[PATCH] common: fastboot: send FAIL if variable does not exist

[Ahmad Fatoum]

Hello Andrei,

On 6/11/25 19:56, Andrei Lalaev wrote:
> According to doc [1], new implementations should send FAIL if the
> variable specified in the getvar command does not exist.
> 
> [1]: https://android.googlesource.com/platform/system/core/+show/refs/heads/main/fastboot/README.md#121
> 
> Signed-off-by: Andrei Lalaev <andrey.lalaev at gmail.com>

Did you run into any particular issues that motivated your change?

I am asking, because this causes error output for is-logical:$partition,
which barebox didn't implement.

I sent a patch to implement it, but would be good to know the backstory
on this patch. :)

Thanks,
Ahmad

> ---
>  common/fastboot.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/common/fastboot.c b/common/fastboot.c
> index 56bc4e82c4..3df3c227a3 100644
> --- a/common/fastboot.c
> +++ b/common/fastboot.c
> @@ -372,7 +372,7 @@ static void cb_getvar(struct fastboot *fb, const char *cmd)
>  		goto out;
>  
>  skip_partitions:
> -	fastboot_tx_print(fb, FASTBOOT_MSG_OKAY, "");
> +	fastboot_tx_print(fb, FASTBOOT_MSG_FAIL, "");
>  out:
>  	fastboot_free_variables(&partition_list);
>  }

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