1 | /** |
---|
2 | * @file |
---|
3 | * |
---|
4 | * @ingroup rtems_bdpart |
---|
5 | * |
---|
6 | * Block device partition management. |
---|
7 | */ |
---|
8 | |
---|
9 | /* |
---|
10 | * Copyright (c) 2009 |
---|
11 | * embedded brains GmbH |
---|
12 | * Obere Lagerstr. 30 |
---|
13 | * D-82178 Puchheim |
---|
14 | * Germany |
---|
15 | * <rtems@embedded-brains.de> |
---|
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.com/license/LICENSE. |
---|
20 | */ |
---|
21 | |
---|
22 | #include <inttypes.h> |
---|
23 | #include <stdio.h> |
---|
24 | #include <stdlib.h> |
---|
25 | #include <string.h> |
---|
26 | #include <unistd.h> |
---|
27 | #include <sys/stat.h> |
---|
28 | #include <sys/types.h> |
---|
29 | |
---|
30 | #include <rtems/bdbuf.h> |
---|
31 | #include <rtems/bdpart.h> |
---|
32 | #include <rtems/dosfs.h> |
---|
33 | #include <rtems/endian.h> |
---|
34 | #include <rtems/fsmount.h> |
---|
35 | |
---|
36 | #define RTEMS_BDPART_MBR_PARTITION_TYPE( type) \ |
---|
37 | { \ |
---|
38 | (type), 0xa2U, 0x2eU, 0x38U, \ |
---|
39 | 0x38U, 0xb5U, 0xdeU, 0x11U, \ |
---|
40 | 0xbcU, 0x13U, 0x00U, 0x1dU, \ |
---|
41 | 0x09U, 0xb0U, 0x5fU, 0xa4U \ |
---|
42 | } |
---|
43 | |
---|
44 | #define RTEMS_BDPART_BLOCK_SIZE 512 |
---|
45 | |
---|
46 | #define RTEMS_BDPART_MBR_CYLINDER_SIZE 63 |
---|
47 | |
---|
48 | #define RTEMS_BDPART_MBR_TABLE_ENTRY_SIZE 16 |
---|
49 | |
---|
50 | #define RTEMS_BDPART_MBR_OFFSET_TABLE_0 446 |
---|
51 | |
---|
52 | #define RTEMS_BDPART_MBR_OFFSET_TABLE_1 \ |
---|
53 | (RTEMS_BDPART_MBR_OFFSET_TABLE_0 + RTEMS_BDPART_MBR_TABLE_ENTRY_SIZE) |
---|
54 | |
---|
55 | #define RTEMS_BDPART_MBR_OFFSET_DISK_ID 440 |
---|
56 | |
---|
57 | #define RTEMS_BDPART_MBR_OFFSET_SIGNATURE_0 510 |
---|
58 | |
---|
59 | #define RTEMS_BDPART_MBR_OFFSET_SIGNATURE_1 511 |
---|
60 | |
---|
61 | #define RTEMS_BDPART_MBR_SIGNATURE_0 0x55U |
---|
62 | |
---|
63 | #define RTEMS_BDPART_MBR_SIGNATURE_1 0xaaU |
---|
64 | |
---|
65 | #define RTEMS_BDPART_MBR_OFFSET_BEGIN 8 |
---|
66 | |
---|
67 | #define RTEMS_BDPART_MBR_OFFSET_SIZE 12 |
---|
68 | |
---|
69 | #define RTEMS_BDPART_MBR_OFFSET_TYPE 4 |
---|
70 | |
---|
71 | #define RTEMS_BDPART_MBR_OFFSET_FLAGS 0 |
---|
72 | |
---|
73 | #define RTEMS_BDPART_PARTITION_READ_MAX 32 |
---|
74 | |
---|
75 | static const uuid_t RTEMS_BDPART_MBR_MASTER_TYPE = |
---|
76 | RTEMS_BDPART_MBR_PARTITION_TYPE( RTEMS_BDPART_MBR_EMPTY); |
---|
77 | |
---|
78 | void rtems_bdpart_to_partition_type( uint8_t mbr_type, uuid_t type) |
---|
79 | { |
---|
80 | type [0] = mbr_type; |
---|
81 | memcpy( type + 1, RTEMS_BDPART_MBR_MASTER_TYPE + 1, sizeof( uuid_t) - 1); |
---|
82 | } |
---|
83 | |
---|
84 | static uint8_t rtems_bdpart_mbr_partition_type( |
---|
85 | const uuid_t type |
---|
86 | ) |
---|
87 | { |
---|
88 | return type [0]; |
---|
89 | } |
---|
90 | |
---|
91 | bool rtems_bdpart_to_mbr_partition_type( |
---|
92 | const uuid_t type, |
---|
93 | uint8_t *mbr_type |
---|
94 | ) |
---|
95 | { |
---|
96 | *mbr_type = rtems_bdpart_mbr_partition_type( type); |
---|
97 | |
---|
98 | return memcmp( |
---|
99 | type + 1, |
---|
100 | RTEMS_BDPART_MBR_MASTER_TYPE + 1, |
---|
101 | sizeof( uuid_t) - 1 |
---|
102 | ) == 0; |
---|
103 | } |
---|
104 | |
---|
105 | static void rtems_bdpart_type_to_string( |
---|
106 | const uuid_t type, |
---|
107 | char str [37] |
---|
108 | ) |
---|
109 | { |
---|
110 | uuid_unparse_lower( type, str); |
---|
111 | } |
---|
112 | |
---|
113 | /* |
---|
114 | * FIXME: This code should the deviceio interface and not the bdbug interface. |
---|
115 | */ |
---|
116 | static rtems_status_code rtems_bdpart_get_disk_data( |
---|
117 | const char *disk_name, |
---|
118 | dev_t *disk, |
---|
119 | rtems_blkdev_bnum *disk_end |
---|
120 | ) |
---|
121 | { |
---|
122 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
123 | int rv = 0; |
---|
124 | rtems_blkdev_bnum disk_begin = 0; |
---|
125 | rtems_blkdev_bnum block_size = 0; |
---|
126 | rtems_disk_device *dd = NULL; |
---|
127 | struct stat st; |
---|
128 | |
---|
129 | /* Get disk handle */ |
---|
130 | rv = stat( disk_name, &st); |
---|
131 | if (rv != 0) { |
---|
132 | return RTEMS_INVALID_NAME; |
---|
133 | } |
---|
134 | *disk = st.st_rdev; |
---|
135 | |
---|
136 | /* Get disk begin, end and block size */ |
---|
137 | dd = rtems_disk_obtain( *disk); |
---|
138 | if (dd == NULL) { |
---|
139 | return RTEMS_INVALID_NAME; |
---|
140 | } |
---|
141 | disk_begin = dd->start; |
---|
142 | *disk_end = dd->size; |
---|
143 | block_size = dd->block_size; |
---|
144 | sc = rtems_disk_release( dd); |
---|
145 | if (sc != RTEMS_SUCCESSFUL) { |
---|
146 | return sc; |
---|
147 | } |
---|
148 | |
---|
149 | /* Check block size */ |
---|
150 | if (block_size < RTEMS_BDPART_BLOCK_SIZE) { |
---|
151 | return RTEMS_IO_ERROR; |
---|
152 | } |
---|
153 | |
---|
154 | /* Check that we have do not have a logical disk */ |
---|
155 | if (disk_begin != 0) { |
---|
156 | return RTEMS_IO_ERROR; |
---|
157 | } |
---|
158 | |
---|
159 | return RTEMS_SUCCESSFUL; |
---|
160 | } |
---|
161 | |
---|
