fs/fs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
   4  */
   5
   6 #include <config.h>
   7 #include <errno.h>
   8 #include <common.h>
   9 #include <env.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 #include <efi_loader.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 static struct blk_desc *fs_dev_desc;
  26 static int fs_dev_part;
  27 static disk_partition_t fs_partition;
  28 static int fs_type = FS_TYPE_ANY;
  29
  30 static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
  31                                       disk_partition_t *fs_partition)
  32 {
  33         printf("** Unrecognized filesystem type **\n");
  34         return -1;
  35 }
  36
  37 static inline int fs_ls_unsupported(const char *dirname)
  38 {
  39         return -1;
  40 }
  41
  42 /* generic implementation of ls in terms of opendir/readdir/closedir */
  43 __maybe_unused
  44 static int fs_ls_generic(const char *dirname)
  45 {
  46         struct fs_dir_stream *dirs;
  47         struct fs_dirent *dent;
  48         int nfiles = 0, ndirs = 0;
  49
  50         dirs = fs_opendir(dirname);
  51         if (!dirs)
  52                 return -errno;
  53
  54         while ((dent = fs_readdir(dirs))) {
  55                 if (dent->type == FS_DT_DIR) {
  56                         printf("            %s/\n", dent->name);
  57                         ndirs++;
  58                 } else {
  59                         printf(" %8lld   %s\n", dent->size, dent->name);
  60                         nfiles++;
  61                 }
  62         }
  63
  64         fs_closedir(dirs);
  65
  66         printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);
  67
  68         return 0;
  69 }
  70
  71 static inline int fs_exists_unsupported(const char *filename)
  72 {
  73         return 0;
  74 }
  75
  76 static inline int fs_size_unsupported(const char *filename, loff_t *size)
  77 {
  78         return -1;
  79 }
  80
  81 static inline int fs_read_unsupported(const char *filename, void *buf,
  82                                       loff_t offset, loff_t len,
  83                                       loff_t *actread)
  84 {
  85         return -1;
  86 }
  87
  88 static inline int fs_write_unsupported(const char *filename, void *buf,
  89                                       loff_t offset, loff_t len,
  90                                       loff_t *actwrite)
  91 {
  92         return -1;
  93 }
  94
  95 static inline int fs_ln_unsupported(const char *filename, const char *target)
  96 {
  97         return -1;
  98 }
  99
 100 static inline void fs_close_unsupported(void)
 101 {
 102 }
 103
 104 static inline int fs_uuid_unsupported(char *uuid_str)
 105 {
 106         return -1;
 107 }
 108
 109 static inline int fs_opendir_unsupported(const char *filename,
 110                                          struct fs_dir_stream **dirs)
 111 {
 112         return -EACCES;
 113 }
 114
 115 static inline int fs_unlink_unsupported(const char *filename)
 116 {
 117         return -1;
 118 }
 119
 120 static inline int fs_mkdir_unsupported(const char *dirname)
 121 {
 122         return -1;
 123 }
 124
 125 struct fstype_info {
 126         int fstype;
 127         char *name;
 128         /*
 129          * Is it legal to pass NULL as .probe()'s  fs_dev_desc parameter? This
 130          * should be false in most cases. For "virtual" filesystems which
 131          * aren't based on a U-Boot block device (e.g. sandbox), this can be
 132          * set to true. This should also be true for the dummy entry at the end
 133          * of fstypes[], since that is essentially a "virtual" (non-existent)
 134          * filesystem.
 135          */
 136         bool null_dev_desc_ok;
 137         int (*probe)(struct blk_desc *fs_dev_desc,
 138                      disk_partition_t *fs_partition);
 139         int (*ls)(const char *dirname);
 140         int (*exists)(const char *filename);
 141         int (*size)(const char *filename, loff_t *size);
 142         int (*read)(const char *filename, void *buf, loff_t offset,
 143                     loff_t len, loff_t *actread);
 144         int (*write)(const char *filename, void *buf, loff_t offset,
 145                      loff_t len, loff_t *actwrite);
 146         void (*close)(void);
 147         int (*uuid)(char *uuid_str);
 148         /*
 149          * Open a directory stream.  On success return 0 and directory
 150          * stream pointer via 'dirsp'.  On error, return -errno.  See
 151          * fs_opendir().
