1 files changed, 67 insertions, 0 deletions
diff --git a/libgfortran/io/lock.c b/libgfortran/io/lock.c
new file mode 100644
index 000000000..9e7e9513e
--- /dev/null
+++ b/libgfortran/io/lock.c
@@ -0,0 +1,67 @@
+/* Thread/recursion locking
+   Copyright 2002, 2003, 2004, 2005, 2007, 2009, 2010 
+   Free Software Foundation, Inc.
+   Contributed by Paul Brook <paul@nowt.org> and Andy Vaught
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "io.h"
+#include <string.h>
+#include <stdlib.h>
+
+/* library_start()-- Called with a library call is entered.  */
+
+void
+library_start (st_parameter_common *cmp)
+{
+  if ((cmp->flags & IOPARM_LIBRETURN_ERROR) != 0)
+    return;
+
+  cmp->flags &= ~IOPARM_LIBRETURN_MASK;
+}
+
+
+void
+free_ionml (st_parameter_dt *dtp)
+{
+  namelist_info * t1, *t2;
+
+  /* Delete the namelist, if it exists.  */
+
+  if (dtp->u.p.ionml != NULL)
+    {
+      t1 = dtp->u.p.ionml;
+      while (t1 != NULL)
+	{
+	  t2 = t1;
+	  t1 = t1->next;
+	  free (t2->var_name);
+	  if (t2->var_rank)
+	    {
+	     free (t2->dim);
+	     free (t2->ls);
+	    }
+	  free (t2);
+	}
+    }
+  dtp->u.p.ionml = NULL;
+}