162 | static int rtems_bdpart_partition_compare( const void *aa, const void *bb) |
---|
163 | { |
---|
164 | const rtems_bdpart_partition *a = aa; |
---|
165 | const rtems_bdpart_partition *b = bb; |
---|
166 | |
---|
167 | if (a->begin < b->begin) { |
---|
168 | return -1; |
---|
169 | } else if (a->begin == b->begin) { |
---|
170 | return 0; |
---|
171 | } else { |
---|
172 | return 1; |
---|
173 | } |
---|
174 | } |
---|
175 | |
---|
176 | static bool rtems_bdpart_is_valid_record( const uint8_t *data) |
---|
177 | { |
---|
178 | return data [RTEMS_BDPART_MBR_OFFSET_SIGNATURE_0] |
---|
179 | == RTEMS_BDPART_MBR_SIGNATURE_0 |
---|
180 | && data [RTEMS_BDPART_MBR_OFFSET_SIGNATURE_1] |
---|
181 | == RTEMS_BDPART_MBR_SIGNATURE_1; |
---|
182 | } |
---|
183 | |
---|
184 | static rtems_blkdev_bnum rtems_bdpart_next_ebr( const uint8_t *data) |
---|
185 | { |
---|
186 | rtems_blkdev_bnum begin = |
---|
187 | rtems_uint32_from_little_endian( data + RTEMS_BDPART_MBR_OFFSET_BEGIN); |
---|
188 | uint8_t type = data [RTEMS_BDPART_MBR_OFFSET_TYPE]; |
---|
189 | |
---|
190 | if (type == RTEMS_BDPART_MBR_EXTENDED) { |
---|
191 | return begin; |
---|
192 | } else { |
---|
193 | return 0; |
---|
194 | } |
---|
195 | } |
---|
196 | |
---|
197 | static rtems_status_code rtems_bdpart_read_mbr_partition( |
---|
198 | const uint8_t *data, |
---|
199 | rtems_bdpart_partition **p, |
---|
200 | const rtems_bdpart_partition *p_end, |
---|
201 | rtems_blkdev_bnum *ep_begin |
---|
202 | ) |
---|
203 | { |
---|
204 | rtems_blkdev_bnum begin = |
---|
205 | rtems_uint32_from_little_endian( data + RTEMS_BDPART_MBR_OFFSET_BEGIN); |
---|
206 | rtems_blkdev_bnum size = |
---|
207 | rtems_uint32_from_little_endian( data + RTEMS_BDPART_MBR_OFFSET_SIZE); |
---|
208 | rtems_blkdev_bnum end = begin + size; |
---|
209 | uint8_t type = data [RTEMS_BDPART_MBR_OFFSET_TYPE]; |
---|
210 | |
---|
211 | if (type == RTEMS_BDPART_MBR_EMPTY) { |
---|
212 | return RTEMS_SUCCESSFUL; |
---|
213 | } else if (*p == p_end) { |
---|
214 | return RTEMS_TOO_MANY; |
---|
215 | } else if (begin >= end) { |
---|
216 | return RTEMS_IO_ERROR; |
---|
217 | } else if (type == RTEMS_BDPART_MBR_EXTENDED) { |
---|
218 | if (ep_begin != NULL) { |
---|
219 | *ep_begin = begin; |
---|
220 | } |
---|
221 | } else { |
---|
222 | /* Increment partition index */ |
---|
223 | ++(*p); |
---|
224 | |
---|
225 | /* Clear partition */ |
---|
226 | memset( *p, 0, sizeof( rtems_bdpart_partition)); |
---|
227 | |
---|
228 | /* Set values */ |
---|
229 | (*p)->begin = begin; |
---|
230 | (*p)->end = end; |
---|
231 | rtems_bdpart_to_partition_type( type, (*p)->type); |
---|
232 | (*p)->flags = data [RTEMS_BDPART_MBR_OFFSET_FLAGS]; |
---|
233 | } |
---|
234 | |
---|
235 | return RTEMS_SUCCESSFUL; |
---|
236 | } |
---|
237 | |
---|
238 | static void rtems_bdpart_write_mbr_partition( |
---|
239 | uint8_t *data, |
---|
240 | uint32_t begin, |
---|
241 | uint32_t size, |
---|
242 | uint8_t type, |
---|
243 | uint8_t flags |
---|
244 | ) |
---|
245 | { |
---|
246 | rtems_uint32_to_little_endian( begin, data + RTEMS_BDPART_MBR_OFFSET_BEGIN); |
---|
247 | rtems_uint32_to_little_endian( size, data + RTEMS_BDPART_MBR_OFFSET_SIZE); |
---|
248 | data [RTEMS_BDPART_MBR_OFFSET_TYPE] = type; |
---|
249 | data [RTEMS_BDPART_MBR_OFFSET_FLAGS] = flags; |
---|
250 | } |
---|
251 | |
---|
252 | static rtems_status_code rtems_bdpart_read_record( |
---|
253 | dev_t disk, |
---|
254 | rtems_blkdev_bnum index, |
---|
255 | rtems_bdbuf_buffer **block |
---|
256 | ) |
---|
257 | { |
---|
258 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
259 | |
---|
260 | /* Release previous block if necessary */ |
---|
261 | if (*block != NULL) { |
---|
262 | sc = rtems_bdbuf_release( *block); |
---|
263 | if (sc != RTEMS_SUCCESSFUL) { |
---|
264 | return sc; |
---|
265 | } |
---|
266 | } |
---|
267 | |
---|
268 | /* Read the record block */ |
---|
269 | sc = rtems_bdbuf_read( disk, index, block); |
---|
270 | if (sc != RTEMS_SUCCESSFUL) { |
---|
271 | return sc; |
---|
272 | } |
---|
273 | |
---|
274 | /* Check MBR signature */ |
---|
275 | if (!rtems_bdpart_is_valid_record( (*block)->buffer)) { |
---|
276 | return RTEMS_IO_ERROR; |
---|
277 | } |
---|
278 | |
---|
279 | return RTEMS_SUCCESSFUL; |
---|
280 | } |
---|
281 | |
---|
282 | static rtems_status_code rtems_bdpart_new_record( |
---|
283 | dev_t disk, |
---|
284 | rtems_blkdev_bnum index, |
---|
285 | rtems_bdbuf_buffer **block |
---|
286 | ) |
---|
287 | { |
---|
288 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
289 | |
---|
290 | /* Synchronize previous block if necessary */ |
---|
291 | if (*block != NULL) { |
---|
292 | sc = rtems_bdbuf_sync( *block); |
---|
293 | if (sc != RTEMS_SUCCESSFUL) { |
---|
294 | return sc; |
---|
295 | } |
---|
296 | } |
---|
297 | |
---|
298 | /* Read the new record block (this accounts for disk block sizes > 512) */ |
---|
299 | sc = rtems_bdbuf_read( disk, index, block); |
---|
300 | if (sc != RTEMS_SUCCESSFUL) { |
---|
301 | return sc; |
---|
302 | } |
---|
303 | |
---|
304 | /* Clear record */ |
---|
