Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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Merge ^/head r313644 through r313895.

prefix UFS symbols with UFS_ to reduce namespace pollution

Specifically:
ROOTINO -> UFS_ROOTINO
WINO -> UFS_WINO
NXADDR -> UFS_NXADDR
NDADDR -> UFS_NDADDR
NIADDR -> UFS_NIADDR
MAXSYMLINK

prefix UFS symbols with UFS_ to reduce namespace pollution

Specifically:
ROOTINO -> UFS_ROOTINO
WINO -> UFS_WINO
NXADDR -> UFS_NXADDR
NDADDR -> UFS_NDADDR
NIADDR -> UFS_NIADDR
MAXSYMLINKLEN_UFS[12] -> UFS[12]_MAXSYMLINKLEN (for consistency)

Also prefix ext2's and nandfs's NDADDR and NIADDR with EXT2_ and NANDFS_

Reviewed by: kib, mckusick
Obtained from: NetBSD
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D9536

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Convert tunefs use to nmount(2)

Reviewed by: jhb, emaste
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8822

MFH

Sponsored by: The FreeBSD Foundation

tunefs: clear the entire previous label when setting a new one

strlcpy(3) null terminates but does not zero-fill the buffer, so would
leave beind any portion of the previous volume label longer than

tunefs: clear the entire previous label when setting a new one

strlcpy(3) null terminates but does not zero-fill the buffer, so would
leave beind any portion of the previous volume label longer than the
new one.

Note that tunefs only allows -L args up to a length of MAXVOLLEN-1, so
the stored label will be null-terminated (whether or not required by
UFS).

Reviewed by: imp
Sponsored by: The FreeBSD Foundation

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Merge from head

IFC @ r254014

IFC @253398

Merge fresh head.

Constify string pointers.

Verified with: sha256(1)
MFC after: 2 weeks

Fix error check.

Submitted by: Andrey Chernov (ache@)
MFC after: 3 days

sync from head

The purpose of this change to the FFS layout policy is to reduce the
running time for a full fsck. It also reduces the random access time
for large files and speeds the traversal time for directory t

The purpose of this change to the FFS layout policy is to reduce the
running time for a full fsck. It also reduces the random access time
for large files and speeds the traversal time for directory tree walks.

The key idea is to reserve a small area in each cylinder group
immediately following the inode blocks for the use of metadata,
specifically indirect blocks and directory contents. The new policy
is to preferentially place metadata in the metadata area and
everything else in the blocks that follow the metadata area.

The size of this area can be set when creating a filesystem using
newfs(8) or changed in an existing filesystem using tunefs(8).
Both utilities use the `-k held-for-metadata-blocks' option to
specify the amount of space to be held for metadata blocks in each
cylinder group. By default, newfs(8) sets this area to half of
minfree (typically 4% of the data area).

This work was inspired by a paper presented at Usenix's FAST '13:
www.usenix.org/conference/fast13/ffsck-fast-file-system-checker

Details of this implementation appears in the April 2013 of ;login:
www.usenix.org/publications/login/april-2013-volume-38-number-2.
A copy of the April 2013 ;login: paper can also be downloaded
from: www.mckusick.com/publications/faster_fsck.pdf.

Reviewed by: kib
Tested by: Peter Holm
MFC after: 4 weeks

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The .journal file needs to reside on the ROOTINO which must not extend
beyond direct blocks. A typo caused this check to fail.

MFC

MFC @ r241285

IFC @ r242684

Sync from head

Declare functions as static and move global variables to the top;
no functional changes.

Fix sbin/ build with a 64-bit ino_t.

Original code by: Gleb Kurtsou

IFC @ r234692

sys/amd64/include/cpufunc.h
sys/amd64/include/fpu.h
sys/amd64/amd64/fpu.c
sys/amd64/vmm/vmm.c

- Add API to allow vmm FPU state init/save/restore.

FP stuff discussed with: kib

IFC @230489 (pending review).

Fix warning when compiling with gcc46:
error: variable 'Sflag' set but not used

Approved by: dim
MFC after: 3 days

IFC @ r227804

Pull in the virtio drivers from head.