RTEMS 6.1-rc2
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fat.h
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1
12/*
13 *
14 * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
15 * Author: Eugeny S. Mints <Eugeny.Mints@oktet.ru>
16 *
17 * The license and distribution terms for this file may be
18 * found in the file LICENSE in this distribution or at
19 * http://www.rtems.org/license/LICENSE.
20 */
21
22#ifndef __DOSFS_FAT_H__
23#define __DOSFS_FAT_H__
24
25#include <sys/param.h>
26#include <sys/endian.h>
27#include <string.h>
28
29#include <rtems/seterr.h>
30
31#include <errno.h>
32#include <rtems/bdbuf.h>
33
34#ifdef __cplusplus
35extern "C" {
36#endif
37
44#ifndef RC_OK
45#define RC_OK 0
46#endif
47
48/*
49 * Remember that all FAT file system on disk data structure is
50 * "little endian"!
51 * (derived from linux)
52 */
53/*
54 * Conversion from and to little-endian byte order. (no-op on i386/i486)
55 *
56 * Naming: Ca_b_c, where a: F = from, T = to, b: LE = little-endian,
57 * BE = big-endian, c: W = word (16 bits), L = longword (32 bits)
58 */
59#define CF_LE_W(v) le16toh(v)
60#define CF_LE_L(v) le32toh(v)
61#define CT_LE_W(v) htole16(v)
62#define CT_LE_L(v) htole32(v)
63
64#define FAT_HASH_SIZE 2
65#define FAT_HASH_MODULE FAT_HASH_SIZE
66
67
68#define FAT_SECTOR512_SIZE 512 /* sector size (bytes) */
69#define FAT_SECTOR512_BITS 9 /* log2(SECTOR_SIZE) */
70
71/* maximum + 1 number of clusters for FAT12 */
72#define FAT_FAT12_MAX_CLN 4085
73
74/* maximum + 1 number of clusters for FAT16 */
75#define FAT_FAT16_MAX_CLN 65525
76
77#define FAT_FAT12 0x01
78#define FAT_FAT16 0x02
79#define FAT_FAT32 0x04
80
81#define FAT_UNDEFINED_VALUE (uint32_t)0xFFFFFFFF
82
83#define FAT_FAT12_EOC 0x0FF8
84#define FAT_FAT16_EOC 0xFFF8
85#define FAT_FAT32_EOC (uint32_t)0x0FFFFFF8
86
87#define FAT_FAT12_FREE 0x0000
88#define FAT_FAT16_FREE 0x0000
89#define FAT_FAT32_FREE 0x00000000
90
91#define FAT_GENFAT_EOC (uint32_t)0xFFFFFFFF
92#define FAT_GENFAT_FREE (uint32_t)0x00000000
93
94#define FAT_FAT12_SHIFT 0x04
95
96#define FAT_FAT12_MASK 0x00000FFF
97#define FAT_FAT16_MASK 0x0000FFFF
98#define FAT_FAT32_MASK (uint32_t)0x0FFFFFFF
99
100#define FAT_MAX_BPB_SIZE 90
101#define FAT_TOTAL_MBR_SIZE 512
102
103/* size of useful information in FSInfo sector */
104#define FAT_USEFUL_INFO_SIZE 12
105
106#define FAT_GET_ADDR(x, ofs) ((uint8_t *)(x) + (ofs))
107
108#define FAT_GET_VAL8(x, ofs) (uint8_t)(*((uint8_t *)(x) + (ofs)))
109
110#define FAT_GET_VAL16(x, ofs) \
111 (uint16_t)( (*((uint8_t *)(x) + (ofs))) | \
112 ((*((uint8_t *)(x) + (ofs) + 1)) << 8) )
113
114#define FAT_GET_VAL32(x, ofs) \
115 (uint32_t)( (uint32_t)(*((uint8_t *)(x) + (ofs))) | \
116 ((uint32_t)(*((uint8_t *)(x) + (ofs) + 1)) << 8) | \
117 ((uint32_t)(*((uint8_t *)(x) + (ofs) + 2)) << 16) | \
118 ((uint32_t)(*((uint8_t *)(x) + (ofs) + 3)) << 24) )
119
120#define FAT_SET_VAL8(x, ofs,val) \
121 (*((uint8_t *)(x)+(ofs))=(uint8_t)(val))
122
