xref: /src/sys/kern/init_sysctl_base.c

/*	$NetBSD: init_sysctl_base.c,v 1.2 2014/02/25 01:02:42 justin Exp $ */

/*-
 * Copyright (c) 2003, 2007, 2008, 2009 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Andrew Brown, and by Andrew Doran.
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
__KERNEL_RCSID(0, "$NetBSD: init_sysctl_base.c,v 1.2 2014/02/25 01:02:42 justin Exp $");

#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/kernel.h>
#include <sys/disklabel.h>

static int sysctl_setlen(SYSCTLFN_PROTO);

/*
 * sets up the base nodes...
 */
SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup")
{

	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "kern",
		       SYSCTL_DESCR("High kernel"),
		       NULL, 0, NULL, 0,
		       CTL_KERN, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "vm",
		       SYSCTL_DESCR("Virtual memory"),
		       NULL, 0, NULL, 0,
		       CTL_VM, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "vfs",
		       SYSCTL_DESCR("Filesystem"),
		       NULL, 0, NULL, 0,
		       CTL_VFS, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "net",
		       SYSCTL_DESCR("Networking"),
		       NULL, 0, NULL, 0,
		       CTL_NET, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "debug",
		       SYSCTL_DESCR("Debugging"),
		       NULL, 0, NULL, 0,
		       CTL_DEBUG, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "hw",
		       SYSCTL_DESCR("Generic CPU, I/O"),
		       NULL, 0, NULL, 0,
		       CTL_HW, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "machdep",
		       SYSCTL_DESCR("Machine dependent"),
		       NULL, 0, NULL, 0,
		       CTL_MACHDEP, CTL_EOL);
	/*
	 * this node is inserted so that the sysctl nodes in libc can
	 * operate.
	 */
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "user",
		       SYSCTL_DESCR("User-level"),
		       NULL, 0, NULL, 0,
		       CTL_USER, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "ddb",
		       SYSCTL_DESCR("In-kernel debugger"),
		       NULL, 0, NULL, 0,
		       CTL_DDB, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "proc",
		       SYSCTL_DESCR("Per-process"),
		       NULL, 0, NULL, 0,
		       CTL_PROC, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
		       CTLTYPE_NODE, "vendor",
		       SYSCTL_DESCR("Vendor specific"),
		       NULL, 0, NULL, 0,
		       CTL_VENDOR, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "emul",
		       SYSCTL_DESCR("Emulation settings"),
		       NULL, 0, NULL, 0,
		       CTL_EMUL, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "security",
		       SYSCTL_DESCR("Security"),
		       NULL, 0, NULL, 0,
		       CTL_SECURITY, CTL_EOL);
}

/*
 * now add some nodes which both rump kernel and standard
 * NetBSD both need, as rump cannot use sys/kern/init_sysctl.c
 */
SYSCTL_SETUP(sysctl_kernbase_setup, "sysctl kern subtree base setup")
{
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_NODE, "kern", NULL,
		       NULL, 0, NULL, 0,
		       CTL_KERN, CTL_EOL);

	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_STRING, "ostype",
		       SYSCTL_DESCR("Operating system type"),
		       NULL, 0, __UNCONST(&ostype), 0,
		       CTL_KERN, KERN_OSTYPE, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_STRING, "osrelease",
		       SYSCTL_DESCR("Operating system release"),
		       NULL, 0, __UNCONST(&osrelease), 0,
		       CTL_KERN, KERN_OSRELEASE, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
		       CTLTYPE_INT, "osrevision",
		       SYSCTL_DESCR("Operating system revision"),
		       NULL, __NetBSD_Version__, NULL, 0,
		       CTL_KERN, KERN_OSREV, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT,
		       CTLTYPE_STRING, "version",
		       SYSCTL_DESCR("Kernel version"),
		       NULL, 0, __UNCONST(&version), 0,
		       CTL_KERN, KERN_VERSION, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
		       CTLTYPE_STRING, "hostname",
		       SYSCTL_DESCR("System hostname"),
		       sysctl_setlen, 0, hostname, MAXHOSTNAMELEN,
		       CTL_KERN, KERN_HOSTNAME, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
		       CTLTYPE_STRING, "domainname",
		       SYSCTL_DESCR("YP domain name"),
		       sysctl_setlen, 0, domainname, MAXHOSTNAMELEN,
		       CTL_KERN, KERN_DOMAINNAME, CTL_EOL);
	sysctl_createv(clog, 0, NULL, NULL,
		       CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
		       CTLTYPE_INT, "rawpartition",
		       SYSCTL_DESCR("Raw partition of a disk"),
		       NULL, RAW_PART, NULL, 0,
		       CTL_KERN, KERN_RAWPARTITION, CTL_EOL);
}

/*
 * sysctl helper function for kern.hostname and kern.domainnname.
 * resets the relevant recorded length when the underlying name is
 * changed.
 */
static int
sysctl_setlen(SYSCTLFN_ARGS)
{
	int error;

	error = sysctl_lookup(SYSCTLFN_CALL(rnode));
	if (error || newp == NULL)
		return (error);

	switch (rnode->sysctl_num) {
	case KERN_HOSTNAME:
		hostnamelen = strlen((const char*)rnode->sysctl_data);
		break;
	case KERN_DOMAINNAME:
		domainnamelen = strlen((const char*)rnode->sysctl_data);
		break;
	}

	return (0);
}