Add crash(8), a utility to diagnose kernel crashes. This is basically
ddb running on crash dumps, but with two notable changes: - Breakpoints, watches, etc are obviously never going to work so they are not handled. - You can pipe output to the shell, e.g. ps | grep foo Items remaining to be done: - Port it to architectures other than i386. This isn't difficult, just a case of making db_disasm.c/db_trace.c or their equivalent compile and work. - Make more of the "show" commands work, e.g "show uvmexp".
This commit is contained in:
ad
parent
cd6b1c8f08
commit
101a9782a2
@ -1,4 +1,4 @@
|
||||
# $NetBSD: mi,v 1.798 2009/03/03 06:01:56 mrg Exp $
|
||||
# $NetBSD: mi,v 1.799 2009/03/07 22:08:07 ad Exp $
|
||||
#
|
||||
# Note: Don't delete entries from here - mark them as "obsolete" instead,
|
||||
# unless otherwise stated below.
|
||||
@ -1349,6 +1349,7 @@
|
||||
./usr/sbin/chrtbl base-sysutil-bin
|
||||
./usr/sbin/cnwctl base-netutil-bin
|
||||
./usr/sbin/cpuctl base-sysutil-bin
|
||||
./usr/sbin/crash base-sysutil-bin
|
||||
./usr/sbin/cron base-cron-bin
|
||||
./usr/sbin/daicctl base-isdn-bin
|
||||
./usr/sbin/dbsym base-sysutil-bin bfd
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
# $NetBSD: mi,v 1.1237 2009/03/02 19:22:15 christos Exp $
|
||||
# $NetBSD: mi,v 1.1238 2009/03/07 22:08:07 ad Exp $
|
||||
#
|
||||
# Note: don't delete entries from here - mark them as "obsolete" instead.
|
||||
#
|
||||
@ -3280,6 +3280,7 @@
|
||||
./usr/libdata/debug/usr/sbin/chrtbl.debug comp-sysutil-debug debug
|
||||
./usr/libdata/debug/usr/sbin/cnwctl.debug comp-netutil-debug debug
|
||||
./usr/libdata/debug/usr/sbin/cpuctl.debug comp-sysutil-debug debug
|
||||
./usr/libdata/debug/usr/sbin/crash.debug comp-sysutil-debug debug
|
||||
./usr/libdata/debug/usr/sbin/cron.debug comp-cron-debug debug
|
||||
./usr/libdata/debug/usr/sbin/daicctl.debug comp-isdn-debug debug
|
||||
./usr/libdata/debug/usr/sbin/dbsym.debug comp-sysutil-debug bfd,debug
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
# $NetBSD: mi,v 1.1127 2009/02/27 03:13:55 kenh Exp $
|
||||
# $NetBSD: mi,v 1.1128 2009/03/07 22:08:07 ad Exp $
|
||||
#
|
||||
# Note: don't delete entries from here - mark them as "obsolete" instead.
|
||||
#
|
||||
@ -2003,6 +2003,7 @@
|
||||
./usr/share/man/cat8/compat_xenix.0 man-sys-catman .cat
|
||||
./usr/share/man/cat8/comsat.0 man-man-catman .cat
|
||||
./usr/share/man/cat8/cpuctl.0 man-sysutil-catman .cat
|
||||
./usr/share/man/cat8/crash.0 man-sysutil-catman .cat
|
||||
./usr/share/man/cat8/cron.0 man-cron-catman .cat
|
||||
./usr/share/man/cat8/dbsym.0 man-sysutil-catman bfd,.cat
|
||||
./usr/share/man/cat8/defer.0 man-postfix-catman postfix,.cat
|
||||
@ -4446,6 +4447,7 @@
|
||||
./usr/share/man/html8/compat_xenix.html man-sys-htmlman html
|
||||
./usr/share/man/html8/comsat.html man-man-htmlman html
|
||||