123#define FAT_SET_VAL16(x, ofs,val) do { \
124 FAT_SET_VAL8((x),(ofs),(val)); \
125 FAT_SET_VAL8((x),(ofs)+1,(val)>>8);\
126 } while (0)
127
128#define FAT_SET_VAL32(x, ofs,val) do { \
129 uint32_t val1 = val; \
130 FAT_SET_VAL16((x),(ofs),(val1)&0xffff);\
131 FAT_SET_VAL16((x),(ofs)+2,(val1)>>16);\
132 } while (0)
133
134/* macros to access boot sector fields */
135#define FAT_GET_BR_JMPBOOT(x) FAT_GET_VAL8( x, 0)
136#define FAT_SET_BR_JMPBOOT(x,val) FAT_SET_VAL8( x, 0,val)
137
138#define FAT_GET_ADDR_BR_OEMNAME(x) FAT_GET_ADDR( x, 3)
139#define FAT_BR_OEMNAME_SIZE (8)
140
141#define FAT_GET_BR_BYTES_PER_SECTOR(x) FAT_GET_VAL16(x, 11)
142#define FAT_SET_BR_BYTES_PER_SECTOR(x,val) FAT_SET_VAL16(x, 11,val)
143
144#define FAT_GET_BR_SECTORS_PER_CLUSTER(x) FAT_GET_VAL8( x, 13)
145#define FAT_SET_BR_SECTORS_PER_CLUSTER(x,val)FAT_SET_VAL8( x, 13,val)
146
147#define FAT_GET_BR_RESERVED_SECTORS_NUM(x) FAT_GET_VAL16(x, 14)
148#define FAT_SET_BR_RESERVED_SECTORS_NUM(x,val) FAT_SET_VAL16(x, 14,val)
149
150#define FAT_GET_BR_FAT_NUM(x) FAT_GET_VAL8( x, 16)
151#define FAT_SET_BR_FAT_NUM(x,val) FAT_SET_VAL8( x, 16,val)
152
153#define FAT_GET_BR_FILES_PER_ROOT_DIR(x) FAT_GET_VAL16(x, 17)
154#define FAT_SET_BR_FILES_PER_ROOT_DIR(x,val) FAT_SET_VAL16(x, 17,val)
155
156#define FAT_GET_BR_TOTAL_SECTORS_NUM16(x) FAT_GET_VAL16(x, 19)
157#define FAT_SET_BR_TOTAL_SECTORS_NUM16(x,val)FAT_SET_VAL16(x, 19,val)
158
159#define FAT_GET_BR_MEDIA(x) FAT_GET_VAL8( x, 21)
160#define FAT_SET_BR_MEDIA(x,val) FAT_SET_VAL8( x, 21,val)
161
162#define FAT_GET_BR_SECTORS_PER_FAT(x) FAT_GET_VAL16(x, 22)
163#define FAT_SET_BR_SECTORS_PER_FAT(x,val) FAT_SET_VAL16(x, 22,val)
164
165#define FAT_GET_BR_SECTORS_PER_TRACK(x) FAT_GET_VAL16(x, 24)
166#define FAT_SET_BR_SECTORS_PER_TRACK(x,val) FAT_SET_VAL16(x, 24,val)
167
168#define FAT_GET_BR_NUMBER_OF_HEADS(x) FAT_GET_VAL16(x, 26)
169#define FAT_SET_BR_NUMBER_OF_HEADS(x,val) FAT_SET_VAL16(x, 26,val)
170
171#define FAT_GET_BR_HIDDEN_SECTORS(x) FAT_GET_VAL32(x, 28)
172#define FAT_SET_BR_HIDDEN_SECTORS(x,val) FAT_SET_VAL32(x, 28,val)
173
174#define FAT_GET_BR_TOTAL_SECTORS_NUM32(x) FAT_GET_VAL32(x, 32)
175#define FAT_SET_BR_TOTAL_SECTORS_NUM32(x,val) FAT_SET_VAL32(x, 32,val)
176 /* --- start of FAT12/16 specific fields */
177#define FAT_GET_BR_DRVNUM(x) FAT_GET_VAL8( x, 36)
178#define FAT_SET_BR_DRVNUM(x,val) FAT_SET_VAL8( x, 36,val)
179
180#define FAT_GET_BR_RSVD1(x) FAT_GET_VAL8( x, 37)
181#define FAT_SET_BR_RSVD1(x,val) FAT_SET_VAL8( x, 37,val)
182
183#define FAT_GET_BR_BOOTSIG(x) FAT_GET_VAL8( x, 38)
184#define FAT_SET_BR_BOOTSIG(x,val) FAT_SET_VAL8( x, 38,val)
185#define FAT_BR_BOOTSIG_VAL (0x29)
186
187#define FAT_GET_BR_VOLID(x) FAT_GET_VAL32(x, 39)
188#define FAT_SET_BR_VOLID(x,val) FAT_SET_VAL32(x, 39,val)
189
190#define FAT_GET_ADDR_BR_VOLLAB(x) FAT_GET_ADDR (x, 43)
191#define FAT_BR_VOLLAB_SIZE (11)
192
193#define FAT_GET_ADDR_BR_FILSYSTYPE(x) FAT_GET_ADDR (x, 54)
194#define FAT_BR_FILSYSTYPE_SIZE (8)
