Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _LINUX_MSDOS_FS_H |
2 | #define _LINUX_MSDOS_FS_H | |
3 | ||
e18fa700 | 4 | #include <linux/magic.h> |
4596c8aa | 5 | #include <asm/byteorder.h> |
e18fa700 | 6 | |
1da177e4 LT |
7 | /* |
8 | * The MS-DOS filesystem constants/structures | |
9 | */ | |
1da177e4 LT |
10 | |
11 | #define SECTOR_SIZE 512 /* sector size (bytes) */ | |
12 | #define SECTOR_BITS 9 /* log2(SECTOR_SIZE) */ | |
13 | #define MSDOS_DPB (MSDOS_DPS) /* dir entries per block */ | |
14 | #define MSDOS_DPB_BITS 4 /* log2(MSDOS_DPB) */ | |
15 | #define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry)) | |
16 | #define MSDOS_DPS_BITS 4 /* log2(MSDOS_DPS) */ | |
17 | #define CF_LE_W(v) le16_to_cpu(v) | |
18 | #define CF_LE_L(v) le32_to_cpu(v) | |
19 | #define CT_LE_W(v) cpu_to_le16(v) | |
20 | #define CT_LE_L(v) cpu_to_le32(v) | |
21 | ||
22 | ||
1da177e4 LT |
23 | #define MSDOS_ROOT_INO 1 /* == MINIX_ROOT_INO */ |
24 | #define MSDOS_DIR_BITS 5 /* log2(sizeof(struct msdos_dir_entry)) */ | |
25 | ||
26 | /* directory limit */ | |
27 | #define FAT_MAX_DIR_ENTRIES (65536) | |
28 | #define FAT_MAX_DIR_SIZE (FAT_MAX_DIR_ENTRIES << MSDOS_DIR_BITS) | |
29 | ||
30 | #define ATTR_NONE 0 /* no attribute bits */ | |
31 | #define ATTR_RO 1 /* read-only */ | |
32 | #define ATTR_HIDDEN 2 /* hidden */ | |
33 | #define ATTR_SYS 4 /* system */ | |
34 | #define ATTR_VOLUME 8 /* volume label */ | |
35 | #define ATTR_DIR 16 /* directory */ | |
36 | #define ATTR_ARCH 32 /* archived */ | |
37 | ||
38 | /* attribute bits that are copied "as is" */ | |
39 | #define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN) | |
40 | /* bits that are used by the Windows 95/Windows NT extended FAT */ | |
41 | #define ATTR_EXT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME) | |
42 | ||
43 | #define CASE_LOWER_BASE 8 /* base is lower case */ | |
44 | #define CASE_LOWER_EXT 16 /* extension is lower case */ | |
45 | ||
46 | #define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */ | |
47 | #define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG) | |
48 | ||
49 | /* valid file mode bits */ | |
50 | #define MSDOS_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO) | |
51 | /* Convert attribute bits and a mask to the UNIX mode. */ | |
52 | #define MSDOS_MKMODE(a, m) (m & (a & ATTR_RO ? S_IRUGO|S_IXUGO : S_IRWXUGO)) | |
53 | ||
54 | #define MSDOS_NAME 11 /* maximum name length */ | |
55 | #define MSDOS_LONGNAME 256 /* maximum name length */ | |
56 | #define MSDOS_SLOTS 21 /* max # of slots for short and long names */ | |
57 | #define MSDOS_DOT ". " /* ".", padded to MSDOS_NAME chars */ | |
58 | #define MSDOS_DOTDOT ".. " /* "..", padded to MSDOS_NAME chars */ | |
59 | ||
1da177e4 LT |
60 | #define FAT_FIRST_ENT(s, x) ((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : \ |
61 | MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x)) | |
62 | ||
63 | /* start of data cluster's entry (number of reserved clusters) */ | |
64 | #define FAT_START_ENT 2 | |
65 | ||
66 | /* maximum number of clusters */ | |
67 | #define MAX_FAT12 0xFF4 | |
68 | #define MAX_FAT16 0xFFF4 | |
69 | #define MAX_FAT32 0x0FFFFFF6 | |
70 | #define MAX_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? MAX_FAT32 : \ | |
71 | MSDOS_SB(s)->fat_bits == 16 ? MAX_FAT16 : MAX_FAT12) | |
72 | ||
73 | /* bad cluster mark */ | |
74 | #define BAD_FAT12 0xFF7 | |
75 | #define BAD_FAT16 0xFFF7 | |
76 | #define BAD_FAT32 0x0FFFFFF7 | |
77 | ||
78 | /* standard EOF */ | |
79 | #define EOF_FAT12 0xFFF | |
80 | #define EOF_FAT16 0xFFFF | |
81 | #define EOF_FAT32 0x0FFFFFFF | |
82 | ||
83 | #define FAT_ENT_FREE (0) | |
84 | #define FAT_ENT_BAD (BAD_FAT32) | |
85 | #define FAT_ENT_EOF (EOF_FAT32) | |
