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#!/bin/bash
#
# Copyright (c) 2015 Igor Pecovnik, igor.pecovnik@gma**.com
#
# This file is licensed under the terms of the GNU General Public
# License version 2. This program is licensed "as is" without any
# warranty of any kind, whether express or implied.
#
# This file is a part of tool chain https://github.com/igorpecovnik/lib
#
# Functions:
# compile_uboot
# compile_kernel
# compile_sunxi_tools
# check_toolchain
# find_toolchain
# advanced_patch
# process_patch_file
# install_external_applications
# write_uboot
# customize_image
# userpatch_create
# overlayfs_wrapper
compile_uboot()
{
# not optimal, but extra cleaning before overlayfs_wrapper should keep sources directory clean
if [[ $CLEAN_LEVEL == *make* ]]; then
display_alert "Cleaning" "$BOOTSOURCEDIR" "info"
(cd $SOURCES/$BOOTSOURCEDIR; make clean > /dev/null 2>&1)
fi
if [[ $USE_OVERLAYFS == yes ]]; then
local ubootdir=$(overlayfs_wrapper "wrap" "$SOURCES/$BOOTSOURCEDIR" "u-boot_${LINUXFAMILY}_${BRANCH}")
else
local ubootdir="$SOURCES/$BOOTSOURCEDIR"
fi
cd "$ubootdir"
# read uboot version
local version=$(grab_version "$ubootdir")
display_alert "Compiling u-boot" "$version" "info"
local toolchain=""
if [[ -n $UBOOT_ALT_GCC ]] && ! check_toolchain "$UBOOT_COMPILER" "$UBOOT_ALT_GCC"; then
# try to find alternative toolchain
toolchain=$(find_toolchain "$UBOOT_COMPILER" "$UBOOT_ALT_GCC")
fi
if [[ -z $toolchain && -n $UBOOT_NEEDS_GCC ]] && ! check_toolchain "$UBOOT_COMPILER" "$UBOOT_NEEDS_GCC"; then
# try to find required toolchain if alt was not found
toolchain=$(find_toolchain "$UBOOT_COMPILER" "$UBOOT_NEEDS_GCC")
[[ -z $toolchain ]] && exit_with_error "Could not find required toolchain" "${compiler}gcc $expression"
fi
display_alert "Compiler version" "${UBOOT_COMPILER}gcc $(eval ${toolchain:+env PATH=$toolchain:$PATH} ${UBOOT_COMPILER}gcc -dumpversion)" "info"
# create directory structure for the .deb package
local uboot_name=${CHOSEN_UBOOT}_${REVISION}_${ARCH}
rm -rf $uboot_name
mkdir -p $uboot_name/usr/lib/{u-boot,$uboot_name} $uboot_name/DEBIAN
# process compilation for one or multiple targets
while read -r target; do
local target_make=$(cut -d';' -f1 <<< $target)
local target_patchdir=$(cut -d';' -f2 <<< $target)
local target_files=$(cut -d';' -f3 <<< $target)
display_alert "Checking out sources"
git checkout -f -q HEAD
if [[ $CLEAN_LEVEL == *make* ]]; then
display_alert "Cleaning" "$BOOTSOURCEDIR" "info"
(cd $SOURCES/$BOOTSOURCEDIR; make clean > /dev/null 2>&1)
fi
[[ $FORCE_CHECKOUT == yes ]] && advanced_patch "u-boot" "$BOOTPATCHDIR" "$BOARD" "$target_patchdir" "${LINUXFAMILY}-${BOARD}-${BRANCH}"
# create patch for manual source changes
[[ $CREATE_PATCHES == yes ]] && userpatch_create "u-boot"
