fs/hfsplus/hfsplus_fs.h - kernel/msm-4.9 - Gitiles

 /*
  *  linux/include/linux/hfsplus_fs.h
  *
  * Copyright (C) 1999
  * Brad Boyer (flar@pants.nu)
  * (C) 2003 Ardis Technologies <roman@ardistech.com>
  *
  */

 #ifndef _LINUX_HFSPLUS_FS_H
 #define _LINUX_HFSPLUS_FS_H

 #include <linux/fs.h>
 #include <linux/buffer_head.h>
 #include "hfsplus_raw.h"

 #define DBG_BNODE_REFS	0x00000001
 #define DBG_BNODE_MOD	0x00000002
 #define DBG_CAT_MOD	0x00000004
 #define DBG_INODE	0x00000008
 #define DBG_SUPER	0x00000010
 #define DBG_EXTENT	0x00000020
 #define DBG_BITMAP	0x00000040

 //#define DBG_MASK	(DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD)
 //#define DBG_MASK	(DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE)
 //#define DBG_MASK	(DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT)
 #define DBG_MASK	(0)

 #define dprint(flg, fmt, args...) \
 	if (flg & DBG_MASK) printk(fmt , ## args)

 /* Runtime config options */
 #define HFSPLUS_DEF_CR_TYPE    0x3F3F3F3F  /* '????' */

 #define HFSPLUS_TYPE_DATA 0x00
 #define HFSPLUS_TYPE_RSRC 0xFF

 typedef int (*btree_keycmp)(hfsplus_btree_key *, hfsplus_btree_key *);

 #define NODE_HASH_SIZE	256

 /* An HFS+ BTree held in memory */
 struct hfs_btree {
 	struct super_block *sb;
 	struct inode *inode;
 	btree_keycmp keycmp;

 	u32 cnid;
 	u32 root;
 	u32 leaf_count;
 	u32 leaf_head;
 	u32 leaf_tail;
 	u32 node_count;
 	u32 free_nodes;
 	u32 attributes;

 	unsigned int node_size;
 	unsigned int node_size_shift;
 	unsigned int max_key_len;
 	unsigned int depth;

 	//unsigned int map1_size, map_size;
 	struct semaphore tree_lock;

 	unsigned int pages_per_bnode;
 	spinlock_t hash_lock;
 	struct hfs_bnode *node_hash[NODE_HASH_SIZE];
 	int node_hash_cnt;
 };

 struct page;

 /* An HFS+ BTree node in memory */
 struct hfs_bnode {
 	struct hfs_btree *tree;

 	u32 prev;
 	u32 this;
 	u32 next;
 	u32 parent;

 	u16 num_recs;
 	u8 type;
 	u8 height;

 	struct hfs_bnode *next_hash;
 	unsigned long flags;
 	wait_queue_head_t lock_wq;
 	atomic_t refcnt;
 	unsigned int page_offset;
 	struct page *page[0];
 };

 #define HFS_BNODE_LOCK		0
 #define HFS_BNODE_ERROR		1
 #define HFS_BNODE_NEW		2
 #define HFS_BNODE_DIRTY		3
 #define HFS_BNODE_DELETED	4

 /*
  * HFS+ superblock info (built from Volume Header on disk)
  */

 struct hfsplus_vh;
 struct hfs_btree;

 struct hfsplus_sb_info {
 	struct buffer_head *s_vhbh;
 	struct hfsplus_vh *s_vhdr;
 	struct hfs_btree *ext_tree;
 	struct hfs_btree *cat_tree;
 	struct hfs_btree *attr_tree;
 	struct inode *alloc_file;
 	struct inode *hidden_dir;
 	struct nls_table *nls;

 	/* Runtime variables */
 	u32 blockoffset;
 	u32 sect_count;
 	int fs_shift;

 	/* Stuff in host order from Vol Header */
 	u32 alloc_blksz;
 	int alloc_blksz_shift;
 	u32 total_blocks;
 	u32 free_blocks;
 	u32 next_alloc;
 	u32 next_cnid;
 	u32 file_count;
 	u32 folder_count;
 	u32 data_clump_blocks, rsrc_clump_blocks;

 	/* Config options */
 	u32 creator;
 	u32 type;

 	umode_t umask;
 	uid_t uid;
 	gid_t gid;

 	int part, session;

 	unsigned long flags;

 	struct hlist_head rsrc_inodes;
 };

