- sock = FD_TO_SOCKET (fd);
- r = ioctlsocket (sock, req, buf);
- if (r < 0)
- set_winsock_errno ();
+ /* Cast 'request' so that when the system's ioctl function takes a 64-bit
+ request argument, the value gets zero-extended, not sign-extended. */
+ return ioctl (fd, (unsigned int) request, buf);
+}
+
+#else /* mingw */
+
+# include <errno.h>
+
+/* Get HANDLE. */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+# include "fd-hook.h"
+/* Get _get_osfhandle. */
+# include "msvc-nothrow.h"
+
+static int
+primary_ioctl (int fd, int request, void *arg)
+{
+ /* We don't support FIONBIO on pipes here. If you want to make pipe
+ fds non-blocking, use the gnulib 'nonblocking' module, until
+ gnulib implements fcntl F_GETFL / F_SETFL with O_NONBLOCK. */
+
+ if ((HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE)
+ errno = ENOSYS;
+ else
+ errno = EBADF;
+ return -1;
+}