[linux.git] / fs / hfsplus / hfsplus_fs.h

/*
 *  linux/include/linux/hfsplus_fs.h
 *
 * Copyright (C) 1999
 * Brad Boyer ([email protected])
 * (C) 2003 Ardis Technologies <[email protected]>
 *
 */

#ifndef _LINUX_HFSPLUS_FS_H
#define _LINUX_HFSPLUS_FS_H

#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/buffer_head.h>
#include <linux/blkdev.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

#if 0
#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)
#endif
#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)(const hfsplus_btree_key *,
		const 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;

	struct mutex 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 {
	void *s_vhdr_buf;
	struct hfsplus_vh *s_vhdr;
	void *s_backup_vhdr_buf;
	struct hfsplus_vh *s_backup_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;
	sector_t part_start;
	sector_t sect_count;
	int fs_shift;

	/* immutable data from the volume header */
	u32 alloc_blksz;
	int alloc_blksz_shift;
	u32 total_blocks;
	u32 data_clump_blocks, rsrc_clump_blocks;

	/* mutable data from the volume header, protected by alloc_mutex */
	u32 free_blocks;
	struct mutex alloc_mutex;

	/* mutable data from the volume header, protected by vh_mutex */
	u32 next_cnid;
	u32 file_count;
	u32 folder_count;
	struct mutex vh_mutex;

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

	umode_t umask;
	kuid_t uid;
	kgid_t gid;

	int part, session;
	unsigned long flags;

	int work_queued;               /* non-zero delayed work is queued */
	struct delayed_work sync_work; /* FS sync delayed work */
	spinlock_t work_lock;          /* protects sync_work and work_queued */
};

#define HFSPLUS_SB_WRITEBACKUP	0
#define HFSPLUS_SB_NODECOMPOSE	1
#define HFSPLUS_SB_FORCE	2
#define HFSPLUS_SB_HFSX		3
#define HFSPLUS_SB_CASEFOLD	4
#define HFSPLUS_SB_NOBARRIER	5

static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}


struct hfsplus_inode_info {
	atomic_t opencnt;

	/*
	 * Extent allocation information, protected by extents_lock.
	 */
	u32 first_blocks;
	u32 clump_blocks;
	u32 alloc_blocks;
	u32 cached_start;
	u32 cached_blocks;
	hfsplus_extent_rec first_extents;
	hfsplus_extent_rec cached_extents;
	unsigned int extent_state;
	struct mutex extents_lock;

	/*
	 * Immutable data.
	 */
	struct inode *rsrc_inode;
	__be32 create_date;

	/*
	 * Protected by sbi->vh_mutex.
	 */
	u32 linkid;

	/*
	 * Accessed using atomic bitops.
	 */
	unsigned long flags;

	/*
	 * Protected by i_mutex.
	 */
	sector_t fs_blocks;
	u8 userflags;		/* BSD user file flags */
	struct list_head open_dir_list;
	loff_t phys_size;

	struct inode vfs_inode;
};

#define HFSPLUS_EXT_DIRTY	0x0001
#define HFSPLUS_EXT_NEW		0x0002

#define HFSPLUS_I_RSRC		0	/* represents a resource fork */
#define HFSPLUS_I_CAT_DIRTY	1	/* has changes in the catalog tree */
#define HFSPLUS_I_EXT_DIRTY	2	/* has changes in the extent tree */
#define HFSPLUS_I_ALLOC_DIRTY	3	/* has changes in the allocation file */

#define HFSPLUS_IS_RSRC(inode) \
	test_bit(HFSPLUS_I_RSRC, &HFSPLUS_I(inode)->flags)

static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
{
	return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
}

/*
 * Mark an inode dirty, and also mark the btree in which the
 * specific type of metadata is stored.
 * For data or metadata that gets written back by into the catalog btree
 * by hfsplus_write_inode a plain mark_inode_dirty call is enough.
 */
static inline void hfsplus_mark_inode_dirty(struct inode *inode,
		unsigned int flag)
{
	set_bit(flag, &HFSPLUS_I(inode)->flags);
	mark_inode_dirty(inode);
}

