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 <semihostingfs.h>
  22 #include <ubifs_uboot.h>
  23 #include <btrfs.h>
  24 #include <asm/global_data.h>
  25 #include <asm/io.h>
  26 #include <div64.h>
  27 #include <linux/math64.h>
  28 #include <efi_loader.h>
  29 #include <squashfs.h>
  30 #include <erofs.h>
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 static struct blk_desc *fs_dev_desc;
  35 static int fs_dev_part;
  36 static struct disk_partition fs_partition;
  37 static int fs_type = FS_TYPE_ANY;
  38
  39 static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
  40                                       struct disk_partition *fs_partition)
  41 {
  42         log_debug("Unrecognized filesystem type\n");
  43         return -1;
  44 }
  45
  46 static inline int fs_ls_unsupported(const char *dirname)
  47 {
  48         return -1;
  49 }
  50
  51 /* generic implementation of ls in terms of opendir/readdir/closedir */
  52 __maybe_unused
  53 static int fs_ls_generic(const char *dirname)
  54 {
  55         struct fs_dir_stream *dirs;
  56         struct fs_dirent *dent;
  57         int nfiles = 0, ndirs = 0;
  58
  59         dirs = fs_opendir(dirname);
  60         if (!dirs)
  61                 return -errno;
  62
  63         while ((dent = fs_readdir(dirs))) {
  64                 if (dent->type == FS_DT_DIR) {
  65                         printf("            %s/\n", dent->name);
  66                         ndirs++;
  67                 } else if (dent->type == FS_DT_LNK) {
  68                         printf("    <SYM>   %s\n", dent->name);
  69                         nfiles++;
  70                 } else {
  71                         printf(" %8lld   %s\n", dent->size, dent->name);
  72                         nfiles++;
  73                 }
  74         }
  75
  76         fs_closedir(dirs);
  77
  78         printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);
  79
  80         return 0;
  81 }
  82
  83 static inline int fs_exists_unsupported(const char *filename)
  84 {
  85         return 0;
  86 }
  87
  88 static inline int fs_size_unsupported(const char *filename, loff_t *size)
  89 {
  90         return -1;
  91 }
  92
  93 static inline int fs_read_unsupported(const char *filename, void *buf,
  94                                       loff_t offset, loff_t len,
  95                                       loff_t *actread)
  96 {
  97         return -1;
  98 }
  99
 100 static inline int fs_write_unsupported(const char *filename, void *buf,
 101                                       loff_t offset, loff_t len,
 102                                       loff_t *actwrite)
 103 {
 104         return -1;
 105 }
 106
 107 static inline int fs_ln_unsupported(const char *filename, const char *target)
 108 {
 109         return -1;
 110 }
 111
 112 static inline void fs_close_unsupported(void)
 113 {
 114 }
 115
 116 static inline int fs_uuid_unsupported(char *uuid_str)
 117 {
 118         return -1;
 119 }
 120
 121 static inline int fs_opendir_unsupported(const char *filename,
 122                                          struct fs_dir_stream **dirs)
 123 {
 124         return -EACCES;
 125 }
 126
 127 static inline int fs_unlink_unsupported(const char *filename)
 128 {
 129         return -1;
 130 }
 131
 132 static inline int fs_mkdir_unsupported(const char *dirname)
 133 {
 134         return -1;
 135 }
 136
 137 struct fstype_info {
 138         int fstype;
 139         char *name;
 140         /*
 141          * Is it legal to pass NULL as .probe()'s  fs_dev_desc parameter? This
 142          * should be false in most cases. For "virtual" filesystems which
 143          * aren't based on a U-Boot block device (e.g. sandbox), this can be
 144          * set to true. This should also be true for the dummy entry at the end
 145          * of fstypes[], since that is essentially a "virtual" (non-existent)
 146          * filesystem.
 147          */
 148         bool null_dev_desc_ok;
 149         int (*probe)(struct blk_desc *fs_dev_desc,
 150                      struct disk_partition *fs_partition);
 151         int (*ls)(const char *dirname);
 152         int (*exists)(const char *filename);
 153         int (*size)(const char *filename, loff_t *size);
 154         int (*read)(const char *filename, void *buf, loff_t offset,
 155                     loff_t len, loff_t *actread);
 156         int (*write)(const char *filename, void *buf, loff_t offset,
 157                      loff_t len, loff_t *actwrite);
 158         void (*close)(void);
 159         int (*uuid)(char *uuid_str);
 160         /*
 161          * Open a directory stream.  On success return 0 and directory
 162          * stream pointer via 'dirsp'.  On error, return -errno.  See
 163          * fs_opendir().
