| /* |
| * 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/mutex.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 |
| |
| #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 { |
| struct hfsplus_vh *s_vhdr; |
| 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; |
| uid_t uid; |
| gid_t gid; |
| |
| int part, session; |
| |
| unsigned long flags; |
| }; |
| |
| #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; |
| }; |
| |
| #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 |
| |
| |
| /* |
| * 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 *); |
| 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 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 *, int); |
| 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 vfsmount *); |
| |
| /* super.c */ |
| struct inode *hfsplus_iget(struct super_block *, unsigned long); |
| int hfsplus_sync_fs(struct super_block *sb, int wait); |
| |
| /* 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 block_device *bdev, sector_t sector, |
| 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 |
