Commit Graph

270 Commits

Author SHA1 Message Date
Andrey V. Elsukov
fb86534cb1 Add sysctl and loader tunable kern.geom.part.mbr.enforce_chs that is set
by default. It can be used to disable automatic alignment to CHS geometry,
that GEOM_PART_MBR does.

Reviewed by:	wblock
MFC after:	1 week
2014-08-12 09:10:13 +00:00
Nathan Whitehorn
1ee0f08975 After EFI support was added to the installer, it needed to allow boot
partitions of types other than "freebsd-boot" (in particular, "efi").
This allows the removal of some nasty hacks for supporting PowerPC systems,
in particular aliasing freebsd-boot to apple-boot on APM and an IBM-specific
code on MBR.

This changes the installer to use the correct names, which also breaks a
degeneracy in the meaning of "freebsd-boot" that allows the addition
of support for some newer IBM systems that can boot from GPT in addition to
MBR. Since I have no idea how to detect which those systems are, leave
the default on IBM PPC systems as MBR for now.
2014-07-04 15:55:32 +00:00
Hans Petter Selasky
af3b2549c4 Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
Glen Barber
37a107a407 Revert r267961, r267973:
These changes prevent sysctl(8) from returning proper output,
such as:

 1) no output from sysctl(8)
 2) erroneously returning ENOMEM with tools like truss(1)
    or uname(1)
 truss: can not get etype: Cannot allocate memory
2014-06-27 22:05:21 +00:00
Hans Petter Selasky
3da1cf1e88 Extend the meaning of the CTLFLAG_TUN flag to automatically check if
there is an environment variable which shall initialize the SYSCTL
during early boot. This works for all SYSCTL types both statically and
dynamically created ones, except for the SYSCTL NODE type and SYSCTLs
which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to
be used in the case a tunable sysctl has a custom initialisation
function allowing the sysctl to still be marked as a tunable. The
kernel SYSCTL API is mostly the same, with a few exceptions for some
special operations like iterating childrens of a static/extern SYSCTL
node. This operation should probably be made into a factored out
common macro, hence some device drivers use this. The reason for
changing the SYSCTL API was the need for a SYSCTL parent OID pointer
and not only the SYSCTL parent OID list pointer in order to quickly
generate the sysctl path. The motivation behind this patch is to avoid
parameter loading cludges inside the OFED driver subsystem. Instead of
adding special code to the OFED driver subsystem to post-load tunables
into dynamically created sysctls, we generalize this in the kernel.

Other changes:
- Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask"
to "hw.pcic.intr_mask".
- Removed redundant TUNABLE statements throughout the kernel.
- Some minor code rewrites in connection to removing not needed
TUNABLE statements.
- Added a missing SYSCTL_DECL().
- Wrapped two very long lines.
- Avoid malloc()/free() inside sysctl string handling, in case it is
called to initialize a sysctl from a tunable, hence malloc()/free() is
not ready when sysctls from the sysctl dataset are registered.
- Bumped FreeBSD version to indicate SYSCTL API change.

MFC after:	2 weeks
Sponsored by:	Mellanox Technologies
2014-06-27 16:33:43 +00:00
Andrey V. Elsukov
91ca76a590 Add disklabel64 support to GEOM_PART class.
This partitioning scheme is used in DragonFlyBSD. It is similar to
BSD disklabel, but has the following improvements:
* metadata has own dedicated place and isn't accessible through partitions;
* all offsets are 64-bit;
* supports 16 partitions by default (has reserved place for more);
* has reserved place for backup label (but not yet implemented);
* has UUIDs for partitions and partition types;

No objections from:	geom
MFC after:	2 weeks
Relnotes:	yes
2014-06-11 10:42:34 +00:00
Andrey V. Elsukov
4042ab48c7 Allow swapping to DragonFlyBSD's swap partition.
MFC after:	2 weeks
2014-06-11 10:23:49 +00:00
Andrey V. Elsukov
0640b71dfe Add aliases for DragonFlyBSD's partition types.
MFC after:	2 weeks
2014-06-11 10:19:11 +00:00
Andrey V. Elsukov
39dcac849e Use g_conf_printf_escaped() to escape symbols, which can break
an XML tree.