 164          */
 165         int (*opendir)(const char *filename, struct fs_dir_stream **dirsp);
 166         /*
 167          * Read next entry from directory stream.  On success return 0
 168          * and directory entry pointer via 'dentp'.  On error return
 169          * -errno.  See fs_readdir().
 170          */
 171         int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
 172         /* see fs_closedir() */
 173         void (*closedir)(struct fs_dir_stream *dirs);
 174         int (*unlink)(const char *filename);
 175         int (*mkdir)(const char *dirname);
 176         int (*ln)(const char *filename, const char *target);
 177 };
 178
 179 static struct fstype_info fstypes[] = {
 180 #if CONFIG_IS_ENABLED(FS_FAT)
 181         {
 182                 .fstype = FS_TYPE_FAT,
 183                 .name = "fat",
 184                 .null_dev_desc_ok = false,
 185                 .probe = fat_set_blk_dev,
 186                 .close = fat_close,
 187                 .ls = fs_ls_generic,
 188                 .exists = fat_exists,
 189                 .size = fat_size,
 190                 .read = fat_read_file,
 191 #if CONFIG_IS_ENABLED(FAT_WRITE)
 192                 .write = file_fat_write,
 193                 .unlink = fat_unlink,
 194                 .mkdir = fat_mkdir,
 195 #else
 196                 .write = fs_write_unsupported,
 197                 .unlink = fs_unlink_unsupported,
 198                 .mkdir = fs_mkdir_unsupported,
 199 #endif
 200                 .uuid = fat_uuid,
 201                 .opendir = fat_opendir,
 202                 .readdir = fat_readdir,
 203                 .closedir = fat_closedir,
 204                 .ln = fs_ln_unsupported,
 205         },
 206 #endif
 207
 208 #if CONFIG_IS_ENABLED(FS_EXT4)
 209         {
 210                 .fstype = FS_TYPE_EXT,
 211                 .name = "ext4",
 212                 .null_dev_desc_ok = false,
 213                 .probe = ext4fs_probe,
 214                 .close = ext4fs_close,
 215                 .ls = ext4fs_ls,
 216                 .exists = ext4fs_exists,
 217                 .size = ext4fs_size,
 218                 .read = ext4_read_file,
 219 #ifdef CONFIG_CMD_EXT4_WRITE
 220                 .write = ext4_write_file,
 221                 .ln = ext4fs_create_link,
 222 #else
 223                 .write = fs_write_unsupported,
 224                 .ln = fs_ln_unsupported,
 225 #endif
 226                 .uuid = ext4fs_uuid,
 227                 .opendir = fs_opendir_unsupported,
 228                 .unlink = fs_unlink_unsupported,
 229                 .mkdir = fs_mkdir_unsupported,
 230         },
 231 #endif
 232 #ifdef CONFIG_SANDBOX
 233         {
 234                 .fstype = FS_TYPE_SANDBOX,
 235                 .name = "sandbox",
 236                 .null_dev_desc_ok = true,
 237                 .probe = sandbox_fs_set_blk_dev,
 238                 .close = sandbox_fs_close,
 239                 .ls = sandbox_fs_ls,
 240                 .exists = sandbox_fs_exists,
 241                 .size = sandbox_fs_size,
 242                 .read = fs_read_sandbox,
 243                 .write = fs_write_sandbox,
 244                 .uuid = fs_uuid_unsupported,
 245                 .opendir = fs_opendir_unsupported,
 246                 .unlink = fs_unlink_unsupported,
 247                 .mkdir = fs_mkdir_unsupported,
 248                 .ln = fs_ln_unsupported,
 249         },
 250 #endif
 251 #ifdef CONFIG_SEMIHOSTING
 252         {
 253                 .fstype = FS_TYPE_SEMIHOSTING,
 254                 .name = "semihosting",
 255                 .null_dev_desc_ok = true,
 256                 .probe = smh_fs_set_blk_dev,
 257                 .close = fs_close_unsupported,
 258                 .ls = fs_ls_unsupported,
 259                 .exists = fs_exists_unsupported,
 260                 .size = smh_fs_size,
 261                 .read = smh_fs_read,
 262                 .write = smh_fs_write,
 263                 .uuid = fs_uuid_unsupported,
 264                 .opendir = fs_opendir_unsupported,
 265                 .unlink = fs_unlink_unsupported,
 266                 .mkdir = fs_mkdir_unsupported,
 267                 .ln = fs_ln_unsupported,
 268         },
 269 #endif
 270 #ifndef CONFIG_SPL_BUILD
 271 #ifdef CONFIG_CMD_UBIFS
 272         {
 273                 .fstype = FS_TYPE_UBIFS,
 274                 .name = "ubifs",
 275                 .null_dev_desc_ok = true,