 #define HFSPLUS_SB_WRITEBACKUP	0x0001
 #define HFSPLUS_SB_NODECOMPOSE	0x0002
 #define HFSPLUS_SB_FORCE	0x0004


 struct hfsplus_inode_info {
 	struct semaphore extents_lock;
 	u32 clump_blocks, alloc_blocks;
 	sector_t fs_blocks;
 	/* Allocation extents from catalog record or volume header */
 	hfsplus_extent_rec first_extents;
 	u32 first_blocks;
 	hfsplus_extent_rec cached_extents;
 	u32 cached_start, cached_blocks;
 	atomic_t opencnt;

 	struct inode *rsrc_inode;
 	unsigned long flags;

 	/* Device number in hfsplus_permissions in catalog */
 	u32 dev;
 	/* BSD system and user file flags */
 	u8 rootflags;
 	u8 userflags;

 	struct list_head open_dir_list;
 	loff_t phys_size;
 	struct inode vfs_inode;
 };

 #define HFSPLUS_FLG_RSRC	0x0001
 #define HFSPLUS_FLG_EXT_DIRTY	0x0002
 #define HFSPLUS_FLG_EXT_NEW	0x0004

 #define HFSPLUS_IS_DATA(inode)   (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC))
 #define HFSPLUS_IS_RSRC(inode)   (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)

 struct hfs_find_data {
 	/* filled by caller */
 	hfsplus_btree_key *search_key;
 	hfsplus_btree_key *key;
 	/* filled by find */
 	struct hfs_btree *tree;
 	struct hfs_bnode *bnode;
 	/* filled by findrec */
 	int record;
 	int keyoffset, keylength;
 	int entryoffset, entrylength;
 };

 struct hfsplus_readdir_data {
 	struct list_head list;
 	struct file *file;
 	struct hfsplus_cat_key key;
 };

 #define hfs_btree_open hfsplus_btree_open
 #define hfs_btree_close hfsplus_btree_close
 #define hfs_btree_write hfsplus_btree_write
 #define hfs_bmap_alloc hfsplus_bmap_alloc
 #define hfs_bmap_free hfsplus_bmap_free
 #define hfs_bnode_read hfsplus_bnode_read
 #define hfs_bnode_read_u16 hfsplus_bnode_read_u16
 #define hfs_bnode_read_u8 hfsplus_bnode_read_u8
 #define hfs_bnode_read_key hfsplus_bnode_read_key
 #define hfs_bnode_write hfsplus_bnode_write
 #define hfs_bnode_write_u16 hfsplus_bnode_write_u16
 #define hfs_bnode_clear hfsplus_bnode_clear
 #define hfs_bnode_copy hfsplus_bnode_copy
 #define hfs_bnode_move hfsplus_bnode_move
 #define hfs_bnode_dump hfsplus_bnode_dump
 #define hfs_bnode_unlink hfsplus_bnode_unlink
 #define hfs_bnode_findhash hfsplus_bnode_findhash
 #define hfs_bnode_find hfsplus_bnode_find
 #define hfs_bnode_unhash hfsplus_bnode_unhash
 #define hfs_bnode_free hfsplus_bnode_free
 #define hfs_bnode_create hfsplus_bnode_create
 #define hfs_bnode_get hfsplus_bnode_get
 #define hfs_bnode_put hfsplus_bnode_put
 #define hfs_brec_lenoff hfsplus_brec_lenoff
 #define hfs_brec_keylen hfsplus_brec_keylen
 #define hfs_brec_insert hfsplus_brec_insert
 #define hfs_brec_remove hfsplus_brec_remove
 #define hfs_find_init hfsplus_find_init
 #define hfs_find_exit hfsplus_find_exit
 #define __hfs_brec_find __hplusfs_brec_find
 #define hfs_brec_find hfsplus_brec_find
 #define hfs_brec_read hfsplus_brec_read
 #define hfs_brec_goto hfsplus_brec_goto
 #define hfs_part_find hfsplus_part_find

 /*
  * definitions for ext2 flag ioctls (linux really needs a generic
  * interface for this).
  */

 /* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support
  * chattr/lsattr */
 #define HFSPLUS_IOC_EXT2_GETFLAGS	_IOR('f', 1, long)
 #define HFSPLUS_IOC_EXT2_SETFLAGS	_IOW('f', 2, long)