195 /* --- end of FAT12/16 specific fields */
196 /* --- start of FAT32 specific fields */
197#define FAT_GET_BR_SECTORS_PER_FAT32(x) FAT_GET_VAL32(x, 36)
198#define FAT_SET_BR_SECTORS_PER_FAT32(x,val) FAT_SET_VAL32(x, 36,val)
199
200#define FAT_GET_BR_EXT_FLAGS(x) FAT_GET_VAL16(x, 40)
201#define FAT_SET_BR_EXT_FLAGS(x,val) FAT_SET_VAL16(x, 40,val)
202
203#define FAT_GET_BR_FSVER(x) FAT_GET_VAL16(x, 42)
204#define FAT_SET_BR_FSVER(x,val) FAT_SET_VAL16(x, 42,val)
205
206#define FAT_GET_BR_FAT32_ROOT_CLUSTER(x) FAT_GET_VAL32(x, 44)
207#define FAT_SET_BR_FAT32_ROOT_CLUSTER(x,val) FAT_SET_VAL32(x, 44,val)
208
209#define FAT_GET_BR_FAT32_FS_INFO_SECTOR(x) FAT_GET_VAL16(x, 48)
210#define FAT_SET_BR_FAT32_FS_INFO_SECTOR(x,val) FAT_SET_VAL16(x, 48,val)
211
212#define FAT_GET_BR_FAT32_BK_BOOT_SECTOR(x) FAT_GET_VAL16(x, 50)
213#define FAT_SET_BR_FAT32_BK_BOOT_SECTOR(x,val) FAT_SET_VAL16(x, 50,val)
214
215#define FAT_GET_ADDR_BR_FAT32_RESERVED(x) FAT_GET_ADDR (x, 52)
216#define FAT_BR_FAT32_RESERVED_SIZE (12)
217
218#define FAT_GET_BR_FAT32_DRVNUM(x) FAT_GET_VAL8( x, 64)
219#define FAT_SET_BR_FAT32_DRVNUM(x,val) FAT_SET_VAL8( x, 64,val)
220
221#define FAT_GET_BR_FAT32_RSVD1(x) FAT_GET_VAL8( x, 65)
222#define FAT_SET_BR_FAT32_RSVD1(x,val) FAT_SET_VAL8( x, 65,val)
223
224#define FAT_GET_BR_FAT32_BOOTSIG(x) FAT_GET_VAL8( x, 66)
225#define FAT_SET_BR_FAT32_BOOTSIG(x,val) FAT_SET_VAL8( x, 66,val)
226#define FAT_BR_FAT32_BOOTSIG_VAL (0x29)
227
228#define FAT_GET_BR_FAT32_VOLID(x) FAT_GET_VAL32(x, 67)
229#define FAT_SET_BR_FAT32_VOLID(x,val) FAT_SET_VAL32(x, 67,val)
230
231#define FAT_GET_ADDR_BR_FAT32_VOLLAB(x) FAT_GET_ADDR (x, 71)
232#define FAT_BR_FAT32_VOLLAB_SIZE (11)
233
234#define FAT_GET_ADDR_BR_FAT32_FILSYSTYPE(x) FAT_GET_ADDR (x, 82)
235#define FAT_BR_FAT32_FILSYSTYPE_SIZE (8)
236 /* --- end of FAT32 specific fields */
237
238#define FAT_GET_BR_SIGNATURE(x) FAT_GET_VAL16(x,510)
239#define FAT_SET_BR_SIGNATURE(x,val) FAT_SET_VAL16(x,510,val)
240#define FAT_BR_SIGNATURE_VAL (0xAA55)
241
242 /*
243 * FAT32 FSINFO description
244 */
245#define FAT_GET_FSINFO_LEAD_SIGNATURE(x) FAT_GET_VAL32(x, 0)
246#define FAT_SET_FSINFO_LEAD_SIGNATURE(x,val) FAT_SET_VAL32(x, 0,val)
247#define FAT_FSINFO_LEAD_SIGNATURE_VALUE (0x41615252)
248
249#define FAT_GET_FSINFO_STRUC_SIGNATURE(x) FAT_GET_VAL32(x,484)
250#define FAT_SET_FSINFO_STRUC_SIGNATURE(x,val) FAT_SET_VAL32(x,484,val)
251#define FAT_FSINFO_STRUC_SIGNATURE_VALUE (0x61417272)
252
253#define FAT_GET_FSINFO_TRAIL_SIGNATURE(x) FAT_GET_VAL32(x,508)
254#define FAT_SET_FSINFO_TRAIL_SIGNATURE(x,val) FAT_SET_VAL32(x,508,val)
255#define FAT_FSINFO_TRAIL_SIGNATURE_VALUE (0xAA550000)
256/*
257 * I read FSInfo sector from offset 484 to access the information, so offsets
258 * of these fields a relative
259 */
260#define FAT_GET_FSINFO_FREE_CLUSTER_COUNT(x) FAT_GET_VAL32(x, 4)
261#define FAT_SET_FSINFO_FREE_CLUSTER_COUNT(x,val) FAT_SET_VAL32(x, 4,val)
262#define FAT_GET_FSINFO_NEXT_FREE_CLUSTER(x) FAT_GET_VAL32(x, 8)