MFC after:	1 week
2014-05-30 10:35:51 +00:00
Andrey V. Elsukov
579259ea0d It is safe to allow shrinking, when aligned size is bigger than current.
Tested by:	jmg
MFC after:	1 week
2014-05-07 11:18:27 +00:00
Andrey V. Elsukov
4f31a94bd2 Add an advice what to do when partition was automatically resized.
X-MFC after:	r256690
2014-05-04 20:00:08 +00:00
Andrey V. Elsukov
c778397f26 Add better error description for case when we are doing resize and
scheme-specific method returns EBUSY.

MFC after:	1 week
2014-05-04 16:55:51 +00:00
Andrey V. Elsukov
0dd7f00cee Prevent an unexpected shrinking on resizing due to alignment for MBR,
PC98 and VTOC8 schemes.

Reported by:	jmg
MFC after:	1 week
2014-05-04 16:43:57 +00:00
Andrey V. Elsukov
bc1e8f56ff For schemes that do an automatic partition aligning move this code to
separate function.

MFC after:	1 week
2014-05-04 10:14:25 +00:00
Marcel Moolenaar
4787115d04 Align and round the partitionable disk space to 4K by default.
Since this would also apply when recovering, make sure not to
align or round when that would have a partition fall outside
the partitionable area.
2014-04-12 20:28:39 +00:00
Dmitry Morozovsky
5cc596c46d Add GPT UUID for VMware vSAN meta-data partition.
Approved by:	ae
MFC after:	2 weeks
2013-12-26 21:06:12 +00:00
Marcel Moolenaar
3e5a0a6b70 Have the GPT probe return a lower priority when the MBR is not a PMBR
The purpose of the PMBR is to have the disk appear in use to GPT
unaware utilities (like fdisk).  However, if the PMBR has been changed
by a GPT unaware utlity then we must assume that this was deliberate
(as it involved removal of the special slice) and we should not treat
the unmodified GPT-specific sectors as being valid.  By lowering the
probe priority in that case, the MBR scheme will take precedence and
the kernel will end up using the MBR and not the GPT. We will still
use the GPT if the kernel does not support the MBR scheme.
2013-11-21 22:02:59 +00:00
Alexander Motin
40ea77a036 Merge GEOM direct dispatch changes from the projects/camlock branch.
When safety requirements are met, it allows to avoid passing I/O requests
to GEOM g_up/g_down thread, executing them directly in the caller context.
That allows to avoid CPU bottlenecks in g_up/g_down threads, plus avoid
several context switches per I/O.

The defined now safety requirements are:
 - caller should not hold any locks and should be reenterable;
 - callee should not depend on GEOM dual-threaded concurency semantics;
 - on the way down, if request is unmapped while callee doesn't support it,
   the context should be sleepable;
 - kernel thread stack usage should be below 50%.

To keep compatibility with GEOM classes not meeting above requirements
new provider and consumer flags added:
 - G_CF_DIRECT_SEND -- consumer code meets caller requirements (request);
 - G_CF_DIRECT_RECEIVE -- consumer code meets callee requirements (done);
 - G_PF_DIRECT_SEND -- provider code meets caller requirements (done);
 - G_PF_DIRECT_RECEIVE -- provider code meets callee requirements (request).
Capable GEOM class can set them, allowing direct dispatch in cases where
it is safe.  If any of requirements are not met, request is queued to
g_up or g_down thread same as before.

Such GEOM classes were reviewed and updated to support direct dispatch:
CONCAT, DEV, DISK, GATE, MD, MIRROR, MULTIPATH, NOP, PART, RAID, STRIPE,
VFS, ZERO, ZFS::VDEV, ZFS::ZVOL, all classes based on g_slice KPI (LABEL,
MAP, FLASHMAP, etc).

To declare direct completion capability disk(9) KPI got new flag equivalent
to G_PF_DIRECT_SEND -- DISKFLAG_DIRECT_COMPLETION.  da(4) and ada(4) disk
drivers got it set now thanks to earlier CAM locking work.

