86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* $NetBSD: panic.c,v 1.1 2011/02/18 01:07:20 jmcneill Exp $ */
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/*
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* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: panic.c,v 1.1 2011/02/18 01:07:20 jmcneill Exp $");
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#include <sys/module.h>
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MODULE(MODULE_CLASS_MISC, panic, NULL);
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static void
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panic_dopanic(void)
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{
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/* just call panic */
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panic("oops");
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}
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static void
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panic_donullptr(void)
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{
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/* null ptr dereference */
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*(int *)NULL = 1;
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}
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static const struct {
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const char *name;
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void (*func)(void);
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} panic_howto[] = {
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{ "panic", panic_dopanic },
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{ "nullptr", panic_donullptr },
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};
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static int
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panic_modcmd(modcmd_t cmd, void *opaque)
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{
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if (cmd == MODULE_CMD_INIT) {
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prop_dictionary_t props = opaque;
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const char *how = NULL;
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unsigned int i;
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if (props)
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prop_dictionary_get_cstring_nocopy(props, "how", &how);
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if (how == NULL)
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how = "panic";
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for (i = 0; i < __arraycount(panic_howto); i++) {
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if (strcmp(how, panic_howto[i].name) == 0) {
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panic_howto[i].func();
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break;
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}
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}
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if (i == __arraycount(panic_howto))
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printf("%s: no how '%s'\n", __func__, how);
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else
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printf("%s: how '%s' didn't panic?\n", __func__, how);
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return EINVAL;
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}
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return ENOTTY;
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}
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