/*      $NetBSD: k_helper2.c,v 1.2 2010/11/03 16:10:23 christos Exp $ */
/*
* Copyright (c) 2010 The NetBSD Foundation, Inc.
* 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 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: k_helper2.c,v 1.2 2010/11/03 16:10:23 christos Exp $");

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

#include <prop/proplib.h>

MODULE(MODULE_CLASS_MISC, k_helper2, NULL);

/* --------------------------------------------------------------------- */
/* Sysctl interface to query information about the module.               */
/* --------------------------------------------------------------------- */

/* TODO: Change the integer variables below that represent booleans to
* bools, once sysctl(8) supports CTLTYPE_BOOL nodes. */

static struct sysctllog *clogp;
static int present = 1;

#define K_HELPER2 0x23456781
#define K_HELPER_PRESENT 0

SYSCTL_SETUP(sysctl_k_helper2_setup, "sysctl k_helper subtree setup")
{

       sysctl_createv(clog, 0, NULL, NULL,
                      CTLFLAG_PERMANENT,
                      CTLTYPE_NODE, "k_helper2", NULL,
                      NULL, 0, NULL, 0,
                      CTL_VENDOR, K_HELPER2, CTL_EOL);

       sysctl_createv(clog, 0, NULL, NULL,
                      CTLFLAG_PERMANENT,
                      CTLTYPE_INT, "present",
                      SYSCTL_DESCR("Whether the module was loaded or not"),
                      NULL, 0, &present, 0,
                      CTL_VENDOR, K_HELPER2, K_HELPER_PRESENT, CTL_EOL);
}

/* --------------------------------------------------------------------- */
/* Module management.                                                    */
/* --------------------------------------------------------------------- */

static
int
k_helper2_init(prop_dictionary_t props)
{
       sysctl_k_helper2_setup(&clogp);

       return 0;
}

static
int
k_helper2_fini(void *arg)
{

       sysctl_teardown(&clogp);

       return 0;
}

static
int
k_helper2_modcmd(modcmd_t cmd, void *arg)
{
       int ret;

       switch (cmd) {
       case MODULE_CMD_INIT:
               ret = k_helper2_init(arg);
               break;

       case MODULE_CMD_FINI:
               ret = k_helper2_fini(arg);
               break;

       case MODULE_CMD_STAT:
       default:
               ret = ENOTTY;
       }

       return ret;
}