If SELinux is enabled, log the context on startup.

--- httpd-2.1.10/server/core.c.selinux
+++ httpd-2.1.10/server/core.c
@@ -51,6 +51,8 @@
 
 #include "mod_so.h" /* for ap_find_loaded_module_symbol */
 
+#include <selinux/selinux.h>
+
 /* LimitRequestBody handling */
 #define AP_LIMIT_REQ_BODY_UNSET         ((apr_off_t) -1)
 #define AP_DEFAULT_LIMIT_REQ_BODY       ((apr_off_t) 0)
@@ -3745,6 +3747,26 @@
     }
 #endif
 
+    {
+        static int already_warned = 0;
+        int is_enabled = is_selinux_enabled() > 0;
+        
+        if (is_enabled && !already_warned) {
+            security_context_t con;
+            
+            if (getcon(&con) == 0) {
+                
+                ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, NULL,
+                             "SELinux policy enabled; "
+                             "httpd running as context %s", con);
+                
+                already_warned = 1;
+                
+                freecon(con);
+            }
+        }
+    }
+
     return OK;
 }
 
--- httpd-2.1.10/configure.in.selinux
+++ httpd-2.1.10/configure.in
@@ -382,6 +382,10 @@
 dnl confirm that a void pointer is large enough to store a long integer
 APACHE_CHECK_VOID_PTR_LEN
 
+AC_CHECK_LIB(selinux, is_selinux_enabled, [
+   APR_ADDTO(AP_LIBS, [-lselinux])
+])
+
 dnl ## Check for the tm_gmtoff field in struct tm to get the timezone diffs
 AC_CACHE_CHECK([for tm_gmtoff in struct tm], ac_cv_struct_tm_gmtoff,
 [AC_TRY_COMPILE([#include <sys/types.h>