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_jbd.h" 16#include "hfsplus_raw.h" 17 18#define DBG_BNODE_REFS 0x00000001 19#define DBG_BNODE_MOD 0x00000002 20#define DBG_CAT_MOD 0x00000004 21#define DBG_INODE 0x00000008 22#define DBG_SUPER 0x00000010 23#define DBG_EXTENT 0x00000020 24#define DBG_BITMAP 0x00000040 25#define DBG_JOURNAL 0x00000080 26#define DBG_JREPLAY 0x00000100 27#define DBG_JTRANS 0x00000200 28#define DBG_JCOMMIT 0x00000400 29#define DBG_JCHKPT 0x00000800 30 31//#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD) 32//#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE) 33//#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT) 34//#define DBG_MASK (0) 35#define DBG_MASK (DBG_JOURNAL|DBG_JREPLAY) 36 37#define HFSPLUS_JOURNAL_PRESENT 1 38#define HFSPLUS_JOURNAL_CONSISTENT 0 39#define HFSPLUS_JOURNAL_INCONSISTENT 1 40#define HFSPLUS_JOURNAL_UIBYTE 0x5A /* Unimportant byte value */ 41#define HFSPLUS_JOURNAL_SUCCESS 0 42#define HFSPLUS_JOURNAL_FAIL 1 43#define HFSPLUS_JOURNAL_SWAP 1 44 45#define dprint(flg, fmt, args...) \ 46 if (flg & DBG_MASK) printk(fmt , ## args) 47 48/* Runtime config options */ 49#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */ 50 51#define HFSPLUS_TYPE_DATA 0x00 52#define HFSPLUS_TYPE_RSRC 0xFF 53 54typedef int (*btree_keycmp)(const hfsplus_btree_key *, const hfsplus_btree_key *); 55 56#define NODE_HASH_SIZE 256 57 58/* An HFS+ BTree held in memory */ 59struct hfs_btree { 60 struct super_block *sb; 61 struct inode *inode; 62 btree_keycmp keycmp; 63 64 u32 cnid; 65 u32 root; 66 u32 leaf_count; 67 u32 leaf_head; 68 u32 leaf_tail; 69 u32 node_count; 70 u32 free_nodes; 71 u32 attributes; 72 73 unsigned int node_size; 74 unsigned int node_size_shift; 75 unsigned int max_key_len; 76 unsigned int depth; 77 78 //unsigned int map1_size, map_size; 79 struct semaphore tree_lock; 80 81 unsigned int pages_per_bnode; 82 spinlock_t hash_lock; 83 struct hfs_bnode *node_hash[NODE_HASH_SIZE]; 84 int node_hash_cnt; 85}; 86 87struct page; 88 89/* An HFS+ BTree node in memory */ 90struct hfs_bnode { 91 struct hfs_btree *tree; 92 93 u32 prev; 94 u32 this; 95 u32 next; 96 u32 parent; 97 98 u16 num_recs; 99 u8 type; 100 u8 height; 101 102 struct hfs_bnode *next_hash; 103 unsigned long flags; 104 wait_queue_head_t lock_wq; 105 atomic_t refcnt; 106 unsigned int page_offset; 107 struct page *page[0]; 108}; 109 110#define HFS_BNODE_LOCK 0 111#define HFS_BNODE_ERROR 1 112#define HFS_BNODE_NEW 2 113#define HFS_BNODE_DIRTY 3 114#define HFS_BNODE_DELETED 4 115 116/* An HFS+ Journal held in memory */ 117struct hfsplus_journal { 118 struct semaphore jnl_lock; 119 u32 journaled; 120 u32 flags; 121 122 /* Journal info block specific */ 123 struct buffer_head *jib_bh; 124 struct hfsplus_journal_info_block *jibhdr; 125 u64 jib_offset; 126 127 /* Journal header specific */ 128 struct buffer_head *jh_bh; 129 u32 jh_bh_size; 130 u64 jh_offset; 131 struct hfsplus_journal_header *jhdr; 132 133 /* block number of meta-data */ 134 u32 ext_block; 135 u32 alloc_block; 136 u32 catalog_block; 137 u32 attr_block; 138 139 /* Pointer of JBD */ 140 struct hfsplus_jbd_s *s_journal; 141 142 /* Maximum number of blocks allowed in a single transaction */ 143 u16 journal_maxblock; 144 145 struct super_block *sbp; 146}; 147 148/* 149 * HFS+ superblock info (built from Volume Header on disk) 150 */ 151 152struct hfsplus_vh; 153struct hfs_btree; 154 155struct hfsplus_sb_info { 156 struct buffer_head *s_vhbh; 157 struct hfsplus_vh *s_vhdr; 158 struct hfs_btree *ext_tree; 159 struct hfs_btree *cat_tree; 160 struct hfs_btree *attr_tree; 161 struct inode *alloc_file; 162 struct inode *hidden_dir; 163 struct nls_table *nls; 164 165 /* Runtime variables */ 166 u32 blockoffset; 167 u32 sect_count; 168 int fs_shift; 169 170 /* Stuff in host order from Vol Header */ 171 struct hfsplus_journal jnl; 172 u32 alloc_blksz; 173 int alloc_blksz_shift; 174 u32 total_blocks; 175 u32 free_blocks; 176 u32 next_alloc; 177 u32 next_cnid; 178 u32 file_count; 179 u32 folder_count; 180 u32 data_clump_blocks, rsrc_clump_blocks; 181 182 /* Config options */ 183 u32 