Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

3 files changed, 1474 insertions, 0 deletions

diff --git a/system_cmds/sysctl.tproj/sysctl.8 b/system_cmds/sysctl.tproj/sysctl.8
new file mode 100644
index 0000000..d421e7a
--- /dev/null
+++ b/system_cmds/sysctl.tproj/sysctl.8
@@ -0,0 +1,390 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	From: @(#)sysctl.8	8.1 (Berkeley) 6/6/93
+.\" $FreeBSD$
+.\"
+.Dd January 17, 2011
+.Dt SYSCTL 8
+.Os
+.Sh NAME
+.Nm sysctl
+.Nd get or set kernel state
+.Sh SYNOPSIS
+.Nm
+.Op Fl bdehiNnoqx
+.Ar name Ns Op = Ns Ar value
+.Ar ...
+.Nm
+.Op Fl bdehNnoqx
+.Fl a
+.Sh DESCRIPTION
+The
+.Nm
+utility retrieves kernel state and allows processes with appropriate
+privilege to set kernel state.
+The state to be retrieved or set is described using a
+.Dq Management Information Base
+.Pq Dq MIB
+style name, described as a dotted set of
+components.
+.Pp
+The following options are available:
+.Bl -tag -width indent
+.It Fl A
+Equivalent to
+.Fl o a
+(for compatibility).
+.It Fl a
+List all the currently available non-opaque values.
+This option is ignored if one or more variable names are specified on
+the command line.
+.It Fl b
+Force the value of the variable(s) to be output in raw, binary format.
+No names are printed and no terminating newlines are output.
+This is mostly useful with a single variable.
+.It Fl d
+Print the description of the variable instead of its value.
+.It Fl e
+Separate the name and the value of the variable(s) with
+.Ql = .
+This is useful for producing output which can be fed back to the
+.Nm
+utility.
+This option is ignored if either
+.Fl N
+or
+.Fl n
+is specified, or a variable is being set.
+.It Fl h
+Format output for human, rather than machine, readability.
+.It Fl i
+Ignore unknown OIDs.
+The purpose is to make use of
+.Nm
+for collecting data from a variety of machines (not all of which
+are necessarily running exactly the same software) easier.
+.It Fl N
+Show only variable names, not their values.
+This is particularly useful with shells that offer programmable
+completion.
+To enable completion of variable names in
+.Xr zsh 1 Pq Pa ports/shells/zsh ,
+use the following code:
+.Bd -literal -offset indent
+listsysctls () { set -A reply $(sysctl -AN ${1%.*}) }
+compctl -K listsysctls sysctl
+.Ed
+.Pp
+To enable completion of variable names in
+.Xr tcsh 1 ,
+use:
+.Pp
+.Dl "complete sysctl 'n/*/`sysctl -Na`/'"
+.It Fl n
+Show only variable values, not their names.
+This option is useful for setting shell variables.
+For instance, to save the pagesize in variable
+.Va psize ,
+use:
+.Pp
+.Dl "set psize=`sysctl -n hw.pagesize`"
+.It Fl o
+Show opaque variables (which are normally suppressed).
+The format and length are printed, as well as a hex dump of the first
+sixteen bytes of the value.
+.It Fl q
+Suppress some warnings generated by
+.Nm
+to standard error.
+.It Fl X
+Equivalent to
+.Fl x a
+(for compatibility).
+.It Fl x
+As
+.Fl o ,
+but prints a hex dump of the entire value instead of just the first
+few bytes.
+.El
+.Pp
+The information available from
+.Nm
+consists of integers, strings, and opaque types.
+The
+.Nm
+utility
+only knows about a couple of opaque types, and will resort to hexdumps
+for the rest.
+The opaque information is much more useful if retrieved by special
+purpose programs such as
+.Xr ps 1 ,
+.Xr systat 1 ,
+and
+.Xr netstat 1 .
+.Pp
+.\" Some of the variables which cannot be modified during normal system
+.\" operation can be initialized via
+.\" .Xr loader 8
+.\" tunables.
+.\" This can for example be done by setting them in
+.\" .Xr loader.conf 5 .
+.\" Please refer to
+.\" .Xr loader.conf 5
+.\" for more information on which tunables are available and how to set them.
+.\" .Pp
+The string and integer information is summarized below.
+For a detailed description of these variable see
+.Xr sysctl 3 .
+.Pp
+The changeable column indicates whether a process with appropriate
+privilege can change the value.
+String and integer values can be set using
+.Nm .
