1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2001
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7 #include <common.h>
8 #include <blk.h>
9 #include <command.h>
10 #include <env.h>
11 #include <errno.h>
12 #include <ide.h>
13 #include <log.h>
14 #include <malloc.h>
15 #include <part.h>
16 #include <ubifs_uboot.h>
17
18 #undef PART_DEBUG
19
20 #ifdef PART_DEBUG
21 #define PRINTF(fmt,args...) printf (fmt ,##args)
22 #else
23 #define PRINTF(fmt,args...)
24 #endif
25
26 /* Check all partition types */
27 #define PART_TYPE_ALL -1
28
part_driver_lookup_type(struct blk_desc * dev_desc)29 static struct part_driver *part_driver_lookup_type(struct blk_desc *dev_desc)
30 {
31 struct part_driver *drv =
32 ll_entry_start(struct part_driver, part_driver);
33 const int n_ents = ll_entry_count(struct part_driver, part_driver);
34 struct part_driver *entry;
35
36 if (dev_desc->part_type == PART_TYPE_UNKNOWN) {
37 for (entry = drv; entry != drv + n_ents; entry++) {
38 int ret;
39
40 ret = entry->test(dev_desc);
41 if (!ret) {
42 dev_desc->part_type = entry->part_type;
43 return entry;
44 }
45 }
46 } else {
47 for (entry = drv; entry != drv + n_ents; entry++) {
48 if (dev_desc->part_type == entry->part_type)
49 return entry;
50 }
51 }
52
53 /* Not found */
54 return NULL;
55 }
56
57 #ifdef CONFIG_HAVE_BLOCK_DEVICE
get_dev_hwpart(const char * ifname,int dev,int hwpart)58 static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
59 {
60 struct blk_desc *dev_desc;
61 int ret;
62
63 dev_desc = blk_get_devnum_by_typename(ifname, dev);
64 if (!dev_desc) {
65 debug("%s: No device for iface '%s', dev %d\n", __func__,
66 ifname, dev);
67 return NULL;
68 }
69 ret = blk_dselect_hwpart(dev_desc, hwpart);
70 if (ret) {
71 debug("%s: Failed to select h/w partition: err-%d\n", __func__,
72 ret);
73 return NULL;
74 }
75
76 return dev_desc;
77 }
78
blk_get_dev(const char * ifname,int dev)79 struct blk_desc *blk_get_dev(const char *ifname, int dev)
80 {
81 return get_dev_hwpart(ifname, dev, 0);
82 }
83 #else
get_dev_hwpart(const char * ifname,int dev,int hwpart)84 struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
85 {
86 return NULL;
87 }
88
blk_get_dev(const char * ifname,int dev)89 struct blk_desc *blk_get_dev(const char *ifname, int dev)
90 {
91 return NULL;
92 }
93 #endif
94
95 #ifdef CONFIG_HAVE_BLOCK_DEVICE
96
97 /* ------------------------------------------------------------------------- */
98 /*
99 * reports device info to the user
100 */
101
102 #ifdef CONFIG_LBA48
103 typedef uint64_t lba512_t;
104 #else
105 typedef lbaint_t lba512_t;
106 #endif
107
108 /*
109 * Overflowless variant of (block_count * mul_by / 2**right_shift)
110 * when 2**right_shift > mul_by
111 */
lba512_muldiv(lba512_t block_count,lba512_t mul_by,int right_shift)112 static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by,
113 int right_shift)
114 {
115 lba512_t bc_quot, bc_rem;
116
117 /* x * m / d == x / d * m + (x % d) * m / d */
118 bc_quot = block_count >> right_shift;
119 bc_rem = block_count - (bc_quot << right_shift);
120 return bc_quot * mul_by + ((bc_rem * mul_by) >> right_shift);
121 }
122
dev_print(struct blk_desc * dev_desc)123 void dev_print (struct blk_desc *dev_desc)
124 {
125 lba512_t lba512; /* number of blocks if 512bytes block size */
126
127 if (dev_desc->type == DEV_TYPE_UNKNOWN) {
128 puts ("not available\n");
129 return;
130 }
131
132 switch (dev_desc->if_type) {
133 case IF_TYPE_SCSI:
134 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
135 dev_desc->target,dev_desc->lun,
136 dev_desc->vendor,
137 dev_desc->product,
138 dev_desc->revision);
139 break;
140 case IF_TYPE_ATAPI:
141 case IF_TYPE_IDE:
142 case IF_TYPE_SATA:
143 printf ("Model: %s Firm: %s Ser#: %s\n",
144 dev_desc->vendor,
145 dev_desc->revision,
146 dev_desc->product);
147 break;
148 case IF_TYPE_SD:
149 case IF_TYPE_MMC:
150 case IF_TYPE_USB:
151 case IF_TYPE_NVME:
152 case IF_TYPE_PVBLOCK:
153 case IF_TYPE_HOST:
154 printf ("Vendor: %s Rev: %s Prod: %s\n",
155 dev_desc->vendor,
156 dev_desc->revision,
157 dev_desc->product);
158 break;
159 case IF_TYPE_VIRTIO:
160 printf("%s VirtIO Block Device\n", dev_desc->vendor);
161 break;
162 case IF_TYPE_DOC:
163 puts("device type DOC\n");
164 return;
165 case IF_TYPE_UNKNOWN:
166 puts("device type unknown\n");
167 return;
168 default:
169 printf("Unhandled device type: %i\n", dev_desc->if_type);
170 return;
171 }
172 puts (" Type: ");
173 if (dev_desc->removable)
174 puts ("Removable ");
175 switch (dev_desc->type & 0x1F) {
176 case DEV_TYPE_HARDDISK:
177 puts ("Hard Disk");
178 break;
179 case DEV_TYPE_CDROM:
180 puts ("CD ROM");
181 break;
182 case DEV_TYPE_OPDISK:
183 puts ("Optical Device");
184 break;
185 case DEV_TYPE_TAPE:
186 puts ("Tape");
187 break;
188 default:
189 printf ("# %02X #", dev_desc->type & 0x1F);
190 break;
191 }
192 puts ("\n");
193 if (dev_desc->lba > 0L && dev_desc->blksz > 0L) {
194 ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
195 lbaint_t lba;
196
197 lba = dev_desc->lba;
198
199 lba512 = (lba * (dev_desc->blksz/512));
200 /* round to 1 digit */
201 /* 2048 = (1024 * 1024) / 512 MB */
202 mb = lba512_muldiv(lba512, 10, 11);
203
204 mb_quot = mb / 10;
205 mb_rem = mb - (10 * mb_quot);
206
207 gb = mb / 1024;
208 gb_quot = gb / 10;
209 gb_rem = gb - (10 * gb_quot);
210 #ifdef CONFIG_LBA48
211 if (dev_desc->lba48)
212 printf (" Supports 48-bit addressing\n");
213 #endif
214 #if defined(CONFIG_SYS_64BIT_LBA)
215 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
216 mb_quot, mb_rem,
217 gb_quot, gb_rem,
218 lba,
219 dev_desc->blksz);
220 #else
221 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
222 mb_quot, mb_rem,
223 gb_quot, gb_rem,
224 (ulong)lba,
225 dev_desc->blksz);
226 #endif
227 } else {
228 puts (" Capacity: not available\n");
229 }
230 }
231 #endif
232
233 #ifdef CONFIG_HAVE_BLOCK_DEVICE
234
part_init(struct blk_desc * dev_desc)235 void part_init(struct blk_desc *dev_desc)
236 {
237 struct part_driver *drv =
238 ll_entry_start(struct part_driver, part_driver);
239 const int n_ents = ll_entry_count(struct part_driver, part_driver);
240 struct part_driver *entry;
241
242 blkcache_invalidate(dev_desc->if_type, dev_desc->devnum);
243
244 dev_desc->part_type = PART_TYPE_UNKNOWN;
245 for (entry = drv; entry != drv + n_ents; entry++) {
246 int ret;
247
248 ret = entry->test(dev_desc);
249 debug("%s: try '%s': ret=%d\n", __func__, entry->name, ret);
250 if (!ret) {
251 dev_desc->part_type = entry->part_type;
252 break;
253 }
254 }
255 }
256
print_part_header(const char * type,struct blk_desc * dev_desc)257 static void print_part_header(const char *type, struct blk_desc *dev_desc)
258 {
259 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
260 CONFIG_IS_ENABLED(DOS_PARTITION) || \
261 CONFIG_IS_ENABLED(ISO_PARTITION) || \
262 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
263 CONFIG_IS_ENABLED(EFI_PARTITION)
264 puts ("\nPartition Map for ");
265 switch (dev_desc->if_type) {
266 case IF_TYPE_IDE:
267 puts ("IDE");
268 break;
269 case IF_TYPE_SATA:
270 puts ("SATA");
271 break;
272 case IF_TYPE_SCSI:
273 puts ("SCSI");
274 break;
275 case IF_TYPE_ATAPI:
276 puts ("ATAPI");
277 break;
278 case IF_TYPE_USB:
279 puts ("USB");
280 break;
281 case IF_TYPE_DOC:
282 puts ("DOC");
283 break;
284 case IF_TYPE_MMC:
285 puts ("MMC");
286 break;
287 case IF_TYPE_HOST:
288 puts ("HOST");
289 break;
290 case IF_TYPE_NVME:
291 puts ("NVMe");
292 break;
293 case IF_TYPE_PVBLOCK:
294 puts("PV BLOCK");
295 break;
296 case IF_TYPE_VIRTIO:
297 puts("VirtIO");
298 break;
299 default:
300 puts ("UNKNOWN");
301 break;
302 }
303 printf (" device %d -- Partition Type: %s\n\n",
304 dev_desc->devnum, type);
305 #endif /* any CONFIG_..._PARTITION */
306 }
307
part_print(struct blk_desc * dev_desc)308 void part_print(struct blk_desc *dev_desc)
309 {
310 struct part_driver *drv;
311
312 drv = part_driver_lookup_type(dev_desc);
313 if (!drv) {
314 printf("## Unknown partition table type %x\n",
315 dev_desc->part_type);
316 return;
317 }
318
319 PRINTF("## Testing for valid %s partition ##\n", drv->name);
320 print_part_header(drv->name, dev_desc);
321 if (drv->print)
322 drv->print(dev_desc);
323 }
324
325 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
326
part_get_info(struct blk_desc * dev_desc,int part,struct disk_partition * info)327 int part_get_info(struct blk_desc *dev_desc, int part,
328 struct disk_partition *info)
329 {
330 #ifdef CONFIG_HAVE_BLOCK_DEVICE
331 struct part_driver *drv;
332
333 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
334 /* The common case is no UUID support */
335 info->uuid[0] = 0;
336 #endif
337 #ifdef CONFIG_PARTITION_TYPE_GUID
338 info->type_guid[0] = 0;
339 #endif
340
341 drv = part_driver_lookup_type(dev_desc);
342 if (!drv) {
343 debug("## Unknown partition table type %x\n",
344 dev_desc->part_type);
345 return -EPROTONOSUPPORT;
346 }
347 if (!drv->get_info) {
348 PRINTF("## Driver %s does not have the get_info() method\n",
349 drv->name);
350 return -ENOSYS;
351 }
352 if (drv->get_info(dev_desc, part, info) == 0) {
353 PRINTF("## Valid %s partition found ##\n", drv->name);
354 return 0;
355 }
356 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
357
358 return -ENOENT;
359 }
360
part_get_info_whole_disk(struct blk_desc * dev_desc,struct disk_partition * info)361 int part_get_info_whole_disk(struct blk_desc *dev_desc,
362 struct disk_partition *info)
363 {
364 info->start = 0;
365 info->size = dev_desc->lba;
366 info->blksz = dev_desc->blksz;
367 info->bootable = 0;
368 strcpy((char *)info->type, BOOT_PART_TYPE);
369 strcpy((char *)info->name, "Whole Disk");
370 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
371 info->uuid[0] = 0;
372 #endif
373 #ifdef CONFIG_PARTITION_TYPE_GUID
374 info->type_guid[0] = 0;
375 #endif
376
377 return 0;
378 }
379
blk_get_device_by_str(const char * ifname,const char * dev_hwpart_str,struct blk_desc ** dev_desc)380 int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str,
381 struct blk_desc **dev_desc)
382 {
383 char *ep;
384 char *dup_str = NULL;
385 const char *dev_str, *hwpart_str;
386 int dev, hwpart;
387
388 hwpart_str = strchr(dev_hwpart_str, '.');
389 if (hwpart_str) {
390 dup_str = strdup(dev_hwpart_str);
391 dup_str[hwpart_str - dev_hwpart_str] = 0;
392 dev_str = dup_str;
393 hwpart_str++;
394 } else {
395 dev_str = dev_hwpart_str;
396 hwpart = 0;
397 }
398
399 dev = simple_strtoul(dev_str, &ep, 16);
400 if (*ep) {
401 printf("** Bad device specification %s %s **\n",
402 ifname, dev_str);
403 dev = -EINVAL;
404 goto cleanup;
405 }
406
407 if (hwpart_str) {
408 hwpart = simple_strtoul(hwpart_str, &ep, 16);
409 if (*ep) {
410 printf("** Bad HW partition specification %s %s **\n",
411 ifname, hwpart_str);
412 dev = -EINVAL;
413 goto cleanup;
414 }
415 }
416
417 *dev_desc = get_dev_hwpart(ifname, dev, hwpart);
418 if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
419 debug("** Bad device %s %s **\n", ifname, dev_hwpart_str);
420 dev = -ENODEV;
421 goto cleanup;
422 }
423
424 #ifdef CONFIG_HAVE_BLOCK_DEVICE
425 /*
426 * Updates the partition table for the specified hw partition.
