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487 Commits

Author SHA1 Message Date
Poul-Henning Kamp
c7f3baedf3 Fix an obscure fencepost error in GBDE's sector mapping code: 
For certain combinations of sectorsize, mediasize and random numbers
(used to define the mapping), a multisector read or write would ignore
some subset of the sectors past the first sector in the request because
those sectors would be mapped past the end of the parent device, and
normal "end of media" truncation would zap that part of the request.

Rev 1.19+1.20 of g_bde_work.c added the check which should have alerted
me to this happening.  This commit maps the request correctly and
adds KASSERTS to make sure things stay inside the parent device.

This does not change the on-disk layout of GBDE, there is no need to
backup/restore.
 2003-04-29 19:46:42 +00:00
Poul-Henning Kamp
a17da2aa74 Typo in last commit: Do not press xZZ to leave vi(1). 2003-04-29 19:38:55 +00:00
Poul-Henning Kamp
ca8f372bbc When a bio comes back from below with a zero error code, check that 
it wrote the full length.  The only case where this should be able
to happen is if we try to read/write past the end and the request
is truncated.  We obviously should never try to do that, so this
code should never activate.
 2003-04-29 19:37:36 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h. 
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
 2003-04-29 13:36:06 +00:00
Poul-Henning Kamp
90336bb4d8 I accidentally leaked this debugging tool in with my last commit. 
Disable it with a direct warning.
 2003-04-28 17:57:12 +00:00
Poul-Henning Kamp
306babd20c Rename g_bde_get_sector() to g_bde_get_keysector() and pick up the 
offset from the work packet.
 2003-04-28 06:38:31 +00:00
Poul-Henning Kamp
11ca41a9bb Only attempt total cache-purge once in case of failure. 2003-04-28 06:19:41 +00:00
Poul-Henning Kamp
035694b29a Better criteria for skipping disk reading BIO_READ work packets. 2003-04-28 06:15:39 +00:00
Poul-Henning Kamp
d8e7c92c9e Explicitly set the sector state to JUNK if we encounter a read-error. 2003-04-28 06:10:35 +00:00
Poul-Henning Kamp
c08c56e02a Bail as soon as the first write request has failed, there is no point 
in trying the second write if the first one went nowhere.
 2003-04-26 21:40:26 +00:00
Poul-Henning Kamp
54d2011343 Appearantly UFS no longer issues BIO_DELETE requests correctly, and 
consequently trashes data.  Disable BIO_DELETE handling in gbde for now.
 2003-04-26 21:39:33 +00:00
Poul-Henning Kamp
9b99e39d61 Do an explicit retry after we have dumped the cache, rather than a 
(potential) tail recursion.
 2003-04-25 21:43:11 +00:00
Poul-Henning Kamp
e8e0742ef4 If on a BIO_READ request, we failed to allocate the bio for reading 
our key-sector, we would end up returning the read without an error,
despite the fact that the data was not correctly decrypted.

This would result in data corruption on read, but intact data still
on the media.
 2003-04-25 21:28:28 +00:00
Poul-Henning Kamp
37f5e4a6c2 Fix a problem and slightly improve the ENOMEM handling: 
Give up the entire bio as soon as we detect a problem.

When we detect a problem, give up the bio by contributing the
remainder with ENOMEM, rather than kicking the bio back right
away.

If we failed on a non-first iteration we previously could end up
modifying fields in the bio after we delivered it.  This could
account for memory corruption (none directly reported) on machines
with GBDE.
 2003-04-25 21:20:57 +00:00
Poul-Henning Kamp
af6b9f17f9 Don't count a sector in the cache unless we manage to create it. 2003-04-25 20:56:27 +00:00
Poul-Henning Kamp
f2314b445d Rename g_bde_release_sector() to g_bde_release_keysector() and pick up 
the sector from the work item.
 2003-04-25 20:35:34 +00:00
Poul-Henning Kamp
195d573278 Rename g_bde_read_sector() to g_bde_read_keysector() pick up the offset 
in the work structure.
 2003-04-25 20:16:59 +00:00
Poul-Henning Kamp
0a9c130c06 Introduce a g_waitfor_event() function which posts an event and waits for 
it to be run (or cancelled) and use this instead of home-rolled versions.
 2003-04-23 21:28:27 +00:00
Poul-Henning Kamp
a974614b05 More of the event stuff can now be private to geom_event.c 2003-04-23 20:54:42 +00:00
Poul-Henning Kamp
8cd1535a24 Rename g_call_me() to g_post_event(), and give it a flag 
argument to determine if we can M_WAITOK in malloc.
 2003-04-23 20:46:12 +00:00
Poul-Henning Kamp
d98777f8db Remove the now unused hardcoded g_post_event() event support. 2003-04-23 20:25:33 +00:00
Poul-Henning Kamp
9ab3ea7841 Turn EV_NEW_PROVIDER into a g_call_me() event. 2003-04-23 20:16:13 +00:00
Poul-Henning Kamp
f2e9a09494 Convert EV_SPOILED event to use g_call_me(). 2003-04-23 20:06:38 +00:00
Poul-Henning Kamp
9972896c00 Turn the hardwired NEW_CLASS event into a g_call_me() event. 2003-04-23 19:34:38 +00:00
Poul-Henning Kamp
b5cba4167f Move the shutdown eventhandler stuff to a more logical place. 2003-04-23 19:15:27 +00:00
Poul-Henning Kamp
bf9ab27afb Implement CONFIG_GEOM verbs "write label" and "write bootcode". 2003-04-23 08:23:01 +00:00
Poul-Henning Kamp
ca3d750e73 Introduce gctl_get_paraml() which gets a parameter only if it has the 
right length.
 2003-04-23 08:03:47 +00:00
Poul-Henning Kamp
fb9483af54 Make gctl_error() take printfline varargs. 2003-04-23 07:50:01 +00:00
Poul-Henning Kamp
668ae29c71 Remove unused event pointers in object structures. 
Remove KASSERTS which checked that they were unused.
 2003-04-23 06:54:44 +00:00
Poul-Henning Kamp
b874183561 Change the locking so that the _modify function is called with topology 
held.

