> rpm -q policycoreutils
> policycoreutils-2.3-17.fc22.x86_64
> rlpowell at jukni> rpm -q selinux-policy
> selinux-policy-3.13.1-128.6.fc22.noarch
> rlpowell at 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 at jukni>
>
> I've got other local mods installed, but I don't know how any of
> them could be relevant.
>
> What does that error even *mean*?
>
> On Wed, Jul 29, 2015 at 10:32:25AM +0200, Lukas Vrabec wrote:
> > 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 at jukni> rpm -q selinux-policy
> > >selinux-policy-3.13.1-128.1.fc22.noarch
> > >rlpowell at jukni> rpm -q policycoreutils
> > >policycoreutils-2.3-16.fc22.x86_64
> > >rlpowell at 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 at digitalkingdom.org>
> > >>>>>>>To: selinux at lists.fedoraproject.org
> > >>>>>>>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 at 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 at 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)
> > >>>--
> > >>>selinux mailing list
> > >>>selinux at lists.fedoraproject.org
> > >>>https://admin.fedoraproject.org/mailman/listinfo/selinux
> > >>--
> > >>Lukas Vrabec
> > >>SELinux Solutions
> > >>Red Hat, Inc.
> > >>
> > >>--
> > >>selinux mailing list
> > >>selinux at lists.fedoraproject.org
> > >>https://admin.fedoraproject.org/mailman/listinfo/selinux
> >
> > --
> > Lukas Vrabec
> > SELinux Solutions
> > Red Hat, Inc.
> >
> > --
> > selinux mailing list
> > selinux at lists.fedoraproject.org
> > https://admin.fedoraproject.org/mailman/listinfo/selinux
>
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