build: add proxmox-kernel-X.Y-pve-signed-template

the signed template together with the binary package(s) containing the unsigned files form the input to our secure boot signing service. the signed template consists of - files.json (specifying which files are signed how and by which key) - packaging template used to build the signed package(s) the signing service - extracts and checks the signed-template binary package - extracts the unsigned package(s) - signs the needed files - packs up the signatures + the template contained in the signed-template package into the signed source package the signed source package can then be built in the regular fashion (in case of the kernel packages, it will copy the kernel image, modules and some helper files from the unsigned package, attach the signature created by the signing service, and re-pack the result as signed-kernel package). Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
2023-03-16 10:40:02 +01:00
parent 03c65664fc
commit 2b3d5a2269
6 changed files with 133 additions and 0 deletions
@@ -79,6 +79,13 @@ Description: Proxmox Kernel debug image
 to analyze kernel crashes. This package also contains the proxmox-kernel modules
 in their unstripped version.

+Package: proxmox-kernel-@KVNAME@-signed-template
+Architecture: amd64
+Depends: ${shlibs:Depends}, ${misc:Depends}, make | build-essential | dpkg-dev
+Description: Template for signed kernel package
+ This package is used to control code signing by the Proxmox signing
+ service.
+
 Package: proxmox-kernel-libc-dev
 Section: devel
 Priority: optional
@@ -21,6 +21,8 @@ PMX_KERNEL_SERIES_PKG=proxmox-kernel-$(KERNEL_MAJMIN)
 PMX_DEBUG_KERNEL_PKG=proxmox-kernel-$(KVNAME)-dbgsym
 PMX_HEADER_PKG=proxmox-headers-$(KVNAME)
 PMX_USR_HEADER_PKG=proxmox-kernel-libc-dev
+PMX_KERNEL_SIGNING_TEMPLATE_PKG=proxmox-kernel-${KVNAME}-signed-template
+PMX_KERNEL_SIGNED_VERSION := $(shell echo ${DEB_VERSION} | sed -e 's/-/+/')
 LINUX_TOOLS_PKG=linux-tools-$(KERNEL_MAJMIN)
 KERNEL_SRC_COPY=$(KERNEL_SRC)_tmp

@@ -117,6 +119,17 @@ debian/control: $(wildcard debian/*.in)
 	chmod +x debian/$(PMX_HEADER_PKG).postinst
 	sed -e 's/@KVNAME@/$(KVNAME)/g' -e 's/@KVMAJMIN@/$(KERNEL_MAJMIN)/g' < debian/control.in > debian/control

+	# signing-template
+	sed -e '1 s/proxmox-kernel/proxmox-kernel-signed/' -e '1 s/${DEB_VERSION}/${PMX_KERNEL_SIGNED_VERSION}/' < debian/changelog > debian/signing-template/changelog
+	sed -e 's/@KVNAME@/${KVNAME}/g' -e 's/@KVMAJMIN@/$(KERNEL_MAJMIN)/g' -e 's/@UNSIGNED_VERSION@/${DEB_VERSION}/g' < debian/signing-template/control.in > debian/signing-template/control
+	sed -e 's/@KVNAME@/${KVNAME}/g' < debian/signing-template/files.json.in > debian/signing-template/files.json
+	sed -e 's/@KVNAME@/${KVNAME}/g' -e 's/@PKG_VERSION@/${DEB_VERSION}/' < debian/signing-template/rules.in > debian/signing-template/rules
+	sed -e 's/@@KVNAME@@/${KVNAME}/g' < debian/proxmox-kernel.prerm.in > debian/signing-template/prerm
+	sed -e 's/@@KVNAME@@/${KVNAME}/g' < debian/proxmox-kernel.postrm.in > debian/signing-template/postrm
+	sed -e 's/@@KVNAME@@/${KVNAME}/g' < debian/proxmox-kernel.postinst.in > debian/signing-template/postinst
+	rm debian/signing-template/*.in
+	cp debian/SOURCE debian/signing-template/
+
 build: .compile_mark .tools_compile_mark .modules_compile_mark

 install: .install_mark .tools_install_mark .headers_install_mark .usr_headers_install_mark
@@ -195,6 +208,22 @@ endif
 	cat watchdog-blacklist.tmp|sed -e 's/^/blacklist /' -e 's/.ko$$//'|sort -u > debian/$(PMX_KERNEL_PKG)/lib/modprobe.d/blacklist_$(PMX_KERNEL_PKG).conf
 	rm -f debian/$(PMX_KERNEL_PKG)/lib/modules/$(KVNAME)/source
 	rm -f debian/$(PMX_KERNEL_PKG)/lib/modules/$(KVNAME)/build
+
+	# copy signing template contents
+	rm -rf debian/${PMX_KERNEL_SIGNING_TEMPLATE_PKG}
+	mkdir -p debian/${PMX_KERNEL_SIGNING_TEMPLATE_PKG}/usr/share/code-signing/${PMX_KERNEL_SIGNING_TEMPLATE_PKG}/source-template/debian
+	cp -R debian/copyright \
+		debian/signing-template/rules \
+		debian/signing-template/control \
+		debian/signing-template/source \
+		debian/signing-template/changelog \
+		debian/signing-template/prerm \
+		debian/signing-template/postrm \
+		debian/signing-template/postinst \
+		debian/signing-template/SOURCE \
+		debian/${PMX_KERNEL_SIGNING_TEMPLATE_PKG}/usr/share/code-signing/${PMX_KERNEL_SIGNING_TEMPLATE_PKG}/source-template/debian
+	cp debian/signing-template/files.json debian/${PMX_KERNEL_SIGNING_TEMPLATE_PKG}/usr/share/code-signing/${PMX_KERNEL_SIGNING_TEMPLATE_PKG}/
+
 	touch $@