eval CCACHE_BASEDIR="$(pwd)" ${toolchain:+env PATH=$toolchain:$PATH} \
'make $CTHREADS $BOOTCONFIG CROSS_COMPILE="$CCACHE $UBOOT_COMPILER"' 2>&1 \
${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
[[ -f .config ]] && sed -i 's/CONFIG_LOCALVERSION=""/CONFIG_LOCALVERSION="-armbian"/g' .config
[[ -f .config ]] && sed -i 's/CONFIG_LOCALVERSION_AUTO=.*/# CONFIG_LOCALVERSION_AUTO is not set/g' .config
[[ -f tools/logos/udoo.bmp ]] && cp $SRC/lib/bin/armbian-u-boot.bmp tools/logos/udoo.bmp
touch .scmversion
# patch mainline uboot configuration to boot with old sunxi kernels
if [[ $BRANCH == default && $LINUXFAMILY == sun*i ]] && ! grep -q "CONFIG_ARMV7_BOOT_SEC_DEFAULT=y" .config ; then
echo -e "CONFIG_ARMV7_BOOT_SEC_DEFAULT=y\nCONFIG_OLD_SUNXI_KERNEL_COMPAT=y" >> .config
fi
# $BOOTDELAY can be set in board family config, ensure autoboot can be stopped even if set to 0
[[ $BOOTDELAY == 0 ]] && echo -e "CONFIG_ZERO_BOOTDELAY_CHECK=y" >> .config
[[ -n $BOOTDELAY ]] && sed -i "s/^CONFIG_BOOTDELAY=.*/CONFIG_BOOTDELAY=${BOOTDELAY}/" .config || [[ -f .config ]] && echo "CONFIG_BOOTDELAY=${BOOTDELAY}" >> .config
eval CCACHE_BASEDIR="$(pwd)" ${toolchain:+env PATH=$toolchain:$PATH} \
'make $target_make $CTHREADS CROSS_COMPILE="$CCACHE $UBOOT_COMPILER"' 2>&1 \
${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling u-boot..." $TTY_Y $TTY_X'} \
${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
[[ ${PIPESTATUS[0]} -ne 0 ]] && exit_with_error "U-boot compilation failed"
# copy files to build directory
for f in $target_files; do
local f_src=$(cut -d':' -f1 <<< $f)
if [[ $f == *:* ]]; then
local f_dst=$(cut -d':' -f2 <<< $f)
else
local f_dst=$(basename $f_src)
fi
[[ ! -f $f_src ]] && exit_with_error "U-boot file not found" "$(basename $f_src)"
cp $f_src $uboot_name/usr/lib/$uboot_name/$f_dst
done
done <<< "$UBOOT_TARGET_MAP"
# set up postinstall script
cat <<-EOF > $uboot_name/DEBIAN/postinst
#!/bin/bash
source /usr/lib/u-boot/platform_install.sh
[[ \$DEVICE == /dev/null ]] && exit 0
[[ -z \$DEVICE ]] && DEVICE="/dev/mmcblk0"
[[ \$(type -t setup_write_uboot_platform) == function ]] && setup_write_uboot_platform
echo "Updating u-boot on device \$DEVICE" >&2
write_uboot_platform \$DIR \$DEVICE
sync
exit 0
EOF
chmod 755 $uboot_name/DEBIAN/postinst
# declare -f on non-defined function does not do anything
cat <<-EOF > $uboot_name/usr/lib/u-boot/platform_install.sh
DIR=/usr/lib/$uboot_name
$(declare -f write_uboot_platform)
$(declare -f setup_write_uboot_platform)
EOF
# set up control file
cat <<-END > $uboot_name/DEBIAN/control
Package: linux-u-boot-${BOARD}-${BRANCH}
Version: $REVISION
Architecture: $ARCH
Maintainer: $MAINTAINER <$MAINTAINERMAIL>
Installed-Size: 1
Section: kernel
Priority: optional
Provides: armbian-u-boot
Replaces: armbian-u-boot
