Merge pull request #15735 from poettering/pam-snippet-update

Slightly update our shipped and suggested PAM snippets, so that pam_systemd_home.so is more likely to just work

man/pam_systemd.xml

@@ -309,17 +309,22 @@ pam_set_data(handle, "systemd.runtime_max_sec", (void *)"3600", cleanup);
 
     <programlisting>#%PAM-1.0
 auth      sufficient pam_unix.so
+-auth     sufficient pam_systemd_home.so
 auth      required   pam_deny.so
 
 account   required   pam_nologin.so
+-account  sufficient pam_systemd_home.so
 account   sufficient pam_unix.so
 account   required   pam_permit.so
 
+-password sufficient pam_systemd_home.so
 password  sufficient pam_unix.so sha512 shadow try_first_pass try_authtok
 password  required   pam_deny.so
 
+-session  optional   pam_keyinit.so revoke
 -session  optional   pam_loginuid.so
--session optional   pam_systemd.so
+-session  optional   pam_systemd_home.so
+<command>-session  optional   pam_systemd.so</command>
 session   required   pam_unix.so</programlisting>
   </refsect1>
 

man/pam_systemd_home.xml

@@ -116,21 +116,21 @@
 
     <programlisting>#%PAM-1.0
 auth      sufficient pam_unix.so
--auth     sufficient pam_systemd_home.so
+<command>-auth     sufficient pam_systemd_home.so</command>
 auth      required   pam_deny.so
 
 account   required   pam_nologin.so
--account  sufficient pam_systemd_home.so
+<command>-account  sufficient pam_systemd_home.so</command>
 account   sufficient pam_unix.so
 account   required   pam_permit.so
 
--password sufficient pam_systemd_home.so
+<command>-password sufficient pam_systemd_home.so</command>
 password  sufficient pam_unix.so sha512 shadow try_first_pass try_authtok
 password  required   pam_deny.so
 
 -session  optional   pam_keyinit.so revoke
 -session  optional   pam_loginuid.so
--session  optional   pam_systemd_home.so
+<command>-session  optional   pam_systemd_home.so</command>
 -session  optional   pam_systemd.so
 session   required   pam_unix.so</programlisting>
   </refsect1>

src/login/systemd-user.m4

@@ -2,11 +2,19 @@
 #
 # Used by systemd --user instances.
 
-account required pam_unix.so
+m4_ifdef(`ENABLE_HOMED',
+-account sufficient pam_systemd_home.so
+)m4_dnl
+account sufficient pam_unix.so
+account required pam_permit.so
+
 m4_ifdef(`HAVE_SELINUX',
 session required pam_selinux.so close
 session required pam_selinux.so nottys open
 )m4_dnl
 session required pam_loginuid.so
 session optional pam_keyinit.so force revoke
+m4_ifdef(`ENABLE_HOMED',
+-session optional pam_systemd_home.so
+)m4_dnl
 session optional pam_systemd.so