avoid heredocs, they don't work on a fully readonly VFS

rc.in

@@ -33,14 +33,14 @@ rc.tmpdirs() {
 
 rc.mount_misc() {
 	for m in "${cfg_mounts[@]}"; do
-		IFS=':' read fs fs_type mountpoint mount_options <<< "$m"
+		echo "$m" | while IFS=':' read fs fs_type mountpoint mount_options; do
+			[[ "$mount_options" ]] || { mount_options='defaults'; }
 
-		[[ "$mount_options" ]] || { mount_options='defaults'; }
+			mountpoint -q "$mountpoint" || {
-
+				[[ -d "$mountpoint" ]] || { mkdir -p "$mountpoint"; }
-		mountpoint -q "$mountpoint" || {
+				mount "$fs" -n -t "$fs_type" -o "$mount_options" "$mountpoint"
-			[[ -d "$mountpoint" ]] || { mkdir -p "$mountpoint"; }
+			}
-			mount "$fs" -n -t "$fs_type" -o "$mount_options" "$mountpoint"
+		done
-		}
 	done
 }