 152          */
 153         int (*opendir)(const char *filename, struct fs_dir_stream **dirsp);
 154         /*
 155          * Read next entry from directory stream.  On success return 0
 156          * and directory entry pointer via 'dentp'.  On error return
 157          * -errno.  See fs_readdir().
 158          */
 159         int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
 160         /* see fs_closedir() */
 161         void (*closedir)(struct fs_dir_stream *dirs);
 162         int (*unlink)(const char *filename);
 163         int (*mkdir)(const char *dirname);
 164         int (*ln)(const char *filename, const char *target);
 165 };
 166
 167 static struct fstype_info fstypes[] = {
 168 #ifdef CONFIG_FS_FAT
 169         {
 170                 .fstype = FS_TYPE_FAT,
 171                 .name = "fat",
 172                 .null_dev_desc_ok = false,
 173                 .probe = fat_set_blk_dev,
 174                 .close = fat_close,
 175                 .ls = fs_ls_generic,
 176                 .exists = fat_exists,
 177                 .size = fat_size,
 178                 .read = fat_read_file,
 179 #if CONFIG_IS_ENABLED(FAT_WRITE)
 180                 .write = file_fat_write,
 181                 .unlink = fat_unlink,
 182                 .mkdir = fat_mkdir,
 183 #else
 184                 .write = fs_write_unsupported,
 185                 .unlink = fs_unlink_unsupported,
 186                 .mkdir = fs_mkdir_unsupported,
 187 #endif
 188                 .uuid = fs_uuid_unsupported,
 189                 .opendir = fat_opendir,
 190                 .readdir = fat_readdir,
 191                 .closedir = fat_closedir,
 192                 .ln = fs_ln_unsupported,
 193         },
 194 #endif
 195
 196 #if CONFIG_IS_ENABLED(FS_EXT4)
 197         {
 198                 .fstype = FS_TYPE_EXT,
 199                 .name = "ext4",
 200                 .null_dev_desc_ok = false,
 201                 .probe = ext4fs_probe,
 202                 .close = ext4fs_close,
 203                 .ls = ext4fs_ls,
 204                 .exists = ext4fs_exists,
 205                 .size = ext4fs_size,
 206                 .read = ext4_read_file,
 207 #ifdef CONFIG_CMD_EXT4_WRITE
 208                 .write = ext4_write_file,
 209                 .ln = ext4fs_create_link,
 210 #else
 211                 .write = fs_write_unsupported,
 212                 .ln = fs_ln_unsupported,
 213 #endif
 214                 .uuid = ext4fs_uuid,
 215                 .opendir = fs_opendir_unsupported,
 216                 .unlink = fs_unlink_unsupported,
 217                 .mkdir = fs_mkdir_unsupported,
 218         },
 219 #endif
 220 #ifdef CONFIG_SANDBOX
 221         {
 222                 .fstype = FS_TYPE_SANDBOX,
 223                 .name = "sandbox",
 224                 .null_dev_desc_ok = true,
 225                 .probe = sandbox_fs_set_blk_dev,
 226                 .close = sandbox_fs_close,
 227                 .ls = sandbox_fs_ls,
 228                 .exists = sandbox_fs_exists,
 229                 .size = sandbox_fs_size,
 230                 .read = fs_read_sandbox,
 231                 .write = fs_write_sandbox,
 232                 .uuid = fs_uuid_unsupported,
 233                 .opendir = fs_opendir_unsupported,
 234                 .unlink = fs_unlink_unsupported,
 235                 .mkdir = fs_mkdir_unsupported,
 236                 .ln = fs_ln_unsupported,
 237         },
 238 #endif
 239 #ifdef CONFIG_CMD_UBIFS
 240         {
 241                 .fstype = FS_TYPE_UBIFS,
 242                 .name = "ubifs",
 243                 .null_dev_desc_ok = true,
 244                 .probe = ubifs_set_blk_dev,
 245                 .close = ubifs_close,
 246                 .ls = ubifs_ls,
 247                 .exists = ubifs_exists,
 248                 .size = ubifs_size,
 249                 .read = ubifs_read,
 250                 .write = fs_write_unsupported,
 251                 .uuid = fs_uuid_unsupported,
 252                 .opendir = fs_opendir_unsupported,
 253                 .unlink = fs_unlink_unsupported,
 254                 .mkdir = fs_mkdir_unsupported,
 255                 .ln = fs_ln_unsupported,
 256         },
 257 #endif
 258 #ifdef CONFIG_FS_BTRFS
 259         {
 260                 .fstype = FS_TYPE_BTRFS,
 261                 .name = "btrfs",
 262                 .null_dev_desc_ok = false,
 263                 .probe = btrfs_probe,
 264                 .close = btrfs_close,
 265                 .ls = btrfs_ls,
 266                 .exists = btrfs_exists,
 267                 .size = btrfs_size,
 268                 .read = btrfs_read,
