Add tools scripts to overlay
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#!/bin/sh
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set -e
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cd /usr/src/linux
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# make clean
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# make oldconfig
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make menuconfig
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make all ${MAKEOPTS}
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make modules_install
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NEW=$(make kernelversion)
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TARGET=/boot
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# If EFI store kernel under EFI
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[ -d /sys/firmware/efi ] && [ -d /boot/EFI/Gentoo ] && TARGET=/boot/EFI/Gentoo
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dracut --xz -H --force --strip ${TARGET}/initrd-${NEW} ${NEW}
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export INSTALL_PATH=${TARGET}
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make install
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if [ ! -d /sys/firmware/efi ]; then
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grub2-mkconfig -o ${TARGET}/grub/grub.cfg
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pushd ${TARGET} >/dev/null
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ln -sf System.map-${NEW} System.map
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popd > /dev/null
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fi
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echo "Building tools from within kernel sources..."
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echo " cpupower (requires pciutils):"
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cd tools/power/cpupower && make ${MAKEOPTS}
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cp -a cpupower /usr/local/bin
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cp -a libcpupower.so* /usr/lib
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echo "After successful boot of new kernel run:"
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echo " root # emerge @module-rebuild"
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# eselect opengl set ati
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cp /usr/src/linux/.config /etc/kernel/kernel-config-${NEW}
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#!/bin/sh
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set -e
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# parallel jobs to speed up configure runs etc.
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# but only half as many if CPU cores > 4
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CPUS=$(nproc)
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[ $CPUS -ge 4 ] && JOBS="--jobs $((CPUS/2))"
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emerge --ask --update --deep --newuse --keep-going --accept-properties=-interactive --with-bdeps=y ${JOBS} world
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echo "Going to remove unneeded packages ..."
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emerge --depclean
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if [ -x $(which localepurge) ]; then
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echo "Removing unneeded locales..."
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localepurge
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fi
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echo "Fixing dependencies..."
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revdep-rebuild -i
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echo "Updating eix cache..."
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eix-update -q
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echo "Cleaning up archives.."
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eclean -q -d packages
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eclean -q -d distfiles
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#!/bin/sh
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# set -x
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PORTAGE="/usr/portage"
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# By default store SquashFS backing file under /mnt/portage
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SQFS_PORTAGE="/mnt/portage/portage.sqfs"
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# Store temporary overlayFS within portage tmpdir
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OVERLAY="$(portageq envvar PORTAGE_TMPDIR)/portage.overlayfs"
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OVERLAY_NAME=portage_overlay
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usage () {
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cat << EOF
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Usage: $0 [-p portage_tree] [-s squashfs_file]
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EOF
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exit 0
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}
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# mount squashed portage incl. writeable overlay
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mount_overlay () {
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# Make sure backing tree is mounted, try to mount otherwise
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mountpoint -q ${PORTAGE} || mount ${PORTAGE} && echo "Mounted ${PORTAGE}."
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# mount the overlay on top of existing live portage tree
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mkdir -p ${OVERLAY} ${OVERLAY}.work
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mount | grep -q ${OVERLAY_NAME} || mount -t overlay ${OVERLAY_NAME} \
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-olowerdir=${PORTAGE},upperdir=${OVERLAY},workdir=${OVERLAY}.work \
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${PORTAGE} && echo "Mounted Overlay file system."
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}
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# umount overlay and clean up temp dirs
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umount_overlay () {
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umount ${OVERLAY_NAME} && rm -rf ${OVERLAY} ${OVERLAY}.work
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echo "Overlay file system unmounted."
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}
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# umount current, replace and mount new
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replace_squashfs () {
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mountpoint -q ${PORTAGE}
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if [ $? -eq 0 ]; then
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umount ${PORTAGE} && echo "Unmounted ${PORTAGE}."
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if [ $? -ne 0 ]; then
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echo "Could not unmount ${PORTAGE} !"
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echo "New portage snapshot is at ${SQFS_PORTAGE}.new"
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exit 1
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fi
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fi
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if [ -f ${SQFS_PORTAGE} ]; then
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mv ${SQFS_PORTAGE} ${SQFS_PORTAGE}.previous
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else
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echo "No current squashFS backing file ${SQFS_PORTAGE} found,\
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assuming initial setup."
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fi
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mv ${SQFS_PORTAGE}.new ${SQFS_PORTAGE} && \
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mount ${PORTAGE} && echo "Updated tree mounted at ${PORTAGE}."
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}
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# Create new squashfs image
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create_squashfs () {
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mksquashfs ${PORTAGE} ${SQFS_PORTAGE}.new -comp xz -noappend \
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-no-progress && echo "SquashFS snapshot created at ${SQFS_PORTAGE}.new"
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}
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# Any custom changes to the portage tree
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customize () {
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echo "Applying local customizations ..."
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# Delete any package mask
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[ -f ${PORTAGE}/profiles/hardened/linux/amd64/package.mask ] && \
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rm -f ${PORTAGE}/profiles/hardened/linux/amd64/package.mask
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# Reenable nvidia
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perl -i -p -e 's/^(app-admin\/conky nvidia|x11-drivers\/nvidia|nvidia|video_cards_nvidia|vdpau|cuda|opencl)/# $1/;' \
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${PORTAGE}/profiles/hardened/linux/use.mask \
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${PORTAGE}/profiles/hardened/linux/amd64/use.mask \
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${PORTAGE}/profiles/hardened/linux/amd64/package.use.mask
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}
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while getopts "p:s:" OPTIONS; do
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case $OPTIONS in
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p) PORTAGE=$OPTARG;;
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s) SQFS_PORTAGE=$OPTARG;;
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?) usage;;
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esac
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done
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[ -d ${PORTAGE} ] || { echo "${PORTAGE} is not a directory!"; usage; }
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mount_overlay
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emaint sync -r gentoo
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# Optional
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customize
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create_squashfs
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umount_overlay
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replace_squashfs
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