resolv: Add a required include to resolv.h

Add a required include to resolv.h for sockaddr_in. This should reduce
patching required when porting code written with Linux or NetBSD in mind.

PR: 182

resolv: Add a required include to resolv.h

Add a required include to resolv.h for sockaddr_in. This should reduce
patching required when porting code written with Linux or NetBSD in mind.

PR: 182466
MFC after: 1 week

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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/

Update SEE ALSO sections for resolver.{3,5} and hosts.5

The mentioned document "Name Server Operations Guide for BIND" is
outdated, so remove it from the SEE ALSO section of hosts.5
and resolver.{3,

Update SEE ALSO sections for resolver.{3,5} and hosts.5

The mentioned document "Name Server Operations Guide for BIND" is
outdated, so remove it from the SEE ALSO section of hosts.5
and resolver.{3,5}.

PR: 266360
Reported by: Graham Perrin <grahamperrin at FreeBSD dot org>
Reviewed by: karels
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36557

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Bump .Dd for recently modified manual pages

During the removal of named(8) references, some pages were modified but their
.Dd where not updated accordingly.

Reported by: lwhsu@
Fixes: 942e234d868d

Remove references to named(8)

named(8) hasn't been in base for some time. Remove all references to it in
manual pages.

Approved by: manpages (Pau Amma)
Differential Revision: https://reviews.freebs

Remove references to named(8)

named(8) hasn't been in base for some time. Remove all references to it in
manual pages.

Approved by: manpages (Pau Amma)
Differential Revision: https://reviews.freebsd.org/D35586

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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 from head

- Merge from HEAD

Document how to enable strict RFC 1034 enforcements.

PR: kern/129477

Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.

Document return values for res_query and res_search.
h_errno is not an extern int, just a macro providing an integer lvalue.

PR: doc/50573
Submitted by: Ronald F.Guilmette <rfg@monkeys.com>
Reviewe

Document return values for res_query and res_search.
h_errno is not an extern int, just a macro providing an integer lvalue.

PR: doc/50573
Submitted by: Ronald F.Guilmette <rfg@monkeys.com>
Reviewed by: trhodes
MFC after: 3 days

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Use a prototype for res_init().

MFC after: 3 days

Expand *n't contractions.

Sort sections.

Mechanically kill hard sentence breaks.

Markup, grammar, and spelling fixes.

Make the resolver(3) and many associated interfaces much more reentrant.
The getaddrinfo(3), getipnodebyname(3) and resolver(3) can coincide now
with what should be totally reentrant, and h_errno val

Make the resolver(3) and many associated interfaces much more reentrant.
The getaddrinfo(3), getipnodebyname(3) and resolver(3) can coincide now
with what should be totally reentrant, and h_errno values will now
be preserved correctly, but this does not affect interfaces such as
gethostbyname(3) which are still mostly non-reentrant.

In all of these relevant functions, the thread-safety has been pushed
down as far as it seems possible right now. This means that operations
that are selected via nsdispatch(3) (i.e. files, yp, dns) are protected
still under global locks that getaddrinfo(3) defines, but where possible
the locking is greatly reduced. The most noticeable improvement is
that multiple DNS lookups can now be run at the same time, and this
shows major improvement in performance of DNS-lookup threaded programs,
and solves the "Mozilla tab serialization" problem.

No single-threaded applications need to be recompiled. Multi-threaded
applications that reference "_res" to change resolver(3) options will
need to be recompiled, and ones which reference "h_errno" will also
if they desire the correct h_errno values. If the applications already
understood that _res and h_errno were not thread-safe and had their own
locking, they will see no performance improvement but will not
actually break in any way.

Please note that when NSS modules are used, or when nsdispatch(3)
defaults to adding any lookups of its own to the individual libc
_nsdispatch() calls, those MUST be reentrant as well.

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mdoc(7): Properly mark C headers.

mdoc(7): Use the new feature of the .In macro.

mdoc(7) police: "The .Fa argument.".

mdoc(7) police: Fixed abuses of the .Ar and .Em macros.

mdoc(7) police: Use the new .In macro for #include statements.

mdoc(7) police: join split punctuation to macro calls.