TAO/tests/POA/Default_Servant2/File.idl

   1
   2 //=============================================================================
   3 /**
   4  *  @file     File.idl
   5  *
   6  *   A simple File Descriptor and File System IDL interface.
   7  *
   8  *
   9  *  @author  Irfan Pyarali
  10  */
  11 //=============================================================================
  12
  13
  14 // IDL
  15
  16 module File
  17 {
  18   exception IOError
  19     {
  20       long error;
  21     };
  22
  23   interface Descriptor
  24     {
  25       typedef sequence<octet> DataBuffer;
  26
  27       long write (in DataBuffer buffer)
  28         raises (IOError);
  29       // write buffer to File
  30
  31       DataBuffer read (in long num_bytes)
  32         raises (IOError);
  33       // read num_bytes to DataBuffer
  34
  35       unsigned long lseek (in unsigned long offset,
  36                            in long whence)
  37         raises (IOError);
  38       // seek to offset in File from whence
  39
  40       void destroy ();
  41       // destroy the descriptor
  42     };
  43
  44   interface System
  45     {
  46       /// File open operation
  47       Descriptor open (in string file_name,
  48                        in long flags)
  49         raises (IOError);
  50
  51       oneway void shutdown ();
  52     };
  53 };