Fix NSH redirection hang

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3326 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 15 insertions, 1 deletions

diff --git a/nuttx/Documentation/NuttX.html b/nuttx/Documentation/NuttX.html
index 52386107a..15ee60dae 100644
--- a/nuttx/Documentation/NuttX.html
+++ b/nuttx/Documentation/NuttX.html
@@ -8,7 +8,7 @@
   <tr align="center" bgcolor="#e4e4e4">
     <td>
       <h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
-      <p>Last Updated: February 27, 2011</p>
+      <p>Last Updated: February 28, 2011</p>
     </td>
   </tr>
 </table>
@@ -2087,6 +2087,20 @@ nuttx-5.19 2011-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
 
     * NSH: 'mem' command renamed to 'free'.  Output is now more similar to the
       Linux 'free' command.
+    * NSH: Correct a redirection bug in NSH.  The following would not work; it
+      resulted in a hang after the 'cat /dev/fifo':
+
+        nsh> mkfile /dev/fifo
+        nsh> cd /tmp             # /tmp is a mounted RAM disk
+        nsh> cat /dev/fifo > test.txt &
+        nsh> echo "This is a test" > /dev/fifo
+
+      The error was caused because (1) there was a path that resulted in stdout
+      being closed (the "hang") and also (2) the 'cat' command was always outputting
+      to stdout, not to the redirected file descriptor.  Now:
+
+        nsh> cat test.txt
+        This is a test
 
 pascal-2.1 2011-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;