libsys: relocate implementations and manpages

Remove core system call implementations and documentation to lib/libsys
and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>.
Update paths

libsys: relocate implementations and manpages

Remove core system call implementations and documentation to lib/libsys
and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>.
Update paths to allow libc to find them in their new home.

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/908

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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/

Only return EPERM from kill(-pid) when no process was signalled.

As mandated by POSIX. Also clarify the kill(2) manpage.

While there, restructure the code in killpg1() to use helper which
keeps ov

Only return EPERM from kill(-pid) when no process was signalled.

As mandated by POSIX. Also clarify the kill(2) manpage.

While there, restructure the code in killpg1() to use helper which
keeps overall state of the process list iteration in the killpg1_ctx
structued, later used to infer the error returned.

Reported by: amdmi3
Reviewed by: jilles
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D22621

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Correct history for Unix 2nd Edition through 6th Edition for the
system calls. Man pages are missing for v2 and v5, so any entries for
those versions were inferred by new implementations of these fun

Correct history for Unix 2nd Edition through 6th Edition for the
system calls. Man pages are missing for v2 and v5, so any entries for
those versions were inferred by new implementations of these functions
in libc.

Obtained from: http://www.tuhs.org/cgi-bin/utree.pl

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kill(2): add missing section for sysctl(9)

Reported by: make manlint
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon

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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Update the kill(2) and killpg(2) man pages to the modern permission
checks. Also indicate killpg(2) is POSIX compliant.

Reviewed by: jilles
Reviewed by: wblock
Approved by: cperciva
MFC after: 3 days

Extend the description for ESRCH a bit.

This errno can also be returned if the passed process identifier doesn't
correspond with a process group.

Discussed on: arch@
MFC after: 1 week

Remove impossible error condition from the man page.

On FreeBSD, all processes have a process group, so it is impossible for
kill(2) to fail this way. POSIX also doesn't mention this error
conditio

Remove impossible error condition from the man page.

On FreeBSD, all processes have a process group, so it is impossible for
kill(2) to fail this way. POSIX also doesn't mention this error
condition.

Discussed on: arch@
MFC after: 3 weeks

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Cross-reference sigqueue(2) and kill(2).

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

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

- fix description of what processes SIGCONT can be sent to

PR: docs/58413
Reviewed by: rwatson
Approved by: blackend (mentor)

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

mdoc(7) police: Tidy up the syscall language.

Stop calling system calls "function calls".

Use "The .Fn system call" a-la "The .Nm utility".

When referring to a non-BSD implementation in
the HISTOR

mdoc(7) police: Tidy up the syscall language.

Stop calling system calls "function calls".

Use "The .Fn system call" a-la "The .Nm utility".

When referring to a non-BSD implementation in
the HISTORY section, call syscall a function,
to be safe.

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

Xref raise(3).

Use the ``.Rv -std'' mdoc(7) macro in appropriate cases.

Reviewed by: ru

mdoc(7) police:

Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case)

mdoc(7) police:

Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.

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Remove whitespace at EOL.

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

mdoc(7) police: split punctuation characters + misc fixes.

Use `Er' variable to define first column width in ERRORS section. It was
initially suggested by mdoc(7) style, but was broken over the years

Introduce ".Lb" macro to libc manpages.

More libraries manpages updates following.

$Id$ -> $FreeBSD$