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;
};

/*
 * Find minimum acceptible I/O size for an hfsplus sb.
 */
static inline unsigned short hfsplus_min_io_size(struct super_block *sb)
{
	return max_t(unsigned short, bdev_logical_block_size(sb->s_bdev),
		     HFSPLUS_SECTOR_SIZE);
}

#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	FS_IOC_GETFLAGS
#define HFSPLUS_IOC_EXT2_SETFLAGS	FS_IOC_SETFLAGS


/*
 * hfs+-specific ioctl for making the filesystem bootable
 */
#define HFSPLUS_IOC_BLESS _IO('h', 0x80)

/*
 * 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_case_cmp_key(const hfsplus_btree_key *,
		const hfsplus_btree_key *);
int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *,
		const 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 *);
void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms);

/* dir.c */
extern const struct inode_operations hfsplus_dir_inode_operations;
extern const struct file_operations hfsplus_dir_operations;

/* extents.c */
int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *);
int 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 const struct address_space_operations hfsplus_aops;
extern const struct address_space_operations hfsplus_btree_aops;
extern const struct dentry_operations hfsplus_dentry_operations;

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 *, umode_t);
void hfsplus_delete_inode(struct inode *);
int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
		       int datasync);

/* ioctl.c */
long hfsplus_ioctl(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 *);
int hfsplus_parse_options_remount(char *input, int *force);
void hfsplus_fill_defaults(struct hfsplus_sb_info *);
int hfsplus_show_options(struct seq_file *, struct dentry *);

/* super.c */
struct inode *hfsplus_iget(struct super_block *, unsigned long);
void hfsplus_mark_mdb_dirty(struct super_block *sb);

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

/* unicode.c */
int hfsplus_strcasecmp(const struct hfsplus_unistr *,
		const struct hfsplus_unistr *);
int hfsplus_strcmp(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);
int hfsplus_hash_dentry(const struct dentry *dentry,
		const struct inode *inode, struct qstr *str);
int hfsplus_compare_dentry(const struct dentry *parent,
		const struct inode *pinode,
		const struct dentry *dentry, const struct inode *inode,
		unsigned int len, const char *str, const struct qstr *name);

/* wrapper.c */
int hfsplus_read_wrapper(struct super_block *);
int hfs_part_find(struct super_block *, sector_t *, sector_t *);
int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
		void *buf, void **data, int rw);

/* 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())

