From c6d18c3c71597e78572378fc4dde391f1845b8bd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Tue, 18 Jan 2022 18:08:42 +0100
Subject: [PATCH 4/6] feat(kernel-install): do nothing when
 $KERNEL_INSTALL_INITRD_GENERATOR says so

dracut may be installed without being actually used. This is very common in
binary distros where a package may be pulled in through dependencies, even
though the user does not need it in a particular setup. KERNEL_INSTALL_INITRD_GENERATOR
is being added in systemd's kernel-install to select which of the possibly many
initrd generation mechanisms will be used.

For backwards compat, if it not set, continue as before. But if set to
something else, skip our kernel-install plugins.

(Cherry-picked commit f47bcdd7342ca0d46b889e712a1c7446e18434bc from PR#1825)
---
 install.d/50-dracut.install        | 31 ++++++------------------------
 install.d/51-dracut-rescue.install | 12 +++++++++---
 2 files changed, 15 insertions(+), 28 deletions(-)

diff --git a/install.d/50-dracut.install b/install.d/50-dracut.install
index 441414ac..efb184cd 100755
--- a/install.d/50-dracut.install
+++ b/install.d/50-dracut.install
@@ -6,38 +6,19 @@ BOOT_DIR_ABS="$3"
 KERNEL_IMAGE="$4"
 
 # If KERNEL_INSTALL_MACHINE_ID is defined but empty, BOOT_DIR_ABS is a fake directory.
-# So, let's skip to create initrd.
+# In this case, do not create the initrd.
 if ! [[ ${KERNEL_INSTALL_MACHINE_ID-x} ]]; then
     exit 0
 fi
 
-# Do not attempt to create initramfs if the supplied image is already a UKI
-if [[ "$KERNEL_INSTALL_IMAGE_TYPE" = "uki" ]]; then
+# Skip this plugin if we're using a different generator. If nothing is specified,
+# assume we're wanted since we're installed.
+if [ "${KERNEL_INSTALL_INITRD_GENERATOR:-dracut}" != "dracut" ]; then
     exit 0
 fi
 
-# Mismatching the install layout and the --uefi/--no-uefi opts just creates a mess.
-if [[ $KERNEL_INSTALL_LAYOUT == "uki" && -n $KERNEL_INSTALL_STAGING_AREA ]]; then
-    BOOT_DIR_ABS="$KERNEL_INSTALL_STAGING_AREA"
-    if [[ -z $KERNEL_INSTALL_UKI_GENERATOR || $KERNEL_INSTALL_UKI_GENERATOR == "dracut" ]]; then
-        # No uki generator preference set or we have been chosen
-        IMAGE="uki.efi"
-        UEFI_OPTS="--uefi"
-    elif [[ -z $KERNEL_INSTALL_INITRD_GENERATOR || $KERNEL_INSTALL_INITRD_GENERATOR == "dracut" ]]; then
-        # We aren't the uki generator, but we have been requested to make the initrd
-        IMAGE="initrd"
-        UEFI_OPTS="--no-uefi"
-    else
-        exit 0
-    fi
-elif [[ $KERNEL_INSTALL_LAYOUT == "bls" && -n $KERNEL_INSTALL_STAGING_AREA ]]; then
-    BOOT_DIR_ABS="$KERNEL_INSTALL_STAGING_AREA"
-    if [[ -z $KERNEL_INSTALL_INITRD_GENERATOR || $KERNEL_INSTALL_INITRD_GENERATOR == "dracut" ]]; then
-        IMAGE="initrd"
-        UEFI_OPTS="--no-uefi"
-    else
-        exit 0
-    fi
+if [[ -d "$BOOT_DIR_ABS" ]]; then
+    INITRD="initrd"
 else
     # No layout information, use users --uefi/--no-uefi preference
     UEFI_OPTS=""
diff --git a/install.d/51-dracut-rescue.install b/install.d/51-dracut-rescue.install
index aa0ccdc5..be4172b5 100755
--- a/install.d/51-dracut-rescue.install
+++ b/install.d/51-dracut-rescue.install
@@ -7,9 +7,15 @@ KERNEL_VERSION="$2"
 BOOT_DIR_ABS="${3%/*}/0-rescue"
 KERNEL_IMAGE="$4"
 
-dropindirs_sort() {
-    suffix=$1
-    shift
+# Skip this plugin if we're using a different generator. If nothing is specified,
+# assume we're wanted since we're installed.
+if [ "${KERNEL_INSTALL_INITRD_GENERATOR:-dracut}" != "dracut" ]; then
+    exit 0
+fi
+
+dropindirs_sort()
+{
+    suffix=$1; shift
     args=("$@")
     files=$(
         while (($# > 0)); do
-- 
2.42.0