diff options
author | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2008-11-06 15:53:46 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-06 18:41:20 -0500 |
commit | 9e975dae2970d22557662761c8505ce9fd165684 (patch) | |
tree | ecc662bd047ae784095b9effb4bafad99389b5f2 /include/linux | |
parent | 990e194e69009028e029b7d25da68c38241ec4f0 (diff) |
fat: split include/msdos_fs.h
This splits __KERNEL__ stuff in include/msdos_fs.h into fs/fat/fat.h.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/msdos_fs.h | 276 |
1 files changed, 2 insertions, 274 deletions
diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h index ba63858056c7..0982fb47a90d 100644 --- a/include/linux/msdos_fs.h +++ b/include/linux/msdos_fs.h | |||
@@ -167,282 +167,10 @@ struct msdos_dir_slot { | |||
167 | }; | 167 | }; |
168 | 168 | ||
169 | #ifdef __KERNEL__ | 169 | #ifdef __KERNEL__ |
170 | |||
171 | #include <linux/buffer_head.h> | ||
172 | #include <linux/string.h> | ||
173 | #include <linux/nls.h> | ||
174 | #include <linux/fs.h> | ||
175 | #include <linux/mutex.h> | ||
176 | |||
177 | /* | ||
178 | * vfat shortname flags | ||
179 | */ | ||
180 | #define VFAT_SFN_DISPLAY_LOWER 0x0001 /* convert to lowercase for display */ | ||
181 | #define VFAT_SFN_DISPLAY_WIN95 0x0002 /* emulate win95 rule for display */ | ||
182 | #define VFAT_SFN_DISPLAY_WINNT 0x0004 /* emulate winnt rule for display */ | ||
183 | #define VFAT_SFN_CREATE_WIN95 0x0100 /* emulate win95 rule for create */ | ||
184 | #define VFAT_SFN_CREATE_WINNT 0x0200 /* emulate winnt rule for create */ | ||
185 | |||
186 | struct fat_mount_options { | ||
187 | uid_t fs_uid; | ||
188 | gid_t fs_gid; | ||
189 | unsigned short fs_fmask; | ||
190 | unsigned short fs_dmask; | ||
191 | unsigned short codepage; /* Codepage for shortname conversions */ | ||
192 | char *iocharset; /* Charset used for filename input/display */ | ||
193 | unsigned short shortname; /* flags for shortname display/create rule */ | ||
194 | unsigned char name_check; /* r = relaxed, n = normal, s = strict */ | ||
195 | unsigned short allow_utime;/* permission for setting the [am]time */ | ||
196 | unsigned quiet:1, /* set = fake successful chmods and chowns */ | ||
197 | showexec:1, /* set = only set x bit for com/exe/bat */ | ||
198 | sys_immutable:1, /* set = system files are immutable */ | ||
199 | dotsOK:1, /* set = hidden and system files are named '.filename' */ | ||
200 | isvfat:1, /* 0=no vfat long filename support, 1=vfat support */ | ||
201 | utf8:1, /* Use of UTF-8 character set (Default) */ | ||
202 | unicode_xlate:1, /* create escape sequences for unhandled Unicode */ | ||
203 | numtail:1, /* Does first alias have a numeric '~1' type tail? */ | ||
204 | flush:1, /* write things quickly */ | ||
205 | nocase:1, /* Does this need case conversion? 0=need case conversion*/ | ||
206 | usefree:1, /* Use free_clusters for FAT32 */ | ||
207 | tz_utc:1; /* Filesystem timestamps are in UTC */ | ||
208 | }; | ||
209 | |||
210 | #define FAT_HASH_BITS 8 | ||
211 | #define FAT_HASH_SIZE (1UL << FAT_HASH_BITS) | ||
212 | #define FAT_HASH_MASK (FAT_HASH_SIZE-1) | ||
213 | |||
214 | /* | ||
215 | * MS-DOS file system in-core superblock data | ||
216 | */ | ||
217 | struct msdos_sb_info { | ||
218 | unsigned short sec_per_clus; /* sectors/cluster */ | ||