Conflicts: armbian-u-boot, u-boot-sunxi
Description: Uboot loader $version
END
# copy config file to the package
# useful for FEL boot with overlayfs_wrapper
[[ -f .config && -n $BOOTCONFIG ]] && cp .config $uboot_name/usr/lib/u-boot/$BOOTCONFIG
display_alert "Building deb" "${uboot_name}.deb" "info"
eval 'dpkg -b $uboot_name 2>&1' ${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'}
rm -rf $uboot_name
[[ ! -f ${uboot_name}.deb || $(stat -c '%s' "${uboot_name}.deb") -lt 5000 ]] && exit_with_error "Building u-boot package failed"
mv ${uboot_name}.deb $DEST/debs/
}
compile_kernel()
{
if [[ $CLEAN_LEVEL == *make* ]]; then
display_alert "Cleaning" "$LINUXSOURCEDIR" "info"
(cd $SOURCES/$LINUXSOURCEDIR; make ARCH=$ARCHITECTURE clean >/dev/null 2>&1)
fi
if [[ $USE_OVERLAYFS == yes ]]; then
local kerneldir=$(overlayfs_wrapper "wrap" "$SOURCES/$LINUXSOURCEDIR" "kernel_${LINUXFAMILY}_${BRANCH}")
else
local kerneldir="$SOURCES/$LINUXSOURCEDIR"
fi
cd "$kerneldir"
# this is a patch that Ubuntu Trusty compiler works
# TODO: Check if still required
if [[ $(patch --dry-run -t -p1 < $SRC/lib/patch/kernel/compiler.patch | grep Reversed) != "" ]]; then
display_alert "Patching kernel for compiler support"
[[ $FORCE_CHECKOUT == yes ]] && patch --batch --silent -t -p1 < $SRC/lib/patch/kernel/compiler.patch >> $DEST/debug/output.log 2>&1
fi
[[ $FORCE_CHECKOUT == yes ]] && advanced_patch "kernel" "$LINUXFAMILY-$BRANCH" "$BOARD" "" "$LINUXFAMILY-$BRANCH"
# create patch for manual source changes in debug mode
[[ $CREATE_PATCHES == yes ]] && userpatch_create "kernel"
# read kernel version
local version=$(grab_version "$kerneldir")
display_alert "Compiling $BRANCH kernel" "$version" "info"
local toolchain=""
if [[ -n $KERNEL_ALT_GCC ]] && ! check_toolchain "$KERNEL_COMPILER" "$KERNEL_ALT_GCC"; then
# try to find alternative toolchain
toolchain=$(find_toolchain "$KERNEL_COMPILER" "$KERNEL_ALT_GCC")
fi
if [[ -z $toolchain && -n $KERNEL_NEEDS_GCC ]] && ! check_toolchain "$KERNEL_COMPILER" "$KERNEL_NEEDS_GCC"; then
# try to find required toolchain if alt was not found
toolchain=$(find_toolchain "$KERNEL_COMPILER" "$KERNEL_NEEDS_GCC")
[[ -z $toolchain ]] && exit_with_error "Could not find required toolchain" "${KERNEL_COMPILER}gcc $expression"
fi
display_alert "Compiler version" "${KERNEL_COMPILER}gcc $(eval ${toolchain:+env PATH=$toolchain:$PATH} ${KERNEL_COMPILER}gcc -dumpversion)" "info"
# use proven config
if [[ $KERNEL_KEEP_CONFIG != yes || ! -f .config ]]; then
if [[ -f $SRC/userpatches/$LINUXCONFIG.config ]]; then
display_alert "Using kernel config provided by user" "userpatches/$LINUXCONFIG.config" "info"
cp $SRC/userpatches/$LINUXCONFIG.config .config
else
display_alert "Using kernel config file" "lib/config/kernel/$LINUXCONFIG.config" "info"
