fix: Workaround AppArmor profile for passt (#1108)

src/disk.sh

@@ -346,7 +346,7 @@ checkFS () {
   DIR=$(dirname "$DISK_FILE")
   [ ! -d "$DIR" ] && return 0
 
-  if [[ "${FS,,}" == "overlay"* && "$PODMAN" != [Yy1]* ]]; then
+  if [[ "${FS,,}" == "overlay"* && "${ENGINE,,}" == "docker" ]]; then
     warn "the filesystem of $DIR is OverlayFS, this usually means it was binded to an invalid path!"
   fi
 

src/install.sh

@@ -80,7 +80,7 @@ rm -f "$STORAGE/$BASE.system.img"
 # Check filesystem
 FS=$(stat -f -c %T "$STORAGE")
 
-if [[ "${FS,,}" == "overlay"* && "$PODMAN" != [Yy1]* ]]; then
+if [[ "${FS,,}" == "overlay"* && "${ENGINE,,}" == "docker" ]]; then
   warn "the filesystem of $STORAGE is OverlayFS, this usually means it was binded to an invalid path!"
 fi
 

src/network.sh

@@ -19,14 +19,16 @@ set -Eeuo pipefail
 : "${VM_NET_HOST:="VirtualDSM"}"
 : "${VM_NET_MASK:="255.255.255.0"}"
 
-: "${PASST:="passt"}"
+: "${PASST:="/run/passt"}"
 : "${PASST_MTU:=""}"
 : "${PASST_OPTS:=""}"
 : "${PASST_DEBUG:=""}"
+: "${PASST_PID:="/var/run/passt.pid"}"
 
 : "${DNSMASQ_OPTS:=""}"
 : "${DNSMASQ_DEBUG:=""}"
 : "${DNSMASQ:="/usr/sbin/dnsmasq"}"
+: "${DNSMASQ_PID:="/var/run/dnsmasq.pid"}"
 : "${DNSMASQ_CONF_DIR:="/etc/dnsmasq.d"}"
 
 ADD_ERR="Please add the following setting to your container:"
@@ -127,8 +129,8 @@ configureDNS() {
   [[ "${DNSMASQ_DISABLE:-}" == [Yy1]* ]] && return 0
   [[ "$DEBUG" == [Yy1]* ]] && echo "Starting dnsmasq daemon..."
 
-  local log="/var/log/dnsmasq.log"
-  rm -f "$log"
+  [ -s "$DNSMASQ_PID" ] && pKill "$(<"$DNSMASQ_PID")"
+  rm -f "$DNSMASQ_PID"
 
   case "${NETWORK,,}" in
     "tap" | "tun" | "tuntap" | "y" )
@@ -162,6 +164,8 @@ configureDNS() {
   [ -f /etc/resolv.dnsmasq ] && DNSMASQ_OPTS+=" --resolv-file=/etc/resolv.dnsmasq"
 
   # Enable logging to file
+  local log="/var/log/dnsmasq.log"
+  rm -f "$log"
   DNSMASQ_OPTS+=" --log-facility=$log"
 
   DNSMASQ_OPTS=$(echo "$DNSMASQ_OPTS" | sed 's/\t/ /g' | tr -s ' ' | sed 's/^ *//')
@@ -309,12 +313,9 @@ configurePasst() {
   NETWORK="passt"
   [[ "$DEBUG" == [Yy1]* ]] && echo "Configuring user-mode networking..."
 
