1 files changed, 48 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/readlink.c b/cpukit/libcsupport/src/readlink.c
new file mode 100644
index 0000000000..1880ed667e
--- /dev/null
+++ b/cpukit/libcsupport/src/readlink.c
@@ -0,0 +1,48 @@
+/*
+ *  readlink() - POSIX 1003.1b - X.X.X - XXX
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  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/libio_.h>
+#include <rtems/seterr.h>
+
+ssize_t readlink(
+  const char *pathname,
+  char       *buf,
+  size_t      bufsize
+)
+{
+  rtems_filesystem_location_info_t  loc;
+  int                               result;
+
+  if (!buf)
+    rtems_set_errno_and_return_minus_one( EFAULT );
+
+  result = rtems_filesystem_evaluate_path( pathname, strlen( pathname ),
+                                           0, &loc, false );
+  if ( result != 0 )
+     return -1;
+
+  if (  (*loc.ops->node_type_h)( &loc ) != RTEMS_FILESYSTEM_SYM_LINK ){
+    rtems_filesystem_freenode( &loc );
+    rtems_set_errno_and_return_minus_one( EINVAL );
+  }
+
+  result =  (*loc.ops->readlink_h)( &loc, buf, bufsize );
+
+  rtems_filesystem_freenode( &loc );
+
+  return result;
+}