+.Bl -column xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx integerxxx
+.It Sy "Name	Type	Changeable"
+.It "hw.activecpu	integer	no"
+.It "hw.busfrequency	integer	no"
+.It "hw.busfrequency_max	integer	no"
+.It "hw.busfrequency_min	integer	no"
+.It "hw.byteorder	integer	no"
+.It "hw.cacheconfig	struct	no"
+.It "hw.cachelinesize	integer	no"
+.It "hw.cachesize	struct	no"
+.It "hw.cpu64bit_capable	integer	no"
+.It "hw.cpufamily	integer	no"
+.It "hw.cpufrequency	integer	no"
+.It "hw.cpufrequency_max	integer	no"
+.It "hw.cpufrequency_min	integer	no"
+.It "hw.cpusubtype	integer	no"
+.It "hw.cputhreadtype	integer	no"
+.It "hw.cputype	integer	no"
+.It "hw.l1dcachesize	integer	no"
+.It "hw.l1icachesize	integer	no"
+.It "hw.l2cachesize	integer	no"
+.It "hw.l3cachesize	integer	no"
+.It "hw.logicalcpu	integer	no"
+.It "hw.logicalcpu_max	integer	no"
+.It "hw.memsize	integer	no"
+.It "hw.ncpu	integer	no"
+.It "hw.packages	integer	no"
+.It "hw.pagesize	integer	no"
+.It "hw.physicalcpu	integer	no"
+.It "hw.physicalcpu_max	integer	no"
+.It "hw.tbfrequency	integer	no"
+.It "kern.argmax	integer	no"
+.It "kern.bootargs	string	no"
+.It "kern.boottime	struct	no"
+.It "kern.clockrate	struct	no"
+.It "kern.coredump	integer	yes"
+.It "kern.corefile	string	yes"
+.It "kern.flush_cache_on_write	integer	yes"
+.It "kern.hostid	integer	yes"
+.It "kern.hostname	string	yes"
+.It "kern.job_control	integer	no"
+.It "kern.maxfiles	integer	yes"
+.It "kern.maxfilesperproc	integer	yes"
+.It "kern.maxnbuf	integer	yes"
+.It "kern.maxproc	integer	yes"
+.It "kern.maxprocperuid	integer	yes"
+.It "kern.maxvnodes	integer	yes"
+.It "kern.msgbuf	integer	yes"
+.It "kern.nbuf	integer	no"
+.It "kern.netboot	integer	no"
+.It "kern.ngroups	integer	no"
+.It "kern.nisdomainname	string	yes"
+.It "kern.num_files	integer	no"
+.It "kern.num_tasks	integer	no"
+.It "kern.num_taskthreads	integer	no"
+.It "kern.num_threads	integer	no"
+.It "kern.num_vnodes	integer	no"
+.It "kern.nx	integer	yes"
+.It "kern.osrelease	string	no"
+.It "kern.osrevision	integer	no"
+.It "kern.ostype	string	no"
+.It "kern.osversion	string	yes"
+.It "kern.posix1version	integer	no"
+.It "kern.procname	string	yes"
+.It "kern.safeboot	integer	no"
+.It "kern.saved_ids	integer	no"
+.It "kern.secure_kernel	integer	no"
+.It "kern.securelevel	integer	yes"
+.It "kern.singleuser	integer	no"
+.It "kern.sleeptime	struct	no"
+.It "kern.slide	integer	no"
+.It "kern.stack_depth_max	integer	no"
+.It "kern.stack_size	integer	no"
+.It "kern.sugid_coredump	integer	yes"
+.It "kern.sugid_scripts	integer	yes"
+.It "kern.symfile	string	no"
+.It "kern.usrstack	integer	no"
+.It "kern.usrstack64	integer	no"
+.It "kern.uuid	string	no"
+.It "kern.version	string	no"
+.It "kern.waketime	struct	no"
+.It "machdep.cpu.address_bits.physical	integer	no"
+.It "machdep.cpu.address_bits.virtual	integer	no"
+.It "machdep.cpu.brand	integer	no"
+.It "machdep.cpu.brand_string	string	no"
+.It "machdep.cpu.cache.L2_associativity	integer	no"
+.It "machdep.cpu.cache.linesize	integer	no"
+.It "machdep.cpu.cache.size	integer	no"
+.It "machdep.cpu.core_count	integer	no"
+.It "machdep.cpu.cores_per_package	integer	no"
+.It "machdep.cpu.extfamily	integer	no"
+.It "machdep.cpu.extfeature_bits	integer	no"
+.It "machdep.cpu.extfeatures	string	no"
+.It "machdep.cpu.extmodel	integer	no"
+.It "machdep.cpu.family	integer	no"
+.It "machdep.cpu.feature_bits	integer	no"
+.It "machdep.cpu.features	string	no"
+.It "machdep.cpu.leaf7_feature_bits	integer	no"
+.It "machdep.cpu.leaf7_features	string	no"
+.It "machdep.cpu.logical_per_package	integer	no"
+.It "machdep.cpu.max_basic	integer	no"
+.It "machdep.cpu.max_ext	integer	no"
+.It "machdep.cpu.microcode_version	integer	no"
+.It "machdep.cpu.model	integer	no"
+.It "machdep.cpu.processor_flag	integer	no"
+.It "machdep.cpu.signature	integer	no"
+.It "machdep.cpu.stepping	integer	no"
+.It "machdep.cpu.thread_count	integer	no"
+.It "machdep.cpu.tlb.data.large	integer	no"
+.It "machdep.cpu.tlb.data.large_level1	integer	no"
+.It "machdep.cpu.tlb.data.small	integer	no"
+.It "machdep.cpu.tlb.data.small_level1	integer	no"
+.It "machdep.cpu.tlb.inst.large	integer	no"
+.It "machdep.cpu.tlb.inst.small	integer	no"
+.It "machdep.cpu.tlb.shared	integer	no"
+.It "machdep.cpu.ucupdate	integer	yes"
+.It "machdep.cpu.vendor	string	no"
+.It "machdep.cpu.xsave.extended_state	integer	no"
+.It "machdep.tsc.deep_idle_rebase	integer	yes"
+.It "machdep.tsc.frequency	integer	no"
+.It "machdep.tsc.nanotime.generation	integer	no"
+.It "machdep.tsc.nanotime.shift	integer	no"
+.It "net.inet.ip.forwarding	integer	yes"
+.It "net.inet.ip.portrange.first	integer	yes"
+.It "net.inet.ip.portrange.hifirst	integer	yes"
+.It "net.inet.ip.portrange.hilast	integer	yes"
+.It "net.inet.ip.portrange.last	integer	yes"
+.It "net.inet.ip.portrange.lowfirst	integer	yes"
+.It "net.inet.ip.portrange.lowlast	integer	yes"
+.It "net.inet.ip.redirect	integer	yes"
+.It "net.inet.ip.ttl	integer	yes"
+.It "net.inet.udp.checksum	integer	yes"
+.It "net.inet.udp.maxdgram	integer	yes"
+.It "vm.loadavg	struct	no"
+.It "vm.swapusage	struct	no"
+.It "user.bc_base_max	integer	no"
+.It "user.bc_dim_max	integer	no"
+.It "user.bc_scale_max	integer	no"
+.It "user.bc_string_max	integer	no"
+.It "user.coll_weights_max	integer	no"
+.It "user.cs_path	string	no"
+.It "user.expr_nest_max	integer	no"
+.It "user.line_max	integer	no"
