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11#ifndef _LINUX_HFSPLUS_FS_H
12#define _LINUX_HFSPLUS_FS_H
13
14#ifdef pr_fmt
15#undef pr_fmt
16#endif
17
18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20#include <linux/fs.h>
21#include <linux/mutex.h>
22#include <linux/buffer_head.h>
23#include <linux/blkdev.h>
24#include "hfsplus_raw.h"
25
26#define DBG_BNODE_REFS 0x00000001
27#define DBG_BNODE_MOD 0x00000002
28#define DBG_CAT_MOD 0x00000004
29#define DBG_INODE 0x00000008
30#define DBG_SUPER 0x00000010
31#define DBG_EXTENT 0x00000020
32#define DBG_BITMAP 0x00000040
33#define DBG_ATTR_MOD 0x00000080
34
35#if 0
36#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD)
37#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE)
38#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT)
39#endif
40#define DBG_MASK (0)
41
42#define hfs_dbg(flg, fmt, ...) \
43do { \
44 if (DBG_##flg & DBG_MASK) \
45 printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \
46} while (0)
47
48#define hfs_dbg_cont(flg, fmt, ...) \
49do { \
50 if (DBG_##flg & DBG_MASK) \
51 pr_cont(fmt, ##__VA_ARGS__); \
52} while (0)
53
54
55#define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F
56
57#define HFSPLUS_TYPE_DATA 0x00
58#define HFSPLUS_TYPE_RSRC 0xFF
59
60typedef int (*btree_keycmp)(const hfsplus_btree_key *,
61 const hfsplus_btree_key *);
62
63#define NODE_HASH_SIZE 256
64
65
66enum hfsplus_btree_mutex_classes {
67 CATALOG_BTREE_MUTEX,
68 EXTENTS_BTREE_MUTEX,
69 ATTR_BTREE_MUTEX,
70};
71
72
73struct hfs_btree {
74 struct super_block *sb;
75 struct inode *inode;
76 btree_keycmp keycmp;
77
78 u32 cnid;
79 u32 root;
80 u32 leaf_count;
81 u32 leaf_head;
82 u32 leaf_tail;
83 u32 node_count;
84 u32 free_nodes;
85 u32 attributes;
86
87 unsigned int node_size;
88 unsigned int node_size_shift;
89 unsigned int max_key_len;
90 unsigned int depth;
91
92 struct mutex tree_lock;
93
94 unsigned int pages_per_bnode;
95 spinlock_t hash_lock;
96 struct hfs_bnode *node_hash[NODE_HASH_SIZE];
97 int node_hash_cnt;
98};
99
100struct page;
101
102
103struct hfs_bnode {
104 struct hfs_btree *tree;
105
106 u32 prev;
107 u32 this;
108 u32 next;
109 u32 parent;
110
111 u16 num_recs;
112 u8 type;
113 u8 height;
114
115 struct hfs_bnode *next_hash;
116 unsigned long flags;
117 wait_queue_head_t lock_wq;
118 atomic_t refcnt;
119 unsigned int page_offset;
120 struct page *page[0];
121};
122
123#define HFS_BNODE_LOCK 0
124#define HFS_BNODE_ERROR 1
125#define HFS_BNODE_NEW 2
126#define HFS_BNODE_DIRTY 3
127#define HFS_BNODE_DELETED 4
128
129
130
131
132#define HFSPLUS_EMPTY_ATTR_TREE 0
133#define HFSPLUS_CREATING_ATTR_TREE 1
134#define HFSPLUS_VALID_ATTR_TREE 2
135#define HFSPLUS_FAILED_ATTR_TREE 3
136
137
138
139
140
141struct hfsplus_vh;
142struct hfs_btree;
143
144struct hfsplus_sb_info {
145 void *s_vhdr_buf;
146 struct hfsplus_vh *s_vhdr;
147 void *s_backup_vhdr_buf;
148 struct hfsplus_vh *s_backup_vhdr;
149 struct hfs_btree *ext_tree;
150 struct hfs_btree *cat_tree;
151 struct hfs_btree *attr_tree;
152 atomic_t attr_tree_state;
153 struct inode *alloc_file;
154 struct inode *hidden_dir;
155 struct nls_table *nls;
156
157
158 u32 blockoffset;
159 sector_t part_start;
160 sector_t sect_count;
161 int fs_shift;
162
163
164 u32 alloc_blksz;
165 int alloc_blksz_shift;
166 u32 total_blocks;
167 u32 data_clump_blocks, rsrc_clump_blocks;
168
169
170 u32 free_blocks;
171 struct mutex alloc_mutex;
172
173
174 u32 next_cnid;
175 u32 file_count;
176 u32 folder_count;
177 struct mutex vh_mutex;
178
179
180 u32 creator;
181 u32 type;
182
183 umode_t umask;
184 kuid_t uid;
185 kgid_t gid;
186
187 int part, session;
188 unsigned long flags;
189
190 int work_queued;
191 struct delayed_work sync_work;
192 spinlock_t work_lock;
193};
194
195#define HFSPLUS_SB_WRITEBACKUP 0
196#define HFSPLUS_SB_NODECOMPOSE 1
197#define HFSPLUS_SB_FORCE 2
198#define HFSPLUS_SB_HFSX 3
199#define HFSPLUS_SB_CASEFOLD 4
200#define HFSPLUS_SB_NOBARRIER 5
