[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / hfsplus / hfsplus_fs.h

/*
 *  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
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/linux/hfsplus_fs.h
	3	*
	4	* Copyright (C) 1999
	5	* Brad Boyer (flar@pants.nu)
	6	* (C) 2003 Ardis Technologies <roman@ardistech.com>
	7	*
	8	*/
	9
	10	#ifndef _LINUX_HFSPLUS_FS_H
	11	#define _LINUX_HFSPLUS_FS_H
	12
	13	#include <linux/fs.h>
1da177e4 LT	14	#include <linux/buffer_head.h>
	15	#include "hfsplus_raw.h"
	16
	17	#define DBG_BNODE_REFS 0x00000001
	18	#define DBG_BNODE_MOD 0x00000002
	19	#define DBG_CAT_MOD 0x00000004
	20	#define DBG_INODE 0x00000008
	21	#define DBG_SUPER 0x00000010
	22	#define DBG_EXTENT 0x00000020
	23	#define DBG_BITMAP 0x00000040
	24
	25	//#define DBG_MASK (DBG_EXTENT\|DBG_INODE\|DBG_BNODE_MOD)
	26	//#define DBG_MASK (DBG_BNODE_MOD\|DBG_CAT_MOD\|DBG_INODE)
	27	//#define DBG_MASK (DBG_CAT_MOD\|DBG_BNODE_REFS\|DBG_INODE\|DBG_EXTENT)
	28	#define DBG_MASK (0)
	29
	30	#define dprint(flg, fmt, args...) \
	31	if (flg & DBG_MASK) printk(fmt , ## args)
	32
	33	/* Runtime config options */
	34	#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */
	35
	36	#define HFSPLUS_TYPE_DATA 0x00
	37	#define HFSPLUS_TYPE_RSRC 0xFF
	38
	39	typedef int (btree_keycmp)(hfsplus_btree_key , hfsplus_btree_key *);
	40
	41	#define NODE_HASH_SIZE 256
	42
	43	/* An HFS+ BTree held in memory */
	44	struct hfs_btree {
	45	struct super_block *sb;
	46	struct inode *inode;
	47	btree_keycmp keycmp;
	48
	49	u32 cnid;
	50	u32 root;
	51	u32 leaf_count;
	52	u32 leaf_head;
	53	u32 leaf_tail;
	54	u32 node_count;
	55	u32 free_nodes;
	56	u32 attributes;
	57
	58	unsigned int node_size;
	59	unsigned int node_size_shift;
	60	unsigned int max_key_len;
	61	unsigned int depth;
	62
	63	//unsigned int map1_size, map_size;
	64	struct semaphore tree_lock;
	65
	66	unsigned int pages_per_bnode;
	67	spinlock_t hash_lock;
	68	struct hfs_bnode *node_hash[NODE_HASH_SIZE];
	69	int node_hash_cnt;
	70	};
	71
	72	struct page;
	73
	74	/* An HFS+ BTree node in memory */
	75	struct hfs_bnode {
	76	struct hfs_btree *tree;
	77
78	u32 prev;
79	u32 this;
80	u32 next;
81	u32 parent;
82
83	u16 num_recs;
84	u8 type;
85	u8 height;
86
87	struct hfs_bnode *next_hash;
88	unsigned long flags;
89	wait_queue_head_t lock_wq;
90	atomic_t refcnt;
91	unsigned int page_offset;
92	struct page *page[0];
93	};
94
95	#define HFS_BNODE_LOCK 0
96	#define HFS_BNODE_ERROR 1
97	#define HFS_BNODE_NEW 2
98	#define HFS_BNODE_DIRTY 3
99	#define HFS_BNODE_DELETED 4
100
101	/*
102	* HFS+ superblock info (built from Volume Header on disk)
103	*/
104
105	struct hfsplus_vh;
106	struct hfs_btree;
107
108	struct hfsplus_sb_info {
109	struct buffer_head *s_vhbh;
110	struct hfsplus_vh *s_vhdr;
111	struct hfs_btree *ext_tree;
112	struct hfs_btree *cat_tree;
113	struct hfs_btree *attr_tree;
114	struct inode *alloc_file;
115	struct inode *hidden_dir;
116	struct nls_table *nls;
117
118	/* Runtime variables */
119	u32 blockoffset;
120	u32 sect_count;
121	int fs_shift;
122
123	/* Stuff in host order from Vol Header */
124	u32 alloc_blksz;
125	int alloc_blksz_shift;
126	u32 total_blocks;
127	u32 free_blocks;
128	u32 next_alloc;
129	u32 next_cnid;
130	u32 file_count;
131	u32 folder_count;
132	u32 data_clump_blocks, rsrc_clump_blocks;
133
134	/* Config options */
135	u32 creator;
136	u32 type;
137
138	umode_t umask;
139	uid_t uid;
140	gid_t gid;