./usr/share/man/html8/cpuctl.html man-sysutil-htmlman html
|
||||
./usr/share/man/html8/crash.html man-sysutil-htmlman html
|
||||
./usr/share/man/html8/cron.html man-cron-htmlman html
|
||||
./usr/share/man/html8/dbsym.html man-sysutil-htmlman bfd,html
|
||||
./usr/share/man/html8/defer.html man-postfix-htmlman postfix,html
|
||||
@ -6948,6 +6950,7 @@
|
||||
./usr/share/man/man8/compat_xenix.8 man-sys-man .man
|
||||
./usr/share/man/man8/comsat.8 man-man-man .man
|
||||
./usr/share/man/man8/cpuctl.8 man-sysutil-man .man
|
||||
./usr/share/man/man8/crash.8 man-crash-man .man
|
||||
./usr/share/man/man8/cron.8 man-cron-man .man
|
||||
./usr/share/man/man8/dbsym.8 man-sysutil-man bfd,.man
|
||||
./usr/share/man/man8/defer.8 man-postfix-man postfix,.man
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
.\" $NetBSD: savecore.8,v 1.33 2004/10/21 10:13:00 dsainty Exp $
|
||||
.\" $NetBSD: savecore.8,v 1.34 2009/03/07 22:08:08 ad Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 1980, 1991, 1993
|
||||
.\" The Regents of the University of California. All rights reserved.
|
||||
@ -29,7 +29,7 @@
|
||||
.\"
|
||||
.\" @(#)savecore.8 8.1 (Berkeley) 6/5/93
|
||||
.\"
|
||||
.Dd October 16, 2004
|
||||
.Dd March 3, 2009
|
||||
.Dt SAVECORE 8
|
||||
.Os
|
||||
.Sh NAME
|
||||
@ -69,6 +69,7 @@ the system log.
|
||||
.Pp
|
||||
The kernel and core file can then be analyzed using various tools,
|
||||
including
|
||||
.Xr crash 8 ,
|
||||
.Xr dmesg 8 ,
|
||||
.Xr fstat 1 ,
|
||||
.Xr gdb 1 ,
|
||||
@ -79,8 +80,9 @@ and
|
||||
.Xr pstat 8 ,
|
||||
to attempt to deduce the cause of the crash.
|
||||
.Pp
|
||||
Crashes are usually the result of kernel bugs; if this is suspected, a
|
||||
full bug report should be filed using
|
||||
Crashes are usually the result of hardware faults or kernel bugs.
|
||||
If a kernel bug is suspected, a full bug report should be filed at
|
||||
http://www.netbsd.org/, or using
|
||||
.Xr send-pr 1 ,
|
||||
containing as much information as possible about the circumstances of
|
||||
the crash.
|
||||
@ -181,7 +183,7 @@ will ignore it.
|
||||
.Xr netstat 1 ,
|
||||
.Xr ps 1 ,
|
||||
.Xr send-pr 1 ,
|
||||
.Xr secure_path 3 ,
|
||||
.Xr crash 8 ,
|
||||
.Xr dmesg 8 ,
|
||||
.Xr iostat 8 ,
|
||||
.Xr pstat 8 ,
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
.\" $NetBSD: ddb.4,v 1.123 2009/02/04 20:45:17 wiz Exp $
|
||||
.\" $NetBSD: ddb.4,v 1.124 2009/03/07 22:08:08 ad Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 1997 - 2009 The NetBSD Foundation, Inc.
|
||||
.\" All rights reserved.
|
||||
@ -56,7 +56,7 @@
|
||||
.\" any improvements or extensions that they make and grant Carnegie Mellon
|
||||
.\" the rights to redistribute these changes.
|
||||
.\"
|
||||
.Dd February 2, 2009
|
||||
.Dd March 7, 2009
|
||||
.Dt DDB 4
|
||||
.Os
|
||||
.Sh NAME
|
||||
@ -1386,6 +1386,7 @@ and modifiers as described above.
