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1 | /* | |
2 | * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0 | |
5 | */ | |
6 | ||
7 | #include <config.h> | |
8 | #include <errno.h> | |
9 | #include <common.h> | |
10 | #include <mapmem.h> | |
11 | #include <part.h> | |
12 | #include <ext4fs.h> | |
13 | #include <fat.h> | |
14 | #include <fs.h> | |
15 | #include <sandboxfs.h> | |
16 | #include <ubifs_uboot.h> | |
17 | #include <btrfs.h> | |
18 | #include <asm/io.h> | |
19 | #include <div64.h> | |
20 | #include <linux/math64.h> | |
21 | ||
22 | DECLARE_GLOBAL_DATA_PTR; | |
23 | ||
24 | static struct blk_desc *fs_dev_desc; | |
25 | static int fs_dev_part; | |
26 | static disk_partition_t fs_partition; | |
27 | static int fs_type = FS_TYPE_ANY; | |
28 | ||
29 | static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc, | |
30 | disk_partition_t *fs_partition) | |
31 | { | |
32 | printf("** Unrecognized filesystem type **\n"); | |
33 | return -1; | |
34 | } | |
35 | ||
36 | static inline int fs_ls_unsupported(const char *dirname) | |
37 | { | |
38 | return -1; | |
39 | } | |
40 | ||
41 | /* generic implementation of ls in terms of opendir/readdir/closedir */ | |
42 | __maybe_unused | |
43 | static int fs_ls_generic(const char *dirname) | |
44 | { | |
45 | struct fs_dir_stream *dirs; | |
46 | struct fs_dirent *dent; | |
47 | int nfiles = 0, ndirs = 0; | |
48 | ||
49 | dirs = fs_opendir(dirname); | |
50 | if (!dirs) | |
51 | return -errno; | |
52 | ||
53 | while ((dent = fs_readdir(dirs))) { | |
54 | if (dent->type == FS_DT_DIR) { | |
55 | printf(" %s/\n", dent->name); | |
56 | ndirs++; | |
57 | } else { | |
58 | printf(" %8lld %s\n", dent->size, dent->name); | |
59 | nfiles++; | |
60 | } | |
61 | } | |
62 | ||
63 | fs_closedir(dirs); | |
64 | ||
65 | printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs); | |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
70 | static inline int fs_exists_unsupported(const char *filename) | |
71 | { | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static inline int fs_size_unsupported(const char *filename, loff_t *size) | |
76 | { | |
77 | return -1; | |
78 | } | |
79 | ||
80 | static inline int fs_read_unsupported(const char *filename, void *buf, | |
81 | loff_t offset, loff_t len, | |
82 | loff_t *actread) | |
83 | { | |
84 | return -1; | |
85 | } | |
86 | ||
87 | static inline int fs_write_unsupported(const char *filename, void *buf, | |
88 | loff_t offset, loff_t len, | |
89 | loff_t *actwrite) | |
90 | { | |
91 | return -1; | |
92 | } | |
93 | ||
94 | static inline void fs_close_unsupported(void) | |
95 | { | |
96 | } | |
97 | ||
98 | static inline int fs_uuid_unsupported(char *uuid_str) | |
99 | { | |
100 | return -1; | |
101 | } | |
102 | ||
103 | static inline int fs_opendir_unsupported(const char *filename, | |
104 | struct fs_dir_stream **dirs) | |
105 | { | |
106 | return -EACCES; | |
107 | } | |
108 | ||
109 | struct fstype_info { | |
110 | int fstype; | |
111 | char *name; | |
112 | /* | |
113 | * Is it legal to pass NULL as .probe()'s fs_dev_desc parameter? This | |
114 | * should be false in most cases. For "virtual" filesystems which | |
115 | * aren't based on a U-Boot block device (e.g. sandbox), this can be | |
