#define MAP_SHARED 0x01 /* Share changes */
#define MAP_PRIVATE 0x02 /* Changes are private */
+/* File perms */
+#ifndef S_IRGRP
+# define S_IRGRP 0
+#endif
+#ifndef S_IWGRP
+# define S_IWGRP 0
+#endif
+
/* Windows 64-bit access macros */
#define LODWORD(x) ((DWORD)((DWORDLONG)(x)))
#define HIDWORD(x) ((DWORD)(((DWORDLONG)(x) >> 32) & 0xffffffff))