blend/init-blend

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#!/usr/bin/env bash
# Copyright (C) 2023 Rudra Saraswat
#
# This file is part of blend.
#
# blend is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# blend is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with blend. If not, see <http://www.gnu.org/licenses/>.
if [ ! -f '/run/.containerenv' ]; then
echo 'not running in container'
exit 1
fi
shopt -s extglob
while true; do
case $1 in
--uid)
if [ -n "$2" ]; then
_cuid="$2"
shift
shift
fi
;;
--group)
if [ -n "$2" ]; then
_cgid="$2"
shift
shift
fi
;;
--username)
if [ -n "$2" ]; then
_uname="$2"
shift
shift
fi
;;
--home)
if [ -n "$2" ]; then
_uhome="$2"
shift
shift
fi
;;
-*)
exit 1
;;
*)
break
;;
esac
done
cat << 'EOF'
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===================
Credits
===================
* NVIDIA driver support - Luca Di Maio (from Distrobox)
EOF
echo
echo 'Starting blend... (this may take a few minutes)'
echo
bmount() {
! [[ -d "$1" ]] && ! [[ -f "$1" ]] && return 0 # check if source dir exists
! [[ -e "$2" ]] && findmnt "$2" &>/dev/null && umount "$2" # unmount target dir if a mount
[[ -d "$1" ]] && mkdir -p "$2" # create target dir if source is a dir
[[ -f "$1" ]] && mkdir -p "$(dirname "$2")"; touch "$2" # create target file if source is a file
mountflags="rslave"
! [[ -z "$3" ]] && mountflags="$3"
mount --rbind -o "$mountflags" "$1" "$2" &>/dev/null
}
if [[ ! -f '/.init_blend.lock' ]]; then
###
if command -v apt-get &>/dev/null; then
apt-get update &>/dev/null
DEBIAN_FRONTEND=noninteractive apt-get -y install bash bc curl less wget apt-utils apt-transport-https dialog \
diffutils findutils gnupg2 sudo time util-linux libnss-myhostname \
libvte-2.9[0-9]-common libvte-common lsof ncurses-base passwd inotify-tools \
pinentry-curses libegl1-mesa libgl1-mesa-glx libvulkan1 mesa-vulkan-drivers &>/dev/null
elif command -v pacman &>/dev/null; then
pacman --noconfirm -Syyu &>/dev/null
pacman --noconfirm -Sy bash bc curl wget diffutils findutils gnupg sudo time util-linux vte-common lsof ncurses pinentry \
mesa opengl-driver vulkan-intel vulkan-radeon base-devel git inotify-tools &>/dev/null
elif command -v dnf &>/dev/null; then
dnf install -y --allowerasing bash bc curl wget diffutils findutils dnf-plugins-core gnupg2 less lsof passwd pinentry \
procps-ng vte-profile ncurses util-linux sudo time shadow-utils vulkan mesa-vulkan-drivers \
mesa-dri-drivers inotify-tools &>/dev/null
fi
mkdir -p /usr/local/bin
wget -O /usr/local/bin/host-spawn "https://github.com/1player/host-spawn/releases/latest/download/host-spawn-$(uname -m)" &>/dev/null
chmod 755 /usr/local/bin/host-spawn
fi
###
for i in /var/log/journal /var/lib/systemd/coredump /var/lib/flatpak; do
bmount "/run/host/${i}" "$i" ro
done
for i in /etc/host.conf /run/media /media /mnt /var/mnt \
/run/libvirt /etc/machine-id /run/netconfig/ /run/udev \
/run/systemd/journal /run/systemd/seats /run/systemd/sessions \
/run/systemd/users /run/systemd/resolve/ /srv /var/lib/libvirt; do
bmount "/run/host/${i}" "$i" rw
done
init_ro_mounts="
/run/systemd/journal
/var/log/journal
/run/systemd/resolve
/run/systemd/seats
/run/systemd/sessions
/run/systemd/users
/var/lib/systemd/coredump
/etc/localtime"
### Section START https://github.com/89luca89/distrobox/blob/main/distrobox-init#L772
host_sockets="$(find /run/host/run -name 'user' \
-prune -o -path /run/host/run/media \
-prune -o -name 'nscd' \
-prune -o -name 'bees' \
-prune -o -name 'system_bus_socket' \
-prune -o -type s -print \
2> /dev/null || :)"
### Section END
for i in ${host_sockets}; do
container_socket="$(echo -n "$i" | sed 's/\/run\/host//g')"
if [ ! -S "${container_socket}" ] && [ ! -L "${container_socket}" ]; then
rm -f "${container_socket}"
mkdir -p "$(dirname "${container_socket}")"
ln -s "$i" "${container_socket}"
fi
done
bmount "/run/host/usr/share/themes" "/usr/local/share/themes" ro
bmount "/run/host/usr/share/icons" "/usr/local/share/icons" ro
bmount "/run/host/usr/share/fonts" "/usr/local/share/fonts" ro
bmount "/usr/bin/host-blend" "/usr/bin/blend" ro
# sudo touch /.init_blend.lock
if [[ ! -f '/.init_blend.lock' ]]; then
#######################################################################
# NVIDIA driver integration. This is straight from https://github.com/89luca89/distrobox/blob/main/distrobox-init#L816,
# entirely thanks to an effort by Luca Di Maio, save for a few tweaks for init-blend. Thanks, in case you're reading this!
