From: Todd C. Miller <millert@openbsd.org>
Subject: Re: smtpd: spell HOST_NAME_MAX differently (for -portable)
To: Florian Obser <florian@openbsd.org>
Cc: Omar Polo <op@omarpolo.com>, tech@openbsd.org, gilles@poolp.org
Date: Tue, 20 Aug 2024 09:16:42 -0600

On Tue, 20 Aug 2024 14:49:06 +0200, Florian Obser wrote:

> I think they should fix their libc.
>
> posix has this to say:
>
> {HOST_NAME_MAX}
>     Maximum length of a host name (not including the terminating null) as ret
> urned from the gethostname() function.
>     Minimum Acceptable Value: {_POSIX_HOST_NAME_MAX}
>
> {_POSIX_HOST_NAME_MAX}
>     Maximum length of a host name (not including the terminating null) as ret
> urned from the gethostname() function.
>     Value: 255

Wow, even sysconf(_SC_HOST_NAME_MAX) returns 64 on Linux with glibc.
What a time to be alive!

 - todd