This change more then twice increases peak block storage performance on
systems with manu CPUs, together with earlier CAM locking changes reaching
more then 1 million IOPS (512 byte raw reads from 16 SATA SSDs on 4 HBAs to
256 user-level threads).

Sponsored by:	iXsystems, Inc.
MFC after:	2 months
2013-10-22 08:22:19 +00:00
Andrey V. Elsukov
884c8e4fea Add an automatic resize support to the GEOM_PART class.
When parent provider has been resized, the scheme specific G_PART_RESIZE
method does an update of scheme's metadata. But all changes are not saved
to disk, until `gpart commit` will be called.

Discussed with:	trasz
MFC after:	1 month
2013-10-17 16:18:43 +00:00
Andrey V. Elsukov
87c0c612d8 Remove stub implementation.
MFC after:	1 week
2013-09-05 09:44:09 +00:00
Andrey V. Elsukov
b74dd6c77b gpt_entries is used as limit for the number of partition entries in
the GEOM_PART. Instead of just using number of entries from the GPT
header, calculate this limit based on the reserved space between
GPT header and first available LBA.

MFC after:	2 weeks
2013-08-08 16:09:20 +00:00
Marcel Moolenaar
e01c6f329a Change <sys/diskpc98.h> to not redefine the same symbols that are
being defined in <sys/diskmbr.h>. Instead give the symbols here a
"PC98_" prefix. This way, both <sys/diskmbr.h> and <sys/diskpc98.h>
can be included in the same C source file.

The renaming is trivial. The only gotcha is that DOSBBSECTOR is
also redefined from 0 to 1. This because DOSBBSECTOR was always
used in conjunction with an addition of 1. The PC98_BBSECTOR symbol
is defined as 1 and the expression is simplified.

Note: it is not believed that ports are seriously impacted; or at
all for that matter.

Approved by: nyan@
2013-08-07 00:00:48 +00:00
Marcel Moolenaar
b9fdaa9b19 Remove inclusion of <sys/diskmbr.h>. We have no business knowing
anything related to MBR in this file.
2013-08-04 21:00:22 +00:00
Marcel Moolenaar
3bd22a9cc8 Change the set and unset ctlreqs by making the index argument optional.
This allows setting attributes on tables. One simply does not provide
an index in that case. Otherwise the entry corresponding the index has
the attribute set or unset.

Use this change to fix a relatively longstanding bug in our GPT scheme
that's the result of rev 198097 (relatively harmless) followed by rev
237057 (damaging). The damaging part being that our GPT scheme always
has the active flag set on the PMBR slice. This is in violation with
EFI. Existing EFI implementions for both x86 and ia64 reject the GPT.
As such, GPT disks created by us aren't usable under EFI because of
that.

After this change, GPT disks never have the active flag set on the PMBR
slice. In order to make the GPT disk bootable under some x86 BIOSes,
the reason of rev 198097, one must now set the active attribute on the
gpt table. The kernel will apply this to the PMBR slice For (S)ATA:
	gpart set -a active ada0

To fix an existing GPT disk that has the active flag set in the PMBR,
and that does not need the flag, use (again for (S)ATA):
	gpart unset -a active ada0

The EBR, MBR & PC98 schemes, which also impement at least 1 attribute,
now check to make sure the entry passed is valid. They do not have
attributes that apply to the table.
2013-06-09 23:34:26 +00:00
Marcel Moolenaar
0f4389991c Remove stub implementation. 2013-06-09 23:12:43 +00:00
Konstantin Belousov
db7bfaa8ce The geom_part provider supports unmapped bio iff the underlying
provider does so, since geom_part never inspects the bio_data.

Sponsored by:	The FreeBSD Foundation
Tested by:	pho
2013-03-19 14:50:24 +00:00
Gavin Atkinson
10f29053d2 Support the FAT16 partition type in gpart(8)
PR:		kern/174714
Submitted by:	4721 at hushmail dot com
MFC after:	1 week
2013-03-07 22:32:41 +00:00
Andriy Gapon
a90c9dfeab g_part_taste: directly destroy consumer and geom here, no need for withering
Besides withered but still alive consumers may interfere with
re-tatsing.

