1.\" $NetBSD: panic.9,v 1.2 1996/10/09 17:20:04 explorer Exp $ 2.\" 3.\" Copyright (c) 1996 Michael Graff. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by Michael Graff 17.\" for the NetBSD Project. 18.\" 3. The name of the author may not be used to endorse or promote products 19.\" derived from this software without specific prior written permission 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31.\" 32.\" $FreeBSD$ 33.\" 34.Dd August 11, 1995 35.Dt PANIC 9 36.Os 37.Sh NAME 38.Nm panic 39.Nd bring down system on fatal error 40.Sh SYNOPSIS 41.In sys/types.h 42.In sys/systm.h 43.Ft void 44.Fn panic "const char *fmt" ... 45.Sh DESCRIPTION 46The 47.Fn panic 48function terminates the running system. 49The message 50.Fa fmt 51is a 52.Xr printf 3 53style format string. 54The message is printed to the console and the location 55.Fa panicstr 56is set to the address of the message text for retrieval from the OS 57core dump. 58.Pp 59If the kernel debugger is installed control is passed to it, otherwise 60an attempt to save a core dump of the OS to a configured dump device 61is made. 62.Pp 63If 64.Fn panic 65is called twice (from the disk sync routines, for example) the system is 66rebooted without syncing the disks. 67.Sh RETURN VALUES 68The 69.Fn panic 70function does not return. 71