build: Update Dockerfile (#518)

* feat: Detect default interface

Dockerfile

@@ -29,6 +29,7 @@ RUN apt-get update && apt-get -y upgrade \
         iptables \
         iproute2 \
         dnsmasq \
+        fakeroot \
         net-tools \
         qemu-utils \
         ca-certificates \
@@ -43,12 +44,7 @@ COPY --from=builder /qemu-host.bin /run/host.bin
 RUN chmod +x /run/*.sh && chmod +x /run/*.bin
 
 VOLUME /storage
-
-EXPOSE 22
-EXPOSE 80
-EXPOSE 139
-EXPOSE 445
-EXPOSE 5000
+EXPOSE 22 80 139 445 5000
 
 ENV RAM_SIZE "1G"
 ENV DISK_SIZE "16G"

docker-compose.yml

@@ -14,10 +14,10 @@ services:
         device_cgroup_rules:
             - 'c *:* rwm'
         cap_add:
-            - NET_ADMIN        
+            - NET_ADMIN
         ports:
             - 5000:5000
         volumes:
-            - /opt/dsm:/storage
+            - /var/dsm:/storage
         restart: on-failure
         stop_grace_period: 2m

readme.md

@@ -39,7 +39,7 @@ services:
     ports:
       - 5000:5000
     volumes:
-      - /opt/dsm:/storage
+      - /var/dsm:/storage
     restart: on-failure
     stop_grace_period: 2m
 ```
@@ -65,14 +65,14 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
 
   * ### How do I change the location of the virtual disk?
 
-    To change the virtual disk's location from the default Docker volume, include the following bind mount in your compose file:
+    To change the location of the virtual disk, include the following bind mount in your compose file:
 
     ```yaml
     volumes:
-      - /home/user/data:/storage
+      - /var/dsm:/storage
     ```
 
-    Replace the example path `/home/user/data` with the desired storage folder.
+    Replace the example path `/var/dsm` with the desired storage folder.
 
   * ### How do I add multiple disks?
 
@@ -89,18 +89,23 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
 
   * ### How do I create a growable disk?
 
-    By default, the entire capacity of the disk is reserved in advance. To create a growable disk that only allocates space that is actually used, add the following environment variable:
+    By default, the entire capacity of the disk is reserved in advance.
+
+    To create a growable disk that only allocates space that is actually used, add the following environment variables:
 
     ```yaml
     environment:
+      ALLOCATE: "N"
       DISK_FMT: "qcow2"
     ```
 
-    This can also be used to convert any existing disks to the ```qcow2``` format.
+    Please note that this may reduce the write performance of the disk.
 
   * ### How do I increase the amount of CPU or RAM?
 
-    By default, a single core and 1 GB of RAM are allocated to the container. To increase this, add the following environment variables:
+    By default, a single core and 1 GB of RAM are allocated to the container.
+
+    To increase this, add the following environment variables:
 
     ```yaml
     environment:
@@ -164,13 +169,11 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
     ```yaml
     environment:
       DHCP: "Y"
-    devices:
-      - /dev/vhost-net
     device_cgroup_rules:
       - 'c *:* rwm'
     ```
 
-    Please note that even if you don't need DHCP, it's still recommended to enable this feature as it prevents NAT issues and increases performance by using a `macvtap` interface.
+    Please note that even if you don't want DHCP, it's still recommended to enable this feature as it prevents NAT issues and increases performance by using a `macvtap` interface. In that case just set a static IP from the DSM control panel after you enabled this mode.
 
   * ### How do I passthrough the GPU?
 

src/check.sh

@@ -1,16 +1,29 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-[ ! -f "/run/qemu.pid" ] && echo "QEMU not running yet.." && exit 0
-[ -f "/run/qemu.count" ] && echo "QEMU is shutting down.." && exit 1
+[ -f "/run/qemu.end" ] && echo "QEMU is shutting down.." && exit 1
+[ ! -f "/run/qemu.pid" ] && echo "QEMU is not running yet.." && exit 0
 
 file="/run/dsm.url"
+address="/run/qemu.ip"
+
 [ ! -f  "$file" ] && echo "DSM has not enabled networking yet.." && exit 1
 
 location=$(cat "$file")
 
 if ! curl -m 20 -ILfSs "http://$location/" > /dev/null; then
-  echo "Failed to reach page at http://$location" && exit 1
+
+  if [[ "$location" == "20.20"* ]]; then
+    ip="20.20.20.1"
+    port="${location##*:}"
+    echo "Failed to reach DSM at port $port"
+  else
+    echo "Failed to reach DSM at http://$location"
+    ip="$(cat "$address")"
+  fi
+
+  echo "You might need to whitelist IP $ip in the DSM firewall." && exit 1
+
 fi
 
 echo "Healthcheck OK"

src/config.sh

@@ -14,6 +14,8 @@ if [[ "$GPU" == [Yy1]* ]] && [[ "$ARCH" == "amd64" ]]; then
   DEF_OPTS="$DEF_OPTS -device virtio-vga,id=video0,max_outputs=1,bus=pcie.0,addr=0x1"
 fi
 
+[[ "$CONSOLE" != [Yy]* ]] && DEF_OPTS="$DEF_OPTS -daemonize -D $QEMU_LOG"
+
 ARGS="$DEF_OPTS $CPU_OPTS $RAM_OPTS $MAC_OPTS $MON_OPTS $SERIAL_OPTS $NET_OPTS $DISK_OPTS $EXTRA_OPTS $ARGUMENTS"
 ARGS=$(echo "$ARGS" | sed 's/\t/ /g' | tr -s ' ')
 

src/cpu.sh

@@ -7,10 +7,11 @@ set -Eeuo pipefail
 : ${CPU_MODEL:='host'}
 : ${CPU_FEATURES:='+ssse3,+sse4.1,+sse4.2'}
 
-KVM_ERR=""
-KVM_OPTS=""
+[ "$ARCH" != "amd64" ] && KVM="N"
 
-if [[ "$ARCH" == "amd64" && "$KVM" != [Nn]* ]]; then
+if [[ "$KVM" != [Nn]* ]]; then
+
+  KVM_ERR=""
 
   if [ -e /dev/kvm ] && sh -c 'echo -n > /dev/kvm' &> /dev/null; then
     if ! grep -q -e vmx -e svm /proc/cpuinfo; then
@@ -21,25 +22,35 @@ if [[ "$ARCH" == "amd64" && "$KVM" != [Nn]* ]]; then
   fi
 
   if [ -n "$KVM_ERR" ]; then
+    KVM="N"
     error "KVM acceleration not detected $KVM_ERR, this will cause a major loss of performance."
-    error "See the FAQ on how to enable it, or skip this error by setting KVM=N (not recommended)."
+    error "See the FAQ on how to enable it, or continue without KVM by setting KVM=N (not recommended)."
     [[ "$DEBUG" != [Yy1]* ]] && exit 88
-    [[ "$CPU_MODEL" == "host"* ]] && CPU_MODEL="max,$CPU_FEATURES"
-  else
-    KVM_OPTS=",accel=kvm -enable-kvm"
   fi
 
-  if [ -n "$KVM_OPTS" ]; then
-    if ! grep -qE '^flags.* (sse4_2)' /proc/cpuinfo; then
-      error "Your host CPU does not has the SSE4.2 instruction set that Virtual DSM requires to boot."
-      error "Disable KVM by setting KVM=N to emulate a compatible CPU, at the cost of performance."
-      [[ "$DEBUG" != [Yy1]* ]] && exit 89
-    fi
+fi
+
+if [[ "$KVM" != [Nn]* ]]; then
+
+  KVM_OPTS=",accel=kvm -enable-kvm"
+
+  if ! grep -qE '^flags.* (sse4_2)' /proc/cpuinfo; then
+    error "Your host CPU does not have the SSE4.2 instruction set that Virtual DSM requires to boot."
+    error "Disable KVM by setting KVM=N to emulate a compatible CPU, at the cost of performance."
