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 39 typedef 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 */ 44 struct 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 72 struct page; 73 74 /* An HFS+ BTree node in memory */ 75 struct 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 */ 104 105 struct hfsplus_vh; 106 struct hfs_btree; 107 108 struct 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 #define HFSPLUS_SB_CASEFOLD 0x0010 154 155 156 struct hfsplus_inode_info { 157 struct semaphore extents_lock; 158 u32 clump_blocks, alloc_blocks; 159 sector_t fs_blocks; 160 /* Allocation extents from catalog record or volume header */ 161 hfsplus_extent_rec first_extents; 162 u32 first_blocks; 163 hfsplus_extent_rec cached_extents; 164 u32 cached_start, cached_blocks; 165 atomic_t opencnt; 166 167 struct inode *rsrc_inode; 168 unsigned long flags; 169 170 __be32 create_date; 171 /* Device number in hfsplus_permissions in catalog */ 172 u32 dev; 173 /* BSD system and user file flags */ 174 u8 rootflags; 175 u8 userflags; 176 177 struct list_head open_dir_list; 178 loff_t phys_size; 179 struct inode vfs_inode; 180 }; 181 182 #define HFSPLUS_FLG_RSRC 0x0001 183 #define HFSPLUS_FLG_EXT_DIRTY 0x0002 184 #define HFSPLUS_FLG_EXT_NEW 0x0004 185 186 #define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)) 187 #define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC) 188 189 struct hfs_find_data { 190 /* filled by caller */ 191 hfsplus_btree_key *search_key; 192 hfsplus_btree_key *key; 193 /* filled by find */ 194 struct hfs_btree *tree; 195 struct hfs_bnode *bnode; 196 /* filled by findrec */ 197 int record; 198 int keyoffset, keylength; 199 int entryoffset, entrylength; 200 }; 201 202 struct hfsplus_readdir_data { 203 struct list_head list; 204 struct file *file; 205 struct hfsplus_cat_key key; 206 }; 207 208 #define hfs_btree_open hfsplus_btree_open 209 #define hfs_btree_close hfsplus_btree_close 210 #define hfs_btree_write hfsplus_btree_write 211 #define hfs_bmap_alloc hfsplus_bmap_alloc 212 #define hfs_bmap_free hfsplus_bmap_free 213 #define hfs_bnode_read hfsplus_bnode_read 214 #define hfs_bnode_read_u16 hfsplus_bnode_read_u16 215 #define hfs_bnode_read_u8 hfsplus_bnode_read_u8 216 #define hfs_bnode_read_key hfsplus_bnode_read_key 217 #define hfs_bnode_write hfsplus_bnode_write 218 #define hfs_bnode_write_u16 hfsplus_bnode_write_u16 219 #define hfs_bnode_clear hfsplus_bnode_clear 220 #define hfs_bnode_copy hfsplus_bnode_copy 221 #define hfs_bnode_move hfsplus_bnode_move 222 #define hfs_bnode_dump hfsplus_bnode_dump 223 #define hfs_bnode_unlink hfsplus_bnode_unlink 224 #define hfs_bnode_findhash hfsplus_bnode_findhash 225 #define hfs_bnode_find hfsplus_bnode_find 226 #define hfs_bnode_unhash hfsplus_bnode_unhash 227 #define hfs_bnode_free hfsplus_bnode_free 228 #define hfs_bnode_create hfsplus_bnode_create 229 #define hfs_bnode_get hfsplus_bnode_get 230 #define hfs_bnode_put hfsplus_bnode_put 231 #define hfs_brec_lenoff hfsplus_brec_lenoff 232 #define hfs_brec_keylen hfsplus_brec_keylen 233 #define hfs_brec_insert hfsplus_brec_insert 234 #define hfs_brec_remove hfsplus_brec_remove 235 #define hfs_find_init hfsplus_find_init 236 #define hfs_find_exit hfsplus_find_exit 237 #define __hfs_brec_find __hplusfs_brec_find 238 #define hfs_brec_find hfsplus_brec_find 239 #define hfs_brec_read hfsplus_brec_read 240 #define hfs_brec_goto hfsplus_brec_goto 241 #define hfs_part_find hfsplus_part_find 242 243 /* 244 * definitions for ext2 flag ioctls (linux really needs a generic 245 * interface for this). 246 */ 247 248 /* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support 249 * chattr/lsattr */ 250 #define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS 251 #define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS 252 253 254 /* 255 * Functions in any *.c used in other files 256 */ 257 258 /* bitmap.c */ 259 int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *); 260 int hfsplus_block_free(struct super_block *, u32, u32); 261 262 /* btree.c */ 263 struct hfs_btree *hfs_btree_open(struct super_block *, u32); 264 void hfs_btree_close(struct hfs_btree *); 265 void hfs_btree_write(struct hfs_btree *); 266 struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *); 267 void hfs_bmap_free(struct hfs_bnode *); 268 269 /* bnode.c */ 270 void hfs_bnode_read(struct hfs_bnode *, void *, int, int); 271 u16 hfs_bnode_read_u16(struct hfs_bnode *, int); 272 u8 hfs_bnode_read_u8(struct hfs_bnode *, int); 273 void hfs_bnode_read_key(struct hfs_bnode *, void *, int); 274 void hfs_bnode_write(struct hfs_bnode *, void *, int, int); 275 void hfs_bnode_write_u16(struct hfs_bnode *, int, u16); 276 void hfs_bnode_clear(struct hfs_bnode *, int, int); 277 void hfs_bnode_copy(struct hfs_bnode *, int, 278 struct hfs_bnode *, int, int); 279 void hfs_bnode_move(struct hfs_bnode *, int, int, int); 280 void hfs_bnode_dump(struct hfs_bnode *); 281 void hfs_bnode_unlink(struct hfs_bnode *); 282 struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); 283 struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32); 284 void hfs_bnode_unhash(struct hfs_bnode *); 285 void hfs_bnode_free(struct hfs_bnode *); 286 struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); 287 void