Re: [PATCH] boot: show all boot sources

[Rolf Evers-Fischer <embedded24@evers-fischer.de>]

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On Tue, 1 Jul 2014, Sascha Hauer wrote:

> On Mon, Jun 30, 2014 at 02:21:39PM +0200, Rolf Evers-Fischer wrote:
>> This patch fixes the presentation of all bootsources with 'boot -m' and
>> 'boot -l' command.
>>
>> Signed-off-by: Rolf Evers-Fischer <embedded24@evers-fischer.de>
>> ---
>>  commands/boot.c |    4 ++--
>>  1 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/commands/boot.c b/commands/boot.c
>> index c8eae10..1a1856d 100644
>> --- a/commands/boot.c
>> +++ b/commands/boot.c
>> @@ -433,12 +433,12 @@ static int do_boot(int argc, char *argv[])
>>         }
>>
>>         if (do_list) {
>> -               bootsources_list(sources, num_sources);
>> +               bootsources_list(&argv[optind], argc - optind);
>>                 goto out;
>>         }
>>
>>         if (do_menu) {
>> -               bootsources_menu(sources, num_sources);
>> +               bootsources_menu(&argv[optind], argc - optind);
>>                 goto out;
>>         }
>
> What exactly fixes this? Looking at the code we have:
>
> 	if (optind < argc) {
> 		num_sources = argc - optind;
> 		sources = xmemdup(&argv[optind], sizeof(char *) *num_sources);
> 	} else {
> 		...
> 	}
>
> Which should do what you want.

Unfortunately it doesn't do what I want. If I invoke "boot -l" on the bb
shell, I get optind=argc=2. Therefore barebox executes the "else" clause,
which lists only the default bootsource.

But now I understand that replacing the "<" with "<=" might be a better
fix for this problem:

diff --git a/commands/boot.c b/commands/boot.c
index ba26cac..9823538 100644
--- a/commands/boot.c
+++ b/commands/boot.c
@@ -395,7 +395,7 @@ static int do_boot(int argc, char *argv[])
                 }
         }

-       if (optind < argc) {
+       if (optind <= argc) {
                 num_sources = argc - optind;
                 sources = xmemdup(&argv[optind], sizeof(char *) *
num_sources);
         } else {

What is your opinion?


> On which barebox version are you?
I'm using barebox-2014.06.0.

Best regards,
  Rolf

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