Commit Graph

131 Commits

Author SHA1 Message Date
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
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
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
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
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
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
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
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
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
Poul-Henning Kamp
07107de9bc 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.
2002-05-21 20:33:49 +00:00
Poul-Henning Kamp
4b8374a778 Don't grab Giant around malloc(9) and free(9).
Don't grab Giant around wakeup(9).
Don't print verbose messages about each device found in geom_dev.
Various cleanups.

Sponsored by: DARPA & NAI Labs.
2002-05-20 10:03:15 +00:00
Poul-Henning Kamp
078c6f01f9 Make specific provisions for the kernel simulator used in the regression
tests, other userland programs may need to include <geom/geom.h>.

Sponsored by:	DARPA & NAI Labs.
2002-04-24 12:53:12 +00:00
Poul-Henning Kamp
53705e35ae Implement the GEOMGETCONF ioctl which returns vital stats for the
current device in XML in an sbuf.

Sponsored by:	DARPA & NAI Labs
2002-04-23 19:54:02 +00:00
Poul-Henning Kamp
7d590cc46f Introduce some serious paranoia to try to catch a memory overwrite problem
as early as possible.

Sponsored by:	DARPA & NAI Labs
2002-04-23 11:48:45 +00:00
Poul-Henning Kamp
efb9df5cef Protect against multitple #includes of this file. 2002-04-22 19:54:17 +00:00
Poul-Henning Kamp
95c24b31df Make kernel dumps work with GEOM.
Notice that if the device on which the dump is set is destroyed for
any reason, the dump setting is lost.  This in particular will
happen in the case of spoilage.  For instance if you set dump on
ad0s1b and open ad0 for writing, ad0s* will be spoilt and the dump
setting lost.  See geom(4) for more about spoiling.

Sponsored by: DARPA & NAI Labs.
2002-04-19 09:24:12 +00:00
Poul-Henning Kamp
a4ef1c5f92 Introduce the convenience function g_getattr() and make it DWIM.
Sponsored by: DARPA & NAI Labs.
2002-04-09 15:13:42 +00:00
Poul-Henning Kamp
0d3f37a804 Constifixation of attribute argument to g_io_[gs]etattr()
Sponsored by:	DARPA & NAI Labs
2002-04-09 15:12:05 +00:00
Poul-Henning Kamp
2fccec19e9 Centralize EOF handling and improve access controls for bio scheduling.
Sponsored by:	DARPA & NAI Labs
2002-04-04 09:58:20 +00:00
Poul-Henning Kamp
07d77fc610 Move access and orphan member functions from class to geom.
Sponsored by: DARPA & NAI Labs
2002-04-04 09:54:13 +00:00
Poul-Henning Kamp
b1876192f0 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.
2002-03-26 22:07:38 +00:00
Poul-Henning Kamp
e805e8f0e8 Cave in to tradition and rename "methods" to "classes". 2002-03-26 21:40:06 +00:00
Poul-Henning Kamp
3773a65c0b 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.
2002-03-24 11:21:41 +00:00
Poul-Henning Kamp
117bae1fd3 Need a different #include for the userland regression test. 2002-03-17 19:15:28 +00:00
Poul-Henning Kamp
a5b2e75d32 Add a generic and general ioctl pass-through mechanism.
It should now be posible to issue ioctls to SCSI CD drives.
2002-03-16 09:24:19 +00:00
Poul-Henning Kamp
dd84a43c1d 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
2002-03-11 21:42:35 +00:00