 276                 .probe = ubifs_set_blk_dev,
 277                 .close = ubifs_close,
 278                 .ls = ubifs_ls,
 279                 .exists = ubifs_exists,
 280                 .size = ubifs_size,
 281                 .read = ubifs_read,
 282                 .write = fs_write_unsupported,
 283                 .uuid = fs_uuid_unsupported,
 284                 .opendir = fs_opendir_unsupported,
 285                 .unlink = fs_unlink_unsupported,
 286                 .mkdir = fs_mkdir_unsupported,
 287                 .ln = fs_ln_unsupported,
 288         },
 289 #endif
 290 #endif
 291 #ifdef CONFIG_FS_BTRFS
 292         {
 293                 .fstype = FS_TYPE_BTRFS,
 294                 .name = "btrfs",
 295                 .null_dev_desc_ok = false,
 296                 .probe = btrfs_probe,
 297                 .close = btrfs_close,
 298                 .ls = btrfs_ls,
 299                 .exists = btrfs_exists,
 300                 .size = btrfs_size,
 301                 .read = btrfs_read,
 302                 .write = fs_write_unsupported,
 303                 .uuid = btrfs_uuid,
 304                 .opendir = fs_opendir_unsupported,
 305                 .unlink = fs_unlink_unsupported,
 306                 .mkdir = fs_mkdir_unsupported,
 307                 .ln = fs_ln_unsupported,
 308         },
 309 #endif
 310 #if IS_ENABLED(CONFIG_FS_SQUASHFS)
 311         {
 312                 .fstype = FS_TYPE_SQUASHFS,
 313                 .name = "squashfs",
 314                 .null_dev_desc_ok = false,
 315                 .probe = sqfs_probe,
 316                 .opendir = sqfs_opendir,
 317                 .readdir = sqfs_readdir,
 318                 .ls = fs_ls_generic,
 319                 .read = sqfs_read,
 320                 .size = sqfs_size,
 321                 .close = sqfs_close,
 322                 .closedir = sqfs_closedir,
 323                 .exists = sqfs_exists,
 324                 .uuid = fs_uuid_unsupported,
 325                 .write = fs_write_unsupported,
 326                 .ln = fs_ln_unsupported,
 327                 .unlink = fs_unlink_unsupported,
 328                 .mkdir = fs_mkdir_unsupported,
 329         },
 330 #endif
 331 #if IS_ENABLED(CONFIG_FS_EROFS)
 332         {
 333                 .fstype = FS_TYPE_EROFS,
 334                 .name = "erofs",
 335                 .null_dev_desc_ok = false,
 336                 .probe = erofs_probe,
 337                 .opendir = erofs_opendir,
 338                 .readdir = erofs_readdir,
 339                 .ls = fs_ls_generic,
 340                 .read = erofs_read,
 341                 .size = erofs_size,
 342                 .close = erofs_close,
 343                 .closedir = erofs_closedir,
 344                 .exists = erofs_exists,
 345                 .uuid = fs_uuid_unsupported,
 346                 .write = fs_write_unsupported,
 347                 .ln = fs_ln_unsupported,
 348                 .unlink = fs_unlink_unsupported,
 349                 .mkdir = fs_mkdir_unsupported,
 350         },
 351 #endif
 352         {
 353                 .fstype = FS_TYPE_ANY,
 354                 .name = "unsupported",
 355                 .null_dev_desc_ok = true,
 356                 .probe = fs_probe_unsupported,
 357                 .close = fs_close_unsupported,
 358                 .ls = fs_ls_unsupported,
 359                 .exists = fs_exists_unsupported,
 360                 .size = fs_size_unsupported,
 361                 .read = fs_read_unsupported,
 362                 .write = fs_write_unsupported,
 363                 .uuid = fs_uuid_unsupported,
 364                 .opendir = fs_opendir_unsupported,
 365                 .unlink = fs_unlink_unsupported,
 366                 .mkdir = fs_mkdir_unsupported,
 367                 .ln = fs_ln_unsupported,
 368         },
 369 };
 370
 371 static struct fstype_info *fs_get_info(int fstype)
 372 {
 373         struct fstype_info *info;
 374         int i;
 375
 376         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
 377                 if (fstype == info->fstype)
 378                         return info;
 379         }
 380
 381         /* Return the 'unsupported' sentinel */
 382         return info;
 383 }
 384
 385 /**
 386  * fs_get_type() - Get type of current filesystem
 387  *
 388  * Return: filesystem type
 389  *
 390  * Returns filesystem type representing the current filesystem, or
 391  * FS_TYPE_ANY for any unrecognised filesystem.
