From nobody Mon Feb 9 06:00:10 2026 Received: from mailgw01.zimbra-vnc.de (mailgw01.zimbra-vnc.de [148.251.101.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 314DE28643C; Mon, 26 Jan 2026 19:35:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.101.236 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769456139; cv=none; b=nX+M8pJkyoA1m+rhIaC77U9V7IpWXg/Om2yHtJx2dpl5f0Yy3FHWO2K+Y/SuOFGk4N6oqmadqx9DuO0QqKfvPpa+ReqmY62/Ff6r+XwByS+4VStxJojE83KkDBeNLXdUKGMknNLMz+FJGalo6MN0hhOBqr1yyiIZZ3GS0qt8RyU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769456139; c=relaxed/simple; bh=cFNZRlIxT/34gp+dzxMA1w3STtnbLv+SCBygP3i6rMc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=mQ15+O+pwDJSf52uXV/1BVrdFaZvcln0oh9uWr/9Z0Dys5dmrrp8EG7ehC7dYvRWDYdxpmRSzRLdLgXIuNEcaBma4qezWLfac4c9oyvFXThRwYj6NMxumGbkBHJroghElTIw0DJasPJ+YVAmSDKgKqCYmwqd9cWcyhHm7zHU5Qc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=tngtech.com; spf=pass smtp.mailfrom=tngtech.com; dkim=pass (2048-bit key) header.d=tngtech.com header.i=@tngtech.com header.b=RllAyyu0; arc=none smtp.client-ip=148.251.101.236 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=tngtech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=tngtech.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tngtech.com header.i=@tngtech.com header.b="RllAyyu0" Received: from zmproxy.tng.vnc.biz (zimbra-vnc.tngtech.com [35.234.71.156]) by mailgw01.zimbra-vnc.de (Postfix) with ESMTPS id 45D743FAF9; Mon, 26 Jan 2026 20:35:31 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zmproxy.tng.vnc.biz (Postfix) with ESMTP id EC1431FA7B4; Mon, 26 Jan 2026 20:35:29 +0100 (CET) Received: from zmproxy.tng.vnc.biz ([127.0.0.1]) by localhost (zmproxy.tng.vnc.biz [127.0.0.1]) (amavis, port 10032) with ESMTP id 2QXBqrsOoFCz; Mon, 26 Jan 2026 20:35:29 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zmproxy.tng.vnc.biz (Postfix) with ESMTP id 45A251FA703; Mon, 26 Jan 2026 20:35:29 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.10.3 zmproxy.tng.vnc.biz 45A251FA703 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tngtech.com; s=B14491C6-869D-11EB-BB6C-8DD33D883B31; t=1769456129; bh=dZL1JaPMNMR+B1ET/+Ix+NpqGkk7K7L1IuuIEqfp/f0=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=RllAyyu08j3M9etTa7cZxkZHdKWEcGeuTFMs0AsjSLqInN5TFubJLiTiA4np0TvVq eEaiKZSxRvWcFsdyZRtgYXQ0HIAqxVMoEBGgHvik7Ga0ZY5vJ0FoQxDBj7a+b5hluq cDRshHaBuqQPUzyk1KWUmu8U4cjbeIXpKFVMnCvL7iSUDcnNapBEY1zUOzrv8zY9bg /kt7b38xad7R2gD5kdjrKwxSDxQQgiVAfhX8iE4SQNwt2OWY9pXrFVaIoqBFvyZXXM 7PkcEvJFHMJMRMlA2u1XmmCKCsIFzwBZ+KyEHdjUrlqO0p++FiuJJe5KqvHCBqLrUq 3+4KrHwT8GikQ== X-Virus-Scanned: amavis at zmproxy.tng.vnc.biz Received: from zmproxy.tng.vnc.biz ([127.0.0.1]) by localhost (zmproxy.tng.vnc.biz [127.0.0.1]) (amavis, port 10026) with ESMTP id SN6NnRY4-hPo; Mon, 26 Jan 2026 20:35:29 +0100 (CET) Received: from DESKTOP-0O0JV6I.localdomain (ipservice-092-208-231-176.092.208.pools.vodafone-ip.de [92.208.231.176]) by zmproxy.tng.vnc.biz (Postfix) with ESMTPSA id CF7CE1FA6D0; Mon, 26 Jan 2026 20:35:28 +0100 (CET) From: Luis Augenstein To: nathan@kernel.org, nsc@kernel.org Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, gregkh@linuxfoundation.org, maximilian.huber@tngtech.com, Luis Augenstein Subject: [PATCH v3 11/14] tools/sbom: add SPDX source graph Date: Mon, 26 Jan 2026 20:33:01 +0100 Message-Id: <20260126193304.320916-12-luis.augenstein@tngtech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260126193304.320916-1-luis.augenstein@tngtech.com> References: <20260126193304.320916-1-luis.augenstein@tngtech.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Implement the SPDX source graph which contains all source files involved during the build, along with the licensing information for each file. Co-developed-by: Maximilian Huber Signed-off-by: Maximilian Huber Signed-off-by: Luis Augenstein --- .../sbom/sbom/spdx_graph/build_spdx_graphs.py | 8 ++ .../sbom/sbom/spdx_graph/spdx_source_graph.py | 126 ++++++++++++++++++ 2 files changed, 134 insertions(+) create mode 100644 tools/sbom/sbom/spdx_graph/spdx_source_graph.py diff --git a/tools/sbom/sbom/spdx_graph/build_spdx_graphs.py b/tools/sbom/s= bom/spdx_graph/build_spdx_graphs.py index 2af0fbe6cdbe..a61257a905f3 100644 --- a/tools/sbom/sbom/spdx_graph/build_spdx_graphs.py +++ b/tools/sbom/sbom/spdx_graph/build_spdx_graphs.py @@ -10,6 +10,7 @@ from sbom.path_utils import PathStr from sbom.spdx_graph.kernel_file import KernelFileCollection from sbom.spdx_graph.spdx_graph_model import SpdxGraph, SpdxIdGeneratorCol= lection from sbom.spdx_graph.shared_spdx_elements import SharedSpdxElements +from sbom.spdx_graph.spdx_source_graph import SpdxSourceGraph from sbom.spdx_graph.spdx_output_graph