On Thu, Oct 02, 2025 at 02:46:16PM +0800, Michael Chang via Grub-devel wrote:
> This patch adds the function fs_envblk_write to update the reserved
> environment block on disk. The helper takes an in memory envblk buffer
> and writes it back to the device at the location defined by the
> fs_envblk specification. It performs size checks and uses file sync to
> ensure that the updated data is flushed.
>
> The helper is also added into the fs_envblk ops table, together with the
> open helper from the previous patch. With this change the basic input
> and output path for an external environment block is complete. The
> choice of which variables should be written externally will be handled
> by later patches.
>
> Signed-off-by: Michael Chang <[email protected]>
> Reviewed-by: Neal Gompa <[email protected]>

Reviewed-by: Daniel Kiper <[email protected]>

Daniel

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