Index: src/backend/distributed/commands/multi_copy.c
--- src/backend/distributed/commands/multi_copy.c.orig
+++ src/backend/distributed/commands/multi_copy.c
@@ -43,6 +43,7 @@
  *-------------------------------------------------------------------------
  */
 
+#include <sys/stat.h> /* S_IRUSR and S_IWUSR constants */
 #include <arpa/inet.h> /* for htons */
 #include <netinet/in.h> /* for htons */
 #include <string.h>