201
202static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
203{
204 return sb->s_fs_info;
205}
206
207
208struct hfsplus_inode_info {
209 atomic_t opencnt;
210
211
212
213
214 u32 first_blocks;
215 u32 clump_blocks;
216 u32 alloc_blocks;
217 u32 cached_start;
218 u32 cached_blocks;
219 hfsplus_extent_rec first_extents;
220 hfsplus_extent_rec cached_extents;
221 unsigned int extent_state;
222 struct mutex extents_lock;
223
224
225
226
227 struct inode *rsrc_inode;
228 __be32 create_date;
229
230
231
232
233 u32 linkid;
234
235
236
237
238 unsigned long flags;
239
240
241
242
243 sector_t fs_blocks;
244 u8 userflags;
245 u32 subfolders;
246 struct list_head open_dir_list;
247 spinlock_t open_dir_lock;
248 loff_t phys_size;
249
250 struct inode vfs_inode;
251};
252
253#define HFSPLUS_EXT_DIRTY 0x0001
254#define HFSPLUS_EXT_NEW 0x0002
255
256#define HFSPLUS_I_RSRC 0
257#define HFSPLUS_I_CAT_DIRTY 1
258#define HFSPLUS_I_EXT_DIRTY 2
259#define HFSPLUS_I_ALLOC_DIRTY 3
260#define HFSPLUS_I_ATTR_DIRTY 4
261
262#define HFSPLUS_IS_RSRC(inode) \
263 test_bit(HFSPLUS_I_RSRC, &HFSPLUS_I(inode)->flags)
264
265static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
266{
267 return container_of(inode, struct hfsplus_inode_info, vfs_inode);
268}
269
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274
275
276static inline void hfsplus_mark_inode_dirty(struct inode *inode,
277 unsigned int flag)
278{
279 set_bit(flag, &HFSPLUS_I(inode)->flags);
280 mark_inode_dirty(inode);
281}
282
283struct hfs_find_data {
284
285 hfsplus_btree_key *search_key;
286 hfsplus_btree_key *key;
287
288 struct hfs_btree *tree;
289 struct hfs_bnode *bnode;
290
291 int record;
292 int keyoffset, keylength;
293 int entryoffset, entrylength;
294};
295
296struct hfsplus_readdir_data {
297 struct list_head list;
298 struct file *file;
299 struct hfsplus_cat_key key;
300};
301
302
303
304
305static inline unsigned short hfsplus_min_io_size(struct super_block *sb)
306{
307 return max_t(unsigned short, bdev_logical_block_size(sb->s_bdev),
308 HFSPLUS_SECTOR_SIZE);
309}
310
311#define hfs_btree_open hfsplus_btree_open
312#define hfs_btree_close hfsplus_btree_close
313#define hfs_btree_write hfsplus_btree_write
314#define hfs_bmap_reserve hfsplus_bmap_reserve
315#define hfs_bmap_alloc hfsplus_bmap_alloc
316#define hfs_bmap_free hfsplus_bmap_free
317#define hfs_bnode_read hfsplus_bnode_read
318#define hfs_bnode_read_u16 hfsplus_bnode_read_u16
319#define hfs_bnode_read_u8 hfsplus_bnode_read_u8
320#define hfs_bnode_read_key hfsplus_bnode_read_key
321#define hfs_bnode_write hfsplus_bnode_write
322#define hfs_bnode_write_u16 hfsplus_bnode_write_u16
323#define hfs_bnode_clear hfsplus_bnode_clear
324#define hfs_bnode_copy hfsplus_bnode_copy
325#define hfs_bnode_move hfsplus_bnode_move
326#define hfs_bnode_dump hfsplus_bnode_dump
327#define hfs_bnode_unlink hfsplus_bnode_unlink
328#define hfs_bnode_findhash hfsplus_bnode_findhash
329#define hfs_bnode_find hfsplus_bnode_find
330#define hfs_bnode_unhash hfsplus_bnode_unhash
331#define hfs_bnode_free hfsplus_bnode_free
332#define hfs_bnode_create hfsplus_bnode_create
333#define hfs_bnode_get hfsplus_bnode_get
334#define hfs_bnode_put hfsplus_bnode_put
335#define hfs_brec_lenoff hfsplus_brec_lenoff
336#define hfs_brec_keylen hfsplus_brec_keylen
337#define hfs_brec_insert hfsplus_brec_insert
338#define hfs_brec_remove hfsplus_brec_remove
339#define hfs_find_init hfsplus_find_init
340#define hfs_find_exit hfsplus_find_exit
341#define __hfs_brec_find __hfsplus_brec_find
342#define hfs_brec_find hfsplus_brec_find
343#define hfs_brec_read hfsplus_brec_read
344#define hfs_brec_goto hfsplus_brec_goto
345#define hfs_part_find hfsplus_part_find
346
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352
353
354#define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS
355#define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS
356
357
358
359
360