NVIDIA_FILES="$(find /run/host/usr/ \
-path "/run/host/usr/share/doc*" -prune -o \
-path "/run/host/usr/src*" -prune -o \
-path "/run/host/usr/lib*/modules*" -prune -o \
-path "/run/host/usr/share/man*" -prune -o \
-path "/run/host/usr/lib*" -prune -o \
-type f -iname "*nvidia*" -print 2</dev/null || :)"
for nvidia_file in ${NVIDIA_FILES}; do
dest_file="$(printf "%s" "${nvidia_file}" | sed 's|/run/host||g')"
bmount "${nvidia_file}" "${dest_file}" ro
done
# Then we find all the ".so" libraries, there are searched separately
# because we need to extract the relative path to mount them in the
# correct path based on the guest's setup
NVIDIA_LIBS="$(find /run/host/usr/lib* \
-iname "*nvidia*.so*" \
-o -iname "libcuda*.so*" \
-o -iname "libnvcuvid*.so*" \
-o -iname "libnvoptix*.so*" ||
:)"
for nvidia_lib in ${NVIDIA_LIBS}; do
dest_file="$(printf "%s" "${nvidia_lib}" |
sed 's|/run/host/usr/lib/x86_64-linux-gnu/||g' |
sed 's|/run/host/usr/lib64/||g' |
sed 's|/run/host/usr/lib/||g')"