 392  */
 393 int fs_get_type(void)
 394 {
 395         return fs_type;
 396 }
 397
 398 /**
 399  * fs_get_type_name() - Get type of current filesystem
 400  *
 401  * Return: Pointer to filesystem name
 402  *
 403  * Returns a string describing the current filesystem, or the sentinel
 404  * "unsupported" for any unrecognised filesystem.
 405  */
 406 const char *fs_get_type_name(void)
 407 {
 408         return fs_get_info(fs_type)->name;
 409 }
 410
 411 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
 412 {
 413         struct fstype_info *info;
 414         int part, i;
 415 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 416         static int relocated;
 417
 418         if (!relocated) {
 419                 for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
 420                                 i++, info++) {
 421                         info->name += gd->reloc_off;
 422                         info->probe += gd->reloc_off;
 423                         info->close += gd->reloc_off;
 424                         info->ls += gd->reloc_off;
 425                         info->read += gd->reloc_off;
 426                         info->write += gd->reloc_off;
 427                 }
 428                 relocated = 1;
 429         }
 430 #endif
 431
 432         part = part_get_info_by_dev_and_name_or_num(ifname, dev_part_str, &fs_dev_desc,
 433                                                     &fs_partition, 1);
 434         if (part < 0)
 435                 return -1;
 436
 437         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
 438                 if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
 439                                 fstype != info->fstype)
 440                         continue;
 441
 442                 if (!fs_dev_desc && !info->null_dev_desc_ok)
 443                         continue;
 444
 445                 if (!info->probe(fs_dev_desc, &fs_partition)) {
 446                         fs_type = info->fstype;
 447                         fs_dev_part = part;
 448                         return 0;
 449                 }
 450         }
 451
 452         return -1;
 453 }
 454
 455 /* set current blk device w/ blk_desc + partition # */
 456 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part)
 457 {
 458         struct fstype_info *info;
 459         int ret, i;
 460
 461         if (part >= 1)
 462                 ret = part_get_info(desc, part, &fs_partition);
 463         else
 464                 ret = part_get_info_whole_disk(desc, &fs_partition);
 465         if (ret)
 466                 return ret;
 467         fs_dev_desc = desc;
 468
 469         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
 470                 if (!info->probe(fs_dev_desc, &fs_partition)) {
 471                         fs_type = info->fstype;
 472                         fs_dev_part = part;
 473                         return 0;
 474                 }
 475         }
 476
 477         return -1;
 478 }
 479
 480 void fs_close(void)
 481 {
 482         struct fstype_info *info = fs_get_info(fs_type);
 483
 484         info->close();
 485
 486         fs_type = FS_TYPE_ANY;
 487 }
 488
 489 int fs_uuid(char *uuid_str)
 490 {
 491         struct fstype_info *info = fs_get_info(fs_type);
 492
 493         return info->uuid(uuid_str);
 494 }
 495
 496 int fs_ls(const char *dirname)
 497 {
 498         int ret;
 499
 500         struct fstype_info *info = fs_get_info(fs_type);
 501
 502         ret = info->ls(dirname);
 503
 504         fs_close();
 505
 506         return ret;
 507 }
 508
 509 int fs_exists(const char *filename)
 510 {
 511         int ret;
 512
 513         struct fstype_info *info = fs_get_info(fs_type);
 514
 515         ret = info->exists(filename);
 516
 517         fs_close();
 518
 519         return ret;
 520 }
 521
 522 int fs_size(const char *filename, loff_t *size)
 523 {
 524         int ret;
 525
 526         struct fstype_info *info = fs_get_info(fs_type);
 527
 528         ret = info->size(filename, size);
 529
 530         fs_close();
 531
 532         return ret;
 533 }
 534
 535 #ifdef CONFIG_LMB
 536 /* Check if a file may be read to the given address */
 537 static int fs_read_lmb_check(const char *filename, ulong addr, loff_t offset,
 538                              loff_t len, struct fstype_info *info)
 539 {
 540         struct lmb lmb;
 541         int ret;
 542         loff_t size;
 543         loff_t read_len;
