page allocator: do not setup zonelist cache when there is only one node
[linux/fpc-iii.git] / fs / hfsplus / hfsplus_fs.h
blob5c10d803d9df1ea10dd20b4c0c5b122b36b85e18
1 /*
2 * linux/include/linux/hfsplus_fs.h
4 * Copyright (C) 1999
5 * Brad Boyer (flar@pants.nu)
6 * (C) 2003 Ardis Technologies <roman@ardistech.com>
8 */
10 #ifndef _LINUX_HFSPLUS_FS_H
11 #define _LINUX_HFSPLUS_FS_H
13 #include <linux/fs.h>
14 #include <linux/mutex.h>
15 #include <linux/buffer_head.h>
16 #include "hfsplus_raw.h"
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
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)
31 #define dprint(flg, fmt, args...) \
32 if (flg & DBG_MASK) printk(fmt , ## args)
34 /* Runtime config options */
35 #define HFSPLUS_DEF_CR_TYPE 0x3F3F3F3F /* '????' */
37 #define HFSPLUS_TYPE_DATA 0x00
38 #define HFSPLUS_TYPE_RSRC 0xFF
40 typedef int (*btree_keycmp)(const hfsplus_btree_key *, const hfsplus_btree_key *);
42 #define NODE_HASH_SIZE 256
44 /* An HFS+ BTree held in memory */
45 struct hfs_btree {
46 struct super_block *sb;
47 struct inode *inode;
48 btree_keycmp keycmp;
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;
59 unsigned int node_size;
60 unsigned int node_size_shift;
61 unsigned int max_key_len;
62 unsigned int depth;
64 //unsigned int map1_size, map_size;
65 struct semaphore tree_lock;
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;
73 struct page;
75 /* An HFS+ BTree node in memory */
76 struct hfs_bnode {
77 struct hfs_btree *tree;
79 u32 prev;
80 u32 this;
81 u32 next;
82 u32 parent;
84 u16 num_recs;
85 u8 type;
86 u8 height;
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];
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
103 * HFS+ superblock info (built from Volume Header on disk)
106 struct hfsplus_vh;
107 struct hfs_btree;
109 struct 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;
119 /* Runtime variables */
120 u32 blockoffset;
121 u32 sect_count;
122 int fs_shift;
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;
135 /* Config options */
136 u32 creator;
137 u32 type;
139 umode_t umask;
140 uid_t uid;
141 gid_t gid;
143 int part, session;
145 unsigned long flags;
147 struct hlist_head rsrc_inodes;
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
157 struct 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;
168 struct inode *rsrc_inode;
169 unsigned long flags;
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;
178 struct list_head open_dir_list;
179 loff_t phys_size;
180 struct inode vfs_inode;
183 #define HFSPLUS_FLG_RSRC 0x0001
184 #define HFSPLUS_FLG_EXT_DIRTY 0x0002
185 #define HFSPLUS_FLG_EXT_NEW 0x0004
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)
190 struct 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;
203 struct hfsplus_readdir_data {
204 struct list_head list;
205 struct file *file;
206 struct hfsplus_cat_key key;
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
245 * definitions for ext2 flag ioctls (linux really needs a generic
246 * interface for this).
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
256 * Functions in any *.c used in other files
259 /* bitmap.c */
260 int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *);
261 int hfsplus_block_free(struct super_block *, u32, u32);
263 /* btree.c */
264 struct hfs_btree *hfs_btree_open(struct super_block *, u32);
265 void hfs_btree_close(struct hfs_btree *);
266 void hfs_btree_write(struct hfs_btree *);
267 struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *);
268 void hfs_bmap_free(struct hfs_bnode *);
270 /* bnode.c */
271 void hfs_bnode_read(struct hfs_bnode *, void *, int, int);
272 u16 hfs_bnode_read_u16(struct hfs_bnode *, int);
273 u8 hfs_bnode_read_u8(struct hfs_bnode *, int);
274 void hfs_bnode_read_key(struct hfs_bnode *, void *, int);
275 void hfs_bnode_write(struct hfs_bnode *, void *, int, int);
276 void hfs_bnode_write_u16(struct hfs_bnode *, int, u16);
277 void hfs_bnode_clear(struct hfs_bnode *, int, int);
278 void hfs_bnode_copy(struct hfs_bnode *, int,
279 struct hfs_bnode *, int, int);
280 void hfs_bnode_move(struct hfs_bnode *, int, int, int);
281 void hfs_bnode_dump(struct hfs_bnode *);
282 void hfs_bnode_unlink(struct hfs_bnode *);
283 struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32);
284 struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32);
285 void hfs_bnode_unhash(struct hfs_bnode *);
286 void hfs_bnode_free(struct hfs_bnode *);
287 struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32);
288 void hfs_bnode_get(struct hfs_bnode *);
289 void hfs_bnode_put(struct hfs_bnode *);
291 /* brec.c */
292 u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *);
293 u16 hfs_brec_keylen(struct hfs_bnode *, u16);
294 int hfs_brec_insert(struct hfs_find_data *, void *, int);
295 int hfs_brec_remove(struct hfs_find_data *);
297 /* bfind.c */