263#define FAT_SET_FSINFO_NEXT_FREE_CLUSTER(x,val) FAT_SET_VAL32(x, 8,val)
264
265#define FAT_FSI_INFO 484
266#define FAT_FSINFO_STRUCT_OFFSET 488
267#define FAT_FSINFO_FREE_CLUSTER_COUNT_OFFSET (FAT_FSINFO_STRUCT_OFFSET+0)
268
269#define FAT_FSINFO_NEXT_FREE_CLUSTER_OFFSET (FAT_FSINFO_STRUCT_OFFSET+4)
270
271#define FAT_RSRVD_CLN 0x02
272
273#define FAT_FSI_LEADSIG_SIZE 0x04
274
275#define FAT_TOTAL_FSINFO_SIZE 512
276
277#define MS_BYTES_PER_CLUSTER_LIMIT 0x10000 /* 64K */
278#define MS_BYTES_PER_CLUSTER_LIMIT_FAT12 0x1000 /* 4K */
279
280#define FAT_BR_EXT_FLAGS_MIRROR 0x0080
281
282#define FAT_BR_EXT_FLAGS_FAT_NUM 0x000F
283
284#define FAT_BR_MEDIA_FIXED 0xf8
285
286#define FAT_DIRENTRY_SIZE 32
287
288#define FAT_DIRENTRIES_PER_SEC512 16
289
290/*
291 * Volume descriptor
292 * Description of the volume the FAT filesystem is located on - generally
293 * the fields of the structure correspond to Boot Sector and BPB Structure
294 * fields
295 */
296typedef struct fat_vol_s
297{
298 uint16_t bps; /* bytes per sector */
299 uint8_t sec_log2; /* log2 of bps */
300 uint8_t sec_mul; /* log2 of 512bts sectors number per sector */
301 uint8_t spc; /* sectors per cluster */
302 uint8_t spc_log2; /* log2 of spc */
303 uint32_t bpc; /* bytes per cluster */
304 uint8_t bpc_log2; /* log2 of bytes per cluster */
305 uint8_t sectors_per_block; /* sectors per bdbuf block */
306 uint32_t bytes_per_block; /* number of bytes for the bduf block device handling */
307 uint8_t bytes_per_block_log2; /* log2 of bytes_per_block */
308 uint8_t fats; /* number of FATs */
309 uint8_t type; /* FAT type */
310 uint32_t mask;
311 uint32_t eoc_val;
312 uint16_t fat_loc; /* FAT start */
313 uint32_t fat_length; /* sectors per FAT */
314 uint32_t rdir_loc; /* root directory start */
315 uint16_t rdir_entrs; /* files per root directory */
316 uint32_t rdir_secs; /* sectors per root directory */
317 uint32_t rdir_size; /* root directory size in bytes */
318 uint32_t tot_secs; /* total count of sectors */
319 uint32_t data_fsec; /* first data sector */
320 uint32_t data_cls; /* count of data clusters */
321 uint32_t rdir_cl; /* first cluster of the root directory */
322 uint16_t info_sec; /* FSInfo Sector Structure location */
323 uint32_t free_cls; /* last known free clusters count */
324 uint32_t free_cls_in_fs_info; /* last known free clusters count
325 in FS info sector */
326 uint32_t next_cl; /* next free cluster number */
327 uint32_t next_cl_in_fs_info; /* next free cluster number in FS
328 info sector */
329 uint8_t mirror; /* mirroring enabla/disable */
330 uint32_t afat_loc; /* active FAT location */
331 uint8_t afat; /* the number of active FAT */
332 int fd; /* the disk device file descriptor */
333 rtems_disk_device *dd; /* disk device (see libblock) */
334 dev_t dev; /* device identifier of disk */
335 void *private_data; /* reserved */
336} fat_vol_t;
337
338
339typedef struct fat_cache_s
340{
341 uint32_t blk_num;