+    [[ "$DEBUG" != [Yy1]* ]] && exit 89
   fi
 
 else
 
-  [[ "$CPU_MODEL" == "host"* ]] && CPU_MODEL="max,$CPU_FEATURES"
+  KVM_OPTS=""
+
+  if [[ "$CPU_MODEL" == "host"* ]]; then
+    if [[ "$ARCH" == "amd64" ]]; then
+      CPU_MODEL="max,$CPU_FEATURES"
+    else
+      CPU_MODEL="qemu64,$CPU_FEATURES"
+    fi
+  fi
 
 fi
 

src/disk.sh

@@ -3,11 +3,12 @@ set -Eeuo pipefail
 
 # Docker environment variables
 
-: ${DISK_IO:='native'}    # I/O Mode, can be set to 'native', 'threads' or 'io_turing'
-: ${DISK_FMT:='raw'}      # Disk file format, 'raw' by default for best performance
-: ${DISK_CACHE:='none'}   # Caching mode, can be set to 'writeback' for better performance
-: ${DISK_DISCARD:='on'}   # Controls whether unmap (TRIM) commands are passed to the host.
-: ${DISK_ROTATION:='1'}   # Rotation rate, set to 1 for SSD storage and increase for HDD
+: ${DISK_IO:='native'}          # I/O Mode, can be set to 'native', 'threads' or 'io_turing'
+: ${DISK_FMT:='raw'}            # Disk file format, 'raw' by default for best performance
+: ${DISK_CACHE:='none'}         # Caching mode, can be set to 'writeback' for better performance
+: ${DISK_DISCARD:='on'}         # Controls whether unmap (TRIM) commands are passed to the host.
+: ${DISK_ROTATION:='1'}         # Rotation rate, set to 1 for SSD storage and increase for HDD
+: ${DISK_FLAGS:=''}             # Specifies the options for use with the qcow2 disk format
 
 BOOT="$STORAGE/$BASE.boot.img"
 SYSTEM="$STORAGE/$BASE.system.img"
@@ -16,10 +17,11 @@ SYSTEM="$STORAGE/$BASE.system.img"
 [ ! -f "$SYSTEM" ] && error "Virtual DSM system-image does not exist ($SYSTEM)" && exit 82
 
 DISK_OPTS="\
-    -device virtio-scsi-pci,id=hw-synoboot,bus=pcie.0,addr=0xa \
+    -object iothread,id=io1 -object iothread,id=io2 \
+    -device virtio-scsi-pci,id=hw-synoboot,iothread=io1,bus=pcie.0,addr=0xa \
     -drive file=$BOOT,if=none,id=drive-synoboot,format=raw,cache=$DISK_CACHE,aio=$DISK_IO,discard=$DISK_DISCARD,detect-zeroes=on \
     -device scsi-hd,bus=hw-synoboot.0,channel=0,scsi-id=0,lun=0,drive=drive-synoboot,id=synoboot0,rotation_rate=$DISK_ROTATION,bootindex=1 \
-    -device virtio-scsi-pci,id=hw-synosys,bus=pcie.0,addr=0xb \
+    -device virtio-scsi-pci,id=hw-synosys,iothread=io1,bus=pcie.0,addr=0xb \
     -drive file=$SYSTEM,if=none,id=drive-synosys,format=raw,cache=$DISK_CACHE,aio=$DISK_IO,discard=$DISK_DISCARD,detect-zeroes=on \
     -device scsi-hd,bus=hw-synosys.0,channel=0,scsi-id=0,lun=0,drive=drive-synosys,id=synosys0,rotation_rate=$DISK_ROTATION,bootindex=2"
 
@@ -75,74 +77,14 @@ getSize() {
   esac
 }
 
-resizeDisk() {
-  local DISK_FILE=$1
-  local CUR_SIZE=$2
-  local DATA_SIZE=$3
-  local DISK_SPACE=$4
-  local DISK_DESC=$5
-  local DISK_FMT=$6
-  local GB REQ FAIL SPACE SPACE_GB
+isCow() {
+  local FS=$1
 
-  GB=$(( (CUR_SIZE + 1073741823)/1073741824 ))
-  info "Resizing $DISK_DESC from ${GB}G to $DISK_SPACE .."
-  FAIL="Could not resize $DISK_FMT file of $DISK_DESC ($DISK_FILE) from ${GB}G to $DISK_SPACE .."
-
-  REQ=$((DATA_SIZE-CUR_SIZE))
-  (( REQ < 1 )) && error "Shrinking disks is not supported!" && exit 71
-
-  case "${DISK_FMT,,}" in
-    raw)
-      if [[ "$ALLOCATE" == [Nn]* ]]; then
-
-        # Resize file by changing its length
-        if ! truncate -s "$DISK_SPACE" "$DISK_FILE"; then
-          error "$FAIL" && exit 75
-        fi
-
-      else
-
-        # Check free diskspace
-        SPACE=$(df --output=avail -B 1 "$DIR" | tail -n 1)
-        SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
-
-        if (( REQ > SPACE )); then
-          error "Not enough free space to resize $DISK_DESC to $DISK_SPACE in $DIR, it has only $SPACE_GB GB available.."
-          error "Please specify a smaller ${DISK_DESC^^}_SIZE or disable preallocation by setting DISK_FMT to \"qcow2\"." && exit 74
-        fi
-
-        # Resize file by allocating more space
-        if ! fallocate -l "$DISK_SPACE" "$DISK_FILE"; then
-          if ! truncate -s "$DISK_SPACE" "$DISK_FILE"; then
-            error "$FAIL" && exit 75
-          fi
-        fi
-
-      fi
-      ;;
-    qcow2)
-      if ! qemu-img resize -f "$DISK_FMT" "$DISK_FILE" "$DISK_SPACE" ; then
-        error "$FAIL" && exit 72
-      fi
-      ;;
-  esac
-}
-
-convertDisk() {
-  local CONV_FLAGS="-p"
-  local SOURCE_FILE=$1
-  local SOURCE_FMT=$2
-  local DST_FILE=$3
-  local DST_FMT=$4
-
-  case "$DST_FMT" in
-    qcow2)
-      CONV_FLAGS="$CONV_FLAGS -c"
-      ;;
-  esac
-
-  # shellcheck disable=SC2086
-  qemu-img convert $CONV_FLAGS -f "$SOURCE_FMT" -O "$DST_FMT" -- "$SOURCE_FILE" "$DST_FILE"
+  if [[ "${FS,,}" == "xfs" || "${FS,,}" == "zfs" || "${FS,,}" == "btrfs" || "${FS,,}" == "bcachefs" ]]; then
+    return 0
+  fi
+       
+  return 1
 }
 
 createDisk() {
@@ -150,34 +92,52 @@ createDisk() {
   local DISK_SPACE=$2
   local DISK_DESC=$3
   local DISK_FMT=$4
-  local GB FAIL SPACE SPACE_GB
+  local FS=$5
+  local DATA_SIZE DIR SPACE FA
 
-  FAIL="Could not create a $DISK_SPACE $DISK_FMT file for $DISK_DESC ($DISK_FILE)"
+  DATA_SIZE=$(numfmt --from=iec "$DISK_SPACE")
+
+  rm -f "$DISK_FILE"
+
+  if [[ "$ALLOCATE" != [Nn]* ]]; then
+
+    # Check free diskspace
+    DIR=$(dirname "$DISK_FILE")
+    SPACE=$(df --output=avail -B 1 "$DIR" | tail -n 1)
+
+    if (( DATA_SIZE > SPACE )); then
+      local SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
+      error "Not enough free space to create a $DISK_DESC of $DISK_SPACE in $DIR, it has only $SPACE_GB GB available..."
+      error "Please specify a smaller ${DISK_DESC^^}_SIZE or disable preallocation by setting ALLOCATE=N." && exit 76
+    fi
+  fi
+
+  info "Creating a $DISK_TYPE $DISK_DESC image in $DISK_FMT format with a size of $DISK_SPACE..."
+  local FAIL="Could not create a $DISK_TYPE $DISK_FMT $DISK_DESC image of $DISK_SPACE ($DISK_FILE)"
 
   case "${DISK_FMT,,}" in
     raw)
-      if [[ "$ALLOCATE" == [Nn]* ]]; then
 
+      if isCow "$FS"; then
+        if ! touch "$DISK_FILE"; then
+          error "$FAIL" && exit 77
+        fi
+        { chattr +C "$DISK_FILE"; } || :
+      fi
+
+      if [[ "$ALLOCATE" == [Nn]* ]]; then
+    
         # Create an empty file
-        if ! truncate -s "$DISK_SPACE" "$DISK_FILE"; then
+        if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
           rm -f "$DISK_FILE"
           error "$FAIL" && exit 77
         fi
 
       else
 
-        # Check free diskspace
-        SPACE=$(df --output=avail -B 1 "$DIR" | tail -n 1)
-        SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
-
-        if (( DATA_SIZE > SPACE )); then
-          error "Not enough free space to create a $DISK_DESC of $DISK_SPACE in $DIR, it has only $SPACE_GB GB available.."