cp $SRC/lib/config/kernel/$LINUXCONFIG.config .config
fi
fi
# hack for deb builder. To pack what's missing in headers pack.
cp $SRC/lib/patch/misc/headers-debian-byteshift.patch /tmp
export LOCALVERSION="-$LINUXFAMILY"
sed -i 's/EXTRAVERSION = .*/EXTRAVERSION =/' Makefile
if [[ $KERNEL_CONFIGURE != yes ]]; then
if [[ $BRANCH == default ]]; then
make $CTHREADS ARCH=$ARCHITECTURE CROSS_COMPILE="$CCACHE $KERNEL_COMPILER" silentoldconfig
else
make $CTHREADS ARCH=$ARCHITECTURE CROSS_COMPILE="$CCACHE $KERNEL_COMPILER" olddefconfig
fi
else
make $CTHREADS ARCH=$ARCHITECTURE CROSS_COMPILE="$CCACHE $KERNEL_COMPILER" oldconfig
make $CTHREADS ARCH=$ARCHITECTURE CROSS_COMPILE="$CCACHE $KERNEL_COMPILER" menuconfig
# store kernel config in easily reachable place
cp .config $DEST/kernel.config
fi
eval CCACHE_BASEDIR="$(pwd)" ${toolchain:+env PATH=$toolchain:$PATH} \
'make $CTHREADS ARCH=$ARCHITECTURE CROSS_COMPILE="$CCACHE $KERNEL_COMPILER" $KERNEL_IMAGE_TYPE modules dtbs 2>&1' \
${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling kernel..." $TTY_Y $TTY_X'} \
${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
if [[ ${PIPESTATUS[0]} -ne 0 || ! -f arch/$ARCHITECTURE/boot/$KERNEL_IMAGE_TYPE ]]; then
exit_with_error "Kernel was not built" "@host"
fi
# different packaging for 4.3+
KERNEL_PACKING="deb-pkg"
IFS='.' read -a array <<< "$version"
if (( "${array[0]}" == "4" )) && (( "${array[1]}" >= "3" )); then
KERNEL_PACKING="bindeb-pkg"
fi
# produce deb packages: image, headers, firmware, dtb
eval CCACHE_BASEDIR="$(pwd)" ${toolchain:+env PATH=$toolchain:$PATH} \
'make -j1 $KERNEL_PACKING KDEB_PKGVERSION=$REVISION LOCALVERSION="-"$LINUXFAMILY \
KBUILD_DEBARCH=$ARCH ARCH=$ARCHITECTURE DEBFULLNAME="$MAINTAINER" DEBEMAIL="$MAINTAINERMAIL" CROSS_COMPILE="$CCACHE $KERNEL_COMPILER" 2>&1' \
${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Creating kernel packages..." $TTY_Y $TTY_X'} \
${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
cd ..
mv *.deb $DEST/debs/ || exit_with_error "Failed moving kernel DEBs"
}
compile_sunxi_tools()
{
fetch_from_repo "https://github.com/linux-sunxi/sunxi-tools.git" "sunxi-tools" "branch:master"
# Compile and install only if git commit hash changed
cd $SOURCES/sunxi-tools
if [[ ! -f .commit_id || $(git rev-parse @ 2>/dev/null) != $(<.commit_id) ]]; then
display_alert "Compiling" "sunxi-tools" "info"
make -s clean >/dev/null
make -s tools >/dev/null
mkdir -p /usr/local/bin/
make install-tools >/dev/null 2>&1
git rev-parse @ 2>/dev/null > .commit_id
fi
}
# check_toolchain <UBOOT|KERNEL> <expression>
#
# checks if system default toolchain version satisfies <expression>
# <expression>: "< x.y"; "> x.y"; "== x.y"
check_toolchain()
{
local compiler=$1
local expression=$2
# get major.minor gcc version
local gcc_ver=$(${compiler}gcc -dumpversion | grep -oE "^[[:digit:]].[[:digit:]]")
awk "BEGIN{exit ! ($gcc_ver $expression)}" && return 0
return 1
}
# find_toolchain <compiler_prefix> <expression>
#
# returns path to toolchain that satisfies <expression>
#
find_toolchain()
{
local compiler=$1
local expression=$2
local dist=10
local toolchain=""
# extract target major.minor version from expression
local target_ver=$(grep -oE "[[:digit:]].[[:digit:]]" <<< "$expression")
for dir in $SRC/toolchains/*/; do
# check if is a toolchain for current $ARCH
[[ ! -f ${dir}bin/${compiler}gcc ]] && continue
# get toolchain major.minor version
local gcc_ver=$(${dir}bin/${compiler}gcc -dumpversion | grep -oE "^[[:digit:]].[[:digit:]]")
# check if toolchain version satisfies requirement
awk "BEGIN{exit ! ($gcc_ver $expression)}" >/dev/null || continue
# check if found version is the closest to target
local d=$(awk '{x = $1 - $2}{printf "%.1f\n", (x > 0) ? x : -x}' <<< "$target_ver $gcc_ver")
if awk "BEGIN{exit ! ($d < $dist)}" >/dev/null ; then
dist=$d
toolchain=${dir}bin
fi
done
echo "$toolchain"
