fs/fs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
   4  */
   5
   6 #define LOG_CATEGORY LOGC_CORE
   7
   8 #include <command.h>
   9 #include <config.h>
  10 #include <errno.h>
  11 #include <common.h>
  12 #include <env.h>
  13 #include <lmb.h>
  14 #include <log.h>
  15 #include <mapmem.h>
  16 #include <part.h>
  17 #include <ext4fs.h>
  18 #include <fat.h>
  19 #include <fs.h>
  20 #include <sandboxfs.h>
  21 #include <ubifs_uboot.h>
  22 #include <btrfs.h>
  23 #include <asm/io.h>
  24 #include <div64.h>
  25 #include <linux/math64.h>
  26 #include <efi_loader.h>
  27 #include <squashfs.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 static struct blk_desc *fs_dev_desc;
  32 static int fs_dev_part;
  33 static struct disk_partition fs_partition;
  34 static int fs_type = FS_TYPE_ANY;
  35
  36 static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
  37                                       struct disk_partition *fs_partition)
  38 {
  39         log_err("** Unrecognized filesystem type **\n");
  40         return -1;
  41 }
  42
  43 static inline int fs_ls_unsupported(const char *dirname)
  44 {
  45         return -1;
  46 }
  47
  48 /* generic implementation of ls in terms of opendir/readdir/closedir */
  49 __maybe_unused
  50 static int fs_ls_generic(const char *dirname)
  51 {
  52         struct fs_dir_stream *dirs;
  53         struct fs_dirent *dent;
  54         int nfiles = 0, ndirs = 0;
  55
  56         dirs = fs_opendir(dirname);
  57         if (!dirs)
  58                 return -errno;
  59
  60         while ((dent = fs_readdir(dirs))) {
  61                 if (dent->type == FS_DT_DIR) {
  62                         printf("            %s/\n", dent->name);
  63                         ndirs++;
  64                 } else if (dent->type == FS_DT_LNK) {
  65                         printf("    <SYM>   %s\n", dent->name);
  66                         nfiles++;
  67                 } else {
  68                         printf(" %8lld   %s\n", dent->size, dent->name);
  69                         nfiles++;
  70                 }
  71         }
  72
  73         fs_closedir(dirs);
  74
  75         printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);
  76
  77         return 0;
  78 }
  79
  80 static inline int fs_exists_unsupported(const char *filename)
  81 {
  82         return 0;
  83 }
  84
  85 static inline int fs_size_unsupported(const char *filename, loff_t *size)
  86 {
  87         return -1;
  88 }
  89
  90 static inline int fs_read_unsupported(const char *filename, void *buf,
  91                                       loff_t offset, loff_t len,
  92                                       loff_t *actread)
  93 {
  94         return -1;
  95 }
  96
  97 static inline int fs_write_unsupported(const char *filename, void *buf,
  98                                       loff_t offset, loff_t len,
  99                                       loff_t *actwrite)
 100 {
 101         return -1;
 102 }
 103
 104 static inline int fs_ln_unsupported(const char *filename, const char *target)
 105 {
 106         return -1;
 107 }
 108
 109 static inline void fs_close_unsupported(void)
 110 {
 111 }
 112
 113 static inline int fs_uuid_unsupported(char *uuid_str)
 114 {
 115         return -1;
 116 }
 117
 118 static inline int fs_opendir_unsupported(const char *filename,
 119                                          struct fs_dir_stream **dirs)
 120 {
 121         return -EACCES;
 122 }
 123
 124 static inline int fs_unlink_unsupported(const char *filename)
 125 {
 126         return -1;
 127 }
 128
 129 static inline int fs_mkdir_unsupported(const char *dirname)
 130 {
 131         return -1;
 132 }
 133
 134 struct fstype_info {
 135         int fstype;
 136         char *name;
 137         /*
 138          * Is it legal to pass NULL as .probe()'s  fs_dev_desc parameter? This
 139          * should be false in most cases. For "virtual" filesystems which
 140          * aren't based on a U-Boot block device (e.g. sandbox), this can be
 141          * set to true. This should also be true for the dummy entry at the end
 142          * of fstypes[], since that is essentially a "virtual" (non-existent)
 143          * filesystem.
