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ubifs: Add functions for generic fs use
[people/ms/u-boot.git] / fs / fs.c
CommitLineData
045fa1e1
SW
1/*
2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <config.h>
59e890ef 18#include <errno.h>
045fa1e1 19#include <common.h>
0eb25b61 20#include <mapmem.h>
045fa1e1
SW
21#include <part.h>
22#include <ext4fs.h>
23#include <fat.h>
24#include <fs.h>
92ccc96b 25#include <sandboxfs.h>
117e0507 26#include <asm/io.h>
9e374e7b
TR
27#include <div64.h>
28#include <linux/math64.h>
045fa1e1 29
a1b231ce
SW
30DECLARE_GLOBAL_DATA_PTR;
31
045fa1e1
SW
32static block_dev_desc_t *fs_dev_desc;
33static disk_partition_t fs_partition;
34static int fs_type = FS_TYPE_ANY;
35
2ded0d47
SG
36static inline int fs_probe_unsupported(block_dev_desc_t *fs_dev_desc,
37 disk_partition_t *fs_partition)
436e2b73
SG
38{
39 printf("** Unrecognized filesystem type **\n");
40 return -1;
41}
42
045fa1e1
SW
43static inline int fs_ls_unsupported(const char *dirname)
44{
045fa1e1
SW
45 return -1;
46}
47
6152916a
SW
48static inline int fs_exists_unsupported(const char *filename)
49{
50 return 0;
51}
52
d455d878 53static inline int fs_size_unsupported(const char *filename, loff_t *size)
cf659819
SW
54{
55 return -1;
56}
57
117e0507 58static inline int fs_read_unsupported(const char *filename, void *buf,
d455d878
SR
59 loff_t offset, loff_t len,
60 loff_t *actread)
045fa1e1 61{
045fa1e1
SW
62 return -1;
63}
64
a8f6ab52 65static inline int fs_write_unsupported(const char *filename, void *buf,
d455d878
SR
66 loff_t offset, loff_t len,
67 loff_t *actwrite)
a8f6ab52
SG
68{
69 return -1;
70}
71
436e2b73
SG
72static inline void fs_close_unsupported(void)
73{
74}
75
59e890ef
CG
76static inline int fs_uuid_unsupported(char *uuid_str)
77{
78 return -1;
79}
80
436e2b73 81struct fstype_info {
045fa1e1 82 int fstype;
1a1ad8e0 83 char *name;
377202b5
SW
84 /*
85 * Is it legal to pass NULL as .probe()'s fs_dev_desc parameter? This
86 * should be false in most cases. For "virtual" filesystems which
87 * aren't based on a U-Boot block device (e.g. sandbox), this can be
88 * set to true. This should also be true for the dumm entry at the end
89 * of fstypes[], since that is essentially a "virtual" (non-existent)
90 * filesystem.
91 */
92 bool null_dev_desc_ok;
2ded0d47
SG
93 int (*probe)(block_dev_desc_t *fs_dev_desc,
94 disk_partition_t *fs_partition);
436e2b73 95 int (*ls)(const char *dirname);
6152916a 96 int (*exists)(const char *filename);
d455d878
SR
97 int (*size)(const char *filename, loff_t *size);
98 int (*read)(const char *filename, void *buf, loff_t offset,
99 loff_t len, loff_t *actread);
100 int (*write)(const char *filename, void *buf, loff_t offset,
101 loff_t len, loff_t *actwrite);
436e2b73 102 void (*close)(void);
59e890ef 103 int (*uuid)(char *uuid_str);
436e2b73
SG
104};
105
106static struct fstype_info fstypes[] = {
107#ifdef CONFIG_FS_FAT
045fa1e1
SW
108 {
109 .fstype = FS_TYPE_FAT,
1a1ad8e0 110 .name = "fat",
377202b5 111 .null_dev_desc_ok = false,
e6d52415
SG
112 .probe = fat_set_blk_dev,
113 .close = fat_close,
436e2b73 114 .ls = file_fat_ls,
b7b5f319 115 .exists = fat_exists,
cf659819 116 .size = fat_size,
e6d52415 117 .read = fat_read_file,
d455d878
SR
118#ifdef CONFIG_FAT_WRITE
119 .write = file_fat_write,
120#else
bd6fb31f 121 .write = fs_write_unsupported,
d455d878 122#endif
59e890ef 123 .uuid = fs_uuid_unsupported,