 .tools_compile_mark: .compile_mark
@@ -0,0 +1,25 @@
+Source: proxmox-kernel-signed-@KVMAJMIN@
+Section: kernel
+Priority: optional
+Maintainer: Proxmox Support Team <support@proxmox.com>
+Standards-Version: 4.2.0
+Build-Depends: debhelper-compat (= 12), dh-exec, python3:any, rsync, sbsigntool, proxmox-kernel-@KVNAME@ (= @UNSIGNED_VERSION@)
+Rules-Requires-Root: no
+Vcs-Git: git://git.proxmox.com/git/pve-kernel
+Vcs-Browser: https://git.proxmox.com/?p=pve-kernel.git
+
+Package: proxmox-kernel-@KVNAME@-signed
+Section: admin
+Priority: optional
+Architecture: any
+Provides: linux-image-@KVNAME@-amd64, proxmox-kernel-@KVNAME@
+Depends: ${unsigned:Depends}, ${misc:Depends}
+Recommends: ${unsigned:Recommends}
+Suggests: ${unsigned:Suggests}
+Breaks: ${unsigned:Breaks}
+Conflicts: proxmox-kernel-@KVNAME@
+Replaces: proxmox-kernel-@KVNAME@
+Description: ${unsigned:DescriptionShort} (signed)
+ ${unsigned:DescriptionLong}
+ .
+ This package contains the kernel image signed by the Proxmox Secure Boot CA.
@@ -0,0 +1,13 @@
+{
+	"packages": {
+		"proxmox-kernel-@KVNAME@": {
+			"trusted_certs": [],
+			"files": [
+				{
+					"sig_type": "efi",
+					"file": "boot/vmlinuz-@KVNAME@"
+				}
+			]
+		}
+	}
+}
@@ -0,0 +1,58 @@
+#!/usr/bin/make -f
+
+SHELL := bash -e
+
+export DH_OPTIONS
+
+include /usr/share/dpkg/architecture.mk
+
+KERNEL_VERSION=@KVNAME@
+IMAGE_PACKAGE_NAME=proxmox-kernel-$(KERNEL_VERSION)
+PACKAGE_NAME=$(IMAGE_PACKAGE_NAME)-signed
+PACKAGE_VERSION=@PKG_VERSION@
+PACKAGE_DIR=debian/$(PACKAGE_NAME)
+SIGNATURE_DIR=debian/signatures/${IMAGE_PACKAGE_NAME}
+
+build: build-arch build-indep
+build-arch:
+build-indep:
+
+clean:
+	dh_testdir
+	dh_clean
+
+binary: binary-arch binary-indep
+binary-arch:
+	dh_testdir
+	mkdir -p $(PACKAGE_DIR)/boot
+	rsync -a $(patsubst %,/boot/%-$(KERNEL_VERSION),config System.map vmlinuz) $(PACKAGE_DIR)/boot/
+	if [ -f $(SIGNATURE_DIR)/boot/vmlinuz-$(KERNEL_VERSION).sig ]; then \
+		sbattach --attach $(SIGNATURE_DIR)/boot/vmlinuz-$(KERNEL_VERSION).sig \
+			$(PACKAGE_DIR)/boot/vmlinuz-$(KERNEL_VERSION); \
+	else \
+		echo "No signature for image 'vmlinuz-$(KERNEL_VERSION)' found in '$(SIGNATURE_DIR)'"; \
+		false; \
+	fi
+	mkdir -p $(PACKAGE_DIR)/lib/modules/$(KERNEL_VERSION)
+	rsync -ar /lib/modules/$(KERNEL_VERSION)/ $(PACKAGE_DIR)/lib/modules/$(KERNEL_VERSION)/
+	mkdir -p $(PACKAGE_DIR)/lib/modprobe.d/
+	cp /lib/modprobe.d/blacklist_$(IMAGE_PACKAGE_NAME).conf $(PACKAGE_DIR)/lib/modprobe.d/
+	dh_install
+	dh_installchangelogs
+	dh_installdocs -A debian/copyright debian/SOURCE
+	dh_lintian
+	dh_compress
+	dh_fixperms
+	dh_installdeb
+	# Copy most package relations and description from unsigned package
+	for field in Depends Suggests Recommends Breaks; do \
+		echo >> debian/$(PACKAGE_NAME).substvars "unsigned:$$field=$$(dpkg-query -f '$${'$$field'}' -W $(IMAGE_PACKAGE_NAME))"; \
+	done
+	echo >> debian/$(PACKAGE_NAME).substvars "unsigned:DescriptionShort=$$(dpkg-query -f '$${Description}' -W $(IMAGE_PACKAGE_NAME) | head -n 1)"
+	echo >> debian/$(PACKAGE_NAME).substvars "unsigned:DescriptionLong=$$(dpkg-query -f '$${Description}' -W $(IMAGE_PACKAGE_NAME) | tail -n +2 | sed -rz 's/\$$/$${}/g; s/^ //; s/\n \.?/$${Newline}/g')"
+	dh_gencontrol -- -v$(PACKAGE_VERSION)
+	dh_md5sums
+	dh_builddeb
+binary-indep:
+
+.PHONY: build build-arch build-indep clean binary binary-arch binary-indep
@@ -0,0 +1 @@
+3.0 (native)