305 | memset( (*block)->buffer, 0, RTEMS_BDPART_BLOCK_SIZE); |
---|
306 | |
---|
307 | /* Write signature */ |
---|
308 | (*block)->buffer [RTEMS_BDPART_MBR_OFFSET_SIGNATURE_0] = |
---|
309 | RTEMS_BDPART_MBR_SIGNATURE_0; |
---|
310 | (*block)->buffer [RTEMS_BDPART_MBR_OFFSET_SIGNATURE_1] = |
---|
311 | RTEMS_BDPART_MBR_SIGNATURE_1; |
---|
312 | |
---|
313 | return RTEMS_SUCCESSFUL; |
---|
314 | } |
---|
315 | |
---|
316 | rtems_status_code rtems_bdpart_read( |
---|
317 | const char *disk_name, |
---|
318 | rtems_bdpart_format *format, |
---|
319 | rtems_bdpart_partition *pt, |
---|
320 | size_t *count |
---|
321 | ) |
---|
322 | { |
---|
323 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
324 | rtems_status_code esc = RTEMS_SUCCESSFUL; |
---|
325 | rtems_bdbuf_buffer *block = NULL; |
---|
326 | rtems_bdpart_partition *p = pt - 1; |
---|
327 | const rtems_bdpart_partition *p_end = pt + (count != NULL ? *count : 0); |
---|
328 | rtems_blkdev_bnum ep_begin = 0; /* Extended partition begin */ |
---|
329 | rtems_blkdev_bnum ebr = 0; /* Extended boot record block index */ |
---|
330 | rtems_blkdev_bnum disk_end = 0; |
---|
331 | dev_t disk = 0; |
---|
332 | size_t i = 0; |
---|
333 | const uint8_t *data = NULL; |
---|
334 | |
---|
335 | /* Check parameter */ |
---|
336 | if (format == NULL || pt == NULL || count == NULL) { |
---|
337 | return RTEMS_INVALID_ADDRESS; |
---|
338 | } |
---|
339 | |
---|
340 | /* Set count to a save value */ |
---|
341 | *count = 0; |
---|
342 | |
---|
343 | /* Get disk data */ |
---|
344 | sc = rtems_bdpart_get_disk_data( disk_name, &disk, &disk_end); |
---|
345 | if (sc != RTEMS_SUCCESSFUL) { |
---|
346 | return sc; |
---|
347 | } |
---|
348 | |
---|
349 | /* Read MBR */ |
---|
350 | sc = rtems_bdpart_read_record( disk, 0, &block); |
---|
351 | if (sc != RTEMS_SUCCESSFUL) { |
---|
352 | esc = sc; |
---|
353 | goto cleanup; |
---|
354 | } |
---|
355 | |
---|
356 | /* Read the first partition entry */ |
---|
357 | data = block->buffer + RTEMS_BDPART_MBR_OFFSET_TABLE_0; |
---|
358 | sc = rtems_bdpart_read_mbr_partition( data, &p, p_end, &ep_begin); |
---|
359 | if (sc != RTEMS_SUCCESSFUL) { |
---|
360 | esc = sc; |
---|
361 | goto cleanup; |
---|
362 | } |
---|
363 | |
---|
364 | /* Determine if we have a MBR or GPT format */ |
---|
365 | if (rtems_bdpart_mbr_partition_type( p->type) == RTEMS_BDPART_MBR_GPT) { |
---|
366 | esc = RTEMS_NOT_IMPLEMENTED; |
---|
367 | goto cleanup; |
---|
368 | } |
---|
369 | |
---|
370 | /* Set format */ |
---|
371 | format->type = RTEMS_BDPART_FORMAT_MBR; |
---|
372 | format->mbr.disk_id = rtems_uint32_from_little_endian( |
---|
373 | block->buffer + RTEMS_BDPART_MBR_OFFSET_DISK_ID |
---|
374 | ); |
---|
375 | format->mbr.dos_compatibility = true; |
---|
376 | |
---|
377 | /* Iterate through the rest of the primary partition table */ |
---|
378 | for (i = 1; i < 4; ++i) { |
---|
379 | data += RTEMS_BDPART_MBR_TABLE_ENTRY_SIZE; |
---|
380 | |
---|
381 | sc = rtems_bdpart_read_mbr_partition( data, &p, p_end, &ep_begin); |
---|
382 | if (sc != RTEMS_SUCCESSFUL) { |
---|
383 | esc = sc; |
---|
384 | goto cleanup; |
---|
385 | } |
---|
386 | } |
---|
387 | |
---|
388 | /* Iterate through the logical partitions within the extended partition */ |
---|
389 | ebr = ep_begin; |
---|
390 | while (ebr != 0) { |
---|
391 | rtems_blkdev_bnum tmp = 0; |
---|
392 | |
---|
393 | /* Read EBR */ |
---|
394 | sc = rtems_bdpart_read_record( disk, ebr, &block); |
---|
395 | if (sc != RTEMS_SUCCESSFUL) { |
---|
396 | esc = sc; |
---|
397 | goto cleanup; |
---|
398 | } |
---|
399 | |
---|
400 | /* Read first partition entry */ |
---|
401 | sc = rtems_bdpart_read_mbr_partition( |
---|
402 | block->buffer + RTEMS_BDPART_MBR_OFFSET_TABLE_0, |
---|
403 | &p, |
---|
404 | p_end, |
---|
405 | NULL |
---|
406 | ); |
---|
407 | if (sc != RTEMS_SUCCESSFUL) { |
---|
408 | esc = sc; |
---|
409 | goto cleanup; |
---|
410 | } |
---|
411 | |
---|
412 | /* Adjust partition begin */ |
---|
413 | tmp = p->begin + ebr; |
---|
414 | if (tmp > p->begin) { |
---|
415 | p->begin = tmp; |
---|
416 | } else { |
---|
417 | esc = RTEMS_IO_ERROR; |
---|
418 | goto cleanup; |
---|
419 | } |
---|
420 | |
---|
421 | /* Adjust partition end */ |
---|
422 | tmp = p->end + ebr; |
---|
423 | if (tmp > p->end) { |
---|
424 | p->end = tmp; |
---|
425 | } else { |
---|
426 | esc = RTEMS_IO_ERROR; |
---|
427 | goto cleanup; |
---|
428 | } |
---|
429 | |
---|
430 | /* Read second partition entry for next EBR block */ |
---|
431 | ebr = rtems_bdpart_next_ebr( |
---|
432 | block->buffer + RTEMS_BDPART_MBR_OFFSET_TABLE_1 |
---|
433 | ); |
---|
434 | if (ebr != 0) { |
---|
435 | /* Adjust partition EBR block index */ |
---|
436 | tmp = ebr + ep_begin; |
---|
437 | if (tmp > ebr) { |
---|
438 | ebr = tmp; |
---|
439 | } else { |
---|
440 | esc = RTEMS_IO_ERROR; |
---|
441 | goto cleanup; |
---|
442 | } |
---|
443 | } |
---|
444 | } |
---|
445 | |
---|
446 | /* Return partition count */ |
---|
447 | *count = (size_t) (p - pt + 1); |
---|
448 | |
---|
449 | cleanup: |
---|
450 | |
---|
451 | if (block != NULL) { |
