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/mutex.h> 15#include <linux/buffer_head.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 26//#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD) 27//#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE) 28//#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT) 29#define DBG_MASK (0) 30 31#define dprint(flg, fmt, args...) \ 32 if (flg & DBG_MASK) printk(fmt , ## args) 33 34/* Runtime config options */ 35#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */ 36 37#define HFSPLUS_TYPE_DATA 0x00 38#define HFSPLUS_TYPE_RSRC 0xFF 39 40typedef int (*btree_keycmp)(const hfsplus_btree_key *, const hfsplus_btree_key *); 41 42#define NODE_HASH_SIZE 256 43 44/* An HFS+ BTree held in memory */ 45struct hfs_btree { 46 struct super_block *sb; 47 struct inode *inode; 48 btree_keycmp keycmp; 49 50 u32 cnid; 51 u32 root; 52 u32 leaf_count; 53 u32 leaf_head; 54 u32 leaf_tail; 55 u32 node_count; 56 u32 free_nodes; 57 u32 attributes; 58 59 unsigned int node_size; 60 unsigned int node_size_shift; 61 unsigned int max_key_len; 62 unsigned int depth; 63 64 //unsigned int map1_size, map_size; 65 struct semaphore tree_lock; 66 67 unsigned int pages_per_bnode; 68 spinlock_t hash_lock; 69 struct hfs_bnode *node_hash[NODE_HASH_SIZE]; 70 int node_hash_cnt; 71}; 72 73struct page; 74 75/* An HFS+ BTree node in memory */ 76struct hfs_bnode { 77 struct hfs_btree *tree; 78 79 u32 prev; 80 u32 this; 81 u32 next; 82 u32 parent; 83 84 u16 num_recs; 85 u8 type; 86 u8 height; 87 88 struct hfs_bnode *next_hash; 89 unsigned long flags; 90 wait_queue_head_t lock_wq; 91 atomic_t refcnt; 92 unsigned int page_offset; 93 struct page *page[0]; 94}; 95 96#define HFS_BNODE_LOCK 0 97#define HFS_BNODE_ERROR 1 98#define HFS_BNODE_NEW 2 99#define HFS_BNODE_DIRTY 3 100#define HFS_BNODE_DELETED 4 101 102/* 103 * HFS+ superblock info (built from Volume Header on disk) 104 */ 105 106struct hfsplus_vh; 107struct hfs_btree; 108 109struct hfsplus_sb_info { 110 struct buffer_head *s_vhbh; 111 struct hfsplus_vh *s_vhdr; 112 struct hfs_btree *ext_tree; 113 struct hfs_btree *cat_tree; 114 struct hfs_btree *attr_tree; 115 struct inode *alloc_file; 116 struct inode *hidden_dir; 117 struct nls_table *nls; 118 119 /* Runtime variables */ 120 u32 blockoffset; 121 u32 sect_count; 122 int fs_shift; 123 124 /* Stuff in host order from Vol Header */ 125 u32 alloc_blksz; 126 int alloc_blksz_shift; 127 u32 total_blocks; 128 u32 free_blocks; 129 u32 next_alloc; 130 u32 next_cnid; 131 u32 file_count; 132 u32 folder_count; 133 u32 data_clump_blocks, rsrc_clump_blocks; 134 135 /* Config options */ 136 u32 creator; 137 u32 type; 138 139 umode_t umask; 140 uid_t uid; 141 gid_t gid; 142 143 int part, session; 144 145 unsigned long flags; 146 147 struct hlist_head rsrc_inodes; 148}; 149 150#define HFSPLUS_SB_WRITEBACKUP 0x0001 151#define HFSPLUS_SB_NODECOMPOSE 0x0002 152#define HFSPLUS_SB_FORCE 0x0004 153#define HFSPLUS_SB_HFSX 0x0008 154#define HFSPLUS_SB_CASEFOLD 0x0010 155 156 157struct hfsplus_inode_info { 158 struct mutex extents_lock; 159 u32 clump_blocks, alloc_blocks; 160 sector_t fs_blocks; 161 /* Allocation extents from catalog record or volume header */ 162 hfsplus_extent_rec first_extents; 163 u32 first_blocks; 164 hfsplus_extent_rec cached_extents; 165 u32 cached_start, cached_blocks; 166 atomic_t opencnt; 167 168 struct inode *rsrc_inode; 169 unsigned long flags; 170 171 __be32 create_date; 172 /* Device number in hfsplus_permissions in catalog */ 173 u32 dev; 174 /* BSD system and user file flags */ 175 u8 rootflags; 176 u8 userflags; 177 178 struct list_head open_dir_list; 179 loff_t phys_size; 180 struct inode vfs_inode; 181}; 182 183#define HFSPLUS_FLG_RSRC 0x0001 184#define HFSPLUS_FLG_EXT_DIRTY 0x0002 185#define HFSPLUS_FLG_EXT_NEW 0x0004 186 187#define HFSPLUS_IS_DATA(inode) (!(HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC)) 188#define HFSPLUS_IS_RSRC(inode) (HFSPLUS_I(inode).flags & HFSPLUS_FLG_RSRC) 189 190struct hfs_find_data { 191 /* filled by caller */ 192 hfsplus_btree_key *search_key; 193 hfsplus_btree_key *key; 194 /* filled by find */ 195 struct hfs_btree *tree; 196 struct hfs_bnode *bnode; 197 /* filled by findrec */ 198 int record; 199 int keyoffset, keylength; 200 int entryoffset, entrylength; 201}; 202 203struct hfsplus_readdir_data { 204 struct list_head list; 205 struct file *file; 206 struct hfsplus_cat_key key; 207}; 208 209#define hfs_btree_open hfsplus_btree_open 210#define hfs_btree_close hfsplus_btree_close 211#define hfs_btree_write hfsplus_btree_write 212#define hfs_bmap_alloc hfsplus_bmap_alloc 213#define hfs_bmap_free hfsplus_bmap_free 214#define hfs_bnode_read hfsplus_bnode_read 215#define hfs_bnode_read_u16 hfsplus_bnode_read_u16 216#define hfs_bnode_read_u8 hfsplus_bnode_read_u8 217#define hfs_bnode_read_key hfsplus_bnode_read_key 218#define hfs_bnode_write hfsplus_bnode_write 219#define hfs_bnode_write_u16 hfsplus_bnode_write_u16 220#define hfs_bnode_clear hfsplus_bnode_clear 221#define hfs_bnode_copy hfsplus_bnode_copy 222#define hfs_bnode_move hfsplus_bnode_move 223#define hfs_bnode_dump hfsplus_bnode_dump 224#define hfs_bnode_unlink hfsplus_bnode_unlink 225#define hfs_bnode_findhash hfsplus_bnode_findhash 226#define hfs_bnode_find hfsplus_bnode_find 227#define hfs_bnode_unhash hfsplus_bnode_unhash 228#define hfs_bnode_free hfsplus_bnode_free 229#define hfs_bnode_create hfsplus_bnode_create 230#define hfs_bnode_get hfsplus_bnode_get 231#define hfs_bnode_put hfsplus_bnode_put 232#define hfs_brec_lenoff hfsplus_brec_lenoff 233#define hfs_brec_keylen hfsplus_brec_keylen 234#define hfs_brec_insert hfsplus_brec_insert 235#define hfs_brec_remove hfsplus_brec_remove 236#define hfs_find_init hfsplus_find_init 237#define hfs_find_exit hfsplus_find_exit 238#define __hfs_brec_find __hplusfs_brec_find 239#define hfs_brec_find hfsplus_brec_find 240#define hfs_brec_read hfsplus_brec_read 241#define hfs_brec_goto hfsplus_brec_goto 242#define hfs_part_find hfsplus_part_find 243 244/* 245 * definitions for ext2 flag ioctls (linux really needs a generic 246 * interface for this). 247 */ 248 249/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support 250 * chattr/lsattr */ 251#define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS 252#define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS 253 254 255/* 256 * Functions in any *.c used in other files 257 */ 258 259/* bitmap.c */ 260int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *); 261int hfsplus_block_free(struct super_block *, u32, u32); 262 263/* btree.c */ 264struct hfs_btree *hfs_btree_open(struct super_block *, u32); 265void hfs_btree_close(struct hfs_btree *); 266void hfs_btree_write(struct hfs_btree *); 267struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *); 268void hfs_bmap_free(struct hfs_bnode *); 269 270/* bnode.c */ 271void hfs_bnode_read(struct hfs_bnode *, void *, int, int); 272u16 hfs_bnode_read_u16(struct hfs_bnode *, int); 273u8 hfs_bnode_read_u8(struct hfs_bnode *, int); 274void hfs_bnode_read_key(struct hfs_bnode *, void *, int); 275void hfs_bnode_write(struct hfs_bnode *, void *, int, int); 276void hfs_bnode_write_u16(struct hfs_bnode *, int, u16); 277void hfs_bnode_clear(struct hfs_bnode *, int, int); 278void hfs_bnode_copy(struct hfs_bnode *, int, 279 struct hfs_bnode *, int, int); 280void hfs_bnode_move(struct hfs_bnode *, int, int, int); 281void hfs_bnode_dump(struct hfs_bnode *); 282void hfs_bnode_unlink(struct hfs_bnode *); 283struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); 284struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32); 285void hfs_bnode_unhash(struct hfs_bnode *); 286void hfs_bnode_free(struct hfs_bnode *); 287struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); 288void hfs_bnode_get(struct hfs_bnode *); 289void hfs_bnode_put(struct hfs_bnode *); 290 291/* brec.c */ 292u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); 293u16 hfs_brec_keylen(struct hfs_bnode *, u16); 294int hfs_brec_insert(struct hfs_find_data *, void *, int); 295int hfs_brec_remove(struct hfs_find_data *); 296 297/* bfind.c */ 298int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); 299void hfs_find_exit(struct hfs_find_data *); 300int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *); 301int hfs_brec_find(struct hfs_find_data *); 302int hfs_brec_read(struct hfs_find_data *, void *, int); 303int hfs_brec_goto(struct hfs_find_data *, int); 304 305/* catalog.c */ 306int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 307int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 