427 * Always should be done, otherwise hw partition 0 will return stale
428 * data after displaying a non-zero hw partition.
429 */
430 part_init(*dev_desc);
431 #endif
432
433 cleanup:
434 free(dup_str);
435 return dev;
436 }
437
438 #define PART_UNSPECIFIED -2
439 #define PART_AUTO -1
blk_get_device_part_str(const char * ifname,const char * dev_part_str,struct blk_desc ** dev_desc,struct disk_partition * info,int allow_whole_dev)440 int blk_get_device_part_str(const char *ifname, const char *dev_part_str,
441 struct blk_desc **dev_desc,
442 struct disk_partition *info, int allow_whole_dev)
443 {
444 int ret;
445 const char *part_str;
446 char *dup_str = NULL;
447 const char *dev_str;
448 int dev;
449 char *ep;
450 int p;
451 int part;
452 struct disk_partition tmpinfo;
453
454 #ifdef CONFIG_SANDBOX
455 /*
456 * Special-case a pseudo block device "hostfs", to allow access to the
457 * host's own filesystem.
458 */
459 if (0 == strcmp(ifname, "hostfs")) {
460 *dev_desc = NULL;
461 info->start = 0;
462 info->size = 0;
463 info->blksz = 0;
464 info->bootable = 0;
465 strcpy((char *)info->type, BOOT_PART_TYPE);
466 strcpy((char *)info->name, "Sandbox host");
467 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
468 info->uuid[0] = 0;
469 #endif
470 #ifdef CONFIG_PARTITION_TYPE_GUID
471 info->type_guid[0] = 0;
472 #endif
473
474 return 0;
475 }
476 #endif
477
478 #ifdef CONFIG_CMD_UBIFS
479 /*
480 * Special-case ubi, ubi goes through a mtd, rather than through
481 * a regular block device.
482 */
483 if (0 == strcmp(ifname, "ubi")) {
484 if (!ubifs_is_mounted()) {
485 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
486 return -EINVAL;
487 }
488
489 *dev_desc = NULL;
490 memset(info, 0, sizeof(*info));
491 strcpy((char *)info->type, BOOT_PART_TYPE);
492 strcpy((char *)info->name, "UBI");
493 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
494 info->uuid[0] = 0;
495 #endif
496 return 0;
497 }
498 #endif
499
500 /* If no dev_part_str, use bootdevice environment variable */
501 if (!dev_part_str || !strlen(dev_part_str) ||
502 !strcmp(dev_part_str, "-"))
503 dev_part_str = env_get("bootdevice");
504
505 /* If still no dev_part_str, it's an error */
506 if (!dev_part_str) {
507 printf("** No device specified **\n");
508 ret = -ENODEV;
509 goto cleanup;
510 }
511
512 /* Separate device and partition ID specification */
513 part_str = strchr(dev_part_str, ':');
514 if (part_str) {
515 dup_str = strdup(dev_part_str);
516 dup_str[part_str - dev_part_str] = 0;
517 dev_str = dup_str;
518 part_str++;
519 } else {
520 dev_str = dev_part_str;
521 }
522
523 /* Look up the device */
524 dev = blk_get_device_by_str(ifname, dev_str, dev_desc);
525 if (dev < 0) {
526 ret = dev;
527 goto cleanup;
528 }
529
530 /* Convert partition ID string to number */
531 if (!part_str || !*part_str) {
532 part = PART_UNSPECIFIED;
533 } else if (!strcmp(part_str, "auto")) {
534 part = PART_AUTO;
535 } else {
536 /* Something specified -> use exactly that */
537 part = (int)simple_strtoul(part_str, &ep, 16);
538 /*
539 * Less than whole string converted,
540 * or request for whole device, but caller requires partition.
