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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Remove $FreeBSD$: one-line nroff pattern

Remove /^\.\\"\s*\$FreeBSD\$$\n/

MFH

Sponsored by: Rubicon Communications, LLC (netgate.com)

Merge ^/head r363739 through r363986.

directory(3): Add an ERRORS section

- Add an ERRORS section for opendir(3) and closedir(3)
- Document also the errors of readdir(3), readdir_r(3) and telldir(3)
- Convert the code sample into an EXA

directory(3): Add an ERRORS section

- Add an ERRORS section for opendir(3) and closedir(3)
- Document also the errors of readdir(3), readdir_r(3) and telldir(3)
- Convert the code sample into an EXAMPLES section

PR: 75711

Submitted by: abc <abc at ai1 dot anchorage dot mtaonline dot net>
Reviewed by: 0mp, bcr, jilles
Approved by: 0mp, bcr, jilles
Obtained from: partial from OpenBSD
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25892

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MFHead @347527

Sponsored by: The FreeBSD Foundation

directory.3: add a STANDARDS section

Reviewed by: jilles, ngie
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20111

Merge ^/head r318658 through r318963.

directory(3): add trailing comma after e.g., missed in r318699

Submitted by: bjk
MFC after: 2 weeks
MFC with: r318699
Sponsored by: Dell EMC Isilon

directory(3): delete trailing whitespace and rewrite `E.g.` as `e.g.`

Reported by: make manlint
Sponsored by: Dell EMC Isilon

Merge ^/head r314420 through r314481.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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Merge ^/head r305087 through r305219.

MFhead @ r305170

directory(3): Deprecate readdir_r(). Clarify dirent buffers.

In existing implementations including FreeBSD, there is no reason to use
readdir_r() in the common case where potentially multiple thread

directory(3): Deprecate readdir_r(). Clarify dirent buffers.

In existing implementations including FreeBSD, there is no reason to use
readdir_r() in the common case where potentially multiple threads each list
their own directory. Code using readdir() is simpler.

What's more, lthough readdir_r() can safely be used on FreeBSD because
NAME_MAX is forced to 255, it cannot be used safely on systems where
{NAME_MAX} is not fixed. As a concrete example, FAT/NTFS filenames can be up
to 255 UTF-16 code units long, which can be up to 765 UTF-8 bytes.

Deprecating readdir_r() in POSIX has been proposed in
http://www.austingroupbugs.net/view.php?id=696
and glibc wants to deprecate it as well.

Reviewed by: ed, wblock
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D7678

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MFH

Sponsored by: The FreeBSD Foundation

Merge ^/head r295601 through r295844.

Remove sys/types.h

Catch up with HEAD (r280229-r284686).

Merge sync of head

Merge from HEAD

Remove the note about seekdir() removing telldir() cookies. That was
removed back in r269204.

MFC after: 3 days

MFH: r282315-r282534

Sponsored by: The FreeBSD Foundation

Tweak seekdir, telldir and readdir so that when htere are deletes going on,
as seek to teh last location saved will still work. This is needed for Samba
to be able to correctly handle delete requests

Tweak seekdir, telldir and readdir so that when htere are deletes going on,
as seek to teh last location saved will still work. This is needed for Samba
to be able to correctly handle delete requests from windows. This does not
completely fix seekdir when deletes are present but fixes the worst of the
problems. The real solution must involve some changes to the API for eh VFS
and getdirentries(2).

Obtained from: Panzura inc
MFC after: 1 week

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IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)