-          error "Please specify a smaller ${DISK_DESC^^}_SIZE or disable preallocation by setting DISK_FMT to \"qcow2\"." && exit 76
-        fi
-
         # Create an empty file
-        if ! fallocate -l "$DISK_SPACE" "$DISK_FILE"; then
-          if ! truncate -s "$DISK_SPACE" "$DISK_FILE"; then
+        if ! fallocate -l "$DATA_SIZE" "$DISK_FILE"; then
+          if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
             rm -f "$DISK_FILE"
             error "$FAIL" && exit 77
           fi
@@ -186,12 +146,189 @@ createDisk() {
       fi
       ;;
     qcow2)
-      if ! qemu-img create -f "$DISK_FMT" -- "$DISK_FILE" "$DISK_SPACE" ; then
+
+      local DISK_PARAM="$DISK_ALLOC"
+      isCow "$FS" && DISK_PARAM="$DISK_PARAM,nocow=on"
+      [ -n "$DISK_FLAGS" ] && DISK_PARAM="$DISK_PARAM,$DISK_FLAGS"
+
+      if ! qemu-img create -f "$DISK_FMT" -o "$DISK_PARAM" -- "$DISK_FILE" "$DATA_SIZE" ; then
         rm -f "$DISK_FILE"
         error "$FAIL" && exit 70
       fi
       ;;
   esac
+
+  if isCow "$FS"; then
+    FA=$(lsattr "$DISK_FILE")
+    if [[ "$FA" != *"C"* ]]; then
+      error "Failed to disable COW for $DISK_DESC image $DISK_FILE on ${FS^^} filesystem (returned $FA)"
+    fi
+  fi
+
+  return 0
+}
+
+resizeDisk() {
+  local DISK_FILE=$1
+  local DISK_SPACE=$2
+  local DISK_DESC=$3
+  local DISK_FMT=$4
+  local FS=$5
+  local CUR_SIZE DATA_SIZE DIR SPACE
+
+  CUR_SIZE=$(getSize "$DISK_FILE")
+  DATA_SIZE=$(numfmt --from=iec "$DISK_SPACE")
+  local REQ=$((DATA_SIZE-CUR_SIZE))
+  (( REQ < 1 )) && error "Shrinking disks is not supported yet, please increase ${DISK_DESC^^}_SIZE." && exit 71
+
+  if [[ "$ALLOCATE" != [Nn]* ]]; then
+
+    # Check free diskspace
+    DIR=$(dirname "$DISK_FILE")
+    SPACE=$(df --output=avail -B 1 "$DIR" | tail -n 1)
+
+    if (( REQ > SPACE )); then
+      local SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
+      error "Not enough free space to resize $DISK_DESC to $DISK_SPACE in $DIR, it has only $SPACE_GB GB available.."
+      error "Please specify a smaller ${DISK_DESC^^}_SIZE or disable preallocation by setting ALLOCATE=N." && exit 74
+    fi
+  fi
+
+  local GB=$(( (CUR_SIZE + 1073741823)/1073741824 ))
+  info "Resizing $DISK_DESC from ${GB}G to $DISK_SPACE..."
+  local FAIL="Could not resize the $DISK_TYPE $DISK_FMT $DISK_DESC image from ${GB}G to $DISK_SPACE ($DISK_FILE)"
+
+  case "${DISK_FMT,,}" in
+    raw)
+
+      if [[ "$ALLOCATE" == [Nn]* ]]; then
+
+        # Resize file by changing its length
+        if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
+          error "$FAIL" && exit 75
+        fi
+
+      else
+
+        # Resize file by allocating more space
+        if ! fallocate -l "$DATA_SIZE" "$DISK_FILE"; then
+          if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
+            error "$FAIL" && exit 75
+          fi
+        fi
+
+      fi
+      ;;
+    qcow2)
+
+      if ! qemu-img resize -f "$DISK_FMT" "--$DISK_ALLOC" "$DISK_FILE" "$DATA_SIZE" ; then
+        error "$FAIL" && exit 72
+      fi
+
+      ;;
+  esac
+
+  return 0
+}
+
+convertDisk() {
+  local SOURCE_FILE=$1
+  local SOURCE_FMT=$2
+  local DST_FILE=$3
+  local DST_FMT=$4
+  local DISK_BASE=$5
+  local DISK_DESC=$6
+  local FS=$7
+
+  [ -f "$DST_FILE" ] && error "Conversion failed, destination file $DST_FILE already exists?" && exit 79
+  [ ! -f "$SOURCE_FILE" ] && error "Conversion failed, source file $SOURCE_FILE does not exists?" && exit 79
+
+  local TMP_FILE="$DISK_BASE.tmp"
+  rm -f "$TMP_FILE"
+
+  if [[ "$ALLOCATE" != [Nn]* ]]; then
+
+    local DIR CUR_SIZE SPACE
+
+    # Check free diskspace
+    DIR=$(dirname "$TMP_FILE")
+    CUR_SIZE=$(getSize "$SOURCE_FILE")
+    SPACE=$(df --output=avail -B 1 "$DIR" | tail -n 1)
+
+    if (( CUR_SIZE > SPACE )); then
+      local SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
+      error "Not enough free space to convert $DISK_DESC to $DST_FMT in $DIR, it has only $SPACE_GB GB available..."
+      error "Please free up some disk space or disable preallocation by setting ALLOCATE=N." && exit 76
+    fi
+  fi
+
+  info "Converting $DISK_DESC to $DST_FMT, please wait until completed..."
+
+  local CONV_FLAGS="-p"
+  local DISK_PARAM="$DISK_ALLOC"
+  isCow "$FS" && DISK_PARAM="$DISK_PARAM,nocow=on"
+
+  if [[ "$DST_FMT" != "raw" ]]; then
+      if [[ "$ALLOCATE" == [Nn]* ]]; then
+        CONV_FLAGS="$CONV_FLAGS -c"
+      fi
+      [ -n "$DISK_FLAGS" ] && DISK_PARAM="$DISK_PARAM,$DISK_FLAGS"
+  fi
+
+  # shellcheck disable=SC2086
+  if ! qemu-img convert -f "$SOURCE_FMT" $CONV_FLAGS -o "$DISK_PARAM" -O "$DST_FMT" -- "$SOURCE_FILE" "$TMP_FILE"; then
+    rm -f "$TMP_FILE"
+    error "Failed to convert $DISK_TYPE $DISK_DESC image to $DST_FMT format in $DIR, is there enough space available?" && exit 79
+  fi
+
+  if [[ "$DST_FMT" == "raw" ]]; then
+      if [[ "$ALLOCATE" != [Nn]* ]]; then
+        # Work around qemu-img bug
+        CUR_SIZE=$(stat -c%s "$TMP_FILE")
+        if ! fallocate -l "$CUR_SIZE" "$TMP_FILE"; then
+            error "Failed to allocate $CUR_SIZE bytes for $DISK_DESC image $TMP_FILE"
+        fi
+      fi
+  fi
+
+  rm -f "$SOURCE_FILE"
+  mv "$TMP_FILE" "$DST_FILE"
+
+  if isCow "$FS"; then
+    FA=$(lsattr "$DST_FILE")
+    if [[ "$FA" != *"C"* ]]; then
+      error "Failed to disable COW for $DISK_DESC image $DST_FILE on ${FS^^} filesystem (returned $FA)"
+    fi
+  fi
+
+  info "Conversion of $DISK_DESC to $DST_FMT completed succesfully!"
+
+  return 0
+}
+
+checkFS () {
+  local FS=$1
+  local DISK_FILE=$2
+  local DISK_DESC=$3
+  local DIR FA
+
+  DIR=$(dirname "$DISK_FILE")
+  [ ! -d "$DIR" ] && return 0
+
+  if [[ "${FS,,}" == "overlay"* ]]; then
+    info "Warning: the filesystem of $DIR is OverlayFS, this usually means it was binded to an invalid path!"
+  fi
+
+  if isCow "$FS"; then
+    if [ -f "$DISK_FILE" ]; then
+      FA=$(lsattr "$DISK_FILE")
+      if [[ "$FA" != *"C"* ]]; then
+        info "Warning: COW (copy on write) is not disabled for $DISK_DESC image file $DISK_FILE, this is recommended on ${FS^^} filesystems!"
