- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

- Don't pass geom and provider names as format strings.
- Add __printflike() attributes.
- Remove an extra argument for the g_new_geomf() call in swapongeom_ev().

Reviewed by: pjd

Avoid to check the same cache line/variable from all the locking
primitives by breaking stop_scheduler into a per-thread variable.
Also, store the new td_stopsched very close to td_*locks members as
they will be accessed mostly in the same codepaths as td_stopsched and
this results in avoiding a further cache-line pollution, possibly.

STOP_SCHEDULER() was pondered to use a new 'thread' argument, in order to
take advantage of already cached curthread, but in the end there should
not really be a performance benefit, while introducing a KPI breakage.

In collabouration with: flo
Reviewed by: avg
MFC after: 3 months (or never)
X-MFC: r228424

Add some FEATURE macros for various GEOM classes.

No FreeBSD version bump, the userland application to query the features will
be committed last and can serve as an indication of the availablility if
needed.

Sponsored by: Google Summer of Code 2010
Submitted by: kibab
Reviewed by: silence on geom@ during 2 weeks
X-MFC after: to be determined in last commit with code from this project

Don't pass error value pointer to g_read_data(9) at all if we don't
have any use of it.

Suggested by: pjd

Check for g_read_data(9) errors properly:

o The only indication of error condition is NULL value returned by
the function;

o value pointed to by error argument is undefined in the case when
operation completes successfully.

Discussed with: phk

Implement a gctl handler and the verb "write MBR" which can be used to
update metadata and bootcode while the MBR is in use.

MFC candidate

Do not attach MBR on top of an MBR. This removes some confusing
slice names on disks with extended partitions.

Spotted on: Mother-in-laws computer.

Protect against recursive slices creation in simlar way as it is done
in BSD class, ie. if provider below us uses the same metadata, don't
create slices based on the metadata.
This allows to create slices on geoms with rank != 1 without hacks.

Discussed with: phk
Approved by: phk
MFC after: 2 weeks

Pass the file->flags down to geom ioctl handlers.

Reject certain ioctls if write permission is not indicated.

Bump geom API version.

Reported by: Ruben de Groot <mail25@bzerk.org>

Fix a long standing bug in geom_mbr which is only now exposed by the
correct open/close behaviour of filesystems:

When an ioctl to modify the MBR arrives, we cannot take for granted that
we have the consumer open.

The symptom is that one cannot run 'boot0cfg -s2 /dev/ad0' in single-user
mode because / is the only open partition in only open r1w0e1.

If it is not, we attempt to increase the write count by one and
decrease it again afterwards.

Presumably most if not all other slices suffer from the same problem.

Stop dumping the MBR entries under bootverbose

Tag all geom classes in the tree with a version number.

Use default method initialization on geoms.

Allow slice creation on providers from MIRROR class.
This should allow mounting root file system from a mirror.

Allow to create slices on providers from class LABEL and class NOP.
This is really ugly way to do this, but there is no other way for now.
It allows to mount root file system from providers which belong to
those classes.

Approved by: phk

Remove the absolute count g_access_abs() function since experience has
shown that it is not useful.

Rename the relative count g_access_rel() function to g_access(), only
the name has changed.

Change all g_access_rel() calls in our CVS tree to call g_access() instead.

Add an #ifndef BURN_BRIDGES #define of g_access_rel() for source
code compatibility.

Simplify the ioctl handling in GEOM.

This replaces the current ioctl processing with a direct call path
from geom_dev() where the ioctl arrives (from SPECFS) to any directly
connected GEOM class.

The inverse of the above is no longer supported. This is the
situation were you have one or more intervening GEOM classes, for
instance a BSDlabel on top of a MBR or PC98. If you want to issue
MBR or PC98 specific ioctls, you will need to issue them on a MBR
or PC98 providers.

This paves the way for inviting CD's, FD's and other special cases
inside GEOM.

Implement DOSPTYP_EXTLBA more completely: loop until we find no more
partitions.

Submitted by: Rudolf Cejka <cejkar@fit.vutbr.cz>
PR: 53719

Use __FBSDID().

Approved by: phk

Remove unused variable.
Remove unneeded return.

Found by: FlexeLint

Remove the G_CLASS_INITIALIZER, we do not need it anymore.

Use g_slice_spoiled().
Free buffer from g_read_data().

Back out all the stuff that didn't belong in the last commit.

Use g_slice_spoiled() rather than g_std_spoiled().

Remember to free the buffer we got from g_read_data().

Rename g_call_me() to g_post_event(), and give it a flag
argument to determine if we can M_WAITOK in malloc.

Time has run from the "run GEOM in userland" harness, and the new regression
test is built to test GEOM as running in the kernel.

This commit is basically "unifdef -D_KERNEL" to remove the mainly #include
related code to support the userland-harness.

