1 files changed, 54 insertions, 0 deletions
diff --git a/ocaml-binary-annot/otherlibs/win32unix/read.c b/ocaml-binary-annot/otherlibs/win32unix/read.c
new file mode 100644
index 0000000000..67882eb77a
--- /dev/null
+++ b/ocaml-binary-annot/otherlibs/win32unix/read.c
@@ -0,0 +1,54 @@
+/***********************************************************************/
+/*                                                                     */
+/*                           Objective Caml                            */
+/*                                                                     */
+/*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         */
+/*                                                                     */
+/*  Copyright 1996 Institut National de Recherche en Informatique et   */
+/*  en Automatique.  All rights reserved.  This file is distributed    */
+/*  under the terms of the GNU Library General Public License, with    */
+/*  the special exception on linking described in file ../../LICENSE.  */
+/*                                                                     */
+/***********************************************************************/
+
+/* $Id$ */
+
+#include <string.h>
+#include <mlvalues.h>
+#include <memory.h>
+#include <signals.h>
+#include "unixsupport.h"
+
+CAMLprim value unix_read(value fd, value buf, value ofs, value vlen)
+{
+  intnat len;
+  DWORD numbytes, numread;
+  char iobuf[UNIX_BUFFER_SIZE];
+  DWORD err = 0;
+
+  Begin_root (buf);
+    len = Long_val(vlen);
+    numbytes = len > UNIX_BUFFER_SIZE ? UNIX_BUFFER_SIZE : len;
+    if (Descr_kind_val(fd) == KIND_SOCKET) {
+      int ret;
+      SOCKET s = Socket_val(fd);
+      enter_blocking_section();
+      ret = recv(s, iobuf, numbytes, 0);
+      if (ret == SOCKET_ERROR) err = WSAGetLastError();
+      leave_blocking_section();
+      numread = ret;
+    } else {
+      HANDLE h = Handle_val(fd);
+      enter_blocking_section();
+      if (! ReadFile(h, iobuf, numbytes, &numread, NULL))
+        err = GetLastError();
+      leave_blocking_section();
+    }
+    if (err) {
+      win32_maperr(err);
+      uerror("read", Nothing);
+    }
+    memmove (&Byte(buf, Long_val(ofs)), iobuf, numread);
+  End_roots();
+  return Val_int(numread);
+}