+.It "user.posix2_c_bind	integer	no"
+.It "user.posix2_c_dev	integer	no"
+.It "user.posix2_char_term	integer	no"
+.It "user.posix2_fort_dev	integer	no"
+.It "user.posix2_fort_run	integer	no"
+.It "user.posix2_localedef	integer	no"
+.It "user.posix2_sw_dev	integer	no"
+.It "user.posix2_upe	integer	no"
+.It "user.posix2_version	integer	no"
+.It "user.re_dup_max	integer	no"
+.It "user.stream_max	integer	no"
+.It "user.tzname_max	integer	no"
+.El
+.Sh FILES
+.Bl -tag -width ".In netinet/icmp_var.h" -compact
+.It In sys/sysctl.h
+definitions for top level identifiers, second level kernel and hardware
+identifiers, and user level identifiers
+.It In sys/socket.h
+definitions for second level network identifiers
+.It In sys/gmon.h
+definitions for third level profiling identifiers
+.It In vm/vm_param.h
+definitions for second level virtual memory identifiers
+.It In netinet/in.h
+definitions for third level Internet identifiers and
+fourth level IP identifiers
+.It In netinet/icmp_var.h
+definitions for fourth level ICMP identifiers
+.It In netinet/udp_var.h
+definitions for fourth level UDP identifiers
+.El
+.Sh EXAMPLES
+For example, to retrieve the maximum number of processes allowed
+in the system, one would use the following request:
+.Pp
+.Dl "sysctl kern.maxproc"
+.Pp
+To set the maximum number of processes allowed
+per uid to 1000, one would use the following request:
+.Pp
+.Dl "sysctl kern.maxprocperuid=1000"
+.Pp
+Information about the system clock rate may be obtained with:
+.Pp
+.Dl "sysctl kern.clockrate"
+.Pp
+Information about the load average history may be obtained with:
+.Pp
+.Dl "sysctl vm.loadavg"
+.Pp
+More variables than these exist, and the best and likely only place
+to search for their deeper meaning is undoubtedly the source where
+they are defined.
+.Sh COMPATIBILITY
+The
+.Fl w
+option has been deprecated and is silently ignored.
+.Sh SEE ALSO
+.Xr sysctl 3 ,
+.\" .Xr loader.conf 5 ,
+.Xr sysctl.conf 5
+.\" .Xr loader 8
+.Sh HISTORY
+A
+.Nm
+utility first appeared in
+.Bx 4.4 .
+.Pp
+In
+.Fx 2.2 ,
+.Nm
+was significantly remodeled.
+.\" .Sh BUGS
+.\" The
+.\" .Nm
+.\" utility presently exploits an undocumented interface to the kernel
+.\" sysctl facility to traverse the sysctl tree and to retrieve format
+.\" and name information.
+.\" This correct interface is being thought about for the time being.
diff --git a/system_cmds/sysctl.tproj/sysctl.c b/system_cmds/sysctl.tproj/sysctl.c
new file mode 100644
index 0000000..ca86999
--- /dev/null
+++ b/system_cmds/sysctl.tproj/sysctl.c
@@ -0,0 +1,1009 @@
+/*
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__unused static const char copyright[] =
+"@(#) Copyright (c) 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)from: sysctl.c	8.1 (Berkeley) 6/6/93";
+#endif
+__unused static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#ifdef __APPLE__
+#include <mach/machine/vm_param.h>
+#include <mach/machine/vm_types.h>
+#include <mach/mach_types.h>
+#else // !__APPLE__
+#include <sys/vmmeter.h>
+#endif // !__APPLE__
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <locale.h>
+#ifdef __APPLE__
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static int	aflag, bflag, dflag, eflag, hflag, iflag;
+static int	Nflag, nflag, oflag, qflag, xflag, warncount;
+
+static int	oidfmt(int *, int, char *, u_int *);
+static void	parse(const char *);
+#ifdef __APPLE__
+static int	show_var(int *, int, int);
+#else
+static int	show_var(int *, int);
+#endif
+static int	sysctl_all(int *oid, int len);
+static int	name2oid(char *, int *);
+
+#ifndef __APPLE__
+static int	set_IK(const char *, int *);
+#endif
+
+#ifdef __APPLE__
+// Shims for FreeBSD source compatibility.
+#define CTLTYPE_UINT 0xa
+#define CTLTYPE_LONG 0xb
+#define CTLTYPE_ULONG 0xc
+#define CTLTYPE_S64 0xd
+#define CTLTYPE_U64 0xe
+
+#define CTLFLAG_TUN 0
+
+// Support for CTL_USER
+const struct ctlname names[] = CTL_NAMES;
+const struct ctlname user_names[] = CTL_USER_NAMES;
+const int user_names_count = sizeof(user_names) / sizeof(*user_names);
+#endif
+
+static void
+usage(void)
+{
+
+	(void)fprintf(stderr, "%s\n%s\n",
+	    "usage: sysctl [-bdehiNnoqx] name[=value] ...",
+	    "       sysctl [-bdehNnoqx] -a");
+	exit(1);
+}
+
+int
+main(int argc, char **argv)
+{
+	int ch;
+
+	setlocale(LC_NUMERIC, "");
+	setbuf(stdout,0);
+	setbuf(stderr,0);
+
+	while ((ch = getopt(argc, argv, "AabdehiNnoqwxX")) != -1) {
+		switch (ch) {
+		case 'A':
+			/* compatibility */
+			aflag = oflag = 1;
+			break;
+		case 'a':
+			aflag = 1;
+			break;
+		case 'b':
+			bflag = 1;
+			break;
+		case 'd':
+			dflag = 1;
+			break;
+		case 'e':
+			eflag = 1;
+			break;
+		case 'h':
+			hflag = 1;
+			break;
+		case 'i':
+			iflag = 1;
+			break;
+		case 'N':
+			Nflag = 1;
+			break;
+		case 'n':
+			nflag = 1;
+			break;
+		case 'o':
+			oflag = 1;
+			break;
+		case 'q':
+			qflag = 1;
+			break;
+		case 'w':
+			/* compatibility */
+			/* ignored */
+			break;
+		case 'X':
+			/* compatibility */
+			aflag = xflag = 1;
+			break;
+		case 'x':
+			xflag = 1;
+			break;
+		default:
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (Nflag && nflag)
+		usage();
+	if (aflag && argc == 0)
+		exit(sysctl_all(0, 0));
+	if (argc == 0)
+		usage();
+
+	warncount = 0;
+	while (argc-- > 0)
+		parse(*argv++);
+	exit(warncount);
+}
+
+/*
+ * Parse a name into a MIB entry.