 144          */
 145         bool null_dev_desc_ok;
 146         int (*probe)(struct blk_desc *fs_dev_desc,
 147                      struct disk_partition *fs_partition);
 148         int (*ls)(const char *dirname);
 149         int (*exists)(const char *filename);
 150         int (*size)(const char *filename, loff_t *size);
 151         int (*read)(const char *filename, void *buf, loff_t offset,
 152                     loff_t len, loff_t *actread);
 153         int (*write)(const char *filename, void *buf, loff_t offset,
 154                      loff_t len, loff_t *actwrite);
 155         void (*close)(void);
 156         int (*uuid)(char *uuid_str);
 157         /*
 158          * Open a directory stream.  On success return 0 and directory
 159          * stream pointer via 'dirsp'.  On error, return -errno.  See
 160          * fs_opendir().
 161          */
 162         int (*opendir)(const char *filename, struct fs_dir_stream **dirsp);
 163         /*
 164          * Read next entry from directory stream.  On success return 0
 165          * and directory entry pointer via 'dentp'.  On error return
 166          * -errno.  See fs_readdir().
 167          */
 168         int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
 169         /* see fs_closedir() */
 170         void (*closedir)(struct fs_dir_stream *dirs);
 171         int (*unlink)(const char *filename);
 172         int (*mkdir)(const char *dirname);
 173         int (*ln)(const char *filename, const char *target);
 174 };
 175
 176 static struct fstype_info fstypes[] = {
 177 #ifdef CONFIG_FS_FAT
 178         {
 179                 .fstype = FS_TYPE_FAT,
 180                 .name = "fat",
 181                 .null_dev_desc_ok = false,
 182                 .probe = fat_set_blk_dev,
 183                 .close = fat_close,
 184                 .ls = fs_ls_generic,
 185                 .exists = fat_exists,
 186                 .size = fat_size,
 187                 .read = fat_read_file,
 188 #if CONFIG_IS_ENABLED(FAT_WRITE)
 189                 .write = file_fat_write,
 190                 .unlink = fat_unlink,
 191                 .mkdir = fat_mkdir,
 192 #else
 193                 .write = fs_write_unsupported,
 194                 .unlink = fs_unlink_unsupported,
 195                 .mkdir = fs_mkdir_unsupported,
 196 #endif
 197                 .uuid = fs_uuid_unsupported,
 198                 .opendir = fat_opendir,
 199                 .readdir = fat_readdir,
 200                 .closedir = fat_closedir,
 201                 .ln = fs_ln_unsupported,
 202         },
 203 #endif
 204
 205 #if CONFIG_IS_ENABLED(FS_EXT4)
 206         {
 207                 .fstype = FS_TYPE_EXT,
 208                 .name = "ext4",
 209                 .null_dev_desc_ok = false,
 210                 .probe = ext4fs_probe,
 211                 .close = ext4fs_close,
 212                 .ls = ext4fs_ls,
 213                 .exists = ext4fs_exists,
 214                 .size = ext4fs_size,
 215                 .read = ext4_read_file,
 216 #ifdef CONFIG_CMD_EXT4_WRITE
 217                 .write = ext4_write_file,
 218                 .ln = ext4fs_create_link,
 219 #else
 220                 .write = fs_write_unsupported,
 221                 .ln = fs_ln_unsupported,
 222 #endif
 223                 .uuid = ext4fs_uuid,
 224                 .opendir = fs_opendir_unsupported,
 225                 .unlink = fs_unlink_unsupported,
 226                 .mkdir = fs_mkdir_unsupported,
 227         },
 228 #endif
 229 #ifdef CONFIG_SANDBOX
 230         {
 231                 .fstype = FS_TYPE_SANDBOX,
 232                 .name = "sandbox",
 233                 .null_dev_desc_ok = true,
 234                 .probe = sandbox_fs_set_blk_dev,
 235                 .close = sandbox_fs_close,
 236                 .ls = sandbox_fs_ls,
 237                 .exists = sandbox_fs_exists,