 269                 .write = fs_write_unsupported,
 270                 .uuid = btrfs_uuid,
 271                 .opendir = fs_opendir_unsupported,
 272                 .unlink = fs_unlink_unsupported,
 273                 .mkdir = fs_mkdir_unsupported,
 274                 .ln = fs_ln_unsupported,
 275         },
 276 #endif
 277         {
 278                 .fstype = FS_TYPE_ANY,
 279                 .name = "unsupported",
 280                 .null_dev_desc_ok = true,
 281                 .probe = fs_probe_unsupported,
 282                 .close = fs_close_unsupported,
 283                 .ls = fs_ls_unsupported,
 284                 .exists = fs_exists_unsupported,
 285                 .size = fs_size_unsupported,
 286                 .read = fs_read_unsupported,
 287                 .write = fs_write_unsupported,
 288                 .uuid = fs_uuid_unsupported,
 289                 .opendir = fs_opendir_unsupported,
 290                 .unlink = fs_unlink_unsupported,
 291                 .mkdir = fs_mkdir_unsupported,
 292                 .ln = fs_ln_unsupported,
 293         },
 294 };
 295
 296 static struct fstype_info *fs_get_info(int fstype)
 297 {
 298         struct fstype_info *info;
 299         int i;
 300
 301         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
 302                 if (fstype == info->fstype)
 303                         return info;
 304         }
 305
 306         /* Return the 'unsupported' sentinel */
 307         return info;
 308 }
 309
 310 /**
 311  * fs_get_type_name() - Get type of current filesystem
 312  *
 313  * Return: Pointer to filesystem name
 314  *
 315  * Returns a string describing the current filesystem, or the sentinel
 316  * "unsupported" for any unrecognised filesystem.
 317  */
 318 const char *fs_get_type_name(void)
 319 {
 320         return fs_get_info(fs_type)->name;
 321 }
 322
 323 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
 324 {
 325         struct fstype_info *info;
 326         int part, i;
 327 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 328         static int relocated;
 329
 330         if (!relocated) {
 331                 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
 332                                 i++, info++) {
 333                         info->name += gd->reloc_off;
 334                         info->probe += gd->reloc_off;
 335                         info->close += gd->reloc_off;
 336                         info->ls += gd->reloc_off;
 337                         info->read += gd->reloc_off;
 338                         info->write += gd->reloc_off;
 339                 }
 340                 relocated = 1;
 341         }
 342 #endif
 343
 344         part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc,
 345                                         &fs_partition, 1);
 346         if (part < 0)
 347                 return -1;
 348
 349         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
 350                 if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
 351                                 fstype != info->fstype)
 352                         continue;
 353
 354                 if (!fs_dev_desc && !info->null_dev_desc_ok)
 355                         continue;
 356
 357                 if (!info->probe(fs_dev_desc, &fs_partition)) {
 358                         fs_type = info->fstype;
 359                         fs_dev_part = part;
 360                         return 0;
 361                 }
 362         }
 363
 364         return -1;
 365 }
 366
 367 /* set current blk device w/ blk_desc + partition # */
 368 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part)
 369 {
 370         struct fstype_info *info;
 371         int ret, i;
 372
 373         if (part >= 1)
 374                 ret = part_get_info(desc, part, &fs_partition);
 375         else
 376                 ret = part_get_info_whole_disk(desc, &fs_partition);
 377         if (ret)
 378                 return ret;
 379         fs_dev_desc = desc;
 380
 381         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
 382                 if (!info->probe(fs_dev_desc, &fs_partition)) {
 383                         fs_type = info->fstype;
 384                         fs_dev_part = part;
 385                         return 0;
 386                 }
 387         }
 388
 389         return -1;
 390 }
 391
 392 void fs_close(void)
 393 {
 394         struct fstype_info *info = fs_get_info(fs_type);
 395
 396         info->close();
 397
 398         fs_type = FS_TYPE_ANY;
 399 }
 400
 401 int fs_uuid(char *uuid_str)
