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Date:      Tue, 2 Jul 1996 21:12:25 +0200 (MET DST)
From:      J Wunsch <j@uriah.heep.sax.de>
To:        freebsd-current@FreeBSD.org (FreeBSD-current users)
Subject:   Re: cvs commit:  src/release/sysinstall config.c
Message-ID:  <199607021912.VAA12572@uriah.heep.sax.de>
In-Reply-To: <199607020912.CAA14084@freefall.freebsd.org> from "Jordan K. Hubbard" at "Jul 2, 96 02:12:37 am"

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As Jordan K. Hubbard wrote:

> jkh         96/07/02 02:12:37
> 
>   Modified:    release/sysinstall  config.c
>   Log:
>   Add an extra /etc/hosts entry per advice of Joerg.

One should note that this is a workaround for something that looks
like a resolver bug to me.

Several daemons (among them sendmail and httpd) apparently do
something like:

	char hname[VERYLONG], *absname;
	struct hostent *me;

	gethostname(hname, VERYLONG);		/* Get my name. */
	absname = strdup(hname);
	strcat(absname, ".");	/* Force it into the root domain. */
	if ((me = gethostbyname(absname)) == 0) {
		complain("Myname (%s) does not exist.", hname);
		bailout();
	}

This works fine as long as DNS is in effect.  If however /etc/hosts is
queried to resolve myname, this fails if there's no entry available
_with_ the trailing dot.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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