FreeDOS/docs/lfnapi.txt

                         FreeDOS LFN helper API.

struct lfn_inode
{
  UNICODE name[256];

  struct dirent l_dir;          /* this file's dir entry image  */

  ULONG l_diroff;               /* offset of the dir entry      */
};
typedef struct lfn_inode FAR * lfn_inode_ptr;

COUNT lfn_allocate_inode(VOID);
COUNT lfn_free_inode(COUNT handle);

COUNT lfn_setup_inode(COUNT handle, CLUSTER dirstart, ULONG diroff);

COUNT lfn_create_entries(COUNT handle, lfn_inode_ptr lip);
COUNT lfn_remove_entries(COUNT handle);

COUNT lfn_dir_read(COUNT handle, lfn_inode_ptr lip);
COUNT lfn_dir_write(COUNT handle);