diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 218de87..477b906 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -237,10 +237,10 @@ static int	recovery_min_apply_delay = 0;
 static TimestampTz recoveryDelayUntilTime;
 
 /* options taken from recovery.conf for XLOG streaming */
-static bool StandbyModeRequested = false;
-static char *PrimaryConnInfo = NULL;
-static char *PrimarySlotName = NULL;
-static char *TriggerFile = NULL;
+bool StandbyModeRequested = false;
+char *PrimaryConnInfo = NULL;
+char *PrimarySlotName = NULL;
+char *TriggerFile = NULL;
 
 /* are we currently in standby mode? */
 bool		StandbyMode = false;
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index f6df077..6caadff 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -864,6 +864,15 @@ static struct config_bool ConfigureNamesBool[] =
 		NULL, NULL, NULL
 	},
 	{
+		{"standby_mode", PGC_INTERNAL, WAL_SETTINGS,
+			gettext_noop("TODO"),
+			NULL
+		},
+		&StandbyModeRequested,
+		false,
+		NULL, NULL, NULL
+	},
+	{
 		{"fsync", PGC_SIGHUP, WAL_SETTINGS,
 			gettext_noop("Forces synchronization of updates to disk."),
 			gettext_noop("The server will use the fsync() system call in several places to make "
@@ -3275,6 +3284,37 @@ static struct config_string ConfigureNamesString[] =
 	},
 
 	{
+		{"primary_conninfo", PGC_INTERNAL, WAL_SETTINGS,
+			gettext_noop("TODO"),
+			NULL,
+			GUC_SUPERUSER_ONLY
+		},
+		&PrimaryConnInfo,
+		NULL,
+		NULL, NULL, NULL
+	},
+
+	{
+		{"primary_slot_name", PGC_INTERNAL, WAL_SETTINGS,
+			gettext_noop("TODO"),
+			NULL
+		},
+		&PrimarySlotName,
+		NULL,
+		NULL, NULL, NULL
+	},
+
+	{
+		{"trigger_file", PGC_INTERNAL, WAL_SETTINGS,
+			gettext_noop("TODO"),
+			NULL
+		},
+		&TriggerFile,
+		NULL,
+		NULL, NULL, NULL
+	},
+
+	{
 		{"application_name", PGC_USERSET, LOGGING_WHAT,
 			gettext_noop("Sets the application name to be reported in statistics and logs."),
 			NULL,
diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h
index 138deaf..eeb9461 100644
--- a/src/include/access/xlog.h
+++ b/src/include/access/xlog.h
@@ -100,6 +100,11 @@ extern bool fullPageWrites;
 extern bool wal_log_hints;
 extern bool log_checkpoints;
 
+extern bool StandbyModeRequested;
+extern char *PrimaryConnInfo;
+extern char *PrimarySlotName;
+extern char *TriggerFile;
+
 /* WAL levels */
 typedef enum WalLevel
 {