Add maintainer scripts to the template packagesdebian/15.4-3

Manage installing and removing fbXXX.efi and mmXXX.efi when we
install/remove the shim-helpers-$arch-signed packages. Closes: #966845

2 files changed, 134 insertions, 0 deletions

diff --git a/debian/signing-template/@final_pkg_name@.postinst.in b/debian/signing-template/@final_pkg_name@.postinst.in
new file mode 100644
index 00000000..6da2a3d8
--- /dev/null
+++ b/debian/signing-template/@final_pkg_name@.postinst.in
@@ -0,0 +1,81 @@
+#! /bin/sh
+set -e
+
+# Must load the confmodule for our template to be installed correctly.
+. /usr/share/debconf/confmodule
+
+# Select the right target architecture for grub-install
+ARCH=@arch@
+case ${ARCH} in
+    i386|amd64)
+	FW_SIZE=$(cat /sys/firmware/efi/fw_platform_size)
+	if [ "$FW_SIZE"x = "32"x ]; then
+	    GRUB_EFI_TARGET="i386-efi"
+	elif [ "$FW_SIZE"x = "64"x ]; then
+	    GRUB_EFI_TARGET="x86_64-efi"
+	else
+	    echo "Unable to read a valid value from fw_platform_size, ABORT"
+	    exit 1
+	fi
+	;;
+    arm64)
+	GRUB_EFI_TARGET="arm64-efi"
+	;;
+    *)
+	echo "Unsupported dpkg architecture ${ARCH} in $0. ABORT"
+	exit 1
+	;;
+esac
+
+# Pull out a config value from /etc/default/grub
+config_item ()
+{
+    if [ -f /etc/default/grub ]; then
+	. /etc/default/grub || return
+	for x in /etc/default/grub.d/*.cfg; do
+	    if [ -e "$x" ]; then
+		. "$x"
+	    fi
+	done
+    fi
+    eval echo "\$$1"
+}
+
+case $1 in
+    configure)
+	bootloader_id="$(config_item GRUB_DISTRIBUTOR | tr A-Z a-z | \
+			 cut -d' ' -f1)"
+	case $bootloader_id in
+	    kubuntu) bootloader_id=ubuntu ;;
+	esac
+
+	# Call grub-install to make sure we're added to the ESP as
+	# needed
+	if [ "$bootloader_id" ] && \
+	   [ -d "/boot/efi/EFI/$bootloader_id" ] && \
+	   [ -d /sys/firmware/efi ] && \
+	   which grub-install >/dev/null 2>&1
+	then
+	    # Check for some of the options that matter, so we can
+	    # call grub-install safely without dropping them
+	    OPTIONS=""
+
+	    db_get grub2/force_efi_extra_removable
+	    if [ "$RET" = true ]; then
+		OPTIONS="$OPTIONS --force-extra-removable"
+	    fi
+
+	    db_get grub2/update_nvram
+	    if [ "$RET" = false ]; then
+		OPTIONS="$OPTIONS --no-nvram"
+	    fi
+
+	    grub-install --target=${GRUB_EFI_TARGET} $OPTIONS
+	fi
+	;;
+esac
+
+#DEBHELPER#
+
+exit 0
+
diff --git a/debian/signing-template/@final_pkg_name@.postrm.in b/debian/signing-template/@final_pkg_name@.postrm.in
new file mode 100644
index 00000000..cd261b15
--- /dev/null
+++ b/debian/signing-template/@final_pkg_name@.postrm.in
@@ -0,0 +1,53 @@
+#! /bin/sh
+set -e
+
+case @arch@ in
+    i386)
+	SHIM_REMOVE="mmia32.efi fbia32.efi";;
+    amd64)
+	SHIM_REMOVE="mmx64.efi fbx64.efi";;
+    arm64)
+	SHIM_REMOVE="mmaa64.efi fbaa64.efi";;
+    *)
+	echo "Unsupported dpkg architecture @arch@ in $0. ABORT"
+	exit 1
+	;;
+esac
+
+# Pull out a config value from /etc/default/grub
+config_item ()
+{
+    if [ -f /etc/default/grub ]; then
+	. /etc/default/grub || return
+	for x in /etc/default/grub.d/*.cfg; do
+	    if [ -e "$x" ]; then
+		. "$x"
+	    fi
+	done
+    fi
+    eval echo "\$$1"
+}
+
+case $1 in
+    remove|purge)
+	bootloader_id="$(config_item GRUB_DISTRIBUTOR | tr A-Z a-z | \
+			 cut -d' ' -f1)"
+	case $bootloader_id in
+	    kubuntu) bootloader_id=ubuntu ;;
+	esac
+
+	# If we're being removed, remove the copies installed in the
+	# ESP. grub-install doesn't clean those up for us.
+	if [ "$bootloader_id" ] && \
+	   [ -d "/boot/efi/EFI/$bootloader_id" ] && \
+	   [ -d /sys/firmware/efi ]; then
+
+	    cd /boot/efi/EFI/$bootloader_id
+	    rm -f $SHIM_REMOVE
+	fi
+	;;
+esac
+
+#DEBHELPER#
+
+exit 0