1
0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-22 11:17:19 +00:00
Commit Graph

301 Commits

Author SHA1 Message Date
Poul-Henning Kamp
6c4a970782 Change the kkey generation cherry-picker to use MD5.
Sponsored by:	DARPA & NAI Labs
2002-10-30 22:13:54 +00:00
Poul-Henning Kamp
d518e53936 Add the remaning part of the new libdisk interaction.
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
2002-10-28 22:43:54 +00:00
Poul-Henning Kamp
89f4551e95 Add support for the new libdisk interaction.
Sponsored by:	DARPA & NAI Labs.
2002-10-28 22:42:20 +00:00
Poul-Henning Kamp
1907a57b5f Fix a bug in the cherry-picker kkey generator routine.
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.
2002-10-28 11:06:58 +00:00
Poul-Henning Kamp
8c847e9020 Add more compatibility junk. 2002-10-28 07:50:47 +00:00
Poul-Henning Kamp
b2758b2f23 Don't truncate on large disks. 2002-10-27 10:17:38 +00:00
Poul-Henning Kamp
077f9aa12e Make geom_mbr.c optional on PC98, use GEOM_MBR option to include it.
Disable check for supposedly magic "IPL1" string for PC98 labels, its
thaumaturgical power is in doubt.
2002-10-26 20:17:59 +00:00
Poul-Henning Kamp
3d5500fc51 Reduce the GEOM verbosity under bootverbose to something more sufferable.
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.
2002-10-25 20:09:45 +00:00
Poul-Henning Kamp
ce225127b9 Add a g_dev_print() function which prints all the /dev entries GEOM
know about.
2002-10-25 18:42:42 +00:00
Poul-Henning Kamp
c03bf4f225 Loose the g_dev_clone() noise. 2002-10-25 17:00:15 +00:00
Poul-Henning Kamp
ed1ebb9691 Use a better test to prevent tasting geom.ctl so we don't screw the
regression tests.
2002-10-24 21:32:49 +00:00
Poul-Henning Kamp
d3eaf40966 Don't taste the first provider, it's /dev/geom.ctl and it's not going
to taste like anything we like anyway.
2002-10-24 19:20:28 +00:00
Poul-Henning Kamp
6adb748875 No need to specify CTLTYPE_INT when we use SYSCTL_INT. 2002-10-20 22:46:50 +00:00
Poul-Henning Kamp
3f12caa180 Now that the sectorsize and mediasize are properties of the provider,
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.
2002-10-20 20:28:24 +00:00
Poul-Henning Kamp
943305f753 The g_id*() functions are not needed in the userland test-suite so
#ifdef _KERNEL them rather than deal with a copyin simulation.

Sponsored by:	DARPA & NAI Labs
2002-10-20 20:08:44 +00:00
Poul-Henning Kamp
48444d6262 Make the sectorsize a property of providers so we can include it in the XML
output.

Sponsored by:	DARPA & NAI Labs
2002-10-20 19:18:07 +00:00
Poul-Henning Kamp
14ac6812b9 Use %jd instead of %lld now that we have it. 2002-10-20 18:48:12 +00:00
Poul-Henning Kamp
9e2ebaa081 It makes more sense for the fwheads and fwsectors properties to be in
the provider stanza rather than the geom stanza.
2002-10-20 18:46:25 +00:00
Poul-Henning Kamp
8f9628a126 Include fwsectors and gfwheads in the XML output for the disks we know.
Sponsored by:	DARPA & NAI Labs.
2002-10-20 18:09:01 +00:00
Poul-Henning Kamp
87d4861cc5 Be consistent about functions being static.
Spotted by:	FlexeLint
2002-10-20 14:30:28 +00:00
Poul-Henning Kamp
8e91949016 Constify input to the arc4 seed function.
Implement the lockfile hunting in sector zero.

