k_helper2.c revision 272343
1272343Sngie/* $NetBSD: k_helper2.c,v 1.2 2010/11/03 16:10:23 christos Exp $ */ 2272343Sngie/* 3272343Sngie * Copyright (c) 2010 The NetBSD Foundation, Inc. 4272343Sngie * All rights reserved. 5272343Sngie * 6272343Sngie * Redistribution and use in source and binary forms, with or without 7272343Sngie * modification, are permitted provided that the following conditions 8272343Sngie * are met: 9272343Sngie * 1. Redistributions of source code must retain the above copyright 10272343Sngie * notice, this list of conditions and the following disclaimer. 11272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 12272343Sngie * notice, this list of conditions and the following disclaimer in the 13272343Sngie * documentation and/or other materials provided with the distribution. 14272343Sngie * 15272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 16272343Sngie * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 17272343Sngie * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18272343Sngie * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19272343Sngie * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 20272343Sngie * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21272343Sngie * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 22272343Sngie * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 24272343Sngie * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 25272343Sngie * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 26272343Sngie * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27272343Sngie */ 28272343Sngie 29272343Sngie#include <sys/cdefs.h> 30272343Sngie__KERNEL_RCSID(0, "$NetBSD: k_helper2.c,v 1.2 2010/11/03 16:10:23 christos Exp $"); 31272343Sngie 32272343Sngie#include <sys/param.h> 33272343Sngie#include <sys/kernel.h> 34272343Sngie#include <sys/module.h> 35272343Sngie#include <sys/sysctl.h> 36272343Sngie 37272343Sngie#include <prop/proplib.h> 38272343Sngie 39272343SngieMODULE(MODULE_CLASS_MISC, k_helper2, NULL); 40272343Sngie 41272343Sngie/* --------------------------------------------------------------------- */ 42272343Sngie/* Sysctl interface to query information about the module. */ 43272343Sngie/* --------------------------------------------------------------------- */ 44272343Sngie 45272343Sngie/* TODO: Change the integer variables below that represent booleans to 46272343Sngie * bools, once sysctl(8) supports CTLTYPE_BOOL nodes. */ 47272343Sngie 48272343Sngiestatic struct sysctllog *clogp; 49272343Sngiestatic int present = 1; 50272343Sngie 51272343Sngie#define K_HELPER2 0x23456781 52272343Sngie#define K_HELPER_PRESENT 0 53272343Sngie 54272343SngieSYSCTL_SETUP(sysctl_k_helper2_setup, "sysctl k_helper subtree setup") 55272343Sngie{ 56272343Sngie 57272343Sngie sysctl_createv(clog, 0, NULL, NULL, 58272343Sngie CTLFLAG_PERMANENT, 59272343Sngie CTLTYPE_NODE, "k_helper2", NULL, 60272343Sngie NULL, 0, NULL, 0, 61272343Sngie CTL_VENDOR, K_HELPER2, CTL_EOL); 62272343Sngie 63272343Sngie sysctl_createv(clog, 0, NULL, NULL, 64272343Sngie CTLFLAG_PERMANENT, 65272343Sngie CTLTYPE_INT, "present", 66272343Sngie SYSCTL_DESCR("Whether the module was loaded or not"), 67272343Sngie NULL, 0, &present, 0, 68272343Sngie CTL_VENDOR, K_HELPER2, K_HELPER_PRESENT, CTL_EOL); 69272343Sngie} 70272343Sngie 71272343Sngie/* --------------------------------------------------------------------- */ 72272343Sngie/* Module management. */ 73272343Sngie/* --------------------------------------------------------------------- */ 74272343Sngie 75272343Sngiestatic 76272343Sngieint 77272343Sngiek_helper2_init(prop_dictionary_t props) 78272343Sngie{ 79272343Sngie sysctl_k_helper2_setup(&clogp); 80272343Sngie 81272343Sngie return 0; 82272343Sngie} 83272343Sngie 84272343Sngiestatic 85272343Sngieint 86272343Sngiek_helper2_fini(void *arg) 87272343Sngie{ 88272343Sngie 89272343Sngie sysctl_teardown(&clogp); 90272343Sngie 91272343Sngie return 0; 92272343Sngie} 93272343Sngie 94272343Sngiestatic 95272343Sngieint 96272343Sngiek_helper2_modcmd(modcmd_t cmd, void *arg) 97272343Sngie{ 98272343Sngie int ret; 99272343Sngie 100272343Sngie switch (cmd) { 101272343Sngie case MODULE_CMD_INIT: 102272343Sngie ret = k_helper2_init(arg); 103272343Sngie break; 104272343Sngie 105272343Sngie case MODULE_CMD_FINI: 106272343Sngie ret = k_helper2_fini(arg); 107272343Sngie break; 108272343Sngie 109272343Sngie case MODULE_CMD_STAT: 110272343Sngie default: 111272343Sngie ret = ENOTTY; 112272343Sngie } 113272343Sngie 114272343Sngie return ret; 115272343Sngie} 116