+ * Lookup and print out the MIB entry if it exists.
+ * Set a new value if requested.
+ */
+static void
+parse(const char *string)
+{
+	int len, i, j;
+	void *newval = 0;
+	int intval;
+	unsigned int uintval;
+	long longval;
+	unsigned long ulongval;
+	size_t newsize = 0;
+	int64_t i64val;
+	uint64_t u64val;
+	int mib[CTL_MAXNAME];
+	char *cp, *bufp, buf[BUFSIZ], *endptr, fmt[BUFSIZ];
+	u_int kind;
+
+	cp = buf;
+	if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ)
+		errx(1, "oid too long: '%s'", string);
+	bufp = strsep(&cp, "=");
+	if (cp != NULL) {
+		while (isspace(*cp))
+			cp++;
+		newval = cp;
+		newsize = strlen(cp);
+	}
+	len = name2oid(bufp, mib);
+
+	if (len < 0) {
+		if (iflag)
+			return;
+		if (qflag)
+			exit(1);
+		else
+			errx(1, "unknown oid '%s'", bufp);
+	}
+
+	if (oidfmt(mib, len, fmt, &kind))
+		err(1, "couldn't find format of oid '%s'", bufp);
+
+	if (newval == NULL || dflag) {
+		if ((kind & CTLTYPE) == CTLTYPE_NODE) {
+			if (dflag) {
+#ifdef __APPLE__
+				i = show_var(mib, len, 1);
+#else
+				i = show_var(mib, len);
+#endif
+				if (!i && !bflag)
+					putchar('\n');
+			}
+			sysctl_all(mib, len);
+		} else {
+#ifdef __APPLE__
+			i = show_var(mib, len, 1);
+#else
+			i = show_var(mib, len);
+#endif
+			if (!i && !bflag)
+				putchar('\n');
+		}
+	} else {
+		if ((kind & CTLTYPE) == CTLTYPE_NODE)
+			errx(1, "oid '%s' isn't a leaf node", bufp);
+
+		if (!(kind & CTLFLAG_WR)) {
+			if (kind & CTLFLAG_TUN) {
+				warnx("oid '%s' is a read only tunable", bufp);
+				errx(1, "Tunable values are set in /boot/loader.conf");
+			} else {
+				errx(1, "oid '%s' is read only", bufp);
+			}
+		}
+
+		if ((kind & CTLTYPE) == CTLTYPE_INT ||
+		    (kind & CTLTYPE) == CTLTYPE_UINT ||
+		    (kind & CTLTYPE) == CTLTYPE_LONG ||
+		    (kind & CTLTYPE) == CTLTYPE_ULONG ||
+		    (kind & CTLTYPE) == CTLTYPE_S64 ||
+		    (kind & CTLTYPE) == CTLTYPE_U64) {
+			if (strlen(newval) == 0)
+				errx(1, "empty numeric value");
+		}
+
+		switch (kind & CTLTYPE) {
+			case CTLTYPE_INT:
+				if (strcmp(fmt, "IK") == 0) {
+#ifndef __APPLE__
+					if (!set_IK(newval, &intval))
+#endif
+						errx(1, "invalid value '%s'",
+						    (char *)newval);
+ 				} else {
+					intval = (int)strtol(newval, &endptr,
+					    0);
+					if (endptr == newval || *endptr != '\0')
+						errx(1, "invalid integer '%s'",
+						    (char *)newval);
+				}
+				newval = &intval;
+				newsize = sizeof(intval);
+				break;
+			case CTLTYPE_UINT:
+				uintval = (int) strtoul(newval, &endptr, 0);
+				if (endptr == newval || *endptr != '\0')
+					errx(1, "invalid unsigned integer '%s'",
+					    (char *)newval);
+				newval = &uintval;
+				newsize = sizeof(uintval);
+				break;
+			case CTLTYPE_LONG:
+				longval = strtol(newval, &endptr, 0);
+				if (endptr == newval || *endptr != '\0')
+					errx(1, "invalid long integer '%s'",
+					    (char *)newval);
+				newval = &longval;
+				newsize = sizeof(longval);
+				break;
+			case CTLTYPE_ULONG:
+				ulongval = strtoul(newval, &endptr, 0);
+				if (endptr == newval || *endptr != '\0')
+					errx(1, "invalid unsigned long integer"
+					    " '%s'", (char *)newval);
+				newval = &ulongval;
+				newsize = sizeof(ulongval);
+				break;
+			case CTLTYPE_STRING:
+				break;
+			case CTLTYPE_S64:
+				i64val = strtoimax(newval, &endptr, 0);
+				if (endptr == newval || *endptr != '\0')
+					errx(1, "invalid int64_t '%s'",
+					    (char *)newval);
+				newval = &i64val;
+				newsize = sizeof(i64val);
+				break;
+			case CTLTYPE_U64:
+				u64val = strtoumax(newval, &endptr, 0);
+				if (endptr == newval || *endptr != '\0')
+					errx(1, "invalid uint64_t '%s'",
+					    (char *)newval);
+				newval = &u64val;
+				newsize = sizeof(u64val);
+				break;
+			case CTLTYPE_OPAQUE:
+				/* FALLTHROUGH */
+			default:
+				errx(1, "oid '%s' is type %d,"
+					" cannot set that", bufp,
+					kind & CTLTYPE);
+		}
+
+#ifdef __APPLE__
+		i = show_var(mib, len, 1);
+#else
+		i = show_var(mib, len);
+#endif
+		if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
+			if (!i && !bflag)
+				putchar('\n');
+			switch (errno) {
+#ifdef __APPLE__
+			case ENOTSUP:
+#endif // __APPLE__
+			case EOPNOTSUPP:
+				errx(1, "%s: value is not available",
