panic.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: panic.c,v 1.1.2.2 2011/03/05 15:10:46 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /* 4 1.1.2.2 bouyer * Copyright (c) 2011 Jared D. McNeill <jmcneill (at) invisible.ca> 5 1.1.2.2 bouyer * All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 9 1.1.2.2 bouyer * are met: 10 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 bouyer * 2. The name of the author may not be used to endorse or promote products 13 1.1.2.2 bouyer * derived from this software without specific prior written permission. 14 1.1.2.2 bouyer * 15 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 1.1.2.2 bouyer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 1.1.2.2 bouyer * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 1.1.2.2 bouyer * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 1.1.2.2 bouyer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 1.1.2.2 bouyer * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 1.1.2.2 bouyer * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 1.1.2.2 bouyer * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 1.1.2.2 bouyer * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 1.1.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 1.1.2.2 bouyer * SUCH DAMAGE. 26 1.1.2.2 bouyer */ 27 1.1.2.2 bouyer 28 1.1.2.2 bouyer #include <sys/cdefs.h> 29 1.1.2.2 bouyer __KERNEL_RCSID(0, "$NetBSD: panic.c,v 1.1.2.2 2011/03/05 15:10:46 bouyer Exp $"); 30 1.1.2.2 bouyer 31 1.1.2.2 bouyer #include <sys/module.h> 32 1.1.2.2 bouyer 33 1.1.2.2 bouyer MODULE(MODULE_CLASS_MISC, panic, NULL); 34 1.1.2.2 bouyer 35 1.1.2.2 bouyer static void 36 1.1.2.2 bouyer panic_dopanic(void) 37 1.1.2.2 bouyer { 38 1.1.2.2 bouyer /* just call panic */ 39 1.1.2.2 bouyer panic("oops"); 40 1.1.2.2 bouyer } 41 1.1.2.2 bouyer 42 1.1.2.2 bouyer static void 43 1.1.2.2 bouyer panic_donullptr(void) 44 1.1.2.2 bouyer { 45 1.1.2.2 bouyer /* null ptr dereference */ 46 1.1.2.2 bouyer *(int *)NULL = 1; 47 1.1.2.2 bouyer } 48 1.1.2.2 bouyer 49 1.1.2.2 bouyer static const struct { 50 1.1.2.2 bouyer const char *name; 51 1.1.2.2 bouyer void (*func)(void); 52 1.1.2.2 bouyer } panic_howto[] = { 53 1.1.2.2 bouyer { "panic", panic_dopanic }, 54 1.1.2.2 bouyer { "nullptr", panic_donullptr }, 55 1.1.2.2 bouyer }; 56 1.1.2.2 bouyer 57 1.1.2.2 bouyer static int 58 1.1.2.2 bouyer panic_modcmd(modcmd_t cmd, void *opaque) 59 1.1.2.2 bouyer { 60 1.1.2.2 bouyer if (cmd == MODULE_CMD_INIT) { 61 1.1.2.2 bouyer prop_dictionary_t props = opaque; 62 1.1.2.2 bouyer const char *how = NULL; 63 1.1.2.2 bouyer unsigned int i; 64 1.1.2.2 bouyer 65 1.1.2.2 bouyer if (props) 66 1.1.2.2 bouyer prop_dictionary_get_cstring_nocopy(props, "how", &how); 67 1.1.2.2 bouyer if (how == NULL) 68 1.1.2.2 bouyer how = "panic"; 69 1.1.2.2 bouyer 70 1.1.2.2 bouyer for (i = 0; i < __arraycount(panic_howto); i++) { 71 1.1.2.2 bouyer if (strcmp(how, panic_howto[i].name) == 0) { 72 1.1.2.2 bouyer panic_howto[i].func(); 73 1.1.2.2 bouyer break; 74 1.1.2.2 bouyer } 75 1.1.2.2 bouyer } 76 1.1.2.2 bouyer if (i == __arraycount(panic_howto)) 77 1.1.2.2 bouyer printf("%s: no how '%s'\n", __func__, how); 78 1.1.2.2 bouyer else 79 1.1.2.2 bouyer printf("%s: how '%s' didn't panic?\n", __func__, how); 80 1.1.2.2 bouyer 81 1.1.2.2 bouyer return EINVAL; 82 1.1.2.2 bouyer } 83 1.1.2.2 bouyer 84 1.1.2.2 bouyer return ENOTTY; 85 1.1.2.2 bouyer } 86
Indexes created Wed Oct 01 19:09:53 GMT 2025