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> 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 39typedef int (*btree_keycmp)(const hfsplus_btree_key *, const hfsplus_btree_key *); 40 41#define NODE_HASH_SIZE 256 42 43/* An HFS+ BTree held in memory */ 44struct 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 72struct page; 73 74/* An HFS+ BTree node in memory */ 75struct 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 105struct hfsplus_vh; 106struct hfs_btree; 107 108struct 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; 145 146 struct hlist_head rsrc_inodes; 147}; 148 149#define HFSPLUS_SB_WRITEBACKUP 0x0001 150#define HFSPLUS_SB_NODECOMPOSE 0x0002 151#define HFSPLUS_SB_FORCE 0x0004 152#define HFSPLUS_SB_HFSX 0x0008 153 154 155struct hfsplus_inode_info { 156 struct semaphore extents_lock; 157 u32 clump_blocks, alloc_blocks; 158 sector_t fs_blocks; 159 /* Allocation extents from catalog record or volume header */ 160 hfsplus_extent_rec first_extents; 161 u32 first_blocks; 162 hfsplus_extent_rec cached_extents; 163 u32 cached_start, cached_blocks; 164 atomic_t opencnt; 165 166 struct inode *rsrc_inode; 167 unsigned long flags; 168 169 __be32 create_date; 170 /* Device number in hfsplus_permissions in catalog */ 171 u32 dev; 172 /* BSD system and user file flags */ 173 u8 rootflags; 174 u8 userflags; 175 176 struct list_head open_dir_list; 177 loff_t phys_size; 178 struct inode vfs_inode; 179}; 180 181#define HFSPLUS_FLG_RSRC 0x0001 182#define HFSPLUS_FLG_EXT_DIRTY 0x0002 183#define HFSPLUS_FLG_EXT_NEW 0x0004 184 185#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)) 186#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC) 187 188struct hfs_find_data { 189 /* filled by caller */ 190 hfsplus_btree_key *search_key; 191 hfsplus_btree_key *key; 192 /* filled by find */ 193 struct hfs_btree *tree; 194 struct hfs_bnode *bnode; 195 /* filled by findrec */ 196 int record; 197 int keyoffset, keylength; 198 int entryoffset, entrylength; 199}; 200 201struct hfsplus_readdir_data { 202 struct list_head list; 203 struct file *file; 204 struct hfsplus_cat_key key; 205}; 206 207#define hfs_btree_open hfsplus_btree_open 208#define hfs_btree_close hfsplus_btree_close 209#define hfs_btree_write hfsplus_btree_write 210#define hfs_bmap_alloc hfsplus_bmap_alloc 211#define hfs_bmap_free hfsplus_bmap_free 212#define hfs_bnode_read hfsplus_bnode_read 213#define hfs_bnode_read_u16 hfsplus_bnode_read_u16 214#define hfs_bnode_read_u8 hfsplus_bnode_read_u8 215#define hfs_bnode_read_key hfsplus_bnode_read_key 216#define hfs_bnode_write hfsplus_bnode_write 217#define hfs_bnode_write_u16 hfsplus_bnode_write_u16 218#define hfs_bnode_clear hfsplus_bnode_clear 219#define hfs_bnode_copy hfsplus_bnode_copy 220#define hfs_bnode_move hfsplus_bnode_move 221#define hfs_bnode_dump hfsplus_bnode_dump 222#define hfs_bnode_unlink hfsplus_bnode_unlink 223#define hfs_bnode_findhash hfsplus_bnode_findhash 224#define hfs_bnode_find hfsplus_bnode_find 225#define hfs_bnode_unhash hfsplus_bnode_unhash 226#define hfs_bnode_free hfsplus_bnode_free 227#define hfs_bnode_create hfsplus_bnode_create 228#define hfs_bnode_get hfsplus_bnode_get 229#define hfs_bnode_put hfsplus_bnode_put 230#define hfs_brec_lenoff hfsplus_brec_lenoff 231#define hfs_brec_keylen hfsplus_brec_keylen 232#define hfs_brec_insert hfsplus_brec_insert 233#define hfs_brec_remove hfsplus_brec_remove 234#define hfs_find_init hfsplus_find_init 235#define hfs_find_exit hfsplus_find_exit 236#define __hfs_brec_find __hplusfs_brec_find 237#define hfs_brec_find hfsplus_brec_find 238#define hfs_brec_read hfsplus_brec_read 239#define hfs_brec_goto hfsplus_brec_goto 240#define hfs_part_find hfsplus_part_find 241 242/* 243 * definitions for ext2 flag ioctls (linux really needs a generic 244 * interface for this). 245 */ 246 247/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support 248 * chattr/lsattr */ 249#define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS 250#define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS 251 252 253/* 254 * Functions in any *.c used in other files 255 */ 256 257/* bitmap.c */ 258int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *); 259int hfsplus_block_free(struct super_block *, u32, u32); 260 261/* btree.c */ 262struct hfs_btree *hfs_btree_open(struct super_block *, u32); 263void hfs_btree_close(struct hfs_btree *); 264void hfs_btree_write(struct hfs_btree *); 265struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *); 266void hfs_bmap_free(struct hfs_bnode *); 267 268/* bnode.c */ 269void hfs_bnode_read(struct hfs_bnode *, void *, int, int); 270u16 hfs_bnode_read_u16(struct hfs_bnode *, int); 271u8 hfs_bnode_read_u8(struct hfs_bnode *, int); 272void hfs_bnode_read_key(struct hfs_bnode *, void *, int); 273void hfs_bnode_write(struct hfs_bnode *, void *, int, int); 274void hfs_bnode_write_u16(struct hfs_bnode *, int, u16); 275void hfs_bnode_clear(struct