1 files changed, 40 insertions, 0 deletions
diff --git a/otherlibs/win32unix/read.c b/otherlibs/win32unix/read.c
new file mode 100644
index 000000000..dd8aa74e2
--- /dev/null
+++ b/otherlibs/win32unix/read.c
@@ -0,0 +1,40 @@
+/***********************************************************************/
+/*                                                                     */
+/*                           Objective Caml                            */
+/*                                                                     */
+/*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         */
+/*                                                                     */
+/*  Copyright 1996 Institut National de Recherche en Informatique et   */
+/*  Automatique.  Distributed only by permission.                      */
+/*                                                                     */
+/***********************************************************************/
+
+/* $Id$ */
+
+#include <string.h>
+#include <mlvalues.h>
+#include <memory.h>
+#include <signals.h>
+#include "unixsupport.h"
+
+value unix_read(value fd, value buf, value ofs, value len) /* ML */
+{
+  DWORD numbytes, numread;
+  BOOL ret;
+  char iobuf[UNIX_BUFFER_SIZE];
+  HANDLE h = Handle_val(fd);
+
+  Begin_root (buf);
+    numbytes = Long_val(len);
+    if (numbytes > UNIX_BUFFER_SIZE) numbytes = UNIX_BUFFER_SIZE;
+    enter_blocking_section();
+    ret = ReadFile(h, iobuf, numbytes, &numread, NULL);
+    leave_blocking_section();
+    if (! ret) {
+      _dosmaperr(GetLastError());
+      uerror("read", Nothing);
+    }
+    bcopy(iobuf, &Byte(buf, Long_val(ofs)), numread);
+  End_roots();
+  return Val_int(numread);
+}