 #define EXT2_FLAG_IMMUTABLE		0x00000010 /* Immutable file */
 #define EXT2_FLAG_APPEND		0x00000020 /* writes to file may only append */
 #define EXT2_FLAG_NODUMP		0x00000040 /* do not dump file */


 /*
  * Functions in any *.c used in other files
  */

 /* bitmap.c */
 int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *);
 int hfsplus_block_free(struct super_block *, u32, u32);

 /* btree.c */
 struct hfs_btree *hfs_btree_open(struct super_block *, u32);
 void hfs_btree_close(struct hfs_btree *);
 void hfs_btree_write(struct hfs_btree *);
 struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *);
 void hfs_bmap_free(struct hfs_bnode *);

 /* bnode.c */
 void hfs_bnode_read(struct hfs_bnode *, void *, int, int);
 u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
 u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
 void hfs_bnode_read_key(struct hfs_bnode *, void *, int);
 void hfs_bnode_write(struct hfs_bnode *, void *, int, int);
 void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
 void hfs_bnode_clear(struct hfs_bnode *, int, int);
 void hfs_bnode_copy(struct hfs_bnode *, int,
 		    struct hfs_bnode *, int, int);
 void hfs_bnode_move(struct hfs_bnode *, int, int, int);
 void hfs_bnode_dump(struct hfs_bnode *);
 void hfs_bnode_unlink(struct hfs_bnode *);
 struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32);
 struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32);
 void hfs_bnode_unhash(struct hfs_bnode *);
 void hfs_bnode_free(struct hfs_bnode *);
 struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32);
 void hfs_bnode_get(struct hfs_bnode *);
 void hfs_bnode_put(struct hfs_bnode *);

 /* brec.c */
 u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *);
 u16 hfs_brec_keylen(struct hfs_bnode *, u16);
 int hfs_brec_insert(struct hfs_find_data *, void *, int);
 int hfs_brec_remove(struct hfs_find_data *);

 /* bfind.c */
 int hfs_find_init(struct hfs_btree *, struct hfs_find_data *);
 void hfs_find_exit(struct hfs_find_data *);
 int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *);
 int hfs_brec_find(struct hfs_find_data *);
 int hfs_brec_read(struct hfs_find_data *, void *, int);
 int hfs_brec_goto(struct hfs_find_data *, int);

 /* catalog.c */
 int hfsplus_cat_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *);
 void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *);
 int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *);
 int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *);
 int hfsplus_delete_cat(u32, struct inode *, struct qstr *);
 int hfsplus_rename_cat(u32, struct inode *, struct qstr *,
 		       struct inode *, struct qstr *);

 /* extents.c */
 int hfsplus_ext_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *);
 void hfsplus_ext_write_extent(struct inode *);
 int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int);
 int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int);
 int hfsplus_file_extend(struct inode *);
 void hfsplus_file_truncate(struct inode *);

 /* inode.c */
 extern struct address_space_operations hfsplus_aops;
 extern struct address_space_operations hfsplus_btree_aops;

 void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *);
 void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *);
 int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *);
 int hfsplus_cat_write_inode(struct inode *);
 struct inode *hfsplus_new_inode(struct super_block *, int);
 void hfsplus_delete_inode(struct inode *);

 /* ioctl.c */
 int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
 		  unsigned long arg);
 int hfsplus_setxattr(struct dentry *dentry, const char *name,
 		     const void *value, size_t size, int flags);
 ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
 			 void *value, size_t size);
 ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);

 /* options.c */
 int hfsplus_parse_options(char *, struct hfsplus_sb_info *);
 void hfsplus_fill_defaults(struct hfsplus_sb_info *);
 int hfsplus_show_options(struct seq_file *, struct vfsmount *);

 /* tables.c */
 extern u16 hfsplus_case_fold_table[];
 extern u16 hfsplus_decompose_table[];
 extern u16 hfsplus_compose_table[];

 /* unicode.c */
 int hfsplus_unistrcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *);
 int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *);
 int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int);

 /* wrapper.c */
 int hfsplus_read_wrapper(struct super_block *);

 int hfs_part_find(struct super_block *, sector_t *, sector_t *);

