This is needed for incoming extent-cache infrastructure.
Signed-off-by: NQu Wenruo <wqu@suse.com>
Reviewed-by: NMarek Behún <marek.behun@nic.cz>

This patch uses generic code from btrfs-progs to read one super block
from block device.

To support the btrfs-progs coding style, the following is also
crossported:
- BTRFS_SETGET_FUNC for btrfs_super_block
- btrfs_check_super() function
- Move btrfs_read_superblock() to disk-io.[ch]
  Since super.c only contains pretty small amount of code, and
  the extra check will be covered in later root read patches.

Differences between this implementation and btrfs-progs:
- No sbflags/sb_bytenr support
  Since we only need to read the primary super block (like kernel),
  sbflags/sb_bytenr used by super block recovery is not needed.

This also changes the following behavior of U-Boot btrfs:
- Only reads the primary super block
  The old implementation reads all 3 super blocks, and also one
  non-existing backup.
  This is not correct, especially if there is another filesystem created
  on the device but old superblocks are not rewritten.

  Just like kernel, we only check the primary super block.
Signed-off-by: NQu Wenruo <wqu@suse.com>
Reviewed-by: NMarek Behún <marek.behun@nic.cz>
[trini: Change error to be a define in compat.h]
Signed-off-by: NTom Rini <trini@konsulko.com>

This mostly crossports crypto/hash.[ch] from btrfs-progs.

The differences are:
- No blake2 support
  No blake2 related library in U-Boot yet.

- Use uboot xxhash/sha256 directly
  No need to implement the code as U-Boot has already provided the
  interface.

This adds the support for the following csums:
- SHA256
- XXHASH
Signed-off-by: NQu Wenruo <wqu@suse.com>
Reviewed-by: NMarek Behún <marek.behun@nic.cz>

This version includes all needed on-disk format from kernel.

Only need to modify the include headers for U-Boot, everything else is
untouched.

Also, since U-Boot btrfs is using a different endian convert timing (at
tree block read time), it needs some forced type conversion before
proper crossport.
Signed-off-by: NQu Wenruo <wqu@suse.com>
Reviewed-by: NMarek Behún <marek.behun@nic.cz>

Use log functions for error and debug messages of the file-system.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Fix defects such as uninitialized variables and untrusted pointer
operations. Most part of the tainted variables and the related defects
actually comes from Linux's macro get_unaligned_le**, extensively used
in SquashFS code. Add sanity checks for those variables.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Add call to lzo's lzo1x_decompress_safe() into sqfs_decompress().

U-Boot's LZO sources may still have some unsolved issues that could make the
decompression crash when dealing with fragmented files, so those should be
avoided. The "-no-fragments" option can be passed to mksquashfs.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Add call to ZSTD's ZSTD_decompressDCtx(). In this use case, the caller
can upper bound the decompressed size, which will be the SquashFS data
block (or metadata block) size, so there is no need to use streaming
API. Add ZSTD's worskpace to squashfs_ctxt structure.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Replace 'u16 comp_type' by a reference to squashfs_ctxt structure.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Add sqfs_decompressor_init() and sqfs_decompressor_cleanup(). These
functions are called respectively in sqfs_probe() and sqfs_close(). For
now, only ZSTD requires an initialization logic. ZSTD support will be
added in a follow-up commit.

Move squashfs_ctxt definition to sqfs_filesystem.h. This structure is
passed to sqfs_decompressor_init() and sqfs_decompressor_cleanup(), so
it can no longer be local to sqfs.c.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Adds an 'else if' statement inside the loop to check for symbolic links.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Add call to zlib's 'uncompress' function. Add function to display the
right error message depending on the decompression's return value.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Add zlib (v1.2.11) uncompr() function to U-Boot. SquashFS depends on
this function to decompress data from a raw disk image. The actual
support for zlib into SquashFS sources will be added in a follow-up
commit.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

Add support for SquashFS filesystem. Right now, it does not support
compression but support for zlib will be added in a follow-up commit.
Signed-off-by: NJoao Marcos Costa <joaomarcos.costa@bootlin.com>

While using u-boot with qemu's virtio driver I stumbled across a
problem reading files less than sector size.  On the real hardware the
block reader seems ok with reading zero blocks, and while we could fix
the virtio host side of qemu to deal with a zero block read instead of
crashing, the u-boot fat driver should not be doing zero block reads
in the first place.  If you ask hardware to read zero blocks you are
just going to get zero data.  There may also be other hardware that
responds similarly to the virtio interface so this is worth fixing.