+					string);
+			case ENOTDIR:
+				errx(1, "%s: specification is incomplete",
+					string);
+			case ENOMEM:
+				errx(1, "%s: type is unknown to this program",
+					string);
+			default:
+				warn("%s", string);
+				warncount++;
+				return;
+			}
+		}
+		if (!bflag)
+			printf(" -> ");
+		i = nflag;
+		nflag = 1;
+#ifdef __APPLE__
+		j = show_var(mib, len, 1);
+#else
+		j = show_var(mib, len);
+#endif
+		if (!j && !bflag)
+			putchar('\n');
+		nflag = i;
+	}
+}
+
+/* These functions will dump out various interesting structures. */
+
+static int
+S_clockinfo(int l2, void *p)
+{
+	struct clockinfo *ci = (struct clockinfo*)p;
+
+	if (l2 != sizeof(*ci)) {
+		warnx("S_clockinfo %d != %zu", l2, sizeof(*ci));
+		return (1);
+	}
+#ifdef __APPLE__
+	printf(hflag ? "{ hz = %'d, tick = %'d, tickadj = %'d, profhz = %'d, stathz = %'d }" :
+	       "{ hz = %d, tick = %d, tickadj = %d, profhz = %d, stathz = %d }",
+	       ci->hz, ci->tick, ci->tickadj, ci->profhz, ci->stathz);
+#else
+	printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
+		"{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
+		ci->hz, ci->tick, ci->profhz, ci->stathz);
+#endif
+	return (0);
+}
+
+static int
+S_loadavg(int l2, void *p)
+{
+	struct loadavg *tv = (struct loadavg*)p;
+
+	if (l2 != sizeof(*tv)) {
+		warnx("S_loadavg %d != %zu", l2, sizeof(*tv));
+		return (1);
+	}
+	printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
+		(double)tv->ldavg[0]/(double)tv->fscale,
+		(double)tv->ldavg[1]/(double)tv->fscale,
+		(double)tv->ldavg[2]/(double)tv->fscale);
+	return (0);
+}
+
+static int
+S_timeval(int l2, void *p)
+{
+	struct timeval *tv = (struct timeval*)p;
+	time_t tv_sec;
+	char *p1, *p2;
+
+	if (l2 != sizeof(*tv)) {
+		warnx("S_timeval %d != %zu", l2, sizeof(*tv));
+		return (1);
+	}
+	printf(hflag ? "{ sec = %'jd, usec = %'ld } " :
+		"{ sec = %jd, usec = %ld } ",
+		(intmax_t)tv->tv_sec, (long)tv->tv_usec);
+	tv_sec = tv->tv_sec;
+	p1 = strdup(ctime(&tv_sec));
+	for (p2=p1; *p2 ; p2++)
+		if (*p2 == '\n')
+			*p2 = '\0';
+	fputs(p1, stdout);
+	free(p1);
+	return (0);
+}
+
+#ifndef __APPLE__
+static int
+S_vmtotal(int l2, void *p)
+{
+	struct vmtotal *v = (struct vmtotal *)p;
+	int pageKilo = getpagesize() / 1024;
+
+	if (l2 != sizeof(*v)) {
+		warnx("S_vmtotal %d != %zu", l2, sizeof(*v));
+		return (1);
+	}
+
+	printf(
+	    "\nSystem wide totals computed every five seconds:"
+	    " (values in kilobytes)\n");
+	printf("===============================================\n");
+	printf(
+	    "Processes:\t\t(RUNQ: %hd Disk Wait: %hd Page Wait: "
+	    "%hd Sleep: %hd)\n",
+	    v->t_rq, v->t_dw, v->t_pw, v->t_sl);
+	printf(
+	    "Virtual Memory:\t\t(Total: %dK Active: %dK)\n",
+	    v->t_vm * pageKilo, v->t_avm * pageKilo);
+	printf("Real Memory:\t\t(Total: %dK Active: %dK)\n",
+	    v->t_rm * pageKilo, v->t_arm * pageKilo);
+	printf("Shared Virtual Memory:\t(Total: %dK Active: %dK)\n",
+	    v->t_vmshr * pageKilo, v->t_avmshr * pageKilo);
+	printf("Shared Real Memory:\t(Total: %dK Active: %dK)\n",
+	    v->t_rmshr * pageKilo, v->t_armshr * pageKilo);
+	printf("Free Memory:\t%dK\n", v->t_free * pageKilo);
+
+	return (0);
+}
+
+static int
+set_IK(const char *str, int *val)
+{
+	float temp;
+	int len, kelv;
+	const char *p;
+	char *endptr;
+
+	if ((len = strlen(str)) == 0)
+		return (0);
+	p = &str[len - 1];
+	if (*p == 'C' || *p == 'F') {
+		temp = strtof(str, &endptr);
+		if (endptr == str || endptr != p)
+			return (0);
+		if (*p == 'F')
+			temp = (temp - 32) * 5 / 9;
+		kelv = temp * 10 + 2732;
+	} else {
+		kelv = (int)strtol(str, &endptr, 10);
+		if (endptr == str || *endptr != '\0')
+			return (0);
+	}
+	*val = kelv;
+	return (1);
+}
+#endif // !__APPLE__
+
+#ifdef __APPLE__
+static int
+S_xswusage(int l2, void *p)
+{
+        struct xsw_usage *xsu = (struct xsw_usage *)p;
+
+	if (l2 != sizeof(*xsu)) {
+		warnx("S_xswusage %d != %ld", l2, sizeof(*xsu));
+		return (1);
+	}
+	fprintf(stdout,
+		"total = %.2fM  used = %.2fM  free = %.2fM  %s",
+		((double)xsu->xsu_total) / (1024.0 * 1024.0),
+		((double)xsu->xsu_used) / (1024.0 * 1024.0),
+		((double)xsu->xsu_avail) / (1024.0 * 1024.0),
+		xsu->xsu_encrypted ? "(encrypted)" : "");
+	return (0);
+}
+
+static int
+T_dev_t(int l2, void *p)
+{