 /* access macros */
 /*
 static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
 {
 	return sb->s_fs_info;
 }
 static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
 {
 	return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
 }
 */
 #define HFSPLUS_SB(super)	(*(struct hfsplus_sb_info *)(super)->s_fs_info)
 #define HFSPLUS_I(inode)	(*list_entry(inode, struct hfsplus_inode_info, vfs_inode))

 #if 1
 #define hfsplus_kmap(p)		({ struct page *__p = (p); kmap(__p); })
 #define hfsplus_kunmap(p)	({ struct page *__p = (p); kunmap(__p); __p; })
 #else
 #define hfsplus_kmap(p)		kmap(p)
 #define hfsplus_kunmap(p)	kunmap(p)
 #endif

 #define sb_bread512(sb, sec, data) ({			\
 	struct buffer_head *__bh;			\
 	sector_t __block;				\
 	loff_t __start;					\
 	int __offset;					\
 							\
 	__start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\
 	__block = __start >> (sb)->s_blocksize_bits;	\
 	__offset = __start & ((sb)->s_blocksize - 1);	\
 	__bh = sb_bread((sb), __block);			\
 	if (likely(__bh != NULL))			\
 		data = (void *)(__bh->b_data + __offset);\
 	else						\
 		data = NULL;				\
 	__bh;						\
 })

 /* time macros */
 #define __hfsp_mt2ut(t)		(be32_to_cpu(t) - 2082844800U)
 #define __hfsp_ut2mt(t)		(cpu_to_be32(t + 2082844800U))

 /* compatibility */
 #define hfsp_mt2ut(t)		(struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
 #define hfsp_ut2mt(t)		__hfsp_ut2mt((t).tv_sec)
 #define hfsp_now2mt()		__hfsp_ut2mt(get_seconds())

 #define kdev_t_to_nr(x)		(x)

 #endif
	/*
	* linux/include/linux/hfsplus_fs.h
	*
	* Copyright (C) 1999
	* Brad Boyer (flar@pants.nu)
	* (C) 2003 Ardis Technologies <roman@ardistech.com>
	*
	*/

	#ifndef _LINUX_HFSPLUS_FS_H
	#define _LINUX_HFSPLUS_FS_H

	#include <linux/fs.h>
	#include <linux/buffer_head.h>
	#include "hfsplus_raw.h"

	#define DBG_BNODE_REFS 0x00000001
	#define DBG_BNODE_MOD 0x00000002
	#define DBG_CAT_MOD 0x00000004
	#define DBG_INODE 0x00000008
	#define DBG_SUPER 0x00000010
	#define DBG_EXTENT 0x00000020
	#define DBG_BITMAP 0x00000040

	//#define DBG_MASK (DBG_EXTENT\|DBG_INODE\|DBG_BNODE_MOD)
	//#define DBG_MASK (DBG_BNODE_MOD\|DBG_CAT_MOD\|DBG_INODE)
	//#define DBG_MASK (DBG_CAT_MOD\|DBG_BNODE_REFS\|DBG_INODE\|DBG_EXTENT)
	#define DBG_MASK (0)

	#define dprint(flg, fmt, args...) \
	if (flg & DBG_MASK) printk(fmt , ## args)

	/* Runtime config options */
	#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */

	#define HFSPLUS_TYPE_DATA 0x00
	#define HFSPLUS_TYPE_RSRC 0xFF

	typedef int (btree_keycmp)(hfsplus_btree_key , hfsplus_btree_key *);

	#define NODE_HASH_SIZE 256

	/* An HFS+ BTree held in memory */
	struct hfs_btree {
	struct super_block *sb;
	struct inode *inode;
	btree_keycmp keycmp;

	u32 cnid;
	u32 root;
	u32 leaf_count;
	u32 leaf_head;
	u32 leaf_tail;
	u32 node_count;
	u32 free_nodes;
	u32 attributes;

	unsigned int node_size;
	unsigned int node_size_shift;
	unsigned int max_key_len;
	unsigned int depth;

	//unsigned int map1_size, map_size;
	struct semaphore tree_lock;

	unsigned int pages_per_bnode;
	spinlock_t hash_lock;
	struct hfs_bnode *node_hash[NODE_HASH_SIZE];
	int node_hash_cnt;
	};

	struct page;

