Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

mac: add new mac_ddb(4) policy

Generally, access to the kernel debugger is considered to be unsafe from
a security perspective since it presents an unrestricted interface to
inspect or modify the sy

mac: add new mac_ddb(4) policy

Generally, access to the kernel debugger is considered to be unsafe from
a security perspective since it presents an unrestricted interface to
inspect or modify the system state, including sensitive data such as
signing keys.

However, having some access to debugger functionality on production
systems may be useful in determining the cause of a panic or hang.
Therefore, it is desirable to have an optional policy which allows
limited use of ddb(4) while disabling the functionality which could
reveal system secrets.

This loadable MAC module allows for the use of some ddb(4) commands
while preventing the execution of others. The commands have been broadly
grouped into three categories:
- Those which are 'safe' and will not emit sensitive data (e.g. trace).
Generally, these commands are deterministic and don't accept
arguments.
- Those which are definitively unsafe (e.g. examine <addr>, search
<addr> <value>)
- Commands which may be safe to execute depending on the arguments
provided (e.g. show thread <addr>).

Safe commands have been flagged as such with the DB_CMD_MEMSAFE flag.

Commands requiring extra validation can provide a function to do so.
For example, 'show thread <addr>' can be used as long as addr can be
checked against the system's list of process structures.

The policy also prevents debugger backends other than ddb(4) from
executing, for example gdb(4).

Reviewed by: markj, pauamma_gundo.com (manpages)
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D35371

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Sync from head

Merge head r236710 through r238467.

IFC @238412.

IFC @ r238370

"on the their types." -> "on their types."

MFC

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

Merge head up to r232685 to projects/pf/head.

Fix various typos in manual pages.

Submitted by: amdmi3
PR: 165431
MFC after: 1 week

mdoc: drop redundant .Pp and .LP calls

They have no effect when coming in pairs, or before .Bl/.Bd

Fix typos, spelling, formatting and mdoc mistakes found by Nobuyuki while
translating these manual pages. Minor corrections by me.

Submitted by: Nobuyuki Koganemaru <n-kogane@syd.odn.ne.jp>

Update to current version of head.

mdoc: order prologue macros consistently by Dd/Dt/Os

Although groff_mdoc(7) gives another impression, this is the ordering
most widely used and also required by mdocml/mandoc.

Reviewed by: ru
Appro

mdoc: order prologue macros consistently by Dd/Dt/Os

Although groff_mdoc(7) gives another impression, this is the ordering
most widely used and also required by mdocml/mandoc.

Reviewed by: ru
Approved by: philip, ed (mentors)

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Mechanically kill hard sentence breaks and double whitespaces.

Add or correct section number in .Xr

Assorted mdoc(7) fixes.

Kill whitespace at EOL.

Approved by: re (blanket)

Document the new mac_portacl(4) policy.

Sponsored by: DARPA, Network Associates Laboratories
Obtained from: TrustedBSD Project

Properly mark up column lists. This does not affect output; I just had
the arguments to .Bl incorrect.

Sponsored by: DARPA, Network Associates Laboratories

Update cross-references to include mac(4).

Sponsored by: DARPA, Network Associates Laboratories

o Refer to "Network Associates Laboratories" instead of "NAI Labs" or
"Network Associates Labs" in the copyright notice.
o Remove clause #3 in the license terms.
o Remove the line break from my nam

o Refer to "Network Associates Laboratories" instead of "NAI Labs" or
"Network Associates Labs" in the copyright notice.
o Remove clause #3 in the license terms.
o Remove the line break from my name.

Sponsored by: DARPA, Network Associates Laboratories

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Document the LOMAC security policy.
This man page was co-written by Brian Feldman <green>.

Sponsored by: DARPA, Network Associates Laboratories

Mechanically kill hard sentence breaks and double whitespaces.