361#define HFSPLUS_IOC_BLESS _IO('h', 0x80)
362
363typedef int (*search_strategy_t)(struct hfs_bnode *,
364 struct hfs_find_data *,
365 int *, int *, int *);
366
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368
369
370
371
372int __init hfsplus_create_attr_tree_cache(void);
373void hfsplus_destroy_attr_tree_cache(void);
374int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *k1,
375 const hfsplus_btree_key *k2);
376int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key,
377 u32 cnid, const char *name);
378hfsplus_attr_entry *hfsplus_alloc_attr_entry(void);
379void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry);
380int hfsplus_find_attr(struct super_block *sb, u32 cnid, const char *name,
381 struct hfs_find_data *fd);
382int hfsplus_attr_exists(struct inode *inode, const char *name);
383int hfsplus_create_attr(struct inode *inode, const char *name,
384 const void *value, size_t size);
385int hfsplus_delete_attr(struct inode *inode, const char *name);
386int hfsplus_delete_all_attrs(struct inode *dir, u32 cnid);
387
388
389int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset,
390 u32 *max);
391int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count);
392
393
394u32 hfsplus_calc_btree_clump_size(u32 block_size, u32 node_size, u64 sectors,
395 int file_id);
396struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id);
397void hfs_btree_close(struct hfs_btree *tree);
398int hfs_btree_write(struct hfs_btree *tree);
399int hfs_bmap_reserve(struct hfs_btree *tree, int rsvd_nodes);
400struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree);
401void hfs_bmap_free(struct hfs_bnode *node);
402
403
404void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len);
405u16 hfs_bnode_read_u16(struct hfs_bnode *node, int off);
406u8 hfs_bnode_read_u8(struct hfs_bnode *node, int off);
407void hfs_bnode_read_key(struct hfs_bnode *node, void *key, int off);
408void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len);
409void hfs_bnode_write_u16(struct hfs_bnode *node, int off, u16 data);
410void hfs_bnode_clear(struct hfs_bnode *node, int off, int len);
411void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst,
412 struct hfs_bnode *src_node, int src, int len);
413void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len);
414void hfs_bnode_dump(struct hfs_bnode *node);
415void hfs_bnode_unlink(struct hfs_bnode *node);
416struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid);
417void hfs_bnode_unhash(struct hfs_bnode *node);
418struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num);
419void hfs_bnode_free(struct hfs_bnode *node);
420struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num);
421void hfs_bnode_get(struct hfs_bnode *node);
422void hfs_bnode_put(struct hfs_bnode *node);
423bool hfs_bnode_need_zeroout(struct hfs_btree *tree);
424
425
426u16 hfs_brec_lenoff(struct hfs_bnode *node, u16 rec, u16 *off);
427u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec);
428int hfs_brec_insert(struct hfs_find_data *fd, void *entry, int entry_len);
429int hfs_brec_remove(struct hfs_find_data *fd);
430
431
432int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd);
433void hfs_find_exit(struct hfs_find_data *fd);
434int hfs_find_1st_rec_by_cnid(struct hfs_bnode *bnode, struct hfs_find_data *fd,
435 int *begin, int *end, int *cur_rec);
436int hfs_find_rec_by_key(struct hfs_bnode *bnode, struct hfs_find_data *fd,
437 int *begin, int *end, int *cur_rec);
438int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd,
439 search_strategy_t rec_found);
440int hfs_brec_find(struct hfs_find_data *fd, search_strategy_t do_key_compare);
441int hfs_brec_read(struct hfs_find_data *fd, void *rec, int rec_len);
442int hfs_brec_goto(struct hfs_find_data *fd, int cnt);
443
444
445int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
446 const hfsplus_btree_key *k2);
447int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
448 const hfsplus_btree_key *k2);