creator; 184 u32 type; 185 186 umode_t umask; 187 uid_t uid; 188 gid_t gid; 189 190 int part, session; 191 192 unsigned long flags; 193 194 struct hlist_head rsrc_inodes; 195}; 196 197#define HFSPLUS_SB_WRITEBACKUP 0x0001 198#define HFSPLUS_SB_NODECOMPOSE 0x0002 199#define HFSPLUS_SB_FORCE 0x0004 200#define HFSPLUS_SB_HFSX 0x0008 201 202 203struct hfsplus_inode_info { 204 struct semaphore extents_lock; 205 u32 clump_blocks, alloc_blocks; 206 sector_t fs_blocks; 207 /* Allocation extents from catalog record or volume header */ 208 hfsplus_extent_rec first_extents; 209 u32 first_blocks; 210 hfsplus_extent_rec cached_extents; 211 u32 cached_start, cached_blocks; 212 atomic_t opencnt; 213 214 struct inode *rsrc_inode; 215 unsigned long flags; 216 217 __be32 create_date; 218 /* Device number in hfsplus_permissions in catalog */ 219 u32 dev; 220 /* BSD system and user file flags */ 221 u8 rootflags; 222 u8 userflags; 223 224 struct list_head open_dir_list; 225 loff_t phys_size; 226 struct inode vfs_inode; 227}; 228 229#define HFSPLUS_FLG_RSRC 0x0001 230#define HFSPLUS_FLG_EXT_DIRTY 0x0002 231#define HFSPLUS_FLG_EXT_NEW 0x0004 232 233#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)) 234#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC) 235 236struct hfs_find_data { 237 /* filled by caller */ 238 hfsplus_btree_key *search_key; 239 hfsplus_btree_key *key; 240 /* filled by find */ 241 struct hfs_btree *tree; 242 struct hfs_bnode *bnode; 243 /* filled by findrec */ 244 int record; 245 int keyoffset, keylength; 246 int entryoffset, entrylength; 247}; 248 249struct hfsplus_readdir_data { 250 struct list_head list; 251 struct file *file; 252 struct hfsplus_cat_key key; 253}; 254 255#define hfs_btree_open hfsplus_btree_open 256#define hfs_btree_close hfsplus_btree_close 257#define hfs_btree_write hfsplus_btree_write 258#define hfs_bmap_alloc hfsplus_bmap_alloc 259#define hfs_bmap_free hfsplus_bmap_free 260#define hfs_bnode_read hfsplus_bnode_read 261#define hfs_bnode_read_u16 hfsplus_bnode_read_u16 262#define hfs_bnode_read_u8 hfsplus_bnode_read_u8 263#define hfs_bnode_read_key hfsplus_bnode_read_key 264#define hfs_bnode_write hfsplus_bnode_write 265#define hfs_bnode_write_u16 hfsplus_bnode_write_u16 266#define hfs_bnode_clear hfsplus_bnode_clear 267#define hfs_bnode_copy hfsplus_bnode_copy 268#define hfs_bnode_move hfsplus_bnode_move 269#define hfs_bnode_dump hfsplus_bnode_dump 270#define hfs_bnode_unlink hfsplus_bnode_unlink 271#define hfs_bnode_findhash hfsplus_bnode_findhash 272#define hfs_bnode_find hfsplus_bnode_find 273#define hfs_bnode_unhash hfsplus_bnode_unhash 274#define hfs_bnode_free hfsplus_bnode_free 275#define hfs_bnode_create hfsplus_bnode_create 276#define hfs_bnode_get hfsplus_bnode_get 277#define hfs_bnode_put hfsplus_bnode_put 278#define hfs_brec_lenoff hfsplus_brec_lenoff 279#define hfs_brec_keylen hfsplus_brec_keylen 280#define hfs_brec_insert hfsplus_brec_insert 281#define hfs_brec_remove hfsplus_brec_remove 282#define hfs_find_init hfsplus_find_init 283#define hfs_find_exit hfsplus_find_exit 284#define __hfs_brec_find __hplusfs_brec_find 285#define hfs_brec_find hfsplus_brec_find 286#define hfs_brec_read hfsplus_brec_read 287#define hfs_brec_goto hfsplus_brec_goto 288#define hfs_part_find hfsplus_part_find 289 290/* 291 * definitions for ext2 flag ioctls (linux really needs a generic 292 * interface for this). 293 */ 294 295/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support 296 * chattr/lsattr */ 297#define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS 298#define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS 299 300 301/* 302 * Functions in any *.c used in other files 303 */ 304 305/* bitmap.c */ 306int hfsplus_block_allocate(hfsplus_handle_t *, struct super_block *, u32, u32, u32 *); 307int hfsplus_block_free(hfsplus_handle_t *, struct super_block *, u32, u32); 308 309/* btree.c */ 310struct hfs_btree *hfs_btree_open(struct super_block *, u32); 311void hfs_btree_close(struct hfs_btree *); 312void hfs_btree_write(hfsplus_handle_t *, struct hfs_btree *); 313struct hfs_bnode *hfs_bmap_alloc(hfsplus_handle_t *, struct hfs_btree *); 314void hfs_bmap_free(hfsplus_handle_t *, struct hfs_bnode *); 315 316/* bnode.c */ 317void hfs_bnode_read(struct hfs_bnode *, void *, int, int); 318u16 hfs_bnode_read_u16(struct hfs_bnode *, int); 319u8 hfs_bnode_read_u8(struct hfs_bnode *, int); 320void hfs_bnode_read_key(struct hfs_bnode *, void *, int); 321void hfs_bnode_write(hfsplus_handle_t *, struct hfs_bnode *, void *, int, int); 322void hfs_bnode_write_u16(hfsplus_handle_t *, struct hfs_bnode *, int, u16); 323void hfs_bnode_clear(hfsplus_handle_t *, struct hfs_bnode *, int, int); 324void hfs_bnode_copy(hfsplus_handle_t *, struct hfs_bnode *, int, 325 struct hfs_bnode *, int, int); 326void hfs_bnode_move(hfsplus_handle_t *, struct hfs_bnode *, int, int, int); 327void hfs_bnode_dump(struct hfs_bnode *); 328void hfs_bnode_unlink(hfsplus_handle_t *, struct hfs_bnode *); 329struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); 330struct hfs_bnode *hfs_bnode_find(hfsplus_handle_t *, struct hfs_btree *, u32); 331void hfs_bnode_unhash(struct hfs_bnode *); 332void hfs_bnode_free(struct hfs_bnode *); 333struct hfs_bnode *hfs_bnode_create(hfsplus_handle_t *, struct hfs_btree *, u32); 334void hfs_bnode_get(struct hfs_bnode *); 335void hfs_bnode_put(hfsplus_handle_t *, struct hfs_bnode *); 336 337/* brec.c */ 338u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); 339u16 hfs_brec_keylen(struct hfs_bnode *, u16); 340int hfs_brec_insert(hfsplus_handle_t *, struct hfs_find_data *, void *, int); 341int hfs_brec_remove(hfsplus_handle_t *, struct hfs_find_data *); 342 343/* bfind.c */ 344int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); 345void hfs_find_exit(hfsplus_handle_t *, struct hfs_find_data *); 346int hfsplus_journalled_find_init(struct hfs_btree *, struct hfs_find_data *); 347void hfsplus_journalled_find_exit(hfsplus_handle_t *, struct hfs_find_data *); 348int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *); 349int hfs_brec_find(hfsplus_handle_t *, struct hfs_find_data *); 350int hfs_brec_read(hfsplus_handle_t *, struct hfs_find_data *, void *, int); 351int hfs_brec_goto(hfsplus_handle_t *, struct hfs_find_data *, int); 352 353/* catalog.c */ 354int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 355int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 356void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *); 357int hfsplus_find_cat(hfsplus_handle_t *, struct super_block *, u32, struct hfs_find_data *); 358int hfsplus_create_cat(hfsplus_handle_t *, u32, struct inode *, struct qstr *, struct inode *); 359int hfsplus_delete_cat(hfsplus_handle_t *, u32, struct inode *, struct qstr *); 360int hfsplus_rename_cat(hfsplus_handle_t *, u32, struct inode *, struct qstr *, 361 struct inode *, struct qstr *); 362 363/* extents.c */ 364int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 365void hfsplus_ext_write_extent(hfsplus_handle_t *, struct inode *); 366int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); 367int hfsplus_free_fork(hfsplus_handle_t *handle, struct super_block *, u32, struct hfsplus_fork_raw *, int); 368int hfsplus_file_extend(hfsplus_handle_t *, struct inode *); 369void hfsplus_file_truncate(struct inode *); 370 371/* inode.c */ 372extern const struct address_space_operations hfsplus_aops; 373extern const struct address_space_operations hfsplus_btree_aops; 374extern struct address_space_operations hfsplus_journalled_aops; 375extern struct address_space_operations hfsplus_journalled_btree_aops; 376 377void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *); 378void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *); 379int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *); 380int hfsplus_cat_write_inode(hfsplus_handle_t *, struct inode *); 381struct inode *hfsplus_new_inode(hfsplus_handle_t *, struct super_block *, int); 382void hfsplus_delete_inode(hfsplus_handle_t *, struct inode *); 383int hfsplus_do_journal_get_write_access(hfsplus_handle_t *, struct buffer_head *); 384int hfsplus_commit_write_fn(hfsplus_handle_t *, struct buffer_head *); 385int hfsplus_walk_page_buffers(hfsplus_handle_t *, struct buffer_head *, unsigned , 386 unsigned , int *, int (*fn)(hfsplus_handle_t *, struct buffer_head *)); 387 388/* ioctl.c */ 389int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, 390 unsigned long arg); 391int hfsplus_setxattr(struct dentry *dentry, const char *name, 392 const void *value, size_t size, int flags); 393ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, 394 void *value, size_t size); 395ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); 396 397/* options.c */ 398int hfsplus_parse_options(char *, struct hfsplus_sb_info *); 399void hfsplus_fill_defaults(struct hfsplus_sb_info *); 400int hfsplus_show_options(struct seq_file *, struct vfsmount *); 401 402/* tables.c */ 403extern u16 hfsplus_case_fold_table[]; 404extern u16 hfsplus_decompose_table[]; 405extern u16 hfsplus_compose_table[]; 406 407/* unicode.c */ 408int hfsplus_strcasecmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 409int hfsplus_strcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 410int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *); 411int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int); 412 413/* wrapper.c */ 414int hfsplus_read_wrapper(struct super_block *); 415 416int hfs_part_find(struct super_block *, sector_t *, sector_t *); 417 418/* journal.c */ 419void hfsplus_journalled_init(struct super_block *, struct hfsplus_vh *); 420void hfsplus_journalled_deinit(struct super_block *); 421int hfsplus_journalled_create(struct super_block *); 422int hfsplus_journalled_check(struct super_block *); 423void print_volume_header(struct super_block *); 424void swap_block_list_header(struct hfsplus_blhdr *); 425hfsplus_jbd_t * hfsplus_get_dev_journal(struct super_block *); 426int hfsplus_journalled_mark_inode_dirty(const char *, hfsplus_handle_t *, struct inode *); 427int hfsplus_journalled_set_page_dirty(hfsplus_handle_t *, struct page *); 428int hfsplus_journal_start(const char *, struct super_block *sb, hfsplus_handle_t *hfsplus_handle); 429int hfsplus_journal_stop(hfsplus_handle_t *); 430int hfsplus_journal_get_write_access(const char *, hfsplus_handle_t *, struct buffer_head *); 431int hfsplus_journal_dirty_metadata(const char *, struct buffer_head *, hfsplus_handle_t *); 432int hfsplus_force_commit(struct super_block *); 433void hfsplus_jhdr_checksum_calculate(hfsplus_jbd_t *); 434void hfsplus_journal_header_start_update(hfsplus_jbd_t *, unsigned long); 435void hfsplus_journal_header_end_update(hfsplus_jbd_t *, struct hfsplus_journal_header *); 436void hfsplus_journal_mark_journal_empty(hfsplus_jbd_t *); 437void hfsplus_test_block_list_header(const char *, struct hfsplus_journal_header *, struct hfsplus_journal *); 438 439/* access macros */ 440/* 441static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb) 442{ 443 return sb->s_fs_info; 444} 445static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode) 446{ 447 return list_entry(inode, struct hfsplus_inode_info, vfs_inode); 448} 449*/ 450#define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info) 451#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode)) 452 453#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); }) 454#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; }) 455 456#define sb_bread512(sb, sec, data) ({ \ 457 struct buffer_head *__bh; \ 458 sector_t __block; \ 459 loff_t __start; \ 460 int __offset; \ 461 \ 462 __start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\ 463 __block = __start >> (sb)->s_blocksize_bits; \ 464 __offset = __start & ((sb)->s_blocksize - 1); \ 465 __bh = sb_bread((sb), __block); \ 466 if (likely(__bh != NULL)) \ 467 data = (void *)(__bh->b_data + __offset);\ 468 else \ 469 data = NULL; \ 470 __bh; \ 471}) 472 473/* time macros */ 474#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) 475#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U)) 476 477/* compatibility */ 478#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) } 479#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec) 480#define hfsp_now2mt() __hfsp_ut2mt(get_seconds()) 481 482#define kdev_t_to_nr(x) (x) 483 484#endif 485