Add policy for /usr/libexec/samba/samba-bgqd

samba-bgqd is an helper program added in samba v4.20.2 to be spawned by
smbd or spoolssd to perform jobs like updating the printer list or other
management tasks asynchronously on demand. It is not intended to be
called by users or administrators.

Resolves: RHEL-53124

policy/modules/contrib/samba.fc

@@ -19,6 +19,7 @@
 /usr/lib/systemd/system/winbind.*   --  gen_context(system_u:object_r:samba_unit_file_t,s0)
 
 /usr/libexec/samba/rpcd_lsad	--	gen_context(system_u:object_r:winbind_rpcd_exec_t,s0)
+/usr/libexec/samba/samba-bgqd	--	gen_context(system_u:object_r:samba_bgqd_exec_t,s0)
 /usr/libexec/samba/samba-dcerpcd --	gen_context(system_u:object_r:winbind_rpcd_exec_t,s0)
 
 /usr/bin/net			--	gen_context(system_u:object_r:samba_net_exec_t,s0)

policy/modules/contrib/samba.if

@@ -1118,3 +1118,22 @@ interface(`samba_domtrans_winbind_rpcd',`
 	corecmd_search_bin($1)
 	domtrans_pattern($1, winbind_rpcd_exec_t, winbind_rpcd_t)
 ')
+
+########################################
+## <summary>
+##	Execute samba-bgqd in the caller domain.
+## </summary>
+## <param name="domain">
+##	<summary>
+##	Domain allowed accesss.
+##	</summary>
+## </param>
+#
+interface(`samba_exec_bgqd',`
+	gen_require(`
+		type samba_bgqd_exec_t;
+	')
+
+	corecmd_search_bin($1)
+	can_exec($1, samba_bgqd_exec_t)
+')

policy/modules/contrib/samba.te

@@ -134,6 +134,11 @@ type samba_gpupdate_exec_t;
 application_domain(samba_gpupdate_t, samba_gpupdate_exec_t)
 role system_r types samba_gpupdate_t;
 
+type samba_bgqd_t;
+type samba_bgqd_exec_t;
+application_domain(samba_bgqd_t, samba_bgqd_exec_t)
+role system_r types samba_bgqd_t;
+
 type smbcontrol_t;
 type smbcontrol_exec_t;
 application_domain(smbcontrol_t, smbcontrol_exec_t)
@@ -300,6 +305,15 @@ optional_policy(`
 	certmonger_domtrans(samba_gpupdate_t)
 ')
 
+########################################
+#
+# samba-bgqd Local policy
+#
+
+read_files_pattern(samba_bgqd_t, samba_etc_t, samba_etc_t)
+manage_files_pattern(samba_bgqd_t, samba_log_t, samba_log_t)
+
+
 ########################################
 #
 # smbd Local policy