Sponsored by:	DARPA & NAI Labs.
2002-10-20 11:09:58 +00:00
Poul-Henning Kamp
0355b86e33 Don't track bio allocation in debug output.
Sponsored by:	DARPA & NAI Labs.
2002-10-20 08:45:17 +00:00
Poul-Henning Kamp
96b2c14b41 Style(9) and english(9) fixes.
Submitted by:	schweikh
2002-10-20 08:43:56 +00:00
Poul-Henning Kamp
9b232f1493 Make it possible to specify also via geom_t ID in the geom.ctl config ioctl.
Sponsored by:	DARPA & NAI Labs.
2002-10-20 08:42:18 +00:00
Poul-Henning Kamp
b6a185302e Fix a missing initialization. 2002-10-19 17:19:41 +00:00
Poul-Henning Kamp
19b5c7bc4b Add Geom Based Disk Encryption to the tree.
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.
2002-10-19 17:02:17 +00:00
Thomas Moestl
2408cfebf9 The argument to the DIOCGMEDIASIZE ioctl() is an off_t, not an u_int.
Reviewed by:	phk
2002-10-19 15:40:39 +00:00
Poul-Henning Kamp
37e7c03d19 Be consistent and return the NUL at the end of kern.geom.conf{xml,dot}.
Spotted by:	sam
2002-10-17 21:39:06 +00:00
Poul-Henning Kamp
aed99af2a3 NUL terminate sysctl kern.disks 2002-10-17 19:27:02 +00:00
Nate Lawson
02fcfac0ad Return an error if the drive reports heads/sectors that do not make sense.
This fixes a divide by zero in fdisk(8)

Reviewed by:	phk
2002-10-15 21:28:50 +00:00
Poul-Henning Kamp
220aecb807 Constification ? Yes, out that door, row on the left, one patch each.
Sponsored by:	DARPA & NAI Labs
2002-10-15 18:21:53 +00:00
Poul-Henning Kamp
b775674772 Remove a bogus local variable.
Sponsored by:	DARPA & NAI Labs.
2002-10-14 21:22:23 +00:00
Jake Burkholder
60e0e42e3c Moved geom class initialization to SI_SUB_DRIVERS from SI_SUB_PSEUDO.
This fixes mounting root from md(4) which calls disk_create() early.
2002-10-14 20:20:17 +00:00
Poul-Henning Kamp
6b4abfd6eb Implement the GEOMCONFIGGEOM ioctl which can be used to manually create
and configure an instance of a class on a give provider.

Sponsored by:	DARPA & NAI Labs
2002-10-14 10:05:23 +00:00
Poul-Henning Kamp
d0e17c1b91 Add more KASSERTS.
Sponsored by:	DARPA & NAI Labs.
2002-10-14 10:02:24 +00:00
Poul-Henning Kamp
3101ed1b7c Add the outline of the "/dev/geom.ctl" handling code.
Sponsored by:	DARPA & NAI Labs.
2002-10-13 20:33:33 +00:00
Poul-Henning Kamp
e970552d3a Give GEOM modules a chance to specify their own init routine, in case they
have special requirements.

Sponsored by:	DARPA & NAI Labs.
2002-10-13 18:42:35 +00:00
Poul-Henning Kamp
8523987b73 The CAM system has it's own ideas of what locks are to be held by whom.
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
2002-10-11 20:52:44 +00:00
Poul-Henning Kamp
3f521b6022 Add support g_clone_bio() and g_std_done() to spawn multiple children
of a bio and correctly gather status when done.

Sponsored by:	DARPA & NAI Labs.
2002-10-09 07:11:59 +00:00
Poul-Henning Kamp
068088370c For now, don't wait for drives to stop returning EBUSY. There is too
much broken harware around it seems.

Sponsored by:	DARPA & NAI Labs.
2002-10-08 07:03:58 +00:00
Poul-Henning Kamp
b362694c3b Correctly deal with non-DEVBSIZE drives.
Allow BIO_DELETE through too.

This fixes swap-backed md(4) devices.

Sponsored by:   DARPA & NAI Labs.
2002-10-07 07:15:37 +00:00
Poul-Henning Kamp
430e557d3d Put a printf under #ifdef DIAGNOSTIC.
Sponsored by: DARPA & NAI Labs.
2002-10-07 06:57:00 +00:00
Poul-Henning Kamp
adfa3213c7 Copyin and copyout are only possible from a process-native thread,
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
2002-10-07 06:25:26 +00:00
Poul-Henning Kamp
1fc1a1ef2a This patch got lost in my trees: Pass setattr down to device drivers
as well.