219 | unsigned short cluster_bits; /* log2(cluster_size) */ | ||
220 | unsigned int cluster_size; /* cluster size */ | ||
221 | unsigned char fats,fat_bits; /* number of FATs, FAT bits (12 or 16) */ | ||
222 | unsigned short fat_start; | ||
223 | unsigned long fat_length; /* FAT start & length (sec.) */ | ||
224 | unsigned long dir_start; | ||
225 | unsigned short dir_entries; /* root dir start & entries */ | ||
226 | unsigned long data_start; /* first data sector */ | ||
227 | unsigned long max_cluster; /* maximum cluster number */ | ||
228 | unsigned long root_cluster; /* first cluster of the root directory */ | ||
229 | unsigned long fsinfo_sector; /* sector number of FAT32 fsinfo */ | ||
230 | struct mutex fat_lock; | ||
231 | unsigned int prev_free; /* previously allocated cluster number */ | ||
232 | unsigned int free_clusters; /* -1 if undefined */ | ||
233 | unsigned int free_clus_valid; /* is free_clusters valid? */ | ||
234 | struct fat_mount_options options; | ||
235 | struct nls_table *nls_disk; /* Codepage used on disk */ | ||
236 | struct nls_table *nls_io; /* Charset used for input and display */ | ||
237 | const void *dir_ops; /* Opaque; default directory operations */ | ||
238 | int dir_per_block; /* dir entries per block */ | ||
239 | int dir_per_block_bits; /* log2(dir_per_block) */ | ||
240 | |||
241 | int fatent_shift; | ||
242 | struct fatent_operations *fatent_ops; | ||
243 | |||
244 | spinlock_t inode_hash_lock; | ||
245 | struct hlist_head inode_hashtable[FAT_HASH_SIZE]; | ||
246 | }; | ||
247 | |||
248 | #define FAT_CACHE_VALID 0 /* special case for valid cache */ | ||
249 | |||
250 | /* | ||
251 | * MS-DOS file system inode data in memory | ||
252 | */ | ||
253 | struct msdos_inode_info { | ||
254 | spinlock_t cache_lru_lock; | ||
255 | struct list_head cache_lru; | ||
256 | int nr_caches; | ||
257 | /* for avoiding the race between fat_free() and fat_get_cluster() */ | ||
258 | unsigned int cache_valid_id; | ||
259 | |||
260 | loff_t mmu_private; | ||
261 | int i_start; /* first cluster or 0 */ | ||
262 | int i_logstart; /* logical first cluster */ | ||
263 | int i_attrs; /* unused attribute bits */ | ||
264 | loff_t i_pos; /* on-disk position of directory entry or 0 */ | ||
265 | struct hlist_node i_fat_hash; /* hash by i_location */ | ||
266 | struct inode vfs_inode; | ||
267 | }; | ||
268 | |||
269 | struct fat_slot_info { | ||
270 | loff_t i_pos; /* on-disk position of directory entry */ | ||
271 | loff_t slot_off; /* offset for slot or de start */ | ||
272 | int nr_slots; /* number of slots + 1(de) in filename */ | ||
273 | struct msdos_dir_entry *de; | ||
274 | struct buffer_head *bh; | ||
275 | }; | ||
276 | |||
277 | static inline struct msdos_sb_info *MSDOS_SB(struct super_block *sb) | ||
278 | { | ||
279 | return sb->s_fs_info; | ||
280 | } | ||
281 | |||
282 | static inline struct msdos_inode_info *MSDOS_I(struct inode *inode) | ||
283 | { | ||
284 | return container_of(inode, struct msdos_inode_info, vfs_inode); | ||
285 | } | ||
286 | |||
287 | /* Return the FAT attribute byte for this inode */ | ||
288 | static inline u8 fat_attr(struct inode *inode) | ||
289 | { | ||
290 | return ((inode->i_mode & S_IWUGO) ? ATTR_NONE : ATTR_RO) | | ||
291 | (S_ISDIR(inode->i_mode) ? ATTR_DIR : ATTR_NONE) | | ||
292 | MSDOS_I(inode)->i_attrs; | ||