# In the guest we need to adjust the destination path, so if we're on
# debian based containers, we need to target /usr/lib/x86_64-linux-gnu/
if [ -e "/usr/lib/x86_64-linux-gnu/" ]; then
bmount "${nvidia_lib}" "/usr/lib/x86_64-linux-gnu/${dest_file}" ro
# /usr/lib64 is common in rpm based distros
elif [ -e "/usr/lib64" ]; then
bmount "${nvidia_lib}" "/usr/lib64/${dest_file}" ro
# fallback to /usr/lib if none of the previous
else
bmount "${nvidia_lib}" "/usr/lib/${dest_file}" ro
fi
done
# Refresh ldconfig cache, also detect if there are empty files remaining
# and clean them.
# This could happen when upgrading drivers and changing versions.
empty_libs="$(ldconfig 2>&1 | grep -Eo "File.*is empty" | cut -d' ' -f2)"
if [ -n "${empty_libs}" ]; then
# shellcheck disable=SC2086
rm -f ${empty_libs}
fi
#######################################################################
### Section START (based on https://github.com/89luca89/distrobox/blob/main/distrobox-init#L816)
if [ -d "/usr/lib/rpm/" ]; then
mkdir -p /usr/lib/rpm/macros.d
net_mounts=""
for net_mount in \
${HOST_MOUNTS_RO} ${HOST_MOUNTS} \
'/dev' '/proc' '/sys' '/tmp' \
'/etc/host.conf' '/etc/hosts' '/etc/resolv.conf' '/etc/localtime' \
'/usr/share/zoneinfo'; do
net_mounts="${net_mount}:${net_mounts}"
done
net_mounts=${net_mounts%?}
echo "%_netsharedpath ${net_mounts}" > /usr/lib/rpm/macros.d/macros.blend
elif [ -d "/etc/dpkg/" ]; then
mkdir -p /etc/dpkg/dpkg.cfg.d /etc/apt/apt.conf.d
echo -n > /etc/dpkg/dpkg.cfg.d/00_blend
for net_mount in ${HOST_MOUNTS_RO} ${HOST_MOUNTS} '/etc/hosts' '/etc/resolv.conf' '/etc/localtime'; do
printf "path-exclude %s/*\n" "${net_mount}" >> /etc/dpkg/dpkg.cfg.d/00_blend
done
echo -n > /etc/apt/apt.conf.d/00_blend
for init_mount in ${init_ro_mounts}; do
printf 'DPkg::Pre-Invoke {"if findmnt %s >/dev/null; then umount -l %s; fi";};\n' \
"${init_mount}" "${init_mount}" >> /etc/apt/apt.conf.d/00_blend
printf 'DPkg::Post-Invoke {"if [ -e /run/host/%s ] || [ -e /run/host/$(readlink -fm /run/host/%s) ]; then mount --rbind $(readlink -fm /run/host/%s) %s 2>/dev/null || mount --rbind /run/host/$(readlink -fm /run/host/%s) %s; fi";};\n' \
"${init_mount}" "${init_mount}" "${init_mount}" "${init_mount}" "${init_mount}" "${init_mount}" >> /etc/apt/apt.conf.d/00_blend
done
### Section END
elif [ -d "/usr/share/libalpm/scripts" ]; then
echo "#!/bin/sh" > /usr/share/libalpm/scripts/00_blend_pre_hook.sh
echo "#!/bin/sh" > /usr/share/libalpm/scripts/01_blend_post_hook.sh
echo "#!/bin/sh" > /usr/share/libalpm/scripts/02_blend_post_hook.sh
for net_mount in ${HOST_MOUNTS_RO}; do
echo "findmnt ${net_mount} &>/dev/null && umount ${net_mount} || :" >> /usr/share/libalpm/scripts/00_blend_pre_hook.sh
echo "test -e /run/host/${net_mount} && mount --rbind -o ro /run/host/${net_mount} ${net_mount} || :" >> /usr/share/libalpm/scripts/02_blend_post_hook.sh
done
echo -e '#!/bin/sh\necho -e "#!/bin/sh\nexit 0" > /usr/share/libalpm/scripts/systemd-hook' >/usr/share/libalpm/scripts/01_blend_post_hook.sh
chmod 755 /usr/share/libalpm/scripts/*blend*.sh
for p in 00_blend_pre_hook 01_blend_post_hook 02_blend_post_hook; do
when=PostTransaction
[[ -z "${p##*pre*}" ]] && when=PreTransaction
cat << EOF > "/usr/share/libalpm/hooks/${p}.hook"
[Trigger]
Operation = Install
Operation = Upgrade
Type = Package
Target = *
[Action]
Description = blend ${p}
When = ${when}
Exec = /usr/share/libalpm/scripts/${p}.sh
EOF
done
fi
mkdir -p /etc/sudoers.d
if ! grep -q 'Defaults !fqdn' /etc/sudoers.d/sudoers &>/dev/null; then
printf "Defaults !fqdn\n" >> /etc/sudoers.d/sudoers
fi
if ! grep -q "\"${_uname}\" ALL = (root) NOPASSWD:ALL" /etc/sudoers.d/sudoers &>/dev/null; then
printf "\"%s\" ALL = (root) NOPASSWD:ALL\n" "$_uname" >> /etc/sudoers.d/sudoers
fi
