Use tar to copy firmware and avoid breaking symlinks

docs/tools/firmware.sh

@@ -535,11 +535,13 @@ case "$os" in
 					sudo umount ${verbose} ${loopdevice}
 					sudo rm -r ${verbose} ${imgdir}
 					sudo losetup -d /dev/loop50
+					sudo rm -r ${verbose} ${fwdir}
 				}
 
 				echo -e "\nDownloading macOS Recovery Image"
 				workdir=$(mktemp -d)
 				imgdir=$(mktemp -d)
+				fwdir=$(mktemp -d)
 				cd ${workdir}
 				if [[ ${verbose} = -v ]]
 				then
@@ -562,7 +564,9 @@ case "$os" in
 				sudo mount ${verbose} ${loopdevice} ${imgdir}
 				echo "Getting firmware"
 				cd - >/dev/null
-				python3 "$0" ${imgdir}/usr/share/firmware ${workdir}/firmware-renamed.tar ${verbose} || (echo -e "\nCouldn't extract firmware. Try choosing some other macOS version (should be Monterey or later). If error still persists, try restarting your Mac and then run the script again." && cleanup_dmg && exit 1)
+				tar ${verbose} -cf ${workdir}/firmware.tar -C ${imgdir}/usr/share/firmware .
+				tar --warning=no-unknown-keyword ${verbose} -xC ${fwdir} -f ${workdir}/firmware.tar
+				python3 "$0" ${fwdir} ${workdir}/firmware-renamed.tar ${verbose} || (echo -e "\nCouldn't extract firmware. Try choosing some other macOS version (should be Monterey or later). If error still persists, try restarting your Mac and then run the script again." && cleanup_dmg && exit 1)
 				sudo tar ${verbose} -xC /lib/firmware/brcm -f ${workdir}/firmware-renamed.tar
 				echo "Reloading Wi-Fi and Bluetooth drivers"
 				sudo modprobe -r brcmfmac_wcc || true
@@ -768,8 +772,6 @@ class WiFiFWCollection(object):
 				for dim in self.DIMS:
 					if dim in props:
 						ident.append(props.pop(dim))
-				if props:
-                			log.warning(f"Ignoring unexpected properties in {idpath}: {props}")
 				assert not props
 
 				node = self.root