293 | } | ||
294 | |||
295 | static inline unsigned char fat_checksum(const __u8 *name) | ||
296 | { | ||
297 | unsigned char s = name[0]; | ||
298 | s = (s<<7) + (s>>1) + name[1]; s = (s<<7) + (s>>1) + name[2]; | ||
299 | s = (s<<7) + (s>>1) + name[3]; s = (s<<7) + (s>>1) + name[4]; | ||
300 | s = (s<<7) + (s>>1) + name[5]; s = (s<<7) + (s>>1) + name[6]; | ||
301 | s = (s<<7) + (s>>1) + name[7]; s = (s<<7) + (s>>1) + name[8]; | ||
302 | s = (s<<7) + (s>>1) + name[9]; s = (s<<7) + (s>>1) + name[10]; | ||
303 | return s; | ||
304 | } | ||
305 | |||
306 | static inline sector_t fat_clus_to_blknr(struct msdos_sb_info *sbi, int clus) | ||
307 | { | ||
308 | return ((sector_t)clus - FAT_START_ENT) * sbi->sec_per_clus | ||
309 | + sbi->data_start; | ||
310 | } | ||
311 | |||
312 | static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len) | ||
313 | { | ||
314 | #ifdef __BIG_ENDIAN | ||
315 | while (len--) { | ||
316 | *dst++ = src[0] | (src[1] << 8); | ||
317 | src += 2; | ||
318 | } | ||
319 | #else | ||
320 | memcpy(dst, src, len * 2); | ||
321 | #endif | ||
322 | } | ||
323 | |||
324 | static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len) | ||
325 | { | ||
326 | #ifdef __BIG_ENDIAN | ||
327 | while (len--) { | ||
328 | dst[0] = *src & 0x00FF; | ||
329 | dst[1] = (*src & 0xFF00) >> 8; | ||
330 | dst += 2; | ||
331 | src++; | ||
332 | } | ||
333 | #else | ||
334 | memcpy(dst, src, len * 2); | ||
335 | #endif | ||
336 | } | ||
337 | |||
338 | /* media of boot sector */ | 170 | /* media of boot sector */ |
339 | static inline int fat_valid_media(u8 media) | 171 | static inline int fat_valid_media(u8 media) |
340 | { | 172 | { |
341 | return 0xf8 <= media || media == 0xf0; | 173 | return 0xf8 <= media || media == 0xf0; |
342 | } | 174 | } |
343 | 175 | #endif /* !__KERNEL__ */ | |
344 | /* fat/cache.c */ | 176 | #endif /* !_LINUX_MSDOS_FS_H */ |
345 | extern void fat_cache_inval_inode(struct inode *inode); | ||
346 | extern int fat_get_cluster(struct inode *inode, int cluster, | ||
347 | int *fclus, int *dclus); | ||
348 | extern int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys, | ||
349 | unsigned long *mapped_blocks); | ||
350 | |||
351 | /* fat/dir.c */ | ||
352 | extern const struct file_operations fat_dir_operations; | ||
353 | extern int fat_search_long(struct inode *inode, const unsigned char *name, | ||
354 | int name_len, struct fat_slot_info *sinfo); | ||
355 | extern int fat_dir_empty(struct inode *dir); | ||
356 | extern int fat_subdirs(struct inode *dir); | ||
357 | extern int fat_scan(struct inode *dir, const unsigned char *name, | ||
358 | struct fat_slot_info *sinfo); | ||
359 | extern int fat_get_dotdot_entry(struct inode *dir, struct buffer_head **bh, | ||
360 | struct msdos_dir_entry **de, loff_t *i_pos); | ||
361 | extern int fat_alloc_new_dir(struct inode *dir, struct timespec *ts); | ||
362 | extern int fat_add_entries(struct inode *dir, void *slots, int nr_slots, | ||
363 | struct fat_slot_info *sinfo); | ||
364 | extern int fat_remove_entries(struct inode *dir, struct fat_slot_info *sinfo); | ||
365 | |||
366 | /* fat/fatent.c */ | ||
367 | struct fat_entry { | ||
368 | int entry; | ||
369 | union { | ||
370 | u8 *ent12_p[2]; | ||
371 | __le16 *ent16_p; | ||
372 | __le32 *ent32_p; | ||
373 | } u; | ||