116 | * set to true. This should also be true for the dumm entry at the end | |
117 | * of fstypes[], since that is essentially a "virtual" (non-existent) | |
118 | * filesystem. | |
119 | */ | |
120 | bool null_dev_desc_ok; | |
121 | int (*probe)(struct blk_desc *fs_dev_desc, | |
122 | disk_partition_t *fs_partition); | |
123 | int (*ls)(const char *dirname); | |
124 | int (*exists)(const char *filename); | |
125 | int (*size)(const char *filename, loff_t *size); | |
126 | int (*read)(const char *filename, void *buf, loff_t offset, | |
127 | loff_t len, loff_t *actread); | |
128 | int (*write)(const char *filename, void *buf, loff_t offset, | |
129 | loff_t len, loff_t *actwrite); | |
130 | void (*close)(void); | |
131 | int (*uuid)(char *uuid_str); | |
132 | /* | |
133 | * Open a directory stream. On success return 0 and directory | |
134 | * stream pointer via 'dirsp'. On error, return -errno. See | |
135 | * fs_opendir(). | |
136 | */ | |
137 | int (*opendir)(const char *filename, struct fs_dir_stream **dirsp); | |
138 | /* | |
139 | * Read next entry from directory stream. On success return 0 | |
140 | * and directory entry pointer via 'dentp'. On error return | |
141 | * -errno. See fs_readdir(). | |
142 | */ | |
143 | int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp); | |
144 | /* see fs_closedir() */ | |
145 | void (*closedir)(struct fs_dir_stream *dirs); | |
146 | }; | |
147 | ||
148 | static struct fstype_info fstypes[] = { | |
149 | #ifdef CONFIG_FS_FAT | |
150 | { | |
151 | .fstype = FS_TYPE_FAT, | |
152 | .name = "fat", | |
153 | .null_dev_desc_ok = false, | |
154 | .probe = fat_set_blk_dev, | |
155 | .close = fat_close, | |
156 | .ls = fs_ls_generic, | |
157 | .exists = fat_exists, | |
158 | .size = fat_size, | |
159 | .read = fat_read_file, | |
160 | #ifdef CONFIG_FAT_WRITE | |
161 | .write = file_fat_write, | |
162 | #else | |
163 | .write = fs_write_unsupported, | |
164 | #endif | |
165 | .uuid = fs_uuid_unsupported, | |
166 | .opendir = fat_opendir, | |
167 | .readdir = fat_readdir, | |
168 | .closedir = fat_closedir, | |
169 | }, | |
170 | #endif | |
171 | #ifdef CONFIG_FS_EXT4 | |
172 | { | |
173 | .fstype = FS_TYPE_EXT, | |
174 | .name = "ext4", | |
175 | .null_dev_desc_ok = false, | |
176 | .probe = ext4fs_probe, | |
177 | .close = ext4fs_close, | |
178 | .ls = ext4fs_ls, | |
179 | .exists = ext4fs_exists, | |
180 | .size = ext4fs_size, | |
181 | .read = ext4_read_file, | |
182 | #ifdef CONFIG_CMD_EXT4_WRITE | |
183 | .write = ext4_write_file, | |
184 | #else | |
185 | .write = fs_write_unsupported, | |
186 | #endif | |
187 | .uuid = ext4fs_uuid, | |
188 | .opendir = fs_opendir_unsupported, | |
189 | }, | |
190 | #endif | |
191 | #ifdef CONFIG_SANDBOX | |
192 | { | |
193 | .fstype = FS_TYPE_SANDBOX, | |
194 | .name = "sandbox", | |
195 | .null_dev_desc_ok = true, | |
196 | .probe = sandbox_fs_set_blk_dev, | |
197 | .close = sandbox_fs_close, | |
198 | .ls = sandbox_fs_ls, | |
199 | .exists = sandbox_fs_exists, | |
200 | .size = sandbox_fs_size, | |
201 | .read = fs_read_sandbox, | |
202 | .write = fs_write_sandbox, | |
203 | .uuid = fs_uuid_unsupported, | |
204 | .opendir = fs_opendir_unsupported, | |
205 | }, | |
206 | #endif | |
207 | #ifdef CONFIG_CMD_UBIFS | |
208 | { | |