86 | ||
87 | #define FAT_FSINFO_SIG1 0x41615252 | |
88 | #define FAT_FSINFO_SIG2 0x61417272 | |
89 | #define IS_FSINFO(x) (le32_to_cpu((x)->signature1) == FAT_FSINFO_SIG1 \ | |
90 | && le32_to_cpu((x)->signature2) == FAT_FSINFO_SIG2) | |
91 | ||
4596c8aa OH |
92 | struct __fat_dirent { |
93 | long d_ino; | |
94 | __kernel_off_t d_off; | |
95 | unsigned short d_reclen; | |
96 | char d_name[256]; /* We must not include limits.h! */ | |
97 | }; | |
98 | ||
1da177e4 LT |
99 | /* |
100 | * ioctl commands | |
101 | */ | |
4596c8aa OH |
102 | #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct __fat_dirent[2]) |
103 | #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct __fat_dirent[2]) | |
1da177e4 LT |
104 | /* <linux/videotext.h> has used 0x72 ('r') in collision, so skip a few */ |
105 | #define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32) | |
106 | #define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32) | |
107 | ||
1da177e4 LT |
108 | struct fat_boot_sector { |
109 | __u8 ignored[3]; /* Boot strap short or near jump */ | |
110 | __u8 system_id[8]; /* Name - can be used to special case | |
111 | partition manager volumes */ | |
112 | __u8 sector_size[2]; /* bytes per logical sector */ | |
113 | __u8 sec_per_clus; /* sectors/cluster */ | |
114 | __le16 reserved; /* reserved sectors */ | |
115 | __u8 fats; /* number of FATs */ | |
116 | __u8 dir_entries[2]; /* root directory entries */ | |
117 | __u8 sectors[2]; /* number of sectors */ | |
118 | __u8 media; /* media code */ | |
119 | __le16 fat_length; /* sectors/FAT */ | |
120 | __le16 secs_track; /* sectors per track */ | |
121 | __le16 heads; /* number of heads */ | |
122 | __le32 hidden; /* hidden sectors (unused) */ | |
123 | __le32 total_sect; /* number of sectors (if sectors == 0) */ | |
124 | ||
125 | /* The following fields are only used by FAT32 */ | |
126 | __le32 fat32_length; /* sectors/FAT */ | |
127 | __le16 flags; /* bit 8: fat mirroring, low 4: active fat */ | |
128 | __u8 version[2]; /* major, minor filesystem version */ | |
129 | __le32 root_cluster; /* first cluster in root directory */ | |
130 | __le16 info_sector; /* filesystem info sector */ | |
131 | __le16 backup_boot; /* backup boot sector */ | |
132 | __le16 reserved2[6]; /* Unused */ | |
133 | }; | |
134 | ||
135 | struct fat_boot_fsinfo { | |
136 | __le32 signature1; /* 0x41615252L */ | |
137 | __le32 reserved1[120]; /* Nothing as far as I can tell */ | |
138 | __le32 signature2; /* 0x61417272L */ | |
139 | __le32 free_clusters; /* Free cluster count. -1 if unknown */ | |
140 | __le32 next_cluster; /* Most recently allocated cluster */ | |
141 | __le32 reserved2[4]; | |
142 | }; | |
143 | ||
144 | struct msdos_dir_entry { | |
9aacd599 | 145 | __u8 name[MSDOS_NAME];/* name and extension */ |
1da177e4 LT |
146 | __u8 attr; /* attribute bits */ |
147 | __u8 lcase; /* Case for base and extension */ | |
148 | __u8 ctime_cs; /* Creation time, centiseconds (0-199) */ | |
149 | __le16 ctime; /* Creation time */ | |
150 | __le16 cdate; /* Creation date */ | |
151 | __le16 adate; /* Last access date */ | |
152 | __le16 starthi; /* High 16 bits of cluster in FAT32 */ | |
153 | __le16 time,date,start;/* time, date and first cluster */ | |
154 | __le32 size; /* file size (in bytes) */ | |
155 | }; | |
156 | ||
157 | /* Up to 13 characters of the name */ | |
158 | struct msdos_dir_slot { | |
159 | __u8 id; /* sequence number for slot */ | |
160 | __u8 name0_4[10]; /* first 5 characters in name */ | |
161 | __u8 attr; /* attribute byte */ | |
162 | __u8 reserved; /* always 0 */ | |
163 | __u8 alias_checksum; /* checksum for 8.3 alias */ | |
164 | __u8 name5_10[12]; /* 6 more characters in name */ | |