+      fi
+    fi
+  fi
+
+  return 0
 }
 
 addDisk () {
@@ -203,27 +340,28 @@ addDisk () {
   local DISK_INDEX=$6
   local DISK_ADDRESS=$7
   local DISK_FMT=$8
-  local FS DIR CUR_SIZE DATA_SIZE DISK_FILE
+  local DISK_FILE="$DISK_BASE.$DISK_EXT"
+  local DIR DATA_SIZE FS PREV_FMT PREV_EXT CUR_SIZE
 
-  DISK_FILE="$DISK_BASE.$DISK_EXT"
   DIR=$(dirname "$DISK_FILE")
   [ ! -d "$DIR" ] && return 0
 
-  FS=$(stat -f -c %T "$DIR")
-  if [[ "$FS" == "overlay"* ]]; then
-    info "Warning: the filesystem of $DIR is OverlayFS, this usually means it was binded to an invalid path!"
-  fi
-
   [ -z "$DISK_SPACE" ] && DISK_SPACE="16G"
-  DISK_SPACE=$(echo "$DISK_SPACE" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
+  DISK_SPACE=$(echo "${DISK_SPACE^^}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
   DATA_SIZE=$(numfmt --from=iec "$DISK_SPACE")
 
   if (( DATA_SIZE < 6442450944 )); then
-    error "Please increase ${DISK_DESC^^}_SIZE to at least 6 GB." && exit 73
+    if (( DATA_SIZE < 1 )); then
+      error "Invalid value for ${DISK_DESC^^}_SIZE: $DISK_SPACE" && exit 73
+    else
+      error "Please increase ${DISK_DESC^^}_SIZE to at least 6 GB." && exit 73
+    fi
   fi
 
+  FS=$(stat -f -c %T "$DIR")
+  checkFS "$FS" "$DISK_FILE" "$DISK_DESC" || exit $?
+
   if ! [ -f "$DISK_FILE" ] ; then
-    local PREV_EXT PREV_FMT PREV_FILE TMP_FILE
 
     if [[ "${DISK_FMT,,}" != "raw" ]]; then
       PREV_FMT="raw"
@@ -231,24 +369,9 @@ addDisk () {
       PREV_FMT="qcow2"
     fi
     PREV_EXT="$(fmt2ext "$PREV_FMT")"
-    PREV_FILE="$DISK_BASE.$PREV_EXT"
 
-    if [ -f "$PREV_FILE" ] ; then
-
-      info "Detected that ${DISK_DESC^^}_FMT changed from \"$PREV_FMT\" to \"$DISK_FMT\"."
-      info "Starting conversion of $DISK_DESC to this new format, please wait until completed..."
-
-      TMP_FILE="$DISK_BASE.tmp"
-      rm -f "$TMP_FILE"
-
-      if ! convertDisk "$PREV_FILE" "$PREV_FMT" "$TMP_FILE" "$DISK_FMT" ; then
-        rm -f "$TMP_FILE"
-        error "Failed to convert $DISK_DESC to $DISK_FMT format." && exit 79
-      fi
-
-      mv "$TMP_FILE" "$DISK_FILE"
-      rm -f "$PREV_FILE"
-      info "Conversion of $DISK_DESC completed succesfully!"
+    if [ -f "$DISK_BASE.$PREV_EXT" ] ; then
+      convertDisk "$DISK_BASE.$PREV_EXT" "$PREV_FMT" "$DISK_FILE" "$DISK_FMT" "$DISK_BASE" "$DISK_DESC" "$FS" || exit $?
     fi
   fi
 
@@ -256,18 +379,18 @@ addDisk () {
 
     CUR_SIZE=$(getSize "$DISK_FILE")
 
-    if [ "$DATA_SIZE" -gt "$CUR_SIZE" ]; then
-      resizeDisk "$DISK_FILE" "$CUR_SIZE" "$DATA_SIZE" "$DISK_SPACE" "$DISK_DESC" "$DISK_FMT" || exit $?
+    if (( DATA_SIZE > CUR_SIZE )); then
+      resizeDisk "$DISK_FILE" "$DISK_SPACE" "$DISK_DESC" "$DISK_FMT" "$FS" || exit $?
     fi
 
   else
 
-    createDisk "$DISK_FILE" "$DISK_SPACE" "$DISK_DESC" "$DISK_FMT" || exit $?
+    createDisk "$DISK_FILE" "$DISK_SPACE" "$DISK_DESC" "$DISK_FMT" "$FS" || exit $?
 
   fi
 
   DISK_OPTS="$DISK_OPTS \
-    -device virtio-scsi-pci,id=hw-$DISK_ID,bus=pcie.0,addr=$DISK_ADDRESS \
+    -device virtio-scsi-pci,id=hw-$DISK_ID,iothread=io2,bus=pcie.0,addr=$DISK_ADDRESS \
     -drive file=$DISK_FILE,if=none,id=drive-$DISK_ID,format=$DISK_FMT,cache=$DISK_CACHE,aio=$DISK_IO,discard=$DISK_DISCARD,detect-zeroes=on \
     -device scsi-hd,bus=hw-$DISK_ID.0,channel=0,scsi-id=0,lun=0,drive=drive-$DISK_ID,id=$DISK_ID,rotation_rate=$DISK_ROTATION,bootindex=$DISK_INDEX"
 
@@ -276,6 +399,14 @@ addDisk () {
 
 DISK_EXT="$(fmt2ext "$DISK_FMT")" || exit $?
 
+if [[ "$ALLOCATE" == [Nn]* ]]; then
+  DISK_TYPE="growable"
+  DISK_ALLOC="preallocation=off"
+else
+  DISK_TYPE="preallocated"
+  DISK_ALLOC="preallocation=falloc"
+fi
+
 DISK1_FILE="$STORAGE/data"
 if [[ ! -f "$DISK1_FILE.img" ]] && [[ -f "$STORAGE/data${DISK_SIZE}.img" ]]; then
   # Fallback for legacy installs
@@ -336,7 +467,7 @@ addDevice () {
   [ ! -b "$DISK_DEV" ] && error "Device $DISK_DEV cannot be found! Please add it to the 'devices' section of your compose file." && exit 55
 
   DISK_OPTS="$DISK_OPTS \
-    -device virtio-scsi-pci,id=hw-$DISK_ID,bus=pcie.0,addr=$DISK_ADDRESS \
+    -device virtio-scsi-pci,id=hw-$DISK_ID,iothread=io2,bus=pcie.0,addr=$DISK_ADDRESS \
     -drive file=$DISK_DEV,if=none,id=drive-$DISK_ID,format=raw,cache=$DISK_CACHE,aio=$DISK_IO,discard=$DISK_DISCARD,detect-zeroes=on \
     -device scsi-hd,bus=hw-$DISK_ID.0,channel=0,scsi-id=0,lun=0,drive=drive-$DISK_ID,id=$DISK_ID,rotation_rate=$DISK_ROTATION,bootindex=$DISK_INDEX"
 

src/entry.sh

@@ -19,16 +19,14 @@ cd /run
 trap - ERR
 
 if [[ "$CONSOLE" == [Yy]* ]]; then
-  exec qemu-system-x86_64 -pidfile "$QEMU_PID" ${ARGS:+ $ARGS}
-  exit $?
+  exec qemu-system-x86_64 ${ARGS:+ $ARGS}
 fi
 
-set -m
-(
-  [[ "$DEBUG" == [Yy1]* ]] && info "$VERS" && set -x
-  qemu-system-x86_64 ${ARGS:+ $ARGS} & echo $! > "$QEMU_PID"
-  { set +x; } 2>/dev/null
-)
-set +m
+[[ "$DEBUG" == [Yy1]* ]] && info "$VERS" && set -x
+msg=$(qemu-system-x86_64 ${ARGS:+ $ARGS})
 
-tail --pid "$(cat "$QEMU_PID")" --follow /dev/null & wait $!
+{ set +x; } 2>/dev/null && terminal "$msg"
+tail -fn +0 "$QEMU_LOG" 2>/dev/null &
+cat "$QEMU_TERM" 2>/dev/null & wait $! || true
+
+sleep 1 && finish 0

src/gpu.sh

@@ -8,16 +8,17 @@ fi
 [ ! -d /dev/dri ] && mkdir -m 755 /dev/dri
 
 if [ ! -c /dev/dri/card0 ]; then
-  mknod /dev/dri/card0 c 226 0
+  if mknod /dev/dri/card0 c 226 0; then
+    chmod 666 /dev/dri/card0
+  fi
 fi
 
 if [ ! -c /dev/dri/renderD128 ]; then
-  mknod /dev/dri/renderD128 c 226 128
+  if mknod /dev/dri/renderD128 c 226 128; then
+    chmod 666 /dev/dri/renderD128
+  fi
 fi
 
-chmod 666 /dev/dri/card0
-chmod 666 /dev/dri/renderD128
-
 addPackage "xserver-xorg-video-intel" "Intel GPU drivers"
 addPackage "qemu-system-modules-opengl" "OpenGL module"
 

src/install.sh

@@ -2,7 +2,6 @@
 set -Eeuo pipefail
 
 : ${URL:=''}    # URL of the PAT file to be downloaded.