045fa1e1 124 },
436e2b73
SG
125#endif
126#ifdef CONFIG_FS_EXT4
045fa1e1
SW
127 {
128 .fstype = FS_TYPE_EXT,
1a1ad8e0 129 .name = "ext4",
377202b5 130 .null_dev_desc_ok = false,
e6d52415
SG
131 .probe = ext4fs_probe,
132 .close = ext4fs_close,
436e2b73 133 .ls = ext4fs_ls,
55af5c93 134 .exists = ext4fs_exists,
cf659819 135 .size = ext4fs_size,
e6d52415 136 .read = ext4_read_file,
d455d878
SR
137#ifdef CONFIG_CMD_EXT4_WRITE
138 .write = ext4_write_file,
139#else
bd6fb31f 140 .write = fs_write_unsupported,
d455d878 141#endif
59e890ef 142 .uuid = ext4fs_uuid,
436e2b73 143 },
92ccc96b
SG
144#endif
145#ifdef CONFIG_SANDBOX
146 {
147 .fstype = FS_TYPE_SANDBOX,
1a1ad8e0 148 .name = "sandbox",
377202b5 149 .null_dev_desc_ok = true,
92ccc96b
SG
150 .probe = sandbox_fs_set_blk_dev,
151 .close = sandbox_fs_close,
152 .ls = sandbox_fs_ls,
0a30aa1e 153 .exists = sandbox_fs_exists,
cf659819 154 .size = sandbox_fs_size,
92ccc96b 155 .read = fs_read_sandbox,
7eb2c8d5 156 .write = fs_write_sandbox,
59e890ef 157 .uuid = fs_uuid_unsupported,
92ccc96b 158 },
436e2b73
SG
159#endif
160 {
161 .fstype = FS_TYPE_ANY,
1a1ad8e0 162 .name = "unsupported",
377202b5 163 .null_dev_desc_ok = true,
436e2b73
SG
164 .probe = fs_probe_unsupported,
165 .close = fs_close_unsupported,
166 .ls = fs_ls_unsupported,
6152916a 167 .exists = fs_exists_unsupported,
cf659819 168 .size = fs_size_unsupported,
436e2b73 169 .read = fs_read_unsupported,
a8f6ab52 170 .write = fs_write_unsupported,
59e890ef 171 .uuid = fs_uuid_unsupported,
045fa1e1
SW
172 },
173};
174
c6f548d2
SG
175static struct fstype_info *fs_get_info(int fstype)
176{
177 struct fstype_info *info;
178 int i;
179
180 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
181 if (fstype == info->fstype)
182 return info;
183 }
184
185 /* Return the 'unsupported' sentinel */
186 return info;
187}
188
045fa1e1
SW
189int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
190{
436e2b73 191 struct fstype_info *info;
045fa1e1 192 int part, i;
a1b231ce
SW
193#ifdef CONFIG_NEEDS_MANUAL_RELOC
194 static int relocated;
195
196 if (!relocated) {
436e2b73
SG
197 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
198 i++, info++) {
1a1ad8e0 199 info->name += gd->reloc_off;
436e2b73
SG
200 info->probe += gd->reloc_off;
201 info->close += gd->reloc_off;
202 info->ls += gd->reloc_off;
203 info->read += gd->reloc_off;
a8f6ab52 204 info->write += gd->reloc_off;
436e2b73 205 }
a1b231ce
SW
206 relocated = 1;
207 }
208#endif
045fa1e1
SW
209
210 part = get_device_and_partition(ifname, dev_part_str, &fs_dev_desc,
211 &fs_partition, 1);
212 if (part < 0)
213 return -1;
214
436e2b73
SG
215 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
216 if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
217 fstype != info->fstype)
045fa1e1
SW
218 continue;
219
377202b5
SW
220 if (!fs_dev_desc && !info->null_dev_desc_ok)
221 continue;
222
2ded0d47 223 if (!info->probe(fs_dev_desc, &fs_partition)) {
436e2b73 224 fs_type = info->fstype;
045fa1e1
SW
225 return 0;
226 }
227 }
228
045fa1e1
SW
229 return -1;
230}
231
232static void fs_close(void)
233{
c6f548d2 234 struct fstype_info *info = fs_get_info(fs_type);
045fa1e1 235
c6f548d2 236 info->close();
e6d52415 237
045fa1e1
SW
238 fs_type = FS_TYPE_ANY;
239}
240
59e890ef
CG
241int fs_uuid(char *uuid_str)
242{
243 struct fstype_info *info = fs_get_info(fs_type);
244
245 return info->uuid(uuid_str);
246}
247
045fa1e1
SW
