write transient files to tmpfs aka ram drive

scripts/install_helpers.sh

@@ -26,3 +26,22 @@ get_tf_whl () {
     }
   fi
 }
+
+install_birdnet_mount() {
+  TMP_MOUNT=$(systemd-escape -p --suffix=mount "$RECS_DIR/StreamData")
+  cat << EOF > $HOME/BirdNET-Pi/templates/$TMP_MOUNT
+[Unit]
+Description=Birdnet tmpfs for transient files
+ConditionPathExists=$RECS_DIR/StreamData
+
+[Mount]
+What=tmpfs
+Where=$RECS_DIR/StreamData
+Type=tmpfs
+Options=mode=1777,nosuid,nodev
+
+[Install]
+WantedBy=multi-user.target
+EOF
+  ln -sf $HOME/BirdNET-Pi/templates/$TMP_MOUNT /usr/lib/systemd/system
+}

scripts/install_services.sh

@@ -413,6 +413,7 @@ install_services() {
   install_gotty_logs
   install_phpsysinfo
   install_livestream_service
+  install_birdnet_mount
   install_cleanup_cron
   install_weekly_cron
   increase_caddy_timeout
@@ -426,6 +427,7 @@ install_services() {
 
 if [ -f ${config_file} ];then
   source ${config_file}
+  source install_helpers.sh
   install_services
   chown_things
 else

scripts/uninstall.sh

@@ -6,7 +6,8 @@ my_dir=$HOME/BirdNET-Pi/scripts
 source /etc/birdnet/birdnet.conf &> /dev/null
 SCRIPTS=($(ls -1 ${my_dir}) ${HOME}/.gotty)
 set -x
-services=($(awk '/service/ && /systemctl/ && !/php/ {print $3}' ${my_dir}/install_services.sh | sort) custom_recording.service avahi-alias@.service)
+TMP_MOUNT=$(systemd-escape -p --suffix=mount "$RECS_DIR/StreamData")
+services=($(awk '/service/ && /systemctl/ && !/php/ {print $3}' ${my_dir}/install_services.sh | sort) custom_recording.service avahi-alias@.service $TMP_MOUNT)
 
 remove_services() {
   for i in "${services[@]}"; do

scripts/update_birdnet_snippets.sh

@@ -106,6 +106,12 @@ if grep -q 'birdnet_server.service' "$HOME/BirdNET-Pi/templates/birdnet_analysis
     systemctl daemon-reload && restart_services.sh
 fi
 
+TMP_MOUNT=$(systemd-escape -p --suffix=mount "$RECS_DIR/StreamData")
+if ! [ -f "$HOME/BirdNET-Pi/templates/$TMP_MOUNT" ]; then
+   install_birdnet_mount
+   chown $USER:$USER "$HOME/BirdNET-Pi/templates/$TMP_MOUNT"
+fi
+
 if grep -q 'php7.4-' /etc/caddy/Caddyfile &>/dev/null; then
   sed -i 's/php7.4-/php-/' /etc/caddy/Caddyfile
 fi