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/linux/hfsplus_fs.h
	3	*
	4	* Copyright (C) 1999
	5	* Brad Boyer ([email protected])
	6	* (C) 2003 Ardis Technologies <[email protected]>
	7	*
	8	*/
	9
	10	#ifndef _LINUX_HFSPLUS_FS_H
	11	#define _LINUX_HFSPLUS_FS_H
	12
	13	#include <linux/fs.h>
895c23f8	14	#include <linux/mutex.h>
1da177e4	15	#include <linux/buffer_head.h>
6596528e	16	#include <linux/blkdev.h>
1da177e4 LT	17	#include "hfsplus_raw.h"
	18
	19	#define DBG_BNODE_REFS 0x00000001
	20	#define DBG_BNODE_MOD 0x00000002
	21	#define DBG_CAT_MOD 0x00000004
	22	#define DBG_INODE 0x00000008
	23	#define DBG_SUPER 0x00000010
	24	#define DBG_EXTENT 0x00000020
	25	#define DBG_BITMAP 0x00000040
	26
21f2296a AS	27	#if 0
	28	#define DBG_MASK (DBG_EXTENT\|DBG_INODE\|DBG_BNODE_MOD)
	29	#define DBG_MASK (DBG_BNODE_MOD\|DBG_CAT_MOD\|DBG_INODE)
	30	#define DBG_MASK (DBG_CAT_MOD\|DBG_BNODE_REFS\|DBG_INODE\|DBG_EXTENT)
	31	#endif
1da177e4 LT	32	#define DBG_MASK (0)
	33
	34	#define dprint(flg, fmt, args...) \
b2837fcf AS	35	if (flg & DBG_MASK) \
b2837fcf AS	36	printk(fmt , ## args)
1da177e4 LT	37
	38	/* Runtime config options */
	39	#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */
	40
	41	#define HFSPLUS_TYPE_DATA 0x00
	42	#define HFSPLUS_TYPE_RSRC 0xFF
	43
2753cc28 AS	44	typedef int (btree_keycmp)(const hfsplus_btree_key ,
2753cc28 AS	45	const hfsplus_btree_key *);
1da177e4 LT	46
	47	#define NODE_HASH_SIZE 256
	48
	49	/* An HFS+ BTree held in memory */
	50	struct hfs_btree {
	51	struct super_block *sb;
	52	struct inode *inode;
	53	btree_keycmp keycmp;
	54
	55	u32 cnid;
	56	u32 root;
	57	u32 leaf_count;
	58	u32 leaf_head;
	59	u32 leaf_tail;
	60	u32 node_count;
	61	u32 free_nodes;
	62	u32 attributes;
	63
	64	unsigned int node_size;
	65	unsigned int node_size_shift;
	66	unsigned int max_key_len;
	67	unsigned int depth;
	68
467c3d9c	69	struct mutex tree_lock;
1da177e4 LT	70
	71	unsigned int pages_per_bnode;
	72	spinlock_t hash_lock;
	73	struct hfs_bnode *node_hash[NODE_HASH_SIZE];
	74	int node_hash_cnt;
	75	};
	76
	77	struct page;
	78
	79	/* An HFS+ BTree node in memory */
	80	struct hfs_bnode {
	81	struct hfs_btree *tree;
	82
	83	u32 prev;
	84	u32 this;
	85	u32 next;
	86	u32 parent;
	87
	88	u16 num_recs;
	89	u8 type;
	90	u8 height;
	91
	92	struct hfs_bnode *next_hash;
	93	unsigned long flags;
	94	wait_queue_head_t lock_wq;
	95	atomic_t refcnt;
	96	unsigned int page_offset;
	97	struct page *page[0];
	98	};
	99
	100	#define HFS_BNODE_LOCK 0
	101	#define HFS_BNODE_ERROR 1
	102	#define HFS_BNODE_NEW 2
	103	#define HFS_BNODE_DIRTY 3
	104	#define HFS_BNODE_DELETED 4
	105
	106	/*
	107	* HFS+ superblock info (built from Volume Header on disk)
	108	*/
	109
	110	struct hfsplus_vh;
	111	struct hfs_btree;
	112
	113	struct hfsplus_sb_info {
6596528e	114	void *s_vhdr_buf;
1da177e4	115	struct hfsplus_vh *s_vhdr;
6596528e	116	void *s_backup_vhdr_buf;
52399b17	117	struct hfsplus_vh *s_backup_vhdr;
1da177e4 LT	118	struct hfs_btree *ext_tree;
	119	struct hfs_btree *cat_tree;
	120	struct hfs_btree *attr_tree;
	121	struct inode *alloc_file;
	122	struct inode *hidden_dir;
	123	struct nls_table *nls;
	124
	125	/* Runtime variables */
	126	u32 blockoffset;
52399b17 CH	127	sector_t part_start;
52399b17 CH	128	sector_t sect_count;
1da177e4 LT	129	int fs_shift;
1da177e4 LT	130
7ac9fb9c	131	/* immutable data from the volume header */