---|
452 | rtems_bdbuf_release( block); |
---|
453 | } |
---|
454 | |
---|
455 | return esc; |
---|
456 | } |
---|
457 | |
---|
458 | void rtems_bdpart_sort( rtems_bdpart_partition *pt, size_t count) |
---|
459 | { |
---|
460 | qsort( pt, count, sizeof( *pt), rtems_bdpart_partition_compare); |
---|
461 | } |
---|
462 | |
---|
463 | rtems_status_code rtems_bdpart_write( |
---|
464 | const char *disk_name, |
---|
465 | const rtems_bdpart_format *format, |
---|
466 | const rtems_bdpart_partition *pt, |
---|
467 | size_t count |
---|
468 | ) |
---|
469 | { |
---|
470 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
471 | rtems_status_code esc = RTEMS_SUCCESSFUL; |
---|
472 | bool dos_compatibility = format != NULL |
---|
473 | && format->type == RTEMS_BDPART_FORMAT_MBR |
---|
474 | && format->mbr.dos_compatibility; |
---|
475 | rtems_bdbuf_buffer *block = NULL; |
---|
476 | rtems_blkdev_bnum disk_end = 0; |
---|
477 | rtems_blkdev_bnum record_space = |
---|
478 | dos_compatibility ? RTEMS_BDPART_MBR_CYLINDER_SIZE : 1; |
---|
479 | dev_t disk = 0; |
---|
480 | size_t ppc = 0; /* Primary partition count */ |
---|
481 | size_t i = 0; |
---|
482 | uint8_t *data = NULL; |
---|
483 | |
---|
484 | /* Check if we have something to do */ |
---|
485 | if (count == 0) { |
---|
486 | /* Nothing to do */ |
---|
487 | return RTEMS_SUCCESSFUL; |
---|
488 | } |
---|
489 | |
---|
490 | /* Check parameter */ |
---|
491 | if (format == NULL || pt == NULL) { |
---|
492 | return RTEMS_INVALID_ADDRESS; |
---|
493 | } |
---|
494 | |
---|
495 | /* Get disk data */ |
---|
496 | sc = rtems_bdpart_get_disk_data( disk_name, &disk, &disk_end); |
---|
497 | if (sc != RTEMS_SUCCESSFUL) { |
---|
498 | return sc; |
---|
499 | } |
---|
500 | |
---|
501 | /* Align end of disk on cylinder boundary if necessary */ |
---|
502 | if (dos_compatibility) { |
---|
503 | disk_end -= (disk_end % record_space); |
---|
504 | } |
---|
505 | |
---|
506 | /* Check that we have a consistent partition table */ |
---|
507 | for (i = 0; i < count; ++i) { |
---|
508 | const rtems_bdpart_partition *p = pt + i; |
---|
509 | |
---|
510 | /* Check that begin and end are proper within the disk */ |
---|
511 | if (p->begin >= disk_end || p->end > disk_end) { |
---|
512 | esc = RTEMS_INVALID_NUMBER; |
---|
513 | goto cleanup; |
---|
514 | } |
---|
515 | |
---|
516 | /* Check that begin and end are valid */ |
---|
517 | if (p->begin >= p->end) { |
---|
518 | esc = RTEMS_INVALID_NUMBER; |
---|
519 | goto cleanup; |
---|
520 | } |
---|
521 | |
---|
522 | /* Check that partitions do not overlap */ |
---|
523 | if (i > 0 && pt [i - 1].end > p->begin) { |
---|
524 | esc = RTEMS_INVALID_NUMBER; |
---|
525 | goto cleanup; |
---|
526 | } |
---|
527 | } |
---|
528 | |
---|
529 | /* Check format */ |
---|
530 | if (format->type != RTEMS_BDPART_FORMAT_MBR) { |
---|
531 | esc = RTEMS_NOT_IMPLEMENTED; |
---|
532 | goto cleanup; |
---|
533 | } |
---|
534 | |
---|
535 | /* |
---|
536 | * Set primary partition count. If we have more than four partitions we need |
---|
537 | * an extended partition which will contain the partitions of number four and |
---|
538 | * above as logical partitions. If we have four or less partitions we can |
---|
539 | * use the primary partition table. |
---|
540 | */ |
---|
541 | ppc = count <= 4 ? count : 3; |
---|
542 | |
---|
543 | /* |
---|
544 | * Check that the first primary partition starts at head one and sector one |
---|
545 | * under the virtual one head and 63 sectors geometry if necessary. |
---|
546 | */ |
---|
547 | if (dos_compatibility && pt [0].begin != RTEMS_BDPART_MBR_CYLINDER_SIZE) { |
---|
548 | esc = RTEMS_INVALID_NUMBER; |
---|
549 | goto cleanup; |
---|
550 | } |
---|
551 | |
---|
552 | /* |
---|
553 | * Check that we have enough space for the EBRs. The partitions with number |
---|
554 | * four and above are logical partitions if we have more than four partitions |
---|
555 | * in total. The logical partitions are contained in the extended partition. |
---|
556 | * Each logical partition is described via one EBR preceding the partition. |
---|
557 | * The space for the EBR and maybe some space which is needed for DOS |
---|
558 | * compatibility resides between the partitions. So there have to be gaps of |
---|
559 | * the appropriate size between the partitions. |
---|
560 | */ |
---|
561 | for (i = ppc; i < count; ++i) { |
---|
562 | if ((pt [i].begin - pt [i - 1].end) < record_space) { |
---|
563 | esc = RTEMS_INVALID_NUMBER; |
---|
564 | goto cleanup; |
---|
565 | } |
---|
566 | } |
---|
567 | |
---|
568 | /* Check that we can convert the parition descriptions to the MBR format */ |
---|
569 | for (i = 0; i < count; ++i) { |
---|
570 | uint8_t type = 0; |
---|
571 | |
---|
572 | const rtems_bdpart_partition *p = pt + i; |
---|
573 | |
---|
574 | /* Check type */ |
---|
575 | if (!rtems_bdpart_to_mbr_partition_type( p->type, &type)) { |
---|
576 | esc = RTEMS_INVALID_ID; |
---|
577 | goto cleanup; |
---|
578 | } |
---|
579 | |
---|
580 | /* Check flags */ |
---|
581 | if (p->flags > 0xffU) { |
