memfs

#!/usr/bin/ash

run_latehook() {

   # Mount zram/tmpfs/ramfs root
   for memfs in ${memfs//,/ }; do
   if [ "$memfs" = "tmpfs" ]; then
        mount -t tmpfs tmpfs /mnt

   elif [ "$memfs" = "ramfs" ]; then
        mount -t ramfs -o size=1024m ramfs /mnt

   elif [ "$memfs" = "zram" ]; then
        modprobe zram num_devices=3
        echo 1073741824 > /sys/block/zram0/disksize
        mkfs.ext4 /dev/zram0
        mount -t ext4 /dev/zram0 /mnt
   fi
   done


   # Unpack rootfs
   msg "Unpacking rootfs..."
   cd /mnt

   path=${path//,/ }

   for archfs in ${archfs//,/ }; do
   if [ "$archfs" = "xz" ]; then
        xz -d < /new_root/$path/archfs.xz | cpio -imd --no-absolute-filenames > /dev/null 2>&1

   elif [ "$archfs" = "gzip" ]; then
        gzip -dc /new_root/$path/archfs.gz | cpio -imd --no-absolute-filenames > /dev/null 2>&1

   elif [ "$archfs" = "lzo" ]; then
        lzop -d < /new_root/$path/archfs.lzo | cpio -imd --no-absolute-filenames > /dev/null 2>&1

   elif [ "$archfs" = "img" ]; then
        cpio -imd --no-absolute-filenames /new_root/boot/archfs.img > /dev/null 2>&1
   fi
   done


   # Switch tmpfs to new root
   umount /new_root
   mount -M /mnt /new_root
}

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