Bug 2111206

+++ This bug was initially created as a clone of Bug #2110012 +++

This is a request to backport the policy fixes to RHEL 9.1.

I'm trying to reopen and re-land this change: https://github.com/coreos/rpm-ostree/pull/2932
which causes rpm-ostreed to be directly systemd socket activated, which will allow us to drop a  big pile of workarounds for previous bugs in the DBus design.

However, this is denied by policy:

Jul 22 17:54:36 cosa-devsh audit[1]: AVC avc:  denied  { create } for  pid=1 comm="systemd" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:install_t:s0 tclass=unix_stream_socket permissive=1
Jul 22 17:54:36 cosa-devsh audit[1]: AVC avc:  denied  { setopt } for  pid=1 comm="systemd" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:install_t:s0 tclass=unix_stream_socket permissive=1
Jul 22 17:54:36 cosa-devsh audit[1]: AVC avc:  denied  { bind } for  pid=1 comm="systemd" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:install_t:s0 tclass=unix_stream_socket permissive=1
Jul 22 17:54:36 cosa-devsh audit[1]: AVC avc:  denied  { listen } for  pid=1 comm="systemd" path="/run/rpm-ostree/client.sock" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:install_t:s0 tclass=unix_stream_socket permissive=1

I keep running into small things like this; please make install_t a strict superset of unconfined_t (i.e. it should just be unconfined_t + mac_admin).

--- Additional comment from Colin Walters on 2022-07-22 20:38:04 UTC ---

Alternatively, perhaps what I may try to do in the future is have rpm-ostree fork a child process copy of itself that is wrapped with e.g. `runcon -t install_t` or so, but that would require changing the policy to drop the install_exec_t for /usr/bin/rpm-ostree which would break older versions, unless we can figure out a way to do this compatibly.

--- Additional comment from Zdenek Pytela on 2022-07-25 13:47:03 UTC ---

Should work in rawhide already:
rawhide# sesearch -A -s init_t -t install_t -c unix_stream_socket -p bind,create,listen,setopt
allow init_t install_t:unix_stream_socket { accept append bind connect connectto create getattr getopt ioctl listen lock read setattr setopt shutdown write };
rawhide# rpm -q selinux-policy
selinux-policy-37.7-1.fc37.noarch

Also note install_t is an unconfined domain, most of possible permissions are already allowed, IPC are one of the exceptions.

--- Additional comment from Colin Walters on 2022-07-25 15:32:46 UTC ---

Thanks!  I'd be nice to ship this in RHEL 9.1 if at all possible; anything I can do to help with that?
I think potentially we can avoid depending on this in F36 lifetime.

--- Additional comment from Zdenek Pytela on 2022-07-26 16:43:29 UTC ---

(In reply to Colin Walters from comment #3)
> Thanks!  I'd be nice to ship this in RHEL 9.1 if at all possible; anything I
> can do to help with that?
> I think potentially we can avoid depending on this in F36 lifetime.

Please clone the bz for RHEL 9 then, but note it is quite late in the development cycle.