From: Claus Assmann <ca+OpenBSD_tech@esmtp.org>
Subject: Re: smtpd: spell HOST_NAME_MAX differently (for -portable)
To: tech@openbsd.org
Date: Tue, 20 Aug 2024 13:49:26 +0000
Reply-To: tech@openbsd.org

Just for the fun of it - sendmail has this:

# if defined(__linux__) && MAXHOSTNAMELEN < 255
   /*
   **  override Linux weirdness: a FQHN can be 255 chars long
   **  SUSv3 requires HOST_NAME_MAX ("Maximum length of a host
   **  name (not including the terminating null) as returned from the
   **  gethostname() function.") to be at least 255.  c.f.:
   **  http://www.opengroup.org/onlinepubs/009695399
   **  but Linux defines that to 64 too.
   */
#  undef MAXHOSTNAMELEN
#  define MAXHOSTNAMELEN	256
# endif /* defined(__linux__) && MAXHOSTNAMELEN < 255 */

-- 
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