if ! grep -q "^${_uname}:" /etc/group; then
if ! groupadd --force --gid "$_cgid" "$_uname"; then
printf "%s:x:%s:" "$_uname" "$_cgid" >> /etc/group
fi
fi
useradd --uid "$_cuid" --gid "$_cgid" --shell "/bin/bash" --no-create-home --home "$_uhome" "$_uname" &>/dev/null
chown root /etc/sudo.conf
chown root /usr/bin/sudo
chmod 4755 /usr/bin/sudo
fi
if ! command -v inotify-tools &>/dev/null; then
if command -v apt-get &>/dev/null; then
apt-get update &>/dev/null
DEBIAN_FRONTEND=noninteractive apt-get -y install inotify-tools &>/dev/null
elif command -v pacman &>/dev/null; then
pacman --noconfirm -Syyu &>/dev/null
pacman --noconfirm -Sy inotify-tools &>/dev/null
elif command -v dnf &>/dev/null; then
dnf install -y --allowerasing inotify-tools &>/dev/null
fi
fi
source /run/.containerenv
CONTAINER_NAME="$name"
if [[ ! -f '/.init_blend.lock' ]] && command -v pacman &>/dev/null; then
cd /; git clone https://aur.archlinux.org/yay.git &>/dev/null; cd yay
chown -R "$_uname" . &>/log
sudo -u "$_uname" makepkg --noconfirm -si &>/dev/null
cd /; rm -rf yay
touch /.init_blend.lock
fi
for full_file in /usr/bin/*; do
if [[ -x "$full_file" ]]; then
file="$(basename "${full_file}")"
if [[ ! -f "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}" ]]; then
mkdir -p "${HOME}/.local/bin/blend_bin"
echo "#!/bin/bash" > "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
echo '[ -f /run/.containerenv ] && { if [[ -e "/usr/bin/'"${file}"'" ]]; then /usr/bin/'"${file}"' "$@"; exit $?; else echo "This command can be accessed from the host, or from the container '"'${CONTAINER_NAME}'"'."; exit 127; fi } || :' >> "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
echo 'BLEND_ALLOW_ROOT= BLEND_NO_CHECK= blend enter -cn '"${CONTAINER_NAME}"' -- '"${file}"' "$@"' >> "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
chmod 755 "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
fi
fi
done
mkdir -p /usr/share/applications
touch "/usr/share/applications/empty_file.desktop"
for full_file in /usr/share/applications/*.desktop; do
file="$(basename "${full_file}")"
mkdir -p "${HOME}/.local/share/applications"
echo -n > "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
while read -r line; do
if [[ $line == Name* ]]; then
echo "${line} (container ${CONTAINER_NAME})" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
elif [[ $line == Exec* ]]; then
echo "Exec=blend enter -cn ${CONTAINER_NAME} -- ${line:5}" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
elif [[ $line == Icon* ]]; then
if [[ -e "${line:5}" ]]; then
mkdir -p "${HOME}/.local/share/blend/icons/${CONTAINER_NAME}_${file}"; cp "${line:5}" "${HOME}/.local/share/blend/icons/${CONTAINER_NAME}_${file}"
echo "Icon=${HOME}/.local/share/blend/icons/${CONTAINER_NAME}_${file}/$(basename "${line:5}")" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
else
ICON_PATH="$(find /usr/share/icons/hicolor -type f -iname "${line:5}.*" -print -quit 2>/dev/null)"
mkdir -p "$(dirname "${ICON_PATH}" | sed 's/\/usr\/share/'"\/home\/${_uname}"'\/.local\/share/g')"
FINAL_ICON_PATH="$(dirname "${ICON_PATH}" | sed 's/\/usr\/share/'"\/home\/${_uname}"'\/.local\/share/g')/$(echo "${file%.*}").$(basename "${ICON_PATH}" | sed 's/^.*\.//')"
cp "${ICON_PATH}" "${FINAL_ICON_PATH}" &>/dev/null
echo "Icon=${FINAL_ICON_PATH}" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
fi
else
echo "$line" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
fi
done < "/usr/share/applications/${file}"
sed -i 's/DBusActivatable=true/DBusActivatable=false/g' "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
sed -i '/^TryExec/d' "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
chmod 755 "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
done
echo "Completed container setup."
