Re: [PATCH v2 1/2] man/man3/errno.3: Document EFTYPE error code

Alejandro Colomar
2026-04-27T13:13:11Z

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Hi Florian,

On 2026-04-27T12:34:30+0200, Florian Weimer wrote:
> * Alejandro Colomar:
>
> > [CC += libc-alpha]
> >
> > Hi Dorjoy,
> >
> > On 2026-04-26T17:14:25+0600, Dorjoy Chowdhury wrote:
> >> Signed-off-by: Dorjoy Chowdhury <dorjoychy111@gmail.com>
> >
> > Thanks!
> >
> > Reviewed-by: Alejandro Colomar <alx@kernel.org>
> >
> > I will wait until glibc adds this error code to their <errno.h> before
> > applying the patch. This means either you should write and send a patch
> > to glibc (if so, please CC me), or you should ask them to add it
> > themselves (if you're not comfortable writing glibc code).
>
> I'm not sure where this is coming from.

Here's a link to the thread:
<https://lore.kernel.org/linux-man/20260426111707.36541-1-dorjoychy111@gmail.com/T/>

> POSIX says EFTYPE was rejected
> in favor of ENOTTY.

Could you please share a link to that?

Anyway, I guess ENOTTY would be inappropriate in this case. Although
maybe a better error code could be devised; I don't know. This is why
I wanted glibc involved in this discussion before this arrives to a
Linux release. Thanks for the quick feedback!

> Thanks,
> Florian

Have a lovely day!
Alex

--
<https://www.alejandro-colomar.es>

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