introduce a SOL_LOCAL for unix-domain socket level socket options
as an alias of the current 0 used for these options, as in FreeBSD.

reviewed by many.

Remove trailing whitespace.

mention truncation of the result if the size in optlen is less that the
size of the option to be returned in optval.

Fix xref.

- Introduce a new SO_RERROR socket option to explicitly turn on
receive overflow errors re-instating the default behavior to
silently ignore them as before 2018-03-19.
- Introduce a new kern.sooptions sysctl to control the default
behavior of socket options. Setting this to 0x4000 (SO_RERROR),
turns on receive overflow error reporting for all sockets.
- Change dhcpcd to turn on SO_RERROR on all its sockets.

As discussed in tech-net.

Remove ISO references

Userland changes for getsockopt2().

branches: 1.35.38; 1.35.40;
As discussed in tech-kern, provide the means to prevent delivery of SIGPIPE
on EPIPE for all file descriptor types:

- provide O_NOSIGPIPE for open,kqueue1,pipe2,dup3,fcntl(F_{G,S}ETFL) [NetBSD]
- provide SOCK_NOSIGPIPE for socket,socketpair [NetBSD]
- provide SO_NOSIGPIPE for {g,s}seckopt [NetBSD/FreeBSD/MacOSX]
- provide F_{G,S}ETNOSIGPIPE for fcntl [MacOSX]

branches: 1.34.6;
Mark up NULL with Dv. Remove trailing whitespace.

add mention of SO_ACCEPTFILTERS, language largely from FreeBSD manpage

Sort errors.

Declare all columns.

branches: 1.30.14;
Add references to various protocol pages that support setsockopt(2).
Makes it much easier to find them.

branches: 1.29.16;
\- is a minus, not -.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Use
.In header.h
instead of
.Fd #include \*[Lt]header.h\*[Gt]
Much easier to read and write, and supported by groff for ages.
Okayed by ross.

"Utilize" has exactly the same meaning as "use," but it is more
difficult to read and understand. Most manuals of English style
therefore say that you should use "use".

Merge the nathanw_sa branch.

New sentence, new line. From Robert Elz.

Generate <>& symbolically. I'm avoiding .../dist/... directories for now.

Sprinkle some __restrict into <sys/socket.h>.

Remove inclusion of <sys/types.h> from synopsis; it is no longer needed.

Sort sections, sort SEE ALSO, punctuation and miscellanous fixes.

Use EAGAIN instead of EWOULDBLOCK. The actual numeric value is
same, but EAGAIN is the posixly correct name.
Addresses misc/12960.

branches: 1.18.6;
Add a LIBRARY section to system call manual pages. While it's clear that the
libraries contain stubs only (with minor exceptions a la pipe(2)), the purpose
of this section is to provide linkage information.

branches: 1.17.6;
Last of the .Os cleanups. .Os is defined in the tmac.doc-common file,
so we shouldn't override it with versions in the manpages. Wheee!

Reflect the addition of socklen_t.

first pass at fixing up capitalization of function names and
arguments; ensure that each is correct with respect to the
implementation, rather than being correct as per english.

Mention poll(2), too, where we formerly only mentioned select(2).

fix mdoc references

merge lite-2

Add missing comma in SEE ALSO list.

Actually document that SO_LINGER's linger time is measured in seconds.

Fix typo; control message type for SO_TIMESTAMP is SCM_TIMESTAMP.

Document the SO_TIMESTAMP socket option.

merge with lite, keeping most local changes. clean up Ids

fix from Paul Vixie for (probably a cut-and-paste) typo

Fix spelling errors.

Use "Er" for argument to -width in the lists in the ERROR sections --- so
the formatting is consistant.

Clean up manpages:
Use .Fn rather than .Nm macro in HISTORY and STANDARDS sections.
Use .At and .St macros instead of spelling out "Version 6 UNIX",
"IEEE 1003.1-1988 (POSIX)", etc.

Add RCS indentifiers.

branches: 1.1.1;
Initial revision