 238                 .size = sandbox_fs_size,
 239                 .read = fs_read_sandbox,
 240                 .write = fs_write_sandbox,
 241                 .uuid = fs_uuid_unsupported,
 242                 .opendir = fs_opendir_unsupported,
 243                 .unlink = fs_unlink_unsupported,
 244                 .mkdir = fs_mkdir_unsupported,
 245                 .ln = fs_ln_unsupported,
 246         },
 247 #endif
 248 #ifdef CONFIG_CMD_UBIFS
 249         {
 250                 .fstype = FS_TYPE_UBIFS,
 251                 .name = "ubifs",
 252                 .null_dev_desc_ok = true,
 253                 .probe = ubifs_set_blk_dev,
 254                 .close = ubifs_close,
 255                 .ls = ubifs_ls,
 256                 .exists = ubifs_exists,
 257                 .size = ubifs_size,
 258                 .read = ubifs_read,
 259                 .write = fs_write_unsupported,
 260                 .uuid = fs_uuid_unsupported,
 261                 .opendir = fs_opendir_unsupported,
 262                 .unlink = fs_unlink_unsupported,
 263                 .mkdir = fs_mkdir_unsupported,
 264                 .ln = fs_ln_unsupported,
 265         },
 266 #endif
 267 #ifdef CONFIG_FS_BTRFS
 268         {
 269                 .fstype = FS_TYPE_BTRFS,
 270                 .name = "btrfs",
 271                 .null_dev_desc_ok = false,
 272                 .probe = btrfs_probe,
 273                 .close = btrfs_close,
 274                 .ls = btrfs_ls,
 275                 .exists = btrfs_exists,
 276                 .size = btrfs_size,
 277                 .read = btrfs_read,
 278                 .write = fs_write_unsupported,
 279                 .uuid = btrfs_uuid,
 280                 .opendir = fs_opendir_unsupported,
 281                 .unlink = fs_unlink_unsupported,
 282                 .mkdir = fs_mkdir_unsupported,
 283                 .ln = fs_ln_unsupported,
 284         },
 285 #endif
 286 #if IS_ENABLED(CONFIG_FS_SQUASHFS)
 287         {
 288                 .fstype = FS_TYPE_SQUASHFS,
 289                 .name = "squashfs",
 290                 .probe = sqfs_probe,
 291                 .opendir = sqfs_opendir,
 292                 .readdir = sqfs_readdir,
 293                 .ls = fs_ls_generic,
 294                 .read = sqfs_read,
 295                 .size = sqfs_size,
 296                 .close = sqfs_close,
 297                 .closedir = sqfs_closedir,
 298         },
 299 #endif
 300         {
 301                 .fstype = FS_TYPE_ANY,
 302                 .name = "unsupported",
 303                 .null_dev_desc_ok = true,
 304                 .probe = fs_probe_unsupported,
 305                 .close = fs_close_unsupported,
 306                 .ls = fs_ls_unsupported,
 307                 .exists = fs_exists_unsupported,
 308                 .size = fs_size_unsupported,
 309                 .read = fs_read_unsupported,
 310                 .write = fs_write_unsupported,
 311                 .uuid = fs_uuid_unsupported,
 312                 .opendir = fs_opendir_unsupported,
 313                 .unlink = fs_unlink_unsupported,
 314                 .mkdir = fs_mkdir_unsupported,
 315                 .ln = fs_ln_unsupported,
 316         },
 317 };
 318
 319 static struct fstype_info *fs_get_info(int fstype)
 320 {
 321         struct fstype_info *info;
 322         int i;
 323
 324         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
 325                 if (fstype == info->fstype)
 326                         return info;
 327         }
 328
 329         /* Return the 'unsupported' sentinel */
 330         return info;
 331 }
 332
 333 /**
 334  * fs_get_type() - Get type of current filesystem
 335  *
 336  * Return: filesystem type
 337  *
 338  * Returns filesystem type representing the current filesystem, or
 339  * FS_TYPE_ANY for any unrecognised filesystem.
