xref: /titanic_41/usr/src/cmd/dumpadm/svc-dumpadm (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1#!/sbin/sh
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License, Version 1.0 only
7# (the "License").  You may not use this file except in compliance
8# with the License.
9#
10# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
11# or http://www.opensolaris.org/os/licensing.
12# See the License for the specific language governing permissions
13# and limitations under the License.
14#
15# When distributing Covered Code, include this CDDL HEADER in each
16# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
17# If applicable, add the following below this CDDL HEADER, with the
18# fields enclosed by brackets "[]" replaced with your own identifying
19# information: Portions Copyright [yyyy] [name of copyright owner]
20#
21# CDDL HEADER END
22#
23#
24# Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26#
27#ident	"%Z%%M%	%I%	%E% SMI"
28
29. /lib/svc/share/smf_include.sh
30
31#
32# mksavedir
33# Make sure that $DUMPADM_SAVDIR is set and exists.
34#
35mksavedir ()
36{
37	[ -z "$DUMPADM_SAVDIR" ] && DUMPADM_SAVDIR=/var/crash/`uname -n`
38	[ -d "$DUMPADM_SAVDIR" ] || /usr/bin/mkdir -m 0700 -p $DUMPADM_SAVDIR
39}
40
41#
42# We haven't run savecore on a dump device yet
43#
44savedev=none
45
46#
47# If we previously crashed early in boot before dumpadm was used to configure
48# an alternate dump device, then the dump is in the primary swap partition,
49# which was configured as the dump device by the first swapadd early in boot.
50# Thus before we run dumpadm to configure the dump device, we first run
51# savecore to check the swap partition for a dump.
52#
53if [ -x /usr/bin/savecore ]; then
54	[ -r /etc/dumpadm.conf ] && . /etc/dumpadm.conf
55
56	if [ "x$DUMPADM_ENABLE" != xno ] && mksavedir; then
57		/usr/bin/savecore $DUMPADM_SAVDIR
58		shift $#
59		set -- `/usr/sbin/dumpadm 2>/dev/null | /usr/bin/grep 'device:'`
60		savedev=${3:-none}
61	fi
62else
63	echo "WARNING: /usr/bin/savecore is missing or not executable" >& 2
64fi
65
66#
67# Now run dumpadm to configure the dump device based on the settings
68# previously saved by dumpadm.  See dumpadm(1m) for instructions on
69# how to modify the dump settings.
70#
71if [ -x /usr/sbin/dumpadm ]; then
72	/usr/sbin/dumpadm -u || $SMF_EXIT_ERR_CONFIG
73else
74	echo "WARNING: /usr/sbin/dumpadm is missing or not executable" >& 2
75	exit $SMF_EXIT_ERR_CONFIG
76fi
77
78if [ -r /etc/dumpadm.conf ]; then
79	. /etc/dumpadm.conf
80else
81	echo "WARNING: /etc/dumpadm.conf is missing or unreadable" >& 2
82	exit $SMF_EXIT_ERR_CONFIG
83fi
84
85#
86# Now that dumpadm has reconfigured /dev/dump, we need to run savecore again
87# because the dump device may have changed.  If the earlier savecore had
88# saved the dump, savecore will just exit immediately.
89#
90if [ "x$DUMPADM_ENABLE" != xno ]; then
91	if /usr/sbin/swap -l | grep "^${DUMPADM_DEVICE} " >/dev/null 2>&1; then
92		#
93		# If the dump device is part of swap, we only need to run
94		# savecore a second time if the device is different from the
95		# swap device on which we initially ran savecore.
96		#
97		[ "x$savedev" != "x$DUMPADM_DEVICE" ] && \
98		    mksavedir && /usr/bin/savecore $DUMPADM_SAVDIR &
99	else
100		#
101		# The dump device couldn't have been dedicated before we
102		# ran dumpadm, so we must execute savecore again.
103		#
104		mksavedir && /usr/bin/savecore $DUMPADM_SAVDIR &
105	fi
106fi
107
108exit $SMF_EXIT_OK
109