MFC after:	16 days
2012-10-06 19:52:50 +00:00
Ed Schouten
24d1105dde Remove unneeded G_PF_CANDELETE flag.
This flag is only used by GEOM so it can be propagated to the character
device's SI_CANDELETE. Unfortunately, SI_CANDELETE seems to do nothing.
2012-08-28 19:28:31 +00:00
Alexander Motin
3631c6382f Implement media change notification for DA and CD removable media devices.
It includes three parts:
 1) Modifications to CAM to detect media media changes and report them to
disk(9) layer. For modern SATA (and potentially UAS) devices it utilizes
Asynchronous Notification mechanism to receive events from hardware.
Active polling with TEST UNIT READY commands with 3 seconds period is used
for incapable hardware. After that both CD and DA drivers work the same way,
detecting two conditions: "NOT READY: Medium not present" after medium was
detected previously, and "UNIT ATTENTION: Not ready to ready change, medium
may have changed". First one reported to disk(9) as media removal, second
as media insert/change. To reliably receive second event new
AC_UNIT_ATTENTION async added to make UAs broadcasted to all periphs by
generic error handling code in cam_periph_error().
 2) Modifications to GEOM core to handle media remove and change events.
Media removal handled by spoiling all consumers attached to the provider.
Media change event also schedules provider retaste after spoiling to probe
new media. New flag G_CF_ORPHAN was added to consumers to reflect that
consumer is in process of destruction. It allows retaste to create new
geom instance of the same class, while previous one is still dying.
 3) Modifications to some GEOM classes: DEV -- to report media change
events to devd; VFS -- to handle spoiling same as orphan to prevent
accessing replaced media. PART class already handles spoiling alike to
orphan.

Reviewed by:	silence on geom@ and scsi@
Tested by:	avg
Sponsored by:	iXsystems, Inc. / PC-BSD
MFC after:	2 months
2012-07-29 11:51:48 +00:00
Edward Tomasz Napierala
a1cf7f75a6 Make it possible to resize opened partitions.
Sponsored by:	FreeBSD Foundation
2012-07-20 17:51:20 +00:00
Andrey V. Elsukov
d4746e107f Always reconstruct partition entries in the PMBR when Boot Camp is
disabled. This helps to easily recover from situations when PMBR is
damaged and contains no entries.

MFC after:	1 week
2012-06-14 11:17:54 +00:00
Marcel Moolenaar
f24a8224b2 Add a partition type for nandfs to the apm, bsd, gpt and vtoc8 schemes.
The gpart alias for these partition types is "freebsd-nandfs".
2012-05-25 20:33:34 +00:00
Dmitry Morozovsky
b20e4de387 VMware environments are not unusual now. Add VMware partitions recognition
(both MBR for ESXi <= 4.1 and GPT for ESXi 5) to g_part.

Reviewed by:	ae
Approved by:	ae
MFC after:	2 weeks
2012-04-18 11:59:03 +00:00
Andrey V. Elsukov
ba289b84b0 VMDB offset should be greater than logical volume size only for MBR. 2012-03-29 07:29:27 +00:00
Andrey V. Elsukov
1c45872b03 Do proper cleanup for the GPT case when an error occurs. 2012-03-29 06:37:02 +00:00
Andrey V. Elsukov
472794bb9f Check that scheme is not already registered. This may happens when a
KLD is preloaded with loader(8) and leads to infinity loops.

Also do not return EEXIST error code from MOD_LOAD handler, because
we have undocumented(?) ability replace kernel's module with preloaded one.
And if we have so, then preloaded module will be initialized first.
Thus error in MOD_LOAD handler will be triggered for the kernel.

PR:		kern/165573
MFC after:	3 weeks
2012-03-23 07:26:17 +00:00
Andrey V. Elsukov
f1104f7190 Add CTLFLAG_TUN to sysctls.
MFC after:	1 month
2012-03-19 13:21:10 +00:00
Andrey V. Elsukov
37d1a121d9 Add new GEOM_PART_LDM module that implements the Logical Disk Manager
scheme. The LDM is a logical volume manager for MS Windows NT and it
is also known as dynamic volumes. It supports about 2000 partitions
and also provides the capability for software RAID implementations.