---|
582 | esc = RTEMS_INVALID_ID; |
---|
583 | goto cleanup; |
---|
584 | } |
---|
585 | |
---|
586 | /* Check ID */ |
---|
587 | /* TODO */ |
---|
588 | } |
---|
589 | |
---|
590 | /* New MBR */ |
---|
591 | sc = rtems_bdpart_new_record( disk, 0, &block); |
---|
592 | if (sc != RTEMS_SUCCESSFUL) { |
---|
593 | esc = sc; |
---|
594 | goto cleanup; |
---|
595 | } |
---|
596 | |
---|
597 | /* Write disk ID */ |
---|
598 | rtems_uint32_to_little_endian( |
---|
599 | format->mbr.disk_id, |
---|
600 | block->buffer + RTEMS_BDPART_MBR_OFFSET_DISK_ID |
---|
601 | ); |
---|
602 | |
---|
603 | /* Write primary partition table */ |
---|
604 | data = block->buffer + RTEMS_BDPART_MBR_OFFSET_TABLE_0; |
---|
605 | for (i = 0; i < ppc; ++i) { |
---|
606 | const rtems_bdpart_partition *p = pt + i; |
---|
607 | |
---|
608 | /* Write partition entry */ |
---|
609 | rtems_bdpart_write_mbr_partition( |
---|
610 | data, |
---|
611 | p->begin, |
---|
612 | p->end - p->begin, |
---|
613 | rtems_bdpart_mbr_partition_type( p->type), |
---|
614 | (uint8_t) p->flags |
---|
615 | ); |
---|
616 | |
---|
617 | data += RTEMS_BDPART_MBR_TABLE_ENTRY_SIZE; |
---|
618 | } |
---|
619 | |
---|
620 | /* Write extended partition with logical partitions if necessary */ |
---|
621 | if (ppc != count) { |
---|
622 | rtems_blkdev_bnum ebr = 0; /* Extended boot record block index */ |
---|
623 | |
---|
624 | /* Begin of extended partition */ |
---|
625 | rtems_blkdev_bnum ep_begin = pt [ppc].begin - record_space; |
---|
626 | |
---|
627 | /* Write extended partition */ |
---|
628 | rtems_bdpart_write_mbr_partition( |
---|
629 | data, |
---|
630 | ep_begin, |
---|
631 | disk_end - ep_begin, |
---|
632 | RTEMS_BDPART_MBR_EXTENDED, |
---|
633 | 0 |
---|
634 | ); |
---|
635 | |
---|
636 | /* Write logical partitions */ |
---|
637 | for (i = ppc; i < count; ++i) { |
---|
638 | const rtems_bdpart_partition *p = pt + i; |
---|
639 | |
---|
640 | /* Write second partition entry */ |
---|
641 | if (i > ppc) { |
---|
642 | rtems_blkdev_bnum begin = p->begin - record_space; |
---|
643 | |
---|
644 | rtems_bdpart_write_mbr_partition( |
---|
645 | block->buffer + RTEMS_BDPART_MBR_OFFSET_TABLE_1, |
---|
646 | begin - ep_begin, |
---|
647 | disk_end - begin, |
---|
648 | RTEMS_BDPART_MBR_EXTENDED, |
---|
649 | 0 |
---|
650 | ); |
---|
651 | } |
---|
652 | |
---|
653 | /* New EBR */ |
---|
654 | ebr = p->begin - record_space; |
---|
655 | sc = rtems_bdpart_new_record( disk, ebr, &block); |
---|
656 | if (sc != RTEMS_SUCCESSFUL) { |
---|
657 | esc = sc; |
---|
658 | goto cleanup; |
---|
659 | } |
---|
660 | |
---|
661 | /* Write first partition entry */ |
---|
662 | rtems_bdpart_write_mbr_partition( |
---|
663 | block->buffer + RTEMS_BDPART_MBR_OFFSET_TABLE_0, |
---|
664 | record_space, |
---|
665 | p->end - p->begin, |
---|
666 | rtems_bdpart_mbr_partition_type( p->type), |
---|
667 | (uint8_t) p->flags |
---|
668 | ); |
---|
669 | } |
---|
670 | } |
---|
671 | |
---|
672 | cleanup: |
---|
673 | |
---|
674 | if (block != NULL) { |
---|
675 | rtems_bdbuf_sync( block); |
---|
676 | } |
---|
677 | |
---|
678 | return esc; |
---|
679 | } |
---|
680 | |
---|
681 | rtems_status_code rtems_bdpart_create( |
---|
682 | const char *disk_name, |
---|
683 | const rtems_bdpart_format *format, |
---|
684 | rtems_bdpart_partition *pt, |
---|
685 | const unsigned *dist, |
---|
686 | size_t count |
---|
687 | ) |
---|
688 | { |
---|
689 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
690 | bool dos_compatibility = format != NULL |
---|
691 | && format->type == RTEMS_BDPART_FORMAT_MBR |
---|
692 | && format->mbr.dos_compatibility; |
---|
693 | rtems_blkdev_bnum disk_end = 0; |
---|
694 | rtems_blkdev_bnum pos = 0; |
---|
695 | rtems_blkdev_bnum dist_sum = 0; |
---|
696 | rtems_blkdev_bnum record_space = |
---|
697 | dos_compatibility ? RTEMS_BDPART_MBR_CYLINDER_SIZE : 1; |
---|
698 | rtems_blkdev_bnum overhead = 0; |
---|
699 | rtems_blkdev_bnum free_space = 0; |
---|
700 | dev_t disk = 0; |
---|
701 | size_t i = 0; |
---|
702 | |
---|
703 | /* Check if we have something to do */ |
---|
704 | if (count == 0) { |
---|
705 | /* Nothing to do */ |
---|
706 | return RTEMS_SUCCESSFUL; |
---|
707 | } |
---|
708 | |
---|
709 | /* Check parameter */ |
---|
710 | if (format == NULL || pt == NULL || dist == NULL) { |
---|
711 | return RTEMS_INVALID_ADDRESS; |
---|
712 | } |
---|
713 | |
---|
714 | /* Get disk data */ |
---|
715 | sc = rtems_bdpart_get_disk_data( disk_name, &disk, &disk_end); |
---|
716 | if (sc != RTEMS_SUCCESSFUL) { |
---|
717 | return sc; |
---|
718 | } |
---|
719 | |
---|
720 | /* Get distribution sum and check for overflow */ |
---|
721 | for (i = 0; i < count; ++i) { |
---|
722 | unsigned prev_sum = dist_sum; |
---|
723 | |
---|
724 | dist_sum += dist [i]; |
---|
725 | |
---|
726 | if (dist_sum < prev_sum) { |
---|
727 | return RTEMS_INVALID_NUMBER; |
---|
728 | } |
---|
729 | |
---|
730 | if (dist [i] == 0) { |
---|
731 | return RTEMS_INVALID_NUMBER; |
---|
732 | } |
---|
733 | } |
---|
734 | |
---|
735 | /* Check format */ |
---|
