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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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libc: drop "All rights reserved" from Foundation copyrights

This has already been done for most files that have the Foundation as
the only listed copyright holder. Do it now for files that list
mul

libc: drop "All rights reserved" from Foundation copyrights

This has already been done for most files that have the Foundation as
the only listed copyright holder. Do it now for files that list
multiple copyright holders, but have the Foundation copyright in its own
section.

Sponsored by: The FreeBSD Foundation

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__monetary_load(): check for calloc() failure

Noted and reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D34140

libc/locale/lmonetary.c: minor style

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D34140

libc/locale: Fix races between localeconv(3) and setlocale(3)

Each locale embeds a lazily initialized lconv which is populated by
localeconv(3) and localeconv_l(3). When setlocale(3) updates the gl

libc/locale: Fix races between localeconv(3) and setlocale(3)

Each locale embeds a lazily initialized lconv which is populated by
localeconv(3) and localeconv_l(3). When setlocale(3) updates the global
locale, the lconv needs to be (lazily) reinitialized. To signal this,
we set flag variables in the locale structure. There are two problems:

- The flags are set before the locale is fully updated, so a concurrent
localeconv() call can observe partially initialized locale data.
- No barriers ensure that localeconv() observes a fully initialized
locale if a flag is set.

So, move the flag update appropriately, and use acq/rel barriers to
provide some synchronization. Note that this is inadequate in the face
of multiple concurrent calls to setlocale(3), but this is not expected
to work regardless.

Thanks to Henry Hu <henry.hu.sh@gmail.com> for providing a test case
demonstrating the race.

PR: 258360
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31899

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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@274682

IFC @r271694

Sync to HEAD@r271160.

libc/locale: Remove a wrong comma.

This only had some effect when debugging.

Obtained from: DragonflyBSD
MFC after: 3 days

IFC @230489 (pending review).

IFC @ r227804

Pull in the virtio drivers from head.

Implement xlocale APIs from Darwin, mainly for use by libc++. This adds a
load of _l suffixed versions of various standard library functions that use
the global locale, making them take an explicit

Implement xlocale APIs from Darwin, mainly for use by libc++. This adds a
load of _l suffixed versions of various standard library functions that use
the global locale, making them take an explicit locale parameter. Also
adds support for per-thread locales. This work was funded by the FreeBSD
Foundation.

Please test any code you have that uses the C standard locale functions!

Reviewed by: das (gdtoa changes)
Approved by: dim (mentor)

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. 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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Cosmetic: use LCMONETARY_SIZE_{FULL,MIN} defines like in other places

Add support for the 6 new C99 struct lconv members dealing with formatting
international monetary values: int_p_cs_precedes, int_n_cs_precedes,
int_p_sep_by_space, int_n_sep_by_space, int_p_sign_posn

Add support for the 6 new C99 struct lconv members dealing with formatting
international monetary values: int_p_cs_precedes, int_n_cs_precedes,
int_p_sep_by_space, int_n_sep_by_space, int_p_sign_posn, int_n_sign_posn.
This should not break existing binaries or LC_MONETARY data files.

Reviewed by: ache
MFC after: 1 month

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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

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

Do not try to convert to char already converted C monetary locale members.
Do this conversion on locale load stage instead.

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

Change mon_decimal_point from "." to "" (N/A>) as it is specified by POSIX for
POSIX locale.