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NetBSD/sys/kern/init_sysctl_base.c
pooka 4f6fb3bf35 Ensure that the top level sysctl nodes (kern, vfs, net, ...) exist before 
the sysctl link sets are processed, and remove redundancy.

Shaves >13kB off of an amd64 GENERIC, not to mention >1k duplicate
lines of code.
2014-02-25 18:30:08 +00:00

209 lines
6.8 KiB
C
Raw Blame History

/* $NetBSD: init_sysctl_base.c,v 1.3 2014/02/25 18:30:11 pooka 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 1.3 2014/02/25 18:30:11 pooka 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...
*/
void
sysctl_basenode_init(void)
{
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "kern",
SYSCTL_DESCR("High kernel"),
NULL, 0, NULL, 0,
CTL_KERN, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "vm",
SYSCTL_DESCR("Virtual memory"),
NULL, 0, NULL, 0,
CTL_VM, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "vfs",
SYSCTL_DESCR("Filesystem"),
NULL, 0, NULL, 0,
CTL_VFS, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "net",
SYSCTL_DESCR("Networking"),
NULL, 0, NULL, 0,
CTL_NET, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "debug",
SYSCTL_DESCR("Debugging"),
NULL, 0, NULL, 0,
CTL_DEBUG, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "hw",
SYSCTL_DESCR("Generic CPU, I/O"),
NULL, 0, NULL, 0,
CTL_HW, CTL_EOL);
sysctl_createv(NULL, 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(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "user",
SYSCTL_DESCR("User-level"),
NULL, 0, NULL, 0,
CTL_USER, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "ddb",
SYSCTL_DESCR("In-kernel debugger"),
NULL, 0, NULL, 0,
CTL_DDB, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "proc",
SYSCTL_DESCR("Per-process"),
NULL, 0, NULL, 0,
CTL_PROC, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_NODE, "vendor",
SYSCTL_DESCR("Vendor specific"),
NULL, 0, NULL, 0,
CTL_VENDOR, CTL_EOL);
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "emul",
SYSCTL_DESCR("Emulation settings"),
NULL, 0, NULL, 0,
CTL_EMUL, CTL_EOL);
sysctl_createv(NULL, 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_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);
}
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