-: ${DEV:='Y'}   # Controls whether device nodes are created.
 
 if [ -f "$STORAGE"/dsm.ver ]; then
   BASE=$(cat "$STORAGE/dsm.ver")
@@ -52,19 +51,18 @@ MIN_ROOT=471859200
 MIN_SPACE=6442450944
 FS=$(stat -f -c %T "$STORAGE")
 
-if [[ "$FS" == "overlay"* ]]; then
+if [[ "${FS,,}" == "overlay"* ]]; then
   info "Warning: the filesystem of $STORAGE is OverlayFS, this usually means it was binded to an invalid path!"
 fi
 
-if [[ "$FS" != "fat"* && "$FS" != "vfat"* && "$FS" != "exfat"* && \
-        "$FS" != "ntfs"* && "$FS" != "fuse"* && "$FS" != "msdos"* ]]; then
+if [[ "${FS,,}" != "fat"* && "${FS,,}" != "vfat"* && "${FS,,}" != "exfat"* && \
+        "${FS,,}" != "ntfs"* && "${FS,,}" != "fuse"* && "${FS,,}" != "msdos"* ]]; then
   TMP="$STORAGE/tmp"
 else
   TMP="/tmp/dsm"
   SPACE=$(df --output=avail -B 1 /tmp | tail -n 1)
   if (( MIN_SPACE > SPACE )); then
-    TMP="$STORAGE/tmp"
-    info "Warning: the $FS filesystem of $STORAGE does not support UNIX permissions.."
+    error "The ${FS^^} filesystem of $STORAGE does not support UNIX permissions, and no space left in container!" && exit 93
   fi
 fi
 
@@ -74,15 +72,9 @@ rm -rf "$TMP" && mkdir -p "$TMP"
 SPACE=$(df --output=avail -B 1 / | tail -n 1)
 (( MIN_ROOT > SPACE )) && error "Not enough free space in container root, need at least 450 MB available." && exit 96
 
-SPACE=$(df --output=avail -B 1 "$TMP" | tail -n 1)
+SPACE=$(df --output=avail -B 1 "$STORAGE" | tail -n 1)
 SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
-(( MIN_SPACE > SPACE )) && error "Not enough free space for installation in $STORAGE, have $SPACE_GB GB available but need at least 6 GB." && exit 95
-
-if [[ "$TMP" != "$STORAGE/tmp" ]]; then
-  SPACE=$(df --output=avail -B 1 "$STORAGE" | tail -n 1)
-  SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
-  (( MIN_SPACE > SPACE )) && error "Not enough free space for installation in $STORAGE, have $SPACE_GB GB available but need at least 6 GB." && exit 94
-fi
+(( MIN_SPACE > SPACE )) && error "Not enough free space for installation in $STORAGE, have $SPACE_GB GB available but need at least 6 GB." && exit 94
 
 # Check if output is to interactive TTY
 if [ -t 1 ]; then
@@ -93,6 +85,7 @@ fi
 
 # Download the required files from the Synology website
 
+ROOT="Y"
 RDC="$STORAGE/dsm.rd"
 
 if [ ! -f "$RDC" ]; then
@@ -132,14 +125,12 @@ if [ -f "$RDC" ]; then
   { xz -dc <"$RDC" >"$TMP/rd" 2>/dev/null; rc=$?; } || :
   (( rc != 1 )) && error "Failed to unxz $RDC, reason $rc" && exit 91
 
-  if [[ "$DEV" == [Nn]* ]]; then
-    # Exclude dev/ from cpio extract
-    { (cd "$TMP" && cpio -it < "$TMP/rd" | grep -Ev 'dev/' | while read -r entry; do cpio -idm "$entry" < "$TMP/rd" 2>/dev/null; done); rc=$?; } || :
+  { (cd "$TMP" && cpio -idm <"$TMP/rd" 2>/dev/null); rc=$?; } || :
+
+  if (( rc != 0 )); then
+    ROOT="N"
+    { (cd "$TMP" && fakeroot cpio -idmu <"$TMP/rd" 2>/dev/null); rc=$?; } || :
     (( rc != 0 )) && error "Failed to extract $RDC, reason $rc" && exit 92
-  else
-    { (cd "$TMP" && cpio -idm <"$TMP/rd" 2>/dev/null); rc=$?; } || :
-    (( rc != 0 )) && error "Failed to extract $RDC, reason $rc"
-    (( rc != 0 )) && error "If the container runs unprivileged, please set DEV=N to exclude device nodes." && exit 92
   fi
 
   mkdir -p /run/extract
@@ -192,15 +183,14 @@ if ((SIZE<250000000)); then
   error "The specified PAT file is probably an update pack as it's too small." && exit 62
 fi
 
+info "Install: Extracting downloaded image..."
+
 if { tar tf "$PAT"; } >/dev/null 2>&1; then
 
-  info "Install: Extracting downloaded image..."
   tar xpf "$PAT" -C "$TMP/."
 
 else
 
-  info "Install: Extracting downloaded image..."
-
   export LD_LIBRARY_PATH="/run/extract"
 
   if [ "$ARCH" == "amd64" ]; then
@@ -215,12 +205,7 @@ else
 
 fi
 
-HDA="$TMP/hda1"
-IDB="$TMP/indexdb"
-PKG="$TMP/packages"
-HDP="$TMP/synohdpack_img"
-
-[ ! -f "$HDA.tgz" ] && error "The PAT file contains no OS image." && exit 64
+info "Install: Preparing system partition..."
 
 BOOT=$(find "$TMP" -name "*.bin.zip")
 [ ! -f "$BOOT" ] && error "The PAT file contains no boot image." && exit 67
@@ -230,15 +215,29 @@ unzip -q -o "$BOOT".zip -d "$TMP"
 
 SYSTEM="$TMP/sys.img"
 SYSTEM_SIZE=4954537983
+rm -f "$SYSTEM"
 
 # Check free diskspace
 SPACE=$(df --output=avail -B 1 "$TMP" | tail -n 1)
 SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
 (( SYSTEM_SIZE > SPACE )) && error "Not enough free space to create a 4 GB system disk, have only $SPACE_GB GB available." && exit 97
 
+if ! touch "$SYSTEM"; then
+  error "Could not create file $SYSTEM for the system disk." && exit 98
+fi
+  
+if [[ "${FS,,}" == "xfs" || "${FS,,}" == "zfs" || "${FS,,}" == "btrfs" || "${FS,,}" == "bcachefs" ]]; then
+  { chattr +C "$SYSTEM"; } || :
+  FA=$(lsattr "$SYSTEM")
+  if [[ "$FA" != *"C"* ]]; then
+    error "Failed to disable COW for system image $SYSTEM on ${FS^^} filesystem (returned $FA)"
+  fi
+fi
+
 if ! fallocate -l "$SYSTEM_SIZE" "$SYSTEM"; then
   if ! truncate -s "$SYSTEM_SIZE" "$SYSTEM"; then
-    rm -f "$SYSTEM" && error "Could not allocate a file for the system disk." && exit 98
+    rm -f "$SYSTEM"
+    error "Could not allocate file $SYSTEM for the system disk." && exit 98
   fi
 fi
 
@@ -247,7 +246,11 @@ fi
 
 # Check the filesize
 SIZE=$(stat -c%s "$SYSTEM")
-[[ SIZE -ne SYSTEM_SIZE ]] && rm -f "$SYSTEM" && error "System disk has the wrong size: $SIZE" && exit 90
+
+if [[ SIZE -ne SYSTEM_SIZE ]]; then
+  rm -f "$SYSTEM"
+  error "System disk has the wrong size: $SIZE vs $SYSTEM_SIZE" && exit 90
+fi
 
 PART="$TMP/partition.fdisk"
 
@@ -263,33 +266,55 @@ PART="$TMP/partition.fdisk"
 
 sfdisk -q "$SYSTEM" < "$PART"
 
-info "Install: Extracting system partition..."
-
 MOUNT="$TMP/system"
 rm -rf "$MOUNT" && mkdir -p "$MOUNT"
 
+info "Install: Extracting system partition..."