Detected by:	scottl
Sponsored by:	DARPA & NAI Labs.
2002-10-05 21:55:31 +00:00
Poul-Henning Kamp
5f79a2e33a Fix argument order mistake when decoding disklabels from on-disk format.
Detected by:	jhay
Sponsored by:	DARPA & NAI Labs.
2002-10-05 18:52:06 +00:00
Poul-Henning Kamp
3bd6561289 NB: This commit does *NOT* make GEOM the default in FreeBSD
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.
2002-10-05 16:35:33 +00:00
Poul-Henning Kamp
2874f1cf36 Properly isolate the locking domains of sysctl from the topology lock
for the sysctls which report the configuration.

Sponsored by:	DARPA & NAI Labs.
2002-10-04 10:38:36 +00:00
Poul-Henning Kamp
0cc3011d52 Implement the "kern.disks" sysctl in GEOM.
This makes "mdconfig -l" work again.

Sponsored by:	DARPA & NAI Labs.
2002-10-04 10:15:26 +00:00
Poul-Henning Kamp
8be2bc5c6f Properly conditionalize a debugging printf.
Sponsored by:	DARPA & NAI Labs.
2002-10-04 10:06:19 +00:00
Poul-Henning Kamp
29c211954b Move GEOM's sysctls under kern.geom.
Sponsored by:	DARPA & NAI Labs.
2002-10-02 07:51:02 +00:00
Poul-Henning Kamp
a4319fd03d Put some failing ioctl related printfs under a suitable debug flag.
Sponsored by:	DARPA & NAI Labs.
2002-10-02 07:48:39 +00:00
Poul-Henning Kamp
0a2ece0481 Use the canonical root:operator 0640 for GEOM disk devices.
Spotted by:	brooks
Sponsored by:	DARPA & NAI Labs.
2002-10-01 19:33:09 +00:00
Poul-Henning Kamp
2fcf0b5c37 Don't restrict device drivers ability to sleep in the ioctl method, this
is actually entirely legal.

Do bio's with ioctls in them in a g_call_me() function.

Sponsored by:	DARPA & NAI Labs
2002-10-01 18:42:32 +00:00
Poul-Henning Kamp
e9a848359b Include <sys/diskmbr.h> instead of <sys/disklabel.h>
Sponsored by:	DARPA & NAI Labs.
2002-10-01 14:05:06 +00:00
Poul-Henning Kamp
3a24c28f37 Don the asbestos underwear and add the code which lets DIOCWDINFO
write modified disklabels back to disk.

Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:59:59 +00:00
Poul-Henning Kamp
72840432e0 Retire g_io_fail() and let g_io_deliver() take an error argument instead.
Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:54:46 +00:00
Poul-Henning Kamp
90b1cd5615 Introduce g_write_data() function.
Sponsored by:	DARPA & NAI Labs
2002-09-30 08:50:47 +00:00
Poul-Henning Kamp
5b3317e9e6 Add missing g_enc_le2().
Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:47:46 +00:00
Poul-Henning Kamp
5dcf28b202 Disable the g_sanity() check unless people ask for it in the debugflags.
Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:46:29 +00:00
Poul-Henning Kamp
cd4f50fbb8 Make sure we don't loose our topology lock in a call_me() handler.
Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:27:29 +00:00
Poul-Henning Kamp
079a527a3d Zero the local-variable mutexes before we call mtx_init() on them,
failing to do this may lead mtx_init() to belive they have already
been initialized.

Detected by:	Marc Recht <marc@informatik.uni-bremen.de>
2002-09-28 19:38:29 +00:00
Poul-Henning Kamp
4ae677009e Style, whitespace and lint fixes.
Sponsored by:	DARPA & NAI Labs.
2002-09-28 11:57:20 +00:00
Poul-Henning Kamp
eadf0ffdce Void functions cannot use return(foo) even if foo is also returning void.
Sponsored by:	DARPA & NAI Labs.
2002-09-28 11:43:20 +00:00
Poul-Henning Kamp
852f392456 First confirmed kill from my Flexelint license: Check return value
of g_clone_bio().

