Typo.

Fixed missing function types in synopsis.

Doc updates and cleanups made with the bind-4.9.4 update some time ago.
I thought I had committed these, but it seems not.

Fix an error in the description of "h_errno". Add "const" to a few
declarations to make them agree with the actual prototypes in <netdb.h>.

pull this in to avoid fixing these twice

back out last two changes, this caused the mandoc pages to be replaced by
man pages. I'll fold in the real changes in a seperate commit.

The last commit failed part-way through, re-add the generated
resolver man pages.

BSD 4.4 Lite Lib Sources

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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Markup fixes.

Fix gethostbyaddr() prototype to conform to IEEE Std 1003.1:

http://www.opengroup.org/onlinepubs/009695399/functions/gethostbyaddr.html

gethostbyaddr_r() is changed as well.
It breaks ABI backwar

Fix gethostbyaddr() prototype to conform to IEEE Std 1003.1:

http://www.opengroup.org/onlinepubs/009695399/functions/gethostbyaddr.html

gethostbyaddr_r() is changed as well.
It breaks ABI backward compatibility on 64 bit arch. So, we fix it
on 32 bit arch only for now.

Reported by: Rostislav Krasny <rosti.bsd@gmail.com>

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make gethostby*() thread-safe.

add IPv6 awareness for NIS query of gethostby*().

Inspired by: NetBSD

Mechanically kill hard sentence breaks.

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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.Xr -> .Lb for librairy. There is no manual page corresponding to .Xr.

The .Fn function

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

mdoc(7) police: "The .Fn function".

yp(4) -> yp(8).

PR: docs/30797

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

Urge the reader to start using getaddrinfo(3) and getnameinfo(3)
protocol-independant functions that don't use static memory area.

Suggested by: nik
Liked by: ume, brian

Remove whitespace at EOL.

mdoc(7) police: removed HISTORY info from the .Os call.