+
+HDA="$TMP/hda1"
+IDB="$TMP/indexdb"
+PKG="$TMP/packages"
+HDP="$TMP/synohdpack_img"
+
+[ ! -f "$HDA.tgz" ] && error "The PAT file contains no OS image." && exit 64
+
 mv "$HDA.tgz" "$HDA.txz"
 
-if [[ "$DEV" == [Nn]* ]]; then
-  # Exclude dev/ from tar extract
-  tar xpfJ "$HDA.txz" --absolute-names --exclude="dev" -C "$MOUNT/"
-else
+if [[ "$ROOT" != [Nn]* ]]; then
+
   tar xpfJ "$HDA.txz" --absolute-names -C "$MOUNT/"
+
 fi
 
 [ -d "$PKG" ] && mv "$PKG/" "$MOUNT/.SynoUpgradePackages/"
 rm -f "$MOUNT/.SynoUpgradePackages/ActiveInsight-"*
 
 [ -f "$HDP.txz" ] && tar xpfJ "$HDP.txz" --absolute-names -C "$MOUNT/"
-[ -f "$IDB.txz" ] && tar xpfJ "$IDB.txz" --absolute-names -C "$MOUNT/usr/syno/synoman/indexdb/"
 
-info "Install: Installing system partition..."
+if [ -f "$IDB.txz" ]; then
+  INDEX_DB="$MOUNT/usr/syno/synoman/indexdb/"
+  mkdir -p "$INDEX_DB"
+  tar xpfJ "$IDB.txz" --absolute-names -C "$INDEX_DB"
+fi
 
 LABEL="1.44.1-42218"
 OFFSET="1048576" # 2048 * 512
 NUMBLOCKS="622560" # (4980480 * 512) / 4096
 
-mke2fs -q -t ext4 -b 4096 -d "$MOUNT/" -L "$LABEL" -F -E "offset=$OFFSET" "$SYSTEM" "$NUMBLOCKS"
+if [[ "$ROOT" != [Nn]* ]]; then
+
+  info "Install: Installing system partition..."
+
+  mke2fs -q -t ext4 -b 4096 -d "$MOUNT/" -L "$LABEL" -F -E "offset=$OFFSET" "$SYSTEM" "$NUMBLOCKS"
+
+else
+
+  fakeroot -- bash -c "set -Eeu;\
+        tar xpfJ $HDA.txz --absolute-names --skip-old-files -C $MOUNT/;\
+        printf '%b%s%b' '\E[1;34m❯ \E[1;36m' 'Install: Installing system partition...' '\E[0m\n';\
+        mke2fs -q -t ext4 -b 4096 -d $MOUNT/ -L $LABEL -F -E offset=$OFFSET $SYSTEM $NUMBLOCKS"
+
+fi
 
 rm -rf "$MOUNT"
 

src/network.sh

@@ -6,8 +6,8 @@ set -Eeuo pipefail
 : ${DHCP:='N'}
 : ${MAC:='02:11:32:AA:BB:CC'}
 
+: ${VM_NET_DEV:=''}
 : ${VM_NET_TAP:='dsm'}
-: ${VM_NET_DEV:='eth0'}
 : ${VM_NET_MAC:="$MAC"}
 : ${VM_NET_HOST:='VirtualDSM'}
 
@@ -15,6 +15,8 @@ set -Eeuo pipefail
 : ${DNSMASQ:='/usr/sbin/dnsmasq'}
 : ${DNSMASQ_CONF_DIR:='/etc/dnsmasq.d'}
 
+ADD_ERR="Please add the following setting to your container:"
+
 # ######################################
 #  Functions
 # ######################################
@@ -27,7 +29,7 @@ configureDHCP() {
 
   if (( rc != 0 )); then
     error "Cannot create macvtap interface. Please make sure the network type is 'macvlan' and not 'ipvlan',"
-    error "and that the NET_ADMIN capability has been added to the container config: --cap-add NET_ADMIN" && exit 16
+    error "and that the NET_ADMIN capability has been added to the container: --cap-add NET_ADMIN" && exit 16
   fi
 
   while ! ip link set "$VM_NET_TAP" up; do
@@ -53,15 +55,13 @@ configureDHCP() {
   { exec 30>>"$TAP_PATH"; rc=$?; } 2>/dev/null || :
 
   if (( rc != 0 )); then
-    error "Cannot create TAP interface ($rc). Please add the following docker settings to your "
-    error "container: --device-cgroup-rule='c $MAJOR:* rwm' --device=/dev/vhost-net" && exit 21
+    error "Cannot create TAP interface ($rc). $ADD_ERR --device-cgroup-rule='c *:* rwm'" && exit 21
   fi
 
   { exec 40>>/dev/vhost-net; rc=$?; } 2>/dev/null || :
 
   if (( rc != 0 )); then
-    error "VHOST can not be found ($rc). Please add the following "
-    error "docker setting to your container: --device=/dev/vhost-net" && exit 22
+    error "VHOST can not be found ($rc). $ADD_ERR --device=/dev/vhost-net" && exit 22
   fi
 
   NET_OPTS="-netdev tap,id=hostnet0,vhost=on,vhostfd=40,fd=30"
@@ -69,7 +69,7 @@ configureDHCP() {
   return 0
 }
 
-configureDNS () {
+configureDNS() {
 
   # dnsmasq configuration:
   DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-range=$VM_NET_IP,$VM_NET_IP --dhcp-host=$VM_NET_MAC,,$VM_NET_IP,$VM_NET_HOST,infinite --dhcp-option=option:netmask,255.255.255.0"
@@ -90,7 +90,27 @@ configureDNS () {
   return 0
 }
 
-configureNAT () {
+configureNAT() {
+
+  # Create the necessary file structure for /dev/net/tun
+  if [ ! -c /dev/net/tun ]; then
+    [ ! -d /dev/net ] && mkdir -m 755 /dev/net
+    if mknod /dev/net/tun c 10 200; then
+      chmod 666 /dev/net/tun
+    fi
+  fi
+
+  if [ ! -c /dev/net/tun ]; then
+    error "TUN device missing. $ADD_ERR --cap-add NET_ADMIN" && exit 25
+  fi
+
+  # Check port forwarding flag
+  if [[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]]; then
+    { sysctl -w net.ipv4.ip_forward=1 ; rc=$?; } || :
+    if (( rc != 0 )); then
+      error "IP forwarding is disabled. $ADD_ERR --sysctl net.ipv4.ip_forward=1" && exit 24
+    fi
+  fi
 
   # Create a bridge with a static IP for the VM guest
 
@@ -100,8 +120,7 @@ configureNAT () {
   { ip link add dev dockerbridge type bridge ; rc=$?; } || :
 
   if (( rc != 0 )); then
-    error "Capability NET_ADMIN has not been set most likely. Please add the "
-    error "following docker setting to your container: --cap-add NET_ADMIN" && exit 23
+    error "Failed to create bridge. $ADD_ERR --cap-add NET_ADMIN" && exit 23
   fi
 
   ip address add ${VM_NET_IP%.*}.1/24 broadcast ${VM_NET_IP%.*}.255 dev dockerbridge
@@ -122,6 +141,9 @@ configureNAT () {
   ip link set dev "$VM_NET_TAP" master dockerbridge
 
   # Add internet connection to the VM
+  update-alternatives --set iptables /usr/sbin/iptables-legacy > /dev/null
+  update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy > /dev/null
+
   iptables -t nat -A POSTROUTING -o "$VM_NET_DEV" -j MASQUERADE
   iptables -t nat -A PREROUTING -i "$VM_NET_DEV" -d "$IP" -p tcp  -j DNAT --to "$VM_NET_IP"
   iptables -t nat -A PREROUTING -i "$VM_NET_DEV" -d "$IP" -p udp  -j DNAT --to "$VM_NET_IP"
@@ -134,14 +156,6 @@ configureNAT () {
   { set +x; } 2>/dev/null
   [[ "$DEBUG" == [Yy1]* ]] && echo
 
-  # Check port forwarding flag
-  if [[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]]; then
-    { sysctl -w net.ipv4.ip_forward=1 ; rc=$?; } || :
-    if (( rc != 0 )); then
-      error "Please add the following docker setting to your container: --sysctl net.ipv4.ip_forward=1" && exit 24
-    fi
-  fi
-
   NET_OPTS="-netdev tap,ifname=$VM_NET_TAP,script=no,downscript=no,id=hostnet0"
 
   { exec 40>>/dev/vhost-net; rc=$?; } 2>/dev/null || :
@@ -152,18 +166,21 @@ configureNAT () {
   return 0
 }
 
-closeNetwork () {
+closeNetwork() {
+
+  exec 30<&- || true
+  exec 40<&- || true
 
   if [[ "$DHCP" == [Yy1]* ]]; then
 
-    { pkill -f server.sh || true; } 2>/dev/null
+    fKill "server.sh"
 
     ip link set "$VM_NET_TAP" down || true
     ip link delete "$VM_NET_TAP" || true
 
   else
 
-    { pkill -f dnsmasq || true; } 2>/dev/null
+    fKill "dnsmasq"
 
     ip link set "$VM_NET_TAP" down promisc off || true
     ip link delete "$VM_NET_TAP" || true
@@ -172,46 +189,62 @@ closeNetwork () {
     ip link delete dockerbridge || true
 
   fi
+
+  return 0
+}
+
+getInfo() {
+
+  if [ -z "$VM_NET_DEV" ]; then
+    # Automaticly detect the default network interface
+    VM_NET_DEV=$(awk '$2 == 00000000 { print $1 }' /proc/net/route)
+    [ -z "$VM_NET_DEV" ] && VM_NET_DEV="eth0"
+  fi
+
+  if [ ! -d "/sys/class/net/$VM_NET_DEV" ]; then
+    error "Network interface '$VM_NET_DEV' does not exist inside the container!"
