125 lines
4.2 KiB
Bash
125 lines
4.2 KiB
Bash
#!/bin/bash
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## Script is designed to streamline the self-compilation process for the end-user.
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## This entails staging linux-hardened, pulling PlagueOS kernel configuration, fingerprinting hardware, then compiling the minimalist kernel.
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## Main benefit of self-compilation is you are not reliant on the upstream hardened configuration that must support various classes of hardware.
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### This kernel is your own.
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# Ensure /boot is writeable
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mount -o remount,rw /boot
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# Set Kernel Version (KVER)
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function set_kver() {
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echo "Enter the kernel version to use (e.g., '6.6.18-hardened1'):"
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while true; do
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read -e -i "${KVER:-}" -p "" KVER
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if [[ $(echo $KVER | grep -E '^[0-9]+\.[0-9]+\.[0-9]+(-hardened1)$') == '' ]]; then
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echo "Invalid format.";
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else
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break;
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fi
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done
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}
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# Invoke function to prompt end-user for desired version (must be an active release in the Anthraxx Linux-Hardened repository)
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set_kver
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# Dependencies
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declare -A osInfo
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osInfo[/etc/void-release]="xbps"
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osInfo[/etc/fedora-release]="dnf"
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osInfo[/etc/debian_version]="apt-get"
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echo "Package manager: $package_manager"
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for f in ${!osInfo[@]}
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do
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if [[ -f $f ]]; then
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package_manager=${osInfo[$f]}
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if [[ $package_manager == "xbps" ]]; then
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xbps-install -Sy make gcc xz elfutils elfutils-devel flex ncurses-devel openssl openssl-devel argp-standalone gcc-ada mpc libmpc-devel gmp-devel perl
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elif [[ $package_manager == "dnf" ]]; then
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sudo dnf install binutils /usr/include/{libelf.h,openssl/pkcs7.h} \
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/usr/bin/{bc,bison,flex,gcc,git,openssl,make,perl,pahole,zstd}
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elif [[ $package_manager == "apt-get" ]]; then
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sudo apt-get install build-essential linux-source bc kmod cpio flex libncurses5-dev libelf-dev libssl-dev dwarves bison
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fi
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fi
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done
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# Staging w/ error handling
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# Pull down Anthraxx linux-hardened upstream
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if [[ ! -f /usr/src/"$KVER".tar.gz ]]; then
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/usr/bin/curl --verbose --tlsv1.3 --proto =https -L -O --url "https://github.com/anthraxx/linux-hardened/archive/refs/tags/$KVER.tar.gz"
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fi
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if [[ ! -d /usr/src/linux-hardened-"$KVER" ]]; then
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tar -xf "$KVER".tar.gz -C /usr/src/
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fi
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cd /usr/src/linux-hardened-"$KVER"
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# Pull down plague kconfig
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wget https://0xacab.org/optout/plague-kernel/-/raw/main/host_hardened.config -O .config
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# wget https://0xacab.org/optout/plague-kernel/-/raw/main/virt_hardened.config -O .config
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## virt_hardened.config is still a WIP
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# Prompt if baseline Plague kernel is desired
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## If not, proceed to fingerprint device
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read -p "Do you want create a custom kernel tailored to your hardware? (y/n)" response
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response=$(echo $response | tr '[:upper:]' '[:lower:]')
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if [[ $response == "y" ]]; then
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echo "Tailoring kernel configuration to your hardware"
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make localmodconfig
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else
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echo "Using baseline Plague kernel configuration"
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fi
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read -p "Do you want to open the kernel configuration editor? (y/n)" response
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response=$(echo $response | tr '[:upper:]' '[:lower:]')
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if [[ $response == "y" ]]; then
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make menuconfig
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else
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echo "Proceeding to compile"
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fi
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# compile
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make -j $(nproc --all)
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make modules_install INSTALL_MOD_STRIP=1 install
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# Determine commands needed via osInfo
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for f in ${!osInfo[@]}
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do
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if [[ -f $f ]]; then
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package_manager=${osInfo[$f]}
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if [[ $package_manager == "xbps" ]]; then
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cp ./arch/x86_64/boot/bzImage /boot/vmlinuz-"$KVER"
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dracut --kver "$KVER" --force
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grub-mkconfig -o /boot/grub/grub.cfg
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xbps-reconfigure -fa
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/usr/bin/update-grub
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elif [[ $package_manager == "dnf" ]]; then
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command -v installkernel
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elif [[ $package_manager == "apt-get" ]]; then
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cp ./arch/x86_64/boot/bzImage /boot/vmlinuz-"$KVER"
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dracut --kver "$KVER" --force
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update-grub2
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fi
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fi
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done
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# Remove sysmap/signing keys
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rm /lib/modules/"$KVER"_1/source/certs/signing_key*
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rm /lib/modules/"$KVER"_1/source/System.map
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rm /lib/modules/"$KVER"_1/source
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rm /lib/modules/"$KVER"_1/build
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echo "Congrats! Your custom kernel based on the PlagueOS kernel configuration has been installed."
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echo "Reboot now? (y/N): "
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read reboot_opt
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if [[ "$reboot_opt" == "Y" ]]; then
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reboot
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else
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exit
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fi |