fix up lfs64 junk for preadv/pwritev

include/sys/uio.h

@@ -27,6 +27,11 @@ ssize_t writev (int, const struct iovec *, int);
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 ssize_t preadv (int, const struct iovec *, int, off_t);
 ssize_t pwritev (int, const struct iovec *, int, off_t);
+#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
+#define preadv64 preadv
+#define pwritev64 pwritev
+#define off64_t off_t
+#endif
 #endif
 
 #ifdef _GNU_SOURCE

src/unistd/preadv.c

@@ -1,4 +1,4 @@
-#define _GNU_SOURCE
+#define _BSD_SOURCE
 #include <sys/uio.h>
 #include <unistd.h>
 #include "syscall.h"

src/unistd/pwritev.c

@@ -1,4 +1,4 @@
-#define _GNU_SOURCE
+#define _BSD_SOURCE
 #include <sys/uio.h>
 #include <unistd.h>
 #include "syscall.h"