Re: selinux: AVC postfix and samba

Andrei Borzenkov <[email protected]>
Newsgroups gmane.linux.suse.general
Message-ID <[email protected]>
17.06.2026 15:23, [email protected] wrote:
> On Mittwoch, 17. Juni 2026 08:45:13 Mitteleuropäische Sommerzeit Andrei
> Borzenkov wrote:
>> 17.06.2026 00:44, [email protected] wrote:
>>> Target Objects                /run/samba/winbindd/pipe [
>>> unix_stream_socket ]
>>
>> Anything related to winbind in /etc/nsswitch.conf or
>> /usr/etc/nsswitch.conf?
> 
> Yep, for the samba domain I have
> 
> passwd:   compat winbind systemd
> group:    compat winbind systemd
> shadow:   compat systemd
> 
> in my nsswitch.conf.

Well, the policy already has

postfix_server_domain_template(smtp)

which should grant the postfix_smtp_t access to the objects required for 
NSS. But the context of the /run/samba/winbindd/pipe is wrong - it is 
supposed to be winbind_var_run_t.

leap16:~ # matchpathcon /run/samba/winbindd/pipe
/run/samba/winbindd/pipe	system_u:object_r:winbind_var_run_t:s0
leap16:~ # matchpathcon /var/run/samba/winbindd/pipe
/var/run/samba/winbindd/pipe	system_u:object_r:winbind_var_run_t:s0
leap16:~ #


leap16:~ # ps -Zp 2172
LABEL                               PID TTY          TIME CMD
system_u:system_r:winbind_t:s0     2172 ?        00:00:00 winbindd
leap16:~ # ls -Z /run/samba/winbindd
system_u:object_r:winbind_var_run_t:s0 pipe
leap16:~ #
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