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 (the "License").
7 # You may not use this file except in compliance with the License.
8 #
9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 # or http://www.opensolaris.org/os/licensing.
11 # See the License for the specific language governing permissions
12 # and limitations under the License.
13 #
14 # When distributing Covered Code, include this CDDL HEADER in each
15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 # If applicable, add the following below this CDDL HEADER, with the
17 # fields enclosed by brackets "[]" replaced with your own identifying
18 # information: Portions Copyright [yyyy] [name of copyright owner]
19 #
20 # CDDL HEADER END
21 #
22 #
23 # Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
24 #
25
26 . /lib/svc/share/smf_include.sh
27 . /lib/svc/share/fs_include.sh
28
29 #
30 # mksavedir
31 # Make sure that $DUMPADM_SAVDIR is set and exists.
32 #
33 mksavedir ()
34 {
35 [ -z "$DUMPADM_SAVDIR" ] && DUMPADM_SAVDIR=/var/crash/`uname -n`
36 [ -d "$DUMPADM_SAVDIR" ] || /usr/bin/mkdir -m 0700 -p $DUMPADM_SAVDIR
37 }
38
39 #
40 # We haven't run savecore on a dump device yet
41 #
42 savedev=none
43
44 #
45 # If we previously crashed early in boot before dumpadm was used to configure
46 # an alternate dump device, then the dump is in the primary swap partition,
47 # which was configured as the dump device by the first swapadd early in boot.
48 # Thus before we run dumpadm to configure the dump device, we first run
49 # savecore to check the swap partition for a dump; this is run in the
50 # foreground to reduce the chances of overwriting the dump.
51 #
52 # This does not apply for zfs root systems that use a zvol for dump;
53 # for such systems the dedicated dump device is appointed during startup
54 # of the filesystem/usr:default instance before any swap is added.
55 # Therefore we must check that the dump device is a swap device here -
56 # if not then we'll run savecore here in the foreground and prevent
57 # our dependent services coming online until we're done.
58 #
59
60 rootiszfs=0
61 alreadydedicated=0
62
63 readmnttab / </etc/mnttab
64 if [ "$fstype" = zfs ] ; then
65 rootiszfs=1
66 if [ -x /usr/sbin/dumpadm ]; then
67 if /usr/sbin/dumpadm 2>/dev/null | grep "Dump device:" | \
68 grep '(dedicated)' > /dev/null 2>&1; then
69 alreadydedicated=1
70 fi
71 fi
72 fi
73
74 if [ -x /usr/bin/savecore -a \
75 \( ! $rootiszfs -eq 1 -o $alreadydedicated -eq 0 \) ]; then
76 [ -r /etc/dumpadm.conf ] && . /etc/dumpadm.conf
77
78 if [ "x$DUMPADM_ENABLE" != xno ] && mksavedir; then
79 /usr/bin/savecore $DUMPADM_SAVDIR
80 shift $#
81 set -- `/usr/sbin/dumpadm 2>/dev/null | /usr/bin/grep 'device:'`
82 savedev=${3:-none}
83 else
84 #
85 # dumpadm -n is in effect, but we can still run savecore
86 # to raise an event with initial panic detail extracted
87 # from the dump header.
88 #
89 /usr/bin/savecore -c
90 fi
91 fi
92
93 if [ ! -x /usr/bin/savecore ]; then
94 echo "WARNING: /usr/bin/savecore is missing or not executable" >& 2
95 fi
96
97 #
98 # Now run dumpadm to configure the dump device based on the settings
99 # previously saved by dumpadm. See dumpadm(1m) for instructions on
100 # how to modify the dump settings.
101 #
102 if [ -x /usr/sbin/dumpadm ]; then
103 /usr/sbin/dumpadm -u || $SMF_EXIT_ERR_CONFIG
104 else
105 echo "WARNING: /usr/sbin/dumpadm is missing or not executable" >& 2
106 exit $SMF_EXIT_ERR_CONFIG
107 fi
108
109 if [ -r /etc/dumpadm.conf ]; then
110 . /etc/dumpadm.conf
111 else
112 echo "WARNING: /etc/dumpadm.conf is missing or unreadable" >& 2
113 exit $SMF_EXIT_ERR_CONFIG
114 fi
115
116 #
117 # If the savecore executable is absent then we're done
118 #
119 if [ ! -x /usr/bin/savecore ]; then
120 exit $SMF_EXIT_ERR_CONFIG
121 fi
122
123 #
124 # Now that dumpadm has reconfigured /dev/dump, we need to run savecore again
125 # because the dump device may have changed. If the earlier savecore had
126 # saved the dump, savecore will just exit immediately.
127 #
128
129 isswap=0
130 swapchanged=0
131 if /usr/sbin/swap -l 2>/dev/null | grep "^${DUMPADM_DEVICE} " \
132 >/dev/null 2>&1; then
133 isswap=1
134 if [ "x$savedev" != "x$DUMPADM_DEVICE" ]; then
135 swapchanged=1
136 fi
137 fi
138
139 if [ "x$DUMPADM_ENABLE" != xno ]; then
140 if [ $isswap -eq 1 ]; then
141 #
142 # If the dump device is part of swap, we only need to run
143 # savecore a second time if the device is different from the
144 # swap device on which we initially ran savecore.
145 #
146 if [ $swapchanged -eq 1 ]; then
147 mksavedir && /usr/bin/savecore $DUMPADM_SAVDIR &
148 fi
149 else
150 #
151 # The dump device couldn't have been dedicated before we
152 # ran dumpadm, so we must execute savecore again.
153 #
154 mksavedir && /usr/bin/savecore $DUMPADM_SAVDIR &
155 fi
156 else
157 #
158 # savecore not enabled. Check whether a valid dump is
159 # present on the device and raise an event to signal that,
160 # but avoid sending a duplicate event from the savecore -c
161 # earlier.
162 #
163 if [ $isswap -eq 0 -o $swapchanged -eq 1 ]; then
164 /usr/bin/savecore -c
165 fi
166 fi
167
168 exit $SMF_EXIT_OK