import SpdxOutputGraph =20 =20 @@ -54,4 +55,11 @@ def build_spdx_graphs( KernelSpdxDocumentKind.OUTPUT: output_graph, } =20 + if len(kernel_files.source) > 0: + spdx_graphs[KernelSpdxDocumentKind.SOURCE] =3D SpdxSourceGraph.cre= ate( + source_files=3Dlist(kernel_files.source.values()), + shared_elements=3Dshared_elements, + spdx_id_generators=3Dspdx_id_generators, + ) + return spdx_graphs diff --git a/tools/sbom/sbom/spdx_graph/spdx_source_graph.py b/tools/sbom/s= bom/spdx_graph/spdx_source_graph.py new file mode 100644 index 000000000000..16176c4ea5ee --- /dev/null +++ b/tools/sbom/sbom/spdx_graph/spdx_source_graph.py @@ -0,0 +1,126 @@ +# SPDX-License-Identifier: GPL-2.0-only OR MIT +# Copyright (C) 2025 TNG Technology Consulting GmbH + +from dataclasses import dataclass +from sbom.spdx import SpdxIdGenerator +from sbom.spdx.core import Element, NamespaceMap, Relationship, SpdxDocume= nt +from sbom.spdx.simplelicensing import LicenseExpression +from sbom.spdx.software import File, Sbom +from sbom.spdx_graph.kernel_file import KernelFile +from sbom.spdx_graph.shared_spdx_elements import SharedSpdxElements +from sbom.spdx_graph.spdx_graph_model import SpdxGraph, SpdxIdGeneratorCol= lection + + +@dataclass +class SpdxSourceGraph(SpdxGraph): + """SPDX graph representing source files""" + + @classmethod + def create( + cls, + source_files: list[KernelFile], + shared_elements: SharedSpdxElements, + spdx_id_generators: SpdxIdGeneratorCollection, + ) -> "SpdxSourceGraph": + """ + Args: + source_files: List of files within the kernel source tree. + shared_elements: Shared SPDX elements used across multiple doc= uments. + spdx_id_generators: Collection of SPDX ID generators. + + Returns: + SpdxSourceGraph: The SPDX source graph. + """ + # SpdxDocument + source_spdx_document =3D SpdxDocument( + spdxId=3Dspdx_id_generators.source.generate(), + profileConformance=3D["core", "software", "simpleLicensing"], + namespaceMap=3D[ + NamespaceMap(prefix=3Dgenerator.prefix, namespace=3Dgenera= tor.namespace) + for generator in [spdx_id_generators.source, spdx_id_gener= ators.base] + if generator.prefix is not None + ], + ) + + # Sbom + source_sbom =3D Sbom( + spdxId=3Dspdx_id_generators.source.generate(), + software_sbomType=3D["source"], + ) + + # Src Tree Elements + src_tree_element =3D File( + spdxId=3Dspdx_id_generators.source.generate(), + name=3D"$(src_tree)", + software_fileKind=3D"directory", + ) + src_tree_contains_relationship =3D Relationship( + spdxId=3Dspdx_id_generators.source.generate(), + relationshipType=3D"contains", + from_=3Dsrc_tree_element, + to=3D[], + ) + + # Source file elements + source_file_elements: list[Element] =3D [file.spdx_file_element fo= r file in source_files] + + # Source file license elements + source_file_license_identifiers, source_file_license_relationships= =3D source_file_license_elements( + source_files, spdx_id_generators.source + ) + + # Update relationships + source_spdx_document.rootElement =3D [source_sbom] + source_sbom.rootElement =3D [src_tree_element] + source_sbom.element =3D [ + src_tree_element, + src_tree_contains_relationship, + *source_file_elements, + *source_file_license_identifiers, + *source_file_license_relationships, + ] + src_tree_contains_relationship.to =3D source_file_elements + + source_graph =3D SpdxSourceGraph( + source_spdx_document, + shared_elements.agent, + shared_elements.creation_info, + source_sbom, + ) + return source_graph + + +def source_file_license_elements( + source_files: list[KernelFile], spdx_id_generator: SpdxIdGenerator +) -> tuple[list[LicenseExpression], list[Relationship]]: + """ + Creates SPDX license expressions and links them to the given source fi= les + via hasDeclaredLicense relationships. + + Args: + source_files: List of files within the kernel source tree. + spdx_id_generator: Generator for unique SPDX IDs. + + Returns: + Tuple of (license expressions, hasDeclaredLicense relationships). + """ + license_expressions: dict[str, LicenseExpression] =3D {} + for file in source_files: + if file.license_identifier is None or file.license_identifier in l= icense_expressions: + continue + license_expressions[file.license_identifier] =3D LicenseExpression( + spdxId=3Dspdx_id_generator.generate(), + simplelicensing_licenseExpression=3Dfile.license_identifier, + ) + + source_file_license_relationships =3D [ + Relationship( + spdxId=3Dspdx_id_generator.generate(), + relationshipType=3D"hasDeclaredLicense", + from_=3Dfile.spdx_file_element, + to=3D[license_expressions[file.license_identifier]], + ) + for file in source_files + if file.license_identifier is not None + ] + return ([*license_expressions.values()], source_file_license_relations= hips) --=20 2.34.1