#!/bin/bash
export LC_ALL=C
cd "$(realpath "${0%/*}")"
unset CHROOT_CMD
unset EXECUTE
unset NO_EXIT
unset Mount_PT_to_Del
declare -a options="$(getopt -o c:,e:,n: --long chroot-cmd::,chroot-command,cmd::,::command::,no-exit:: -- "$@")"
eval set --"$options_str"
eval set --"$options"
while [ $# -gt 0 ]; do
case "$1" in
-c|--chroot-cmd|--chroot-command)
if [ $# -lt 2 ] || [[ $2 = 1* ]]; then
CHROOT_CMD=( iron )
shift 1
else
CHROOT_CMD=( $2 )
shift 2
fi
[ -z ${EXECUTE+x} ] && EXECUTE=""
;;
-e|--cmd|--command)
if [ $# -lt 2 ] || [[ $2 = 1* ]]; then
EXECUTE=( iron )
shift 1
else
EXECUTE=( $2 )
shift 2
fi
[ -z ${CHROOT_CMD+x} ] && CHROOT_CMD=""
;;
--no-exit)
if [ $# -lt 2 ] || [[ $2 = 1* ]]; then
NO_EXIT=true
shift 1
else
NO_EXIT=$2
shift 2
fi
;;
--)
shift
break
;;
*)
shift
;;
esac
done
if [ -z ${NO_EXIT+x} ]; then
NO_EXIT=false
fi
if [ -z ${CHROOT_CMD+x} ] && [ -z ${EXECUTE+x} ]; then
CHROOT_CMD=( iron )
EXECUTE=""
fi
SFS_NAME="$(ls -1 ../*iron*.sfs | head -n 1 | sed -r 's#^[.][.]/##g' | sed -r 's#[.]sfs##g')"
Parent_WD="$(realpath "$PWD/..")"
SFS_PATH="$Parent_WD/$SFS_NAME".sfs
Cont_Root=/mnt/cont
#TODO: fix spelling of CONT_NAME_SOUCE
CONT_NAME_SOUCE=cont #These manes must have a length greater than 1 so as to exclude "/". I'll make this more general later
CONT_NAME_DEST=cont
Mount_PT_ID="" #Don't edit this
function umountall(){
set -x
umount -l /${CONT_NAME_DEST}/tmp/.X11-unix
umount -l /${CONT_NAME_DEST}/dev/pts
umount -l /${CONT_NAME_DEST}/dev
umount -l /${CONT_NAME_DEST}/proc
umount -l /${CONT_NAME_DEST}/sys
umount -l "/$CONT_NAME_DEST"
umount -l "$Cont_TMPFS"
umount -l "${BIND_Target}"
if [ -z ${Mount_PT_to_Del+x} ]; then
files_to_remove=("/${CONT_NAME_DEST}" "$Cont_TMPFS" "$BIND_Target_Root")
else
files_to_remove=("/${CONT_NAME_DEST}" "$Cont_TMPFS" "$Mount_PT_to_Del" "$BIND_Target_Root")
fi
for to_remove in "${files_to_remove[@]}"; do
to_remove="$(realpath "/${to_remove}")"
if [ -z "$(cat /proc/mounts | grep "${to_remove}")" ] &&
[ ${#to_remove} -gt 1 ]; then
rm -rf ${to_remove}
fi
done
xhost -
}
trap 'umountall' 1
mkdir -p /${CONT_NAME_DEST}
if [ ! -z "$(ls -A "/${CONT_NAME_DEST}")" ]; then
cd /
CONT_NAME_DEST=$(mktemp -u ${CONT_NAME_DEST}.XXXXXXX)
fi
mkdir -p "/$CONT_NAME_DEST"
append_mnt_id_awk='
function get_mnt_id(mnt_pt,loop){
if (length(mnt_pt) > 0 && length(loop)>0){
cmd="cat /proc/self/mountinfo | sort | grep '" loop "' | grep " mnt_pt " | head -n 1"
} else if (length(mnt_pt) > 0){
cmd="cat /proc/self/mountinfo | sort | grep '" mnt_pt "' | head -n 1"
} else if (length(loop)>0){
cmd="cat /proc/self/mountinfo | sort | grep '" loop "' | head -n 1"
}
while ((cmd | getline )){
mnt_id=$1
break
}
close(cmd)
return mnt_id
}
{
mnt_pt=$1
loop=$2
mnt_id=get_mnt_id(mnt_pt,loop)
print mnt_id "|" mnt_pt "|" loop
}'
loop=$(losetup -a | grep "$SFS_PATH" | sed "s/:.*$//" )
if [ ! -z "$loop" ]; then
#Mount_PT=$(findmnt -o TARGET,SOURCE -D -n | grep "${loop}\$" | cut -f1 -d' ')