209 | .fstype = FS_TYPE_UBIFS, | |
210 | .name = "ubifs", | |
211 | .null_dev_desc_ok = true, | |
212 | .probe = ubifs_set_blk_dev, | |
213 | .close = ubifs_close, | |
214 | .ls = ubifs_ls, | |
215 | .exists = ubifs_exists, | |
216 | .size = ubifs_size, | |
217 | .read = ubifs_read, | |
218 | .write = fs_write_unsupported, | |
219 | .uuid = fs_uuid_unsupported, | |
220 | .opendir = fs_opendir_unsupported, | |
221 | }, | |
222 | #endif | |
223 | #ifdef CONFIG_FS_BTRFS | |
224 | { | |
225 | .fstype = FS_TYPE_BTRFS, | |
226 | .name = "btrfs", | |
227 | .null_dev_desc_ok = false, | |
228 | .probe = btrfs_probe, | |
229 | .close = btrfs_close, | |
230 | .ls = btrfs_ls, | |
231 | .exists = btrfs_exists, | |
232 | .size = btrfs_size, | |
233 | .read = btrfs_read, | |
234 | .write = fs_write_unsupported, | |
235 | .uuid = btrfs_uuid, | |
236 | .opendir = fs_opendir_unsupported, | |
237 | }, | |
238 | #endif | |
239 | { | |
240 | .fstype = FS_TYPE_ANY, | |
241 | .name = "unsupported", | |
242 | .null_dev_desc_ok = true, | |
243 | .probe = fs_probe_unsupported, | |
244 | .close = fs_close_unsupported, | |
245 | .ls = fs_ls_unsupported, | |
246 | .exists = fs_exists_unsupported, | |
247 | .size = fs_size_unsupported, | |
248 | .read = fs_read_unsupported, | |
249 | .write = fs_write_unsupported, | |
250 | .uuid = fs_uuid_unsupported, | |
251 | .opendir = fs_opendir_unsupported, | |
252 | }, | |
253 | }; | |
254 | ||
255 | static struct fstype_info *fs_get_info(int fstype) | |
256 | { | |
257 | struct fstype_info *info; | |
258 | int i; | |
259 | ||
260 | for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) { | |
261 | if (fstype == info->fstype) | |
262 | return info; | |
263 | } | |
264 | ||
265 | /* Return the 'unsupported' sentinel */ | |
266 | return info; | |
267 | } | |
268 | ||
269 | int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype) | |
270 | { | |
271 | struct fstype_info *info; | |
272 | int part, i; | |
273 | #ifdef CONFIG_NEEDS_MANUAL_RELOC | |
274 | static int relocated; | |
275 | ||
276 | if (!relocated) { | |
277 | for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); | |
278 | i++, info++) { | |
279 | info->name += gd->reloc_off; | |
280 | info->probe += gd->reloc_off; | |
281 | info->close += gd->reloc_off; | |
282 | info->ls += gd->reloc_off; | |
283 | info->read += gd->reloc_off; | |
284 | info->write += gd->reloc_off; | |
285 | } | |
286 | relocated = 1; | |
287 | } | |
288 | #endif | |
289 | ||
290 | part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc, | |
291 | &fs_partition, 1); | |
292 | if (part < 0) | |
293 | return -1; | |
294 | ||
295 | for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) { | |
296 | if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY && | |
297 | fstype != info->fstype) | |
298 | continue; | |
299 | ||
300 | if (!fs_dev_desc && !info->null_dev_desc_ok) | |
301 | continue; | |
302 | ||
303 | if (!info->probe(fs_dev_desc, &fs_partition)) { | |
304 | fs_type = info->fstype; | |
305 | fs_dev_part = part; | |
306 | return 0; | |
307 | } | |
308 | } | |
309 | ||
310 | return -1; | |
311 | } | |
312 | ||
313 | /* set current blk device w/ blk_desc + partition # */ | |
314 | int fs_set_blk_dev_with_part(struct blk_desc *desc, int part) | |
315 | { | |