hfs_bnode *, int, int); 276void hfs_bnode_copy(struct hfs_bnode *, int, 277 struct hfs_bnode *, int, int); 278void hfs_bnode_move(struct hfs_bnode *, int, int, int); 279void hfs_bnode_dump(struct hfs_bnode *); 280void hfs_bnode_unlink(struct hfs_bnode *); 281struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); 282struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32); 283void hfs_bnode_unhash(struct hfs_bnode *); 284void hfs_bnode_free(struct hfs_bnode *); 285struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); 286void hfs_bnode_get(struct hfs_bnode *); 287void hfs_bnode_put(struct hfs_bnode *); 288 289/* brec.c */ 290u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); 291u16 hfs_brec_keylen(struct hfs_bnode *, u16); 292int hfs_brec_insert(struct hfs_find_data *, void *, int); 293int hfs_brec_remove(struct hfs_find_data *); 294 295/* bfind.c */ 296int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); 297void hfs_find_exit(struct hfs_find_data *); 298int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *); 299int hfs_brec_find(struct hfs_find_data *); 300int hfs_brec_read(struct hfs_find_data *, void *, int); 301int hfs_brec_goto(struct hfs_find_data *, int); 302 303/* catalog.c */ 304int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 305int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 306void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *); 307int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *); 308int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *); 309int hfsplus_delete_cat(u32, struct inode *, struct qstr *); 310int hfsplus_rename_cat(u32, struct inode *, struct qstr *, 311 struct inode *, struct qstr *); 312 313/* extents.c */ 314int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 315void hfsplus_ext_write_extent(struct inode *); 316int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); 317int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int); 318int hfsplus_file_extend(struct inode *); 319void hfsplus_file_truncate(struct inode *); 320 321/* inode.c */ 322extern const struct address_space_operations hfsplus_aops; 323extern const struct address_space_operations hfsplus_btree_aops; 324 325void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *); 326void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *); 327int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *); 328int hfsplus_cat_write_inode(struct inode *); 329struct inode *hfsplus_new_inode(struct super_block *, int); 330void hfsplus_delete_inode(struct inode *); 331 332/* ioctl.c */ 333int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, 334 unsigned long arg); 335int hfsplus_setxattr(struct dentry *dentry, const char *name, 336 const void *value, size_t size, int flags); 337ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, 338 void *value, size_t size); 339ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); 340 341/* options.c */ 342int hfsplus_parse_options(char *, struct hfsplus_sb_info *); 343void hfsplus_fill_defaults(struct hfsplus_sb_info *); 344int hfsplus_show_options(struct seq_file *, struct vfsmount *); 345 346/* tables.c */ 347extern u16 hfsplus_case_fold_table[]; 348extern u16 hfsplus_decompose_table[]; 349extern u16 hfsplus_compose_table[]; 350 351/* unicode.c */ 352int hfsplus_strcasecmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 353int hfsplus_strcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 354int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *); 355int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int); 356 357/* wrapper.c */ 358int hfsplus_read_wrapper(struct super_block *); 359 360int hfs_part_find(struct super_block *, sector_t *, sector_t *); 361 362/* access macros */ 363/* 364static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb) 365{ 366 return sb->s_fs_info; 367} 368static 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#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); }) 377#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; }) 378 379#define sb_bread512(sb, sec, data) ({ \ 380 struct buffer_head *__bh; \ 381 sector_t __block; \ 382 loff_t __start; \ 383 int __offset; \ 384 \ 385 __start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\ 386 __block = __start >> (sb)->s_blocksize_bits; \ 387 __offset = __start & ((sb)->s_blocksize - 1); \ 388 __bh = sb_bread((sb), __block); \ 389 if (likely(__bh != NULL)) \ 390 data = (void *)(__bh->b_data + __offset);\ 391 else \ 392 data = NULL; \ 393 __bh; \ 394}) 395 396/* time macros */ 397#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) 398#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U)) 399 400/* compatibility */ 401#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) } 402#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec) 403#define hfsp_now2mt() __hfsp_ut2mt(get_seconds()) 404 405#define kdev_t_to_nr(x) (x) 406 407#endif 408