|
||||
.Sh SEE ALSO
|
||||
.Xr reboot 2 ,
|
||||
.Xr options 4 ,
|
||||
.Xr crash 8 ,
|
||||
.Xr reboot 8 ,
|
||||
.Xr sysctl 8 ,
|
||||
.Xr cnmagic 9
|
||||
|
||||
@ -1,11 +1,11 @@
|
||||
# $NetBSD: Makefile,v 1.238 2008/11/12 13:17:27 pooka Exp $
|
||||
# $NetBSD: Makefile,v 1.239 2009/03/07 22:08:08 ad Exp $
|
||||
# from: @(#)Makefile 5.20 (Berkeley) 6/12/93
|
||||
|
||||
.include <bsd.own.mk>
|
||||
|
||||
SUBDIR= ac accton acpitools altq apm apmd arp bad144 bind bootp \
|
||||
btattach btconfig btdevctl bthcid btpand catman \
|
||||
chown chroot chrtbl cnwctl cpuctl cron dev_mkdb \
|
||||
chown chroot chrtbl cnwctl cpuctl crash cron dev_mkdb \
|
||||
dhcp diskpart dumpfs dumplfs edquota eeprom \
|
||||
envstat eshconfig etcupdate extattrctl fssconfig fusermount fwctl \
|
||||
gpioctl grfconfig grfinfo gspa hilinfo ifwatchd inetd installboot \
|
||||
|
||||
59
usr.sbin/crash/Makefile
Normal file
59
usr.sbin/crash/Makefile
Normal file
@ -0,0 +1,59 @@
|
||||
# $NetBSD: Makefile,v 1.1 2009/03/07 22:08:08 ad Exp $
|
||||
|
||||
PROG= crash
|
||||
MAN= crash.8
|
||||
|
||||
WARNS= 3
|
||||
|
||||
LDADD+= -lkvm -ledit -ltermcap
|
||||
DPADD+= ${LIBKVM} ${LIBEDIT} ${LIBTERMCAP}
|
||||
|
||||
# some ddb kernel components need limited modifications. for now,
|
||||
# punt if not noted as implemented here.
|
||||
.if (${MACHINE} != "i386")
|
||||
|
||||
SRCS+= unsupported.c
|
||||
|
||||
.else
|
||||
|
||||
S= ${.CURDIR}/../../sys
|
||||
|
||||
CPPFLAGS+= -I${.CURDIR} -I${.OBJDIR} -I${S} -fno-strict-aliasing
|
||||
CPPFLAGS+= -DDDB_VERBOSE_HELP -DDB_MAX_LINE=10000000 -D_KMEMUSER
|
||||
|
||||
# ddb files from kernel
|
||||
.PATH: $S/ddb
|
||||
SRCS+= db_command.c db_lwp.c db_proc.c db_xxx.c db_cpu.c
|
||||
SRCS+= db_access.c db_elf.c db_examine.c
|
||||
SRCS+= db_expr.c db_lex.c db_output.c db_print.c
|
||||
SRCS+= db_sym.c db_variables.c db_write_cmd.c
|
||||
|
||||
# db_trace.c, db_disasm.c
|
||||
.PATH: ${S}/arch/${MACHINE_ARCH}/${MACHINE_ARCH}
|
||||
.for i in ${i} db_disasm db_trace
|
||||
. if (exists(${S}/arch/${MACHINE_ARCH}/${MACHINE_ARCH}/${i}.c))
|
||||
SRCS+= ${i}.c
|
||||
. endif
|
||||
.endfor
|
||||
|
||||
# crash main source
|
||||
SRCS+= crash.c
|
||||
|
||||
# arch.c
|
||||
.PATH: ${.CURDIR}/arch
|
||||
.if (exists(${.CURDIR}/arch/${MACHINE_ARCH}.c))
|
||||
SRCS+= ${MACHINE_ARCH}.c
|
||||
.else
|
||||
SRCS+= generic.c
|
||||
.endif
|
||||
|
||||
# vers.c
|
||||
SRCS+= vers.c
|
||||
vers.c: ${S}/conf/newvers.sh
|
||||
${HOST_SH} ${S}/conf/newvers.sh
|
||||
CLEANFILES+= vers.c version
|
||||
|
||||
.endif
|
||||
|
||||
.include <bsd.prog.mk>
|
||||
.include <bsd.klinks.mk>
|
||||
50
usr.sbin/crash/arch/generic.c
Normal file
50
usr.sbin/crash/arch/generic.c
Normal file
@ -0,0 +1,50 @@
|
||||
