libexec: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

libexec: 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

Purge more stray embedded $FreeBSD$ strings

These do not use __FBSDID but instead use bare char arrays.

Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D41957

rpc.rstatd/rwalld: Use more accurate function pointer types.

Reviewed by: zlei, rmacklem
Differential Revision: https://reviews.freebsd.org/D39521

- Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter
in place. To do per-cpu stats, convert all fields that previously were
maintained in the vmmeters that sit in pcpus to counter(9).
- Since some vmmeter stats may be touched at very early stages of boot,
before we have set up UMA and we can do counter_u64_alloc(), provide an
early counter mechanism:
o Leave one spare uint64_t in struct pcpu, named pc_early_dummy_counter.
o Point counter(9) fields of vmmeter to pcpu[0].pc_early_dummy_counter,
so that at early stages of boot, before counters are allocated we already
point to a counter that can be safely written to.
o For sparc64 that required a whole dummy pcpu[MAXCPU] array.

Further related changes:
- Don't include vmmeter.h into pcpu.h.
- vm.stats.vm.v_swappgsout and vm.stats.vm.v_swappgsin changed to 64-bit,
to match kernel representation.
- struct vmmeter hidden under _KERNEL, and only vmstat(1) is an exclusion.

This is based on benno@'s 4-year old patch:
https://lists.freebsd.org/pipermail/freebsd-arch/2013-July/014471.html

Reviewed by: kib, gallatin, marius, lidl
Differential Revision: https://reviews.freebsd.org/D10156

Remove unused vmmeter.

Rework all non-contributed files that use `struct timezone'.

This structure is not part of POSIX. According to POSIX, gettimeofday()
has the following prototype:

int gettimeofday(struct timeval *restrict tp, void *restrict tzp);

Also, POSIX states that gettimeofday() shall return 0 (as long as tzp is
not used). Remove dead error handling code. Also use NULL for a
nul-pointer instead of integer 0.

While there, change all pieces of code that only use tv_sec to use
time(3), as this provides less overhead.

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

Use sysctl to fetch stats from the kernel instead of reading variables
directly via libkvm.

PR: kern/122875, bin/123014
Tested by: Danny Braniss danny cs.huji.ac.il
MFC after: 1 week

Add the variable's type to the declaration.

Run a revision of the devstat interface:

Kernel:

Change statistics to use the *uptime() timescale (ie: relative to
boottime) rather than the UTC aligned timescale. This makes the
device statistics code oblivious to clock steps.

Change timestamps to bintime format, they are cheaper.

Remove the "busy_count", and replace it with two counter fields:
"start_count" and "end_count", which are updated in the down and
up paths respectively. This removes the locking constraint on
devstat.

Add a timestamp argument to devstat_start_transaction(), this will
normally be a timestamp set by the *_bio() function in bp->bio_t0.
Use this field to calculate duration of I/O operations.

Add two timestamp arguments to devstat_end_transaction(), one is
the current time, a NULL pointer means "take timestamp yourself",
the other is the timestamp of when this transaction started (see
above).

Change calculation of busy_time to operate on "the salami principle":
Only when we are idle, which we can determine by the start+end
counts being identical, do we update the "busy_from" field in the
down path. In the up path we accumulate the timeslice in busy_time
and update busy_from.

Change the byte_* and num_* fields into two arrays: bytes[] and
operations[].

Userland:

Change the misleading "busy_time" name to be called "snap_time" and
make the time long double since that is what most users need anyway,
fill it using clock_gettime(CLOCK_MONOTONIC) to put it on the same
timescale as the kernel fields.

Change devstat_compute_etime() to operate on struct bintime.

Remove the version 2 legacy interface: the change to bintime makes
compatibility far too expensive.

Fix a bug in systat's "vm" page where boot relative busy times would
be bogus.

Bump __FreeBSD_version to 500107

Review & Collaboration by: ken

Update to current devstat API.

Add #include <sys/resource.h>

Remove <sys/dkstat.h> #include

Rename local function havedisk() to haveadisk() to avoid conflict a
with another function by the same name in a system header.

Include <nlist.h> for nlist interfaces instead of depending on namespace
pollution in <kvm.h>.

Spell void * as void * rather than caddr_t. This is complicated by the
fact that caddr_t is often misspelled as char *.

Sponsored by: DARPA, NAI Labs

o __P removal
o use new style prototypes and function definitions
o signal handlers need an argument. Mark it unused.

The interface index space may be sparsely populated (e.g. when an
interface in the middle is if_detach()'d). Return (and handle)
ENOENT when the ifmib(4) is accessed for a nonexistent interface.

MFC after: 14 days

Fixes file descriptor leak in standalone mode.
Prevents simultaneous calls to updatestat() as function is not reentrant.

PR: bin/24857
Submitted by: Martin Butkus <mb@bagheera.thgwf.de>
MFC after: 1 month

$Id$ -> $FreeBSD$

Fix a memory leak in rpc.rstatd that shows up when it's run in standalone
mode. (i.e., not from inetd)

PR: bin/8212

Work around an alpha compiler bug.

Reviewed by: Kenneth D. Merry <ken@plutotech.com>

Update system to new device statistics code.

Submitted by: "Kenneth D. Merry" <ken@plutotech.com>
mike@smith.net.au (Mike Smith)

Make these programs compile and work correctly now that /usr/include/rpcsvc
has been ANSI-fied.

Pointed out by: bde

Remove unused #include. Display if inetd started us in case of failure.

Remove \n at end of syslog string. -Wall cleaning. Cosmetics in man page.

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Update to match changes in <net/if.h>.

Convert this program to use sysctl rather than kvm for some of its
statistics. Unfortunately, the coverage of sysctl isn't good enough to do
all of them :-( .

Remove trailing whitespace.

Updated to changes in struct vmmeter. There is a slight bogosity here:
"pageins/outs" now refers to vnode paging.

rstatd -- from FreeBSD-1.1.5.1, with changes for 4.4-Lite kvm interface.
Original rstatd by John Brezak
Submitted by: Geoff.