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Workaround for containers that are not privileged to mount loop devices

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Kroese
2023-03-30 18:18:41 +02:00
parent 6a6a12e946
commit e89557767a
2 changed files with 32 additions and 27 deletions
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42
install.sh
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@@ -8,7 +8,7 @@ IMG="/storage"
[ ! -f "$IMG/boot.img" ] && rm -f $IMG/system.img
[ -f "$IMG/system.img" ] && exit 0
echo "Downloading $URL..."
echo "Install: Downloading $URL..."
TMP="$IMG/tmp"
FILE="$TMP/dsm.pat"
@@ -24,7 +24,7 @@ if ((SIZE<250000000)); then
echo "Invalid PAT file: File is an update pack which contains no OS image." && exit 62
fi
echo "Extracting downloaded system image..."
echo "Install: Extracting downloaded system image..."
if { tar tf "$FILE"; } >/dev/null 2>&1; then
tar xpf $FILE -C $TMP/.
@@ -44,8 +44,6 @@ HDP="$TMP/synohdpack_img"
[ ! -f "$HDP.txz" ] && echo "Invalid PAT file: HD pack not found." && exit 65
[ ! -f "$IDB.txz" ] && echo "Invalid PAT file: IndexDB file not found." && exit 66
echo "Extracting downloaded boot image..."
BOOT=$(find $TMP -name "*.bin.zip")
[ ! -f "$BOOT" ] && echo "Invalid PAT file: boot file not found." && exit 67
@@ -53,7 +51,7 @@ BOOT=$(find $TMP -name "*.bin.zip")
BOOT=$(echo $BOOT | head -c -5)
unzip -q -o $BOOT.zip -d $TMP
echo "Extracting prepared disk image..."
echo "Install: Extracting prepared disk image..."
SYSTEM="$TMP/temp.img"
PLATE="/data/template.img"
@@ -62,30 +60,38 @@ rm -f $PLATE
unxz $PLATE.xz
mv -f $PLATE $SYSTEM
echo "Installing system partition..."
echo "Install: Extracting system partition..."
PRIVILEGED=false
LABEL="1.44.1-42218"
OFFSET="1048576" # 2048 * 512
NUMBLOCKS="622560" # 2550005760 / 4096
MOUNT="/mnt/tmp"
rm -rf $MOUNT && mkdir -p $MOUNT
OFFSET=$(parted -s $SYSTEM unit B print | sed 's/^ //g' | grep "^1 " | tr -s ' ' | cut -d ' ' -f2 | sed 's/[^0-9]*//g')
if [ "$OFFSET" != "1048576" ]; then
echo "Invalid disk image, wrong offset: $OFFSET" && exit 68
fi
if ! mount -t ext4 -o loop,offset=$OFFSET $SYSTEM $MOUNT ; then
echo "Failed to mount disk image. Docker container needs to be in privileged mode during installation." && exit 69
fi
[ mount -t ext4 -o loop,offset=$OFFSET $SYSTEM $MOUNT 2>/dev/null ] && PRIVILEGED=true
rm -rf $MOUNT/{,.[!.],..?}*
mv $HDA.tgz $HDA.txz
mv -f $HDA.tgz $HDA.txz
tar xpfJ $HDP.txz --absolute-names -C $MOUNT/
tar xpfJ $HDA.txz --absolute-names -C $MOUNT/
tar xpfJ $IDB.txz --absolute-names -C $MOUNT/usr/syno/synoman/indexdb/
umount $MOUNT
if [ "$PRIVILEGED" = false ]; then
echo "Install: Installing system partition..."
# Workaround for containers that are not privileged to mount loop devices
mke2fs -q -t ext4 -b 4096 -d $MOUNT/ -L $LABEL -E offset=$OFFSET $SYSTEM $NUMBLOCKS
else
umount $MOUNT
fi
rm -rf $MOUNT
mv -f $BOOT $IMG/boot.img