	/* An HFS+ BTree node in memory */
	struct hfs_bnode {
	struct hfs_btree *tree;

	u32 prev;
	u32 this;
	u32 next;
	u32 parent;

	u16 num_recs;
	u8 type;
	u8 height;

	struct hfs_bnode *next_hash;
	unsigned long flags;
	wait_queue_head_t lock_wq;
	atomic_t refcnt;
	unsigned int page_offset;
	struct page *page[0];
	};

	#define HFS_BNODE_LOCK 0
	#define HFS_BNODE_ERROR 1
	#define HFS_BNODE_NEW 2
	#define HFS_BNODE_DIRTY 3
	#define HFS_BNODE_DELETED 4

	/*
	* HFS+ superblock info (built from Volume Header on disk)
	*/

	struct hfsplus_vh;
	struct hfs_btree;

	struct hfsplus_sb_info {
	struct buffer_head *s_vhbh;
	struct hfsplus_vh *s_vhdr;
	struct hfs_btree *ext_tree;
	struct hfs_btree *cat_tree;
	struct hfs_btree *attr_tree;
	struct inode *alloc_file;
	struct inode *hidden_dir;
	struct nls_table *nls;

	/* Runtime variables */
	u32 blockoffset;
	u32 sect_count;
	int fs_shift;

	/* Stuff in host order from Vol Header */
	u32 alloc_blksz;
	int alloc_blksz_shift;
	u32 total_blocks;
	u32 free_blocks;
	u32 next_alloc;
	u32 next_cnid;
	u32 file_count;
	u32 folder_count;
	u32 data_clump_blocks, rsrc_clump_blocks;

	/* Config options */
	u32 creator;
	u32 type;

	umode_t umask;
	uid_t uid;
	gid_t gid;

	int part, session;

	unsigned long flags;

	struct hlist_head rsrc_inodes;
	};

	#define HFSPLUS_SB_WRITEBACKUP 0x0001
	#define HFSPLUS_SB_NODECOMPOSE 0x0002
	#define HFSPLUS_SB_FORCE 0x0004


	struct hfsplus_inode_info {
	struct semaphore extents_lock;
	u32 clump_blocks, alloc_blocks;
	sector_t fs_blocks;
	/* Allocation extents from catalog record or volume header */
	hfsplus_extent_rec first_extents;
	u32 first_blocks;
	hfsplus_extent_rec cached_extents;
	u32 cached_start, cached_blocks;
	atomic_t opencnt;

	struct inode *rsrc_inode;
	unsigned long flags;

	/* Device number in hfsplus_permissions in catalog */
	u32 dev;
	/* BSD system and user file flags */
	u8 rootflags;
	u8 userflags;

	struct list_head open_dir_list;
	loff_t phys_size;
	struct inode vfs_inode;
	};

	#define HFSPLUS_FLG_RSRC 0x0001
	#define HFSPLUS_FLG_EXT_DIRTY 0x0002
	#define HFSPLUS_FLG_EXT_NEW 0x0004

	#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC))
	#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)

	struct hfs_find_data {
	/* filled by caller */
	hfsplus_btree_key *search_key;
	hfsplus_btree_key *key;
	/* filled by find */
	struct hfs_btree *tree;
	struct hfs_bnode *bnode;
	/* filled by findrec */
	int record;
	int keyoffset, keylength;
	int entryoffset, entrylength;
	};

	struct hfsplus_readdir_data {
	struct list_head list;
	struct file *file;
	struct hfsplus_cat_key key;
	};

