import winsup-2000-02-17 snapshot

winsup/cygwin/fhandler_zero.cc

@@ -0,0 +1,58 @@
+/* fhandler_dev_zero.cc: code to access /dev/zero
+
+   Copyright 2000 Cygnus Solutions.
+
+   Written by DJ Delorie (dj@cygnus.com)
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#include <errno.h>
+#include "winsup.h"
+
+fhandler_dev_zero::fhandler_dev_zero (const char *name)
+  : fhandler_base (FH_ZERO, name)
+{
+  set_cb (sizeof *this);
+}
+
+int
+fhandler_dev_zero::open (const char *path, int flags, mode_t mode = 0)
+{
+  set_flags (flags);
+  return 1;
+}
+
+int
+fhandler_dev_zero::write (const void *ptr, size_t len)
+{
+  return len;
+}
+
+int
+fhandler_dev_zero::read (void *ptr, size_t len)
+{
+  memset(ptr, 0, len);
+  return len;
+}
+
+off_t
+fhandler_dev_zero::lseek (off_t offset, int whence)
+{
+  return 0;
+}
+
+int
+fhandler_dev_zero::close (void)
+{
+  return 0;
+}
+
+void
+fhandler_dev_zero::dump ()
+{
+  paranoid_printf("here, fhandler_dev_zero");
+}