449int hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
450 u32 parent, const struct qstr *str);
451void hfsplus_cat_build_key_with_cnid(struct super_block *sb,
452 hfsplus_btree_key *key, u32 parent);
453void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms);
454int hfsplus_find_cat(struct super_block *sb, u32 cnid,
455 struct hfs_find_data *fd);
456int hfsplus_create_cat(u32 cnid, struct inode *dir, const struct qstr *str,
457 struct inode *inode);
458int hfsplus_delete_cat(u32 cnid, struct inode *dir, const struct qstr *str);
459int hfsplus_rename_cat(u32 cnid, struct inode *src_dir, const struct qstr *src_name,
460 struct inode *dst_dir, const struct qstr *dst_name);
461
462
463extern const struct inode_operations hfsplus_dir_inode_operations;
464extern const struct file_operations hfsplus_dir_operations;
465
466
467int hfsplus_ext_cmp_key(const hfsplus_btree_key *k1,
468 const hfsplus_btree_key *k2);
469int hfsplus_ext_write_extent(struct inode *inode);
470int hfsplus_get_block(struct inode *inode, sector_t iblock,
471 struct buffer_head *bh_result, int create);
472int hfsplus_free_fork(struct super_block *sb, u32 cnid,
473 struct hfsplus_fork_raw *fork, int type);
474int hfsplus_file_extend(struct inode *inode, bool zeroout);
475void hfsplus_file_truncate(struct inode *inode);
476
477
478extern const struct address_space_operations hfsplus_aops;
479extern const struct address_space_operations hfsplus_btree_aops;
480extern const struct dentry_operations hfsplus_dentry_operations;
481
482struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
483 umode_t mode);
484void hfsplus_delete_inode(struct inode *inode);
485void hfsplus_inode_read_fork(struct inode *inode,
486 struct hfsplus_fork_raw *fork);
487void hfsplus_inode_write_fork(struct inode *inode,
488 struct hfsplus_fork_raw *fork);
489int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd);
490int hfsplus_cat_write_inode(struct inode *inode);
491int hfsplus_getattr(const struct path *path, struct kstat *stat,
492 u32 request_mask, unsigned int query_flags);
493int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end,
494 int datasync);
495
496
497long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
498
499
500void hfsplus_fill_defaults(struct hfsplus_sb_info *opts);
501int hfsplus_parse_options_remount(char *input, int *force);
502int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi);
503int hfsplus_show_options(struct seq_file *seq, struct dentry *root);
504
505
506int hfs_part_find(struct super_block *sb, sector_t *part_start,
507 sector_t *part_size);
508
509
510struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino);
511void hfsplus_mark_mdb_dirty(struct super_block *sb);
512
513
514extern u16 hfsplus_case_fold_table[];
515extern u16 hfsplus_decompose_table[];
516extern u16 hfsplus_compose_table[];
517
518
519int hfsplus_strcasecmp(const struct hfsplus_unistr *s1,
520 const struct hfsplus_unistr *s2);
521int hfsplus_strcmp(const struct hfsplus_unistr *s1,
522 const struct hfsplus_unistr *s2);
523int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr,
524 char *astr, int *len_p);
525int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr,
526 int max_unistr_len, const char *astr, int len);
527int hfsplus_hash_dentry(const struct dentry *dentry, struct qstr *str);
528int hfsplus_compare_dentry(const struct dentry *dentry, unsigned int len,
529 const char *str, const struct qstr *name);
530
531
532int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf,
533 void **data, int op, int op_flags);
534int hfsplus_read_wrapper(struct super_block *sb);
535
536
537#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
538#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U))
539
540
541#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
542#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
543#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
544
545#endif
546