This version implements only partitioning scheme capability and based
on the linux-ntfs project documentation and several publications across
the Web. NOTE: JBOD, RAID0 and RAID5 volumes aren't supported.

An access to the LDM metadata is read-only. When LDM is on the disk
partitioned with MBR we can also destroy metadata. For the GPT
partitioned disks destroy action is not supported.

Reviewed by:	ivoras (previous version)
MFC after:	1 month
2012-03-19 13:14:44 +00:00
Andrey V. Elsukov
422783e365 Make kern.geom.part node not static. Also add CTLFLAG_TUN to the
check_integrity sysctl.

MFC after:	1 month
2012-03-19 12:57:52 +00:00
Andrey V. Elsukov
5284aff594 Add MODULE_DEPEND() to geom_part modules.
MFC after:	2 weeks
2012-03-15 08:39:10 +00:00
Ed Maste
972f6945b8 Remove unactionable message about label geometry
It's not clear to a user what they should do after seeing the "geometry
does not match label" kernel message, and it does not appear to present
a problem in practice.  Thus, just remove the messages.

Approved by:	marcel
2012-03-08 01:48:44 +00:00
Andrey V. Elsukov
5357f27569 If nested scheme allows dump kernel to its partition, we may allow
dump for the parent partition too.

MFC after:	2 weeks
2012-02-20 06:35:52 +00:00
Andrey V. Elsukov
c3f9f306d2 Add alias for the partition type 0x0f. Now "ebr" name is used for both
types 0x05 and 0x0f, but 0x05 is preferred and used when partition is
created with "gpart add -t ebr ...".
This should keep EBR partitions accessible after r231754 for those,
who have EBR on the partition with type 0x0f.
2012-02-20 05:48:57 +00:00
Andrey V. Elsukov
3bcf7d7191 Add additional check to EBR probe and create methods:
don't try probe and create  EBR scheme when parent partition type
is not "ebr". This fixes error messages about corrupted EBR for
some partitions where is actually another partition scheme.

NOTE: if you have EBR on the partition with different than "ebr"
(0x05) type, then you will lost access to partitions until it will be
changed.

MFC after:	2 weeks
2012-02-15 10:33:29 +00:00
Andrey V. Elsukov
0d8bc07eba Add PART::type attribute handler. It returns partition type as string.
MFC after:	2 weeks
2012-02-15 10:02:19 +00:00
Andrey V. Elsukov
48ef46e55a Add alias for the partition with type 0x42 to the MBR scheme.
MFC after:	1 week
2012-02-10 09:55:18 +00:00
Andrey V. Elsukov
f44d97bd0c Let's be more realistic and limit maximum number of partition to 4k.
MFC after:	1 week
2012-02-10 06:44:30 +00:00
Ed Maste
23f6856fff Correct typo in comment (numbver) 2012-02-04 18:14:39 +00:00
Andrey V. Elsukov
7b540236bb The scheme code may not know about some inconsistency in the metadata.
So, add an integrity check after recovery attempt.

MFC after:	1 week
2012-02-01 09:28:16 +00:00
Nathan Whitehorn
090dd24636 Experimental support for booting CHRP-type PowerPC systems from hard disks. 2012-01-25 03:37:39 +00:00
Don Lewis
b5bad28182 Allow an MBR primary or extended Linux swap partition to be specified
as the system dump device.  This was already allowed for GPT.  The Linux
swap metadata at the beginning of the partition should not be disturbed
because the crash dump is written at the end.

Reviewed by:	alfred, pjd, marcel
MFC after:	2 weeks
2012-01-13 18:32:56 +00:00
Andrey V. Elsukov
a85a0d469e Add an ability to increase number of allocated APM entries when we
have reserved free space in the APM area.
Also instead of one write request per each APM entry, use MAXPHY
sized writes when we are updating APM.

MFC after:	1 month
2011-11-28 16:07:26 +00:00
Andrey V. Elsukov
64c4a83782 The size of APM could be bigger than number of already allocated entries.
And the first usable sector should not start from the inside of APM area.

