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(8) 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 169