 340  */
 341 int fs_get_type(void)
 342 {
 343         return fs_type;
 344 }
 345
 346 /**
 347  * fs_get_type_name() - Get type of current filesystem
 348  *
 349  * Return: Pointer to filesystem name
 350  *
 351  * Returns a string describing the current filesystem, or the sentinel
 352  * "unsupported" for any unrecognised filesystem.
 353  */
 354 const char *fs_get_type_name(void)
 355 {
 356         return fs_get_info(fs_type)->name;
 357 }
 358
 359 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
 360 {
 361         struct fstype_info *info;
 362         int part, i;
 363 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 364         static int relocated;
 365
 366         if (!relocated) {
 367                 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
 368                                 i++, info++) {
 369                         info->name += gd->reloc_off;
 370                         info->probe += gd->reloc_off;
 371                         info->close += gd->reloc_off;
 372                         info->ls += gd->reloc_off;
 373                         info->read += gd->reloc_off;
 374                         info->write += gd->reloc_off;
 375                 }
 376                 relocated = 1;
 377         }
 378 #endif
 379
 380         part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc,
 381                                         &fs_partition, 1);
 382         if (part < 0)
 383                 return -1;
 384
 385         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
 386                 if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
 387                                 fstype != info->fstype)
 388                         continue;
 389
 390                 if (!fs_dev_desc && !info->null_dev_desc_ok)
 391                         continue;
 392
 393                 if (!info->probe(fs_dev_desc, &fs_partition)) {
 394                         fs_type = info->fstype;
 395                         fs_dev_part = part;
 396                         return 0;
 397                 }
 398         }
 399
 400         return -1;
 401 }
 402
 403 /* set current blk device w/ blk_desc + partition # */
 404 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part)
 405 {
 406         struct fstype_info *info;
 407         int ret, i;
 408
 409         if (part >= 1)
 410                 ret = part_get_info(desc, part, &fs_partition);
 411         else
 412                 ret = part_get_info_whole_disk(desc, &fs_partition);
 413         if (ret)
 414                 return ret;
 415         fs_dev_desc = desc;
 416
 417         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
 418                 if (!info->probe(fs_dev_desc, &fs_partition)) {
 419                         fs_type = info->fstype;
 420                         fs_dev_part = part;
 421                         return 0;
 422                 }
 423         }
 424
 425         return -1;
 426 }
 427
 428 void fs_close(void)
 429 {
 430         struct fstype_info *info = fs_get_info(fs_type);
 431
 432         info->close();
 433
 434         fs_type = FS_TYPE_ANY;
 435 }
 436
 437 int fs_uuid(char *uuid_str)
 438 {
 439         struct fstype_info *info = fs_get_info(fs_type);
 440
 441         return info->uuid(uuid_str);
 442 }
 443
 444 int fs_ls(const char *dirname)
 445 {
 446         int ret;
 447
 448         struct fstype_info *info = fs_get_info(fs_type);
 449
 450         ret = info->ls(dirname);
 451
 452         fs_close();
 453
 454         return ret;
 455 }
 456
 457 int fs_exists(const char *filename)
 458 {
 459         int ret;
 460
 461         struct fstype_info *info = fs_get_info(fs_type);
 462
 463         ret = info->exists(filename);
 464
 465         fs_close();
 466
 467         return ret;
 468 }
 469
 470 int fs_size(const char *filename, loff_t *size)
 471 {
 472         int ret;
 473
 474         struct fstype_info *info = fs_get_info(fs_type);
 475
 476         ret = info->size(filename, size);
 477
 478         fs_close();
 479
 480         return ret;
 481 }
 482
 483 #ifdef CONFIG_LMB
 484 /* Check if a file may be read to the given address */
 485 static int fs_read_lmb_check(const char *filename, ulong addr, loff_t offset,
 486                              loff_t len, struct fstype_info *info)
 487 {
 488         struct lmb lmb;
 489         int ret;
 490         loff_t size;
 491         loff_t read_len;
 492
 493         /* get the actual size of the file */
 494         ret = info->size(filename, &size);
 495         if (ret)
 496                 return ret;
 497         if (offset >= size) {
 498                 /* offset >= EOF, no bytes will be written */
 499                 return 0;
 500         }
 501         read_len = size - offset;
 502
 503         /* limit to 'len' if it is smaller */
 504         if (len && len < read_len)
 505                 read_len = len;
 506
 507         lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
 508         lmb_dump_all(&lmb);
 509
 510         if (lmb_alloc_addr(&lmb, addr, read_len) == addr)
 511                 return 0;
 512
 513         log_err("** Reading file would overwrite reserved memory **\n");
 514         return -ENOSPC;
 515 }
 516 #endif
 517
 518 static int _fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
 519                     int do_lmb_check, loff_t *actread)
 520 {
 521         struct fstype_info *info = fs_get_info(fs_type);
 522         void *buf;
 523         int ret;
 524
 525 #ifdef CONFIG_LMB
 526         if (do_lmb_check) {
 527                 ret = fs_read_lmb_check(filename, addr, offset, len, info);
 528                 if (ret)
 529                         return ret;
 530         }
 531 #endif
 532
 533         /*
 534          * We don't actually know how many bytes are being read, since len==0
 535          * means read the whole file.