541 */
542 if (*ep || (part == 0 && !allow_whole_dev)) {
543 printf("** Bad partition specification %s %s **\n",
544 ifname, dev_part_str);
545 ret = -ENOENT;
546 goto cleanup;
547 }
548 }
549
550 /*
551 * No partition table on device,
552 * or user requested partition 0 (entire device).
553 */
554 if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) ||
555 (part == 0)) {
556 if (!(*dev_desc)->lba) {
557 printf("** Bad device size - %s %s **\n", ifname,
558 dev_str);
559 ret = -EINVAL;
560 goto cleanup;
561 }
562
563 /*
564 * If user specified a partition ID other than 0,
565 * or the calling command only accepts partitions,
566 * it's an error.
567 */
568 if ((part > 0) || (!allow_whole_dev)) {
569 printf("** No partition table - %s %s **\n", ifname,
570 dev_str);
571 ret = -EPROTONOSUPPORT;
572 goto cleanup;
573 }
574
575 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
576
577 part_get_info_whole_disk(*dev_desc, info);
578
579 ret = 0;
580 goto cleanup;
581 }
582
583 /*
584 * Now there's known to be a partition table,
585 * not specifying a partition means to pick partition 1.
586 */
587 if (part == PART_UNSPECIFIED)
588 part = 1;
589
590 /*
591 * If user didn't specify a partition number, or did specify something
592 * other than "auto", use that partition number directly.
593 */
594 if (part != PART_AUTO) {
595 ret = part_get_info(*dev_desc, part, info);
596 if (ret) {
597 printf("** Invalid partition %d **\n", part);
598 goto cleanup;
599 }
600 } else {
601 /*
602 * Find the first bootable partition.
603 * If none are bootable, fall back to the first valid partition.
604 */
605 part = 0;
606 for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
607 ret = part_get_info(*dev_desc, p, info);
608 if (ret)
609 continue;
610
611 /*
612 * First valid partition, or new better partition?
613 * If so, save partition ID.
614 */
615 if (!part || info->bootable)
616 part = p;
617
618 /* Best possible partition? Stop searching. */
619 if (info->bootable)
620 break;
621
622 /*
623 * We now need to search further for best possible.
624 * If we what we just queried was the best so far,
625 * save the info since we over-write it next loop.
626 */
627 if (part == p)
628 tmpinfo = *info;
629 }
630 /* If we found any acceptable partition */
631 if (part) {
632 /*
633 * If we searched all possible partition IDs,
634 * return the first valid partition we found.
635 */
636 if (p == MAX_SEARCH_PARTITIONS + 1)
637 *info = tmpinfo;
638 } else {
639 printf("** No valid partitions found **\n");
640 goto cleanup;
641 }
642 }
643 if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) {
644 printf("** Invalid partition type \"%.32s\""
645 " (expect \"" BOOT_PART_TYPE "\")\n",
646 info->type);
647 ret = -EINVAL;
648 goto cleanup;
649 }
650
651 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
652
653 ret = part;
654 goto cleanup;
655
656 cleanup:
657 free(dup_str);
658 return ret;
659 }
660
part_get_info_by_name_type(struct blk_desc * dev_desc,const char * name,struct disk_partition * info,int part_type)661 int part_get_info_by_name_type(struct blk_desc *dev_desc, const char *name,
662 struct disk_partition *info, int part_type)
663 {
664 struct part_driver *part_drv;
665 int ret;
666 int i;
667
668 part_drv = part_driver_lookup_type(dev_desc);
669 if (!part_drv)
670 return -1;
671 for (i = 1; i < part_drv->max_entries; i++) {
672 ret = part_drv->get_info(dev_desc, i, info);
673 if (ret != 0) {
674 /* no more entries in table */
675 break;
676 }
677 if (strcmp(name, (const char *)info->name) == 0) {
678 /* matched */
679 return i;
680 }
681 }
682
683 return -ENOENT;
684 }
685
part_get_info_by_name(struct blk_desc * dev_desc,const char * name,struct disk_partition * info)686 int part_get_info_by_name(struct blk_desc *dev_desc, const char *name,
687 struct disk_partition *info)
688 {
689 return part_get_info_by_name_type(dev_desc, name, info, PART_TYPE_ALL);
690 }
691
692 /**
693 * Get partition info from device number and partition name.