342 bool modified;
343 uint8_t state;
344 rtems_bdbuf_buffer *buf;
345} fat_cache_t;
346
347/*
348 * This structure identifies the instance of the filesystem on the FAT
349 * ("fat-file") level.
350 */
351typedef struct fat_fs_info_s
352{
353 fat_vol_t vol; /* volume descriptor */
354 rtems_chain_control *vhash; /* "vhash" of fat-file descriptors */
355 rtems_chain_control *rhash; /* "rhash" of fat-file descriptors */
356 char *uino; /* array of unique ino numbers */
357 uint32_t index;
358 uint32_t uino_pool_size; /* size */
359 uint32_t uino_base;
360 fat_cache_t c; /* cache */
361 uint8_t *sec_buf; /* just placeholder for anything */
362} fat_fs_info_t;
363
364/*
365 * FAT position is a the cluster and the offset into the
366 * cluster.
367 */
368typedef struct fat_pos_s
369{
370 uint32_t cln;
371 uint32_t ofs;
372} fat_pos_t;
373
374/*
375 * If the name we looking for is file we store not only first data cluster
376 * number, but and cluster number and offset for directory entry for this
377 * name. We also add the LFN start offset so we can delete it the whole
378 * file name. We can then use this to delete the file.
379 */
380typedef struct fat_dir_pos_s
381{
382 fat_pos_t sname;
383 fat_pos_t lname;
384} fat_dir_pos_t;
385
386/*
387 * Set the long name entries to this value for a short file name.
388 */
389#define FAT_FILE_SHORT_NAME (0xffffffff)
390
391#define FAT_FAT_OFFSET(fat_type, cln) \
392 ((fat_type) & FAT_FAT12 ? ((cln) + ((cln) >> 1)) : \
393 (fat_type) & FAT_FAT16 ? ((cln) << 1) : \
394 ((cln) << 2))
395
396#define FAT_CLUSTER_IS_ODD(n) ((n) & 0x0001)
397
398#define FAT12_SHIFT 0x4 /* half of a byte */
399
400/* initial size of array of unique ino */
401#define FAT_UINO_POOL_INIT_SIZE 0x100
402
403/* cache support */
404#define FAT_CACHE_EMPTY 0x0
405#define FAT_CACHE_ACTUAL 0x1
406
407#define FAT_OP_TYPE_READ 0x1
408#define FAT_OP_TYPE_GET 0x2
409
410static inline void
411fat_dir_pos_init(
412 fat_dir_pos_t *dir_pos
413 )
414{
415 dir_pos->sname.cln = 0;
416 dir_pos->sname.ofs = 0;
417 dir_pos->lname.cln = FAT_FILE_SHORT_NAME;
418 dir_pos->lname.ofs = FAT_FILE_SHORT_NAME;
419}
420
421static inline uint32_t
422fat_cluster_num_to_sector_num(
423 const fat_fs_info_t *fs_info,
424 uint32_t cln
425 )
426{
427 if ( (cln == 0) && (fs_info->vol.type & (FAT_FAT12 | FAT_FAT16)) )
428 return fs_info->vol.rdir_loc;
429
430 return (((cln - FAT_RSRVD_CLN) << fs_info->vol.spc_log2) +
431 fs_info->vol.data_fsec);
432}
433
434static inline uint32_t
435fat_cluster_num_to_sector512_num(
436 const fat_fs_info_t *fs_info,
437 uint32_t cln
438 )
439{
440 if (cln == 1)
441 return 1;
442
443 return (fat_cluster_num_to_sector_num(fs_info, cln) <<
444 fs_info->vol.sec_mul);
445}
446
447static inline uint32_t
448 fat_block_num_to_cluster_num (const fat_fs_info_t *fs_info,
449 const uint32_t block_number)
450{
451 return block_number >> (fs_info->vol.bpc_log2 - fs_info->vol.bytes_per_block_log2);
452}
453