1da177e4 LT	132	u32 alloc_blksz;
	133	int alloc_blksz_shift;
	134	u32 total_blocks;
7ac9fb9c CH	135	u32 data_clump_blocks, rsrc_clump_blocks;
	136
	137	/* mutable data from the volume header, protected by alloc_mutex */
1da177e4	138	u32 free_blocks;
7ac9fb9c CH	139	struct mutex alloc_mutex;
	140
	141	/* mutable data from the volume header, protected by vh_mutex */
1da177e4 LT	142	u32 next_cnid;
	143	u32 file_count;
	144	u32 folder_count;
7ac9fb9c	145	struct mutex vh_mutex;
1da177e4 LT	146
	147	/* Config options */
	148	u32 creator;
	149	u32 type;
	150
	151	umode_t umask;
16525e3f EB	152	kuid_t uid;
16525e3f EB	153	kgid_t gid;
1da177e4 LT	154
1da177e4 LT	155	int part, session;
1da177e4	156	unsigned long flags;
9e6c5829 AB	157
	158	int work_queued; /* non-zero delayed work is queued */
	159	struct delayed_work sync_work; /* FS sync delayed work */
	160	spinlock_t work_lock; /* protects sync_work and work_queued */
1da177e4 LT	161	};
1da177e4 LT	162
84adede3 CH	163	#define HFSPLUS_SB_WRITEBACKUP 0
	164	#define HFSPLUS_SB_NODECOMPOSE 1
	165	#define HFSPLUS_SB_FORCE 2
	166	#define HFSPLUS_SB_HFSX 3
	167	#define HFSPLUS_SB_CASEFOLD 4
34a2d313	168	#define HFSPLUS_SB_NOBARRIER 5
1da177e4	169
e3494705 CH	170	static inline struct hfsplus_sb_info HFSPLUS_SB(struct super_block sb)
	171	{
	172	return sb->s_fs_info;
	173	}
1da177e4 LT	174
	175
	176	struct hfsplus_inode_info {
1da177e4 LT	177	atomic_t opencnt;
1da177e4 LT	178
7fcc99f4 CH	179	/*
	180	* Extent allocation information, protected by extents_lock.
	181	*/
	182	u32 first_blocks;
	183	u32 clump_blocks;
	184	u32 alloc_blocks;
	185	u32 cached_start;
	186	u32 cached_blocks;
	187	hfsplus_extent_rec first_extents;
	188	hfsplus_extent_rec cached_extents;
b33b7921	189	unsigned int extent_state;
7fcc99f4	190	struct mutex extents_lock;
1da177e4	191
7fcc99f4 CH	192	/*
	193	* Immutable data.
	194	*/
	195	struct inode *rsrc_inode;
9a4cad95	196	__be32 create_date;
f6089ff8 CH	197
	198	/*
	199	* Protected by sbi->vh_mutex.
	200	*/
	201	u32 linkid;
1da177e4	202
b33b7921 CH	203	/*
	204	* Accessed using atomic bitops.
	205	*/
	206	unsigned long flags;
	207
7fcc99f4 CH	208	/*
	209	* Protected by i_mutex.
	210	*/
	211	sector_t fs_blocks;
722c55d1	212	u8 userflags; /* BSD user file flags */
1da177e4 LT	213	struct list_head open_dir_list;
1da177e4 LT	214	loff_t phys_size;
7fcc99f4	215
1da177e4 LT	216	struct inode vfs_inode;
	217	};
	218
b33b7921 CH	219	#define HFSPLUS_EXT_DIRTY 0x0001
	220	#define HFSPLUS_EXT_NEW 0x0002
	221
	222	#define HFSPLUS_I_RSRC 0 /* represents a resource fork */
e3494705 CH	223	#define HFSPLUS_I_CAT_DIRTY 1 /* has changes in the catalog tree */
	224	#define HFSPLUS_I_EXT_DIRTY 2 /* has changes in the extent tree */
	225	#define HFSPLUS_I_ALLOC_DIRTY 3 /* has changes in the allocation file */
1da177e4	226
b33b7921 CH	227	#define HFSPLUS_IS_RSRC(inode) \
b33b7921 CH	228	test_bit(HFSPLUS_I_RSRC, &HFSPLUS_I(inode)->flags)
1da177e4	229
e3494705 CH	230	static inline struct hfsplus_inode_info HFSPLUS_I(struct inode inode)
	231	{
	232	return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
	233	}
1da177e4	234
e3494705 CH	235	/*
	236	* Mark an inode dirty, and also mark the btree in which the
	237	* specific type of metadata is stored.
	238	* For data or metadata that gets written back by into the catalog btree
	239	* by hfsplus_write_inode a plain mark_inode_dirty call is enough.
