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#!/bin/sh
#set -e
Swap ()
{
for _PARAMETER in ${LIVE_BOOT_CMDLINE}
do
case "${_PARAMETER}" in
live-boot.swap=*|swap=*)
LIVE_SWAP="true"
LIVE_SWAP_DEVICES="${_PARAMETER#*swap=}"
;;
live-boot.swap|swap)
LIVE_SWAP="true"
;;
esac
done
case "${LIVE_SWAP}" in
true)
;;
*)
return 0
;;
esac
LIVE_SWAP_DEVICES="${LIVE_SWAP_DEVICES:-/dev/sd* /dev/vd*}"
for _DEVICE in $(echo ${LIVE_SWAP_DEVICES} | sed -e 's|,| |g')
do
if [ ! -b "${_DEVICE}" ]
then
continue
fi
blkid -o udev -p ${_DEVICE%%[0-9]*} | grep -q "^ID_FS_USAGE=raid" && continue
_MAGIC="$(/bin/dd if=${_DEVICE} bs=4086 skip=1 count=1 2>/dev/null | /bin/dd bs=10 count=1 2>/dev/null)" || continue
case "${_MAGIC}" in
SWAPSPACE2|SWAP-SPACE)
_SWAP_DEVICES="${_SWAP_DEVICES} ${_DEVICE}"
;;
esac
done
# Remove all auto swap entries
if grep -qs "swap swap" /root/etc/fstab
then
grep -v "swap swap" /root/etc/fstab > /root/etc/fstab.tmp
mv /root/etc/fstab.tmp /root/etc/fstab
fi
# Add new swap entries
for _DEVICE in ${_SWAP_DEVICES}
do
echo "${_DEVICE} swap swap defaults 0 0" >> /root/etc/fstab
done
}
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