Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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Regularize my copyright notice

o Remove All Rights Reserved from my notices
o imp@FreeBSD.org everywhere
o regularize punctiation, eliminate date ranges
o Make sure that it's clear that I don't clai

Regularize my copyright notice

o Remove All Rights Reserved from my notices
o imp@FreeBSD.org everywhere
o regularize punctiation, eliminate date ranges
o Make sure that it's clear that I don't claim All Rights reserved by listing
All Rights Reserved on same line as other copyright holders (but not
me). Other such holders are also listed last where it's clear.

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MFH r338661 through r339200.

Sponsored by: The FreeBSD Foundation

Merge ^/head r338731 through r338987.

We don't need shell protection for when we're expanding matches.
Don't add it. This should fix when we do regepx matches against
variables we've set and fix wifi bring up.

PR: 231441
Approved by: re

We don't need shell protection for when we're expanding matches.
Don't add it. This should fix when we do regepx matches against
variables we've set and fix wifi bring up.

PR: 231441
Approved by: re@ (kib)
Differential Revision: https://reviews.freebsd.org/D17267

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Safely quote all variable expansions.

When expanding a variable set by a message from the kernel, safely
quote all arguments expanded when creating a command line for the
shell.

Reviewd by: Shawn W

Safely quote all variable expansions.

When expanding a variable set by a message from the kernel, safely
quote all arguments expanded when creating a command line for the
shell.

Reviewd by: Shawn Webb, Oliver Pinter, brd@
Sponsored by: Netflix

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devd: readd virtual

- my C++ knowledge is old and rusty. re-add virtual

devd: minor nits

- mark usage as noreturn
- config does not need a virtual destructor

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

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Use a more stream-lined version of fix_value.

Submitted by: ian@

Implement quote escaping. String values may now contain " if you
it is preceded by \.

foo="I \"like\" C++"

gives the value 'I "like" C++' to the variable 'foo'. If a character
other than " follows

Implement quote escaping. String values may now contain " if you
it is preceded by \.

foo="I \"like\" C++"

gives the value 'I "like" C++' to the variable 'foo'. If a character
other than " follows the \, both the \ and that character are passed
through.

Differential Revision: https://reviews.freebsd.org/D6286
Sponsored by: Netflix

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IFC @253398

Merge fresh head.

sync from head

MFC @247774

devd: Remove unnecessary empty default constructors.

Submitted by: Christoph Mallon <christoph.mallon@gmx.de>
Approved by: cperciva (mentor)

devd: Remove empty virtual destructor from class, which has noch subclasses.

Submitted by: Christoph Mallon <christoph.mallon@gmx.de>
Approved by: cperciva (mentor)

devd: Use the standard constructor of std::string instead of string("").

Submitted by: Christoph Mallon <christoph.mallon@gmx.de>
Approved by: cperciva (mentor)

Constify where possible.

Approved by: cperciva (mentor)

IFC @247348.

Sync with HEAD.

Improve devd startup time, by tweaking some string handling routines that are
heavily used when parsing config files. Mostly these changes avoid making
temporary copies of the strings, and avoid doi

Improve devd startup time, by tweaking some string handling routines that are
heavily used when parsing config files. Mostly these changes avoid making
temporary copies of the strings, and avoid doing byte at a time append
operations, on the most-used code path.

On a 1.2 GHz ARM processor this reduces the time to parse the config files
from 13 to 6 seconds.

Reviewed by: imp
Approved by: cognet (mentor)

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IFC @ r244983.

Prefer the use of initalizer lists to ctor assignment.

Approved by: cperciva
MFC after: 2 weeks