 402 {
 403         struct fstype_info *info = fs_get_info(fs_type);
 404
 405         return info->uuid(uuid_str);
 406 }
 407
 408 int fs_ls(const char *dirname)
 409 {
 410         int ret;
 411
 412         struct fstype_info *info = fs_get_info(fs_type);
 413
 414         ret = info->ls(dirname);
 415
 416         fs_type = FS_TYPE_ANY;
 417         fs_close();
 418
 419         return ret;
 420 }
 421
 422 int fs_exists(const char *filename)
 423 {
 424         int ret;
 425
 426         struct fstype_info *info = fs_get_info(fs_type);
 427
 428         ret = info->exists(filename);
 429
 430         fs_close();
 431
 432         return ret;
 433 }
 434
 435 int fs_size(const char *filename, loff_t *size)
 436 {
 437         int ret;
 438
 439         struct fstype_info *info = fs_get_info(fs_type);
 440
 441         ret = info->size(filename, size);
 442
 443         fs_close();
 444
 445         return ret;
 446 }
 447
 448 #ifdef CONFIG_LMB
 449 /* Check if a file may be read to the given address */
 450 static int fs_read_lmb_check(const char *filename, ulong addr, loff_t offset,
 451                              loff_t len, struct fstype_info *info)
 452 {
 453         struct lmb lmb;
 454         int ret;
 455         loff_t size;
 456         loff_t read_len;
 457
 458         /* get the actual size of the file */
 459         ret = info->size(filename, &size);
 460         if (ret)
 461                 return ret;
 462         if (offset >= size) {
 463                 /* offset >= EOF, no bytes will be written */
 464                 return 0;
 465         }
 466         read_len = size - offset;
 467
 468         /* limit to 'len' if it is smaller */
 469         if (len && len < read_len)
 470                 read_len = len;
 471
 472         lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
 473         lmb_dump_all(&lmb);
 474
 475         if (lmb_alloc_addr(&lmb, addr, read_len) == addr)
 476                 return 0;
 477
 478         printf("** Reading file would overwrite reserved memory **\n");
 479         return -ENOSPC;
 480 }
 481 #endif
 482
 483 static int _fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
 484                     int do_lmb_check, loff_t *actread)
 485 {
 486         struct fstype_info *info = fs_get_info(fs_type);
 487         void *buf;
 488         int ret;
 489
 490 #ifdef CONFIG_LMB
 491         if (do_lmb_check) {
 492                 ret = fs_read_lmb_check(filename, addr, offset, len, info);
 493                 if (ret)
 494                         return ret;
 495         }
 496 #endif
 497
 498         /*
 499          * We don't actually know how many bytes are being read, since len==0
 500          * means read the whole file.
 501          */
 502         buf = map_sysmem(addr, len);
 503         ret = info->read(filename, buf, offset, len, actread);
 504         unmap_sysmem(buf);
 505
 506         /* If we requested a specific number of bytes, check we got it */
 507         if (ret == 0 && len && *actread != len)
 508                 debug("** %s shorter than offset + len **\n", filename);
 509         fs_close();
 510
 511         return ret;
 512 }
 513
 514 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
 515             loff_t *actread)
 516 {
 517         return _fs_read(filename, addr, offset, len, 0, actread);
 518 }
 519
 520 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
 521              loff_t *actwrite)
 522 {
 523         struct fstype_info *info = fs_get_info(fs_type);
 524         void *buf;
 525         int ret;
 526
 527         buf = map_sysmem(addr, len);
 528         ret = info->write(filename, buf, offset, len, actwrite);
 529         unmap_sysmem(buf);
 530
 531         if (ret < 0 && len != *actwrite) {
 532                 printf("** Unable to write file %s **\n", filename);
 533                 ret = -1;
 534         }
 535         fs_close();
 536
 537         return ret;
 538 }
 539
 540 struct fs_dir_stream *fs_opendir(const char *filename)
 541 {
 542         struct fstype_info *info = fs_get_info(fs_type);
 543         struct fs_dir_stream *dirs = NULL;
 544         int ret;
 545
 546         ret = info->opendir(filename, &dirs);
 547         fs_close();
 548         if (ret) {
 549                 errno = -ret;
 550                 return NULL;
 551         }
 552
 553         dirs->desc = fs_dev_desc;
 554         dirs->part = fs_dev_part;
 555
 556         return dirs;
 557 }
 558
 559 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs)
 560 {
 561         struct fstype_info *info;
 562         struct fs_dirent *dirent;
 563         int ret;
