installation/install.sh: Parse network related information during installation.

dracut.module/dracut.conf.in: Add templates for the network related kernel command-line parameter.
installation/env.sh: Change the wendelin reference.

dracut.module/dracut.conf.in

@@ -7,7 +7,8 @@ hostonly_cmdline=no
 #linux /boot/vmlinuz-4.19.0-17-amd64 root=UUID=c962bb70-ee0c-4561-9edd-56c269ef7e51 ro single mitigations=off console=ttyS1,57600
 #kernel_cmdline="root=LABEL=ROOT ip=dhcp rd.neednet=1 ro single mitigations=off console=ttyS1,57600"
 #kernel_cmdline="root=UUID=%ROOT_PARTITION_ID% ip=dhcp rd.neednet=1 ro console=ttyS1,57600"
-kernel_cmdline="root=UUID=%ROOT_PARTITION_ID% ip=195.90.118.203::195.90.118.193:255.255.255.224:douai-capri-009:enp193s0f1np1:off:1.1.1.1:8.8.8.8:130.79.14.172 rd.neednet=1 ro console=ttyS1,57600"
+#kernel_cmdline="root=UUID=%ROOT_PARTITION_ID% ip=195.90.118.203::195.90.118.193:255.255.255.224:douai-capri-009:enp193s0f1np1:off:1.1.1.1:8.8.8.8:130.79.14.172 rd.neednet=1 ro console=ttyS1,57600"
+kernel_cmdline="root=UUID=%ROOT_PARTITION_ID% ip=%DEFAULT_IP%::%DEFAULT_ROUTER%:%FORMATTED_NETMASK%:%HOSTNAME%:%DEFAULT_INTERFACE%:off:1.1.1.1:8.8.8.8:130.79.14.172 rd.neednet=1 ro console=ttyS1,57600"
 #kernel_cmdline="ip=dhcp rd.neednet=1"
 show_modules=yes
 reproducible=yes

installation/env.sh

@@ -13,7 +13,7 @@ FLUENTBIT_VERSION=1-1
 TARGET_DISTRIBUTION=Debian_11
 ARCH=amd64
 PACKAGE_EXTENSION=.deb
-WENDELIN_REFERENCE=douai001-capri009
+WENDELIN_REFERENCE=douai002-capri009
 
 
 # used mainly in dracut.module/configure

installation/install.sh

@@ -22,10 +22,10 @@ get_partition_path () {
 
 	desired_partition_count=$(echo -e "$desired_partitions" | wc | awk '{print $1}')
 	if [ -z "$desired_partitions" ]; then
-		echo -e "No partition of type $1 (shouldbe 1)."
+		echo -e "No partition of type $1 (shouldbe 1). Exiting."
 		exit
 	elif [ "$desired_partition_count" -ne 1 ]; then
-		echo -e "$desired_partition_count partitions of type $1 (should be 1)."
+		echo -e "$desired_partition_count partitions of type $1 (should be 1). Exiting."
 		exit
 	else
 		echo -e "$desired_partitions" | awk '{print $1}'
@@ -37,12 +37,85 @@ get_partition_id () {
 	echo -e "$(findmnt -fn -o UUID "$desired_partition_path")"
 }
 
+get_default_interface () {
+	default_results=$(ip route | grep default | wc | awk '{print $1}')
+	if [ "$default_results" -ne 1 ]; then
+		echo -e "$default_results default result(s) (should be 1). Exiting."
+		exit
+	else
+		echo -e "$(ip route | grep default | sed 's|.*dev \([^ ]*\).*|\1|g')"
+	fi
+}
+
+get_default_router () {
+	default_results=$(ip route | grep default | wc | awk '{print $1'})
+	if [ "$default_results" -ne 1 ]; then
+		echo -e "$defaults_results default result(s) (should be 1). Exiting."
+		exit
+	else
+		echo -e "$(ip route | grep default | sed 's|.*via \([^ ]*\).*|\1|g')"
+	fi
+}
 
