Nicolas Iooss <nicolas.iooss@xxxxxxx> writes:
> On Sat, Jan 5, 2019 at 8:39 PM Chris PeBenito <pebenito@xxxxxxxx> wrote:
>>
>> On 1/4/19 2:51 AM, Russell Coker wrote:
>> > This patch has interface changes related to systemd support as well as policy
>> > that uses the new interfaces.
>> > [...]
>> > Index: refpolicy-2.20180701/policy/modules/system/logging.te
>> > ===================================================================
>> > --- refpolicy-2.20180701.orig/policy/modules/system/logging.te
>> > +++ refpolicy-2.20180701/policy/modules/system/logging.te
>> > @@ -541,15 +541,19 @@ ifdef(`init_systemd',`
>> > dev_read_urand(syslogd_t)
>> > dev_write_kmsg(syslogd_t)
>> >
>> > + domain_getattr_all_domains(syslogd_t)
>> > domain_read_all_domains_state(syslogd_t)
>> >
>> > init_create_pid_dirs(syslogd_t)
>> > init_daemon_pid_file(syslogd_var_run_t, dir, "syslogd")
>> > + init_getattr(syslogd_t)
>> > init_rename_pid_files(syslogd_t)
>> > init_delete_pid_files(syslogd_t)
>> > init_dgram_send(syslogd_t)
>> > init_read_pid_pipes(syslogd_t)
>> > init_read_state(syslogd_t)
>> > + # for /run/systemd/units/invocation:* links
>> > + init_read_unit_links(syslogd_t)
>> >
>> > systemd_manage_journal_files(syslogd_t)
>> >
>
> This change has not been merged and I see the relevant AVC on an Arch
> Linux virtual machine (using systemd 239.370):
>
> type=AVC msg=audit(1546723651.696:2091): avc: denied { read } for
> pid=240 comm="systemd-journal" name="invocation:user@1000.service"
> dev="tmpfs" ino=17614 scontext=system_u:system_r:syslogd_t
> tcontext=system_u:object_r:init_var_run_t tclass=lnk_file permissive=0
> type=AVC msg=audit(1546723651.799:2092): avc: denied { read } for
> pid=240 comm="systemd-journal" name="invocation:dbus.service"
> dev="tmpfs" ino=12542 scontext=system_u:system_r:syslogd_t
> tcontext=system_u:object_r:init_var_run_t tclass=lnk_file permissive=0
This should be ok to allow, afaik only journald reads these
symlinks.
>
> What prevented init_read_unit_links(syslogd_t) from being added?
>
> Nicolas
>
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Dominick Grift