mkdir -p /usr/share/applications /usr/bin
inotifywait -m /usr/share/applications /usr/bin -e create,delete,move 2>/dev/null |
while read dir action file; do
( if [[ "$dir" == "/usr/bin/" ]]; then
if [[ "$action" == *"CREATE"* ]]; then
if [[ ! -f "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}" ]] && [[ -x "/usr/bin/${file}" ]]; then
mkdir -p "${HOME}/.local/bin/blend_bin"
echo "#!/bin/bash" > "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
echo '[ -f /run/.containerenv ] && { if [[ -e "/usr/bin/'"${file}"'" ]]; then /usr/bin/'"${file}"' "$@"; exit $?; else echo "This command can be accessed from the host, or from the container '"'${CONTAINER_NAME}'"'."; exit 127; fi } || :' >> "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
echo 'BLEND_ALLOW_ROOT= BLEND_NO_CHECK= blend enter -cn '"${CONTAINER_NAME}"' -- '"${file}"' "$@"' >> "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
chmod 755 "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
fi
elif [[ "$action" == *"DELETE"* ]]; then
rm -f "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
elif [[ "$action" == *"MOVED_FROM"* ]]; then
rm -f "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
elif [[ "$action" == *"MOVED_TO"* ]]; then
if [[ ! -f "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}" ]] && [[ -x "/usr/bin/${file}" ]]; then
mkdir -p "${HOME}/.local/bin/blend_bin"
echo "#!/bin/bash" > "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
echo '[ -f /run/.containerenv ] && { if [[ -e "/usr/bin/'"${file}"'" ]]; then /usr/bin/'"${file}"' "$@"; exit $?; else echo "This command can be accessed from the host, or from the container '"'${CONTAINER_NAME}'"'."; exit 127; fi } || :' >> "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
echo 'BLEND_ALLOW_ROOT= BLEND_NO_CHECK= blend enter -cn '"${CONTAINER_NAME}"' -- '"${file}"' "$@"' >> "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
chmod 755 "${HOME}/.local/bin/blend_bin/${file}.${CONTAINER_NAME}"
fi
fi
fi ) &
( if [[ "$dir" == "/usr/share/applications/" ]]; then
if [[ "$action" == *"CREATE"* ]] || [[ "$action" == *"MOVED_TO"* ]]; then
if [[ "$file" == *'.desktop' ]]; then
mkdir -p "${HOME}/.local/share/applications"
echo -n > "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
while read -r line; do
if [[ $line == Name* ]]; then
echo "${line} (${CONTAINER_NAME})" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
elif [[ $line == Exec* ]]; then
echo "Exec=blend enter -cn ${CONTAINER_NAME} -- ${line:5}" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
elif [[ $line == Icon* ]]; then
if [[ -e "${line:5}" ]]; then
mkdir -p "${HOME}/.local/share/blend/icons/${CONTAINER_NAME}_${file}"; cp "${line:5}" "${HOME}/.local/share/blend/icons/${CONTAINER_NAME}_${file}"
echo "Icon=${HOME}/.local/share/blend/icons/${CONTAINER_NAME}_${file}/$(basename "${line:5}")" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
else
ICON_PATH="$(find /usr/share/icons/hicolor -type f -iname "${line:5}.*" -print -quit 2>/dev/null)"
mkdir -p "$(dirname "${ICON_PATH}" | sed 's/\/usr\/share/'"\/home\/${_uname}"'\/.local\/share/g')"
FINAL_ICON_PATH="$(dirname "${ICON_PATH}" | sed 's/\/usr\/share/'"\/home\/${_uname}"'\/.local\/share/g')/$(echo "${file%.*}").$(basename "${ICON_PATH}" | sed 's/^.*\.//')"
cp "${ICON_PATH}" "${FINAL_ICON_PATH}"
echo "Icon=${FINAL_ICON_PATH}" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
fi
else
echo "$line" >> "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
fi
done < "/usr/share/applications/${file}"
sed -i 's/DBusActivatable=true/DBusActivatable=false/g' "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
sed -i '/^TryExec/d' "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
chmod 755 "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
fi
elif [[ "$action" == *"DELETE"* ]]; then
rm -f "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
elif [[ "$action" == *"MOVED_FROM"* ]]; then
rm -f "${HOME}/.local/share/applications/blend;${CONTAINER_NAME};${file}"
fi
fi ) &
done &
while true; do
for i in /etc/hosts /etc/localtime /etc/resolv.conf; do
cp "/run/host/${i}" / &>/dev/null || :
done
sleep 5
done