81 lines
2.0 KiB
Plaintext
81 lines
2.0 KiB
Plaintext
|
#!/bin/sh
|
||
|
|
|
||
|
|
TARGET=$1
|
||
|
|
LANG=C
|
||
|
|
|
||
|
|
cat << EOF > ${TARGET}/message
|
||
|
|
** WMI Rescue Linux (amd64) booting **
|
||
|
|
EOF
|
||
|
|
|
||
|
|
for cmd in cat echo find insmod mkdir mount sh switch_root tar; do
|
||
|
|
ln -s busybox ${TARGET}/bin/${cmd}
|
||
|
|
done
|
||
|
|
|
||
|
|
cat << EOF > ${TARGET}/init
|
||
|
|
#!/bin/sh
|
||
|
|
# WMI Rescue Linux init script.
|
||
|
|
# (C)2011 Michał Siejak <masterm@wmi.amu.edu.pl>
|
||
|
|
# (C)2012-2017 Mateusz Hromada <ruanda@wmi.amu.edu.pl>
|
||
|
|
|
||
|
|
# Print message banner
|
||
|
|
cat /message
|
||
|
|
|
||
|
|
# Mount virtual filesystems
|
||
|
|
mount -t proc proc /proc
|
||
|
|
mount -t sysfs sysfs /sys
|
||
|
|
mount -t devtmpfs devfs /dev
|
||
|
|
|
||
|
|
# Create dev directories
|
||
|
|
mkdir -p /dev/pts
|
||
|
|
mkdir -p /dev/shm
|
||
|
|
|
||
|
|
# Create mount points
|
||
|
|
mkdir /rootfs
|
||
|
|
mkdir /mnt
|
||
|
|
mkdir /mnt/squashfs
|
||
|
|
mkdir /mnt/tmpfs
|
||
|
|
|
||
|
|
# Load modules
|
||
|
|
insmod /lib/modules/4.9.0-3-amd64/kernel/drivers/block/loop.ko
|
||
|
|
insmod /lib/modules/4.9.0-3-amd64/kernel/fs/squashfs/squashfs.ko
|
||
|
|
insmod /lib/modules/4.9.0-3-amd64/kernel/fs/overlayfs/overlay.ko
|
||
|
|
|
||
|
|
# Mount root filesystem
|
||
|
|
echo "INITRAMFS: Mounting overlayfs branches ..."
|
||
|
|
mount -t squashfs -o loop,ro /rootfs.squash /mnt/squashfs
|
||
|
|
mount -t tmpfs -o mode=755,rw tmpfs /mnt/tmpfs
|
||
|
|
mkdir /mnt/tmpfs/rw
|
||
|
|
mkdir /mnt/tmpfs/work
|
||
|
|
mount -t overlay -o rw,workdir=/mnt/tmpfs/work,upperdir=/mnt/tmpfs/rw,lowerdir=/mnt/squashfs overlay /rootfs
|
||
|
|
|
||
|
|
# Extract any addon packages
|
||
|
|
if [ -n "$(find . -maxdepth 1 -name '*.tar')" ]; then
|
||
|
|
for i in /*.tar; do
|
||
|
|
echo "INITRAMFS: Extracting: $i ..."
|
||
|
|
tar x -f $i -C /rootfs
|
||
|
|
done
|
||
|
|
fi
|
||
|
|
|
||
|
|
echo "INITRAMFS: Preparing rootfs environment ..."
|
||
|
|
# Move aufs branches to new root
|
||
|
|
mkdir -p /rootfs/media/.squashfs
|
||
|
|
mkdir -p /rootfs/media/.tmpfs
|
||
|
|
mount --move /mnt/squashfs /rootfs/media/.squashfs
|
||
|
|
mount --move /mnt/tmpfs /rootfs/media/.tmpfs
|
||
|
|
|
||
|
|
# Move virtual filesystems to new root
|
||
|
|
mount --move /proc /rootfs/proc
|
||
|
|
mount --move /sys /rootfs/sys
|
||
|
|
mount --move /dev /rootfs/dev
|
||
|
|
|
||
|
|
# Switch to new root filesystem
|
||
|
|
echo "INITRAMFS: Switching to new rootfs ..."
|
||
|
|
exec switch_root -c /dev/console /rootfs /sbin/init
|
||
|
|
|
||
|
|
# Should not reach here
|
||
|
|
echo "INITRAMFS: Could not switch to new rootfs! System halted."
|
||
|
|
|
||
|
|
exit 0
|
||
|
|
EOF
|
||
|
|
chmod a+x ${TARGET}/init
|