 564
 565         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
 566         info = fs_get_info(fs_type);
 567
 568         ret = info->readdir(dirs, &dirent);
 569         fs_close();
 570         if (ret) {
 571                 errno = -ret;
 572                 return NULL;
 573         }
 574
 575         return dirent;
 576 }
 577
 578 void fs_closedir(struct fs_dir_stream *dirs)
 579 {
 580         struct fstype_info *info;
 581
 582         if (!dirs)
 583                 return;
 584
 585         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
 586         info = fs_get_info(fs_type);
 587
 588         info->closedir(dirs);
 589         fs_close();
 590 }
 591
 592 int fs_unlink(const char *filename)
 593 {
 594         int ret;
 595
 596         struct fstype_info *info = fs_get_info(fs_type);
 597
 598         ret = info->unlink(filename);
 599
 600         fs_type = FS_TYPE_ANY;
 601         fs_close();
 602
 603         return ret;
 604 }
 605
 606 int fs_mkdir(const char *dirname)
 607 {
 608         int ret;
 609
 610         struct fstype_info *info = fs_get_info(fs_type);
 611
 612         ret = info->mkdir(dirname);
 613
 614         fs_type = FS_TYPE_ANY;
 615         fs_close();
 616
 617         return ret;
 618 }
 619
 620 int fs_ln(const char *fname, const char *target)
 621 {
 622         struct fstype_info *info = fs_get_info(fs_type);
 623         int ret;
 624
 625         ret = info->ln(fname, target);
 626
 627         if (ret < 0) {
 628                 printf("** Unable to create link %s -> %s **\n", fname, target);
 629                 ret = -1;
 630         }
 631         fs_close();
 632
 633         return ret;
 634 }
 635
 636 int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 637                 int fstype)
 638 {
 639         loff_t size;
 640
 641         if (argc != 4)
 642                 return CMD_RET_USAGE;
 643
 644         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 645                 return 1;
 646
 647         if (fs_size(argv[3], &size) < 0)
 648                 return CMD_RET_FAILURE;
 649
 650         env_set_hex("filesize", size);
 651
 652         return 0;
 653 }
 654
 655 int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 656                 int fstype)
 657 {
 658         unsigned long addr;
 659         const char *addr_str;
 660         const char *filename;
 661         loff_t bytes;
 662         loff_t pos;
 663         loff_t len_read;
 664         int ret;
 665         unsigned long time;
 666         char *ep;
 667
 668         if (argc < 2)
 669                 return CMD_RET_USAGE;
 670         if (argc > 7)
 671                 return CMD_RET_USAGE;
 672
 673         if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
 674                 return 1;
 675
 676         if (argc >= 4) {
 677                 addr = simple_strtoul(argv[3], &ep, 16);
 678                 if (ep == argv[3] || *ep != '\0')
 679                         return CMD_RET_USAGE;
 680         } else {
 681                 addr_str = env_get("loadaddr");
 682                 if (addr_str != NULL)
 683                         addr = simple_strtoul(addr_str, NULL, 16);
 684                 else
 685                         addr = CONFIG_SYS_LOAD_ADDR;
 686         }
 687         if (argc >= 5) {
 688                 filename = argv[4];
 689         } else {
 690                 filename = env_get("bootfile");
 691                 if (!filename) {
 692                         puts("** No boot file defined **\n");
 693                         return 1;
 694                 }
 695         }
 696         if (argc >= 6)
 697                 bytes = simple_strtoul(argv[5], NULL, 16);
 698         else
 699                 bytes = 0;
 700         if (argc >= 7)
 701                 pos = simple_strtoul(argv[6], NULL, 16);
 702         else
 703                 pos = 0;
 704
 705 #ifdef CONFIG_CMD_BOOTEFI
 706         efi_set_bootdev(argv[1], (argc > 2) ? argv[2] : "",
 707                         (argc > 4) ? argv[4] : "");
 708 #endif
 709         time = get_timer(0);
 710         ret = _fs_read(filename, addr, pos, bytes, 1, &len_read);
 711         time = get_timer(time);
 712         if (ret < 0)
 713                 return 1;
 714
 715         printf("%llu bytes read in %lu ms", len_read, time);
 716         if (time > 0) {
 717                 puts(" (");
 718                 print_size(div_u64(len_read, time) * 1000, "/s");
 719                 puts(")");
 720         }
 721         puts("\n");
 722
 723         env_set_hex("fileaddr", addr);
 724         env_set_hex("filesize", len_read);
