/* vi: set sw=4 ts=4: *//* * irel.h * * Copyright (C) 1996, 1997 Theodore Ts'o. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% */struct ext2_inode_reference {	blk_t	block;	__u16 offset;};struct ext2_inode_relocate_entry {	ext2_ino_t	new;	ext2_ino_t	orig;	__u16		flags;	__u16		max_refs;};typedef struct ext2_inode_relocation_table *ext2_irel;struct ext2_inode_relocation_table {	__u32	magic;	char	*name;	ext2_ino_t	current;	void	*priv_data;	/*	 * Add an inode relocation entry.	 */	errcode_t (*put)(ext2_irel irel, ext2_ino_t old,			      struct ext2_inode_relocate_entry *ent);	/*	 * Get an inode relocation entry.	 */	errcode_t (*get)(ext2_irel irel, ext2_ino_t old,			      struct ext2_inode_relocate_entry *ent);	/*	 * Get an inode relocation entry by its original inode number	 */	errcode_t (*get_by_orig)(ext2_irel irel, ext2_ino_t orig, ext2_ino_t *old,				 struct ext2_inode_relocate_entry *ent);	/*	 * Initialize for iterating over the inode relocation entries.	 */	errcode_t (*start_iter)(ext2_irel irel);	/*	 * The iterator function for the inode relocation entries.	 * Returns an inode number of 0 when out of entries.	 */	errcode_t (*next)(ext2_irel irel, ext2_ino_t *old,			  struct ext2_inode_relocate_entry *ent);	/*	 * Add an inode reference (i.e., note the fact that a	 * particular block/offset contains a reference to an inode)	 */	errcode_t (*add_ref)(ext2_irel irel, ext2_ino_t ino,			     struct ext2_inode_reference *ref);	/*	 * Initialize for iterating over the inode references for a	 * particular inode.	 */	errcode_t (*start_iter_ref)(ext2_irel irel, ext2_ino_t ino);	/*	 * The iterator function for the inode references for an	 * inode.  The references for only one inode can be interator	 * over at a time, as the iterator state is stored in ext2_irel.	 */	errcode_t (*next_ref)(ext2_irel irel,			      struct ext2_inode_reference *ref);	/*	 * Move the inode relocation table from one inode number to	 * another.  Note that the inode references also must move.	 */	errcode_t (*move)(ext2_irel irel, ext2_ino_t old, ext2_ino_t new);	/*	 * Remove an inode relocation entry, along with all of the	 * inode references.	 */	errcode_t (*delete)(ext2_irel irel, ext2_ino_t old);	/*	 * Free the inode relocation table.	 */	errcode_t (*free)(ext2_irel irel);};errcode_t ext2fs_irel_memarray_create(char *name, ext2_ino_t max_inode,				    ext2_irel *irel);#define ext2fs_irel_put(irel, old, ent) ((irel)->put((irel), old, ent))#define ext2fs_irel_get(irel, old, ent) ((irel)->get((irel), old, ent))#define ext2fs_irel_get_by_orig(irel, orig, old, ent) \			((irel)->get_by_orig((irel), orig, old, ent))#define ext2fs_irel_start_iter(irel) ((irel)->start_iter((irel)))#define ext2fs_irel_next(irel, old, ent) ((irel)->next((irel), old, ent))#define ext2fs_irel_add_ref(irel, ino, ref) ((irel)->add_ref((irel), ino, ref))#define ext2fs_irel_start_iter_ref(irel, ino) ((irel)->start_iter_ref((irel), ino))#define ext2fs_irel_next_ref(irel, ref) ((irel)->next_ref((irel), ref))#define ext2fs_irel_move(irel, old, new) ((irel)->move((irel), old, new))#define ext2fs_irel_delete(irel, old) ((irel)->delete((irel), old))#define ext2fs_irel_free(irel) ((irel)->free((irel)))