141
142	int part, session;
143
144	unsigned long flags;
145
1da177e4 LT	146	struct hlist_head rsrc_inodes;
	147	};
	148
	149	#define HFSPLUS_SB_WRITEBACKUP 0x0001
	150	#define HFSPLUS_SB_NODECOMPOSE 0x0002
b0b623c3	151	#define HFSPLUS_SB_FORCE 0x0004
1da177e4 LT	152
	153
	154	struct hfsplus_inode_info {
	155	struct semaphore extents_lock;
	156	u32 clump_blocks, alloc_blocks;
	157	sector_t fs_blocks;
	158	/* Allocation extents from catalog record or volume header */
	159	hfsplus_extent_rec first_extents;
	160	u32 first_blocks;
	161	hfsplus_extent_rec cached_extents;
	162	u32 cached_start, cached_blocks;
	163	atomic_t opencnt;
	164
	165	struct inode *rsrc_inode;
	166	unsigned long flags;
	167
	168	/* Device number in hfsplus_permissions in catalog */
	169	u32 dev;
	170	/* BSD system and user file flags */
	171	u8 rootflags;
	172	u8 userflags;
	173
	174	struct list_head open_dir_list;
	175	loff_t phys_size;
	176	struct inode vfs_inode;
	177	};
	178
	179	#define HFSPLUS_FLG_RSRC 0x0001
	180	#define HFSPLUS_FLG_EXT_DIRTY 0x0002
	181	#define HFSPLUS_FLG_EXT_NEW 0x0004
	182
	183	#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC))
	184	#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)
	185
	186	struct hfs_find_data {
	187	/* filled by caller */
	188	hfsplus_btree_key *search_key;
	189	hfsplus_btree_key *key;
	190	/* filled by find */
	191	struct hfs_btree *tree;
	192	struct hfs_bnode *bnode;
	193	/* filled by findrec */
	194	int record;
	195	int keyoffset, keylength;
	196	int entryoffset, entrylength;
	197	};
	198
	199	struct hfsplus_readdir_data {
	200	struct list_head list;
	201	struct file *file;
	202	struct hfsplus_cat_key key;
	203	};
	204
	205	#define hfs_btree_open hfsplus_btree_open
	206	#define hfs_btree_close hfsplus_btree_close
	207	#define hfs_btree_write hfsplus_btree_write
	208	#define hfs_bmap_alloc hfsplus_bmap_alloc
	209	#define hfs_bmap_free hfsplus_bmap_free
	210	#define hfs_bnode_read hfsplus_bnode_read
	211	#define hfs_bnode_read_u16 hfsplus_bnode_read_u16
	212	#define hfs_bnode_read_u8 hfsplus_bnode_read_u8
	213	#define hfs_bnode_read_key hfsplus_bnode_read_key
	214	#define hfs_bnode_write hfsplus_bnode_write
	215	#define hfs_bnode_write_u16 hfsplus_bnode_write_u16
216	#define hfs_bnode_clear hfsplus_bnode_clear
217	#define hfs_bnode_copy hfsplus_bnode_copy
218	#define hfs_bnode_move hfsplus_bnode_move
219	#define hfs_bnode_dump hfsplus_bnode_dump
220	#define hfs_bnode_unlink hfsplus_bnode_unlink
221	#define hfs_bnode_findhash hfsplus_bnode_findhash
222	#define hfs_bnode_find hfsplus_bnode_find
223	#define hfs_bnode_unhash hfsplus_bnode_unhash
224	#define hfs_bnode_free hfsplus_bnode_free
225	#define hfs_bnode_create hfsplus_bnode_create
226	#define hfs_bnode_get hfsplus_bnode_get
227	#define hfs_bnode_put hfsplus_bnode_put
228	#define hfs_brec_lenoff hfsplus_brec_lenoff
229	#define hfs_brec_keylen hfsplus_brec_keylen
230	#define hfs_brec_insert hfsplus_brec_insert
231	#define hfs_brec_remove hfsplus_brec_remove
232	#define hfs_find_init hfsplus_find_init
233	#define hfs_find_exit hfsplus_find_exit
234	#define __hfs_brec_find __hplusfs_brec_find
235	#define hfs_brec_find hfsplus_brec_find
236	#define hfs_brec_read hfsplus_brec_read
237	#define hfs_brec_goto hfsplus_brec_goto
238	#define hfs_part_find hfsplus_part_find
239
240	/*
241	* definitions for ext2 flag ioctls (linux really needs a generic
242	* interface for this).