 725
 726         return 0;
 727 }
 728
 729 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 730         int fstype)
 731 {
 732         if (argc < 2)
 733                 return CMD_RET_USAGE;
 734         if (argc > 4)
 735                 return CMD_RET_USAGE;
 736
 737         if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
 738                 return 1;
 739
 740         if (fs_ls(argc >= 4 ? argv[3] : "/"))
 741                 return 1;
 742
 743         return 0;
 744 }
 745
 746 int file_exists(const char *dev_type, const char *dev_part, const char *file,
 747                 int fstype)
 748 {
 749         if (fs_set_blk_dev(dev_type, dev_part, fstype))
 750                 return 0;
 751
 752         return fs_exists(file);
 753 }
 754
 755 int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 756                 int fstype)
 757 {
 758         unsigned long addr;
 759         const char *filename;
 760         loff_t bytes;
 761         loff_t pos;
 762         loff_t len;
 763         int ret;
 764         unsigned long time;
 765
 766         if (argc < 6 || argc > 7)
 767                 return CMD_RET_USAGE;
 768
 769         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 770                 return 1;
 771
 772         addr = simple_strtoul(argv[3], NULL, 16);
 773         filename = argv[4];
 774         bytes = simple_strtoul(argv[5], NULL, 16);
 775         if (argc >= 7)
 776                 pos = simple_strtoul(argv[6], NULL, 16);
 777         else
 778                 pos = 0;
 779
 780         time = get_timer(0);
 781         ret = fs_write(filename, addr, pos, bytes, &len);
 782         time = get_timer(time);
 783         if (ret < 0)
 784                 return 1;
 785
 786         printf("%llu bytes written in %lu ms", len, time);
 787         if (time > 0) {
 788                 puts(" (");
 789                 print_size(div_u64(len, time) * 1000, "/s");
 790                 puts(")");
 791         }
 792         puts("\n");
 793
 794         return 0;
 795 }
 796
 797 int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 798                 int fstype)
 799 {
 800         int ret;
 801         char uuid[37];
 802         memset(uuid, 0, sizeof(uuid));
 803
 804         if (argc < 3 || argc > 4)
 805                 return CMD_RET_USAGE;
 806
 807         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 808                 return 1;
 809
 810         ret = fs_uuid(uuid);
 811         if (ret)
 812                 return CMD_RET_FAILURE;
 813
 814         if (argc == 4)
 815                 env_set(argv[3], uuid);
 816         else
 817                 printf("%s\n", uuid);
 818
 819         return CMD_RET_SUCCESS;
 820 }
 821
 822 int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 823 {
 824         struct fstype_info *info;
 825
 826         if (argc < 3 || argc > 4)
 827                 return CMD_RET_USAGE;
 828
 829         if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
 830                 return 1;
 831
 832         info = fs_get_info(fs_type);
 833
 834         if (argc == 4)
 835                 env_set(argv[3], info->name);
 836         else
 837                 printf("%s\n", info->name);
 838
 839         fs_close();
 840
 841         return CMD_RET_SUCCESS;
 842 }
 843
 844 int do_rm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 845           int fstype)
 846 {
 847         if (argc != 4)
 848                 return CMD_RET_USAGE;
 849
 850         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 851                 return 1;
 852
 853         if (fs_unlink(argv[3]))
 854                 return 1;
 855
 856         return 0;
 857 }
 858
 859 int do_mkdir(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 860              int fstype)
 861 {
 862         int ret;
 863
 864         if (argc != 4)
 865                 return CMD_RET_USAGE;
 866
 867         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 868                 return 1;
 869
 870         ret = fs_mkdir(argv[3]);
 871         if (ret) {
 872                 printf("** Unable to create a directory \"%s\" **\n", argv[3]);
 873                 return 1;
 874         }
 875
 876         return 0;
 877 }
 878
 879 int do_ln(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 880           int fstype)
 881 {
 882         if (argc != 5)
 883                 return CMD_RET_USAGE;
 884
 885         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 886                 return 1;
 887
 888         if (fs_ln(argv[3], argv[4]))
 889                 return 1;
 890
 891         return 0;
 892 }