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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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/version.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)(hfsplus_btree_key *, 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 atomic_t inode_cnt;
148 u32 last_inode_cnt;
149
150 struct hlist_head rsrc_inodes;
151};
152
153#define HFSPLUS_SB_WRITEBACKUP 0x0001
154#define HFSPLUS_SB_NODECOMPOSE 0x0002
155
156
157struct hfsplus_inode_info {
158 struct semaphore 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 /* 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
189struct 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
202struct 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 _IOR('f', 1, long)
251#define HFSPLUS_IOC_EXT2_SETFLAGS _IOW('f', 2, long)
252
253#define EXT2_FLAG_IMMUTABLE 0x00000010 /* Immutable file */
254#define EXT2_FLAG_APPEND 0x00000020 /* writes to file may only append */
255#define EXT2_FLAG_NODUMP 0x00000040 /* do not dump file */
256
257
258/*
259 * Functions in any *.c used in other files
260 */
261
262/* bitmap.c */
263int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *);
264int hfsplus_block_free(struct super_block *, u32, u32);
265
266/* btree.c */
267struct hfs_btree *hfs_btree_open(struct super_block *, u32);
268void hfs_btree_close(struct hfs_btree *);
269void hfs_btree_write(struct hfs_btree *);
270struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *);
271void hfs_bmap_free(struct hfs_bnode *);
272
273/* bnode.c */
274void hfs_bnode_read(struct hfs_bnode *, void *, int, int);
275u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
276u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
277void hfs_bnode_read_key(struct hfs_bnode *, void *, int);
278void hfs_bnode_write(struct hfs_bnode *, void *, int, int);
279void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
280void hfs_bnode_clear(struct hfs_bnode *, int, int);
281void hfs_bnode_copy(struct hfs_bnode *, int,
282 struct hfs_bnode *, int, int);
283void hfs_bnode_move(struct hfs_bnode *, int, int, int);
284void hfs_bnode_dump(struct hfs_bnode *);
285void hfs_bnode_unlink(struct hfs_bnode *);
286struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32);
287struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32);
288void hfs_bnode_unhash(struct hfs_bnode *);
289void hfs_bnode_free(struct hfs_bnode *);
290struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32);
291void hfs_bnode_get(struct hfs_bnode *);
292void hfs_bnode_put(struct hfs_bnode *);
293
294/* brec.c */
295u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *);
296u16 hfs_brec_keylen(struct hfs_bnode *, u16);
297int hfs_brec_insert(struct hfs_find_data *, void *, int);
298int hfs_brec_remove(struct hfs_find_data *);
299
300/* bfind.c */
301int hfs_find_init(struct hfs_btree *, struct hfs_find_data *);
302void hfs_find_exit(struct hfs_find_data *);
303int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *);
304int hfs_brec_find(struct hfs_find_data *);
305int hfs_brec_read(struct hfs_find_data *, void *, int);
306int hfs_brec_goto(struct hfs_find_data *, int);
307
308/* catalog.c */
309int hfsplus_cat_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *);
310void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *);
311int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *);
312int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *);
313int hfsplus_delete_cat(u32, struct inode *, struct qstr *);
314int hfsplus_rename_cat(u32, struct inode *, struct qstr *,
315 struct inode *, struct qstr *);
316
317/* extents.c */
318int hfsplus_ext_cmp_key(hfsplus_btree_key *, hfsplus_btree_key *);
319void hfsplus_ext_write_extent(struct inode *);
320int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int);
321int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int);
322int hfsplus_file_extend(struct inode *);
323void hfsplus_file_truncate(struct inode *);
324
325/* inode.c */
326extern struct address_space_operations hfsplus_aops;
327extern struct address_space_operations hfsplus_btree_aops;
328
329void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *);
330void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *);
331int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *);
332int hfsplus_cat_write_inode(struct inode *);
333struct inode *hfsplus_new_inode(struct super_block *, int);
334void hfsplus_delete_inode(struct inode *);
335
336/* ioctl.c */
337int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
338 unsigned long arg);
339int hfsplus_setxattr(struct dentry *dentry, const char *name,
340 const void *value, size_t size, int flags);
341ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
342 void *value, size_t size);
343ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
344
345/* options.c */
Roman Zippel717dd80e2005-09-06 15:18:48 -0700346int hfsplus_parse_options(char *, struct hfsplus_sb_info *);
347void hfsplus_fill_defaults(struct hfsplus_sb_info *);
348int hfsplus_show_options(struct seq_file *, struct vfsmount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
350/* tables.c */
351extern u16 hfsplus_case_fold_table[];
352extern u16 hfsplus_decompose_table[];
353extern u16 hfsplus_compose_table[];
354
355/* unicode.c */
356int hfsplus_unistrcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *);
357int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *);
358int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int);
359
360/* wrapper.c */
361int hfsplus_read_wrapper(struct super_block *);
362
363int hfs_part_find(struct super_block *, sector_t *, sector_t *);
364
365/* access macros */
366/*
367static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
368{
369 return sb->s_fs_info;
370}
371static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
372{
373 return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
374}
375*/
376#define HFSPLUS_SB(super) (*(struct hfsplus_sb_info *)(super)->s_fs_info)
377#define HFSPLUS_I(inode) (*list_entry(inode, struct hfsplus_inode_info, vfs_inode))
378
379#if 1
380#define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); })
381#define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; })
382#else
383#define hfsplus_kmap(p) kmap(p)
384#define hfsplus_kunmap(p) kunmap(p)
385#endif
386
387#define sb_bread512(sb, sec, data) ({ \
388 struct buffer_head *__bh; \
389 sector_t __block; \
390 loff_t __start; \
391 int __offset; \
392 \
393 __start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\
394 __block = __start >> (sb)->s_blocksize_bits; \
395 __offset = __start & ((sb)->s_blocksize - 1); \
396 __bh = sb_bread((sb), __block); \
397 if (likely(__bh != NULL)) \
398 data = (void *)(__bh->b_data + __offset);\
399 else \
400 data = NULL; \
401 __bh; \
402})
403
404/* time macros */
405#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
406#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U))
407
408/* compatibility */
409#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
410#define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
411#define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
412
413#define kdev_t_to_nr(x) (x)
414
415#endif