repart: Add tests for supplement partitions

test/units/TEST-58-REPART.sh

@@ -29,6 +29,9 @@ if ! systemd-detect-virt --quiet --container; then
     udevadm control --log-level debug
 fi
 
+esp_guid=C12A7328-F81F-11D2-BA4B-00A0C93EC93B
+xbootldr_guid=BC13C2FF-59E6-4262-A352-B275FD6F7172
+
 machine="$(uname -m)"
 if [ "${machine}" = "x86_64" ]; then
     root_guid=4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709
@@ -1432,6 +1435,82 @@ EOF
     systemd-dissect -U "$imgs/mnt"
 }
 
+testcase_fallback_partitions() {
+    local workdir image defs
+
+    workdir="$(mktemp --directory "/tmp/test-repart.fallback.XXXXXXXXXX")"
+    # shellcheck disable=SC2064
+    trap "rm -rf '${workdir:?}'" RETURN
+
+    image="$workdir/image.img"
+    defs="$workdir/defs"
+    mkdir "$defs"
+
+    tee "$defs/10-esp.conf" <<EOF
+[Partition]
+Type=esp
+Format=vfat
+SizeMinBytes=10M
+EOF
+
+    tee "$defs/20-xbootldr.conf" <<EOF
+[Partition]
+Type=xbootldr
+Format=vfat
+SizeMinBytes=100M
+SupplementFor=10-esp
+EOF
+
+    # Blank disk => big ESP should be created
+
+    systemd-repart --empty=create --size=auto --dry-run=no --definitions="$defs" "$image"
+
+    output=$(sfdisk -d "$image")
+    assert_in "${image}1 : start=        2048, size=      204800, type=${esp_guid}" "$output"
+    assert_not_in "${image}2" "$output"
+
+    # Disk with small ESP => ESP grows
+
+    sfdisk "$image" <<EOF
+label: gpt
+size=10M, type=${esp_guid}
+EOF
+
+    systemd-repart --dry-run=no --definitions="$defs" "$image"
+
+    output=$(sfdisk -d "$image")
+    assert_in "${image}1 : start=        2048, size=      204800, type=${esp_guid}" "$output"
+    assert_not_in "${image}2" "$output"
+
+    # Disk with small ESP that can't grow => XBOOTLDR created
+
+    truncate -s 150M "$image"
+    sfdisk "$image" <<EOF
+label: gpt
+size=10M, type=${esp_guid},
+size=10M, type=${root_guid},
+EOF
+
+    systemd-repart --dry-run=no --definitions="$defs" "$image"
+
+    output=$(sfdisk -d "$image")
+    assert_in "${image}1 : start=        2048, size=       20480, type=${esp_guid}" "$output"
+    assert_in "${image}3 : start=       43008, size=      264152, type=${xbootldr_guid}" "$output"
+
+    # Disk with existing XBOOTLDR partition => XBOOTLDR grows, small ESP created
+
+    sfdisk "$image" <<EOF
+label: gpt
+size=10M, type=${xbootldr_guid},
+EOF
+
+    systemd-repart --dry-run=no --definitions="$defs" "$image"
+
+    output=$(sfdisk -d "$image")
+    assert_in "${image}1 : start=        2048, size=      204800, type=${xbootldr_guid}" "$output"
+    assert_in "${image}2 : start=      206848, size=      100312, type=${esp_guid}" "$output"
+}
+
 OFFLINE="yes"
 run_testcases