/* $NetBSD: generic.c,v 1.1 2009/03/07 22:08:08 ad Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2009 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Andrew Doran.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
__RCSID("$NetBSD: generic.c,v 1.1 2009/03/07 22:08:08 ad Exp $");
|
||||
#endif /* not lint */
|
||||
|
||||
#include <ddb/ddb.h>
|
||||
|
||||
#include <kvm.h>
|
||||
#include <nlist.h>
|
||||
#include <err.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "extern.h"
|
||||
|
||||
void
|
||||
db_mach_init(kvm_t *kd)
|
||||
{
|
||||
|
||||
}
|
||||
72
usr.sbin/crash/arch/i386.c
Normal file
72
usr.sbin/crash/arch/i386.c
Normal file
@ -0,0 +1,72 @@
|
||||
/* $NetBSD: i386.c,v 1.1 2009/03/07 22:08:08 ad Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2009 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Andrew Doran.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
__RCSID("$NetBSD: i386.c,v 1.1 2009/03/07 22:08:08 ad Exp $");
|
||||
#endif /* not lint */
|
||||
|
||||
#include <ddb/ddb.h>
|
||||
|
||||
#include <kvm.h>
|
||||
#include <nlist.h>
|
||||
#include <err.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include <machine/frame.h>
|
||||
#include <machine/pcb.h>
|
||||
|
||||
#include "extern.h"
|
||||
|
||||
static struct nlist nl[] = {
|
||||
{ .n_name = "_dumppcb" },
|
||||
{ .n_name = NULL },
|
||||
};
|
||||
|
||||
struct pcb pcb;
|
||||
|
||||
void
|
||||
db_mach_init(kvm_t *kd)
|
||||
{
|
||||
|
||||
if (kvm_nlist(kd, nl) == -1) {
|
||||
errx(EXIT_FAILURE, "kvm_nlist: %s", kvm_geterr(kd));
|
||||
}
|
||||
if ((size_t)kvm_read(kd, nl[0].n_value, &pcb, sizeof(pcb)) !=
|
||||
sizeof(pcb)) {
|
||||
errx(EXIT_FAILURE, "cannot read dumppcb: %s", kvm_geterr(kd));
|
||||
}
|
||||
ddb_regs.tf_esp = pcb.pcb_esp;
|
||||
ddb_regs.tf_ebp = pcb.pcb_ebp;
|
||||
if (ddb_regs.tf_ebp != 0 && ddb_regs.tf_esp != 0) {
|
||||
printf("Backtrace from time of crash is available.\n");
|
||||
}
|
||||
}
|
||||
92
usr.sbin/crash/crash.8
Normal file
92
usr.sbin/crash/crash.8
Normal file
@ -0,0 +1,92 @@
|
||||
.\" $NetBSD: crash.8,v 1.1 2009/03/07 22:08:08 ad Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 2009 The NetBSD Foundation, Inc.
|
||||
.\" All rights reserved.
|
||||
.\"
|
||||
.\" This code is derived from software contributed to The NetBSD Foundation
|
||||
.\" by Andrew Doran.
|
||||
.\"
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
.\" ``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 FOUNDATION OR CONTRIBUTORS
|
||||
.\" 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.
|
||||
.\"
|
||||
.Dd March 7, 2009
|
||||
.Dt CRASH 8
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm crash
|
||||
.Nd examine and debug system images
|
||||
.Sh SYNOPSIS
|
||||
.Nm
|
||||
.Op Fl M Ar core
|
||||
.Op Fl N Ar system
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Nm
|
||||
command is used to examine and debug system images.