Mount_PT="$(findmnt -o TARGET,SOURCE -D -n | grep 'loop5$' | awk "$append_mnt_id_awk" | sort -t '|' -k1 | cut -d'|' -f2 | head -n 1)"
else
Mount_PT=${CHROOT_DIR:-/mnt/cont/sfs_img}
if [ ! -z "$(ls -A "$Mount_PT")" ]; then
Mount_PT=$(mktemp -d -p "$Cont_Root" sfs_img.XXXXXXX)
Mount_PT_ID=".${Mount_PT##*.}"
fi
mkdir -p "${Mount_PT}"
mount -o loop "$SFS_PATH" "$Mount_PT"
Mount_PT_to_Del=$Mount_PT
fi
#MNTPNT=${CHROOT_DIR:-/mnt/chroot-$SFS_NAME}
if [ ${#CONT_NAME_SOUCE} -le 1 ]; then
BIND_Source="${Mount_PT}"
else
BIND_Source="${Mount_PT}/${CONT_NAME_SOUCE}"
fi
mkdir -p "$BIND_Source"
BIND_Target_Root="$Cont_Root"/sfs__target${Mount_PT_ID}
if [ ${#Mount_PT_ID} -gt 0 ]; then
BIND_Target_Root="$Cont_Root"/sfs__target${Mount_PT_ID}
elif [ -z "$(ls -A "$BIND_Target_Root")" ]; then
BIND_Target_Root="$Cont_Root"/sfs__target
else
BIND_Target_Root=$(mktemp -d -p "$Cont_Root" sfs__target.XXXXXXX)
fi
mkdir -p "$BIND_Target_Root"
if [ ${#CONT_NAME_DEST} -gt 0 ]; then
BIND_Target=$BIND_Target_Root/${CONT_NAME_DEST}
else
BIND_Target=$BIND_Target_Root
fi
mkdir -p "$BIND_Target"
if [ ${#Mount_PT_ID} -gt 0 ]; then
Cont_TMPFS="$Cont_Root"/tmpfs${Mount_PT_ID}
elif [ -z "$(ls -A "${Cont_Root}/tmpfs")" ]; then
Cont_TMPFS="$Cont_Root"/tmpfs
else
Cont_TMPFS=$(mktemp -d -p "$Cont_Root" tmpfs.XXXXXXX)
fi
mkdir -p "$Cont_TMPFS"
mount -t tmpfs none "$Cont_TMPFS"
#mount -t tmpfs none $BIND_Target_Root;
#NEW=''
#MOUNTED_PUP_RO=$(busybox df | grep -o '/initrd/pup_ro.*')
## pup_ro1 and pup_ro2 are reserved
#for i in $(seq 3 99) # find free pup_roX
#do
# if ! [ "$(echo "$MOUNTED_PUP_RO" | grep "pup_ro${i}$")" ] ; then
# NEW=${i}
# break
# fi
#done
#Cont_Layer=/initrd/pup_ro$NEW
mount --bind "${BIND_Source}" "${BIND_Target}"
#ln -s "$BIND_Target_Root" "$Cont_Layer"
set +x
read -p "Press enter to continue"
set -x
busybox mount -t aufs -o "udba=reval,diropq=w,br:${Cont_TMPFS}=rw:${BIND_Target}=rr" aufs "/$CONT_NAME_DEST" || { umountall && exit 1; }
#busybox mount -t aufs -o remount,append:$BIND_Target_Root=rr / || { umountall && exit 1; }
mount --bind /dev /${CONT_NAME_DEST}/dev
mount --bind /proc /${CONT_NAME_DEST}/proc
mount --bind /sys /${CONT_NAME_DEST}/sys
mount -t devpts devpts /${CONT_NAME_DEST}/dev/pts
cp /etc/resolv.conf /${CONT_NAME_DEST}/etc/resolv.conf
cp /var/lib/dbus/machine-id /${CONT_NAME_DEST}/var/lib/dbus/machine-id
xhost +
mkdir -p /${CONT_NAME_DEST}/tmp/.X11-unix
mount --rbind /tmp/.X11-unix /${CONT_NAME_DEST}/tmp/.X11-unix
cd /${CONT_NAME_DEST}
set +x
if [ ! -z "${EXECUTE}" ]; then
echo "next cmd: \"${EXECUTE[@]}\" \"$@\""
read -p "Ready to EXECUTE Press enter to continue"
"${EXECUTE[@]}" "$@"
fi
if [ -z ${CHROOT_CMD+x} ]]; then
echo "next cmd: \"${CHROOT_CMD[@]}\" \"$@\""
read -p "Ready to chroot Press enter to continue"
"${CHROOT_CMD[@]}" "$@"
fi
chroot /${CONT_NAME_DEST} iron "$@"
set -x
if [ ! NO_EXIT = true ]; then
umountall
fi
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