+    error "$ADD_ERR -e \"VM_NET_DEV=NAME\" to specify another interface name." && exit 27
+  fi
+
+  VM_NET_MAC="${VM_NET_MAC//-/:}"
+  if [[ ${#VM_NET_MAC} == 12 ]]; then
+    m="$VM_NET_MAC"
+    VM_NET_MAC="${m:0:2}:${m:2:2}:${m:4:2}:${m:6:2}:${m:8:2}:${m:10:2}"
+  fi
+
+  if [[ ${#VM_NET_MAC} != 17 ]]; then
+    error "Invalid mac address: '$VM_NET_MAC', should be 12 or 17 digits long!" && exit 28
+  fi
+
+  GATEWAY=$(ip r | grep default | awk '{print $3}')
+  IP=$(ip address show dev "$VM_NET_DEV" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
+  echo "$IP" > /run/qemu.ip
+
+  if [[ "$DEBUG" == [Yy1]* ]]; then
+    info "Container IP is $IP with gateway $GATEWAY on interface $VM_NET_DEV" && echo
+  fi
+
+  return 0
 }
 
 # ######################################
 #  Configure Network
 # ######################################
 
-{ pkill -f server.sh || true; } 2>/dev/null
+fKill "server.sh"
 
-# Create the necessary file structure for /dev/net/tun
-if [ ! -c /dev/net/tun ]; then
-  [ ! -d /dev/net ] && mkdir -m 755 /dev/net
-  mknod /dev/net/tun c 10 200
-  chmod 666 /dev/net/tun
-fi
-
-[ ! -c /dev/net/tun ] && error "TUN network interface not available..." && exit 25
-
-# Create the necessary file structure for /dev/vhost-net
 if [ ! -c /dev/vhost-net ]; then
-  mknod /dev/vhost-net c 10 238
-  chmod 660 /dev/vhost-net
+  if mknod /dev/vhost-net c 10 238; then
+    chmod 660 /dev/vhost-net
+  fi
 fi
 
-update-alternatives --set iptables /usr/sbin/iptables-legacy > /dev/null
-update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy > /dev/null
-
-VM_NET_MAC="${VM_NET_MAC//-/:}"
-GATEWAY=$(ip r | grep default | awk '{print $3}')
-IP=$(ip address show dev "$VM_NET_DEV" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
-
-if [[ "$DEBUG" == [Yy1]* ]]; then
-  info "Container IP is $IP with gateway $GATEWAY" && echo
-fi
+getInfo
 
 if [[ "$DHCP" == [Yy1]* ]]; then
 
   if [[ "$GATEWAY" == "172."* ]]; then
-    if [[ "$DEBUG" == [Yy1]* ]]; then
-      info "Warning: Are you sure the container is on a macvlan network?"
-    else
+    if [[ "$DEBUG" != [Yy1]* ]]; then
       error "You can only enable DHCP while the container is on a macvlan network!" && exit 26
     fi
   fi

src/power.sh

@@ -3,38 +3,125 @@ set -Eeuo pipefail
 
 # Configure QEMU for graceful shutdown
 
+API_CMD=6
+API_TIMEOUT=50
+API_HOST="127.0.0.1:2210"
+
+QEMU_TERM=""
 QEMU_PORT=7100
 QEMU_TIMEOUT=50
-QEMU_PID=/run/qemu.pid
-QEMU_COUNT=/run/qemu.count
+QEMU_PID="/run/qemu.pid"
+QEMU_LOG="/run/qemu.log"
+QEMU_END="/run/qemu.end"
+
+if [[ "$KVM" == [Nn]* ]]; then
+  API_TIMEOUT=$(( API_TIMEOUT*2 ))
+  QEMU_TIMEOUT=$(( QEMU_TIMEOUT*2 ))
+fi
 
 rm -f "$QEMU_PID"
-rm -f "$QEMU_COUNT"
+rm -f "$QEMU_LOG"
+rm -f "$QEMU_END"
+touch "$QEMU_LOG"
 
-_trap(){
-    func="$1" ; shift
-    for sig ; do
-        trap "$func $sig" "$sig"
+_trap() {
+  func="$1" ; shift
+  for sig ; do
+    trap "$func $sig" "$sig"
+  done
+}
+
+finish() {
+
+  local pid
+  local reason=$1
+
+  if [ -f "$QEMU_PID" ]; then
+
+    pid="$(cat "$QEMU_PID")"
+    echo && error "Forcefully terminating QEMU process, reason: $reason..."
+    { kill -15 "$pid" || true; } 2>/dev/null
+
+    while isAlive "$pid"; do
+      sleep 1
+      # Workaround for zombie pid
+      [ ! -f "$QEMU_PID" ] && break
     done
+  fi
+
+  fKill "print.sh"
+  fKill "host.bin"
+
+  closeNetwork
+
+  sleep 1
+  echo && echo "❯ Shutdown completed!"
+
+  exit "$reason"
+}
+
+terminal() {
+
+  local msg=$1
+
+  if [[ "${msg,,}" != "char"* ||  "$msg" != *"serial0)" ]]; then
+    echo "$msg"
+  fi
+
+  local dev="${msg#*/dev/p}"
+  dev="/dev/p${dev%% *}"
+
+  if [ ! -c "$dev" ]; then
+    dev=$(echo 'info chardev' | nc -q 1 -w 1 localhost "$QEMU_PORT" | tr -d '\000')
+    dev="${dev#*charserial0}"
+    dev="${dev#*pty:}"
+    dev="${dev%%$'\n'*}"
+    dev="${dev%%$'\r'*}"
+  fi
+
+  if [ ! -c "$dev" ]; then
+    error "Device '$dev' not found!"
+    finish 34 && return 34
+  fi
+
+  QEMU_TERM="$dev"
+  return 0
 }
 
 _graceful_shutdown() {
 
+  local cnt=0
+  local code=$?
+  local pid url response
+
   set +e
-  local cnt response
 
-  [ ! -f "$QEMU_PID" ] && exit 130
-  [ -f "$QEMU_COUNT" ] && return
+  if [ -f "$QEMU_END" ]; then
+    echo && info "Received $1 signal while already shutting down..."
+    return
+  fi
 
-  echo 0 > "$QEMU_COUNT"
+  touch "$QEMU_END"
   echo && info "Received $1 signal, sending shutdown command..."
 
+  if [ ! -f "$QEMU_PID" ]; then
+    echo && error "QEMU PID file does not exist?"
+    finish "$code" && return "$code"
+  fi
+
+  pid="$(cat "$QEMU_PID")"
+
+  if ! isAlive "$pid"; then
+    echo && error "QEMU process does not exist?"
