Topic       : TOS - The Operating System
Author      : 
Version     : tos.hyp (December 19, 2008)
Subject     : Programmieren/Atari
Nodes       : 3010
Index Size  : 93790
HCP-Version : 5
Compiled on : Atari
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View Ref-File11.5.16.21  xfs_freeDD                                             TOS

 Name:        »xfs_freeDD« - Release a DD.

 Parameters:

               a0 =     DD *
               ->       void

 Description: The kernel has decremeted the reference counter of a DD 
              to 0, so that the DD is no longer referenced by the 
              kernel. The function xfs_freeDD is called, say, when the 
              kernel after the Fopen no longer requires the path in 
              which the opened file lies and which was passed to 
              xfs_fopen. XFSs that do not perform garbage collection 
              can release their DDs via this function.

              One must ensure that the root is never released. Either 
              one builds in a special inquiry here, or (more elegant) 
              already sets the reference counter of the root with 
              xfs_drv_open to 1.

 Group:       Make-up of an XFS

 See also:    MagiC's XFS-concept