694 *
695 * Parse a device number and partition name string in the form of
696 * "devicenum.hwpartnum#partition_name", for example "0.1#misc". devicenum and
697 * hwpartnum are both optional, defaulting to 0. If the partition is found,
698 * sets dev_desc and part_info accordingly with the information of the
699 * partition with the given partition_name.
700 *
701 * @param[in] dev_iface Device interface
702 * @param[in] dev_part_str Input string argument, like "0.1#misc"
703 * @param[out] dev_desc Place to store the device description pointer
704 * @param[out] part_info Place to store the partition information
705 * @return 0 on success, or a negative on error
706 */
part_get_info_by_dev_and_name(const char * dev_iface,const char * dev_part_str,struct blk_desc ** dev_desc,struct disk_partition * part_info)707 static int part_get_info_by_dev_and_name(const char *dev_iface,
708 const char *dev_part_str,
709 struct blk_desc **dev_desc,
710 struct disk_partition *part_info)
711 {
712 char *dup_str = NULL;
713 const char *dev_str, *part_str;
714 int ret;
715
716 /* Separate device and partition name specification */
717 part_str = strchr(dev_part_str, '#');
718 if (part_str) {
719 dup_str = strdup(dev_part_str);
720 dup_str[part_str - dev_part_str] = 0;
721 dev_str = dup_str;
722 part_str++;
723 } else {
724 return -EINVAL;
725 }
726
727 ret = blk_get_device_by_str(dev_iface, dev_str, dev_desc);
728 if (ret)
729 goto cleanup;
730
731 ret = part_get_info_by_name(*dev_desc, part_str, part_info);
732 if (ret < 0)
733 printf("Could not find \"%s\" partition\n", part_str);
734
735 cleanup:
736 free(dup_str);
737 return ret;
738 }
739
part_get_info_by_dev_and_name_or_num(const char * dev_iface,const char * dev_part_str,struct blk_desc ** dev_desc,struct disk_partition * part_info,int allow_whole_dev)740 int part_get_info_by_dev_and_name_or_num(const char *dev_iface,
741 const char *dev_part_str,
742 struct blk_desc **dev_desc,
743 struct disk_partition *part_info,
744 int allow_whole_dev)
745 {
746 int ret;
747
748 /* Split the part_name if passed as "$dev_num#part_name". */
749 ret = part_get_info_by_dev_and_name(dev_iface, dev_part_str,
750 dev_desc, part_info);
751 if (ret >= 0)
752 return ret;
753 /*
754 * Couldn't lookup by name, try looking up the partition description
755 * directly.
756 */
757 ret = blk_get_device_part_str(dev_iface, dev_part_str,
758 dev_desc, part_info, allow_whole_dev);
759 if (ret < 0)
760 printf("Couldn't find partition %s %s\n",
761 dev_iface, dev_part_str);
762 return ret;
763 }
764
part_set_generic_name(const struct blk_desc * dev_desc,int part_num,char * name)765 void part_set_generic_name(const struct blk_desc *dev_desc,
766 int part_num, char *name)
767 {
768 char *devtype;
769
770 switch (dev_desc->if_type) {
771 case IF_TYPE_IDE:
772 case IF_TYPE_SATA:
773 case IF_TYPE_ATAPI:
774 devtype = "hd";
775 break;
776 case IF_TYPE_SCSI:
777 devtype = "sd";
778 break;
779 case IF_TYPE_USB:
780 devtype = "usbd";
781 break;
782 case IF_TYPE_DOC:
783 devtype = "docd";
784 break;
785 case IF_TYPE_MMC:
786 case IF_TYPE_SD:
787 devtype = "mmcsd";
788 break;
789 default:
790 devtype = "xx";
791 break;
792 }
793
794 sprintf(name, "%s%c%d", devtype, 'a' + dev_desc->devnum, part_num);
795 }
796