* support FreeBSD 6
 * client-side changes to support enable/disable of ACPI via slicefix
 * use dynamically linked Emulab binaries in frisbee MFS (for size)

(from Keith Sklower)

I fixed a couple of minor problems, but mostly this worked fine. Note that
I have tested this with the installed perl, *NOT* perl 5.8. I am just
making sure this stuff gets committed before too much more bitrot sets in.

grotesque dhcp-on-all-interfaces hacks :-)

non-standard installation of client software in the frisbee MFS.

Add client-install target used by cdboot-install.

the case that they didn't give us a hostname.  It just mocks up a
bogus hostname of dhcp-ip.wa.emulab.net and sends that along.
The substantive change is that it now prefers extracting the IP
address from the ifconfig for the interface instead of via hostname,
which is pretty unreliable.  But it'll try both.

from the burned-on-CD register.pl script into the downloaded
netbed-setup.pl script.  Doesn't actually change anything, but
a CD burned with the new register.pl and intended for DHCP could
be fixed by a revised netbed-setup without requiring a new CD.

This is a transition commit to fix some minor brokenness and
inflexibility before I really revamp things to enable DHCP support,
which may require a v5 CD instead of incremental changes to the v4 CD.
We'll see...

a disk image in case the image isn't stored on the boot CD
(needed to handle heterogenous boot CD media).  netbed-setup.pl
now tries this alternate location if the local disk image
is missing, old, or corrupt.

we can use it for a partition number

1. tbbootconfig: ensure block is zeroed on first init, fix cut/paste error
2. rc.frisbee: cleanup interface to slicefix
3. slicefix: cleanup, make it work correctly, init tbboot block for cd boot

Unrelated:
1. link-agent makefile: build link-agent when doing client-install

the CDROM to read/write the magic config sector.

my windoze box cause my CD didn't work for some reason, but now it
does.

I was getting the IP from the hostname, so I switched to the trick
we use on the testbed nodes; use /etc/dhclient-exit-hooks to write
the data into /var/run, and use that in register.sh when the IP=DHCP.

Also fix bug in "info" mode, that was causing it to be less than
informative.

a vastly stripped down version of the netbed cdrom version, but which
also asks for a root password.

all files (fdisk, slice images, tarballs) to proper digital signatures
using the new priv/pub key pair recently installed (and the mksig
script). The key pair is password protected, so it is not as
convenient as an MD5, but such is life. The sig files are either
stored locally on the CD, or can be specifed as an https:// URL to be
downloaded with wget and verified using the public key stored on the
CD in /etc/emulab_pubkey.pem.

This version of the script is not compatible with older CDs (version 3
or earlier). The web interface will return the proper version to the
requester based on its CD version (from boss:/z/testbed/distributions).
The old version is stored as netbed-setup-v3.pl, while the new version
is stored as netbed-setup-v4.pl. These names are relevant to the web
interface (cdromcheckin.php3), but are otherwise arbitrary (they can
be anything). Note that version 1 and 2 CDs do not download a script
(hardwired on the CD).

to a proper digital signature using the new priv/pub key pair recently
installed (and the mksig script). The key pair is password protected,
so it is not as convenient as an MD5, but such is life. The sig is
returned as an https:// URL to be downloaded with wget and verified
using the public key stored on the CD in /etc/emulab_pubkey.pem.

Dave and RON node installation.

  script. The old script is just a wrapper that asks the page for the
  real script, which is run on the node. We return a url and md5 in
  the response, which the node then gets with wget. Right now the md5
  and the url are hardwired in the page, and the script goes in
  /z/testbed/distributions on boss. Needs to be DB loaded instead. The
  node will wait forever until it can get the script. ^C on the
  console will drop the node into a shell if the user knows the root
  password.

  Security is flimsy still; we depend on the ssl connection to ensure
  that the script is really coming from emulab. Should probably sign
  the script.

path in resolv.conf to check 127.0.0.0 first. This was requested by
Dave. Note that instead of running make-localhost I just spit out a
noce looking zone file.

the privkey in that file. Requested by Dave so that his RON nodes
would not require any human intervention.
Also add nosuid option to slicex mount line in fstab.

or otherwise disturb things.

emulabboot.sh: make sure tbbootconfig is executable
rc.emulab: fix exit code
register.sh: pass netbed_IP on to register.pl
waipconfig.pl:
	fix exit code
	attempt to intuit gateway: (addr & mask) | 1
	code to set netmask based on network type, but for now stick with
		common 255.255.255.0
	more exotic code for determining disk (grubs through dmesg output
		looking for disks, checks sizes to make sure they are
		big enough)
register.pl:
	use IP address passed in rather than trying to resolve from hostname
	check hash of on CD image (we may want to disable this, takes a
		long time)
	get rid of hack when calling tbbootconfig since it is now fixed

	take debug option out of imageunzip from cd (dooh!)
	call shutdown instead of reboot on CD system,
	   prevents long hangs due to unflushable buffers
	add stop option to register.sh so it doesn't whine during shutdown