+	dev_t *d = (dev_t *)p;
+
+	if (l2 != sizeof(*d)) {
+		warnx("T_dev_T %d != %ld", l2, sizeof(*d));
+		return (1);
+	}
+	if ((int)(*d) != -1) {
+		if (minor(*d) > 255 || minor(*d) < 0)
+			printf("{ major = %d, minor = 0x%x }",
+				major(*d), minor(*d));
+		else
+			printf("{ major = %d, minor = %d }",
+				major(*d), minor(*d));
+	}
+	return (0);
+}
+
+static int
+S_quads(int len, void *p)
+{
+	size_t size = sizeof(int64_t);
+	if (len & (size-1)) {
+		return 1;
+	}
+	while (len > 0) {
+		int64_t i = *(int64_t *)p;
+		printf("%llu", i);
+		if (len > size) {
+			len -= size;
+			p = (uintptr_t)p + size;
+			printf(" ");
+		} else {
+			break;
+		}
+	}
+	return 0;
+}
+#endif // __APPLE__
+
+/*
+ * These functions uses a presently undocumented interface to the kernel
+ * to walk the tree and get the type so it can print the value.
+ * This interface is under work and consideration, and should probably
+ * be killed with a big axe by the first person who can find the time.
+ * (be aware though, that the proper interface isn't as obvious as it
+ * may seem, there are various conflicting requirements.
+ */
+
+static int
+name2oid(char *name, int *oidp)
+{
+	int oid[2];
+	int i;
+	size_t j;
+
+#ifdef __APPLE__
+	// Support for CTL_USER
+	const char *user = names[CTL_USER].ctl_name;
+	j = strlen(user);
+	if (!strncmp(name, user, j)) {
+		oidp[0] = CTL_USER;
+		if (name[j] == '.') {
+			for (i = 1; i < user_names_count; ++i) {
+				if (!strcmp(&name[j+1], user_names[i].ctl_name)) {
+					oidp[1] = i;
+					return 2;
+				}
+			}
+			return -1;
+		} else if (name[j] == 0) {
+			return 1;
+		}
+		return -1;
+	}
+#endif
+
+	oid[0] = 0;
+	oid[1] = 3;
+
+	j = CTL_MAXNAME * sizeof(int);
+	i = sysctl(oid, 2, oidp, &j, name, strlen(name));
+	if (i < 0)
+		return (i);
+	j /= sizeof(int);
+	return (int)j;
+}
+
+static int
+oidfmt(int *oid, int len, char *fmt, u_int *kind)
+{
+	int qoid[CTL_MAXNAME+2];
+	u_char buf[BUFSIZ];
+	int i;
+	size_t j;
+
+	qoid[0] = 0;
+	qoid[1] = 4;
+	memcpy(qoid + 2, oid, len * sizeof(int));
+
+	j = sizeof(buf);
+	i = sysctl(qoid, len + 2, buf, &j, 0, 0);
+#ifdef __APPLE__
+	if (i && errno == ENOENT) {
+		// Support for CTL_USER
+		if (oid[0] == CTL_USER) {
+			if (len == 1) {
+				*kind = CTLTYPE_NODE;
+				return 0;
+			} else if (len == 2 && oid[1] < user_names_count) {
+				*kind = user_names[oid[1]].ctl_type;
+				return 0;
+			}
+		}
+		return 1;
+	}
+#endif
+	if (i)
+		err(1, "sysctl fmt %d %zu %d", i, j, errno);
+
+	if (kind)
+#ifdef __APPLE__
+		memcpy(kind, buf, sizeof(*kind));
+#else
+		*kind = *(u_int *)buf;
+#endif
+
+	if (fmt)
+		strcpy(fmt, (char *)(buf + sizeof(u_int)));
+
+#ifdef __APPLE__
+	// Map Darwin sysctl types to FreeBSD types.
+	// - 0 with "I" -> CTLTYPE_INT
+	// - 0 with "S," -> CTLTYPE_STRUCT
+	// - CTLTYPE_INT with "IU" -> CTLTYPE_UINT
+	// - CTLTYPE_INT with "L" -> CTLTYPE_LONG
+	// - CTLTYPE_QUAD -> CTLTYPE_S64
+	// - CTLTYPE_QUAD with "*U" -> CTLTYPE_U64
+	if (kind) {
+		switch (*kind & CTLTYPE) {
+			case 0:
+			case CTLTYPE_INT:
+				if (buf[sizeof(u_int)] == 'S') {
+					*kind = (*kind & ~CTLTYPE) | CTLTYPE_STRUCT;
+				} else if (buf[sizeof(u_int)] == 'I') {
+					*kind = (*kind & ~CTLTYPE) | CTLTYPE_INT;
+					if (buf[sizeof(u_int)+1] == 'U') {
+						*kind = (*kind & ~CTLTYPE) | CTLTYPE_UINT;
+					}
+				} else if (buf[sizeof(u_int)] == 'L') {
+					*kind = (*kind & ~CTLTYPE) | CTLTYPE_LONG;
+                    if (buf[sizeof(u_int)+1] == 'U') {
+                        *kind = (*kind & ~CTLTYPE) | CTLTYPE_ULONG;
+                    }
+				}
+				break;
+			case CTLTYPE_QUAD:
+				*kind = (*kind & ~CTLTYPE);
+				if (fmt && strchr(fmt, 'U')) {
+					*kind |= CTLTYPE_U64;
+				} else {
+					*kind |= CTLTYPE_S64;
+				}
+				break;
+		}
+	}
+#endif
+
+	return (0);
+}
+
+static int ctl_sign[CTLTYPE+1] = {
+	[CTLTYPE_INT] = 1,
+	[CTLTYPE_LONG] = 1,
+	[CTLTYPE_S64] = 1,
+};
+
+static int ctl_size[CTLTYPE+1] = {
+	[CTLTYPE_INT] = sizeof(int),
+	[CTLTYPE_UINT] = sizeof(u_int),
+	[CTLTYPE_LONG] = sizeof(long),
+	[CTLTYPE_ULONG] = sizeof(u_long),
+	[CTLTYPE_S64] = sizeof(int64_t),
+	[CTLTYPE_U64] = sizeof(int64_t),
+};
+
+/*
+ * This formats and outputs the value of one variable
+ *
+ * Returns zero if anything was actually output.