248int fs_ls(const char *dirname)
249{
250 int ret;
251
c6f548d2
SG
252 struct fstype_info *info = fs_get_info(fs_type);
253
254 ret = info->ls(dirname);
045fa1e1 255
e6d52415 256 fs_type = FS_TYPE_ANY;
045fa1e1
SW
257 fs_close();
258
259 return ret;
260}
261
6152916a
SW
262int fs_exists(const char *filename)
263{
264 int ret;
265
266 struct fstype_info *info = fs_get_info(fs_type);
267
268 ret = info->exists(filename);
269
270 fs_close();
271
272 return ret;
273}
274
d455d878 275int fs_size(const char *filename, loff_t *size)
cf659819
SW
276{
277 int ret;
278
279 struct fstype_info *info = fs_get_info(fs_type);
280
d455d878 281 ret = info->size(filename, size);
cf659819
SW
282
283 fs_close();
284
285 return ret;
286}
287
d455d878
SR
288int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
289 loff_t *actread)
045fa1e1 290{
c6f548d2 291 struct fstype_info *info = fs_get_info(fs_type);
117e0507 292 void *buf;
045fa1e1
SW
293 int ret;
294
117e0507
SG
295 /*
296 * We don't actually know how many bytes are being read, since len==0
297 * means read the whole file.
298 */
299 buf = map_sysmem(addr, len);
d455d878 300 ret = info->read(filename, buf, offset, len, actread);
117e0507 301 unmap_sysmem(buf);
045fa1e1 302
c6f548d2 303 /* If we requested a specific number of bytes, check we got it */
7a3e70cf
MK
304 if (ret == 0 && len && *actread != len)
305 printf("** %s shorter than offset + len **\n", filename);
045fa1e1
SW
306 fs_close();
307
308 return ret;
309}
310
d455d878
SR
311int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
312 loff_t *actwrite)
a8f6ab52
SG
313{
314 struct fstype_info *info = fs_get_info(fs_type);
315 void *buf;
316 int ret;
317
a8f6ab52 318 buf = map_sysmem(addr, len);
d455d878 319 ret = info->write(filename, buf, offset, len, actwrite);
a8f6ab52
SG
320 unmap_sysmem(buf);
321
d455d878 322 if (ret < 0 && len != *actwrite) {
a8f6ab52
SG
323 printf("** Unable to write file %s **\n", filename);
324 ret = -1;
325 }
326 fs_close();
327
328 return ret;
329}
330
cf659819
SW
331int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
332 int fstype)
333{
d455d878 334 loff_t size;
cf659819
SW
335
336 if (argc != 4)
337 return CMD_RET_USAGE;
338
339 if (fs_set_blk_dev(argv[1], argv[2], fstype))
340 return 1;
341
d455d878 342 if (fs_size(argv[3], &size) < 0)
cf659819
SW
343 return CMD_RET_FAILURE;
344
345 setenv_hex("filesize", size);
346
347 return 0;
348}
349
f9b55e22 350int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
b770e88a 351 int fstype)
045fa1e1
SW
352{
353 unsigned long addr;
354 const char *addr_str;
355 const char *filename;
d455d878
SR
356 loff_t bytes;
357 loff_t pos;
358 loff_t len_read;
359 int ret;
da1fd96c 360 unsigned long time;
949bbd7c 361 char *ep;
045fa1e1 362
e9b0f99e
SW
363 if (argc < 2)
364 return CMD_RET_USAGE;
365 if (argc > 7)
045fa1e1
SW
366 return CMD_RET_USAGE;
367
e9b0f99e 368 if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
045fa1e1
SW
369 return 1;
370
371 if (argc >= 4) {
949bbd7c
PM
372 addr = simple_strtoul(argv[3], &ep, 16);
373 if (ep == argv[3] || *ep != '\0')
374 return CMD_RET_USAGE;
045fa1e1
SW
375 } else {
376 addr_str = getenv("loadaddr");
377 if (addr_str != NULL)
378 addr = simple_strtoul(addr_str, NULL, 16);
379 else
380 addr = CONFIG_SYS_LOAD_ADDR;
381 }
382 if (argc >= 5) {
383 filename = argv[4];
384 } else {
385 filename = getenv("bootfile");
386 if (!filename) {