 536          */
 537         buf = map_sysmem(addr, len);
 538         ret = info->read(filename, buf, offset, len, actread);
 539         unmap_sysmem(buf);
 540
 541         /* If we requested a specific number of bytes, check we got it */
 542         if (ret == 0 && len && *actread != len)
 543                 log_debug("** %s shorter than offset + len **\n", filename);
 544         fs_close();
 545
 546         return ret;
 547 }
 548
 549 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
 550             loff_t *actread)
 551 {
 552         return _fs_read(filename, addr, offset, len, 0, actread);
 553 }
 554
 555 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
 556              loff_t *actwrite)
 557 {
 558         struct fstype_info *info = fs_get_info(fs_type);
 559         void *buf;
 560         int ret;
 561
 562         buf = map_sysmem(addr, len);
 563         ret = info->write(filename, buf, offset, len, actwrite);
 564         unmap_sysmem(buf);
 565
 566         if (ret < 0 && len != *actwrite) {
 567                 log_err("** Unable to write file %s **\n", filename);
 568                 ret = -1;
 569         }
 570         fs_close();
 571
 572         return ret;
 573 }
 574
 575 struct fs_dir_stream *fs_opendir(const char *filename)
 576 {
 577         struct fstype_info *info = fs_get_info(fs_type);
 578         struct fs_dir_stream *dirs = NULL;
 579         int ret;
 580
 581         ret = info->opendir(filename, &dirs);
 582         fs_close();
 583         if (ret) {
 584                 errno = -ret;
 585                 return NULL;
 586         }
 587
 588         dirs->desc = fs_dev_desc;
 589         dirs->part = fs_dev_part;
 590
 591         return dirs;
 592 }
 593
 594 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs)
 595 {
 596         struct fstype_info *info;
 597         struct fs_dirent *dirent;
 598         int ret;
 599
 600         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
 601         info = fs_get_info(fs_type);
 602
 603         ret = info->readdir(dirs, &dirent);
 604         fs_close();
 605         if (ret) {
 606                 errno = -ret;
 607                 return NULL;
 608         }
 609
 610         return dirent;
 611 }
 612
 613 void fs_closedir(struct fs_dir_stream *dirs)
 614 {
 615         struct fstype_info *info;
 616
 617         if (!dirs)
 618                 return;
 619
 620         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
 621         info = fs_get_info(fs_type);
 622
 623         info->closedir(dirs);
 624         fs_close();
 625 }
 626
 627 int fs_unlink(const char *filename)
 628 {
 629         int ret;
 630
 631         struct fstype_info *info = fs_get_info(fs_type);
 632
 633         ret = info->unlink(filename);
 634
 635         fs_close();
 636
 637         return ret;
 638 }
 639
 640 int fs_mkdir(const char *dirname)
 641 {
 642         int ret;
 643
 644         struct fstype_info *info = fs_get_info(fs_type);
 645
 646         ret = info->mkdir(dirname);
 647
 648         fs_close();
 649
 650         return ret;
 651 }
 652
 653 int fs_ln(const char *fname, const char *target)
 654 {
 655         struct fstype_info *info = fs_get_info(fs_type);
 656         int ret;
 657
 658         ret = info->ln(fname, target);
 659
 660         if (ret < 0) {
 661                 log_err("** Unable to create link %s -> %s **\n", fname, target);
 662                 ret = -1;
 663         }
 664         fs_close();
 665
 666         return ret;
 667 }
 668
 669 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 670             int fstype)
 671 {
 672         loff_t size;
 673
 674         if (argc != 4)
 675                 return CMD_RET_USAGE;
 676
 677         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 678                 return 1;
 679
 680         if (fs_size(argv[3], &size) < 0)
 681                 return CMD_RET_FAILURE;
 682