243	*/
244
245	/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support
246	* chattr/lsattr */
247	#define HFSPLUS_IOC_EXT2_GETFLAGS _IOR('f', 1, long)
248	#define HFSPLUS_IOC_EXT2_SETFLAGS _IOW('f', 2, long)
249
250	#define EXT2_FLAG_IMMUTABLE 0x00000010 /* Immutable file */
251	#define EXT2_FLAG_APPEND 0x00000020 /* writes to file may only append */
252	#define EXT2_FLAG_NODUMP 0x00000040 /* do not dump file */
253
254
255	/*
256	* Functions in any *.c used in other files
257	*/
258
259	/* bitmap.c */
260	int hfsplus_block_allocate(struct super_block , u32, u32, u32 );
261	int hfsplus_block_free(struct super_block *, u32, u32);
262
263	/* btree.c */
264	struct hfs_btree hfs_btree_open(struct super_block , u32);
265	void hfs_btree_close(struct hfs_btree *);
266	void hfs_btree_write(struct hfs_btree *);
267	struct hfs_bnode hfs_bmap_alloc(struct hfs_btree );
268	void hfs_bmap_free(struct hfs_bnode *);
269
270	/* bnode.c */
271	void hfs_bnode_read(struct hfs_bnode , void , int, int);
272	u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
273	u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
274	void hfs_bnode_read_key(struct hfs_bnode , void , int);
275	void hfs_bnode_write(struct hfs_bnode , void , int, int);
276	void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
277	void hfs_bnode_clear(struct hfs_bnode *, int, int);
278	void hfs_bnode_copy(struct hfs_bnode *, int,
279	struct hfs_bnode *, int, int);
280	void hfs_bnode_move(struct hfs_bnode *, int, int, int);
281	void hfs_bnode_dump(struct hfs_bnode *);
282	void hfs_bnode_unlink(struct hfs_bnode *);
283	struct hfs_bnode hfs_bnode_findhash(struct hfs_btree , u32);
284	struct hfs_bnode hfs_bnode_find(struct hfs_btree , u32);
285	void hfs_bnode_unhash(struct hfs_bnode *);
286	void hfs_bnode_free(struct hfs_bnode *);
287	struct hfs_bnode hfs_bnode_create(struct hfs_btree , u32);
288	void hfs_bnode_get(struct hfs_bnode *);
289	void hfs_bnode_put(struct hfs_bnode *);
290
291	/* brec.c */
292	u16 hfs_brec_lenoff(struct hfs_bnode , u16, u16 );
293	u16 hfs_brec_keylen(struct hfs_bnode *, u16);
294	int hfs_brec_insert(struct hfs_find_data , void , int);
295	int hfs_brec_remove(struct hfs_find_data *);
296
297	/* bfind.c */
298	int hfs_find_init(struct hfs_btree , struct hfs_find_data );
299	void hfs_find_exit(struct hfs_find_data *);
300	int __hfs_brec_find(struct hfs_bnode , struct hfs_find_data );
301	int hfs_brec_find(struct hfs_find_data *);
302	int hfs_brec_read(struct hfs_find_data , void , int);
303	int hfs_brec_goto(struct hfs_find_data *, int);
304
305	/* catalog.c */
306	int hfsplus_cat_cmp_key(hfsplus_btree_key , hfsplus_btree_key );
307	void hfsplus_cat_build_key(struct super_block sb, hfsplus_btree_key , u32, struct qstr *);
308	int hfsplus_find_cat(struct super_block , u32, struct hfs_find_data );
309	int hfsplus_create_cat(u32, struct inode , struct qstr , struct inode *);
310	int hfsplus_delete_cat(u32, struct inode , struct qstr );
311	int hfsplus_rename_cat(u32, struct inode , struct qstr ,
312	struct inode , struct qstr );
313
314	/* extents.c */
315	int hfsplus_ext_cmp_key(hfsplus_btree_key , hfsplus_btree_key );
316	void hfsplus_ext_write_extent(struct inode *);
317	int hfsplus_get_block(struct inode , sector_t, struct buffer_head , int);
318	int hfsplus_free_fork(struct super_block , u32, struct hfsplus_fork_raw , int);
319	int hfsplus_file_extend(struct inode *);