	240	*/
	241	static inline void hfsplus_mark_inode_dirty(struct inode *inode,
	242	unsigned int flag)
	243	{
	244	set_bit(flag, &HFSPLUS_I(inode)->flags);
	245	mark_inode_dirty(inode);
	246	}
1da177e4 LT	247
	248	struct hfs_find_data {
	249	/* filled by caller */
	250	hfsplus_btree_key *search_key;
	251	hfsplus_btree_key *key;
	252	/* filled by find */
	253	struct hfs_btree *tree;
	254	struct hfs_bnode *bnode;
	255	/* filled by findrec */
	256	int record;
	257	int keyoffset, keylength;
	258	int entryoffset, entrylength;
	259	};
	260
	261	struct hfsplus_readdir_data {
	262	struct list_head list;
	263	struct file *file;
	264	struct hfsplus_cat_key key;
	265	};
	266
6596528e SF	267	/*
	268	* Find minimum acceptible I/O size for an hfsplus sb.
	269	*/
	270	static inline unsigned short hfsplus_min_io_size(struct super_block *sb)
	271	{
	272	return max_t(unsigned short, bdev_logical_block_size(sb->s_bdev),
	273	HFSPLUS_SECTOR_SIZE);
	274	}
	275
1da177e4 LT	276	#define hfs_btree_open hfsplus_btree_open
	277	#define hfs_btree_close hfsplus_btree_close
	278	#define hfs_btree_write hfsplus_btree_write
	279	#define hfs_bmap_alloc hfsplus_bmap_alloc
	280	#define hfs_bmap_free hfsplus_bmap_free
	281	#define hfs_bnode_read hfsplus_bnode_read
	282	#define hfs_bnode_read_u16 hfsplus_bnode_read_u16
	283	#define hfs_bnode_read_u8 hfsplus_bnode_read_u8
	284	#define hfs_bnode_read_key hfsplus_bnode_read_key
	285	#define hfs_bnode_write hfsplus_bnode_write
	286	#define hfs_bnode_write_u16 hfsplus_bnode_write_u16
	287	#define hfs_bnode_clear hfsplus_bnode_clear
	288	#define hfs_bnode_copy hfsplus_bnode_copy
	289	#define hfs_bnode_move hfsplus_bnode_move
	290	#define hfs_bnode_dump hfsplus_bnode_dump
	291	#define hfs_bnode_unlink hfsplus_bnode_unlink
	292	#define hfs_bnode_findhash hfsplus_bnode_findhash
	293	#define hfs_bnode_find hfsplus_bnode_find
	294	#define hfs_bnode_unhash hfsplus_bnode_unhash
	295	#define hfs_bnode_free hfsplus_bnode_free
	296	#define hfs_bnode_create hfsplus_bnode_create
	297	#define hfs_bnode_get hfsplus_bnode_get
	298	#define hfs_bnode_put hfsplus_bnode_put
	299	#define hfs_brec_lenoff hfsplus_brec_lenoff
	300	#define hfs_brec_keylen hfsplus_brec_keylen
	301	#define hfs_brec_insert hfsplus_brec_insert
	302	#define hfs_brec_remove hfsplus_brec_remove
	303	#define hfs_find_init hfsplus_find_init
	304	#define hfs_find_exit hfsplus_find_exit
	305	#define __hfs_brec_find __hplusfs_brec_find
	306	#define hfs_brec_find hfsplus_brec_find
	307	#define hfs_brec_read hfsplus_brec_read
	308	#define hfs_brec_goto hfsplus_brec_goto
	309	#define hfs_part_find hfsplus_part_find
	310
	311	/*
	312	* definitions for ext2 flag ioctls (linux really needs a generic
	313	* interface for this).
	314	*/
	315
	316	/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support
	317	* chattr/lsattr */
36695673 DH	318	#define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS
36695673 DH	319	#define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS
1da177e4 LT	320
1da177e4 LT	321
a051f71c MG	322	/*
	323	* hfs+-specific ioctl for making the filesystem bootable
	324	*/
	325	#define HFSPLUS_IOC_BLESS _IO('h', 0x80)
	326
1da177e4 LT	327	/*
	328	* Functions in any *.c used in other files
	329	*/
	330
	331	/* bitmap.c */
	332	int hfsplus_block_allocate(struct super_block , u32, u32, u32 );
