1 files changed, 57 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/chdir.c b/cpukit/libcsupport/src/chdir.c
new file mode 100644
index 0000000000..c9d05f0bef
--- /dev/null
+++ b/cpukit/libcsupport/src/chdir.c
@@ -0,0 +1,57 @@
+/*
+ *  chdir() - POSIX 1003.1b - 5.2.1 - Change Current Working Directory
+ *
+ *  COPYRIGHT (c) 1989-2010.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems.h>
+
+#include <unistd.h>
+#include <errno.h>
+
+#include <rtems/libio_.h>
+#include <rtems/seterr.h>
+
+int chdir(
+  const char *pathname
+)
+{
+  rtems_filesystem_location_info_t  loc;
+  int                               result;
+
+  if ( !pathname )
+    rtems_set_errno_and_return_minus_one( EFAULT );
+
+  /*
+   *  Get the node where we wish to go.
+   */
+  result = rtems_filesystem_evaluate_path(
+    pathname, strlen( pathname ), RTEMS_LIBIO_PERMS_SEARCH, &loc, true );
+  if ( result != 0 )
+     return -1;
+
+  /*
+   * Verify you can change directory into this node.
+   */
+  if (  (*loc.ops->node_type_h)( &loc ) != RTEMS_FILESYSTEM_DIRECTORY ) {
+    rtems_filesystem_freenode( &loc );
+    rtems_set_errno_and_return_minus_one( ENOTDIR );
+  }
+
+  rtems_filesystem_freenode( &rtems_filesystem_current );
+
+  rtems_filesystem_current = loc;
+
+  return 0;
+}