Detected by:	http://www.gimpel.com/html/flex.htm
Sponsored by:	DARPA & NAI Labs.
2002-09-28 08:16:50 +00:00
Poul-Henning Kamp
3d3816e633 Extensively rework the geom_bsd method, put a lot of comments in, betting
that this will make people use this for their future copy&paste operations.

Rework the detection of raw-disk offsets in disklabels.  This actually
unearthed a number of bugs in the (now) previous version.

Also accept labels which don't have a magic RAW_PART, provided they don't
confuse us too much.

Change the order of our sanity-checks on labels found on disks to be more
robust.

Check against MAXPARTITIONS in our sanity-check and reject disklabels
we cannot cope with.

Create new g_bsd_modify() function to implment disklabel modifying
ioctls.

Implement DIOCSDINFO and DIOCWDINFO with the provision that the latter
still not writes your change back to disk.  I didn't have the nerves
for that yet.

In the start routine, use g_call_me() for complex ioctls to prevent
sleeping.

Sponsored by:   DARPA & NAI Labs.
2002-09-27 21:54:37 +00:00
Poul-Henning Kamp
5a6baf5457 Add the new g_slice_config() call, which can add/delete/change a slice,
with support for trying, doing and forcing.

This will eventually replace g_slice_addslice() which gets changed from
grabbing topology to requing it in this commit as well.

Sponsored by:   DARPA & NAI Labs.
2002-09-27 21:37:11 +00:00
Poul-Henning Kamp
b1937dd1ca Make the UP/DOWN threads hold on to their own private mutex while doing
work.

This prevents people from sleeping in the UP/DOWN I/O path by mistake
or design (doing so almost invariably result in deadlocks since it
stalls all I/O processing in the given direction.

Sponsored by:   DARPA & NAI Labs.
2002-09-27 21:24:40 +00:00
Poul-Henning Kamp
8ac8480b86 Correctly en/decode MAXPARTITIONS partitions.
Sponsored by:	DARPA & NAI Labs.
2002-09-27 21:19:47 +00:00
Poul-Henning Kamp
d4c4a6f165 Setattr should not retry on EBUSY, we could get EBUSY back because
a disklabel modification tries to change an open device, and no
counter-examples exists.

Be less facist about when we can do Setattr, the openmodes of devices
are so loosely managed that the "exclusive" count is almost useless.

Sponsored by:   DARPA & NAI Labs.
2002-09-27 21:12:47 +00:00
Poul-Henning Kamp
9169e8004d Various no-ops:
Add a __unused.

Make the 2byte decoder functions return 16 bits for the benefits
of picky lints.

No need to grab giant around a tsleep() when we have a timeout.

Sponsored by:	DARPA & NAI Labs.
2002-09-27 21:05:05 +00:00
Poul-Henning Kamp
f3bbbfe2df Correctly calculate size of PC98 slices.
Sponsored by:	DARPA & NAI Labs.
2002-09-27 20:56:21 +00:00
Poul-Henning Kamp
a1bd3ee20c Allocate bio's with M_NOWAIT and let the caller deal with the problems.
Sponsored by:	DARPA & NAI Labs.
2002-09-27 20:53:47 +00:00
Poul-Henning Kamp
beece77a2d Add checks for g_clone_bio() returning NULL, it will be possible RSN.
Sponsored by:	DARPA & NAI Labs.
2002-09-27 20:47:23 +00:00
Poul-Henning Kamp
346cd5fe2d Implement g_call_me() as a way for geom methods to schedule operations
to be performed in the event-thread.

To do this, we need to lock the eventlist with g_eventlock (nee g_doorlock),
since g_call_me() being called from the UP/DOWN paths will not be able to
aquire g_topology_lock.

This also means that for now these events are not referenced on any
particular consumer/provider/geom.

For UP/DOWN path use, this will not become a problem since the access()
function will make sure we drain any bio's before we dismantle.