+ * Returns one if didn't know what to do with this.
+ * Return minus one if we had errors.
+ */
+static int
+#ifdef __APPLE__
+show_var(int *oid, int nlen, int show_masked)
+#else
+show_var(int *oid, int nlen)
+#endif
+{
+	u_char buf[BUFSIZ], *val, *oval, *p;
+	char name[BUFSIZ], *fmt;
+	const char *sep, *sep1;
+	int qoid[CTL_MAXNAME+2];
+	uintmax_t umv;
+	intmax_t mv;
+	int i, hexlen, sign, ctltype;
+	size_t intlen;
+	size_t j, len;
+	u_int kind;
+	int (*func)(int, void *);
+
+	/* Silence GCC. */
+	umv = mv = intlen = 0;
+
+	bzero(buf, BUFSIZ);
+	bzero(name, BUFSIZ);
+	qoid[0] = 0;
+	memcpy(qoid + 2, oid, nlen * sizeof(int));
+	fmt = (char *)buf;
+	oidfmt(oid, nlen, fmt, &kind);
+
+#ifdef __APPLE__
+	if (!show_masked && (kind & CTLFLAG_MASKED)) {
+		return (1);
+	}
+#endif
+
+#ifdef __APPLE__
+	// Support for CTL_USER
+	if (nlen >= 1 && oid[0] == CTL_USER) {
+		const char *user_name = "";
+		sep = "";
+		i = oid[1];
+		if (nlen == 2 && i > 0 && i < user_names_count) {
+			user_name = user_names[i].ctl_name;
+			sep = ".";
+		}
+		j = snprintf(name, sizeof(name), "%s%s%s",
+			     names[CTL_USER].ctl_name, sep, user_name);
+		i = 0;
+	} else {
+#endif
+	qoid[1] = 1;
+	j = sizeof(name);
+	i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
+	if (i || !j)
+		err(1, "sysctl name %d %zu %d", i, j, errno);
+#ifdef __APPLE__
+	}
+#endif
+
+	if (Nflag) {
+		printf("%s", name);
+		return (0);
+	}
+
+	if (eflag)
+		sep = "=";
+	else
+		sep = ": ";
+
+	if (dflag) {	/* just print description */
+		qoid[1] = 5;
+		j = sizeof(buf);
+		i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
+		if (!nflag)
+			printf("%s%s", name, sep);
+		printf("%s", buf);
+		return (0);
+	}
+	/* find an estimate of how much we need for this var */
+	j = 0;
+	i = sysctl(oid, nlen, 0, &j, 0, 0);
+	j += j; /* we want to be sure :-) */
+
+	val = oval = malloc(j + 1);
+	if (val == NULL) {
+		warnx("malloc failed");
+		return (1);
+	}
+	len = j;
+	i = sysctl(oid, nlen, val, &len, 0, 0);
+	if (i || !len) {
+		free(oval);
+		return (1);
+	}
+
+	if (bflag) {
+		fwrite(val, 1, len, stdout);
+		free(oval);
+		return (0);
+	}
+	val[len] = '\0';
+	p = val;
+	ctltype = (kind & CTLTYPE);
+	sign = ctl_sign[ctltype];
+	intlen = ctl_size[ctltype];
+
+	switch (ctltype) {
+	case CTLTYPE_STRING:
+		if (!nflag)
+			printf("%s%s", name, sep);
+		printf("%.*s", (int)len, p);
+		free(oval);
+		return (0);
+
+	case CTLTYPE_INT:
+	case CTLTYPE_UINT:
+	case CTLTYPE_LONG:
+	case CTLTYPE_ULONG:
+	case CTLTYPE_S64:
+	case CTLTYPE_U64:
+		if (!nflag)
+			printf("%s%s", name, sep);
+		hexlen = (int)(2 + (intlen * CHAR_BIT + 3) / 4);
+		sep1 = "";
+		while (len >= intlen) {
+			switch (kind & CTLTYPE) {
+			case CTLTYPE_INT:
+			case CTLTYPE_UINT:
+				umv = *(u_int *)(void *)p;
+				mv = *(int *)(void *)p;
+				break;
+			case CTLTYPE_LONG:
+			case CTLTYPE_ULONG:
+				umv = *(u_long *)(void *)p;
+				mv = *(long *)(void *)p;
+				break;
+			case CTLTYPE_S64:
+			case CTLTYPE_U64:
+				umv = *(uint64_t *)(void *)p;
+				mv = *(int64_t *)(void *)p;
+				break;
+			}
+			fputs(sep1, stdout);
+			if (xflag)
+				printf("%#0*jx", hexlen, umv);
+			else if (!sign)
+				printf(hflag ? "%'ju" : "%ju", umv);
+			else if (fmt[1] == 'K') {
+				if (mv < 0)
+					printf("%jd", mv);
+				else
+					printf("%.1fC", (mv - 2732.0) / 10);
+			} else
+				printf(hflag ? "%'jd" : "%jd", mv);
+			sep1 = " ";
+			len -= intlen;
+			p += intlen;
+		}
+		free(oval);
+		return (0);
+
+	case CTLTYPE_OPAQUE:
+		i = 0;
+		if (strcmp(fmt, "S,clockinfo") == 0)
+			func = S_clockinfo;
+		else if (strcmp(fmt, "S,timeval") == 0)
+			func = S_timeval;