316 | struct fstype_info *info; | |
317 | int ret, i; | |
318 | ||
319 | if (part >= 1) | |
320 | ret = part_get_info(desc, part, &fs_partition); | |
321 | else | |
322 | ret = part_get_info_whole_disk(desc, &fs_partition); | |
323 | if (ret) | |
324 | return ret; | |
325 | fs_dev_desc = desc; | |
326 | ||
327 | for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) { | |
328 | if (!info->probe(fs_dev_desc, &fs_partition)) { | |
329 | fs_type = info->fstype; | |
330 | return 0; | |
331 | } | |
332 | } | |
333 | ||
334 | return -1; | |
335 | } | |
336 | ||
337 | static void fs_close(void) | |
338 | { | |
339 | struct fstype_info *info = fs_get_info(fs_type); | |
340 | ||
341 | info->close(); | |
342 | ||
343 | fs_type = FS_TYPE_ANY; | |
344 | } | |
345 | ||
346 | int fs_uuid(char *uuid_str) | |
347 | { | |
348 | struct fstype_info *info = fs_get_info(fs_type); | |
349 | ||
350 | return info->uuid(uuid_str); | |
351 | } | |
352 | ||
353 | int fs_ls(const char *dirname) | |
354 | { | |
355 | int ret; | |
356 | ||
357 | struct fstype_info *info = fs_get_info(fs_type); | |
358 | ||
359 | ret = info->ls(dirname); | |
360 | ||
361 | fs_type = FS_TYPE_ANY; | |
362 | fs_close(); | |
363 | ||
364 | return ret; | |
365 | } | |
366 | ||
367 | int fs_exists(const char *filename) | |
368 | { | |
369 | int ret; | |
370 | ||
371 | struct fstype_info *info = fs_get_info(fs_type); | |
372 | ||
373 | ret = info->exists(filename); | |
374 | ||
375 | fs_close(); | |
376 | ||
377 | return ret; | |
378 | } | |
379 | ||
380 | int fs_size(const char *filename, loff_t *size) | |
381 | { | |
382 | int ret; | |
383 | ||
384 | struct fstype_info *info = fs_get_info(fs_type); | |
385 | ||
386 | ret = info->size(filename, size); | |
387 | ||
388 | fs_close(); | |
389 | ||
390 | return ret; | |
391 | } | |
392 | ||
393 | int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len, | |
394 | loff_t *actread) | |
395 | { | |
396 | struct fstype_info *info = fs_get_info(fs_type); | |
397 | void *buf; | |
398 | int ret; | |
399 | ||
400 | /* | |
401 | * We don't actually know how many bytes are being read, since len==0 | |
402 | * means read the whole file. | |
403 | */ | |
404 | buf = map_sysmem(addr, len); | |
405 | ret = info->read(filename, buf, offset, len, actread); | |
406 | unmap_sysmem(buf); | |
407 | ||
408 | /* If we requested a specific number of bytes, check we got it */ | |
409 | if (ret == 0 && len && *actread != len) | |
410 | debug("** %s shorter than offset + len **\n", filename); | |
411 | fs_close(); | |
412 | ||
413 | return ret; | |
414 | } | |
415 | ||
416 | int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len, | |
417 | loff_t *actwrite) | |
418 | { | |
419 | struct fstype_info *info = fs_get_info(fs_type); | |
420 | void *buf; | |
421 | int ret; | |
422 | ||
423 | buf = map_sysmem(addr, len); | |
424 | ret = info->write(filename, buf, offset, len, actwrite); | |
425 | unmap_sysmem(buf); | |
426 | ||
427 | if (ret < 0 && len != *actwrite) { | |
428 | printf("** Unable to write file %s **\n", filename); | |
429 | ret = -1; | |
430 | } | |
431 | fs_close(); | |
432 | ||
433 | return ret; | |
434 | } | |
435 | ||
436 | struct fs_dir_stream *fs_opendir(const char *filename) | |
437 | { | |