387 puts("** No boot file defined **\n");
388 return 1;
389 }
390 }
391 if (argc >= 6)
b770e88a 392 bytes = simple_strtoul(argv[5], NULL, 16);
045fa1e1
SW
393 else
394 bytes = 0;
395 if (argc >= 7)
b770e88a 396 pos = simple_strtoul(argv[6], NULL, 16);
045fa1e1
SW
397 else
398 pos = 0;
399
da1fd96c 400 time = get_timer(0);
d455d878 401 ret = fs_read(filename, addr, pos, bytes, &len_read);
da1fd96c 402 time = get_timer(time);
d455d878 403 if (ret < 0)
045fa1e1
SW
404 return 1;
405
d455d878 406 printf("%llu bytes read in %lu ms", len_read, time);
da1fd96c
AB
407 if (time > 0) {
408 puts(" (");
9e374e7b 409 print_size(div_u64(len_read, time) * 1000, "/s");
da1fd96c
AB
410 puts(")");
411 }
412 puts("\n");
045fa1e1 413
49c4f037 414 setenv_hex("filesize", len_read);
045fa1e1
SW
415
416 return 0;
417}
418
419int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
420 int fstype)
421{
422 if (argc < 2)
423 return CMD_RET_USAGE;
e9b0f99e
SW
424 if (argc > 4)
425 return CMD_RET_USAGE;
045fa1e1
SW
426
427 if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
428 return 1;
429
e9b0f99e 430 if (fs_ls(argc >= 4 ? argv[3] : "/"))
045fa1e1
SW
431 return 1;
432
433 return 0;
434}
a8f6ab52 435
6152916a
SW
436int file_exists(const char *dev_type, const char *dev_part, const char *file,
437 int fstype)
438{
439 if (fs_set_blk_dev(dev_type, dev_part, fstype))
440 return 0;
441
442 return fs_exists(file);
443}
444
a8f6ab52 445int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
b770e88a 446 int fstype)
a8f6ab52
SG
447{
448 unsigned long addr;
449 const char *filename;
d455d878
SR
450 loff_t bytes;
451 loff_t pos;
452 loff_t len;
453 int ret;
a8f6ab52
SG
454 unsigned long time;
455
456 if (argc < 6 || argc > 7)
457 return CMD_RET_USAGE;
458
459 if (fs_set_blk_dev(argv[1], argv[2], fstype))
460 return 1;
461
d455d878
SR
462 addr = simple_strtoul(argv[3], NULL, 16);
463 filename = argv[4];
b770e88a 464 bytes = simple_strtoul(argv[5], NULL, 16);
a8f6ab52 465 if (argc >= 7)
b770e88a 466 pos = simple_strtoul(argv[6], NULL, 16);
a8f6ab52
SG
467 else
468 pos = 0;
469
470 time = get_timer(0);
d455d878 471 ret = fs_write(filename, addr, pos, bytes, &len);
a8f6ab52 472 time = get_timer(time);
d455d878 473 if (ret < 0)
a8f6ab52
SG
474 return 1;
475
d455d878 476 printf("%llu bytes written in %lu ms", len, time);
a8f6ab52
SG
477 if (time > 0) {
478 puts(" (");
9e374e7b 479 print_size(div_u64(len, time) * 1000, "/s");
a8f6ab52
SG
480 puts(")");
481 }
482 puts("\n");
483
484 return 0;
485}
59e890ef
CG
486
487int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
488 int fstype)
489{
490 int ret;
491 char uuid[37];
492 memset(uuid, 0, sizeof(uuid));
493
494 if (argc < 3 || argc > 4)
495 return CMD_RET_USAGE;
496
497 if (fs_set_blk_dev(argv[1], argv[2], fstype))
498 return 1;
499
500 ret = fs_uuid(uuid);
501 if (ret)
502 return CMD_RET_FAILURE;
503
504 if (argc == 4)
505 setenv(argv[3], uuid);
506 else
507 printf("%s\n", uuid);
508
509 return CMD_RET_SUCCESS;
510}
1a1ad8e0
SS
511
512int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
513{
514 struct fstype_info *info;
515
516 if (argc < 3 || argc > 4)
517 return CMD_RET_USAGE;
518
519 if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
520 return 1;
521
522 info = fs_get_info(fs_type);
523
524 if (argc == 4)
525 setenv(argv[3], info->name);
526 else
527 printf("%s\n", info->name);
528
529 return CMD_RET_SUCCESS;
530}
531