The only place where we want to not hold topology is when we read
(or write) the label to disk: in the case of a disk error with a
long recovery time, holding topology would prevent open/close of
any disk device.
 2003-04-22 21:29:58 +00:00
Poul-Henning Kamp
b09d72daf8 We don't need to have a slice->start() function. 2003-04-22 21:24:37 +00:00
Poul-Henning Kamp
d3a1a13766 Do not mandate that slicers have a private ->start(), they may not need 
one.  KASSERT() that they have one if G_SLICE_HOT_START is used.
 2003-04-22 21:19:17 +00:00
Poul-Henning Kamp
ea9ab6bed2 Implement handling of CONFIG_GEOM OAM request. 2003-04-22 21:01:46 +00:00
Poul-Henning Kamp
2c30da600e Add "CONFIG_GEOM" operation to the OAM API. 2003-04-22 21:00:49 +00:00
Poul-Henning Kamp
70b4ddbb09 Collapse meta arguments into regular arguments, the distinction is 
more trouble than it is worth.
 2003-04-22 19:42:05 +00:00
Poul-Henning Kamp
989afda211 Implement a hotspot for the sunlabel. 
This means that you can no longer trash your opened partitions by writing to
the sunlabel through another partition.  This is similar to the semantics
implemented for BSD labels.
 2003-04-21 20:14:36 +00:00
Poul-Henning Kamp
666223979c Update GEOM::SUN to use the decoding functions in geom_sunlabel_enc.c 
and #defines from sys/sun_disklabel.h.
 2003-04-21 19:54:11 +00:00
Poul-Henning Kamp
9bd6be665d Use #defines from <sys/sun_disklabel.h> instead of private ones. 2003-04-21 19:42:36 +00:00
Poul-Henning Kamp
941a2f8cb5 Functions to encode and decode Sun Microsystems disk partitioning data 
structures.

Mostly by:	jake
 2003-04-21 18:41:12 +00:00
Poul-Henning Kamp
7220a9e779 Make more of the "hotspot" stuff generic: 
Give the class a way to specify the necessary action for read/delete/write:
ALLOW, DENY, START or CALL.

Update geom_bsd to use this.
 2003-04-19 10:14:39 +00:00
Poul-Henning Kamp
183a45f65e Create a dedicated structure for holding hotspot information rather than 
using slice structures for it.
 2003-04-19 10:00:22 +00:00
Poul-Henning Kamp
c72e7314c2 These two files fell off during my previous commit: put the encoding 
decoding functions for struct disklabel in a separate .c file.
 2003-04-17 08:41:08 +00:00
Poul-Henning Kamp
7715475960 More correct patch: Only call biofinish if we have not already sent 
any children down the mesh.
 2003-04-14 08:49:54 +00:00
Poul-Henning Kamp
2f912fc976 Call biofinish() also when we get a malloc() failure. 2003-04-14 08:08:17 +00:00
Poul-Henning Kamp
3924ad705e 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.
 2003-04-13 09:02:06 +00:00
Poul-Henning Kamp
537d9274dc If we hit access ahead of a spoil event, we should have negative 
delta access-counts and proceed.
 2003-04-12 17:04:34 +00:00
Poul-Henning Kamp
2b454c0ae5 Fix a bug which resulted in orphanization getting confused every now 
and then.
 2003-04-12 16:36:19 +00:00
Poul-Henning Kamp
5f5a9022b2 Retire the experimental bio_taskqueue(), it was not quite as usable as 
hoped.  It can be revived from here, should other drivers be able to
use it.
 2003-04-12 09:13:01 +00:00
Poul-Henning Kamp
0d3e96e39c 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.
 2003-04-12 08:41:26 +00:00
Poul-Henning Kamp
6e03422af0 Move the functions for encoding decoding struct dos_partition into 
a separate .c file so they can be used from userland as well.
 2003-04-12 08:34:40 +00:00