#!/bin/bash

trap umount_chroot HUP INT QUIT TERM SIGHUP SIGINT SIGQUIT SIGILL SIGABRT SIGKILL SIGTRAP SIGTERM SIGSTOP SIGSEGV

mount_chroot() {
  echo "Mounting chroot..."
  mount -v --bind /dev $ROOTFS/dev
  mount -vt devpts devpts $ROOTFS/dev/pts -o gid=5,mode=620
  mount -vt proc proc $ROOTFS/proc
  mount -vt sysfs sysfs $ROOTFS/sys
  mount -vt tmpfs tmpfs $ROOTFS/run
  echo "Done mounting chroot."
}

umount_chroot() {
  echo "Unmounting chroot..."
  umount -v $ROOTFS/dev/pts
  umount -v $ROOTFS/dev
  umount -v $ROOTFS/run
  umount -v $ROOTFS/proc
  umount -v $ROOTFS/sys
  echo "Done unmounting chroot."
}

ROOTFS=$1

chroot "$ROOTFS" /usr/bin/env -i \
    HOME=/ \
    TERM="$TERM" \
    LC_ALL=POSIX \
    MAKEFLAGS="-j2" \
    PS1='(bdk_chroot)$ ' \
    PATH=/bin:/usr/bin:/sbin:/usr/sbin /bin/bash --login +h