|
||||
.Pp
|
||||
If run without any arguments,
|
||||
.Nm
|
||||
operates on the running system.
|
||||
.Pp
|
||||
The options are as follows:
|
||||
.Bl -tag -width xpalidocious
|
||||
.It Fl M Ar core
|
||||
Operate on the specified crash dump instead of the default
|
||||
.Pa /dev/mem .
|
||||
Crash dumps should be from the same version of the system and same machine
|
||||
architecture as the running version of
|
||||
.Nm crash ,
|
||||
and must be uncompressed.
|
||||
.It Fl N Ar kernel
|
||||
Extract the name list from the specified kernel instead of the default
|
||||
.Pa /dev/ksyms .
|
||||
.El
|
||||
.Pp
|
||||
The command syntax used by
|
||||
.Nm
|
||||
is the same as the in-kernel debugger.
|
||||
See the
|
||||
.Xr ddb 4
|
||||
manual page for more information.
|
||||
.Pp
|
||||
Operations and facilities that require a running system, such as breakpoints,
|
||||
are not supported by
|
||||
.Nm crash .
|
||||
.Pp
|
||||
.Nm
|
||||
does not provide pagination.
|
||||
However, by using the pipe symbol, output may be sent to commands available
|
||||
from the shell.
|
||||
For example:
|
||||
.Bd -literal -offset abcd
|
||||
crash> ps | more
|
||||
crash> ps | grep ioflush
|
||||
.Ed
|
||||
.Sh SEE ALSO
|
||||
.Xr ddb 4 ,
|
||||
.Xr ps 1 ,
|
||||
.Xr vmstat 1 ,
|
||||
.Xr pstat 8
|
||||
.Sh HISTORY
|
||||
The
|
||||
.Nm
|
||||
command appeared in
|
||||
.Nx 6.0 .
|
||||
469
usr.sbin/crash/crash.c
Normal file
469
usr.sbin/crash/crash.c
Normal file
@ -0,0 +1,469 @@
|
||||
/* $NetBSD: crash.c,v 1.1 2009/03/07 22:08:08 ad Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2009 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Andrew Doran.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
__RCSID("$NetBSD: crash.c,v 1.1 2009/03/07 22:08:08 ad Exp $");
|
||||
#endif /* not lint */
|
||||
|
||||
#include <ddb/ddb.h>
|
||||
|
||||
#include <sys/fcntl.h>
|
||||
#include <sys/mman.h>
|
||||
#include <sys/ioctl.h>
|
||||
|
||||
#include <machine/frame.h>
|
||||
|
||||
#include <stdarg.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <getopt.h>
|
||||
#include <errno.h>
|
||||
#include <histedit.h>
|
||||
#include <paths.h>
|
||||
#include <kvm.h>
|
||||
#include <err.h>
|
||||
#include <ctype.h>
|
||||
|
||||
#include "extern.h"
|
||||
|
||||
#define MAXSTAB (16 * 1024 * 1024)
|
||||
|
||||
static kvm_t *kd;
|
||||
db_regs_t ddb_regs;
|
||||
History *hist;
|
||||
HistEvent he;
|
||||
EditLine *elptr;
|
||||
char imgrelease[16];
|
||||
FILE *ofp;
|
||||
|
||||
static struct nlist nl[] = {
|
||||
#define X_OSRELEASE 0
|
||||
{ .n_name = "_osrelease" },
|
||||
#define X_PANICSTR 1
|
||||
{ .n_name = "_panicstr" },
|
||||
{ .n_name = NULL },
|
||||
};
|
||||
|
||||
void
|
||||
db_vprintf(const char *fmt, va_list ap)
|
||||
{
|
||||
char buf[1024];
|
||||
int b, c;
|
||||
|
||||
c = vsnprintf(buf, sizeof(buf), fmt, ap);
|
||||
for (b = 0; b < c; b++) {
|
||||
db_putchar(buf[b]);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
db_printf(const char *fmt, ...)