Without the patch I get the following and have to restart qemu because
it dies.
---------------------------------
=> fatls virtio 0:1
       30   cmdline.txt
=> fatload virtio 0:1 ${loadaddr} cmdline.txt
qemu-system-aarch64: virtio: zero sized buffers are not allowed
---------------------------------

With the patch I get the expected results.
---------------------------------
=> fatls virtio 0:1
       30   cmdline.txt
=> fatload virtio 0:1 ${loadaddr} cmdline.txt
30 bytes read in 11 ms (2 KiB/s)
=> md.b ${loadaddr} 0x1E
40080000: 64 77 63 5f 6f 74 67 2e 6c 70 6d 5f 65 6e 61 62    dwc_otg.lpm_enab
40080010: 6c 65 3d 30 20 72 6f 6f 74 77 61 69 74 0a          le=0 rootwait.

---------------------------------
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>
Reviewed-by: NTom Rini <trini@konsulko.com>

If a file cannot be loaded, show an error message.
Set the EFI boot device only after successfully loading a file.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Allocated tmpbuf_cluster dynamically to reduce the data size added by
compiling with CONFIG_FAT_WRITE.
Reported-by: NTom Rini <trini@konsulko.com>
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>

Truncate file names if the buffer size is exceeded to avoid a buffer
overflow.

Use Sphinx style function description.

Add a TODO comment.

Reported-by: CID 303779
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Added command "fstypes" to list supported/included filesystems.
Signed-off-by: NNiel Fourie <lusus@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: NSimon Glass <sjg@chromium.org>
[trini: Limit to sandbox]
Signed-off-by: NTom Rini <trini@konsulko.com>

According to the FAT specification it is valid to have files with an
attribute value of 0x0. This fixes a regression where different U-Boot
versions are showing different amount of files on the same storage
device. With this change U-Boot shows the same number of files and folders
as Linux and Windows.

Fixes: 39606d46 ("fs: fat: handle deleted directory entries correctly")
Signed-off-by: NChristian Gmeiner <christian.gmeiner@gmail.com>

The size is not actually used since it is present in the header. Drop this
parameter. Also tidy up error handling while we are here.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

Currently we support reading a file from CBFS given the address of the end
of the ROM. Sometimes we only know the start of the CBFS. Add a function
to find a file given that.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

This function currently returns a node pointer so there is no way to know
the error code. Also it uses data in BSS which seems unnecessary since the
caller might prefer to use a local variable.

Update the function and split its body out into a separate function so we
can use it later.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

We may as well return the error code and use it directly in the command
code. CBFS still uses its own error enum which we may be able to remove,
but leave it for now.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

The start address of the CBFS is used when scanning for files. It makes
sense to put this in our cbfs_priv struct and calculate it when we read
the header.

Update the code accordingly.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

It doesn't make sense to use u8 * as the pointer type for accessing the
CBFS since we do not access it as bytes, but via structures. Change it to
void *, which allows us to avoid a cast.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

These two functions have mostly the same code. Pull this out into a common
function.

Also make this function zero the private data so that callers don't have
to do it. Finally, update cbfs_load_header_ptr() to take the base of the
ROM as its parameter, which makes more sense than passing the address of
the header within the ROM.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

This function is strange at the moment in that it takes a header pointer
but then accesses the cbfs_s global. Currently clients have their own priv
pointer, so update the function to take that as a parameter instead.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

This function is strange at the moment in that it takes a header pointer
but then accesses the cbfs_s global. Currently clients have their own priv
pointer, so update the function to take that as a parameter instead.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

At present this uses a true return to indicate it found a file. Adjust it
to use 0 for this, so it is consistent with other functions.

Update its callers accordingly and add a check for malloc() failure in
file_cbfs_fill_cache().
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

At present this uses an int type. U-Boot now supports bool so use this
instead.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

U-Boot uses ulong for addresses but there are a few places in this driver
that don't use it. Convert this driver over to follow this convention
fully.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

At present the result variable in the cbfs_priv is called 'result' as is
the local variable in a few functions. Change the latter to 'ret' which is
more common in U-Boot and avoids confusion.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

Move this uncommon header out of the common header.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Move this uncommon header out of the common header.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Move this uncommon header out of the common header.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Move this header out of the common header.
Signed-off-by: NSimon Glass <sjg@chromium.org>

We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Move this uncommon header out of the common header.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Move this uncommon header out of the common header.
Signed-off-by: NSimon Glass <sjg@chromium.org>