libc: Purge unneeded cdefs.h

These sys/cdefs.h are not needed. Purge them. They are mostly left-over
from the $FreeBSD$ removal. A few in libc are still required for macros
that cdefs.h defines. Kee

libc: Purge unneeded cdefs.h

These sys/cdefs.h are not needed. Purge them. They are mostly left-over
from the $FreeBSD$ removal. A few in libc are still required for macros
that cdefs.h defines. Keep those.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D42385

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Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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MFhead@r344527

Merge ^/head r344178 through r344512.

Remove some redundant code in _posix1e_acl_strip_np

This was discovered through examination -- acl_copy_entry() copies the
tag type and permset fields.

Reviewed by: trasz, pfg
Sponsored by: iXsyste

Remove some redundant code in _posix1e_acl_strip_np

This was discovered through examination -- acl_copy_entry() copies the
tag type and permset fields.

Reviewed by: trasz, pfg
Sponsored by: iXsystems Inc.
Differential Revision: https://reviews.freebsd.org/D19240

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libc: further adoption of SPDX licensing ID tags.

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

libc: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified 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.

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Merge from head

Sponsored by: Gandi.net

Merge from head

Finish merging from head, messed up in previous attempt

Merge r286744-r287584 from head.

Merge ^/head r286858 through r287489.

Fix acl_strip_np(3) breakage introduced in r279962.

MFC after: 1 month
Sponsored by: The FreeBSD Foundation

Merge sync of head

MFH: r278968-r280640

Sponsored by: The FreeBSD Foundation

Merge r278538 through r280226.

Merge from head

Merge ^/head r279893 through r279984.

libc: plug memory leaks in edge cases for the posix1e code.

CID: 1016705
CID: 1016706
CID: 1016707

Differential Revision: https://reviews.freebsd.org/D2023

Move the code around so that libc behaviour does not depend on a variable
that was supposed to be kernel-only. There should be no functional changes.

Make acl_strip_np(3) use new trivial ACL format for NFSv4 ACls (three
entries instead of six). This makes "setfacl -b" do the right thing
for ACLs on ZFS. UFS recognizes both kinds of trivial ACLs;

Make acl_strip_np(3) use new trivial ACL format for NFSv4 ACls (three
entries instead of six). This makes "setfacl -b" do the right thing
for ACLs on ZFS. UFS recognizes both kinds of trivial ACLs; no change
there.

MFC after: 2 months

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First step at adopting FreeBSD to support PSARC/2010/029. This makes
acl_is_trivial_np(3) properly recognize the new trivial ACLs. From
the user point of view, that means "ls -l" no longer shows pl

First step at adopting FreeBSD to support PSARC/2010/029. This makes
acl_is_trivial_np(3) properly recognize the new trivial ACLs. From
the user point of view, that means "ls -l" no longer shows plus signs
for all the files when running ZFS v28.

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Arrgh, tested wrong source tree _again_. Fix previous commit. Also,
this and previous one are MFC candidate.

MFC after: 1 month

Add minor optimization. It's less strict than its kernel counterpart
due to upcoming ACL changes required by the new ZFS.

Fix usage of uninitialized variable.

Found with: Coverity Prevent
CID: 7517
Approved by: re (kib)