Sponsored by:   DARPA & NAI Labs.
2002-09-27 20:38:36 +00:00
Poul-Henning Kamp
e615b0fd93 Ok, include also the two tests which actually does effect the claims
of the last commit message.

Sponsored by:	DARPA & NAI Labs.
2002-09-27 20:30:27 +00:00
Poul-Henning Kamp
ed0ff8e52d Hook into the shutdown EVENTHANDLER and stop tasting things after we
get notified to make things settle a bit faster.

Sponsored by:	DARPA & NAI Labs.
2002-09-27 20:23:35 +00:00
Poul-Henning Kamp
903e43fe66 Rename the doorlock to eventlock, it gets to protect a bit more in the future.
Sponsored by:	DARPA & NAI Labs.
2002-09-27 20:18:16 +00:00
Jeff Roberson
37ab0e0d81 - Use vrefcnt() instead of v_usecount. 2002-09-25 02:42:43 +00:00
Poul-Henning Kamp
7812d86f03 (This commit touches about 15 disk device drivers in a very consistent
and predictable way, and I apologize if I have gotten it wrong anywhere,
getting prior review on a patch like this is not feasible, considering
the number of people involved and hardware availability etc.)

If struct disklabel is the messenger: kill the messenger.

Inside struct disk we had a struct disklabel which disk drivers used to
communicate certain metrics to the disklayer above (GEOM or the disk
mini-layer).  This commit changes this communication to use four
explicit fields instead.

Amongst the benefits is that the fields do not get overwritten by
wrong or bogus on-disk disklabels.

Once that is clear, <sys/disk.h> which is included in the drivers
no longer need to pull <sys/disklabel.h> and <sys/diskslice.h> in,
the few places that needs them, have gotten explicit #includes for
them.

The disklabel inside struct disk is now only for internal use in
the disk mini-layer, so instead of embedding it, we malloc it as
we need it.

This concludes (modulus any mistakes) the series of disklabel related
commits.

I belive it all amounts to a NOP for all the rest of you :-)

Sponsored by:   DARPA & NAI Labs.
2002-09-20 19:36:05 +00:00
Poul-Henning Kamp
af820f158f Remove unneeded #include <sys/disklabel.h>
Sponsored by:	DARPA & NAI Labs.
2002-09-20 17:00:24 +00:00
Poul-Henning Kamp
46714777f5 Retire now unused DIOCGDVIRGIN kludge.
Sponsored by:	DARPA & NAI Labs.
2002-09-20 09:31:14 +00:00
Poul-Henning Kamp
c51f3753df "Fix" printf format issues by using %j
Sponsored by:	DARPA & NAI Labs.
2002-09-13 11:41:25 +00:00
Poul-Henning Kamp
53706245bb Use biowait() rather than DIY.
Sponsored by:	DARPA & NAI Labs
2002-09-13 11:39:11 +00:00
Poul-Henning Kamp
85b62edb84 Add a couple more of the big/little-endian conversion routines and make
them visible from userland, if need be.

I wish that the C language contained this as part of struct definintions,
but failing that, I would settle for an agreed upon set of functions for
packing/unpacking integers in various sizes from byte-streams which may
have unfriendly alignment.

This really belongs in <sys/endian.h> I guess.
2002-09-13 10:33:10 +00:00
Maxime Henrion
2dfbcdd46d Fix another two printf() format errors which weren't warned
about because the bio_blknos were bogusly casted to long long.
2002-09-13 09:37:44 +00:00
Maxime Henrion
92faa7b50f Fix another printf() format error which wasn't warned about
because the bio_blkno was bogusly casted to an int.
2002-09-13 09:19:55 +00:00
Maxime Henrion
f368af933d Fix a printf() format error on 64 bits architectures.
Also fix some style bugs on the same line.
2002-09-13 09:16:06 +00:00
Poul-Henning Kamp
fbbdde85f8 Deal with a new exteded MBR paritition type
Submitted by:	Michal Mertl <mime@traveller.cz>
2002-09-08 15:13:33 +00:00
Poul-Henning Kamp
4fbd12689a Remove "magicspace". It looks good on paper, it doesn't work in practice.
Sponsored by: DARPA & NAI Labs.
2002-09-06 08:50:28 +00:00
Poul-Henning Kamp
02945fefb7 Don't respect the O_EXCL flag, we don't get it back on close so we cannot
correctly track it.