}
# advanced_patch <dest> <family> <board> <target> <description>
#
# parameters:
# <dest>: u-boot, kernel
# <family>: u-boot: u-boot, u-boot-neo; kernel: sun4i-default, sunxi-next, ...
# <board>: cubieboard, cubieboard2, cubietruck, ...
# <target>: optional subdirectory
# <description>: additional description text
#
# priority:
# $SRC/userpatches/<dest>/<family>/target_<target>
# $SRC/userpatches/<dest>/<family>/board_<board>
# $SRC/userpatches/<dest>/<family>
# $SRC/lib/patch/<dest>/<family>/target_<target>
# $SRC/lib/patch/<dest>/<family>/board_<board>
# $SRC/lib/patch/<dest>/<family>
#
advanced_patch()
{
local dest=$1
local family=$2
local board=$3
local target=$4
local description=$5
display_alert "Started patching process for" "$dest $description" "info"
display_alert "Looking for user patches in" "userpatches/$dest/$family" "info"
local names=()
local dirs=(
"$SRC/userpatches/$dest/$family/target_${target}:[\e[33mu\e[0m][\e[34mt\e[0m]"
"$SRC/userpatches/$dest/$family/board_${board}:[\e[33mu\e[0m][\e[35mb\e[0m]"
"$SRC/userpatches/$dest/$family:[\e[33mu\e[0m][\e[32mc\e[0m]"
"$SRC/lib/patch/$dest/$family/target_${target}:[\e[32ml\e[0m][\e[34mt\e[0m]"
"$SRC/lib/patch/$dest/$family/board_${board}:[\e[32ml\e[0m][\e[35mb\e[0m]"
"$SRC/lib/patch/$dest/$family:[\e[32ml\e[0m][\e[32mc\e[0m]"
)
# required for "for" command
shopt -s nullglob dotglob
# get patch file names
for dir in "${dirs[@]}"; do
for patch in ${dir%%:*}/*.patch; do
names+=($(basename $patch))
done
done
# remove duplicates
local names_s=($(echo "${names[@]}" | tr ' ' '\n' | LC_ALL=C sort -u | tr '\n' ' '))
# apply patches
for name in "${names_s[@]}"; do
for dir in "${dirs[@]}"; do
if [[ -f ${dir%%:*}/$name ]]; then
if [[ -s ${dir%%:*}/$name ]]; then
process_patch_file "${dir%%:*}/$name" "${dir##*:}"
else
display_alert "... ${dir##*:} $name" "skipped"
fi
break # next name
fi
done
done
}
# process_patch_file <file> <description>
#
# parameters:
# <file>: path to patch file
# <status>: additional status text
#
process_patch_file()
{
local patch=$1
local status=$2
# detect and remove files which patch will create
lsdiff -s --strip=1 $patch | grep '^+' | awk '{print $2}' | xargs -I % sh -c 'rm -f %'
echo "Processing file $patch" >> $DEST/debug/patching.log
patch --batch --silent -p1 -N < $patch >> $DEST/debug/patching.log 2>&1
if [[ $? -ne 0 ]]; then
display_alert "... $status $(basename $patch)" "failed" "wrn"
[[ $EXIT_PATCHING_ERROR == yes ]] && exit_with_error "Aborting due to" "EXIT_PATCHING_ERROR"
else
display_alert "... $status $(basename $patch)" "succeeded" "info"
fi
echo >> $DEST/debug/patching.log
}
install_external_applications()
{
#--------------------------------------------------------------------------------------------------------------------------------
# Install external applications example
#--------------------------------------------------------------------------------------------------------------------------------
display_alert "Installing extra applications and drivers" "" "info"
for plugin in $SRC/lib/extras/*.sh; do
source $plugin
done
}
# write_uboot <loopdev>
#
# writes u-boot to loop device
# Parameters:
# loopdev: loop device with mounted rootfs image
write_uboot()
{
local loop=$1
display_alert "Writing U-boot bootloader" "$loop" "info"
mkdir -p /tmp/u-boot/
dpkg -x ${DEST}/debs/${CHOSEN_UBOOT}_${REVISION}_${ARCH}.deb /tmp/u-boot/
write_uboot_platform "/tmp/u-boot/usr/lib/${CHOSEN_UBOOT}_${REVISION}_${ARCH}" "$loop"
[[ $? -ne 0 ]] && exit_with_error "U-boot bootloader failed to install" "@host"
rm -r /tmp/u-boot/
sync
}
customize_image()
{
# for users that need to prepare files at host
[[ -f $SRC/userpatches/customize-image-host.sh ]] && source $SRC/userpatches/customize-image-host.sh
cp $SRC/userpatches/customize-image.sh $CACHEDIR/$SDCARD/tmp/customize-image.sh
chmod +x $CACHEDIR/$SDCARD/tmp/customize-image.sh
mkdir -p $CACHEDIR/$SDCARD/tmp/overlay
if [[ $(lsb_release -sc) == xenial ]]; then
# util-linux >= 2.27 required
mount -o bind,ro $SRC/userpatches/overlay $CACHEDIR/$SDCARD/tmp/overlay
else
mount -o bind $SRC/userpatches/overlay $CACHEDIR/$SDCARD/tmp/overlay
fi
display_alert "Calling image customization script" "customize-image.sh" "info"
chroot $CACHEDIR/$SDCARD /bin/bash -c "/tmp/customize-image.sh $RELEASE $FAMILY $BOARD $BUILD_DESKTOP"
umount $CACHEDIR/$SDCARD/tmp/overlay
mountpoint -q $CACHEDIR/$SDCARD/tmp/overlay || rm -r $CACHEDIR/$SDCARD/tmp/overlay
}
userpatch_create()
{
# create commit to start from clean source
git add .