736 | if (format->type != RTEMS_BDPART_FORMAT_MBR) { |
---|
737 | return RTEMS_NOT_IMPLEMENTED; |
---|
738 | } |
---|
739 | |
---|
740 | /* Align end of disk on cylinder boundary if necessary */ |
---|
741 | if (dos_compatibility) { |
---|
742 | disk_end -= (disk_end % record_space); |
---|
743 | } |
---|
744 | |
---|
745 | /* |
---|
746 | * We need at least space for the MBR and the compatibility space for the |
---|
747 | * first primary partition. |
---|
748 | */ |
---|
749 | overhead += record_space; |
---|
750 | |
---|
751 | /* |
---|
752 | * In case we need an extended partition and logical partitions we have to |
---|
753 | * account for the space of each EBR. |
---|
754 | */ |
---|
755 | if (count > 4) { |
---|
756 | overhead += (count - 3) * record_space; |
---|
757 | } |
---|
758 | |
---|
759 | /* |
---|
760 | * Account space to align every partition on cylinder boundaries if |
---|
761 | * necessary. |
---|
762 | */ |
---|
763 | if (dos_compatibility) { |
---|
764 | overhead += (count - 1) * record_space; |
---|
765 | } |
---|
766 | |
---|
767 | /* Check disk space */ |
---|
768 | if ((overhead + count) > disk_end) { |
---|
769 | return RTEMS_IO_ERROR; |
---|
770 | } |
---|
771 | |
---|
772 | /* Begin of first primary partition */ |
---|
773 | pos = record_space; |
---|
774 | |
---|
775 | /* Space for partitions */ |
---|
776 | free_space = disk_end - overhead; |
---|
777 | |
---|
778 | for (i = 0; i < count; ++i) { |
---|
779 | rtems_bdpart_partition *p = pt + i; |
---|
780 | |
---|
781 | /* Partition size */ |
---|
782 | rtems_blkdev_bnum s = free_space * dist [i]; |
---|
783 | if (s < free_space || s < dist [i]) { |
---|
784 | /* TODO: Calculate without overflow */ |
---|
785 | return RTEMS_INVALID_NUMBER; |
---|
786 | } |
---|
787 | s /= dist_sum; |
---|
788 | |
---|
789 | /* Ensure that the partition is not empty */ |
---|
790 | if (s == 0) { |
---|
791 | s = 1; |
---|
792 | } |
---|
793 | |
---|
794 | /* Align partition upwards */ |
---|
795 | s += record_space - (s % record_space); |
---|
796 | |
---|
797 | /* Partition begin and end */ |
---|
798 | p->begin = pos; |
---|
799 | pos += s; |
---|
800 | p->end = pos; |
---|
801 | |
---|
802 | /* Reserve space for the EBR if necessary */ |
---|
803 | if (count > 4 && i > 2) { |
---|
804 | p->begin += record_space; |
---|
805 | } |
---|
806 | } |
---|
807 | |
---|
808 | /* Expand the last partition to the disk end */ |
---|
809 | pt [count - 1].end = disk_end; |
---|
810 | |
---|
811 | return RTEMS_SUCCESSFUL; |
---|
812 | } |
---|
813 | |
---|
814 | #define RTEMS_BDPART_NUMBER_SIZE 4 |
---|
815 | |
---|
816 | rtems_status_code rtems_bdpart_register( |
---|
817 | const char *disk_name, |
---|
818 | const rtems_bdpart_partition *pt, |
---|
819 | size_t count |
---|
820 | ) |
---|
821 | { |
---|
822 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
823 | rtems_status_code esc = RTEMS_SUCCESSFUL; |
---|
824 | rtems_device_major_number major = 0; |
---|
825 | rtems_device_minor_number minor = 0; |
---|
826 | rtems_blkdev_bnum disk_end = 0; |
---|
827 | dev_t disk = 0; |
---|
828 | dev_t logical_disk = 0; |
---|
829 | char *logical_disk_name = NULL; |
---|
830 | char *logical_disk_marker = NULL; |
---|
831 | size_t disk_name_size = strlen( disk_name); |
---|
832 | size_t i = 0; |
---|
833 | |
---|
834 | /* Get disk data */ |
---|
835 | sc = rtems_bdpart_get_disk_data( disk_name, &disk, &disk_end); |
---|
836 | if (sc != RTEMS_SUCCESSFUL) { |
---|
837 | return sc; |
---|
838 | } |
---|
839 | |
---|
840 | /* Get the disk device identifier */ |
---|
841 | rtems_filesystem_split_dev_t( disk, major, minor); |
---|
842 | |
---|
843 | /* Create logical disk name */ |
---|
844 | logical_disk_name = malloc( disk_name_size + RTEMS_BDPART_NUMBER_SIZE); |
---|
845 | if (logical_disk_name == NULL) { |
---|
846 | return RTEMS_NO_MEMORY; |
---|
847 | } |
---|
848 | strncpy( logical_disk_name, disk_name, disk_name_size); |
---|
849 | logical_disk_marker = logical_disk_name + disk_name_size; |
---|
850 | |
---|
851 | /* Create a logical disk for each partition */ |
---|
852 | for (i = 0; i < count; ++i) { |
---|
853 | const rtems_bdpart_partition *p = pt + i; |
---|
854 | int rv = 0; |
---|
855 | |
---|
856 | /* New minor number */ |
---|
857 | ++minor; |
---|
858 | |
---|
859 | /* Create a new device identifier */ |
---|
860 | logical_disk = rtems_filesystem_make_dev_t( major, minor); |
---|
861 | |
---|
862 | /* Set partition number for logical disk name */ |
---|
863 | rv = snprintf( logical_disk_marker, RTEMS_BDPART_NUMBER_SIZE, "%zu", i + 1); |
---|
864 | if (rv >= RTEMS_BDPART_NUMBER_SIZE) { |
---|
865 | esc = RTEMS_INVALID_NAME; |
---|
866 | goto cleanup; |
---|
867 | } |
---|
868 | |
---|
869 | /* Create logical disk */ |
---|
870 | sc = rtems_disk_create_log( |
---|
871 | logical_disk, |
---|
872 | disk, |
---|
873 | p->begin, |
---|
874 | p->end - p->begin, |
---|
875 | logical_disk_name |
---|
876 | ); |
---|
877 | if (sc != RTEMS_SUCCESSFUL) { |
---|
878 | esc = sc; |
---|
879 | goto cleanup; |
---|
880 | } |
---|
881 | } |
---|
882 | |