+		else if (strcmp(fmt, "S,loadavg") == 0)
+			func = S_loadavg;
+#ifdef __APPLE__
+		else if (!strcmp(fmt, "S,xsw_usage"))
+			func = S_xswusage;
+		else if (!strcmp(fmt, "T,dev_t"))
+			func = T_dev_t;
+		else if (!strcmp(fmt, "Q"))
+			func = S_quads;
+#else // !__APPLE__
+		else if (strcmp(fmt, "S,vmtotal") == 0)
+			func = S_vmtotal;
+#endif // !__APPLE__
+		else
+			func = NULL;
+		if (func) {
+			if (!nflag)
+				printf("%s%s", name, sep);
+			i = (*func)((int)len, p);
+			free(oval);
+			return (i);
+		}
+		/* FALLTHROUGH */
+	default:
+		if (!oflag && !xflag) {
+			free(oval);
+			return (1);
+		}
+		if (!nflag)
+			printf("%s%s", name, sep);
+		printf("Format:%s Length:%zu Dump:0x", fmt, len);
+		while (len-- && (xflag || p < val + 16))
+			printf("%02x", *p++);
+		if (!xflag && len > 16)
+			printf("...");
+		free(oval);
+		return (0);
+	}
+	free(oval);
+	return (1);
+}
+
+#ifdef __APPLE__
+// Support for CTL_USER
+static void
+sysctl_all_user(int *oid, int len)
+{
+	int i, j;
+	if (len > 1 || (len == 1 && oid[0] != CTL_USER)) {
+		return;
+	}
+	for (i = 0; i < user_names_count; ++i) {
+		int oid[2] = { CTL_USER, i };
+		j = show_var(oid, 2, 0);
+		if (!j && !bflag) {
+			putchar('\n');
+		}
+	}
+}
+#endif
+
+static int
+sysctl_all(int *oid, int len)
+{
+#ifdef __APPLE__
+#endif
+
+	int name1[22], name2[22];
+	int i, j;
+	size_t l1, l2;
+
+#ifdef __APPLE__
+	sysctl_all_user(oid, len);
+#endif
+
+	name1[0] = 0;
+	name1[1] = 2;
+	l1 = 2;
+	if (len) {
+		memcpy(name1+2, oid, len * sizeof(int));
+		l1 += len;
+	} else {
+		name1[2] = 1;
+		l1++;
+	}
+	for (;;) {
+		l2 = sizeof(name2);
+		j = sysctl(name1, (u_int)l1, name2, &l2, 0, 0);
+		if (j < 0) {
+			if (errno == ENOENT)
+				return (0);
+			else
+				err(1, "sysctl(getnext) %d %zu", j, l2);
+		}
+
+		l2 /= sizeof(int);
+
+		if (len < 0 || l2 < (unsigned int)len)
+			return (0);
+
+		for (i = 0; i < len; i++)
+			if (name2[i] != oid[i])
+				return (0);
+
+#ifdef __APPLE__
+		i = show_var(name2, (u_int)l2, 0);
+#else
+		i = show_var(name2, (u_int)l2);
+#endif
+		if (!i && !bflag)
+			putchar('\n');
+
+		memcpy(name1+2, name2, l2 * sizeof(int));
+		l1 = 2 + l2;
+	}
+}
diff --git a/system_cmds/sysctl.tproj/sysctl.conf.5 b/system_cmds/sysctl.tproj/sysctl.conf.5
new file mode 100644
index 0000000..709c601
--- /dev/null
+++ b/system_cmds/sysctl.tproj/sysctl.conf.5
@@ -0,0 +1,75 @@
+.\" Modified August 3, 2007
+.\" Portions Copyright (c) 2007 Apple Inc.
+.\" Copyright (c) 1999 Chris Costello <chris@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD: src/share/man/man5/sysctl.conf.5,v 1.16 2004/07/03 18:29:23 ru Exp $
+.\"
+.Dd August 3, 2007 
+.Dt SYSCTL.CONF 5
+.Os
+.Sh NAME
+.Nm sysctl.conf
+.Nd kernel state defaults
+.Sh DESCRIPTION
+The
+.Pa /etc/sysctl.conf
+file is read in when the system goes into multi-user mode to set default
+settings for the kernel.
+The
+.Pa /etc/sysctl.conf
+is in the format of the
+.Xr sysctl 8
+command, i.e.\&
+.Bd -literal -offset indent
+sysctl_mib=value
+.Ed
+.Pp
+Comments are denoted by a
+.Dq #
+at the beginning of a line.
+.Sh FILES
+.Bl -tag -width /etc/sysctl.conf -compact
+.It Pa /etc/sysctl.conf
+Initial settings for
+.Xr sysctl 8 .
+.El
+.Sh EXAMPLES
+To disable coredumps, you may use a configuration like:
+.Bd -literal -offset indent
+# Disable coredumps.
+kern.coredump=0	
+.Ed
+.Sh SEE ALSO
+.Xr sysctl 8
+.Sh HISTORY
+The
+.Nm
+file appeared in
+.Fx 4.0 .
+.Sh BUGS
+If loadable kernel modules are used to introduce additional kernel
+functionality and sysctls to manage that functionality,
+.Nm
+may be processed too early in the boot process to set those sysctls.