workaround fuse limitations

Author: Samueru-sama

AppDir/bin/start-waydroid.src.hook

@@ -1,5 +1,42 @@
 #!/bin/false
 
+_run_outside_fuse() {
+	_rundir=${XDG_CACHE_HOME:-$HOME/.cache}/waydroid-AppImage
+	mkdir -p "$_rundir"/bin
+
+	ln -sfn "$APPDIR"/bin/data  "$_rundir"/bin
+	ln -sfn "$APPDIR"/bin/tools "$_rundir"/bin
+
+	cp "$APPDIR"/bin/waydroid*  "$_rundir"/bin
+
+	cp "$APPDIR"/sharun    "$_rundir"
+	cp "$APPDIR"/.env      "$_rundir" 2>/dev/null || :
+	cp "$APPDIR"/.preload  "$_rundir" 2>/dev/null || :
+
+	for pybin in "$APPDIR"/bin/python*; do
+		case "$pybin" in
+			*config)
+				: # skip python config scripts
+				;;
+			*)
+				[ -f "$pybin" ] || continue
+				ln -f "$_rundir"/sharun "$_rundir"/bin/"${pybin##*/}"
+				;;
+		esac
+	done
+
+	ln -sfn "$APPDIR"/lib     "$_rundir"/lib
+	ln -sfn "$APPDIR"/share   "$_rundir"/share
+	ln -sfn "$APPDIR"/shared  "$_rundir"/shared
+	ln -sfn "$APPDIR"/etc     "$_rundir"/etc 2>/dev/null || :
+
+	PATH=$_rundir/bin:$PATH
+	# override APPDIR now so that the AppRun launches the right binaries
+	APPDIR=$_rundir
+
+	export PATH APPDIR
+}
+
 _is_cmd() {
 	for cmd do
 		command -v "$cmd" 1>/dev/null || return 1
@@ -32,12 +69,7 @@ _install_polkit_policy() (
 	dbus_src2="$APPDIR"/share/dbus-1/system.d/id.waydro.Container.conf
 	dbus_dst2=/usr/share/dbus-1/system.d/id.waydro.Container.conf
 
-	# for some reason we get permission denied error if we try to copy
-	# directly to the destination, so instead we have to fisrt copy to
-	# XDG_CACHE_HOME and then to the destination lol
-	tmpdir="${XDG_CACHE_HOME:-$HOME/.cache}"/temp-polkit
-
-	if [ ! -f "$rule_dst" ] || [ ! -f "$dbus_dst2" ]; then
+	if [ ! -f "$rule_dst" ] || [ ! -f "$dbus_dst1" ] || [ ! -f "$dbus_dst2" ]; then
 		zenity --width=555 --question --text "$(cat <<-EOF
 		We need to install a few dbus and polkit files for this application to work
 		Normally we would place them in /usr/local/share, but for some reason it doesn't work
@@ -52,20 +84,13 @@ _install_polkit_policy() (
 		In that case you will have to remove those files manually!
 		EOF
 		)" || return 1
-
-		# remove anything funny that could be there
-		rm -rf "$tmpdir"
-		mkdir -p "$tmpdir"
-		cp -v "$rule_src"  "$tmpdir"
-		cp -v "$dbus_src1" "$tmpdir"
-		cp -v "$dbus_src2" "$tmpdir"
 		$sudocmd /bin/sh -c "
 		  mkdir -p /usr/share/polkit-1/actions
 		  mkdir -p /usr/share/dbus-1/system-services
 		  mkdir -p /usr/share/dbus-1/system.d
-		  cp -v \"$tmpdir\"/id.waydro.Container.policy  \"$rule_dst\"
-		  cp -v \"$tmpdir\"/id.waydro.Container.service \"$dbus_dst1\"
-		  cp -v \"$tmpdir\"/id.waydro.Container.conf    \"$dbus_dst2\"
+		  cp -v \"$rule_src\"   \"$rule_dst\"
+		  cp -v \"$dbus_src1\"  \"$dbus_dst1\"
+		  cp -v \"$dbus_src2\"  \"$dbus_dst2\"
 		"
 	fi
 )
@@ -131,11 +156,11 @@ elif [ "$(id -u)" = 0 ]; then
 	sudocmd=""
 else
 	zenity --error --text "We need 'pkexec' or 'lxqt-sudo' to setup Waydroid"
-	zenity --info --text "You can also try to run the AppImage as root"
 	exit 1
 fi
 
 _check_kernel
+_run_outside_fuse
 _install_polkit_policy || :
 _start_12to11