[PATCH v2] meta/classes: generate bill of material from image

["Q. Gylstorff" <Quirin.Gylstorff@siemens.com>]

From: Quirin Gylstorff <quirin.gylstorff@siemens.com>

To create products it is necessary to have a list
of used packages for clearance and to security monitoring.
To get a simple list of packages use dpkg-query and generate
a list with the following pattern:

source name| source version | binary package name | binary version

The list is stored in ${IMAGE_FULLNAME}.rootfs.manifest

Remove the feature with:
ROOTFS_FEATURES_remove = "generate-manifest"

Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com>
---
 meta/classes/image-package-list-extension.bbclass | 13 +++++++++++++
 meta/classes/image.bbclass                        |  3 ++-
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 meta/classes/image-package-list-extension.bbclass

diff --git a/meta/classes/image-package-list-extension.bbclass b/meta/classes/image-package-list-extension.bbclass
new file mode 100644
index 0000000..c746397
--- /dev/null
+++ b/meta/classes/image-package-list-extension.bbclass
@@ -0,0 +1,13 @@
+# This software is a part of ISAR.
+# Copyright (C) Siemens AG, 2019
+#
+# SPDX-License-Identifier: MIT
+
+image_generate_manifest[dirs] = "${DEPLOY_DIR_IMAGE}"
+image_generate_manifest() {
+      dpkg-query --admindir=${IMAGE_ROOTFS}/var/lib/dpkg/ \
+          -f '${source:Package}|${source:Version}|${binary:Package}|${Version}\n' -W > \
+          ${DEPLOY_DIR_IMAGE}/${IMAGE_FULLNAME}.rootfs.manifest
+}
+ROOTFS_POSTPROCESS_COMMAND += "${@bb.utils.contains('ROOTFS_FEATURES', 'generate-manifest', 'image_generate_manifest', '', d)}"
+
diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index ec6bd39..60dd9fb 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -58,7 +58,7 @@ image_do_mounts() {
 }
 
 ROOTFSDIR = "${IMAGE_ROOTFS}"
-ROOTFS_FEATURES += "copy-package-cache clean-package-cache finalize-rootfs"
+ROOTFS_FEATURES += "copy-package-cache clean-package-cache finalize-rootfs generate-manifest"
 ROOTFS_PACKAGES += "${IMAGE_PREINSTALL} ${IMAGE_INSTALL}"
 
 inherit rootfs
@@ -68,6 +68,7 @@ inherit image-tools-extension
 inherit image-postproc-extension
 inherit image-locales-extension
 inherit image-account-extension
+inherit image-package-list-extension
 
 # Extra space for rootfs in MB
 ROOTFS_EXTRA ?= "64"
-- 
2.20.1