+    finish "$code" && return "$code"
+  fi
+
   # Don't send the powerdown signal because vDSM ignores ACPI signals
   # echo 'system_powerdown' | nc -q 1 -w 1 localhost "${QEMU_PORT}" > /dev/null
 
   # Send shutdown command to guest agent via serial port
-  url="http://127.0.0.1:2210/read?command=6&timeout=50"
-  response=$(curl -sk -m 52 -S "$url" 2>&1)
+  url="http://$API_HOST/read?command=$API_CMD&timeout=$API_TIMEOUT"
+  response=$(curl -sk -m "$(( API_TIMEOUT+2 ))" -S "$url" 2>&1)
 
   if [[ "$response" =~ "\"success\"" ]]; then
 
@@ -43,42 +130,37 @@ _graceful_shutdown() {
   else
 
     response="${response#*message\"\: \"}"
-    echo && error "Failed to send shutdown command: ${response%%\"*}"
-
-    kill -15 "$(cat "$QEMU_PID")"
-    pkill -f qemu-system-x86_64 || true
+    [ -z "$response" ] && response="second signal"
+    echo && error "Forcefully terminating because of: ${response%%\"*}"
+    { kill -15 "$pid" || true; } 2>/dev/null
 
   fi
 
-  while [ "$(cat $QEMU_COUNT)" -lt "$QEMU_TIMEOUT" ]; do
+  while [ "$cnt" -lt "$QEMU_TIMEOUT" ]; do
 
-    # Increase the counter
-    echo $(($(cat $QEMU_COUNT)+1)) > "$QEMU_COUNT"
+    ! isAlive "$pid" && break
 
-    # Try to connect to qemu
-    if echo 'info version'| nc -q 1 -w 1 localhost "$QEMU_PORT" >/dev/null 2>&1 ; then
+    sleep 1
+    cnt=$((cnt+1))
 
-      sleep 1
+    [[ "$DEBUG" == [Yy1]* ]] && info "Shutting down, waiting... ($cnt/$QEMU_TIMEOUT)"
 
-      cnt="$(cat $QEMU_COUNT)/$QEMU_TIMEOUT"
-      [[ "$DEBUG" == [Yy1]* ]] && info "Shutting down, waiting... ($cnt)"
-
-    fi
+    # Workaround for zombie pid
+    [ ! -f "$QEMU_PID" ] && break
 
   done
 
-  echo && echo "❯ Quitting..."
-  echo 'quit' | nc -q 1 -w 1 localhost "$QEMU_PORT" >/dev/null 2>&1 || true
+  if [ "$cnt" -ge "$QEMU_TIMEOUT" ]; then
+    echo && error "Shutdown timeout reached, aborting..."
+  fi
 
-  { pkill -f print.sh || true; } 2>/dev/null
-  { pkill -f host.bin || true; } 2>/dev/null
-
-  closeNetwork
-  sleep 1
-
-  return
+  finish "$code" && return "$code"
 }
 
-_trap _graceful_shutdown SIGTERM SIGHUP SIGINT SIGABRT SIGQUIT
+if [[ "$CONSOLE" != [Yy]* ]]; then
+  _trap _graceful_shutdown SIGTERM SIGHUP SIGINT SIGABRT SIGQUIT
+fi
 
-MON_OPTS="-monitor telnet:localhost:$QEMU_PORT,server,nowait,nodelay"
+MON_OPTS="\
+        -pidfile $QEMU_PID \
+        -monitor telnet:localhost:$QEMU_PORT,server,nowait,nodelay"

src/print.sh

@@ -1,13 +1,18 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
+: ${DHCP:='N'}
+
 info () { printf "%b%s%b" "\E[1;34m❯ \E[1;36m" "$1" "\E[0m\n" >&2; }
 error () { printf "%b%s%b" "\E[1;31m❯ " "ERROR: $1" "\E[0m\n" >&2; }
 
 file="/run/dsm.url"
-shutdown="/run/qemu.count"
+address="/run/qemu.ip"
+shutdown="/run/qemu.end"
 url="http://127.0.0.1:2210/read?command=10"
+
 resp_err="Guest returned an invalid response:"
+curl_err="Failed to connect to guest: curl error"
 jq_err="Failed to parse response from guest: jq error"
 
 while [ ! -f  "$file" ]
@@ -19,15 +24,13 @@ do
   sleep 3
 
   [ -f "$shutdown" ] && exit 1
-
-  # Healthcheck may have intervened
   [ -f "$file" ] && break
 
-  # Retrieve IP from guest VM
+  # Retrieve network info from guest VM
   { json=$(curl -m 20 -sk "$url"); rc=$?; } || :
 
   [ -f "$shutdown" ] && exit 1
-  (( rc != 0 )) && error "Failed to connect to guest: curl error $rc" && continue
+  (( rc != 0 )) && error "$curl_err $rc" && continue
 
   { result=$(echo "$json" | jq -r '.status'); rc=$?; } || :
   (( rc != 0 )) && error "$jq_err $rc ( $json )" && continue
@@ -46,7 +49,11 @@ do
   { ip=$(echo "$json" | jq -r '.data.data.ip.data[] | select((.name=="eth0") and has("ip")).ip'); rc=$?; } || :
   (( rc != 0 )) && error "$jq_err $rc ( $json )" && continue
   [[ "$ip" == "null" ]] && error "$resp_err $json" && continue
-  [ -z "$ip" ] && continue
+
+  if [ -z "$ip" ]; then
+    [[ "$DHCP" == [Yy1]* ]] && continue
+    ip="20.20.20.21"
+  fi
 
   echo "$ip:$port" > $file
 
@@ -62,7 +69,7 @@ if [[ "$location" != "20.20"* ]]; then
 
 else
 
-  ip=$(ip address show dev eth0 | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
+  ip="$(cat "$address")"
   port="${location##*:}"
 
   if [[ "$ip" == "172."* ]]; then

src/reset.sh

@@ -11,6 +11,7 @@ trap 'error "Status $? while: $BASH_COMMAND (line $LINENO/$BASH_LINENO)"' ERR
 
 # Docker environment variables
 
+: ${TZ:=''}             # System local timezone
 : ${GPU:='N'}           # Disable GPU passthrough
 : ${KVM:='Y'}           # Enable KVM acceleration
 : ${DEBUG:='N'}         # Disable debugging mode
@@ -37,18 +38,54 @@ STORAGE="/storage"
 # Cleanup files
 
 rm -f /run/dsm.url
+rm -f /run/qemu.ip
+rm -f /run/qemu.log
 rm -f /run/qemu.pid
-rm -f /run/qemu.count
+rm -f /run/qemu.end
 
 # Cleanup dirs
 
 rm -rf /tmp/dsm
+rm -f /tmp/server.*
 rm -rf "$STORAGE/tmp"
 
 # Helper functions
 
-getCountry () {
+isAlive() {
+  local pid=$1
 
+  if kill -0 "$pid" 2>/dev/null; then
+    return 0
+  fi
+
+  return 1
+}
+
+pKill() {
+  local pid=$1
+
+  { kill -15 "$pid" || true; } 2>/dev/null
+
+  while isAlive "$pid"; do
+    sleep 0.1
+  done
+
+  return 0
+}
+
+fKill() {
+  local name=$1
+
+  { pkill -f "$name" || true; } 2>/dev/null
+
+  while pgrep -f -l "$name" >/dev/null; do
+    sleep 0.1
+  done
+
+  return 0
+}
+
+getCountry() {
   local url=$1
   local query=$2
   local rc json result
@@ -67,7 +104,14 @@ getCountry () {
   return 0
 }
 
-setCountry () {
+setCountry() {
+
+  [[ "${TZ,,}" == "asia/harbin" ]] && COUNTRY="CN"
+  [[ "${TZ,,}" == "asia/beijing" ]] && COUNTRY="CN"
+  [[ "${TZ,,}" == "asia/urumqi" ]] && COUNTRY="CN"
+  [[ "${TZ,,}" == "asia/kashgar" ]] && COUNTRY="CN"
+  [[ "${TZ,,}" == "asia/shanghai" ]] && COUNTRY="CN"
+  [[ "${TZ,,}" == "asia/chongqing" ]] && COUNTRY="CN"
 
   [ -z "$COUNTRY" ] && getCountry "https://api.ipapi.is" ".location.country_code"
   [ -z "$COUNTRY" ] && getCountry "https://ifconfig.co/json" ".country_iso"
@@ -77,8 +121,7 @@ setCountry () {
   return 0
 }
 
-addPackage () {
-
+addPackage() {
   local pkg=$1
   local desc=$2
 

src/serial.sh

@@ -47,10 +47,10 @@ done
 # Configure serial ports
 
 SERIAL_OPTS="\
-        -serial mon:stdio \
-        -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x3 \
+        -serial none \
         -chardev pty,id=charserial0 \
         -device isa-serial,chardev=charserial0,id=serial0 \
+        -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x3 \
         -chardev socket,id=charchannel0,host=127.0.0.1,port=12345,reconnect=10 \
         -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=vchannel"