165 | __le16 start; /* starting cluster number, 0 in long slots */ | |
166 | __u8 name11_12[4]; /* last 2 characters in name */ | |
167 | }; | |
168 | ||
1da177e4 LT |
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> | |
6b9438e1 | 175 | #include <linux/mutex.h> |
1da177e4 | 176 | |
4596c8aa OH |
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 | ||
1da177e4 LT |
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 */ | |
1ae43f82 | 195 | unsigned short allow_utime;/* permission for setting the [am]time */ |
1da177e4 LT |
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 */ | |
4de151d8 | 201 | utf8:1, /* Use of UTF-8 character set (Default) */ |
1da177e4 LT |
202 | unicode_xlate:1, /* create escape sequences for unhandled Unicode */ |
203 | numtail:1, /* Does first alias have a numeric '~1' type tail? */ | |
ae78bf9c | 204 | flush:1, /* write things quickly */ |
28ec039c | 205 | nocase:1, /* Does this need case conversion? 0=need case conversion*/ |
b271e067 JP |
206 | usefree:1, /* Use free_clusters for FAT32 */ |
207 | tz_utc:1; /* Filesystem timestamps are in UTC */ | |
1da177e4 LT |
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 */ | |
6b9438e1 | 230 | struct mutex fat_lock; |
1da177e4 LT |
231 | unsigned int prev_free; /* previously allocated cluster number */ |
232 | unsigned int free_clusters; /* -1 if undefined */ | |
606e423e | 233 | unsigned int free_clus_valid; /* is free_clusters valid? */ |
1da177e4 LT |
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 */ | |
c5ef1c42 | 237 | const void *dir_ops; /* Opaque; default directory operations */ |
1da177e4 LT |
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 | ||
4596c8aa OH |
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 | ||
1da177e4 LT |
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 | ||
451cbaa1 OH |
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 | ||
1da177e4 LT |
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 | ||
f751aa12 AB |
338 | /* media of boot sector */ |
339 | static inline int fat_valid_media(u8 media) | |
340 | { | |
341 | return 0xf8 <= media || media == 0xf0; | |
342 | } | |
343 | ||
1da177e4 LT |
344 | /* fat/cache.c */ |
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); | |
e5174baa OH |
348 | extern int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys, |
349 | unsigned long *mapped_blocks); | |
1da177e4 LT |
350 | |
351 | /* fat/dir.c */ | |
4b6f5d20 | 352 | extern const struct file_operations fat_dir_operations; |
1da177e4 LT |
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); | |
4b6f5d20 | 415 | extern const struct file_operations fat_file_operations; |
c5ef1c42 | 416 | extern const struct inode_operations fat_file_inode_operations; |
1278fdd3 | 417 | extern int fat_setattr(struct dentry * dentry, struct iattr * attr); |
1da177e4 | 418 | extern void fat_truncate(struct inode *inode); |
da63fc7c OH |
419 | extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry, |
420 | struct kstat *stat); | |
1da177e4 LT |
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, | |
c5ef1c42 | 430 | const struct inode_operations *fs_dir_inode_ops, int isvfat); |
1da177e4 | 431 | |
ae78bf9c CM |
432 | extern int fat_flush_inodes(struct super_block *sb, struct inode *i1, |
433 | struct inode *i2); | |
1da177e4 LT |
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); | |
b271e067 JP |
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); | |
1da177e4 LT |
441 | extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs); |
442 | ||
a28af471 AB |
443 | int fat_cache_init(void); |
444 | void fat_cache_destroy(void); | |
445 | ||
1da177e4 LT |
446 | #endif /* __KERNEL__ */ |
447 | ||
448 | #endif |