lib: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

lib: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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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/

Merge ^/head r325999 through r326131.

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier f

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

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.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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MFhead@r320180

Merge ^/head r319973 through 321382.

Merge ^/head r320398 through r320572.

Revert r300385 and r300624 which was false positive
reported by cppcheck.

dup_ncp() tries to allocate a buffer of MAXNETCONFIGLINE
as tmp, which is then assigned to p->nc_netid via strcpy,
so the fr

Revert r300385 and r300624 which was false positive
reported by cppcheck.

dup_ncp() tries to allocate a buffer of MAXNETCONFIGLINE
as tmp, which is then assigned to p->nc_netid via strcpy,
so the free(p->nc_netid) would have correctly released
the memory in case nc_lookups() fails, therefore, the
allerged leak never existed.

MFC after: 3 days

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libc: provide some bounds-checking through reallocarray(3).

reallocarray(3) is a non portable extension that originated in OpenBSD.
Given that it is already in FreeBSD's libc it is useful for the ca

libc: provide some bounds-checking through reallocarray(3).

reallocarray(3) is a non portable extension that originated in OpenBSD.
Given that it is already in FreeBSD's libc it is useful for the cases
where reallocation involves a multiplication.

MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D9955

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Fix up r300385

I accidentally glossed over the fact that tmp is manipulated via strchr, so
if we tried to free `tmp` after r300385, it would have crashed.

Create a separate pointer (tmp2) to track

Fix up r300385

I accidentally glossed over the fact that tmp is manipulated via strchr, so
if we tried to free `tmp` after r300385, it would have crashed.

Create a separate pointer (tmp2) to track the original allocation of `tmp`,
and free `tmp2` if `p->nc_lookups` can't be malloced

MFC after: 4 days
X-MFC with: r300385
Reported by: Coverity
CID: 1356026
Sponsored by: EMC / Isilon Storage Division

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Don't leak `tmp` if `p->nc_lookups` can't be malloced

MFC after: 1 week
Reported by: cppcheck
Sponsored by: EMC / Isilon Storage Division

libc: spelling fixes.

Mostly on comments.

MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

Catch up with head (r291075).

Merge from head r290483

Remove unnecessary `if (x)` tests before calling `free(x)`; free(3)
already employs this check

MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division

Merge from head

Sponsored by: Gandi.net

Merge from head

Merge from head

Sync up with head (up to r288341).

Merge ^/head r288100 through r288125.

Use ANSI C prototypes. Eliminates -Wold-style-definition warnings.

Merge head

IFC @264767