 544
 545         /* get the actual size of the file */
 546         ret = info->size(filename, &size);
 547         if (ret)
 548                 return ret;
 549         if (offset >= size) {
 550                 /* offset >= EOF, no bytes will be written */
 551                 return 0;
 552         }
 553         read_len = size - offset;
 554
 555         /* limit to 'len' if it is smaller */
 556         if (len && len < read_len)
 557                 read_len = len;
 558
 559         lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
 560         lmb_dump_all(&lmb);
 561
 562         if (lmb_alloc_addr(&lmb, addr, read_len) == addr)
 563                 return 0;
 564
 565         log_err("** Reading file would overwrite reserved memory **\n");
 566         return -ENOSPC;
 567 }
 568 #endif
 569
 570 static int _fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
 571                     int do_lmb_check, loff_t *actread)
 572 {
 573         struct fstype_info *info = fs_get_info(fs_type);
 574         void *buf;
 575         int ret;
 576
 577 #ifdef CONFIG_LMB
 578         if (do_lmb_check) {
 579                 ret = fs_read_lmb_check(filename, addr, offset, len, info);
 580                 if (ret)
 581                         return ret;
 582         }
 583 #endif
 584
 585         /*
 586          * We don't actually know how many bytes are being read, since len==0
 587          * means read the whole file.
 588          */
 589         buf = map_sysmem(addr, len);
 590         ret = info->read(filename, buf, offset, len, actread);
 591         unmap_sysmem(buf);
 592
 593         /* If we requested a specific number of bytes, check we got it */
 594         if (ret == 0 && len && *actread != len)
 595                 log_debug("** %s shorter than offset + len **\n", filename);
 596         fs_close();
 597
 598         return ret;
 599 }
 600
 601 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
 602             loff_t *actread)
 603 {
 604         return _fs_read(filename, addr, offset, len, 0, actread);
 605 }
 606
 607 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
 608              loff_t *actwrite)
 609 {
 610         struct fstype_info *info = fs_get_info(fs_type);
 611         void *buf;
 612         int ret;
 613
 614         buf = map_sysmem(addr, len);
 615         ret = info->write(filename, buf, offset, len, actwrite);
 616         unmap_sysmem(buf);
 617
 618         if (ret < 0 && len != *actwrite) {
 619                 log_err("** Unable to write file %s **\n", filename);
 620                 ret = -1;
 621         }
 622         fs_close();
 623
 624         return ret;
 625 }
 626
 627 struct fs_dir_stream *fs_opendir(const char *filename)
 628 {
 629         struct fstype_info *info = fs_get_info(fs_type);
 630         struct fs_dir_stream *dirs = NULL;
 631         int ret;
 632
 633         ret = info->opendir(filename, &dirs);
 634         fs_close();
 635         if (ret) {
 636                 errno = -ret;
 637                 return NULL;
 638         }
 639
 640         dirs->desc = fs_dev_desc;
 641         dirs->part = fs_dev_part;
 642
 643         return dirs;
 644 }
 645
 646 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs)
 647 {
 648         struct fstype_info *info;
 649         struct fs_dirent *dirent;
 650         int ret;
 651
 652         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
 653         info = fs_get_info(fs_type);
 654
 655         ret = info->readdir(dirs, &dirent);
 656         fs_close();
 657         if (ret) {
 658                 errno = -ret;
 659                 return NULL;
 660         }
 661
 662         return dirent;
 663 }
 664
 665 void fs_closedir(struct fs_dir_stream *dirs)
 666 {
 667         struct fstype_info *info;
 668
 669         if (!dirs)
 670                 return;
 671
 672         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
 673         info = fs_get_info(fs_type);
 674
 675         info->closedir(dirs);
 676         fs_close();
 677 }
 678
 679 int fs_unlink(const char *filename)
 680 {
 681         int ret;
 682
 683         struct fstype_info *info = fs_get_info(fs_type);
 684
 685         ret = info->unlink(filename);
 686
 687         fs_close();
 688
 689         return ret;
 690 }
 691
 692 int fs_mkdir(const char *dirname)
 693 {
 694         int ret;
 695
 696         struct fstype_info *info = fs_get_info(fs_type);
 697
