roken: Add rk_mkdir()

The Windows version of mkdir() does not share the same signature
as the POSIX version.  Add rk_mkdir() with an POSIX compliant signature
to libroken.  The current implementation ignores the 'mode' parameter
on Windows but a future implementation could provide the required
functionality with native Win32 APIs.

Change-Id: I084d42e0f27932e9b8131d310dbf34849f5fe4b6

lib/roken/mkdir.c

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2013 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#ifdef HAVE_DIRECT_H
+#include <direct.h>
+#endif
+
+#include "roken.h"
+#undef mkdir
+
+int ROKEN_LIB_FUNCTION
+rk_mkdir(const char *pathname, mode_t mode)
+{
+#ifndef _WIN32
+    return mkdir(pathname, mode);
+#else
+    /* Windows does not provide the ability to set access permissions */
+    return _mkdir(pathname);
+#endif
+}