From cfd5bf337ced3058012051fc00e808a41221f5ae Mon Sep 17 00:00:00 2001
From: Fabian Keil <fk@fabiankeil.de>
Date: Tue, 25 Apr 2017 20:01:31 +0200
Subject: [PATCH 151/325] release/rc.local: Add /tmp/savecore-and-go-to-jail
 script

Obtained from: ElectroBSD
---
 release/rc.local | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/release/rc.local b/release/rc.local
index 776ab73e9719..a5977c3a8f84 100755
--- a/release/rc.local
+++ b/release/rc.local
@@ -39,6 +39,33 @@ tar xf /usr/electrobsd-dist/src.txz -C "${JAILROOT}"
 time jail -c path="${JAILROOT}" mount.devfs host.hostname=ElectroBSD command=sh /usr/src/reproduce.sh
 EOF
 
+# create a script to recover a core dump and go to the jail to analyze it
+cat << 'EOF' > /tmp/savecore-and-go-to-jail
+set -x -e
+# Fingers crossed that the first disk is the boot disk ...
+DISK=$(geom disk status -s | head -n 1 | cut -f 1 -w)
+JAILROOT="$(mktemp -d /tmp/ElectroBSD-jail-XXXXXX)"
+SWAP_PARTITION_INDEX=3
+BUILD_PARTITION_INDEX=4
+
+gpart recover "${DISK}"
+gpart add -t freebsd-swap -s 1500M "${DISK}"
+swapon "/dev/${DISK}p${SWAP_PARTITION_INDEX}"
+dumpon "/dev/${DISK}p${SWAP_PARTITION_INDEX}"
+gpart add -t freebsd-ufs "${DISK}"
+# gpart partition changes made in bhyve are currently
+# lost. The cause hasn't been diagnosed yet.
+# Explicitly include the partition layout in the
+# presumably logged output so it can be restored
+# afterwards.
+gpart show "${DISK}"   # More convenient format for humans
+gpart backup "${DISK}" # Same data in format understood by "gpart restore"
+fsck -C -y "/dev/${DISK}p${BUILD_PARTITION_INDEX}"
+mount -o async,noatime "/dev/${DISK}p${BUILD_PARTITION_INDEX}" "${JAILROOT}"
+savecore -v "${JAILROOT}/var/crash" "/dev/${DISK}p${SWAP_PARTITION_INDEX}"
+time jail -c path="${JAILROOT}" mount.devfs host.hostname=ElectroBSD command=sh
+EOF
+
 # resolv.conf from DHCP ends up in here, so make sure the directory exists
 mkdir /tmp/bsdinstall_etc
 
-- 
2.32.0