Make sure sector zero is protected if it contains metadata.
Lower WARNS for gbde to 3 on non-i386 archs. rijndael-fst is evil
but appearntly does the right thing and passes the test-vectors.
MFC Candidate.
for request sizes larger than the sectorsize or for multi-key setups.
See warning mailed to current@ for details of recovery.
Found by: Marcus Reid <marcus@blazingdot.com>
This mostly consists of functionality to serialize accesses to
the two ATA channels (which can also be used to "fix" certain
PCI based controllers).
Add support for Acard controllers.
Enable the ATA driver in PC98 GENERIC, and add device hints.
Update man page with latest support.
The PC98 core team has kindly provided me with a PC98
machine that made this all possible, thanks to all that
contributed to that effort, without that this would
probably newer have been possible..
Approved by: re@
are the output of AES/128/CBC or ARC4RANDOM. Encrypt the random data with which
we wipe when we get a BIO_DELETE to make such an algorithm useful.
Sponsored by: DARPA & NAI Labs
Approved by: re (blanket)
Replace ARC4 with SHA2-512.
Change lock-structure encoding to use random ordering rather for obscurity.
Encrypt lock-structure with AES/256 instead of AES/128.
Change kkey derivation to be MD5 hash based.
Watch for malloc(M_NOWAIT) failures and ditch our cache when they happen.
Remove clause 3 of the license with NAI Labs consent.
Many thanks to "Lucky Green" <shamrock@cypherpunks.to> and "David
Wagner" <daw@cs.berkeley.edu>, for code reading, inputs and
suggestions.
This code has still not been stared at for 10 years by a gang of
hard-core cryptographers. Discretion advised.
NB: These changes result in the on-disk format changing: dump/restore needed.
Sponsored by: DARPA & NAI Labs.
skip those. This handles the Protective MBR (PMBR) which consists
of a single partition of type 0xEE that covers the whole disk and
as such protects the GPT partitioning. We allow other partitions to
be present besides partitions of type 0xEE and as such interpret
partition type 0xEE as a "hands-off" partition only.
While here, fix g_mbrext_dumpconf to test if indent is NULL and
dump the data in a form that libdisk can grok. Change the logic
in g_mbr_dumpconf to match that of g_mbrext_dumpconf. This does
not change the output, but prevents a NULL-pointer dereference
when indent == NULL && pp == NULL.
expected under -current. This is a problem for GEOM because the up/down
threads cannot sleep waiting for memory to become free. The reason they
cannot sleep is that paging things out to disk may be the only way we can
clear up some RAM. Nice catch-22 there.
Implement a rudimentary ENOMEM recovery strategy: If an I/O request
fails with an error code of ENOMEM, schedule it for a retry, and
tell the down-thread to sleep hz/10 to get other parts of the system
a chance to free up some memory, in particular the up-path in GEOM.
All caches should probably start to monitor malloc(9) failures using the new
malloc_last_fail() function, and release when it indicates congestion.
Sponsored by: DARPA & NAI Labs.
WARNING: This is not a published interface, it is a stopgap measure for
WARNING: libdisk so we can get 5.0-R out of the door.
Sponsored by: DARPA & NAI Labs
WARNING: You need to backup and restore the _unencrypted_ contents
WARNING: of your GBDE disks when you take this update!
Sponsored by: DARPA & NAI Labs.
This is not quite the set of information I would want, but the tree where
I have the "correct" version is messed up with conflicts.
Sponsored by: DARPA & NAI Labs.
don't take the detour over the I/O path to discover them using getattr(),
we can just pick them out directly.
Do note though, that for now they are only valid after the first open
of the underlying disk device due compatibility with the old disk_create()
API. This will change in the future so they will always be valid.
Sponsored by: DARPA & NAI Labs.
This is an encryption module designed for to secure denial of access
to the contents of "cold disks" with or without destruction activation.
Major features:
* Based on AES, MD5 and ARC4 algorithms.
* Four cryptographic barriers:
1) Pass-phrase encrypts the master key.
2) Pass-phrase + Lock data locates master key.
3) 128 bit key derived from 2048 bit master key protects sector key.
3) 128 bit random single-use sector keys protect data payload.
* Up to four different changeable pass-phrases.
* Blackening feature for provable destruction of master key material.
* Isotropic disk contents offers no information about sector contents.
* Configurable destination sector range allows steganographic deployment.
This commit adds the kernel part, separate commits will follow for the
userland utility and documentation.
This software was developed for the FreeBSD Project by Poul-Henning Kamp and
NAI Labs, the Security Research Division of Network Associates, Inc. under
DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
research program.
Many thanks to Robert Watson, CBOSS Principal Investigator for making this
possible.
Sponsored by: DARPA & NAI Labs.
So do GEOM. Not a pretty sight.
Take all the interesting stuff out of GEOM::disk_create(), and leave just
the creation of the fake dev_t. Schedule the topology munging to happen
in the g_event thread with g_call_me().
This makes disk_create() pretty lock-agnostic, almost lock-atheist.
Tripped over by: peter
Sponsored by: DARPA & NAI Labs
and therefore we need a way for ioctl handlers to run in that thread
in GEOM. Rather than invent a complicated registration system to
recognize which ioctl handler to use for a given ioctl, we still
schedule all ioctls down the tree as bio transactions but add a
special return code that means "call me directly" and have the
geom_dev layer do that.
Use this for all ioctls that make it as far as a diskdriver to
avoid any backwards compatibility problems.
Requested by: scottl
Sponsored by: DARPA & NAI Labs
NB: But it will enable it in all kernels not having options "NO_GEOM"
Put the GEOM related options into the intended order.
Add "options NO_GEOM" to all kernel configs apart from NOTES.
In some order of controlled fashion, the NO_GEOM options will be
removed, architecture by architecture in the coming days.
There are currently three known issues which may force people to
need the NO_GEOM option:
boot0cfg/fdisk:
Tries to update the MBR while it is being used to control
slices. GEOM does not allow this as a direct operation.
SCSI floppy drives:
Appearantly the scsi-da driver return "EBUSY" if no media
is inserted. This is wrong, it should return ENXIO.
PC98:
It is unclear if GEOM correctly recognizes all variants of
PC98 disklabels. (Help Wanted! I have neither docs nor HW)
These issues are all being worked.
Sponsored by: DARPA & NAI Labs.
