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Re: [PATCH] Linux: Add getdents64 system call
On 29/05/2019 05:17, Florian Weimer wrote:
> * Adhemerval Zanella:
>
>> My understanding is lseek from getdirentries is not really useless, but
>> exactly the semantic it aims to provide. Linux getdents does not have
>> the concept of offset, different than BSDs one which is usually
>> syscall (FreeBSD for instance).
>
> It's not a real offset in FreeBSD, either, in the sense that you can
> perform arithmetic on it. Our implementation is not compatible because
> it does not perform a NULL check and assumes that the pointer to the
> base offset is always non-NULL.
>
>> I am not sure, however, who usefull this is in reality. On FreeBSD repo
>> (not including ports), I see few uses: sdiff tool is the only binary and
>> opendir seems call it internally.
>
> I think providing this function is also misleading because there are
> differences in parsing the directory stream.
Right, this is two more point in favour of deprecating it.