-  local log="/var/log/passt.log"
+  local log="/tmp/passt.log"
   rm -f "$log"
 
-  local pid="/var/run/dnsmasq.pid"
-  [ -s "$pid" ] && pKill "$(<"$pid")"
-
   local ip="$IP"
   [ -n "$VM_NET_IP" ] && ip="$VM_NET_IP"
 
@@ -346,13 +347,7 @@ configurePasst() {
 
   PASST_OPTS+=" -H $VM_NET_HOST"
   PASST_OPTS+=" -M $GATEWAY_MAC"
-
-  local uid gid
-  uid=$(id -u)
-  gid=$(id -g)
-  PASST_OPTS+=" --runas $uid:$gid"
-
-  PASST_OPTS+=" -P /var/run/passt.pid"
+  PASST_OPTS+=" -P  $PASST_PID"
   PASST_OPTS+=" -l $log"
   PASST_OPTS+=" -q"
 
@@ -364,6 +359,8 @@ configurePasst() {
   PASST_OPTS=$(echo "$PASST_OPTS" | sed 's/\t/ /g' | tr -s ' ' | sed 's/^ *//')
   [[ "$DEBUG" == [Yy1]* ]] && printf "Passt arguments:\n\n%s\n\n" "${PASST_OPTS// -/$'\n-'}"
 
+  [ ! -f "$PASST" ] && cp /usr/bin/passt* /run
+
   if ! $PASST ${PASST_OPTS:+ $PASST_OPTS} >/dev/null 2>&1; then
 
     rm -f "$log"
@@ -410,7 +407,7 @@ configureNAT() {
   fi
 
   if [ ! -c /dev/net/tun ]; then
-    [[ "$PODMAN" == [Yy1]* ]] && return 1
+    [[ "$ROOTLESS" == [Yy1]* && "$DEBUG" != [Yy1]* ]] && return 1
     warn "$tuntap" && return 1
   fi
 
@@ -418,7 +415,7 @@ configureNAT() {
   if [[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]]; then
     { sysctl -w net.ipv4.ip_forward=1 > /dev/null 2>&1; rc=$?; } || :
     if (( rc != 0 )) || [[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]]; then
-      [[ "$PODMAN" == [Yy1]* ]] && return 1
+      [[ "$ROOTLESS" == [Yy1]* && "$DEBUG" != [Yy1]* ]] && return 1
       warn "IP forwarding is disabled. $ADD_ERR --sysctl net.ipv4.ip_forward=1"
       return 1
     fi
@@ -445,7 +442,7 @@ configureNAT() {
   { ip link add dev "$VM_NET_BRIDGE" type bridge ; rc=$?; } || :
 
   if (( rc != 0 )); then
-    [[ "$PODMAN" == [Yy1]* ]] && return 1
+    [[ "$ROOTLESS" == [Yy1]* && "$DEBUG" != [Yy1]* ]] && return 1
     warn "failed to create bridge. $ADD_ERR --cap-add NET_ADMIN" && return 1
   fi
 
@@ -460,7 +457,7 @@ configureNAT() {
 
   # QEMU Works with taps, set tap to the bridge created
   if ! ip tuntap add dev "$VM_NET_TAP" mode tap; then
-    [[ "$PODMAN" == [Yy1]* ]] && return 1
+    [[ "$ROOTLESS" == [Yy1]* && "$DEBUG" != [Yy1]* ]] && return 1
     warn "$tuntap" && return 1
   fi
 
@@ -501,8 +498,11 @@ configureNAT() {
     fi
   fi
 
-  if ! iptables -t nat -A POSTROUTING -o "$VM_NET_DEV" -j MASQUERADE; then
-    warn "$tables" && return 1
+  if ! iptables -t nat -A POSTROUTING -o "$VM_NET_DEV" -j MASQUERADE > /dev/null 2>&1; then
+    [[ "$ROOTLESS" == [Yy1]* && "$DEBUG" != [Yy1]* ]] && return 1
+    if ! iptables -t nat -A POSTROUTING -o "$VM_NET_DEV" -j MASQUERADE; then
+      warn "$tables" && return 1
+    fi
   fi
 