320	void hfsplus_file_truncate(struct inode *);
321
322	/* inode.c */
323	extern struct address_space_operations hfsplus_aops;
324	extern struct address_space_operations hfsplus_btree_aops;
325
326	void hfsplus_inode_read_fork(struct inode , struct hfsplus_fork_raw );
327	void hfsplus_inode_write_fork(struct inode , struct hfsplus_fork_raw );
328	int hfsplus_cat_read_inode(struct inode , struct hfs_find_data );
329	int hfsplus_cat_write_inode(struct inode *);
330	struct inode hfsplus_new_inode(struct super_block , int);
331	void hfsplus_delete_inode(struct inode *);
332
333	/* ioctl.c */
334	int hfsplus_ioctl(struct inode inode, struct file filp, unsigned int cmd,
335	unsigned long arg);
336	int hfsplus_setxattr(struct dentry dentry, const char name,
337	const void *value, size_t size, int flags);
338	ssize_t hfsplus_getxattr(struct dentry dentry, const char name,
339	void *value, size_t size);
340	ssize_t hfsplus_listxattr(struct dentry dentry, char buffer, size_t size);
341
342	/* options.c */
717dd80e RZ	343	int hfsplus_parse_options(char , struct hfsplus_sb_info );
	344	void hfsplus_fill_defaults(struct hfsplus_sb_info *);
	345	int hfsplus_show_options(struct seq_file , struct vfsmount );
1da177e4 LT	346
	347	/* tables.c */
	348	extern u16 hfsplus_case_fold_table[];
	349	extern u16 hfsplus_decompose_table[];
	350	extern u16 hfsplus_compose_table[];
	351
	352	/* unicode.c */
	353	int hfsplus_unistrcmp(const struct hfsplus_unistr , const struct hfsplus_unistr );
	354	int hfsplus_uni2asc(struct super_block , const struct hfsplus_unistr , char , int );
	355	int hfsplus_asc2uni(struct super_block , struct hfsplus_unistr , const char *, int);
	356
	357	/* wrapper.c */
	358	int hfsplus_read_wrapper(struct super_block *);
	359
	360	int hfs_part_find(struct super_block , sector_t , sector_t *);
	361
	362	/* access macros */
	363	/*
	364	static inline struct hfsplus_sb_info HFSPLUS_SB(struct super_block sb)
	365	{
	366	return sb->s_fs_info;
	367	}
	368	static inline struct hfsplus_inode_info HFSPLUS_I(struct inode inode)
	369	{
	370	return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
	371	}
	372	*/
	373	#define HFSPLUS_SB(super) ((struct hfsplus_sb_info )(super)->s_fs_info)
	374	#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode))
	375
	376	#if 1
	377	#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); })
	378	#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; })
	379	#else
	380	#define hfsplus_kmap(p) kmap(p)
	381	#define hfsplus_kunmap(p) kunmap(p)
	382	#endif
	383
	384	#define sb_bread512(sb, sec, data) ({ \
	385	struct buffer_head *__bh; \
	386	sector_t __block; \
	387	loff_t __start; \
	388	int __offset; \
	389	\
	390	__start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\
	391	__block = __start >> (sb)->s_blocksize_bits; \
	392	__offset = __start & ((sb)->s_blocksize - 1); \
	393	__bh = sb_bread((sb), __block); \
	394	if (likely(__bh != NULL)) \
	395	data = (void *)(__bh->b_data + __offset);\
	396	else \
	397	data = NULL; \
	398	__bh; \
	399	})
	400
	401	/* time macros */
	402	#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
	403	#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U))
	404
	405	/* compatibility */
	406	#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
	407	#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
	408	#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
	409
410	#define kdev_t_to_nr(x) (x)
411
412	#endif