bootstrap: take advantage of POSIX shell features

[gnulib.git] / lib / ioctl.c

diff --git a/lib/ioctl.c b/lib/ioctl.c
index 8701b7a..4a2fd39 100644 (file)
--- a/lib/ioctl.c
+++ b/lib/ioctl.c
@@ -46,7 +46,13 @@ rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */)
 
 # 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)
@@ -55,7 +61,10 @@ primary_ioctl (int fd, int request, void *arg)
      fds non-blocking, use the gnulib 'nonblocking' module, until
      gnulib implements fcntl F_GETFL / F_SETFL with O_NONBLOCK.  */
 
-  errno = ENOSYS;
+  if ((HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE)
+    errno = ENOSYS;
+  else
+    errno = EBADF;
   return -1;
 }