feat: Validate BIOS serial (#230)

Dockerfile

@@ -29,7 +29,6 @@ RUN set -eu && \
         xz-utils \
         net-tools \
         e2fsprogs \
-        dmidecode \
         qemu-utils \
         iputils-ping \
         genisoimage \

src/boot.sh

@@ -99,4 +99,17 @@ else
   esac
 fi
 
+SM_BIOS=""
+
+if [ -s "/sys/class/dmi/id/product_serial" ]; then
+
+  BIOS_SERIAL=$(</sys/class/dmi/id/product_serial)
+  BIOS_SERIAL="${BIOS_SERIAL//[![:alnum:]]/}"
+
+  if [ -n "$BIOS_SERIAL" ]; then
+    SM_BIOS="-smbios type=1,serial=$BIOS_SERIAL"
+  fi
+
+fi
+
 return 0

src/config.sh

@@ -14,7 +14,10 @@ RAM_OPTS=$(echo "-m ${RAM_SIZE^^}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
 MON_OPTS="-monitor $MONITOR -name $PROCESS,process=$PROCESS,debug-threads=on"
 [ -n "$USB" ] && [[ "${USB,,}" != "no"* ]] && USB_OPTS="-device $USB -device usb-kbd -device usb-tablet"
 MAC_OPTS="-machine type=${MACHINE},secure=${SECURE},dump-guest-core=off${KVM_OPTS}"
+
 [ -n "$UUID" ] && MAC_OPTS+=" -uuid $UUID"
+[ -n "$SM_BIOS" ] && MAC_OPTS+=" $SM_BIOS"
+
 DEV_OPTS="-object rng-random,id=objrng0,filename=/dev/urandom"
 DEV_OPTS+=" -device virtio-rng-pci,rng=objrng0,id=rng0,bus=pcie.0"