438 | struct fstype_info *info = fs_get_info(fs_type); | |
439 | struct fs_dir_stream *dirs = NULL; | |
440 | int ret; | |
441 | ||
442 | ret = info->opendir(filename, &dirs); | |
443 | fs_close(); | |
444 | if (ret) { | |
445 | errno = -ret; | |
446 | return NULL; | |
447 | } | |
448 | ||
449 | dirs->desc = fs_dev_desc; | |
450 | dirs->part = fs_dev_part; | |
451 | ||
452 | return dirs; | |
453 | } | |
454 | ||
455 | struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs) | |
456 | { | |
457 | struct fstype_info *info; | |
458 | struct fs_dirent *dirent; | |
459 | int ret; | |
460 | ||
461 | fs_set_blk_dev_with_part(dirs->desc, dirs->part); | |
462 | info = fs_get_info(fs_type); | |
463 | ||
464 | ret = info->readdir(dirs, &dirent); | |
465 | fs_close(); | |
466 | if (ret) { | |
467 | errno = -ret; | |
468 | return NULL; | |
469 | } | |
470 | ||
471 | return dirent; | |
472 | } | |
473 | ||
474 | void fs_closedir(struct fs_dir_stream *dirs) | |
475 | { | |
476 | struct fstype_info *info; | |
477 | ||
478 | if (!dirs) | |
479 | return; | |
480 | ||
481 | fs_set_blk_dev_with_part(dirs->desc, dirs->part); | |
482 | info = fs_get_info(fs_type); | |
483 | ||
484 | info->closedir(dirs); | |
485 | fs_close(); | |
486 | } | |
487 | ||
488 | ||
489 | int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], | |
490 | int fstype) | |
491 | { | |
492 | loff_t size; | |
493 | ||
494 | if (argc != 4) | |
495 | return CMD_RET_USAGE; | |
496 | ||
497 | if (fs_set_blk_dev(argv[1], argv[2], fstype)) | |
498 | return 1; | |
499 | ||
500 | if (fs_size(argv[3], &size) < 0) | |
501 | return CMD_RET_FAILURE; | |
502 | ||
503 | env_set_hex("filesize", size); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], | |
509 | int fstype) | |
510 | { | |
511 | unsigned long addr; | |
512 | const char *addr_str; | |
513 | const char *filename; | |
514 | loff_t bytes; | |
515 | loff_t pos; | |
516 | loff_t len_read; | |
517 | int ret; | |
518 | unsigned long time; | |
519 | char *ep; | |
520 | ||
521 | if (argc < 2) | |
522 | return CMD_RET_USAGE; | |
523 | if (argc > 7) | |
524 | return CMD_RET_USAGE; | |
525 | ||
526 | if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype)) | |
527 | return 1; | |
528 | ||
529 | if (argc >= 4) { | |
530 | addr = simple_strtoul(argv[3], &ep, 16); | |
531 | if (ep == argv[3] || *ep != '\0') | |
532 | return CMD_RET_USAGE; | |
533 | } else { | |
534 | addr_str = env_get("loadaddr"); | |
535 | if (addr_str != NULL) | |
536 | addr = simple_strtoul(addr_str, NULL, 16); | |
537 | else | |
538 | addr = CONFIG_SYS_LOAD_ADDR; | |
539 | } | |
540 | if (argc >= 5) { | |
541 | filename = argv[4]; | |
542 | } else { | |
543 | filename = env_get("bootfile"); | |
544 | if (!filename) { | |
545 | puts("** No boot file defined **\n"); | |
546 | return 1; | |
547 | } | |
548 | } | |
549 | if (argc >= 6) | |
550 | bytes = simple_strtoul(argv[5], NULL, 16); | |
551 | else | |
552 | bytes = 0; | |
553 | if (argc >= 7) | |
554 | pos = simple_strtoul(argv[6], NULL, 16); | |
555 | else | |
556 | pos = 0; | |
557 | ||
558 | time = get_timer(0); | |
559 | ret = fs_read(filename, addr, pos, bytes, &len_read); | |
560 | time = get_timer(time); | |
561 | if (ret < 0) | |
562 | return 1; | |
563 | ||
564 | printf("%llu bytes read in %lu ms", len_read, time); | |