   # shellcheck disable=SC2086
@@ -536,13 +536,11 @@ configureNAT() {
 
 closeBridge() {
 
-  local pid="/var/run/dnsmasq.pid"
-  [ -s "$pid" ] && pKill "$(<"$pid")"
-  rm -f "$pid"
+  [ -s "$PASST_PID" ] && pKill "$(<"$PASST_PID")"
+  rm -f "$PASST_PID"
 
-  pid="/var/run/passt.pid"
-  [ -s "$pid" ] && pKill "$(<"$pid")"
-  rm -f "$pid"
+  [ -s "$DNSMASQ_PID" ] && pKill "$(<"$DNSMASQ_PID")"
+  rm -f "$DNSMASQ_PID"
 
   case "${NETWORK,,}" in
     "user"* | "passt" | "slirp" ) return 0 ;;
@@ -598,9 +596,9 @@ closeNetwork() {
 cleanUp() {
 
   # Clean up old files
+  rm -f "$PASST_PID"
+  rm -f "$DNSMASQ_PID"
   rm -f /etc/resolv.dnsmasq
-  rm -f /var/run/passt.pid
-  rm -f /var/run/dnsmasq.pid
 
   if [[ -d "/sys/class/net/$VM_NET_TAP" ]]; then
     info "Lingering interface will be removed..."
@@ -640,7 +638,7 @@ getInfo() {
     [ -d "/sys/class/net/net1" ] && VM_NET_DEV="net1"
     [ -d "/sys/class/net/net2" ] && VM_NET_DEV="net2"
     [ -d "/sys/class/net/net3" ] && VM_NET_DEV="net3"
-    # Automaticly detect the default network interface
+    # Automatically detect the default network interface
     [ -z "$VM_NET_DEV" ] && VM_NET_DEV=$(awk '$2 == 00000000 { print $1 }' /proc/net/route)
     [ -z "$VM_NET_DEV" ] && VM_NET_DEV="eth0"
   fi
@@ -802,7 +800,7 @@ else
         closeBridge
         NETWORK="user"
 
-        if [[ "$PODMAN" != [Yy1]* ]]; then
+        if [[ "$ROOTLESS" != [Yy1]* || "$DEBUG" == [Yy1]* ]]; then
           msg="falling back to user-mode networking!"
           msg="failed to setup NAT networking, $msg"
           warn "$msg"

src/reset.sh

@@ -24,19 +24,40 @@ trap 'error "Status $? while: $BASH_COMMAND (line $LINENO/$BASH_LINENO)"' ERR
 
 # Helper variables
 
-PODMAN="N"
+ROOTLESS="N"
+PRIVILEGED="N"
 ENGINE="Docker"
 PROCESS="${APP,,}"
 PROCESS="${PROCESS// /-}"
 
 if [ -f "/run/.containerenv" ]; then
-  PODMAN="Y"
-  ENGINE="Podman"
+  ENGINE="${container:-}"
+  if [[ "${ENGINE,,}" == *"podman"* ]]; then
+    ROOTLESS="Y"
+    ENGINE="Podman"
+  else
+    [ -z "$ENGINE" ] && ENGINE="Kubernetes"
+  fi
 fi
 
 echo "❯ Starting $APP for $ENGINE v$(</run/version)..."
 echo "❯ For support visit $SUPPORT"
 
+# Get the capability bounding set
+CAP_BND=$(grep '^CapBnd:' /proc/$$/status | awk '{print $2}')
+CAP_BND=$(printf "%d" "0x${CAP_BND}")
+
+# Get the last capability number
+LAST_CAP=$(cat /proc/sys/kernel/cap_last_cap)
+
+# Calculate the maximum capability value
+MAX_CAP=$(((1 << (LAST_CAP + 1)) - 1))
+
+if [ "${CAP_BND}" -eq "${MAX_CAP}" ]; then
+  ROOTLESS="N"
+  PRIVILEGED="Y"
+fi
+
 INFO="/run/shm/msg.html"
 PAGE="/run/shm/index.html"
 TEMPLATE="/var/www/index.html"