vfsfile.cxh

#include <cx/fs/fileobj.cxh>
#include <cx/fs/vfsobj.cxh>
 
/// @addtogroup fs_vfs
/// @{
 
/// A file opened through a VFS with vfsOpen()
///
/// The provider's own file, plus what the VFS layer adds on top of it: copy-on-write lives here,
/// so providers never have to know about it. Being a File, it can be handed to anything that
/// takes one, whichever layer opened it.
class VFSFile extends File {
    object[VFS] vfs;
    object[File] inner;   // the provider's file, which every operation ends up at
 
    // for copy-on-write files
    object[ObjInst] cowprov;   // VFSProvider
    string cowpath;            // absolute path to COW file (for cache invalidation)
    string cowrpath;           // relative path for COW file for provider
 
    factory create(VFS *vfs, File *inner);
    destroy();
}
 
/// @}