	333	int hfsplus_block_free(struct super_block *, u32, u32);
	334
	335	/* btree.c */
	336	struct hfs_btree hfs_btree_open(struct super_block , u32);
	337	void hfs_btree_close(struct hfs_btree *);
	338	void hfs_btree_write(struct hfs_btree *);
	339	struct hfs_bnode hfs_bmap_alloc(struct hfs_btree );
	340	void hfs_bmap_free(struct hfs_bnode *);
	341
	342	/* bnode.c */
	343	void hfs_bnode_read(struct hfs_bnode , void , int, int);
	344	u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
	345	u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
	346	void hfs_bnode_read_key(struct hfs_bnode , void , int);
	347	void hfs_bnode_write(struct hfs_bnode , void , int, int);
	348	void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
	349	void hfs_bnode_clear(struct hfs_bnode *, int, int);
	350	void hfs_bnode_copy(struct hfs_bnode *, int,
	351	struct hfs_bnode *, int, int);
	352	void hfs_bnode_move(struct hfs_bnode *, int, int, int);
	353	void hfs_bnode_dump(struct hfs_bnode *);
	354	void hfs_bnode_unlink(struct hfs_bnode *);
	355	struct hfs_bnode hfs_bnode_findhash(struct hfs_btree , u32);
	356	struct hfs_bnode hfs_bnode_find(struct hfs_btree , u32);
	357	void hfs_bnode_unhash(struct hfs_bnode *);
	358	void hfs_bnode_free(struct hfs_bnode *);
	359	struct hfs_bnode hfs_bnode_create(struct hfs_btree , u32);
	360	void hfs_bnode_get(struct hfs_bnode *);
	361	void hfs_bnode_put(struct hfs_bnode *);
	362
	363	/* brec.c */
	364	u16 hfs_brec_lenoff(struct hfs_bnode , u16, u16 );
	365	u16 hfs_brec_keylen(struct hfs_bnode *, u16);
	366	int hfs_brec_insert(struct hfs_find_data , void , int);
	367	int hfs_brec_remove(struct hfs_find_data *);
	368
	369	/* bfind.c */
	370	int hfs_find_init(struct hfs_btree , struct hfs_find_data );
	371	void hfs_find_exit(struct hfs_find_data *);
	372	int __hfs_brec_find(struct hfs_bnode , struct hfs_find_data );
	373	int hfs_brec_find(struct hfs_find_data *);
	374	int hfs_brec_read(struct hfs_find_data , void , int);
	375	int hfs_brec_goto(struct hfs_find_data *, int);
	376
	377	/* catalog.c */
2753cc28 AS	378	int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *,
	379	const hfsplus_btree_key *);
	380	int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *,
	381	const hfsplus_btree_key *);
	382	void hfsplus_cat_build_key(struct super_block *sb,
	383	hfsplus_btree_key , u32, struct qstr );
1da177e4 LT	384	int hfsplus_find_cat(struct super_block , u32, struct hfs_find_data );
	385	int hfsplus_create_cat(u32, struct inode , struct qstr , struct inode *);
	386	int hfsplus_delete_cat(u32, struct inode , struct qstr );
	387	int hfsplus_rename_cat(u32, struct inode , struct qstr ,
	388	struct inode , struct qstr );
90e61690	389	void hfsplus_cat_set_perms(struct inode inode, struct hfsplus_perm perms);
1da177e4	390
4b0a8da7 AB	391	/* dir.c */
	392	extern const struct inode_operations hfsplus_dir_inode_operations;
	393	extern const struct file_operations hfsplus_dir_operations;
	394
1da177e4	395	/* extents.c */
2179d372	396	int hfsplus_ext_cmp_key(const hfsplus_btree_key , const hfsplus_btree_key );
dd7f3d54	397	int hfsplus_ext_write_extent(struct inode *);
1da177e4	398	int hfsplus_get_block(struct inode , sector_t, struct buffer_head , int);
2753cc28 AS	399	int hfsplus_free_fork(struct super_block *, u32,
2753cc28 AS	400	struct hfsplus_fork_raw *, int);
1da177e4 LT	401	int hfsplus_file_extend(struct inode *);
