Russell Coker <russell@xxxxxxxxxxxx> writes:
> On Thursday, 24 December 2020 7:37:50 PM AEDT Dominick Grift wrote:
>> > To enable "machinectl shell" on recent versions of systemd we need
>> > something like the above policy (which is not complete or ideal, still
>> > doesn't work so no point polishing it) and something for the below. What
>> > is the below about?
>> this should be thoroughly addressed. machined creates a login pty that
>> gets relabeled on login as per type_change rules.
>
> Currently it's not being relabeled on Debian, but that's a separate issue.
Maybe the required type_change rules arent present?
>
>> > type=USER_AVC msg=audit(1608759091.934:1799): pid=324 uid=108
>> > auid=4294967295 ses=4294967295
>> > subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc: denied {
>> > 0x2 } for msgtype=error
>> > error_name=org.freedesktop.DBus.Error.FileNotFound dest=:1.18 spid=2642
>> > tpid=2706 scontext=system_u:system_r:systemd_machined_t:s0
>> > tcontext=bofh:sysadm_r:sysadm_t:s0-s0:c0.c1023 tclass=(null) permissive=0
>> > exe="/usr/bin/dbus-daemon" sauid=108 hostname=? addr=?
>> > terminal=?'UID="messagebus" AUID="unset" SAUID="messagebus"
>>
>> Yes i noticed the above as well on debian with dbus-daemon, i dont see
>> any of these on fedora with dbus-broker
>>
>> By the way we probably shouldnt use the same dbus policy for both
>> dbus-daemon and dbus-broker because theyre pretty different.
>>
>> * dbus-broker does not check method returns (dbus-daemon does)
>> * dbus-broker is systemd specific (dbus activation works via systemd)
>
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892001
>
> We have work in progress on dbus-broker in Debian. Would it make sense to
> only support dbus-broker in SE Linux policy? Being forced to use only 1 of
> the 2 dbus programs (and the newer and faster 1 of the 2) is a very small
> trade-off, smaller than some of the other trade-offs for running SE Linux.
should probably be able to support both (conditionally) but could get messy
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Dominick Grift
