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freebsd/etc/rc.d/dumpon

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#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: dumpon
# BEFORE: disks savecore initrandom
# KEYWORD: nojail
. /etc/rc.subr
name="dumpon"
start_cmd="dumpon_start"
stop_cmd="dumpon_stop"
dumpon_try()
{
if /sbin/dumpon "${1}" ; then
# Make a symlink in devfs for savecore
ln -fs "${1}" /dev/dumpdev
return 0
fi
warn "unable to specify $1 as a dump device"
return 1
}
dumpon_start()
{
# Enable dumpdev so that savecore can see it. Enable it
# early so a crash early in the boot process can be caught.
#
case ${dumpdev} in
[Nn][Oo] | '')
;;
[Aa][Uu][Tt][Oo])
dev=$(/bin/kenv -q dumpdev)
if [ -n "${dev}" ] ; then
dumpon_try "${dev}"
return $?
fi
while read dev mp type more ; do
[ "${type}" = "swap" ] || continue
[ -c "${dev}" ] || continue
dumpon_try "${dev}" 2>/dev/null && return 0
done </etc/fstab
echo "No suitable dump device was found." 1>&2
return 1
;;
*)
dumpon_try "${dumpdev}"
;;
esac
}
dumpon_stop()
{
case ${dumpdev} in
[Nn][Oo] | '')
;;
*)
rm -f /dev/dumpdev
/sbin/dumpon -v off
;;
esac
}
load_rc_config $name
run_rc_command "$1"