374 | int nr_bhs; | ||
375 | struct buffer_head *bhs[2]; | ||
376 | }; | ||
377 | |||
378 | static inline void fatent_init(struct fat_entry *fatent) | ||
379 | { | ||
380 | fatent->nr_bhs = 0; | ||
381 | fatent->entry = 0; | ||
382 | fatent->u.ent32_p = NULL; | ||
383 | fatent->bhs[0] = fatent->bhs[1] = NULL; | ||
384 | } | ||
385 | |||
386 | static inline void fatent_set_entry(struct fat_entry *fatent, int entry) | ||
387 | { | ||
388 | fatent->entry = entry; | ||
389 | fatent->u.ent32_p = NULL; | ||
390 | } | ||
391 | |||
392 | static inline void fatent_brelse(struct fat_entry *fatent) | ||
393 | { | ||
394 | int i; | ||
395 | fatent->u.ent32_p = NULL; | ||
396 | for (i = 0; i < fatent->nr_bhs; i++) | ||
397 | brelse(fatent->bhs[i]); | ||
398 | fatent->nr_bhs = 0; | ||
399 | fatent->bhs[0] = fatent->bhs[1] = NULL; | ||
400 | } | ||
401 | |||
402 | extern void fat_ent_access_init(struct super_block *sb); | ||
403 | extern int fat_ent_read(struct inode *inode, struct fat_entry *fatent, | ||
404 | int entry); | ||
405 | extern int fat_ent_write(struct inode *inode, struct fat_entry *fatent, | ||
406 | int new, int wait); | ||
407 | extern int fat_alloc_clusters(struct inode *inode, int *cluster, | ||
408 | int nr_cluster); | ||
409 | extern int fat_free_clusters(struct inode *inode, int cluster); | ||
410 | extern int fat_count_free_clusters(struct super_block *sb); | ||
411 | |||
412 | /* fat/file.c */ | ||
413 | extern int fat_generic_ioctl(struct inode *inode, struct file *filp, | ||
414 | unsigned int cmd, unsigned long arg); | ||
415 | extern const struct file_operations fat_file_operations; | ||
416 | extern const struct inode_operations fat_file_inode_operations; | ||
417 | extern int fat_setattr(struct dentry * dentry, struct iattr * attr); | ||
418 | extern void fat_truncate(struct inode *inode); | ||
419 | extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry, | ||
420 | struct kstat *stat); | ||
421 | |||
422 | /* fat/inode.c */ | ||
423 | extern void fat_attach(struct inode *inode, loff_t i_pos); | ||
424 | extern void fat_detach(struct inode *inode); | ||
425 | extern struct inode *fat_iget(struct super_block *sb, loff_t i_pos); | ||
426 | extern struct inode *fat_build_inode(struct super_block *sb, | ||
427 | struct msdos_dir_entry *de, loff_t i_pos); | ||
428 | extern int fat_sync_inode(struct inode *inode); | ||
429 | extern int fat_fill_super(struct super_block *sb, void *data, int silent, | ||
430 | const struct inode_operations *fs_dir_inode_ops, int isvfat); | ||
431 | |||
432 | extern int fat_flush_inodes(struct super_block *sb, struct inode *i1, | ||
433 | struct inode *i2); | ||
434 | /* fat/misc.c */ | ||
435 | extern void fat_fs_panic(struct super_block *s, const char *fmt, ...); | ||
436 | extern void fat_clusters_flush(struct super_block *sb); | ||
437 | extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster); | ||
438 | extern int date_dos2unix(unsigned short time, unsigned short date, int tz_utc); | ||
439 | extern void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date, | ||
440 | int tz_utc); | ||
441 | extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs); | ||
442 | |||
443 | int fat_cache_init(void); | ||
444 | void fat_cache_destroy(void); | ||
445 | |||
446 | #endif /* __KERNEL__ */ | ||
447 | |||
448 | #endif | ||