[U-Boot] [PATCH v5 0/7] Add support for symlink creation in EXT4

[Jean-Jacques Hiblot]

Please ignore. I didn't send the right branch.

Sorry for the noise

On 13/02/2019 11:48, Jean-Jacques Hiblot wrote:
> This series adds support for the creation of symbolic links on ext4
> file-systems.
> The motivation behind this work is to have the ability to "do" the job
> of update-alternatives in u-boot.
> Firmware on TI's platform are usually managed with update-alternatives and
> are thus targeted by a symbolic link. In some situations we need the
> ability to select an alternate firmware before the linux kernel is started
> so that when a early driver needing the firmware comes up, it can be fed
> the firmware of our choice.
>
> Tested on a am57xx_evm, using a EXT4 partition on external SDcard.
> The filesystem can be checked later with: fsck.ext4 -f <dev>
>
> usage example:
> => ln mmc 0:2 zImage /boot/the_linux_kernel
>
> Changes in v5:
> - Added filesystem integrity checks
> - Fix bug in ext4fs_delete_file(). The type must be read from the
>    inode.
>
> Changes in v4:
> - replaced u64 and u32 with uint64_t and uint32_t
>
> Changes in v3:
> - reworded commit log
> - removed FS integrity test (fsck) in python tests
>
> Changes in v2:
> - Prevent write access if metadata checksum is enabled
> - Fix issue in ext4fs_delete_file() when target in not stored in an
>    allocated block
> - Added python tests for symlinks under sandbox
>
> Jean-Jacques Hiblot (7):
>    fs: ext4: do not allow writes if metadata checksum is active
>    test: fs: disable the metadata checksums on ext4 filesystems
>    test: fs: Add filesystem integrity checks
>    fs: ext4: constify the buffer passed to write functions
>    fs: ext4: Add support for the creation of symbolic links
>    fs: Add a new command to create symbolic links
>    test: fs: Added tests for symlinks
>
>   cmd/fs.c                                |  14 +++
>   fs/ext4/ext4_common.c                   |   4 +-
>   fs/ext4/ext4_common.h                   |   2 +-
>   fs/ext4/ext4_write.c                    |  74 +++++++++++---
>   fs/fs.c                                 |  44 ++++++++
>   include/ext4fs.h                        |   6 +-
>   include/fs.h                            |   2 +
>   test/py/tests/test_fs/conftest.py       |  77 ++++++++++++++
>   test/py/tests/test_fs/fstest_defs.py    |   3 +
>   test/py/tests/test_fs/fstest_helpers.py |  15 +++
>   test/py/tests/test_fs/test_basic.py     |   4 +
>   test/py/tests/test_fs/test_ext.py       |  10 ++
>   test/py/tests/test_fs/test_mkdir.py     |   8 ++
>   test/py/tests/test_fs/test_symlink.py   | 129 ++++++++++++++++++++++++
>   test/py/tests/test_fs/test_unlink.py    |  14 ++-
>   15 files changed, 382 insertions(+), 24 deletions(-)
>   create mode 100644 test/py/tests/test_fs/fstest_helpers.py
>   create mode 100644 test/py/tests/test_fs/test_symlink.py
>