+get_default_ip () {
+	default_interface=$(get_default_interface)
+	interface_results=$(ip route | grep -v default | grep "$default_interface" | wc | awk '{print $1}')
+	if [ "$interface_results" -ne 1 ]; then
+		echo -e "$interface_results results for \"${default_interface}\" (should be 1). Exiting."
+		exit
+	else
+		echo -e "$(ip route | grep -v default | grep "$default_interface" | sed 's|.*src \([^ ]*\).*|\1|g')"
+	fi
+}
+
+get_default_netmask () {
+	default_interface=$(get_default_interface)
+	interface_results=$(ip route | grep -v default | grep "$default_interface" | wc | awk '{print $1}')
+	if [ "$interface_results" -ne 1 ]; then
+		echo -e "$interface_results results for \"${default_interface}\" (should be 1). Exiting."
+		exit
+	else
+		echo -e "$(ip route | grep -v default | grep "$default_interface" | sed 's|^\([^ ]*\).*|\1|g')"
+	fi
+}
+
+int_to_generic_netmask () {
+	# get the mask size: the number right after the "/" (ex: <ipv4>/24 -> 24)
+	#mask_length=$(get_default_netmask | awk -F / '{print $2}')
+	mask_length=$1
+	mask=""
+	for i in {0..3}; do
+	#while [ $mask_length -gt 0 ]; do
+		if [ ${mask_length} -ge 8 ]; then
+			mask=${mask}255
+		elif [ ${mask_length} -eq 0 ]; then
+			mask=${mask}0
+		else
+			mask=${mask}$((256-2**(8-${mask_length})))
+		fi
+		if [ $i -ne 3 ]; then
+			mask=${mask}.
+		fi
+		mask_length=$((mask_length-8))
+	done
+	echo -e "${mask}"
+}
+
+# Get information about the partition layout
 root_partition_type="Linux filesystem"
 efi_partition_type="EFI System"
 EFI_PARTITION_MOUNT_POINT=$(get_partition_path "$efi_partition_type")
 ROOT_PARTITION_ID=$(get_partition_id "$root_partition_type")
-default_boot_num=100
+default_bootnum=100
+
+# Get information about the network
+DEFAULT_INTERFACE=$(get_default_interface)
+DEFAULT_ROUTER=$(get_default_router)
+DEFAULT_IP=$(get_default_ip)
+default_netmask=$(get_default_netmask)
+default_netmask_number=$(echo -e "${default_netmask}" | awk -F / '{print $2}')
+FORMATTED_NETMASK=$(int_to_generic_netmask "${default_netmask_number}")
+HOSTNAME=$(hostname)
 
 # Install the module
 cd dracut.module
@@ -52,12 +125,13 @@ make install
 cd -
 
 # Generation of dracut.module/dracut.conf
+dracut_conf_regex="s|%PROJECT_DIR%|${PROJECT_DIR}|g;s|%ROOT_PARTITION_ID%|${ROOT_PARTITION_ID}|g;s|%DEFAULT_INTERFACE%|${DEFAULT_INTERFACE}|g;s|%DEFAULT_ROUTER%|${DEFAULT_ROUTER}|g;s|%DEFAULT_IP%|${DEFAULT_IP}|g;s|%FORMATTED_NETMASK%|${FORMATTED_NETMASK}|g;s|%HOSTNAME%|${HOSTNAME}|g"
 cd dracut.module
-sed "s|%PROJECT_DIR%|${PROJECT_DIR}|g;s|%ROOT_PARTITION_ID%|${ROOT_PARTITION_ID}|g" dracut.conf.in > dracut.conf
+sed "${dracut_conf_regex}" dracut.conf.in > dracut.conf
 cd -
 
-# TMP: Delete bootnum 0 so that there is only one boot option for an image created by this script
-efibootmgr -b "$default_boot_num" -B || true
+# Delete $default_bootnum so that there is only one boot option for an image created by this script
+efibootmgr -b "$default_bootnum" -B || true
 
 # Create an initramfs image
 rm -f $dracut_output_file
@@ -65,11 +139,7 @@ dracut -c ./dracut.module/dracut.conf --force |& tee -a $dracut_output_file
 # the next line parses dracut output and extracts the path of the newly generated image
 uefi_image_name=`grep "Creating image file" $dracut_output_file | sed -E "s|.*$EFI_IMAGE_DIR(.*)'.*|\1|g"`
 
-# Why? The boot manager seems to forget the boot option if this is not done.
-#mkdir -p $TARGET_EFI_DIR
-#cp -rv $SOURCE_EFI_DIR/* $TARGET_EFI_DIR
-
 # Set the image as a boot option
-efibootmgr -b "$default_boot_num" --create --disk $EFI_PARTITION_MOUNT_POINT --label "test_deploy" --loader ${RELATIVE_EFI_IMAGE_DIR}/$uefi_image_name
+efibootmgr -b "$default_bootnum" --create --disk $EFI_PARTITION_MOUNT_POINT --label "test_deploy" --loader ${RELATIVE_EFI_IMAGE_DIR}/$uefi_image_name
 
 echo "New initramfs image: "${EFI_IMAGE_DIR}/$uefi_image_name