nixpkgs/test/boot-stage-1-init.sh

#! @shell@

# Print a greeting.
echo
echo "<<< NixOS Stage 1 >>>"
echo

# Set the PATH.
export PATH=/empty
for i in @path@; do
    PATH=$PATH:$i/bin
    if test -e $i/sbin; then
        PATH=$PATH:$i/sbin
    fi
done

# Mount special file systems.
mkdir /etc # to shut up mount
touch /etc/fstab # idem
mkdir /proc
mount -t proc none /proc
mkdir /sys
mount -t sysfs none /sys

# Create device nodes in /dev.
source @makeDevices@

# Load some kernel modules.
export MODULE_DIR=@modules@/lib/modules/
modprobe ide-generic
modprobe ide-disk
modprobe ide-cd

# Mount the installation CD.
mkdir /mnt
mkdir /mnt/cdrom
mount -o ro /dev/hdc /mnt/cdrom

# Start stage 2.
# !!! Note: we can't use pivot_root here (the kernel gods have
# decreed), but we could use run-init from klibc, which deletes all
# files in the initramfs, remounts the target root on /, and chroots.
cd /mnt/cdrom
mount --move . /
umount /proc # cleanup
umount /sys
exec chroot . /init

# If starting stage 2 failed, start an interactive shell.
echo "Stage 2 failed, starting emergency shell..."
exec @shell@