---|
883 | cleanup: |
---|
884 | |
---|
885 | free( logical_disk_name); |
---|
886 | |
---|
887 | return esc; |
---|
888 | } |
---|
889 | |
---|
890 | rtems_status_code rtems_bdpart_register_from_disk( const char *disk_name) |
---|
891 | { |
---|
892 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
893 | rtems_bdpart_format format; |
---|
894 | rtems_bdpart_partition pt [RTEMS_BDPART_PARTITION_NUMBER_HINT]; |
---|
895 | size_t count = RTEMS_BDPART_PARTITION_NUMBER_HINT; |
---|
896 | |
---|
897 | /* Read partitions */ |
---|
898 | sc = rtems_bdpart_read( disk_name, &format, pt, &count); |
---|
899 | if (sc != RTEMS_SUCCESSFUL) { |
---|
900 | return sc; |
---|
901 | } |
---|
902 | |
---|
903 | /* Register partitions */ |
---|
904 | return rtems_bdpart_register( disk_name, pt, count); |
---|
905 | } |
---|
906 | |
---|
907 | rtems_status_code rtems_bdpart_unregister( |
---|
908 | const char *disk_name, |
---|
909 | const rtems_bdpart_partition *pt __attribute__((unused)), |
---|
910 | size_t count |
---|
911 | ) |
---|
912 | { |
---|
913 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
914 | rtems_device_major_number major = 0; |
---|
915 | rtems_device_minor_number minor = 0; |
---|
916 | rtems_blkdev_bnum disk_end = 0; |
---|
917 | dev_t disk = 0; |
---|
918 | dev_t logical_disk = 0; |
---|
919 | size_t i = 0; |
---|
920 | |
---|
921 | /* Get disk data */ |
---|
922 | sc = rtems_bdpart_get_disk_data( disk_name, &disk, &disk_end); |
---|
923 | if (sc != RTEMS_SUCCESSFUL) { |
---|
924 | return sc; |
---|
925 | } |
---|
926 | |
---|
927 | /* Get the disk device identifier */ |
---|
928 | rtems_filesystem_split_dev_t( disk, major, minor); |
---|
929 | |
---|
930 | /* Create a logical disk for each partition */ |
---|
931 | for (i = 0; i < count; ++i) { |
---|
932 | /* New minor number */ |
---|
933 | ++minor; |
---|
934 | |
---|
935 | /* Get the device identifier */ |
---|
936 | logical_disk = rtems_filesystem_make_dev_t( major, minor); |
---|
937 | |
---|
938 | /* Delete logical disk */ |
---|
939 | sc = rtems_disk_delete( logical_disk); |
---|
940 | if (sc != RTEMS_SUCCESSFUL) { |
---|
941 | return sc; |
---|
942 | } |
---|
943 | } |
---|
944 | |
---|
945 | return RTEMS_SUCCESSFUL; |
---|
946 | } |
---|
947 | |
---|
948 | rtems_status_code rtems_bdpart_mount( |
---|
949 | const char *disk_name, |
---|
950 | const rtems_bdpart_partition *pt __attribute__((unused)), |
---|
951 | size_t count, |
---|
952 | const char *mount_base |
---|
953 | ) |
---|
954 | { |
---|
955 | rtems_status_code esc = RTEMS_SUCCESSFUL; |
---|
956 | const char *disk_file_name = strrchr( disk_name, '/'); |
---|
957 | char *logical_disk_name = NULL; |
---|
958 | char *logical_disk_marker = NULL; |
---|
959 | char *mount_point = NULL; |
---|
960 | char *mount_marker = NULL; |
---|
961 | size_t disk_file_name_size = 0; |
---|
962 | size_t disk_name_size = strlen( disk_name); |
---|
963 | size_t mount_base_size = strlen( mount_base); |
---|
964 | size_t i = 0; |
---|
965 | |
---|
966 | /* Create logical disk name base */ |
---|
967 | logical_disk_name = malloc( disk_name_size + RTEMS_BDPART_NUMBER_SIZE); |
---|
968 | if (logical_disk_name == NULL) { |
---|
969 | return RTEMS_NO_MEMORY; |
---|
970 | } |
---|
971 | strncpy( logical_disk_name, disk_name, disk_name_size); |
---|
972 | |
---|
973 | /* Get disk file name */ |
---|
974 | if (disk_file_name != NULL) { |
---|
975 | disk_file_name += 1; |
---|
976 | disk_file_name_size = strlen( disk_file_name); |
---|
977 | } else { |
---|
978 | disk_file_name = disk_name; |
---|
979 | disk_file_name_size = disk_name_size; |
---|
980 | } |
---|
981 | |
---|
982 | /* Create mount point base */ |
---|
983 | mount_point = malloc( mount_base_size + 1 + disk_file_name_size + RTEMS_BDPART_NUMBER_SIZE); |
---|
984 | if (mount_point == NULL) { |
---|
985 | esc = RTEMS_NO_MEMORY; |
---|
986 | goto cleanup; |
---|
987 | } |
---|
988 | strncpy( mount_point, mount_base, mount_base_size); |
---|
989 | mount_point [mount_base_size] = '/'; |
---|
990 | strncpy( mount_point + mount_base_size + 1, disk_file_name, disk_file_name_size); |
---|
991 | |
---|
992 | /* Markers */ |
---|
993 | logical_disk_marker = logical_disk_name + disk_name_size; |
---|
994 | mount_marker = mount_point + mount_base_size + 1 + disk_file_name_size; |
---|
995 | |
---|
996 | /* Mount supported file systems for each partition */ |
---|
997 | for (i = 0; i < count; ++i) { |
---|
998 | /* Create logical disk name */ |
---|
999 | int rv = snprintf( logical_disk_marker, RTEMS_BDPART_NUMBER_SIZE, "%zu", i + 1); |
---|
1000 | if (rv >= RTEMS_BDPART_NUMBER_SIZE) { |
---|
1001 | esc = RTEMS_INVALID_NAME; |
---|
1002 | goto cleanup; |
---|
1003 | } |
---|
1004 | |
---|
1005 | /* Create mount point */ |
---|
1006 | strncpy( mount_marker, logical_disk_marker, RTEMS_BDPART_NUMBER_SIZE); |
---|
1007 | rv = rtems_fsmount_create_mount_point( mount_point); |
---|
1008 | if (rv != 0) { |
---|
1009 | esc = RTEMS_IO_ERROR; |
---|
1010 | goto cleanup; |
---|
1011 | } |
---|
1012 | |
---|
1013 | /* Mount */ |
---|
1014 | rv = mount( |
