From b22d90e59438481b421b1eb2449e6efdfb7f2118 Mon Sep 17 00:00:00 2001
From: Frantisek Sumsal <frantisek@sumsal.cz>
Date: Thu, 26 May 2022 13:19:11 +0200
Subject: [PATCH] test: generate a custom initrd for TEST-24 if $INITRD is
 unset

Co-Authored-By: Yu Watanabe <watanabe.yu+github@gmail.com>
---
 test/TEST-24-CRYPTSETUP/test.sh | 24 ++++++++++++++++++++++++
 test/test-functions             |  5 +++++
 2 files changed, 29 insertions(+)

diff --git a/test/TEST-24-CRYPTSETUP/test.sh b/test/TEST-24-CRYPTSETUP/test.sh
index a52848b..c18f4aa 100755
--- a/test/TEST-24-CRYPTSETUP/test.sh
+++ b/test/TEST-24-CRYPTSETUP/test.sh
@@ -64,6 +64,30 @@ EOF
     # Forward journal messages to the console, so we have something
     # to investigate even if we fail to mount the encrypted /var
     echo ForwardToConsole=yes >> "$initdir/etc/systemd/journald.conf"
+
+    # If $INITRD wasn't provided explicitly, generate a custom one with dm-crypt
+    # support
+    if [[ -z "$INITRD" ]]; then
+        INITRD="${TESTDIR:?}/initrd.img"
+        dinfo "Generating a custom initrd with dm-crypt support in '${INITRD:?}'"
+
+        if command -v dracut >/dev/null; then
+            dracut --force --verbose --add crypt "$INITRD"
+        elif command -v mkinitcpio >/dev/null; then
+            mkinitcpio --addhooks sd-encrypt --generate "$INITRD"
+        elif command -v mkinitramfs >/dev/null; then
+            # The cryptroot hook is provided by the cryptsetup-initramfs package
+            if ! dpkg-query -s cryptsetup-initramfs; then
+                derror "Missing 'cryptsetup-initramfs' package for dm-crypt support in initrd"
+                return 1
+            fi
+
+            mkinitramfs -o "$INITRD"
+        else
+            dfatal "Unrecognized initrd generator, can't continue"
+            return 1
+        fi
+    fi
 }
 
 cleanup_root_var() {
diff --git a/test/test-functions b/test/test-functions
index bef87ca..0239bbc 100644
--- a/test/test-functions
+++ b/test/test-functions
@@ -325,6 +325,11 @@ qemu_min_version() {
 # Return 0 if QEMU did run (then you must check the result state/logs for actual
 # success), or 1 if QEMU is not available.
 run_qemu() {
+    # If the test provided its own initrd, use it (e.g. TEST-24)
+    if [[ -z "$INITRD" && -f "${TESTDIR:?}/initrd.img" ]]; then
+        INITRD="$TESTDIR/initrd.img"
+    fi
+
     if [ -f /etc/machine-id ]; then
         read -r MACHINE_ID </etc/machine-id
         [ -z "$INITRD" ] && [ -e "$EFI_MOUNT/$MACHINE_ID/$KERNEL_VER/initrd" ] \
-- 
2.33.0

