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SubjectRe: [PATCH] binfmt_misc: pass binfmt_misc P flag to the interpreter
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Le 06/03/2020 à 09:37, Florian Weimer a écrit :
> * Laurent Vivier:
>
>> Le 06/03/2020 à 09:13, Florian Weimer a écrit :
>>> * YunQiang Su:
>>>
>>>> + if (bprm->interp_flags & BINPRM_FLAGS_PRESERVE_ARGV0)
>>>> + flags |= AT_FLAGS_PRESERVE_ARGV0;
>>>> + NEW_AUX_ENT(AT_FLAGS, flags);
>>>
>>> Is it necessary to reuse AT_FLAGS? I think it's cleaner to define a
>>> separate AT_ tag dedicated to binfmt_misc.
>>
>> Not necessary, but it seemed simpler and cleaner to re-use a flag that
>> is marked as unused and with a name matching the new role. It avoids to
>> patch other packages (like glibc) to add it as it is already defined.
>
> You still need to define AT_FLAGS_PRESERVE_ARGV0. At that point, you
> might as well define AT_BINFMT and AT_BINFMT_PRESERVE_ARGV0.
>

Yes, you're right.

But is there any reason to not reuse AT_FLAGS?

Thanks,
Laurent

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