sbin: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remo

sbin: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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hastd(8): Fix a typo in a source code comment

- s/proccesses/processes/

MFC after: 3 days

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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Remove useless calls to basename().

There are a couple of places in the source three where we call
basename() on constant strings. This is bad, because the prototype
standardized by POSIX allows the

Remove useless calls to basename().

There are a couple of places in the source three where we call
basename() on constant strings. This is bad, because the prototype
standardized by POSIX allows the implementation to use its argument as a
storage buffer.

This change eliminates some of these unportable calls to basename() in
cases where it was only added for cosmetical reasons, namely to trim
argv[0]. There's nothing wrong with setting argv[0] to the full path.

Reviewed by: jilles
Differential Revision: https://reviews.freebsd.org/D6093

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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

IFC @230489 (pending review).

For functions that return -1 on failure check exactly for -1 and not for
any negative number.

MFC after: 3 days

IFC @ r226824

MFC

Use PJDLOG_ASSERT() and PJDLOG_ABORT() everywhere instead of assert().

MFC after: 3 days

Increase debug level of "Checking hooks." message.

MFC after: 1 week

Log when we start hooks checking and when we execute a hook.

MFC after: 1 week

Use snprlcat() instead of two strlcat(3)s.

MFC after: 1 week

execve(2), not fork(2) resets signal handler to the default value (if it isn't
ignored). Correct comment talking about that.

Pointed out by: kib
MFC after: 3 days

Add a note that when custom signal handler is installed for a signal,
signal action is restored to default in child after fork(2).
In this case there is no need to do anything with dummy SIGCHLD hand

Add a note that when custom signal handler is installed for a signal,
signal action is restored to default in child after fork(2).
In this case there is no need to do anything with dummy SIGCHLD handler,
because after fork(2) it will be automatically reverted to SIG_IGN.

Obtained from: Wheel Systems Sp. z o.o. http://www.wheelsystems.com
MFC after: 3 days

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Sync: merge r214077 through r214219 from ^/head.

Use closefrom(2) instead of close(2) in a loop.

MFC after: 1 week

Clear signal mask before executing a hook.

Submitted by: Mikolaj Golub <to.my.trociny@gmail.com>
MFC after: 3 days

hook_check() is now only used to report about long-running hooks, so the
argument is redundant, remove it.

MFC after: 3 days

Plug memory leak on fork(2) failure.

Submitted by: Mikolaj Golub <to.my.trociny@gmail.com>
MFC after: 3 days

- Add hook_fini() which should be called after fork() from the main hastd
process, once it start to use hooks.
- Add hook_check_one() in case the caller expects different child processes
and once

- Add hook_fini() which should be called after fork() from the main hastd
process, once it start to use hooks.
- Add hook_check_one() in case the caller expects different child processes
and once it can recognize it, it will pass pid and status to hook_check_one().

MFC after: 2 weeks
Obtained from: Wheel Systems Sp. z o.o. http://www.wheelsystems.com

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- Run hooks in background - don't block waiting for them to finish.
- Keep all hooks we're running in a global list, so we can report when
they finish and also report when they are running for too

- Run hooks in background - don't block waiting for them to finish.
- Keep all hooks we're running in a global list, so we can report when
they finish and also report when they are running for too long.

MFC after: 2 weeks
Obtained from: Wheel Systems Sp. z o.o. http://www.wheelsystems.com

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When logging to stdout/stderr don't close those descriptors after fork().

MFC after: 2 weeks
Obtained from: Wheel Systems Sp. z o.o. http://www.wheelsystems.com