|
||||
{
|
||||
va_list ap;
|
||||
|
||||
va_start(ap, fmt);
|
||||
db_vprintf(fmt, ap);
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
void
|
||||
db_write_bytes(db_addr_t addr, size_t size, const char *str)
|
||||
{
|
||||
|
||||
if (kvm_write(kd, addr, str, size) != size) {
|
||||
warnx("kvm_write(%p, %zd): %s", (void *)addr, size,
|
||||
kvm_geterr(kd));
|
||||
longjmp(db_recover);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
db_read_bytes(db_addr_t addr, size_t size, char *str)
|
||||
{
|
||||
|
||||
if (kvm_read(kd, addr, str, size) != size) {
|
||||
warnx("kvm_read(%p, %zd): %s", (void *)addr, size,
|
||||
kvm_geterr(kd));
|
||||
longjmp(db_recover);
|
||||
}
|
||||
}
|
||||
|
||||
void *
|
||||
db_alloc(size_t sz)
|
||||
{
|
||||
|
||||
return malloc(sz);
|
||||
}
|
||||
|
||||
void *
|
||||
db_zalloc(size_t sz)
|
||||
{
|
||||
|
||||
return calloc(1, sz);
|
||||
}
|
||||
|
||||
void
|
||||
db_free(void *p, size_t sz)
|
||||
{
|
||||
|
||||
free(p);
|
||||
}
|
||||
|
||||
static void
|
||||
punt(void)
|
||||
{
|
||||
|
||||
db_printf("This command can only be used in-kernel.\n");
|
||||
}
|
||||
|
||||
void
|
||||
db_breakpoint_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
punt();
|
||||
}
|
||||
|
||||
void
|
||||
db_continue_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
db_cmd_loop_done = true;
|
||||
}
|
||||
|
||||
void
|
||||
db_delete_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
punt();
|
||||
}
|
||||
|
||||
void
|
||||
db_deletewatch_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
punt();
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
db_trace_until_matching_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
punt();
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
db_single_step_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
punt();
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
db_trace_until_call_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
punt();
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
db_watchpoint_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
|
||||
const char *modif)
|
||||
{
|
||||
|
||||
punt();
|
||||
}
|
||||
|
||||
int
|
||||
db_readline(char *lstart, int lsize)
|
||||
{
|
||||
const char *el;
|
||||
char *pcmd;
|
||||
int cnt;
|
||||
|
||||
db_force_whitespace();
|
||||
|
||||
/* Close any open pipe. */
|
||||
if (ofp != stdout) {
|
||||
(void)fflush(ofp);
|
||||
(void)pclose(ofp);
|
||||
ofp = stdout;
|
||||
}
|
||||
|
||||
/* Read next command. */
|
||||
el = el_gets(elptr, &cnt);
|
||||
if (el == NULL) {
|
||||
*lstart = '\0';
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Save to history, and copy to caller's buffer. */
|
||||
history(hist, &he, H_ENTER, el);
|
||||
strlcpy(lstart, el, lsize);
|
||||
if (cnt >= lsize) {
|
||||
cnt = lsize - 1;
|
||||
}
|
||||
lstart[cnt] = '\0';
|
||||
if (cnt > 0 && lstart[cnt - 1] == '\n') {
|
||||
lstart[cnt - 1] = '\0';
|
||||
}
|
||||
|
||||
/* Need to open a pipe? If not, return now. */
