83 lines
1.9 KiB
Bash
83 lines
1.9 KiB
Bash
#!/bin/sh
|
|
|
|
TARGET=$1
|
|
KERNEL_VERSION=$2
|
|
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>
|
|
# (C)2019 Tomasz Zaworski <zawoor@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
|
|
modprobe loop
|
|
modprobe squashfs
|
|
modprobe overlay
|
|
|
|
# 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
|