Date: Mon, 3 Oct 2005 11:03:44 -0700 From: Brooks Davis <brooks@one-eyed-alien.net> To: Ceri Davies <ceri@submonkey.net>, Brooks Davis <brooks@one-eyed-alien.net>, arch@freebsd.org Subject: Re: error in trimdomain(3) Message-ID: <20051003180344.GA31888@odin.ac.hmc.edu> In-Reply-To: <20051003103124.GB56760@submonkey.net> References: <20051001093550.GA32354@odin.ac.hmc.edu> <20051003103124.GB56760@submonkey.net>
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--AhhlLboLdkugWU4S Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Oct 03, 2005 at 11:31:24AM +0100, Ceri Davies wrote: > On Sat, Oct 01, 2005 at 02:35:50AM -0700, Brooks Davis wrote: > > I discovered today that the trimdomain() implementation in libutil devi= ates > > slightly from the manpage. The manpage says: > >=20 > > The function trimdomain() removes the current domain name from the= passed > > fullhost name by writing a NUL character over the first period of = the > > ^^^^^^^^^^^^ > > passed name. The current domain name is determined by calling > > gethostname(3) and removing everything up to the first period. > >=20 > > which clearly indicates that trimdomain() should return either the > > unmodified string or a host name with no domain. In reality it will > > remove the domain name even if the result is not a host name. This > > means that if the host b.com calls trimdomain with "a.b.com" as the > > input string, the result is "a.b". >=20 > That's actually what the excerpt above says will happen. >=20 > gethostname returns "b.com", removing everything up to the first period > yields ".com", and that removed from "a.b.com" gives you "a.b". >=20 > I don't care if it needs to be changed, but that does exactly what it > says on the tin so far as I can see. There are two refrences to "first period". You are correct that the domain name of b.com is .com, but the refrence I highlighted states that the only allowable modification to the host name is writing a NUL to the first period in the string (it's actually messier than this because trimdomain also supports X11 DISPLAY strings and thus does a memmove and reterminates if there is a :0 or :0.0 type string after domain.) -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --AhhlLboLdkugWU4S Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFDQXJ/XY6L6fI4GtQRAmYjAKCIey3y5h+rQE4o748OBjdgP0W07ACeKnRu d2CQjPwEVv5sKBTedxVIYsY= =IxmP -----END PGP SIGNATURE----- --AhhlLboLdkugWU4S--
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