[LIP] problem with fcntl while locking file on NFS

Hello,

I am using fcntl for locking the file on linux (flock
doesn't work properly on NFS), and facing problem.
Following code works most of the time but fails
sometime with the error message "Invalid argument"
(EINVAL). What could be the reason for this error 
message and how it can be handled ?


   $buf  = pack("ssLL", F_WRLCK ,0,0,0);
   while (1)
   {
      unless (fcntl($fh, F_SETLKW, $buf))
      {
        next if ($! =~ /^Interrupted/);
        $msg = "Could not lock file $!";
        $err++;
        last;
      }
      else
      {
        $msg = "File locked";
        last;
      }
  }

thanks and regards,
Gaurav

Cheers,
Gaurav Varshney


		
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