hfs_bnode_get(struct hfs_bnode *); 288 void hfs_bnode_put(struct hfs_bnode *); 289 290 /* brec.c */ 291 u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); 292 u16 hfs_brec_keylen(struct hfs_bnode *, u16); 293 int hfs_brec_insert(struct hfs_find_data *, void *, int); 294 int hfs_brec_remove(struct hfs_find_data *); 295 296 /* bfind.c */ 297 int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); 298 void hfs_find_exit(struct hfs_find_data *); 299 int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *); 300 int hfs_brec_find(struct hfs_find_data *); 301 int hfs_brec_read(struct hfs_find_data *, void *, int); 302 int hfs_brec_goto(struct hfs_find_data *, int); 303 304 /* catalog.c */ 305 int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 306 int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 307 void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *); 308 int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *); 309 int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *); 310 int hfsplus_delete_cat(u32, struct inode *, struct qstr *); 311 int hfsplus_rename_cat(u32, struct inode *, struct qstr *, 312 struct inode *, struct qstr *); 313 314 /* dir.c */ 315 extern const struct inode_operations hfsplus_dir_inode_operations; 316 extern const struct file_operations hfsplus_dir_operations; 317 318 /* extents.c */ 319 int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 320 void hfsplus_ext_write_extent(struct inode *); 321 int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); 322 int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int); 323 int hfsplus_file_extend(struct inode *); 324 void hfsplus_file_truncate(struct inode *); 325 326 /* inode.c */ 327 extern const struct address_space_operations hfsplus_aops; 328 extern const struct address_space_operations hfsplus_btree_aops; 329 extern struct dentry_operations hfsplus_dentry_operations; 330 331 void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *); 332 void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *); 333 int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *); 334 int hfsplus_cat_write_inode(struct inode *); 335 struct inode *hfsplus_new_inode(struct super_block *, int); 336 void hfsplus_delete_inode(struct inode *); 337 338 /* ioctl.c */ 339 int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, 340 unsigned long arg); 341 int hfsplus_setxattr(struct dentry *dentry, const char *name, 342 const void *value, size_t size, int flags); 343 ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, 344 void *value, size_t size); 345 ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); 346 347 /* options.c */ 348 int hfsplus_parse_options(char *, struct hfsplus_sb_info *); 349 void hfsplus_fill_defaults(struct hfsplus_sb_info *); 350 int hfsplus_show_options(struct seq_file *, struct vfsmount *); 351 352 /* super.c */ 353 struct inode *hfsplus_iget(struct super_block *, unsigned long); 354 355 /* tables.c */ 356 extern u16 hfsplus_case_fold_table[]; 357 extern u16 hfsplus_decompose_table[]; 358 extern u16 hfsplus_compose_table[]; 359 360 /* unicode.c */ 361 int hfsplus_strcasecmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 362 int hfsplus_strcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 363 int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *); 364 int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int); 365 int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str); 366 int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *s2); 367 368 /* wrapper.c */ 369 int hfsplus_read_wrapper(struct super_block *); 370 371 int hfs_part_find(struct super_block *, sector_t *, sector_t *); 372 373 /* access macros */ 374 /* 375 static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb) 376 { 377 return sb->s_fs_info; 378 } 379 static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode) 380 { 381 return list_entry(inode, struct hfsplus_inode_info, vfs_inode); 382 } 383 */ 384 #define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info) 385 #define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode)) 386 387 #if 1 388 #define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); }) 389 #define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; }) 390 #else 391 #define hfsplus_kmap(p) kmap(p) 392 #define hfsplus_kunmap(p) kunmap(p) 393 #endif 394 395 #define sb_bread512(sb, sec, data) ({ \ 396 struct buffer_head *__bh; \ 397 sector_t __block; \ 398 loff_t __start; \ 399 int __offset; \ 400 \ 401 __start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\ 402 __block = __start >> (sb)->s_blocksize_bits; \ 403 __offset = __start & ((sb)->s_blocksize - 1); \ 404 __bh = sb_bread((sb), __block); \ 405 if (likely(__bh != NULL)) \ 406 data = (void *)(__bh->b_data + __offset);\ 407 else \ 408 data = NULL; \ 409 __bh; \ 410 }) 411 412 /* time macros */ 413 #define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) 414 #define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U)) 415 416 /* compatibility */ 417 #define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) } 418 #define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec) 419 #define hfsp_now2mt() __hfsp_ut2mt(get_seconds()) 420 421 #define kdev_t_to_nr(x) (x) 422 423 #endif 424