Index: execunix.c
===================================================================
--- execunix.c	(revision 53709)
+++ execunix.c	(working copy)
@@ -190,13 +190,9 @@
     {
         if ( pipe( out ) < 0 )
             exit( EXITBAD );
-        fcntl( out[0], F_SETFL, O_NONBLOCK );
-        fcntl( out[1], F_SETFL, O_NONBLOCK );
 
         if ( pipe( err ) < 0 )
             exit( EXITBAD );
-        fcntl( err[0], F_SETFL, O_NONBLOCK );
-        fcntl( err[1], F_SETFL, O_NONBLOCK );
     }
 
     /* Start the command */
@@ -232,6 +228,8 @@
         }
         else
             dup2( err[1], STDERR_FILENO );
+        close( out[1] );
+        close( err[1] );
 
         /* Make this process a process group leader so that when we kill it, all
          * child processes of this process are terminated as well. We use