git -c user.name='Armbian User' -c user.email='user@example.org' commit -q -m "Cleaning working copy"
local patch="$SRC/userpatches/patch/$1-$LINUXFAMILY-$BRANCH.patch"
# apply previous user debug mode created patches
[[ -f $patch ]] && display_alert "Applying existing $1 patch" "$patch" "wrn" && patch --batch --silent -p1 -N < $patch
# prompt to alter source
display_alert "Make your changes in this directory:" "$(pwd)" "wrn"
display_alert "Press <Enter> after you are done" "waiting" "wrn"
read </dev/tty
tput cuu1
git add .
# create patch out of changes
if ! git diff-index --quiet --cached HEAD; then
git diff --staged > $patch
display_alert "You will find your patch here:" "$patch" "info"
else
display_alert "No changes found, skipping patch creation" "" "wrn"
fi
git reset --soft HEAD~
for i in {3..1..1}; do echo -n "$i." && sleep 1; done
}
# overlayfs_wrapper <operation> <workdir> <description>
#
# <operation>: wrap|cleanup
# <workdir>: path to source directory
# <description>: suffix for merged directory to help locating it in /tmp
# return value: new directory
#
# Assumptions/notes:
# - Ubuntu Xenial host
# - /tmp is mounted as tmpfs
# - there is enough space on /tmp
# - UB if running multiple compilation tasks in parallel
# - should not be used with CREATE_PATCHES=yes
#
overlayfs_wrapper()
{
local operation="$1"
if [[ $operation == wrap ]]; then
local srcdir="$2"
local description="$3"
mkdir -p /tmp/overlay_components/ /tmp/armbian_build/
local tempdir=$(mktemp -d --tmpdir="/tmp/overlay_components/")
local workdir=$(mktemp -d --tmpdir="/tmp/overlay_components/")
local mergeddir=$(mktemp -d --suffix="_$description" --tmpdir="/tmp/armbian_build/")
mount -t overlay overlay -o lowerdir="$srcdir",upperdir="$tempdir",workdir="$workdir" "$mergeddir"
# this is executed in a subshell, so use temp files to pass extra data outside
echo "$tempdir" >> /tmp/.overlayfs_wrapper_cleanup
echo "$mergeddir" >> /tmp/.overlayfs_wrapper_umount
echo "$mergeddir" >> /tmp/.overlayfs_wrapper_cleanup
echo "$mergeddir"
return
fi
if [[ $operation == cleanup ]]; then
if [[ -f /tmp/.overlayfs_wrapper_umount ]]; then
for dir in $(</tmp/.overlayfs_wrapper_umount); do
[[ $dir == /tmp/* ]] && umount -l "$dir" > /dev/null 2>&1
done
fi
if [[ -f /tmp/.overlayfs_wrapper_cleanup ]]; then
for dir in $(</tmp/.overlayfs_wrapper_cleanup); do
[[ $dir == /tmp/* ]] && rm -rf "$dir"
done
fi
rm -f /tmp/.overlayfs_wrapper_umount /tmp/.overlayfs_wrapper_cleanup
fi
}