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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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Merge ^/head r340126 through r340212.

Add hybrid C.UTF-8 locale being identical to default C locale except
that it uses the same ctype maps and functions as other UTF-8 locales.

Reviewed by: bapt, cem, eadler
Approved by: kib (mentor, i

Add hybrid C.UTF-8 locale being identical to default C locale except
that it uses the same ctype maps and functions as other UTF-8 locales.

Reviewed by: bapt, cem, eadler
Approved by: kib (mentor, implicit)
Differential Revision: https://reviews.freebsd.org/D17833

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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 fresh head.

MFC @ r241285

IFC @ r242684

Sync from head

libc: Use O_CLOEXEC for various internal file descriptors.

This fixes a race condition where another thread may fork() before CLOEXEC
is set, unintentionally passing the descriptor to the child proc

libc: Use O_CLOEXEC for various internal file descriptors.

This fixes a race condition where another thread may fork() before CLOEXEC
is set, unintentionally passing the descriptor to the child process.

This commit only adds O_CLOEXEC flags to open() or openat() calls where no
fcntl(fd, F_SETFD, FD_CLOEXEC) follows. The separate fcntl() call still
leaves a race window so it should be fixed later.

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Rewrite split_lines() to operate safely

PR: 62694
Submitted by: moulin p <moulin.p@calyopea.com>

. style(9)
. fix/add comments (to cover changes done thru last 20 months)
. extend monetary testcase to cover int_* values

Fixes to locale code to properly use indirect pointers in order to prevent
memory leaks (fixes bugs earlier purported to be fixed).
Submitted by: Ed Moy <emoy@apple.com>
Obtained from: Apple Computer

Fixes to locale code to properly use indirect pointers in order to prevent
memory leaks (fixes bugs earlier purported to be fixed).
Submitted by: Ed Moy <emoy@apple.com>
Obtained from: Apple Computer, Inc.
MFC after: 2 weeks

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Do not include <sys/syslimits.h> directly; it is not intended for general
consumption.

Rewrite locale loading procedures, so any load failure will not affect
currently cached data. It allows a number of nice things, like: removing
fallback code from single locale loading, remove memor

Rewrite locale loading procedures, so any load failure will not affect
currently cached data. It allows a number of nice things, like: removing
fallback code from single locale loading, remove memory leak when LC_CTYPE
data loaded again and again, efficient cache use, not only for
setlocale(locale1); setlocale(locale1), but for setlocale(locale1);
setlocale("C"); setlocale(locale1) too (i.e. data file loaded only once).

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Style fixes in preparation of code rewritting

Use errno to indicate failure reason.
Remove incomplete checks for 'name' and 'PatchLocale', they must be
already checked at this point.

Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.

style(9)'ify

* Add my e-mail to copyrights
* style(9)'ify

Include <unistd.h> so that read(2) and write(2) don't cause warnings.

s/fstat/_fstat/

Approved by: phantom

add additional function parameter: bufsize_min. it's possible
to check two sizes per one function invocation now.

Suggested by: ache

Use "namespace.h" and "un-namespace.h"

Requested by: deischen