308void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *); 309int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *); 310int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *); 311int hfsplus_delete_cat(u32, struct inode *, struct qstr *); 312int hfsplus_rename_cat(u32, struct inode *, struct qstr *, 313 struct inode *, struct qstr *); 314 315/* dir.c */ 316extern const struct inode_operations hfsplus_dir_inode_operations; 317extern const struct file_operations hfsplus_dir_operations; 318 319/* extents.c */ 320int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); 321void hfsplus_ext_write_extent(struct inode *); 322int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); 323int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int); 324int hfsplus_file_extend(struct inode *); 325void hfsplus_file_truncate(struct inode *); 326 327/* inode.c */ 328extern const struct address_space_operations hfsplus_aops; 329extern const struct address_space_operations hfsplus_btree_aops; 330extern const struct dentry_operations hfsplus_dentry_operations; 331 332void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *); 333void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *); 334int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *); 335int hfsplus_cat_write_inode(struct inode *); 336struct inode *hfsplus_new_inode(struct super_block *, int); 337void hfsplus_delete_inode(struct inode *); 338 339/* ioctl.c */ 340long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); 341int hfsplus_setxattr(struct dentry *dentry, const char *name, 342 const void *value, size_t size, int flags); 343ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, 344 void *value, size_t size); 345ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); 346 347/* options.c */ 348int hfsplus_parse_options(char *, struct hfsplus_sb_info *); 349void hfsplus_fill_defaults(struct hfsplus_sb_info *); 350int hfsplus_show_options(struct seq_file *, struct vfsmount *); 351 352/* super.c */ 353struct inode *hfsplus_iget(struct super_block *, unsigned long); 354int hfsplus_sync_fs(struct super_block *sb, int wait); 355 356/* tables.c */ 357extern u16 hfsplus_case_fold_table[]; 358extern u16 hfsplus_decompose_table[]; 359extern u16 hfsplus_compose_table[]; 360 361/* unicode.c */ 362int hfsplus_strcasecmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 363int hfsplus_strcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *); 364int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *); 365int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int); 366int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str); 367int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *s2); 368 369/* wrapper.c */ 370int hfsplus_read_wrapper(struct super_block *); 371 372int hfs_part_find(struct super_block *, sector_t *, sector_t *); 373 374/* access macros */ 375/* 376static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb) 377{ 378 return sb->s_fs_info; 379} 380static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode) 381{ 382 return list_entry(inode, struct hfsplus_inode_info, vfs_inode); 383} 384*/ 385#define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info) 386#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode)) 387 388#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); }) 389#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; }) 390 391#define sb_bread512(sb, sec, data) ({ \ 392 struct buffer_head *__bh; \ 393 sector_t __block; \ 394 loff_t __start; \ 395 int __offset; \ 396 \ 397 __start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\ 398 __block = __start >> (sb)->s_blocksize_bits; \ 399 __offset = __start & ((sb)->s_blocksize - 1); \ 400 __bh = sb_bread((sb), __block); \ 401 if (likely(__bh != NULL)) \ 402 data = (void *)(__bh->b_data + __offset);\ 403 else \ 404 data = NULL; \ 405 __bh; \ 406}) 407 408/* time macros */ 409#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) 410#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U)) 411 412/* compatibility */ 413#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) } 414#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec) 415#define hfsp_now2mt() __hfsp_ut2mt(get_seconds()) 416 417#define kdev_t_to_nr(x) (x) 418 419#endif 420