Spotted by:	peter
Sponsored by:	DARPA & NAI Labs.
2002-09-06 07:57:29 +00:00
Marcel Moolenaar
c2926e2329 Use 'p' as the partition specifier instead of 's'. We continue to use
's' for compatibility partitions (ie partitions with a BSD disklabel).
Partition numbers continue to start with 1.
Example /etc/fstab:
	# Device        Mountpoint      FStype          Options	...
	/dev/da0p1      /efi            msdos           rw	...
	/dev/da0p2      /               ufs             rw	...
	/dev/da0p3      none            swap            sw	...
2002-08-24 22:42:16 +00:00
Julian Elischer
f04af82768 Don't use the static thread.. it is going away. 2002-06-29 07:47:20 +00:00
Poul-Henning Kamp
77f6a083fc Add two new submodes to the AES encryption method.
This method is now suitable for encrypting swap spaces.

Sponsored by:	DARPA & NAI Labs.
2002-06-28 21:25:15 +00:00
Poul-Henning Kamp
11b2dcdbbe Put geom_gpt.c under the GEOM option instead of having a special GEOM_GPT
option for it.
2002-06-10 18:49:41 +00:00
Poul-Henning Kamp
503abe4540 Improve some on the naming.
Submitted by:	iedowse
2002-06-09 10:57:34 +00:00
Poul-Henning Kamp
678735da39 Change the registration of magic spaces so it does its own memory management.
Sponsored by: DARPA & NAI Labs.
2002-06-05 20:30:36 +00:00
Marcel Moolenaar
fd8706be29 Add compile time asserts for the size of struct gpt_hdr and struct
gpt_ent. Use offsetof() for struct gpt_hdr to exclude padding.
2002-05-30 06:33:07 +00:00
Poul-Henning Kamp
f4258597dc Add one copy of crc32() and crc32_tab[] in libkern, and remove it two other
places.

Comment out crc32 related definitions in zlib.h, we don't seem to have the
corresponding code in our kernel.
2002-05-29 20:24:09 +00:00
Marcel Moolenaar
bcd46c600a Add support to GEOM for GUID Partition Tables (GPTs). The support
is currently conditional on both the GEOM and GEOM_GPT options to
avoid getting GPT by default and having the MBR and GPT classes
clash.
The correct behaviour of the MBR class would be to back-off (reject)
a MBR if it's a Protective MBR (a MBR with a single partition of type
0xEE that spans the whole disk (as far as the MBR is concerned).
The correct behaviour if the GPT class would be to back-off (reject)
a GPT if there's a MBR that's not a Protective MBR.

At this stage it's inconvenient to destroy a good MBR when working
with GPTs that it's more convenient to have the MBR class back-off
when it detects the GPT signature on disk and have the GPT class
ignore the MBR.

In sys/gpt.h UUIDs (GUIDs) for the following FreeBSD partitions
have been defined:

GPT_ENT_TYPE_FREEBSD
	FreeBSD slice with disklabel. This is the equivalent of
	the well-known FreeBSD MBR partition type.
GPT_ENT_TYPE_FREEBSD_{SWAP|UFS|UFS2|VINUM}
	FreeBSD partitions in the context of disklabel. This is
	speculating on the idea to use the GPT to hold partitions
	instead if slices and removing the fixed (and low) limits
	we have on the number of partitions.

This commit lacks a GPT image for the regression suite.
2002-05-28 09:04:48 +00:00
Poul-Henning Kamp
291daf5735 Add a proof-of-concept encryption class.
"The only hard problem in cryptography is key-management."

All sectors are encrypted with AES in CBC mode using a constant key,
currently compiled in and all zero.

To activate this module, write the magic header on the partition:

	echo "<<FreeBSD-GEOM-AES>>" | dd conv=sync of=/dev/md98

The encrypted device will be one sector shorter and have ".aes"
appended to its name.

Sponsored by: DARPA & NAI Labs.
2002-05-26 18:14:38 +00:00