 683         env_set_hex("filesize", size);
 684
 685         return 0;
 686 }
 687
 688 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 689             int fstype)
 690 {
 691         unsigned long addr;
 692         const char *addr_str;
 693         const char *filename;
 694         loff_t bytes;
 695         loff_t pos;
 696         loff_t len_read;
 697         int ret;
 698         unsigned long time;
 699         char *ep;
 700
 701         if (argc < 2)
 702                 return CMD_RET_USAGE;
 703         if (argc > 7)
 704                 return CMD_RET_USAGE;
 705
 706         if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
 707                 return 1;
 708
 709         if (argc >= 4) {
 710                 addr = simple_strtoul(argv[3], &ep, 16);
 711                 if (ep == argv[3] || *ep != '\0')
 712                         return CMD_RET_USAGE;
 713         } else {
 714                 addr_str = env_get("loadaddr");
 715                 if (addr_str != NULL)
 716                         addr = simple_strtoul(addr_str, NULL, 16);
 717                 else
 718                         addr = CONFIG_SYS_LOAD_ADDR;
 719         }
 720         if (argc >= 5) {
 721                 filename = argv[4];
 722         } else {
 723                 filename = env_get("bootfile");
 724                 if (!filename) {
 725                         puts("** No boot file defined **\n");
 726                         return 1;
 727                 }
 728         }
 729         if (argc >= 6)
 730                 bytes = simple_strtoul(argv[5], NULL, 16);
 731         else
 732                 bytes = 0;
 733         if (argc >= 7)
 734                 pos = simple_strtoul(argv[6], NULL, 16);
 735         else
 736                 pos = 0;
 737
 738         time = get_timer(0);
 739         ret = _fs_read(filename, addr, pos, bytes, 1, &len_read);
 740         time = get_timer(time);
 741         if (ret < 0) {
 742                 log_err("Failed to load '%s'\n", filename);
 743                 return 1;
 744         }
 745
 746         if (IS_ENABLED(CONFIG_CMD_BOOTEFI))
 747                 efi_set_bootdev(argv[1], (argc > 2) ? argv[2] : "",
 748                                 (argc > 4) ? argv[4] : "");
 749
 750         printf("%llu bytes read in %lu ms", len_read, time);
 751         if (time > 0) {
 752                 puts(" (");
 753                 print_size(div_u64(len_read, time) * 1000, "/s");
 754                 puts(")");
 755         }
 756         puts("\n");
 757
 758         env_set_hex("fileaddr", addr);
 759         env_set_hex("filesize", len_read);
 760
 761         return 0;
 762 }
 763
 764 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 765           int fstype)
 766 {
 767         if (argc < 2)
 768                 return CMD_RET_USAGE;
 769         if (argc > 4)
 770                 return CMD_RET_USAGE;
 771
 772         if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
 773                 return 1;
 774
 775         if (fs_ls(argc >= 4 ? argv[3] : "/"))
 776                 return 1;
 777
 778         return 0;
 779 }
 780
 781 int file_exists(const char *dev_type, const char *dev_part, const char *file,
 782                 int fstype)
 783 {
 784         if (fs_set_blk_dev(dev_type, dev_part, fstype))
 785                 return 0;
 786
 787         return fs_exists(file);
 788 }
 789
 790 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 791             int fstype)
 792 {
 793         unsigned long addr;
 794         const char *filename;
 795         loff_t bytes;
 796         loff_t pos;
 797         loff_t len;
 798         int ret;
 799         unsigned long time;
 800
 801         if (argc < 6 || argc > 7)
 802                 return CMD_RET_USAGE;
 803
 804         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 805                 return 1;
 806
 807         addr = simple_strtoul(argv[3], NULL, 16);