 698         ret = info->mkdir(dirname);
 699
 700         fs_close();
 701
 702         return ret;
 703 }
 704
 705 int fs_ln(const char *fname, const char *target)
 706 {
 707         struct fstype_info *info = fs_get_info(fs_type);
 708         int ret;
 709
 710         ret = info->ln(fname, target);
 711
 712         if (ret < 0) {
 713                 log_err("** Unable to create link %s -> %s **\n", fname, target);
 714                 ret = -1;
 715         }
 716         fs_close();
 717
 718         return ret;
 719 }
 720
 721 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 722             int fstype)
 723 {
 724         loff_t size;
 725
 726         if (argc != 4)
 727                 return CMD_RET_USAGE;
 728
 729         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 730                 return 1;
 731
 732         if (fs_size(argv[3], &size) < 0)
 733                 return CMD_RET_FAILURE;
 734
 735         env_set_hex("filesize", size);
 736
 737         return 0;
 738 }
 739
 740 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 741             int fstype)
 742 {
 743         unsigned long addr;
 744         const char *addr_str;
 745         const char *filename;
 746         loff_t bytes;
 747         loff_t pos;
 748         loff_t len_read;
 749         int ret;
 750         unsigned long time;
 751         char *ep;
 752
 753         if (argc < 2)
 754                 return CMD_RET_USAGE;
 755         if (argc > 7)
 756                 return CMD_RET_USAGE;
 757
 758         if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype)) {
 759                 log_err("Can't set block device\n");
 760                 return 1;
 761         }
 762
 763         if (argc >= 4) {
 764                 addr = hextoul(argv[3], &ep);
 765                 if (ep == argv[3] || *ep != '\0')
 766                         return CMD_RET_USAGE;
 767         } else {
 768                 addr_str = env_get("loadaddr");
 769                 if (addr_str != NULL)
 770                         addr = hextoul(addr_str, NULL);
 771                 else
 772                         addr = CONFIG_SYS_LOAD_ADDR;
 773         }
 774         if (argc >= 5) {
 775                 filename = argv[4];
 776         } else {
 777                 filename = env_get("bootfile");
 778                 if (!filename) {
 779                         puts("** No boot file defined **\n");
 780                         return 1;
 781                 }
 782         }
 783         if (argc >= 6)
 784                 bytes = hextoul(argv[5], NULL);
 785         else
 786                 bytes = 0;
 787         if (argc >= 7)
 788                 pos = hextoul(argv[6], NULL);
 789         else
 790                 pos = 0;
 791
 792         time = get_timer(0);
 793         ret = _fs_read(filename, addr, pos, bytes, 1, &len_read);
 794         time = get_timer(time);
 795         if (ret < 0) {
 796                 log_err("Failed to load '%s'\n", filename);
 797                 return 1;
 798         }
 799
 800         if (IS_ENABLED(CONFIG_CMD_BOOTEFI))
 801                 efi_set_bootdev(argv[1], (argc > 2) ? argv[2] : "",
 802                                 (argc > 4) ? argv[4] : "", map_sysmem(addr, 0),
 803                                 len_read);
 804
 805         printf("%llu bytes read in %lu ms", len_read, time);
 806         if (time > 0) {
 807                 puts(" (");
 808                 print_size(div_u64(len_read, time) * 1000, "/s");
 809                 puts(")");
 810         }
 811         puts("\n");
 812
 813         env_set_hex("fileaddr", addr);
 814         env_set_hex("filesize", len_read);
 815
 816         return 0;
 817 }
 818
 819 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 820           int fstype)
 821 {
 822         if (argc < 2)
 823                 return CMD_RET_USAGE;
 824         if (argc > 4)
 825                 return CMD_RET_USAGE;
 826
 827         if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
 828                 return 1;
 829
 830         if (fs_ls(argc >= 4 ? argv[3] : "/"))
 831                 return 1;
 832
 833         return 0;
 834 }
 835
 836 int file_exists(const char *dev_type, const char *dev_part, const char *file,
 837                 int fstype)
 838 {
 839         if (fs_set_blk_dev(dev_type, dev_part, fstype))
 840                 return 0;
 841
 842         return fs_exists(file);
 843 }
 844
