#define WIMLIB_WRITE_FLAG_HEADER_AT_END 0x10000000
#define WIMLIB_WRITE_FLAG_FILE_DESCRIPTOR 0x08000000
#define WIMLIB_WRITE_FLAG_USE_EXISTING_TOTALBYTES 0x04000000
-#define WIMLIB_WRITE_FLAG_NO_METADATA 0x02000000
-#define WIMLIB_WRITE_MASK_PUBLIC 0x01ffffff
+#define WIMLIB_WRITE_FLAG_NO_METADATA 0x02000000
+#define WIMLIB_WRITE_FLAG_OVERWRITE 0x01000000
+#define WIMLIB_WRITE_MASK_PUBLIC 0x00ffffff
#if defined(HAVE_SYS_FILE_H) && defined(HAVE_FLOCK)
extern int