Pass along errno from failed ftruncate().

cpukit/ChangeLog

@@ -1,3 +1,7 @@
+2005-07-08	Eric Norum <norume@aps.anl.gov>
+
+    * libcsupport/src/open.c: Pass along errno from failed ftruncate().
+
 2005-07-06  Ralf Corsepius  <ralf.corsepius@rtems.org>
 
 	* libnetworking/lib/syslog.c: Fix spelling mistake.

cpukit/libcsupport/src/open.c

@@ -174,6 +174,7 @@ int open(
   if ( (flags & O_TRUNC) == O_TRUNC ) {
     rc = ftruncate( iop - rtems_libio_iops, 0 );
     if ( rc ) {
+      if(errno) rc = errno;
       close( iop - rtems_libio_iops );
       /* those are released by close(): */
       iop = 0;