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/share/man/man9/panic.9

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 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
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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.