f924bf61f4
DTrace panic() action. Differential Revision: https://reviews.freebsd.org/D2349 Reviewed by: avg MFC after: 2 weeks Sponsored by: EMC / Isilon Storage Division
75 lines
2.6 KiB
Groff
75 lines
2.6 KiB
Groff
.\" $NetBSD: panic.9,v 1.2 1996/10/09 17:20:04 explorer Exp $
|
|
.\"
|
|
.\" Copyright (c) 1996 Michael Graff.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by Michael Graff
|
|
.\" for the NetBSD Project.
|
|
.\" 3. The name of the author may not be used to endorse or promote products
|
|
.\" derived from this software without specific prior written permission
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd April 23, 2015
|
|
.Dt PANIC 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm panic
|
|
.Nd bring down system on fatal error
|
|
.Sh SYNOPSIS
|
|
.In sys/types.h
|
|
.In sys/systm.h
|
|
.Ft void
|
|
.Fn panic "const char *fmt" ...
|
|
.Ft void
|
|
.Fn vpanic "const char *fmt" "va_list ap"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn panic
|
|
and
|
|
.Fn vpanic
|
|
functions terminate the running system.
|
|
The message
|
|
.Fa fmt
|
|
is a
|
|
.Xr printf 3
|
|
style format string.
|
|
The message is printed to the console and the location
|
|
.Fa panicstr
|
|
is set to the address of the message text for retrieval from the OS
|
|
core dump.
|
|
.Pp
|
|
If the kernel debugger is installed control is passed to it, otherwise
|
|
an attempt to save a core dump of the OS to a configured dump device
|
|
is made.
|
|
.Pp
|
|
If
|
|
.Fn panic
|
|
is called twice (from the disk sync routines, for example) the system is
|
|
rebooted without syncing the disks.
|
|
.Sh RETURN VALUES
|
|
The
|
|
.Fn panic
|
|
function does not return.
|