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Subject: Re: [PATCH 3/3] checkkconfigsymbols.py: Forbid passing 'HEAD' to
 --commit
To:     Masahiro Yamada <masahiroy@kernel.org>,
        Ariel Marcovitch <arielmarcovitch@gmail.com>
Cc:     Michal Marek <michal.lkml@markovi.net>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Valentin Rothberg <valentinrothberg@gmail.com>
References: <20210822192205.43210-1-arielmarcovitch@gmail.com>
 <20210822192205.43210-4-arielmarcovitch@gmail.com>
 <CAK7LNARmSmTTPRWcgcPF8kRntSFuaPkLD0A=xuz=CAp4SzxV=Q@mail.gmail.com>
From:   Ariel Marcovitch <trhtkmarco@gmail.com>
Message-ID: <b7f9e9a8-6854-ef3b-a20c-3b4b3d2d8440@gmail.com>
Date:   Sun, 29 Aug 2021 16:23:29 +0300
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Hello!

On 24/08/2021 16:31, Masahiro Yamada wrote:
> On Mon, Aug 23, 2021 at 4:23 AM Ariel Marcovitch
> <arielmarcovitch@gmail.com> wrote:
>> As opposed to the --diff option, --commit can get ref names instead of
>> commit hashes.
>>
>> When using the --commit option, the script resets the working directory
>> to the commit before the given ref, by adding '~' to the end of the ref.
>>
>> However, the 'HEAD' ref is relative, and so when the working directory
>> is reset to 'HEAD~', 'HEAD' points to what was 'HEAD~'. Then when the
>> script resets to 'HEAD' it actually stays in the same commit. In this
>> case, the script won't report any cases because there is no diff between
>> the cases of the two refs.
>>
>> Prevent the user from using HEAD refs.
>>
>> A better solution might be to resolve the refs before doing the
>> reset, but for now just disallow such refs.
>
> Better than doing nothing.
> So, applied to linux-kbuild.
>
>
>
>
>
>> Signed-off-by: Ariel Marcovitch <arielmarcovitch@gmail.com>
>> ---
>>   scripts/checkkconfigsymbols.py | 3 +++
>>   1 file changed, 3 insertions(+)
>>
>> diff --git a/scripts/checkkconfigsymbols.py b/scripts/checkkconfigsymbols.py
>> index 875e9a2c14b2..6259698e662d 100755
>> --- a/scripts/checkkconfigsymbols.py
>> +++ b/scripts/checkkconfigsymbols.py
>> @@ -103,6 +103,9 @@ def parse_options():
>>                        "continue.")
>>
>>       if args.commit:
>> +        if args.commit.startswith('HEAD'):
>> +            sys.exit("The --commit option can't get use the HEAD ref")

Just realized that the message says "can't get use" which doesn't make
much sense :)

Do you want me to send a new patch to fix it?

>> +
>>           args.find = False
>>
>>       if args.ignore:
>> --
>> 2.25.1
>>
>
Thanks for your time :)

Ariel Marcovitch