MFC after:	1 month
2011-11-28 12:38:24 +00:00
Ed Schouten
6472ac3d8a Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.
The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.
2011-11-07 15:43:11 +00:00
Andrey V. Elsukov
aea26bc05a Our geom withering function could take some time before geom with its
providers and consumers will be destroyed.  Before take some actions
with a geom, check that it is not destroyed at the moment.

Tested by:	nwhitehorn
MFC after:	1 week
2011-10-28 11:45:24 +00:00
Marcel Moolenaar
369fe59de8 Add support for Boot Camp. The support is defined as follows:
o   Detect when Boot Camp is enabled (i.e. the MBR mirrors the GPT).
o   When Boot Camp is enabled, update the MBR whenever we write the GPT.
o   Creation of a Boot Camp enabled GPT is not supported.
o   Automatically disable Boot Camp when the GPT has been changed so that
    there's either no EFI partition or no HFS+ partition.
o   The first 4 partitions (by index) get mirrored in the MBR.

Requested by, discussed with and tested by: kris@pcbsd.org
MFC after: 1 week
2011-10-23 02:51:23 +00:00
Marius Strobl
479a4ef021 Allow to dump on Solaris swap partitions.
PR:		161764
Submitted by:	Peter Jeremy
2011-10-18 20:16:02 +00:00
Andrey V. Elsukov
2b9be05588 Initialize elements of state array when creating the GPT table.
This fixes the problem, when the secondary GPT header is not erased when
partition table destroyed. Move equal operations from g_part_gpt_create
and g_part_gpt_recover to the separate function g_gpt_set_defaults.

Reported by:	dwhite
MFC after:	1 week
2011-06-29 05:41:14 +00:00
Andrey V. Elsukov
671dfdbf11 EBR could contain an early stage of boot code. But we do not support it.
Remove message about non empty bootcode, we can not break something
while GEOM_PART_EBR_COMPAT is defined.

But without GEOM_PART_EBR_COMPAT any changes in EBR are allowed and we
can accidentally wipe the boot code. To do not break anything save
the first EBR chunk and keep it untouched each time when we are
changing EBR. Note that we are still not support boot code for EBR.

PR:		kern/141235
MFC after:	1 month
2011-06-27 12:42:48 +00:00
Andrey V. Elsukov
61162e857a MS Windows NT+ uses 4 bytes at offset 0x1b8 in the MBR to identify
disk drive. The boot0cfg(8) utility preserves these 4 bytes when is
writing bootcode to keep a multiboot ability.
Change gpart's bootcode method to keep DSN if it is not zero. Also
do not allow writing bootcode with size not equal to MBRSIZE.

PR:		kern/157819
Tested by:	Eir Nym
MFC after:	1 month
2011-06-27 10:42:06 +00:00
Andrey V. Elsukov
503e6682cd Change the way how we update bootcode for BSD scheme.
Since the only parameter that we check is size of bootcode, then
allow only two sizes: size of boot1 and size of /boot/boot.
This partially protects users from losing ability to boot if incorrect
bootcode is specified.

Requested by:	ru
2011-06-20 12:22:30 +00:00
Andrey V. Elsukov
38c64884ff Add diagnostic message about not aligned partitions.
Idea from:	ivoras
2011-06-03 06:58:24 +00:00
Andrey V. Elsukov
9854b4eeee Some partitioning tools may have a different opinion about disk
geometry and partitions may start from withing the first track.
If we found such partitions, then do not reserve space of the
first track, only first sector.
2011-05-27 06:37:42 +00:00
Andrey V. Elsukov
6fd1e2e013 Do not truncate available disk space to the closest track boundary. 2011-05-25 09:45:13 +00:00
Andrey V. Elsukov
23a3490034 Do not truncate available disk space to the closest track boundary. 2011-05-25 09:38:12 +00:00
Andrey V. Elsukov
db48d4a92e Do not truncate available disk space to the closest track boundary. 2011-05-25 09:32:19 +00:00
Andrey V. Elsukov
49d12fd5be Remove unused variable.
MFC after:	1 week
2011-05-24 06:46:07 +00:00
Andrey V. Elsukov
e471361279 Remove unused variable.
MFC after:	1 week
2011-05-24 06:44:16 +00:00
Andrey V. Elsukov
d0c8ecb812 Make diagnostic messages more specific. With bootverbose print out
all inconsistencies of integrity in the partition table, not first
found only.