	402	void hfsplus_file_truncate(struct inode *);
	403
	404	/* inode.c */
f5e54d6e CH	405	extern const struct address_space_operations hfsplus_aops;
f5e54d6e CH	406	extern const struct address_space_operations hfsplus_btree_aops;
e16404ed	407	extern const struct dentry_operations hfsplus_dentry_operations;
1da177e4 LT	408
	409	void hfsplus_inode_read_fork(struct inode , struct hfsplus_fork_raw );
	410	void hfsplus_inode_write_fork(struct inode , struct hfsplus_fork_raw );
	411	int hfsplus_cat_read_inode(struct inode , struct hfs_find_data );
	412	int hfsplus_cat_write_inode(struct inode *);
c47da798	413	struct inode hfsplus_new_inode(struct super_block , umode_t);
1da177e4	414	void hfsplus_delete_inode(struct inode *);
02c24a82 JB	415	int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
02c24a82 JB	416	int datasync);
1da177e4 LT	417
1da177e4 LT	418	/* ioctl.c */
7cc4bcc6	419	long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
1da177e4 LT	420	int hfsplus_setxattr(struct dentry dentry, const char name,
	421	const void *value, size_t size, int flags);
	422	ssize_t hfsplus_getxattr(struct dentry dentry, const char name,
	423	void *value, size_t size);
	424	ssize_t hfsplus_listxattr(struct dentry dentry, char buffer, size_t size);
	425
	426	/* options.c */
717dd80e	427	int hfsplus_parse_options(char , struct hfsplus_sb_info );
6f80dfe5	428	int hfsplus_parse_options_remount(char input, int force);
717dd80e	429	void hfsplus_fill_defaults(struct hfsplus_sb_info *);
34c80b1d	430	int hfsplus_show_options(struct seq_file , struct dentry );
1da177e4	431
63525391 DH	432	/* super.c */
63525391 DH	433	struct inode hfsplus_iget(struct super_block , unsigned long);
9e6c5829	434	void hfsplus_mark_mdb_dirty(struct super_block *sb);
63525391	435
1da177e4 LT	436	/* tables.c */
	437	extern u16 hfsplus_case_fold_table[];
	438	extern u16 hfsplus_decompose_table[];
	439	extern u16 hfsplus_compose_table[];
	440
	441	/* unicode.c */
2753cc28 AS	442	int hfsplus_strcasecmp(const struct hfsplus_unistr *,
	443	const struct hfsplus_unistr *);
	444	int hfsplus_strcmp(const struct hfsplus_unistr *,
	445	const struct hfsplus_unistr *);
	446	int hfsplus_uni2asc(struct super_block *,
	447	const struct hfsplus_unistr , char , int *);
	448	int hfsplus_asc2uni(struct super_block *,
	449	struct hfsplus_unistr , const char , int);
0c21e3aa LT	450	int hfsplus_hash_dentry(const struct dentry *dentry,
0c21e3aa LT	451	const struct inode inode, struct qstr str);
621e155a NP	452	int hfsplus_compare_dentry(const struct dentry *parent,
	453	const struct inode *pinode,
	454	const struct dentry dentry, const struct inode inode,
	455	unsigned int len, const char str, const struct qstr name);
1da177e4 LT	456
	457	/* wrapper.c */
	458	int hfsplus_read_wrapper(struct super_block *);
1da177e4	459	int hfs_part_find(struct super_block , sector_t , sector_t *);
6596528e SF	460	int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
6596528e SF	461	void buf, void *data, int rw);
1da177e4 LT	462
	463	/* time macros */
	464	#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
	465	#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U))
	466
	467	/* compatibility */
	468	#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
	469	#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
	470	#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
	471
1da177e4	472	#endif