298 int hfs_find_init(struct hfs_btree *, struct hfs_find_data *);
299 void hfs_find_exit(struct hfs_find_data *);
300 int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *);
301 int hfs_brec_find(struct hfs_find_data *);
302 int hfs_brec_read(struct hfs_find_data *, void *, int);
303 int hfs_brec_goto(struct hfs_find_data *, int);
305 /* catalog.c */
306 int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *);
307 int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *);
308 void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *, u32, struct qstr *);
309 int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *);
310 int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *);
311 int hfsplus_delete_cat(u32, struct inode *, struct qstr *);
312 int hfsplus_rename_cat(u32, struct inode *, struct qstr *,
313 struct inode *, struct qstr *);
315 /* dir.c */
316 extern const struct inode_operations hfsplus_dir_inode_operations;
317 extern const struct file_operations hfsplus_dir_operations;
319 /* extents.c */
320 int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *);
321 void hfsplus_ext_write_extent(struct inode *);
322 int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int);
323 int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int);
324 int hfsplus_file_extend(struct inode *);
325 void hfsplus_file_truncate(struct inode *);
327 /* inode.c */
328 extern const struct address_space_operations hfsplus_aops;
329 extern const struct address_space_operations hfsplus_btree_aops;
330 extern const struct dentry_operations hfsplus_dentry_operations;
332 void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *);
333 void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *);
334 int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *);
335 int hfsplus_cat_write_inode(struct inode *);
336 struct inode *hfsplus_new_inode(struct super_block *, int);
337 void hfsplus_delete_inode(struct inode *);
339 /* ioctl.c */
340 int hfsplus_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
341 unsigned long arg);
342 int hfsplus_setxattr(struct dentry *dentry, const char *name,
343 const void *value, size_t size, int flags);
344 ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
345 void *value, size_t size);
346 ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
348 /* options.c */
349 int hfsplus_parse_options(char *, struct hfsplus_sb_info *);
350 void hfsplus_fill_defaults(struct hfsplus_sb_info *);
351 int hfsplus_show_options(struct seq_file *, struct vfsmount *);
353 /* super.c */
354 struct inode *hfsplus_iget(struct super_block *, unsigned long);
356 /* tables.c */
357 extern u16 hfsplus_case_fold_table[];
358 extern u16 hfsplus_decompose_table[];
359 extern u16 hfsplus_compose_table[];
361 /* unicode.c */
362 int hfsplus_strcasecmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *);
363 int hfsplus_strcmp(const struct hfsplus_unistr *, const struct hfsplus_unistr *);
364 int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *);
365 int hfsplus_asc2uni(struct super_block *, struct hfsplus_unistr *, const char *, int);
366 int hfsplus_hash_dentry(struct dentry *dentry, struct qstr *str);
367 int hfsplus_compare_dentry(struct dentry *dentry, struct qstr *s1, struct qstr *s2);
369 /* wrapper.c */
370 int hfsplus_read_wrapper(struct super_block *);
372 int hfs_part_find(struct super_block *, sector_t *, sector_t *);
374 /* access macros */
376 static inline struct hfsplus_sb_info *HFSPLUS_SB(struct super_block *sb)
378 return sb->s_fs_info;
380 static inline struct hfsplus_inode_info *HFSPLUS_I(struct inode *inode)
382 return list_entry(inode, struct hfsplus_inode_info, vfs_inode);
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))
388 #if 1
389 #define hfsplus_kmap(p) ({ struct page *__p = (p); kmap(__p); })
390 #define hfsplus_kunmap(p) ({ struct page *__p = (p); kunmap(__p); __p; })
391 #else
392 #define hfsplus_kmap(p) kmap(p)
393 #define hfsplus_kunmap(p) kunmap(p)
394 #endif
396 #define sb_bread512(sb, sec, data) ({ \
397 struct buffer_head *__bh; \
398 sector_t __block; \
399 loff_t __start; \
400 int __offset; \
402 __start = (loff_t)(sec) << HFSPLUS_SECTOR_SHIFT;\
403 __block = __start >> (sb)->s_blocksize_bits; \
404 __offset = __start & ((sb)->s_blocksize - 1); \
405 __bh = sb_bread((sb), __block); \
406 if (likely(__bh != NULL)) \
407 data = (void *)(__bh->b_data + __offset);\
408 else \
409 data = NULL; \
410 __bh; \
413 /* time macros */
414 #define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U)
415 #define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U))
417 /* compatibility */
418 #define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) }
419 #define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec)
420 #define hfsp_now2mt() __hfsp_ut2mt(get_seconds())
422 #define kdev_t_to_nr(x) (x)
424 #endif