new file mode 100644
--- /dev/null
+++ b/packages/language/c/libc/stdio/current/src/common/setvbuf.cxx
@@ -0,0 +1,120 @@
+//===========================================================================
+//
+//      setvbuf.cxx
+//
+//      Implementation of C library buffering setup as per ANSI 7.9.5.6
+//
+//===========================================================================
+//####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: 
+// Date:         2000-04-20
+// Purpose:     
+// Description: 
+// Usage:       
+//
+//####DESCRIPTIONEND####
+//
+//===========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/libc_stdio.h>   // Configuration header
+
+
+// INCLUDES
+
+#include <cyg/infra/cyg_type.h>     // Common project-wide type definitions
+#include <stddef.h>                 // NULL and size_t from compiler
+#include <errno.h>                  // Error codes
+#include <stdio.h>                  // header for setvbuf()
+#include <cyg/libc/stdio/stream.hxx>// C libray streams
+
+// FUNCTIONS
+
+
+externC int
+setvbuf( FILE *stream, char *buf, int mode, size_t size )
+{
+#ifdef CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO
+
+    Cyg_StdioStream *real_stream = (Cyg_StdioStream *)stream;
+    Cyg_ErrNo err;
+    
+#ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS
+    if ( !real_stream->lock_me() ) {
+        errno = EBADF;
+        return EBADF;
+    } // if
+#endif
+
+    err = real_stream->io_buf.set_buffer( (cyg_ucount32) size, 
+                                          (cyg_uint8 *) buf );
+    if (!err) {
+        switch (mode) {
+        case _IONBF:
+            CYG_ASSERT( (size == 0) && (buf == NULL),
+                        "No buffering wanted but size/address specified!" );
+            real_stream->flags.buffering = false;
+            real_stream->flags.line_buffering = false;
+            break;
+        case _IOLBF:
+            real_stream->flags.buffering = true;
+            real_stream->flags.line_buffering = true;
+            break;
+        case _IOFBF:
+            real_stream->flags.buffering = true;
+            real_stream->flags.line_buffering = false;
+            break;
+        default:
+            err = EINVAL;
+            break;
+        } // switch
+    } // if
+
+#ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS
+    real_stream->unlock_me();
+#endif
+    
+    if (err) {
+        errno = err;
+        return err;
+    } // if
+        
+    return 0;
+
+#else // ifdef CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO
+
+    errno = ENOSUPP;
+    return ENOSUPP;
+
+#endif // ifdef CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO
+
+} // setvbuf()
+
+// EOF setvbuf.cxx