 808         filename = argv[4];
 809         bytes = simple_strtoul(argv[5], NULL, 16);
 810         if (argc >= 7)
 811                 pos = simple_strtoul(argv[6], NULL, 16);
 812         else
 813                 pos = 0;
 814
 815         time = get_timer(0);
 816         ret = fs_write(filename, addr, pos, bytes, &len);
 817         time = get_timer(time);
 818         if (ret < 0)
 819                 return 1;
 820
 821         printf("%llu bytes written in %lu ms", len, time);
 822         if (time > 0) {
 823                 puts(" (");
 824                 print_size(div_u64(len, time) * 1000, "/s");
 825                 puts(")");
 826         }
 827         puts("\n");
 828
 829         return 0;
 830 }
 831
 832 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 833                int fstype)
 834 {
 835         int ret;
 836         char uuid[37];
 837         memset(uuid, 0, sizeof(uuid));
 838
 839         if (argc < 3 || argc > 4)
 840                 return CMD_RET_USAGE;
 841
 842         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 843                 return 1;
 844
 845         ret = fs_uuid(uuid);
 846         if (ret)
 847                 return CMD_RET_FAILURE;
 848
 849         if (argc == 4)
 850                 env_set(argv[3], uuid);
 851         else
 852                 printf("%s\n", uuid);
 853
 854         return CMD_RET_SUCCESS;
 855 }
 856
 857 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 858 {
 859         struct fstype_info *info;
 860
 861         if (argc < 3 || argc > 4)
 862                 return CMD_RET_USAGE;
 863
 864         if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
 865                 return 1;
 866
 867         info = fs_get_info(fs_type);
 868
 869         if (argc == 4)
 870                 env_set(argv[3], info->name);
 871         else
 872                 printf("%s\n", info->name);
 873
 874         fs_close();
 875
 876         return CMD_RET_SUCCESS;
 877 }
 878
 879 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 880           int fstype)
 881 {
 882         if (argc != 4)
 883                 return CMD_RET_USAGE;
 884
 885         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 886                 return 1;
 887
 888         if (fs_unlink(argv[3]))
 889                 return 1;
 890
 891         return 0;
 892 }
 893
 894 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 895              int fstype)
 896 {
 897         int ret;
 898
 899         if (argc != 4)
 900                 return CMD_RET_USAGE;
 901
 902         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 903                 return 1;
 904
 905         ret = fs_mkdir(argv[3]);
 906         if (ret) {
 907                 log_err("** Unable to create a directory \"%s\" **\n", argv[3]);
 908                 return 1;
 909         }
 910
 911         return 0;
 912 }
 913
 914 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 915           int fstype)
 916 {
 917         if (argc != 5)
 918                 return CMD_RET_USAGE;
 919
 920         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 921                 return 1;
 922
 923         if (fs_ln(argv[3], argv[4]))
 924                 return 1;
 925
 926         return 0;
 927 }
 928
 929 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
 930 {
 931         struct fstype_info *drv = fstypes;
 932         const int n_ents = ARRAY_SIZE(fstypes);
 933         struct fstype_info *entry;
 934         int i = 0;
 935
 936         puts("Supported filesystems");
 937         for (entry = drv; entry != drv + n_ents; entry++) {
 938                 if (entry->fstype != FS_TYPE_ANY) {
 939                         printf("%c %s", i ? ',' : ':', entry->name);
 940                         i++;
 941                 }
 942         }
 943         if (!i)
 944                 puts(": <none>");
 945         puts("\n");
 946         return CMD_RET_SUCCESS;
 947 }