[U-Boot] [PATCH v1 0/3] Add support for symlink creation in EXT4

[Lukasz Majewski]

On Tue, 29 Jan 2019 14:40:08 +0100
Jean-Jacques Hiblot <jjhiblot at ti.com> 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 

Could you also add a test for symlink to sandbox? This is a high level
code (FS ext4), so it can be nice tested there.
 
> 
> 
> Jean-Jacques Hiblot (3):
>   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
> 
>  cmd/fs.c              | 14 ++++++++++++
>  fs/ext4/ext4_common.c |  6 ++---
>  fs/ext4/ext4_common.h |  2 +-
>  fs/ext4/ext4_write.c  | 51
> ++++++++++++++++++++++++++++++++----------- fs/fs.c               |
> 44 +++++++++++++++++++++++++++++++++++++ include/ext4fs.h      |  5
> +++-- include/fs.h          |  2 ++
>  7 files changed, 105 insertions(+), 19 deletions(-)
> 




Best regards,

Lukasz Majewski

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