---|
1015 | NULL, |
---|
1016 | &msdos_ops, |
---|
1017 | 0, |
---|
1018 | logical_disk_name, |
---|
1019 | mount_point |
---|
1020 | ); |
---|
1021 | if (rv != 0) { |
---|
1022 | rmdir( mount_point); |
---|
1023 | } |
---|
1024 | } |
---|
1025 | |
---|
1026 | cleanup: |
---|
1027 | |
---|
1028 | free( logical_disk_name); |
---|
1029 | free( mount_point); |
---|
1030 | |
---|
1031 | return esc; |
---|
1032 | } |
---|
1033 | |
---|
1034 | rtems_status_code rtems_bdpart_unmount( |
---|
1035 | const char *disk_name, |
---|
1036 | const rtems_bdpart_partition *pt __attribute__((unused)), |
---|
1037 | size_t count, |
---|
1038 | const char *mount_base |
---|
1039 | ) |
---|
1040 | { |
---|
1041 | rtems_status_code esc = RTEMS_SUCCESSFUL; |
---|
1042 | const char *disk_file_name = strrchr( disk_name, '/'); |
---|
1043 | char *mount_point = NULL; |
---|
1044 | char *mount_marker = NULL; |
---|
1045 | size_t disk_file_name_size = 0; |
---|
1046 | size_t disk_name_size = strlen( disk_name); |
---|
1047 | size_t mount_base_size = strlen( mount_base); |
---|
1048 | size_t i = 0; |
---|
1049 | |
---|
1050 | /* Get disk file name */ |
---|
1051 | if (disk_file_name != NULL) { |
---|
1052 | disk_file_name += 1; |
---|
1053 | disk_file_name_size = strlen( disk_file_name); |
---|
1054 | } else { |
---|
1055 | disk_file_name = disk_name; |
---|
1056 | disk_file_name_size = disk_name_size; |
---|
1057 | } |
---|
1058 | |
---|
1059 | /* Create mount point base */ |
---|
1060 | mount_point = malloc( mount_base_size + 1 + disk_file_name_size + RTEMS_BDPART_NUMBER_SIZE); |
---|
1061 | if (mount_point == NULL) { |
---|
1062 | esc = RTEMS_NO_MEMORY; |
---|
1063 | goto cleanup; |
---|
1064 | } |
---|
1065 | strncpy( mount_point, mount_base, mount_base_size); |
---|
1066 | mount_point [mount_base_size] = '/'; |
---|
1067 | strncpy( mount_point + mount_base_size + 1, disk_file_name, disk_file_name_size); |
---|
1068 | |
---|
1069 | /* Marker */ |
---|
1070 | mount_marker = mount_point + mount_base_size + 1 + disk_file_name_size; |
---|
1071 | |
---|
1072 | /* Mount supported file systems for each partition */ |
---|
1073 | for (i = 0; i < count; ++i) { |
---|
1074 | /* Create mount point */ |
---|
1075 | int rv = snprintf( mount_marker, RTEMS_BDPART_NUMBER_SIZE, "%zu", i + 1); |
---|
1076 | if (rv >= RTEMS_BDPART_NUMBER_SIZE) { |
---|
1077 | esc = RTEMS_INVALID_NAME; |
---|
1078 | goto cleanup; |
---|
1079 | } |
---|
1080 | |
---|
1081 | /* Unmount */ |
---|
1082 | rv = unmount( mount_point); |
---|
1083 | if (rv == 0) { |
---|
1084 | /* Remove mount point */ |
---|
1085 | rv = rmdir( mount_point); |
---|
1086 | if (rv != 0) { |
---|
1087 | esc = RTEMS_IO_ERROR; |
---|
1088 | goto cleanup; |
---|
1089 | } |
---|
1090 | } |
---|
1091 | } |
---|
1092 | |
---|
1093 | cleanup: |
---|
1094 | |
---|
1095 | free( mount_point); |
---|
1096 | |
---|
1097 | return esc; |
---|
1098 | } |
---|
1099 | |
---|
1100 | void rtems_bdpart_dump( const rtems_bdpart_partition *pt, size_t count) |
---|
1101 | { |
---|
1102 | size_t i = 0; |
---|
1103 | |
---|
1104 | printf( |
---|
1105 | "-------------------------------------------------------------------------------\n" |
---|
1106 | " PARTITION TABLE\n" |
---|
1107 | "------------+------------+-----------------------------------------------------\n" |
---|
1108 | " BEGIN | END | TYPE\n" |
---|
1109 | "------------+------------+-----------------------------------------------------\n" |
---|
1110 | ); |
---|
1111 | |
---|
1112 | for (i = 0; i < count; ++i) { |
---|
1113 | const rtems_bdpart_partition *p = pt + i; |
---|
1114 | const char *type = NULL; |
---|
1115 | char type_buffer [52]; |
---|
1116 | uint8_t type_mbr = 0; |
---|
1117 | |
---|
1118 | if (rtems_bdpart_to_mbr_partition_type( p->type, &type_mbr)) { |
---|
1119 | switch (type_mbr) { |
---|
1120 | case RTEMS_BDPART_MBR_FAT_12: |
---|
1121 | type = "FAT 12"; |
---|
1122 | break; |
---|
1123 | case RTEMS_BDPART_MBR_FAT_16: |
---|
1124 | type = "FAT 16"; |
---|
1125 | break; |
---|
1126 | case RTEMS_BDPART_MBR_FAT_16_LBA: |
---|
1127 | type = "FAT 16 LBA"; |
---|
1128 | break; |
---|
1129 | case RTEMS_BDPART_MBR_FAT_32: |
---|
1130 | type = "FAT 32"; |
---|
1131 | break; |
---|
1132 | case RTEMS_BDPART_MBR_FAT_32_LBA: |
---|
1133 | type = "FAT 32 LBA"; |
---|
1134 | break; |
---|
1135 | case RTEMS_BDPART_MBR_DATA: |
---|
1136 | type = "DATA"; |
---|
1137 | break; |
---|
1138 | default: |
---|
1139 | snprintf( type_buffer, sizeof( type_buffer), "0x%02" PRIx8, type_mbr); |
---|
1140 | type = type_buffer; |
---|
1141 | break; |
---|
1142 | } |
---|
1143 | } else { |
---|
1144 | rtems_bdpart_type_to_string( p->type, type_buffer); |
---|
1145 | type = type_buffer; |
---|
1146 | } |
---|
1147 | |
---|
1148 | printf( |
---|
1149 | " %10lu | %10lu |%52s\n", |
---|
1150 | (unsigned long) p->begin, |
---|
1151 | (unsigned long) p->end, |
---|
1152 | type |
---|
1153 | ); |
---|
1154 | } |
---|
1155 | |
---|
1156 | puts( "------------+------------+-----------------------------------------------------"); |
---|
1157 | } |
---|