 845 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 846             int fstype)
 847 {
 848         unsigned long addr;
 849         const char *filename;
 850         loff_t bytes;
 851         loff_t pos;
 852         loff_t len;
 853         int ret;
 854         unsigned long time;
 855
 856         if (argc < 6 || argc > 7)
 857                 return CMD_RET_USAGE;
 858
 859         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 860                 return 1;
 861
 862         addr = hextoul(argv[3], NULL);
 863         filename = argv[4];
 864         bytes = hextoul(argv[5], NULL);
 865         if (argc >= 7)
 866                 pos = hextoul(argv[6], NULL);
 867         else
 868                 pos = 0;
 869
 870         time = get_timer(0);
 871         ret = fs_write(filename, addr, pos, bytes, &len);
 872         time = get_timer(time);
 873         if (ret < 0)
 874                 return 1;
 875
 876         printf("%llu bytes written in %lu ms", len, time);
 877         if (time > 0) {
 878                 puts(" (");
 879                 print_size(div_u64(len, time) * 1000, "/s");
 880                 puts(")");
 881         }
 882         puts("\n");
 883
 884         return 0;
 885 }
 886
 887 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 888                int fstype)
 889 {
 890         int ret;
 891         char uuid[37];
 892         memset(uuid, 0, sizeof(uuid));
 893
 894         if (argc < 3 || argc > 4)
 895                 return CMD_RET_USAGE;
 896
 897         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 898                 return 1;
 899
 900         ret = fs_uuid(uuid);
 901         if (ret)
 902                 return CMD_RET_FAILURE;
 903
 904         if (argc == 4)
 905                 env_set(argv[3], uuid);
 906         else
 907                 printf("%s\n", uuid);
 908
 909         return CMD_RET_SUCCESS;
 910 }
 911
 912 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 913 {
 914         struct fstype_info *info;
 915
 916         if (argc < 3 || argc > 4)
 917                 return CMD_RET_USAGE;
 918
 919         if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
 920                 return 1;
 921
 922         info = fs_get_info(fs_type);
 923
 924         if (argc == 4)
 925                 env_set(argv[3], info->name);
 926         else
 927                 printf("%s\n", info->name);
 928
 929         fs_close();
 930
 931         return CMD_RET_SUCCESS;
 932 }
 933
 934 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 935           int fstype)
 936 {
 937         if (argc != 4)
 938                 return CMD_RET_USAGE;
 939
 940         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 941                 return 1;
 942
 943         if (fs_unlink(argv[3]))
 944                 return 1;
 945
 946         return 0;
 947 }
 948
 949 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 950              int fstype)
 951 {
 952         int ret;
 953
 954         if (argc != 4)
 955                 return CMD_RET_USAGE;
 956
 957         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 958                 return 1;
 959
 960         ret = fs_mkdir(argv[3]);
 961         if (ret) {
 962                 log_err("** Unable to create a directory \"%s\" **\n", argv[3]);
 963                 return 1;
 964         }
 965
 966         return 0;
 967 }
 968
 969 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 970           int fstype)
 971 {
 972         if (argc != 5)
 973                 return CMD_RET_USAGE;
 974
 975         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 976                 return 1;
 977
 978         if (fs_ln(argv[3], argv[4]))
 979                 return 1;
 980
 981         return 0;
 982 }
 983
 984 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
 985 {
 986         struct fstype_info *drv = fstypes;
 987         const int n_ents = ARRAY_SIZE(fstypes);
 988         struct fstype_info *entry;
 989         int i = 0;
 990
 991         puts("Supported filesystems");
 992         for (entry = drv; entry != drv + n_ents; entry++) {
 993                 if (entry->fstype != FS_TYPE_ANY) {
 994                         printf("%c %s", i ? ',' : ':', entry->name);
 995                         i++;
 996                 }
 997         }
 998         if (!i)
 999                 puts(": <none>");
1000         puts("\n");
1001         return CMD_RET_SUCCESS;
1002 }