Requested by:	kib
2011-05-16 15:59:50 +00:00
Andrey V. Elsukov
b6c4978f6f Add diagnostic messages for integrity checks. 2011-05-16 12:00:32 +00:00
Andrey V. Elsukov
6e81b75a3c Add a sysctl kern.geom.part.check_integrity for those who has corrupt
partition tables and lost an ability to boot after r221788.
Also unhide an error message from bootverbose, this would help to
easier determine the problem.
2011-05-15 20:03:54 +00:00
Andrey V. Elsukov
c63e8fe201 Add basic metadata integrity check. In case when partition table was
probed and read successfull, but it contains invalid values (e.g.
overlapped partitions, offset or size is out of bounds), then table
will be rejected.

MFC after:	1 month
2011-05-11 19:59:43 +00:00
Andrey V. Elsukov
f30b6bcb60 Limit number of sectors that can be addressed.
MFC after:	1 week
2011-05-08 12:28:13 +00:00
Andrey V. Elsukov
284a82d0bb Limit number of sectors that can be addressed.
MFC after:	1 week
2011-05-08 12:20:30 +00:00
Andrey V. Elsukov
6017ae3fdd Limit number of sectors that can be addressed.
Reject table if blkcount from metadata is greater than provider.
2011-05-08 12:16:39 +00:00
Andrey V. Elsukov
2920db1713 Limit number of sectors that can be addressed.
MFC after:	1 week
2011-05-08 12:11:16 +00:00
Andrey V. Elsukov
4675b2b65f Replace UINT_MAX to UINT32_MAX.
Pointed out by:	kib
MFC after:	1 week
2011-05-08 11:42:51 +00:00
Andrey V. Elsukov
ab0ffb4c88 Limit number of sectors that can be addressed.
MFC after:	1 week
2011-05-08 11:20:27 +00:00
Andrey V. Elsukov
cfbdf6c3c5 Limit number of sectors that can be addressed.
MFC after:	1 week
2011-05-08 11:16:17 +00:00
Gavin Atkinson
47bae5fd09 Remove an incorrect be16toh() that prevented geom_part_apm from working on
little-endian machines.

Reviewed by:	marcel
MFC after:	2 weeks
2011-04-15 12:32:52 +00:00
Alexander Leidinger
cb08c2cc83 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
2011-02-25 10:24:35 +00:00
Rebecca Cran
6bccea7c2b Fix typos - remove duplicate "the".
PR:	bin/154928
Submitted by:	Eitan Adler <lists at eitanadler.com>
MFC after: 	3 days
2011-02-21 09:01:34 +00:00
Yoshihiro Takahashi
9f0f6d5fd7 Add support to set a slice name. 2011-02-19 11:09:38 +00:00
Yoshihiro Takahashi
5d627bb558 Add support to write boot menu. 2011-02-11 13:18:00 +00:00
Andrey V. Elsukov
88007f6102 Add new user-friendly aliases for partition types for the MBR and
EBR schemes: fat32, ebr, linux-data, linux-raid, linux-swap and
linux-lvm. Add bios-boot GUID and alias for the GPT scheme. It used by
GRUB 2 loader. Also do sorting definitions of types in diskmbr.h
and in g_part.c.

PR:		bin/120990, kern/147664
MFC after:	2 weeks
2011-01-28 11:13:01 +00:00
Andrey V. Elsukov
1313160649 While inspecting the disklabel check that start offset of partition is
within provider's bounds. If not then reject this disklabel.
Mark bbarea as NULL to do not free it again in destroy method.

MFC after:	1 week
2011-01-27 08:02:26 +00:00
Andrey V. Elsukov
799eac8c3d Limit maximum number of GPT entries to 4k. It is most realistic value
and can prevent kernel memory exhausting when big value is specified
from command line.

Split reading and writing operation to several iteration to do not
trigger KASSERT when data length is greater than MAXPHYS.