Retire the "frontstuff" record keeping, it was no match for the
in-band meta-data of BSD labels and a more complex solution will be needed.

Move the functions for encoding decoding struct dos_partition into
a separate .c file so they can be used from userland as well.

Only be verbose if (bootverbose)

Correctly split cyl/sects bytes when we print them.

Style issue: use do {...} while(0); for multi-exit section.

Retire the DIOCGMBR ioctl before anybody starts to use it.

Update the initializer for GEOM_MBREXT, I overlooked it previously.

Add #define for DOSPTYP_PMBR, and use it.

Use <sys/endian.h> instead of geom_enc.c for endianess-agnostification.

Add handling for cancelled events in the g_call_me() methods.

Change events to have an array of "void *" references, and give the
event posting functions varargs to fill these.

Attribute g_call_me() to appropriate g_geom's where necessary.

Add a flag argument to g_call_me() methods which will be used to signal
cancellation of events in the future.

This commit should be a no-op.

Premptively change initializations of struct g_class to use C99
sparse struct initializations before we extend the struct with
new OAM related member functions.

Wrap a long line.

Remove commented out g_enc_dos_partition(). We won't be needing it.

Don't restrict MBR sectorsize to 512 bytes.

Test data provided by: Andrey Koklin <aka@veco.ru>

Implement ioctls for tampering with sector0.

Don't forget our topology lock in the MBREXT case.

Remember to hold topology lock when we change things.

Spotted by: kuriyama

Get rid of g_slice_addslice() and use g_slice_config() instead.

Tested with: i386 + src/tools/regression/geom

Constification and some s/int/u_int/ changes.

Remove clause 3 in the license with NAI's consent.
Reject slices with type==0.
Diddle the bootverbose printfs.

Sponsored by: DARPA & NAI Labs

Remove the GEOM_GPT hack. We now check for partition type 0xEE and
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.

Spruce up bootverbose output a bit.

Allow extended partitions to have flag=0x80

Add more compatibility junk.

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.

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.

Make the sectorsize a property of providers so we can include it in the XML
output.

Sponsored by: DARPA & NAI Labs

Include <sys/diskmbr.h> instead of <sys/disklabel.h>

Sponsored by: DARPA & NAI Labs.

Style, whitespace and lint fixes.

Sponsored by: DARPA & NAI Labs.

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.

Deal with a new exteded MBR paritition type

Submitted by: Michal Mertl <mime@traveller.cz>

Remove "magicspace". It looks good on paper, it doesn't work in practice.

Sponsored by: DARPA & NAI Labs.

Put geom_gpt.c under the GEOM option instead of having a special GEOM_GPT
option for it.

Improve some on the naming.

Submitted by: iedowse

Change the registration of magic spaces so it does its own memory management.

Sponsored by: DARPA & NAI Labs.

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.

Introduce the concept of "magic spaces", and implement them in most of
the relevant classes.

Some methods may implement various "magic spaces", this is reserved
or magic areas on the disk, set a side for various and sundry purposes.
A good example is the BSD disklabel and boot code on i386 which occupies
a total of four magic spaces: boot1, the disklabel, the padding behind
the disklabel and boot2. The reason we don't simply tell people to
write the appropriate stuff on the underlying device is that (some of)
the magic spaces might be real-time modifiable. It is for instance
possible to change a disklabel while partitions are open, provided
the open partitions do not get trampled in the process.

Sponsored by: DARPA & NAI Labs.

Remove the "-class" suffix from classes, they will not be ambiguous.

Sponsored by: DARPA & NAI Labs.

Implement DIOCGFRONTSTUFF ioctl which reports how many bytes from the start
of the device magic stuff might occupy.

Sponsored by: DARPA & NAI Labs.

Move access and orphan member functions from class to geom.

Sponsored by: DARPA & NAI Labs

In the absense of any smarter way to do this, cast various printf
arguments to silence printf format warnings.

Eliminate some thread pointers which do not make sense anymore.

Split private parts of geom.h into geom_int.h. The latter should
never be included in class implemtations.

Cave in to tradition and rename "methods" to "classes".

Be more systematic about conversion of on-disk formats in a endian/width
agnostic way.

Collapse the MBR and MBREXT methods into one file and make them endian/width
agnostic.

Sponsored by: DARPA & NAI Labs.

First commit of the GEOM subsystem to make it easier for people to
test and play with this.

This is not yet production quality and should be run only on dedicated
test boxes.

For people who want to develop transformations for GEOM there exist a
set of shims to run geom in userland (ask phk@freebsd.org).

Reports of all kinds to: phk@freebsd.org
Please include in report:
dmesg
sysctl debug.geomdot
sysctl debug.geomconf

Known significant limitations:
no kernel dump facility.
ioctls severely restricted.

Sponsored by: DARPA, NAI Labs