|
||||
pcmd = strchr(lstart, '|');
|
||||
if (pcmd == NULL) {
|
||||
return strlen(lstart);
|
||||
}
|
||||
|
||||
/* Open a pipe to specified command, redirect output. */
|
||||
assert(ofp == stdout);
|
||||
for (*pcmd++ = '\0'; isspace((int)*pcmd); pcmd++) {
|
||||
/* nothing */
|
||||
}
|
||||
errno = 0;
|
||||
ofp = popen(pcmd, "w");
|
||||
if (ofp == NULL) {
|
||||
warn("opening pipe for command `%s'", pcmd);
|
||||
*lstart = '\0';
|
||||
}
|
||||
return strlen(lstart);
|
||||
}
|
||||
|
||||
void
|
||||
db_check_interrupt(void)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
int
|
||||
cngetc(void)
|
||||
{
|
||||
|
||||
fprintf(stderr, "cngetc\n");
|
||||
abort();
|
||||
}
|
||||
|
||||
void
|
||||
cnputc(int c)
|
||||
{
|
||||
|
||||
putc(c, ofp);
|
||||
}
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
|
||||
fprintf(stderr,
|
||||
"usage: %s [options]\n\n"
|
||||
"-M mem\tspecify memory file\n"
|
||||
"-N nlist\tspecify name list file (default /dev/ksyms)\n",
|
||||
getprogname());
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
static const char *
|
||||
prompt(void)
|
||||
{
|
||||
|
||||
return "crash> ";
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
const char *nlistf, *memf;
|
||||
uintptr_t panicstr;
|
||||
struct winsize ws;
|
||||
struct stat sb;
|
||||
size_t sz;
|
||||
void *elf;
|
||||
int fd, ch;
|
||||
char c;
|
||||
|
||||
nlistf = _PATH_KSYMS;
|
||||
memf = _PATH_MEM;
|
||||
ofp = stdout;
|
||||
|
||||
/*
|
||||
* Parse options.
|
||||
*/
|
||||
while ((ch = getopt(argc, argv, "M:N:")) != -1) {
|
||||
switch (ch) {
|
||||
case 'M':
|
||||
memf = optarg;
|
||||
break;
|
||||
case 'N':
|
||||
nlistf = optarg;
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
}
|
||||
}
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
/*
|
||||
* Print a list of images, and allow user to select.
|
||||
*/
|
||||
/* XXX */
|
||||
|
||||
/*
|
||||
* Open the images (crash dump and symbol table).
|
||||
*/
|
||||
kd = kvm_open(nlistf, memf, NULL, O_RDONLY, getprogname());
|
||||
if (kd == NULL) {
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
fd = open(nlistf, O_RDONLY);
|
||||
if (fd < 0) {
|
||||
err(EXIT_FAILURE, "open(%s)", nlistf);
|
||||
}
|
||||
if (fstat(fd, &sb) < 0) {
|
||||
err(EXIT_FAILURE, "stat(%s)", nlistf);
|
||||
}
|
||||
if ((sb.st_mode & S_IFMT) != S_IFREG) { /* XXX ksyms */
|
||||
sz = MAXSTAB;
|
||||
elf = malloc(sz);
|
||||
if (elf == NULL) {
|
||||
err(EXIT_FAILURE, "malloc(%zd)", sz);
|
||||
}
|
||||
sz = read(fd, elf, sz);
|
||||
if ((ssize_t)sz < 0) {
|
||||
err(EXIT_FAILURE, "read(%s)", nlistf);
|
||||
}
|
||||
if (sz == MAXSTAB) {
|
||||
errx(EXIT_FAILURE, "symbol table > %d bytes",
|
||||
MAXSTAB);
|
||||
}
|
||||
} else {
|
||||
sz = sb.st_size;
|
||||
elf = mmap(NULL, sz, PROT_READ, MAP_FILE, fd, 0);
|
||||
if (elf == MAP_FAILED) {
|
||||
err(EXIT_FAILURE, "mmap(%s)", nlistf);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Print kernel & crash versions.
