Fix typos: s/trough/through/

move bi-endian disklabel support from the kernel and libsa into libkern.

- dkcksum() and dkcksum_sized() move from subr_disk.c and from
libsa into libkern/dkcksum.c (which is missing _sized() vers

move bi-endian disklabel support from the kernel and libsa into libkern.

- dkcksum() and dkcksum_sized() move from subr_disk.c and from
libsa into libkern/dkcksum.c (which is missing _sized() version),
using the version from usr.sbin/disklabel.

- swap_disklabel() moves from subr_disk_mbr.c into libkern, now called
disklabel_swap(). (the sh3 version should be updated to use this.)

- DISKLABEL_EI becomes a first-class option with opt_disklabel.h.

- add libkern.h to libsa/disklabel.c.

this enables future work for bi-endian libsa/ufs.c (relevant for ffsv1,
ffsv2, lfsv1, and lfsv2), as well as making it possible for ports not
using subr_disk_mbr.c to include bi-endian disklabel support (which,
afaict, includes any disk on mbr-supporting platforms that do not have
an mbr as well as disklabel.)

builds successsfully on: alpha, i386, amd64, sun2, sun3, evbarm64,
evbarm64-eb, sparc, and sparc64. tested in anita on i386 and sparc,
testing in hardware on evbarm64*.

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Revert subr_disk_mbr.c r.1.54

Requested by <christos> as there can be a better way to fix the original
problem with alignment.

Decorate check_label_magic() with __noubsan

Requested by <christos>

Revert src/sys/kern/subr_disk_mbr.c r.1.52

Addressed in a better way in r. 1.53.

Ensure in validate_label() that struct disklabel pointer is 8-byte aligned

The label is searched each 4 bytes and can be detected in an unaligned
location. Before any operations on it, copy it to pr

Ensure in validate_label() that struct disklabel pointer is 8-byte aligned

The label is searched each 4 bytes and can be detected in an unaligned
location. Before any operations on it, copy it to promptly aligned local
copy on the stack.

This is a missing part of the following change:

revision 1.108
date: 2011-01-18 20:52:24 +0100; author: matt; state: Exp; lines: +2 -1;
Make struct disklabel 8 byte aligned. This increases its size by 4 bytes
on IPL32 platforms so add code in sys_ioctl (and netbsd32_ioctl) to deal
with the older/smaller diskabel size. This change makes disklabel the
same for both IPL32 and LP64 platforms

OK by <martin>

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Avoid unaligned pointer arithmetic in check_label_magic()

Replace the logic of calculating the address with with base + offset.

Reported by GCC8.

Reported-by: syzbot+56769dece0ec3e35731e@syzkaller

Avoid unaligned pointer arithmetic in check_label_magic()

Replace the logic of calculating the address with with base + offset.

Reported by GCC8.

Reported-by: syzbot+56769dece0ec3e35731e@syzkaller.appspotmail.com

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Factor out the magic checking code for the label, and make it not depend
on alignment.

centralize setdisklabel(9)

CID-1427768: Off by one

use a fixed-size type, this code also exists in
sys/dev/dkwedge/dkwedge_bsdlabel.c

PR kern/51208
Add DISKLABEL_EI (``Endian-Independent'' disklabel) kernel option to machines
that support Master Boot Record (MBR)

If the MBR is a protective MBR, don't bother looking at it.

No longer determine availability of ISO and UDF partitions, we default
to allow access to both. Only use a found ISO header to access the
correct session.

revert previous; the problem was off by one in the bios device comparison
in x86_autoconf.c

Don't kill the iso partition at 'a' when we have a udf raw partition.
Makes cd0a mountable again. Should be pulled up to 6 (after people
verify that it works in the broken cases)
http://mail-index.ne

Don't kill the iso partition at 'a' when we have a udf raw partition.
Makes cd0a mountable again. Should be pulled up to 6 (after people
verify that it works in the broken cases)
http://mail-index.netbsd.org/current-users/2012/06/14/msg020415.html

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dependant -> dependent

This not working on ews4800mips has nothing to do with rump, so:
_RUMPKERNEL -> _MACHINE != ews4800mips

Don't #error on invalid LABELSECTOR or LABELOFFSET on __RUMPKERNEL build.

As mentioned in src/sys/rump/dev/lib/libdisk/Makefile,
rump(4) builds don't check if each ${MACHINE} actually supports
MBR i

Don't #error on invalid LABELSECTOR or LABELOFFSET on __RUMPKERNEL build.

As mentioned in src/sys/rump/dev/lib/libdisk/Makefile,
rump(4) builds don't check if each ${MACHINE} actually supports
MBR in MD readdisklabel(9) ops while it pulls MD <machine/disklabel.h>.

Workarounds so long broken build of ews4800mips.

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Fix typo, no code change.

Make this work on some m68k ports which like putting the disklabel
in the third sector (or have copypasted disklabel.h from a port
which likes doing that ;).

If cpu_disklabel includes struct dkbad, define __HAVE_DISKLABEL_DKBAD.
This allows use of subr_disk_mbr on all archs. Default to it for
the rump disk component. No functional change for regular ker

If cpu_disklabel includes struct dkbad, define __HAVE_DISKLABEL_DKBAD.
This allows use of subr_disk_mbr on all archs. Default to it for
the rump disk component. No functional change for regular kernels.
(The other option would've been to include dkbad in disklabels
everywhere, but arguably this approach has less possible side-effects,
especially given that wedges and related magic will take over the
world any second now).

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opt for _KERNEL_OPT

Don't claim its an ISO partitioning scheme too early in the label. An MBR
might me there instead.

Fix the mess i made with the iso partitioning reading due to the fact that
disk_read_sector() wants DEV_BLKSIZE blkno's BUT sectorsize unit lengths
specified... how `logical'.

Real fixup pending on

Fix the mess i made with the iso partitioning reading due to the fact that
disk_read_sector() wants DEV_BLKSIZE blkno's BUT sectorsize unit lengths
specified... how `logical'.

Real fixup pending on discussion on tech-kern/source-changes.

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