	#define hfs_btree_open hfsplus_btree_open
	#define hfs_btree_close hfsplus_btree_close
	#define hfs_btree_write hfsplus_btree_write
	#define hfs_bmap_alloc hfsplus_bmap_alloc
	#define hfs_bmap_free hfsplus_bmap_free
	#define hfs_bnode_read hfsplus_bnode_read
	#define hfs_bnode_read_u16 hfsplus_bnode_read_u16
	#define hfs_bnode_read_u8 hfsplus_bnode_read_u8
	#define hfs_bnode_read_key hfsplus_bnode_read_key
	#define hfs_bnode_write hfsplus_bnode_write
	#define hfs_bnode_write_u16 hfsplus_bnode_write_u16
	#define hfs_bnode_clear hfsplus_bnode_clear
	#define hfs_bnode_copy hfsplus_bnode_copy
	#define hfs_bnode_move hfsplus_bnode_move
	#define hfs_bnode_dump hfsplus_bnode_dump
	#define hfs_bnode_unlink hfsplus_bnode_unlink
	#define hfs_bnode_findhash hfsplus_bnode_findhash
	#define hfs_bnode_find hfsplus_bnode_find
	#define hfs_bnode_unhash hfsplus_bnode_unhash
	#define hfs_bnode_free hfsplus_bnode_free
	#define hfs_bnode_create hfsplus_bnode_create
	#define hfs_bnode_get hfsplus_bnode_get
	#define hfs_bnode_put hfsplus_bnode_put
	#define hfs_brec_lenoff hfsplus_brec_lenoff
	#define hfs_brec_keylen hfsplus_brec_keylen
	#define hfs_brec_insert hfsplus_brec_insert
	#define hfs_brec_remove hfsplus_brec_remove
	#define hfs_find_init hfsplus_find_init
	#define hfs_find_exit hfsplus_find_exit
	#define __hfs_brec_find __hplusfs_brec_find
	#define hfs_brec_find hfsplus_brec_find
	#define hfs_brec_read hfsplus_brec_read
	#define hfs_brec_goto hfsplus_brec_goto
	#define hfs_part_find hfsplus_part_find

	/*
	* definitions for ext2 flag ioctls (linux really needs a generic
	* interface for this).
	*/

	/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support
	* chattr/lsattr */
	#define HFSPLUS_IOC_EXT2_GETFLAGS _IOR('f', 1, long)
	#define HFSPLUS_IOC_EXT2_SETFLAGS _IOW('f', 2, long)

	#define EXT2_FLAG_IMMUTABLE 0x00000010 /* Immutable file */
	#define EXT2_FLAG_APPEND 0x00000020 /* writes to file may only append */
	#define EXT2_FLAG_NODUMP 0x00000040 /* do not dump file */


	/*
	* Functions in any *.c used in other files
	*/

	/* bitmap.c */
	int hfsplus_block_allocate(struct super_block , u32, u32, u32 );
	int hfsplus_block_free(struct super_block *, u32, u32);

	/* btree.c */
	struct hfs_btree hfs_btree_open(struct super_block , u32);
	void hfs_btree_close(struct hfs_btree *);
	void hfs_btree_write(struct hfs_btree *);
	struct hfs_bnode hfs_bmap_alloc(struct hfs_btree );
	void hfs_bmap_free(struct hfs_bnode *);

	/* bnode.c */
	void hfs_bnode_read(struct hfs_bnode , void , int, int);
	u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
	u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
	void hfs_bnode_read_key(struct hfs_bnode , void , int);
	void hfs_bnode_write(struct hfs_bnode , void , int, int);
	void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
	void hfs_bnode_clear(struct hfs_bnode *, int, int);
	void hfs_bnode_copy(struct hfs_bnode *, int,
	struct hfs_bnode *, int, int);
	void hfs_bnode_move(struct hfs_bnode *, int, int, int);
	void hfs_bnode_dump(struct hfs_bnode *);
	void hfs_bnode_unlink(struct hfs_bnode *);
	struct hfs_bnode hfs_bnode_findhash(struct hfs_btree , u32);
	struct hfs_bnode hfs_bnode_find(struct hfs_btree , u32);
	void hfs_bnode_unhash(struct hfs_bnode *);
	void hfs_bnode_free(struct hfs_bnode *);
	struct hfs_bnode hfs_bnode_create(struct hfs_btree , u32);
	void hfs_bnode_get(struct hfs_bnode *);
	void hfs_bnode_put(struct hfs_bnode *);

	/* brec.c */
	u16 hfs_brec_lenoff(struct hfs_bnode , u16, u16 );
	u16 hfs_brec_keylen(struct hfs_bnode *, u16);
	int hfs_brec_insert(struct hfs_find_data , void , int);
	int hfs_brec_remove(struct hfs_find_data *);

	/* bfind.c */
	int hfs_find_init(struct hfs_btree , struct hfs_find_data );
	void hfs_find_exit(struct hfs_find_data *);
	int __hfs_brec_find(struct hfs_bnode , struct hfs_find_data );
	int hfs_brec_find(struct hfs_find_data *);
	int hfs_brec_read(struct hfs_find_data , void , int);
	int hfs_brec_goto(struct hfs_find_data *, int);

