Upstream-Status: in trunk not in 2.4.x

diff --git a/configure.in b/configure.in
index 74015ca..8c0ee10 100644
--- httpd-2.4.54/modules/arch/unix/config5.m4.selinux
+++ httpd-2.4.54/modules/arch/unix/config5.m4
@@ -23,6 +23,11 @@
     AC_MSG_WARN([Your system does not support systemd.])
     enable_systemd="no"
   else
+    AC_CHECK_LIB(selinux, is_selinux_enabled, [
+      AC_DEFINE(HAVE_SELINUX, 1, [Defined if SELinux is supported])
+      APR_ADDTO(MOD_SYSTEMD_LDADD, [-lselinux])
+    ])
+  
     APR_ADDTO(MOD_SYSTEMD_LDADD, [$SYSTEMD_LIBS])
   fi
 ])
--- httpd-2.4.54/modules/arch/unix/mod_systemd.c.selinux
+++ httpd-2.4.54/modules/arch/unix/mod_systemd.c
@@ -35,6 +35,10 @@
 #include <unistd.h>
 #endif
 
+#ifdef HAVE_SELINUX
+#include <selinux/selinux.h>
+#endif
+
 APR_DECLARE_OPTIONAL_FN(int,
                         ap_find_systemd_socket, (process_rec *, apr_port_t));
 
@@ -70,6 +74,20 @@
     return apr_psprintf(p, "%s port %u", addr, sa->port);
 }
 
+#ifdef HAVE_SELINUX
+static void log_selinux_context(void)
+{
+    char *con;
+
+    if (is_selinux_enabled() && getcon(&con) == 0) {
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, NULL,
+                     "SELinux policy enabled; "
+                     "httpd running as context %s", con);
+        freecon(con);
+    }
+}
+#endif
+
 /* Report the service is ready in post_config, which could be during
  * startup or after a reload.  The server could still hit a fatal
  * startup error after this point during ap_run_mpm(), so this is
@@ -87,6 +105,10 @@
     if (ap_state_query(AP_SQ_MAIN_STATE) == AP_SQ_MS_CREATE_PRE_CONFIG)
         return OK;
 
+#ifdef HAVE_SELINUX
+    log_selinux_context();
+#endif
+    
     for (lr = ap_listeners; lr; lr = lr->next) {
         char *s = dump_listener(lr, ptemp);