|
||||
*/
|
||||
if (kvm_nlist(kd, nl) == -1) {
|
||||
errx(EXIT_FAILURE, "kvm_nlist: %s", kvm_geterr(kd));
|
||||
}
|
||||
if ((size_t)kvm_read(kd, nl[X_OSRELEASE].n_value, imgrelease,
|
||||
sizeof(imgrelease)) != sizeof(imgrelease)) {
|
||||
errx(EXIT_FAILURE, "cannot read osrelease: %s",
|
||||
kvm_geterr(kd));
|
||||
}
|
||||
printf("Crash version %s, image version %s.\n", osrelease, imgrelease);
|
||||
if (strcmp(osrelease, imgrelease) != 0) {
|
||||
printf("WARNING: versions differ, you may not be able to "
|
||||
"examine this image.\n");
|
||||
}
|
||||
|
||||
/*
|
||||
* Print the panic string, if any.
|
||||
*/
|
||||
if ((size_t)kvm_read(kd, nl[X_PANICSTR].n_value, &panicstr,
|
||||
sizeof(panicstr)) != sizeof(panicstr)) {
|
||||
errx(EXIT_FAILURE, "cannot read panicstr: %s",
|
||||
kvm_geterr(kd));
|
||||
}
|
||||
if (strcmp(memf, _PATH_MEM) == 0) {
|
||||
printf("Output from a running system is unreliable.\n");
|
||||
} else if (panicstr == 0) {
|
||||
printf("System does not appear to have panicked.\n");
|
||||
} else {
|
||||
printf("System panicked: ");
|
||||
for (;;) {
|
||||
if ((size_t)kvm_read(kd, panicstr, &c, sizeof(c)) !=
|
||||
sizeof(c)) {
|
||||
errx(EXIT_FAILURE, "cannot read *panicstr: %s",
|
||||
kvm_geterr(kd));
|
||||
}
|
||||
if (c == '\0') {
|
||||
break;
|
||||
}
|
||||
putchar(c);
|
||||
panicstr++;
|
||||
}
|
||||
putchar('\n');
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize line editing.
|
||||
*/
|
||||
hist = history_init();
|
||||
history(hist, &he, H_SETSIZE, 100);
|
||||
elptr = el_init(getprogname(), stdin, stdout, stderr);
|
||||
el_set(elptr, EL_EDITOR, "emacs");
|
||||
el_set(elptr, EL_SIGNAL, 1);
|
||||
el_set(elptr, EL_HIST, history, hist);
|
||||
el_set(elptr, EL_PROMPT, prompt);
|
||||
el_source(elptr, NULL);
|
||||
|
||||
/*
|
||||
* Initialize ddb.
|
||||
*/
|
||||
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1) {
|
||||
db_max_width = ws.ws_col;
|
||||
}
|
||||
db_mach_init(kd);
|
||||
ddb_init(sz, elf, (char *)elf + sz);
|
||||
|
||||
/*
|
||||
* Debug it!
|
||||
*/
|
||||
db_command_loop();
|
||||
|
||||
/*
|
||||
* Clean up and exit.
|
||||
*/
|
||||
if (ofp != stdout) {
|
||||
(void)fflush(ofp);
|
||||
(void)pclose(ofp);
|
||||
ofp = stdout;
|
||||
}
|
||||
el_end(elptr);
|
||||
history_end(hist);
|
||||
exit(EXIT_SUCCESS);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
34
usr.sbin/crash/extern.h
Normal file
34
usr.sbin/crash/extern.h
Normal file
@ -0,0 +1,34 @@
|
||||
/* $NetBSD: extern.h,v 1.1 2009/03/07 22:08:08 ad Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2009 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Andrew Doran.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
void db_mach_init(kvm_t *);
|
||||
|
||||
extern char osrelease[];
|
||||
40
usr.sbin/crash/unsupported.c
Normal file
40
usr.sbin/crash/unsupported.c
Normal file
@ -0,0 +1,40 @@
|
||||
/* $NetBSD: unsupported.c,v 1.1 2009/03/07 22:08:08 ad Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2009 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Andrew Doran.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <err.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
|
||||
errx(EXIT_FAILURE, "not yet supported on this platform");
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user