PR:             kern/144962, kern/147851
MFC after:      2 weeks
2011-01-18 09:52:53 +00:00
Matthew D Fleming
ed7beddc48 Fix a memory overflow where the input length to g_gpt_utf8_to_utf16()
was specified incorrectly, causing the bzero to run past the end of a
malloc(9)'d object.

Submitted by:	Eric Youngblut < eyoungblut AT isilon DOT com >
MFC after:	3 days
2011-01-07 16:46:20 +00:00
Nathan Whitehorn
e76b061420 Add an entry to the gpart XML to determine if the geom has pending changes
that need to be committed (or undone).

MFC after:	2 weeks
2011-01-06 03:36:04 +00:00
Andrey V. Elsukov
f25481193e Allow destroying EBR in COMPAT (default) mode.
MFC after:	2 week
2010-12-28 08:42:12 +00:00
Andrey V. Elsukov
d3507dff37 Make EBR probe method less strictly to be able detect EBRs with
small non fatal inconsistency. EBR may contain boot loader and sometimes
it just has some garbage data. Now this does not prevent FreeBSD to use
extended partitions. But since we do not support bootcode for EBR we mark
tables which have non empty boot area as corrupt. This does make them
readonly and we can not damage this data.

PR:		kern/141235
MFC after:	1 month
2010-12-28 08:36:44 +00:00
Rebecca Cran
fa5f3816c4 Don't warn if a partition appears not to be aligned on a track boundary.
Modern disks use LBA and create a fake CHS geometry that doesn't have any
relation to the on-disk layout of data.
2010-12-07 20:46:11 +00:00
Ivan Voras
e5c723f123 Add a note about the magic number 20. Actually, 22.75 entries fit in
a 512 byte sector but when choosing magic numbers, 20 looks nicer.

Discussed with:	marcel
2010-12-02 19:47:27 +00:00
Andrey V. Elsukov
55514bdfc0 Fix regression introduced in r215088: gpart(8) reports
"arg0 'provider': Invalid argument" after creating new partition
table.
Move code for search of existing geom into g_part_find_geom
function and use this function instead of g_part_parm_geom
in g_part_ctl_create.

Approved by:	kib (mentor)
2010-11-11 12:13:41 +00:00
Andrey V. Elsukov
7085c3bc98 In r212554 name of G_PART_PARM_GEOM and G_PART_PARM_PROVIDER
ctlreq parameters was changed to "arg0". Fix the last place where
it is used.

Approved by:	kib (mentor)
2010-11-10 14:38:51 +00:00
Andrey V. Elsukov
e7926a3703 Reimplemented "gpart destroy -F". Now it does all work in kernel.
This was needed for recover implementation.

Implement the recover command for GPT. Now GPT will marked as
corrupt when any of three types of corruption will be detected:
1. Damaged primary GPT header or table
2. Damaged secondary GPT header or table
3. Secondary header is not located in the last LBA
Marked GPT becomes read-only. Any changes with corrupt table
are prohibited. Only "destroy" and "recover" commands are allowed.

Discussed with:	geom@ (mostly silence)
Tested by:	Ilya A. Arhipov
Approved by:	mav (mentor)
MFC after:	2 weeks
2010-10-25 16:23:35 +00:00
Rui Paulo
42a783c16a The canonical way to print __func__ when using KASSERT() is to write
("%s", __func__). This avoids clang's -Wformat-string warnings.
2010-10-13 11:35:59 +00:00
Andrey V. Elsukov
21bf062e7e Replace strlen(_PATH_DEV) with sizeof(_PATH_DEV) - 1.
Suggested by:	kib
Approved by:	kib (mentor)
MFC after:	5 days
2010-10-09 20:20:27 +00:00
Andrey V. Elsukov
b1da166ef1 Some schemes can allocate memory for internal purposes but when
GEOM does withering this memory doesn't freed. Add G_PART_DESTROY
call to g_part_wither. Also add missed g_free() call to G_PART_READ
method for MBR and PC98 schemes.

Submitted by:	jh (previous version)
Reviewed by:	pjd
Approved by:	kib (mentor)
2010-09-25 18:27:29 +00:00