454static inline uint32_t
455 fat_block_num_to_sector_num (const fat_fs_info_t *fs_info,
456 const uint32_t block_number)
457{
458 return block_number << (fs_info->vol.bytes_per_block_log2 - fs_info->vol.sec_log2);
459}
460
461static inline uint32_t
462 fat_sector_num_to_block_num (const fat_fs_info_t *fs_info,
463 const uint32_t sector_number)
464{
465 return sector_number >> (fs_info->vol.bytes_per_block_log2 - fs_info->vol.sec_log2);
466}
467
468static inline uint32_t
469 fat_sector_offset_to_block_offset (const fat_fs_info_t *fs_info,
470 const uint32_t sector,
471 const uint32_t sector_offset)
472{
473 return sector_offset +
474 ((sector -
475 fat_block_num_to_sector_num (fs_info,
476 fat_sector_num_to_block_num (fs_info, sector)))
477 << fs_info->vol.sec_log2);
478}
479
480static inline void
481fat_buf_mark_modified(fat_fs_info_t *fs_info)
482{
483 fs_info->c.modified = true;
484}
485
486int
487fat_buf_access(fat_fs_info_t *fs_info,
488 uint32_t sec_num,
489 int op_type,
490 uint8_t **sec_buf);
491
492int
493fat_buf_release(fat_fs_info_t *fs_info);
494
495ssize_t
496_fat_block_read(fat_fs_info_t *fs_info,
497 uint32_t start,
498 uint32_t offset,
499 uint32_t count,
500 void *buff);
501
502void
503fat_block_peek(fat_fs_info_t *fs_info,
504 const uint32_t blk,
505 const uint32_t blk_cnt);
506
507ssize_t
508fat_cluster_write(fat_fs_info_t *fs_info,
509 uint32_t start_cln,
510 uint32_t offset,
511 uint32_t count,
512 const void *buff);
513
514ssize_t
515fat_sector_write(fat_fs_info_t *fs_info,
516 uint32_t start,
517 uint32_t offset,
518 uint32_t count,
519 const void *buff);
520
521ssize_t
522fat_cluster_set(fat_fs_info_t *fs_info,
523 uint32_t start,
524 uint32_t offset,
525 uint32_t count,
526 uint8_t pattern);
527
528
529int
530fat_init_volume_info(fat_fs_info_t *fs_info, const char *device);
531
532int
533fat_init_clusters_chain(fat_fs_info_t *fs_info,
534 uint32_t start_cln);
535
536int
537fat_shutdown_drive(fat_fs_info_t *fs_info);
538
539
540uint32_t
541fat_get_unique_ino(fat_fs_info_t *fs_info);
542
543bool
544fat_ino_is_unique(fat_fs_info_t *fs_info,
545 uint32_t ino);
546
547void
548fat_free_unique_ino(fat_fs_info_t *fs_info,
549 uint32_t ino);
550
551int
552fat_sync(fat_fs_info_t *fs_info);
553
556#ifdef __cplusplus
557}
558#endif
559#endif /* __DOSFS_FAT_H__ */
bdbuf.h
Block Device Buffer Management.
seterr.h
This header file defines macros to set errno and return minus one.
fat_cache_s
Definition: fat.h:340
fat_dir_pos_s
Definition: fat.h:381
fat_fs_info_s
Definition: fat.h:352
fat_pos_s
Definition: fat.h:369
fat_vol_s
Definition: fat.h:297
rtems_bdbuf_buffer
Definition: bdbuf.h:309
rtems_disk_device
Description of a disk device (logical and physical disks).
Definition: diskdevs.h:177
endian.h
This header file provides interfaces of the system endianness support.
Chain_Control
This union represents a chain control block.
Definition: chain.h:96
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