[PATCH] fastboot: properly handle unknown partition type

[Mattijs Korpershoek]

Hi Caleb,

Thank you for the patch.

On mer., nov. 13, 2024 at 06:05, Caleb Connolly <caleb.connolly at linaro.org> wrote:

> In getvar_partition_type() we attempt to find a filesystem driver for
> the partition (of the list of driver enabled in U-Boot), on failure we
> return the error to fastboot and completely bail out of the operation.
>
> However, this should not be a failure, instead we should just default to
> "raw". This allows commands like "fastboot format:ext4 userdata" to work
> if userdata didn't already have an ext4 partition table (or if FS_EXT4
> is disabled in U-Boot), as failing to determine the current partition
> type is not an error in this case.
>
> Signed-off-by: Caleb Connolly <caleb.connolly at linaro.org>

Reviewed-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>

> ---
>  drivers/fastboot/fb_getvar.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/fastboot/fb_getvar.c b/drivers/fastboot/fb_getvar.c
> index 93cbd598e024..9c2ce65a4e5b 100644
> --- a/drivers/fastboot/fb_getvar.c
> +++ b/drivers/fastboot/fb_getvar.c
> @@ -229,9 +229,10 @@ static void __maybe_unused getvar_partition_type(char *part_name, char *response
>  				       response);
>  	if (r >= 0) {
>  		r = fs_set_blk_dev_with_part(dev_desc, r);
>  		if (r < 0)
> -			fastboot_fail("failed to set partition", response);
> +			/* If we don't know then just default to raw */
> +			fastboot_okay("raw", response);
>  		else
>  			fastboot_okay(fs_get_type_name(), response);
>  	}
>  }
> -- 
> 2.47.0