X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fioctl.c;h=2e51c92d9a0f3e85a23b6017b7d7aacfd354093c;hb=ab624c1a8f744419fdb653b77250153a3563203f;hp=1d409c6712e9fe063841a6aabc0ee7e4a60a5910;hpb=2169eadded0682b9f32a6c2c8a6b03e3bd39eba4;p=gnulib.git

diff --git a/lib/ioctl.c b/lib/ioctl.c
index 1d409c671..2e51c92d9 100644
--- a/lib/ioctl.c
+++ b/lib/ioctl.c
@@ -1,6 +1,6 @@
 /* ioctl.c --- wrappers for Windows ioctl function
 
-   Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2008-2012 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -37,36 +37,48 @@ rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */)
   buf = va_arg (args, void *);
   va_end (args);
 
-  return ioctl (fd, request, buf);
+  /* 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 */
 
-# define WIN32_LEAN_AND_MEAN
-/* Get winsock2.h. */
-# include <sys/socket.h>
+# include <errno.h>
 
-/* Get set_winsock_errno, FD_TO_SOCKET etc. */
-# include "w32sock.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;
+}
 
 int
-rpl_ioctl (int fd, int req, ...)
+ioctl (int fd, int request, ... /* {void *,char *} arg */)
 {
-  void *buf;
+  void *arg;
   va_list args;
-  SOCKET sock;
-  int r;
 
-  va_start (args, req);
-  buf = va_arg (args, void *);
+  va_start (args, request);
+  arg = va_arg (args, void *);
   va_end (args);
 
-  sock = FD_TO_SOCKET (fd);
-  r = ioctlsocket (sock, req, buf);
-  if (r < 0)
-    set_winsock_errno ();
-
-  return r;
+# if WINDOWS_SOCKETS
+  return execute_all_ioctl_hooks (primary_ioctl, fd, request, arg);
+# else
+  return primary_ioctl (fd, request, arg);
+# endif
 }
 
 #endif