	/* catalog.c */
	int hfsplus_cat_cmp_key(hfsplus_btree_key , hfsplus_btree_key );
	void hfsplus_cat_build_key(struct super_block sb, hfsplus_btree_key , u32, struct qstr *);
	int hfsplus_find_cat(struct super_block , u32, struct hfs_find_data );
	int hfsplus_create_cat(u32, struct inode , struct qstr , struct inode *);
	int hfsplus_delete_cat(u32, struct inode , struct qstr );
	int hfsplus_rename_cat(u32, struct inode , struct qstr ,
	struct inode , struct qstr );

	/* extents.c */
	int hfsplus_ext_cmp_key(hfsplus_btree_key , hfsplus_btree_key );
	void hfsplus_ext_write_extent(struct inode *);
	int hfsplus_get_block(struct inode , sector_t, struct buffer_head , int);
	int hfsplus_free_fork(struct super_block , u32, struct hfsplus_fork_raw , int);
	int hfsplus_file_extend(struct inode *);
	void hfsplus_file_truncate(struct inode *);

	/* inode.c */
	extern struct address_space_operations hfsplus_aops;
	extern struct address_space_operations hfsplus_btree_aops;

	void hfsplus_inode_read_fork(struct inode , struct hfsplus_fork_raw );
	void hfsplus_inode_write_fork(struct inode , struct hfsplus_fork_raw );
	int hfsplus_cat_read_inode(struct inode , struct hfs_find_data );
	int hfsplus_cat_write_inode(struct inode *);
	struct inode hfsplus_new_inode(struct super_block , int);
	void hfsplus_delete_inode(struct inode *);

	/* ioctl.c */
	int hfsplus_ioctl(struct inode inode, struct file filp, unsigned int cmd,
	unsigned long arg);
	int hfsplus_setxattr(struct dentry dentry, const char name,
	const void *value, size_t size, int flags);
	ssize_t hfsplus_getxattr(struct dentry dentry, const char name,
	void *value, size_t size);
	ssize_t hfsplus_listxattr(struct dentry dentry, char buffer, size_t size);

	/* options.c */
	int hfsplus_parse_options(char , struct hfsplus_sb_info );
	void hfsplus_fill_defaults(struct hfsplus_sb_info *);
	int hfsplus_show_options(struct seq_file , struct vfsmount );

	/* tables.c */
	extern u16 hfsplus_case_fold_table[];
	extern u16 hfsplus_decompose_table[];
	extern u16 hfsplus_compose_table[];

	/* unicode.c */
	int hfsplus_unistrcmp(const struct hfsplus_unistr , const struct hfsplus_unistr );
	int hfsplus_uni2asc(struct super_block , const struct hfsplus_unistr , char , int );
	int hfsplus_asc2uni(struct super_block , struct hfsplus_unistr , const char *, int);

	/* wrapper.c */
	int hfsplus_read_wrapper(struct super_block *);

	int hfs_part_find(struct super_block , sector_t , sector_t *);

	/* access macros */
	/*
	static inline struct hfsplus_sb_info HFSPLUS_SB(struct super_block sb)
	{
	return sb->s_fs_info;
	}
	static inline struct hfsplus_inode_info HFSPLUS_I(struct inode inode)
	{
	return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
	}
	*/
	#define HFSPLUS_SB(super) ((struct hfsplus_sb_info )(super)->s_fs_info)
	#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode))

	#if 1
	#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); })
	#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; })
	#else
	#define hfsplus_kmap(p) kmap(p)
	#define hfsplus_kunmap(p) kunmap(p)
	#endif

	#define sb_bread512(sb, sec, data) ({ \
	struct buffer_head *__bh; \
	sector_t __block; \
	loff_t __start; \
	int __offset; \
	\
	__start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\
	__block = __start >> (sb)->s_blocksize_bits; \
	__offset = __start & ((sb)->s_blocksize - 1); \
	__bh = sb_bread((sb), __block); \
	if (likely(__bh != NULL)) \
	data = (void *)(__bh->b_data + __offset);\
	else \
	data = NULL; \
	__bh; \
	})

	/* time macros */
	#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
	#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U))

	/* compatibility */
	#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
	#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
	#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())

	#define kdev_t_to_nr(x) (x)

	#endif