/* * linux/include/linux/hfsplus_fs.h * * Copyright (C) 1999 * Brad Boyer (flar@pants.nu) * (C) 2003 Ardis Technologies * */ #ifndef _LINUX_HFSPLUS_FS_H #define _LINUX_HFSPLUS_FS_H #include #include #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_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD) //#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD) //#define DBG_MASK (DBG_BNODE_REFS|DBG_INODE|DBG_BNODE_MOD) #define DBG_MASK (0) #define dprint(flg, fmt, args...) \ if (flg & DBG_MASK) printk(fmt , ## args) /* Runtime config options */ #define HFSPLUS_CASE_ASIS 0 #define HFSPLUS_CASE_LOWER 1 #define HFSPLUS_FORK_RAW 0 #define HFSPLUS_FORK_CAP 1 #define HFSPLUS_FORK_DOUBLE 2 #define HFSPLUS_FORK_NETATALK 3 #define HFSPLUS_NAMES_TRIVIAL 0 #define HFSPLUS_NAMES_CAP 1 #define HFSPLUS_NAMES_NETATALK 2 #define HFSPLUS_NAMES_7BIT 3 #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 */ typedef struct hfsplus_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 hfsplus_bnode *node_hash[NODE_HASH_SIZE]; int node_hash_cnt; } hfsplus_btree; struct page; /* An HFS+ BTree node in memory */ typedef struct hfsplus_bnode { struct hfsplus_btree *tree; u32 prev; u32 this; u32 next; u32 parent; u16 num_recs; u8 kind; u8 height; struct hfsplus_bnode *next_hash; unsigned long flags; wait_queue_head_t lock_wq; atomic_t refcnt; unsigned int page_offset; struct page *page[0]; } hfsplus_bnode; #define HFSPLUS_BNODE_LOCK 0 #define HFSPLUS_BNODE_ERROR 1 #define HFSPLUS_BNODE_NEW 2 #define HFSPLUS_BNODE_DIRTY 3 #define HFSPLUS_BNODE_DELETED 4 /* * HFS+ superblock info (built from Volume Header on disk) */ struct hfsplus_vh; struct hfsplus_btree; struct hfsplus_sb_info { struct buffer_head *s_vhbh; struct hfsplus_vh *s_vhdr; struct hfsplus_btree *ext_tree; struct hfsplus_btree *cat_tree; struct hfsplus_btree *attr_tree; struct inode *alloc_file; struct inode *hidden_dir; /* Runtime variables */ u32 blockoffset; u32 sect_count; //int a2b_shift; /* Stuff in host order from Vol Header */ u32 total_blocks; u32 free_blocks; u32 next_alloc; u32 next_cnid; u32 file_count; u32 folder_count; /* Config options */ u32 creator; u32 type; int charcase; int fork; int namemap; umode_t umask; uid_t uid; gid_t gid; unsigned long flags; atomic_t inode_cnt; u32 last_inode_cnt; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) struct list_head rsrc_inodes; #else struct hlist_head rsrc_inodes; #endif }; #define HFSPLUS_SB_WRITEBACKUP 0x0001 struct hfsplus_inode_info { /* Device number in hfsplus_permissions in catalog */ u32 dev; /* Allocation extents from catlog record or volume header */ hfsplus_extent_rec extents; u32 total_blocks, extent_blocks, alloc_blocks; atomic_t opencnt; struct inode *rsrc_inode; unsigned long flags; struct list_head open_dir_list; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) unsigned long mmu_private; #else loff_t mmu_private; struct inode vfs_inode; #endif }; #define HFSPLUS_FLG_RSRC 0x0001 #define HFSPLUS_FLG_DIRTYMODE 0x0002 #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 hfsplus_find_data { /* filled by caller */ hfsplus_btree_key *search_key; hfsplus_btree_key *key; /* filled by find */ hfsplus_btree *tree; hfsplus_bnode *bnode; /* filled by findrec */ int record, exact; int keyoffset, keylength; int entryoffset, entrylength; }; struct hfsplus_readdir_data { struct list_head list; struct file *file; hfsplus_cat_key key; }; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) typedef long sector_t; #endif /* * Functions in any *.c used in other files */ /* bfind.c */ void hfsplus_find_rec(hfsplus_bnode *, struct hfsplus_find_data *); int hfsplus_btree_find(struct hfsplus_find_data *); int hfsplus_btree_find_entry(struct hfsplus_find_data *, void *, int); int hfsplus_btree_move(struct hfsplus_find_data *, int); int hfsplus_find_init(hfsplus_btree *, struct hfsplus_find_data *); void hfsplus_find_exit(struct hfsplus_find_data *); /* bnode.c */ struct buffer_head *hfsplus_getblk(struct inode *, unsigned long); hfsplus_bnode *__hfsplus_find_bnode(hfsplus_btree *, u32); void __hfsplus_bnode_remove(hfsplus_bnode *); hfsplus_bnode *hfsplus_create_bnode(hfsplus_btree *, u32); hfsplus_bnode *hfsplus_find_bnode(hfsplus_btree *, u32); void hfsplus_get_bnode(hfsplus_bnode *); void hfsplus_put_bnode(hfsplus_bnode *); void hfsplus_bnode_free(hfsplus_bnode *); void hfsplus_bnode_readbytes(hfsplus_bnode *, void *, unsigned long, unsigned long); u16 hfsplus_bnode_read_u16(hfsplus_bnode *, unsigned long); void hfsplus_bnode_writebytes(hfsplus_bnode *, void *, unsigned long, unsigned long); void hfsplus_bnode_write_u16(hfsplus_bnode *, unsigned long, u16); void hfsplus_bnode_copybytes(hfsplus_bnode *, unsigned long, hfsplus_bnode *, unsigned long, unsigned long); void hfsplus_bnode_movebytes(hfsplus_bnode *, unsigned long, unsigned long, unsigned long); int hfsplus_bnode_insert_rec(struct hfsplus_find_data *, void *, int); int hfsplus_bnode_remove_rec(struct hfsplus_find_data *); /* brec.c */ u16 hfsplus_brec_lenoff(hfsplus_bnode *, u16, u16 *); u16 hfsplus_brec_keylen(hfsplus_bnode *, u16); /* btree.c */ hfsplus_btree *hfsplus_open_btree(struct super_block *, u32); void hfsplus_close_btree(struct hfsplus_btree *); void hfsplus_write_btree(struct hfsplus_btree *); hfsplus_bnode *hfsplus_btree_alloc_node(hfsplus_btree *); void hfsplus_btree_remove_node(hfsplus_bnode *); void hfsplus_btree_free_node(hfsplus_bnode *); /* catalog.c */ int hfsplus_cmp_cat_key(hfsplus_btree_key *, hfsplus_btree_key *); void hfsplus_fill_cat_key(hfsplus_btree_key *, u32, struct qstr *); int hfsplus_find_cat(struct super_block *, unsigned long, struct hfsplus_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_cmp_ext_key(hfsplus_btree_key *, hfsplus_btree_key *); void hfsplus_fill_ext_key(hfsplus_btree_key *, u32, u32, u8); int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); int hfsplus_free_fork(struct super_block *, u32, hfsplus_fork_raw *, int); int hfsplus_extend_file(struct inode *); void hfsplus_truncate(struct inode *); /* inode.c */ void hfsplus_inode_read_fork(struct inode *, hfsplus_fork_raw *); void hfsplus_inode_write_fork(struct inode *, hfsplus_fork_raw *); int hfsplus_cat_read_inode(struct inode *, struct hfsplus_find_data *); void hfsplus_cat_write_inode(struct inode *); struct inode *hfsplus_new_inode(struct super_block *, int); void hfsplus_delete_inode(struct inode *); extern struct address_space_operations hfsplus_btree_aops; /* options.c */ int parse_options(char *, struct hfsplus_sb_info *); void fill_defaults(struct hfsplus_sb_info *); void fill_current(struct hfsplus_sb_info *, struct hfsplus_sb_info *); /* tables.c */ extern u16 case_fold_table[]; /* unicode.c */ int hfsplus_unistrcmp(const hfsplus_unistr *, const hfsplus_unistr *); int hfsplus_uni2asc(const hfsplus_unistr *, char *, int *); int hfsplus_asc2uni(hfsplus_unistr *, const char *, int); /* wrapper.c */ int hfsplus_read_wrapper(struct super_block *); /* access macros */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) #define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)&(super)->u) #define HFSPLUS_I(inode) (*(struct hfsplus_inode_info *)&(inode)->u) #else /* 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)) #endif #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 /* time macros */ #define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) #define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U)) /* compatibility */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) #define PageUptodate(page) Page_Uptodate(page) #define wait_on_page_locked(page) wait_on_page(page) #define get_seconds() CURRENT_TIME #define page_symlink(i,n,l) block_symlink(i,n,l) #define map_bh(bh, sb, block) ({ \ bh->b_dev = kdev_t_to_nr(sb->s_dev); \ bh->b_blocknr = block; \ bh->b_state |= (1UL << BH_Mapped); \ }) #define set_buffer_new(bh) (bh->b_state |= (1UL << BH_New)) #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,21) #define new_inode(sb) ({ \ struct inode *inode = get_empty_inode(); \ if (inode) { \ inode->i_sb = sb; \ inode->i_dev = sb->s_dev; \ inode->i_blkbits = sb->s_blocksize_bits; \ } \ inode; \ }) #endif #define hfsp_mt2ut(t) __hfsp_mt2ut(t) #define hfsp_ut2mt(t) __hfsp_ut2mt(t) #define hfsp_now2mt() __hfsp_ut2mt(CURRENT_TIME) #else #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 #endif