find cloud-init on cdrom by label

Signed-off-by: Avi Deitcher <avi@deitcher.net>

test/cases/040_packages/008_metadata/000_cidata/check.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+set -x
+
+function failed {
+	printf "metadata test suite FAILED\n" >&1
+	exit 1
+}
+
+DEVICE=/dev/sdb
+
+[ -f /run/config/provider ] || failed
+[ "$(cat /run/config/provider)" = "CDROM ${DEVICE}" ] || failed
+[ -f /run/config/userdata ] || failed
+grep -q supersecret /run/config/userdata || failed
+printf "metadata test suite PASSED\n" >&1

test/cases/040_packages/008_metadata/000_cidata/geniso.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# script to generate the iso image we use here
+set -ex
+
+apk --update add cdrkit >&2
+
+# generate our cdrom image
+cd /tmp;
+{ echo instance-id: iid-local01; echo local-hostname: cloudimg; } > meta-data
+printf '{"file1": {"perm": "0644","content": "abcdefg"}, "file2": {"perm": "0700", "content": "supersecret"}}' > user-data
+genisoimage  -output - -volid cidata -joliet -rock user-data meta-data

test/cases/040_packages/008_metadata/000_cidata/test.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+# SUMMARY: Check that the userdata is found and read when on a cidata partition
+# LABELS:
+# REPEAT:
+
+set -ex
+
+# Source libraries. Uncomment if needed/defined
+#. "${RT_LIB}"
+. "${RT_PROJECT_ROOT}/_lib/lib.sh"
+
+NAME=metadata
+DISK=disk.img
+
+clean_up() {
+	rm -rf ${NAME}-* ${DISK}
+}
+trap clean_up EXIT
+
+# Test code goes here
+
+# generate our cdrom image
+ISOFILE=/tmp/cidata.iso
+
+docker run -i --rm -v $(pwd)/geniso.sh:/geniso.sh:ro alpine:3.11 /geniso.sh > ${ISOFILE}
+
+linuxkit build -format kernel+initrd -name ${NAME} test.yml
+RESULT="$(linuxkit run -disk file=${DISK},size=32M -disk file=${ISOFILE} ${NAME})"
+echo "${RESULT}"
+echo "${RESULT}" | grep -q "suite PASSED"
+
+exit 0

test/cases/040_packages/008_metadata/000_cidata/test.yml

@@ -0,0 +1,25 @@
+kernel:
+  image: linuxkit/kernel:5.4.30
+  cmdline: "console=ttyS0 console=ttyAMA0"
+init:
+  - linuxkit/init:7195dc244cd92af01fd0895fd204249a6114c5e2
+  - linuxkit/runc:f79954950022fea76b8b6f10de58cb48e4fb3878
+onboot:
+  - name: metadata
+    image: linuxkit/metadata:dc5bcfa45946053145391ceabe33729c8b9507a1
+  - name: test
+    image: alpine:3.11
+    binds:
+      - /check.sh:/check.sh
+      - /run:/run
+    command: ["sh", "./check.sh"]
+  - name: poweroff
+    image: linuxkit/poweroff:06dd4e46c62fbe79123a028835c921f80e4855d3
+    command: ["/bin/sh", "/poweroff.sh", "10"]
+files:
+  - path: check.sh
+    source: ./check.sh
+trust:
+  org:
+    - linuxkit
+    - library