Date: Mon, 11 Mar 2019 14:12:52 -0400 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net> Cc: Mark Raynsford <list+org.freebsd.virtualization@io7m.com>, freebsd-virtualization@freebsd.org Subject: Re: bhyve: Detecting that a guest kernel has booted Message-ID: <20190311181252.4xrwzfidzfhsad46@mutt-hbsd> In-Reply-To: <5c86a44e.1c69fb81.cd645.9e28SMTPIN_ADDED_BROKEN@mx.google.com> References: <20190311180359.knal2sjbmxlgzduh@mutt-hbsd> <5c86a44e.1c69fb81.cd645.9e28SMTPIN_ADDED_BROKEN@mx.google.com>
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--ulmgg6hb4u5r6frw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Mar 11, 2019 at 11:09:07AM -0700, Rodney W. Grimes wrote: > > On Mon, Mar 11, 2019 at 10:58:55AM -0700, Rodney W. Grimes wrote: > > > -- Start of PGP signed section. > > > > On 2019-03-11T13:08:53 -0400 > > > > Shawn Webb <shawn.webb@hardenedbsd.org> wrote: > > > > > > > > > > If your guest OS supports it, you could probably write two script= s that > > > > > uses virtio_console(4), one for the guest to tell the host "HELLO= " and > > > > > one for the host to say "NICE TO SEE YOU!" once the guest's "HELL= O" is > > > > > received. > > > > >=20 > > > >=20 > > > > They're a mix of FreeBSD, OpenBSD, and Debian guests. So I'm guessi= ng > > > > one out of three of those supports it... > > > >=20 > > > > I suppose my other option would be to add (another) NFS mount in ea= ch > > > > guest, and have them touch a file early in the init script (and > > > > possibly touch a different file early in the shutdown script). > > >=20 > > > Well ICMP is in the kernel, and should be working as soon as the > > > interface is up, long before you could do anything with NFS, > > > so rather than the complexity above a simple ping would suffice. > >=20 > > Just a note: Windows systems disable inbound ICMP by default, but > > inbound ICMP support can be enabled post-installation. > >=20 > > > There is also the phase of vmm(8) startup that when you are > > > running bhyveload vs bhyve and iirc grubload vs bhyve, that > > > can be detected. vmbhyve does so and says you are in state > > > looader when you do a vm list. > >=20 > > I would suggest using bhyve with UEFI. I wish a death upon bhyveload > > and grub2-bhyve. >=20 > I have no love for them either, but until we get our UEFI updated > it is a rather sad state of affairs. If we could a) get on a modern > version of ed2k, and b) bet the CSM fixed so that we could actually > boot bios mode stuff with it and c) maybe make a port of seabios > that could be used then we would be kicking some seriuos stuff! If I'm able to run an internship this year like I did last year, I might have my interns update our UEFI firmware to the latest release and/or make a BSDL seabios port. My employer was recently acquired, so I'm likely not going to run an internship this year. Thanks, --=20 Shawn Webb Cofounder and Security Engineer HardenedBSD Tor-ified Signal: +1 443-546-8752 Tor+XMPP+OTR: lattera@is.a.hacker.sx GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE --ulmgg6hb4u5r6frw Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEKrq2ve9q9Ia+iT2eaoRlj1JFbu4FAlyGpSQACgkQaoRlj1JF bu6A/Q/+M0VcP/eKL9RYHZZwkMDqOookRMXoiDnyBulxDZoAPa61KPdeMOcMZ+Yk MtL+l48+xj0JDZparXQZCYsQXPwrIJWbKvu/MZqk303ZeuKMD82SJDLs3709NKx7 bg461K155d6ElT2JZaRZxQ03JoIe+P6d5+hp23QHnjw18j9NK7zJhfX6b2HnxTEP P96n88jhGwAf3cuWykN7JqksrKF8cqm9ntJSPlAiEyma5wFQdeu9IrR05KXVjoc2 yXSJPd5lGdR/Qmdzkioaw4kObN9SFO4QlNKw5A6FsQnU2iBqu39SBx9ULw4fcqqQ ba6loxnU0b+ySVRX1kJyxhLZRiohA3TK5LAncj6M5TNiKObuxU0nGyKaWrZWxwHG aQxTkU3cD/FZnNIcvNta6uskgAVVJTBBcnkQLwJFd6DkvxYU549Esmtvnvx9tk2s UkossC3jzhda9LjMXGkmPwnC9RuzzVOrsw66Q1N+L2Y+Z7xPXz280FHZxjogBcEq 8BCaaQNoHbF4raqoEUw5v619lcNlx0KnoVY6GRf+d5WsVA6zDavpyHLJ7oc5BKmH /e5zxyvJdsNwjTljdPdLtSFC9b1agoFtsahK/HGO7tShoYIsuFHw4uO4fYSpyv1y VlZz3YONIhDgZPooFBBgaNq+Ix34CLL3DfojQvEZYy9+c38yXcA= =TpxC -----END PGP SIGNATURE----- --ulmgg6hb4u5r6frw--
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