init.sh.in

#!/rescue/sh

set -e

PATH="/rescue"

if [ "$(ps -o command 1 | tail -n 1 | ( read -r c o; echo "${o}" ))" = "-s" ]; then
  echo "==> Running in single-user mode"
  SINGLE_USER="true"
fi

echo "==> Remount rootfs as read-write"
mount -u -w /

makedir=${makedir:-"/cdrom"}

echo "==> Make mountpoints /cdrom"
mkdir -p "${makedir}"

echo "Waiting for GhostBSD media to initialize"
while : ; do
    [ -e "/dev/iso9660/GHOSTBSD" ] && echo "found /dev/iso9660/GHOSTBSD" && sleep 2 && break
    sleep 2
done

echo "==> Mount cdrom"
mount_cd9660 /dev/iso9660/@VOLUME@ /cdrom

if [ "$SINGLE_USER" = "true" ]; then
        echo "Starting interactive shell in temporary rootfs ..."
        exit 0
fi

# Ensure the system has more than enough memory for memdisk
requiredmem=4294967296
realmem=$(sysctl -n hw.realmem)
memdisk_size=$((("${realmem}"*75/100)/1024/1024/1024))
echo "Required memory ${requiredmem} for memdisk"
echo "Detected memory ${realmem} for memdisk"
if [ "$realmem" -lt "$requiredmem" ] ; then
  SINGLE_USER="true"
  echo "GhostBSD requires 4GB of memory for memdisk, and operation!"
  echo "Type exit, and press enter after entering the rescue shell to power off."
  exit 1
fi

echo "==> Mount swap-based memdisk"
mdconfig -a -t swap -s ${memdisk_size}g -u 1 >/dev/null 2>/dev/null
zpool create livecd /dev/md1 >/dev/null 2>/dev/null
zfs set compression=zstd-9 livecd
zfs set primarycache=none livecd
echo "==> Replicate system image to swap-based memdisk"
dd if=/cdrom/data/system.img status=progress bs=1M | zfs recv -F livecd
kenv init_shell="/rescue/sh"
exit 0