565 | if (time > 0) { | |
566 | puts(" ("); | |
567 | print_size(div_u64(len_read, time) * 1000, "/s"); | |
568 | puts(")"); | |
569 | } | |
570 | puts("\n"); | |
571 | ||
572 | env_set_hex("fileaddr", addr); | |
573 | env_set_hex("filesize", len_read); | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
578 | int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], | |
579 | int fstype) | |
580 | { | |
581 | if (argc < 2) | |
582 | return CMD_RET_USAGE; | |
583 | if (argc > 4) | |
584 | return CMD_RET_USAGE; | |
585 | ||
586 | if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype)) | |
587 | return 1; | |
588 | ||
589 | if (fs_ls(argc >= 4 ? argv[3] : "/")) | |
590 | return 1; | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
595 | int file_exists(const char *dev_type, const char *dev_part, const char *file, | |
596 | int fstype) | |
597 | { | |
598 | if (fs_set_blk_dev(dev_type, dev_part, fstype)) | |
599 | return 0; | |
600 | ||
601 | return fs_exists(file); | |
602 | } | |
603 | ||
604 | int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], | |
605 | int fstype) | |
606 | { | |
607 | unsigned long addr; | |
608 | const char *filename; | |
609 | loff_t bytes; | |
610 | loff_t pos; | |
611 | loff_t len; | |
612 | int ret; | |
613 | unsigned long time; | |
614 | ||
615 | if (argc < 6 || argc > 7) | |
616 | return CMD_RET_USAGE; | |
617 | ||
618 | if (fs_set_blk_dev(argv[1], argv[2], fstype)) | |
619 | return 1; | |
620 | ||
621 | addr = simple_strtoul(argv[3], NULL, 16); | |
622 | filename = argv[4]; | |
623 | bytes = simple_strtoul(argv[5], NULL, 16); | |
624 | if (argc >= 7) | |
625 | pos = simple_strtoul(argv[6], NULL, 16); | |
626 | else | |
627 | pos = 0; | |
628 | ||
629 | time = get_timer(0); | |
630 | ret = fs_write(filename, addr, pos, bytes, &len); | |
631 | time = get_timer(time); | |
632 | if (ret < 0) | |
633 | return 1; | |
634 | ||
635 | printf("%llu bytes written in %lu ms", len, time); | |
636 | if (time > 0) { | |
637 | puts(" ("); | |
638 | print_size(div_u64(len, time) * 1000, "/s"); | |
639 | puts(")"); | |
640 | } | |
641 | puts("\n"); | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], | |
647 | int fstype) | |
648 | { | |
649 | int ret; | |
650 | char uuid[37]; | |
651 | memset(uuid, 0, sizeof(uuid)); | |
652 | ||
653 | if (argc < 3 || argc > 4) | |
654 | return CMD_RET_USAGE; | |
655 | ||
656 | if (fs_set_blk_dev(argv[1], argv[2], fstype)) | |
657 | return 1; | |
658 | ||
659 | ret = fs_uuid(uuid); | |
660 | if (ret) | |
661 | return CMD_RET_FAILURE; | |
662 | ||
663 | if (argc == 4) | |
664 | env_set(argv[3], uuid); | |
665 | else | |
666 | printf("%s\n", uuid); | |
667 | ||
668 | return CMD_RET_SUCCESS; | |
669 | } | |
670 | ||
671 | int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
672 | { | |
673 | struct fstype_info *info; | |
674 | ||
675 | if (argc < 3 || argc > 4) | |
676 | return CMD_RET_USAGE; | |
677 | ||
678 | if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY)) | |
679 | return 1; | |
680 | ||
681 | info = fs_get_info(fs_type); | |
682 | ||
683 | if (argc == 4) | |
684 | env_set(argv[3], info->name); | |
685 | else | |
686 | printf("%s\n", info->name); | |
687 | ||
688 | return CMD_RET_SUCCESS; | |
689 | } | |
690 |