Date: Sat, 07 Apr 2007 17:17:35 +0200 From: Christian Brueffer <brueffer@FreeBSD.org> To: Andrew Pantyukhin <infofarmer@FreeBSD.org> Cc: Pawel Jakub Dawidek <pjd@freebsd.org>, freebsd-arch@freebsd.org Subject: Re: Host ID. Message-ID: <20070407151735.GB1994@haakonia.hitnet.RWTH-Aachen.DE> In-Reply-To: <cb5206420704070808t183dd708v489564d27c0d34dc@mail.gmail.com> References: <20070407120656.GD63916@garage.freebsd.pl> <cb5206420704070607j7afe5349r180151dac1ec3e92@mail.gmail.com> <20070407145154.GG63916@garage.freebsd.pl> <cb5206420704070808t183dd708v489564d27c0d34dc@mail.gmail.com>
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--9zSXsLTf0vkW971A Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 07, 2007 at 07:08:18PM +0400, Andrew Pantyukhin wrote: > On 4/7/07, Pawel Jakub Dawidek <pjd@freebsd.org> wrote: > >On Sat, Apr 07, 2007 at 05:07:25PM +0400, Andrew Pantyukhin wrote: > >> - Is Windows-style hardware ID's hashing totally ruled out? > > > >I know nothing about it... >=20 > Well, maybe something like hashing MAC of the first NIC > to get the initial ID... But then there's always the > probability that we initialize several systems putting > the same NIC into each of them... >=20 > >> - How does it work in other OS'es? (e.g. solaris /bin/hostid) > > > >On OpenSolaris, if I understand the code right, hostid is derived from > >hw_serial, and hw_serial is taken from: > > > > * On sparc machines, read hw_serial from the firmware at boot time > > * and simply assert Sun is the hardware provider. Hmm. > >[...] > > * On x86 machines, read hw_serial, hw_provider and srpc_domain from > > * /etc/bootrc at boot time. >=20 > There's even a business [1] selling software to change > Solaris hostid for =A349. Should I squat freebsdhostid.com? :) >=20 > [1] http://www.solarishostid.com/ >=20 > Anyway, other systems also have a notion of hostid. It > appears from this linux manpage that hostid was there > in 4.2BSD, but got removed in 4.4BSD: >=20 > http://www.die.net/doc/linux/man/man2/gethostid.2.html Indeed, our gethostid(4) manpage says the same ;-) - Christian --=20 Christian Brueffer chris@unixpages.org brueffer@FreeBSD.org GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D --9zSXsLTf0vkW971A Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFGF7YPbHYXjKDtmC0RAt6IAJ94oKRONhwHjTperY855rg8qCbMpgCgmAy/ GIJT+VLzxZFq7bfZCV6dmRw= =URgN -----END PGP SIGNATURE----- --9zSXsLTf0vkW971A--
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