Implement kernel signing

files/scripts/installnvidiakmod.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+
+# Copyright 2025 Universal Blue
+# Copyright 2025 The Secureblue Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and limitations under the License.
+
+set -oue pipefail
+
+mkdir -p /var/tmp
+chmod 1777 /var/tmp
+
+KERNEL_VERSION="$(rpm -q "kernel" --queryformat '%{VERSION}-%{RELEASE}.%{ARCH}')"
+RELEASE="$(rpm -E '%fedora.%_arch')"
+KERNEL_MODULE_TYPE="kernel"
+if [[ "$IMAGE_NAME" == *"open"* ]]; then
+    KERNEL_MODULE_TYPE+="-open"
+fi
+
+curl -Lo /etc/yum.repos.d/negativo17-fedora-nvidia.repo https://negativo17.org/repos/fedora-nvidia.repo
+sed -i '/^enabled=1/a\priority=90' /etc/yum.repos.d/negativo17-fedora-nvidia.repo
+
+dnf install -y "kernel-devel-matched-$(rpm -q 'kernel' --queryformat '%{VERSION}')"
+dnf install -y "akmod-nvidia*.fc${RELEASE}"
+
+
+echo "Setting kernel.conf to $KERNEL_MODULE_TYPE"
+sed -i --sandbox "s/^MODULE_VARIANT=.*/MODULE_VARIANT=$KERNEL_MODULE_TYPE/" /etc/nvidia/kernel.conf
+
+echo "Installing kmod..."
+akmods --force --kernels "${KERNEL_VERSION}" --kmod "nvidia"
+
+# Depends on word splitting
+# shellcheck disable=SC2086
+modinfo /usr/lib/modules/${KERNEL_VERSION}/extra/nvidia/nvidia{,-drm,-modeset,-peermem,-uvm}.ko.xz > /dev/null || \
+    (cat "/var/cache/akmods/nvidia/*.failed.log" && exit 1)
+
+# View license information
+# Depends on word splitting
+# shellcheck disable=SC2086
+modinfo -l /usr/lib/modules/${KERNEL_VERSION}/extra/nvidia/nvidia{,-drm,-modeset,-peermem,-uvm}.ko.xz
+
+./signmodules.sh "nvidia"
+
+rm -f /etc/yum.repos.d/negativo17-fedora-nvidia.repo
+
+systemctl disable akmods-keygen@akmods-keygen.service
+systemctl mask akmods-keygen@akmods-keygen.service
+systemctl disable akmods-keygen.target
+systemctl mask akmods-keygen.target

files/scripts/installnvidiapackages.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+# Copyright 2025 The Secureblue Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and limitations under the License.
+
+set -oue pipefail
+
+nvidia_packages_list=('nvidia-container-toolkit' 'nvidia-driver-cuda')
+if [[ "$IMAGE_NAME" != *"securecore"* ]]; then
+    nvidia_packages_list+=('libnvidia-fbc' 'libva-nvidia-driver' 'nvidia-driver' 'nvidia-modprobe' 'nvidia-persistenced' 'nvidia-settings')
+fi
+
+curl -L https://nvidia.github.io/libnvidia-container/stable/rpm/nvidia-container-toolkit.repo \
+    -o /etc/yum.repos.d/nvidia-container-toolkit.repo
+sed -i 's/^gpgcheck=0/gpgcheck=1/' /etc/yum.repos.d/nvidia-container-toolkit.repo
+
+curl -L https://negativo17.org/repos/fedora-nvidia.repo -o /etc/yum.repos.d/negativo17-fedora-nvidia.repo
+
+
+sed -i 's/^enabled=0.*/enabled=1/' /etc/yum.repos.d/nvidia-container-toolkit.repo
+sed -i 's/^enabled=0.*/enabled=1\npriority=90/' /etc/yum.repos.d/negativo17-fedora-nvidia.repo
+# required for rpm-ostree to function properly
+# shellcheck disable=SC2068
+rpm-ostree install ${nvidia_packages_list[@]}
+
+kmod_version=$(rpm -qa | grep akmod-nvidia | awk -F':' '{print $(NF)}' | awk -F'-' '{print $(NF-1)}')
+negativo_version=$(rpm -qa | grep nvidia-modprobe | awk -F':' '{print $(NF)}' | awk -F'-' '{print $(NF-1)}')
+
+echo "kmod_version: ${kmod_version}"
+echo "negativo_version: ${negativo_version}"
+if [[ "$kmod_version" != "$negativo_version" ]]; then
+    echo "Version mismatch!"
+    exit 1
+fi
+
+curl -L https://raw.githubusercontent.com/NVIDIA/dgx-selinux/master/bin/RHEL9/nvidia-container.pp \
+    -o nvidia-container.pp
+semodule -i nvidia-container.pp
+
+rm -f nvidia-container.pp
+rm -f /etc/yum.repos.d/negativo17-fedora-nvidia.repo
+rm -f /etc/yum.repos.d/nvidia-container-toolkit.repo

files/scripts/signkernel.sh

@@ -17,8 +17,7 @@ set -oue pipefail
 
 KERNEL_VERSION="$(rpm -q "kernel" --queryformat '%{VERSION}-%{RELEASE}.%{ARCH}')"
 
-PUBLIC_KEY_DER_PATH="../system/etc/pki/akmods/certs/akmods-secureblue.der"
-PUBLIC_KEY_CRT_PATH="./certs/public_key.crt"
+PUBLIC_KEY_CRT_PATH="/tmp/certs/public_key.crt"
 PRIVATE_KEY_PATH="/tmp/certs/private_key.priv"
 
 openssl x509 -in "$PUBLIC_KEY_DER_PATH" -out "$PUBLIC_KEY_CRT_PATH"

files/scripts/signmodules.sh

@@ -23,13 +23,12 @@ fi
 
 KERNEL_VERSION="$(rpm -q "kernel" --queryformat '%{VERSION}-%{RELEASE}.%{ARCH}')"
 
-PUBLIC_KEY_DER_PATH="../system/etc/pki/akmods/certs/akmods-secureblue.der"
-PUBLIC_KEY_CRT_PATH="./certs/public_key.crt"
+PUBLIC_KEY_CRT_PATH="/tmp/certs/public_key.crt"
 PRIVATE_KEY_PATH="/tmp/certs/private_key.priv"
 openssl x509 -in "$PUBLIC_KEY_DER_PATH" -out "$PUBLIC_KEY_CRT_PATH"
 
 PRIVATE_KEY_PATH="/tmp/certs/private_key.priv"
-SIGNING_KEY="./certs/signing_key.pem"
+SIGNING_KEY="/tmp/certs/signing_key.pem"
 cat "$PRIVATE_KEY_PATH" <(echo) "$PUBLIC_KEY_CRT_PATH" >> "$SIGNING_KEY"
 
 for module in /usr/lib/modules/"${KERNEL_VERSION}"/extra/"${MODULE_NAME}"/*.ko*; do