new file mode 100644
--- /dev/null
+++ b/packages/error/current/src/errno.cxx
@@ -0,0 +1,112 @@
+//===========================================================================
+//
+//      errno.cxx
+//
+//      ISO C and POSIX error code
+//
+//===========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//===========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     jlarmour
+// Contributors:  jlarmour
+// Date:          2000-04-14
+// Purpose:       Provide the errno variable
+// Description:   This file either provides the errno variable directly,
+//                or if thread-safe, using a kernel per-thread data
+//                access function
+// Usage:       
+//
+//####DESCRIPTIONEND####
+//
+//===========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/system.h>
+#include <pkgconf/error.h>   // Configuration header
+
+#ifdef CYGPKG_ERROR_ERRNO
+
+// INCLUDES
+
+#include <cyg/infra/cyg_type.h>   // Common project-wide type definitions
+#include <cyg/infra/cyg_trac.h>   // Common tracing functions
+#include <cyg/error/errno.h>      // Header for this file
+
+#ifdef CYGSEM_ERROR_PER_THREAD_ERRNO
+# include <pkgconf/kernel.h>       // kernel configuration
+# include <cyg/kernel/thread.hxx>  // per-thread data
+# include <cyg/kernel/thread.inl>  // per-thread data
+# include <cyg/kernel/mutex.hxx>   // mutexes
+#endif
+
+// GLOBAL VARIABLES
+
+#ifndef CYGSEM_ERROR_PER_THREAD_ERRNO
+
+// errno is initialised to 0 at program startup - ANSI 7.1.4
+Cyg_ErrNo errno = 0;
+
+#else // ifndef CYGSEM_ERROR_PER_THREAD_ERRNO
+
+# if defined(CYGDBG_USE_TRACING) && defined(CYGNUM_ERROR_ERRNO_TRACE_LEVEL)
+static int errno_trace = CYGNUM_ERROR_ERRNO_TRACE_LEVEL;
+#  define TL1 (0 < errno_trace)
+# else
+#  define TL1 (0)
+# endif
+
+// FUNCTIONS
+
+Cyg_ErrNo * const
+cyg_error_get_errno_p( void )
+{
+    Cyg_ErrNo *errno_p;
+
+    CYG_REPORT_FUNCNAMETYPE( "cyg_error_get_errno_p", "&errno is %d");
+
+    // set up the thread data, allocating if necessary (even though the
+    // user _shouldn't_ read errno before its set, we can't stop them - and
+    // ANSI prescribes it has a sensible value (0) before its set too anyway.
+
+    Cyg_Thread *self = Cyg_Thread::self();
+
+    errno_p = (Cyg_ErrNo *)self->get_data_ptr(CYGNUM_KERNEL_THREADS_DATA_ERRNO);
+
+    CYG_TRACE1( TL1, "errno is %d", *errno_p );
+
+    CYG_REPORT_RETVAL( errno_p );
+    
+    // return the internal data's errno
+    return errno_p;
+} // cyg_error_get_errno_p()
+
+#endif // ifdef CYGSEM_ERROR_PER_THREAD_ERRNO
+
+#endif // ifdef CYGPKG_ERROR_ERRNO
+
+// EOF errno.cxx