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#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-2.0-only
# Copyright (c) 2023 DisplayLink (UK) Ltd.
evdi_version='1.14.8'
EVDI_DIR=$(dirname "${BASH_SOURCE[0]}")
EVDI_REBOOT_RATIONALE=
if [[ -f /sys/devices/evdi/version ]]; then
EVDI_REBOOT_RATIONALE="Another version of EVDI was loaded before the installation."
fi
copy_evdi_make_log()
{
local {dkms,evdi_make}_log_path
dkms_log_path=$(find "/var/lib/dkms/evdi/$evdi_version" -type f -name make.log)
if [[ -f $dkms_log_path ]]; then
evdi_make_log_path="/var/log/displaylink/evdi_install_make.$(date '+%F-%H%M').log"
mkdir -p /var/log/displaylink
cp "$dkms_log_path" "$evdi_make_log_path"
fi
}
enroll_secureboot_key()
{
if command -v mokutil >/dev/null && mokutil --sb-state | grep -i "SecureBoot enabled" > /dev/null; then
update-secureboot-policy --enroll-key 2> /dev/null || return
if [[ -z $EVDI_REBOOT_RATIONALE && $(mokutil --list-new | wc -l) -gt 0 ]]; then
EVDI_REBOOT_RATIONALE="SecureBoot key was enrolled during the installation."
fi
fi
return 0
}
error()
{
echo >&2 "ERROR: $*"
}
evdi_dkms_install()
{
if dkms status "evdi/$evdi_version" | grep installed &> /dev/null; then
echo "Removing old evdi/$evdi_version module."
dkms remove "evdi/$evdi_version"
fi
dkms install "$EVDI_DIR"
local retval=$?
if [[ $retval == 3 ]]; then
echo "EVDI DKMS module already installed."
elif [[ $retval != 0 ]]; then
copy_evdi_make_log
dkms remove "evdi/$evdi_version" --all
error "Failed to install evdi to the kernel tree."
return 1
fi
if ! enroll_secureboot_key; then
error "Failed to enroll SecureBoot key."
return 1
fi
evdi_requires_reboot || reboot_if_xorg_or_tty_running
}
evdi_add_mod_options()
{
local module_file='/etc/modules/evdi.conf'
[ -d '/etc/modules-load.d' ] && module_file='/etc/modules-load.d/evdi.conf'
echo 'evdi' > "$module_file"
local conf_file='/etc/modprobe.d/evdi.conf'
[[ -f $conf_file ]] && return
echo "options evdi initial_device_count=4" > "$conf_file"
local drm_deps
drm_deps=$(sed -n '/^drm_[[:alpha:]]*_helper/p' /proc/modules | awk '{print $4}' | tr ',' '\n' | sort -u | tr '\n' ' ')
drm_deps=${drm_deps/evdi/}
[[ -z $drm_deps ]] && return 0
echo "softdep evdi pre: $drm_deps" >> "$conf_file"
}
function notify-send2()
{
local user uid program_path
command -v logname >/dev/null \
&& user=$(logname) \
&& [[ $user ]] \
&& uid=$(id -u "$user") \
&& program_path=$(command -v notify-send) \
&& sudo -u "$user" "DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$uid/bus" "$program_path" "$@" \
|| return 0
}
function reboot_if_xorg_or_tty_running()
{
local session=${XDG_SESSION_TYPE-}
if [[ -z $session ]]; then
local session_id=${XDG_SESSION_ID-}
if [[ -z $session_id ]]; then
local user
command -v logname >/dev/null \
&& user=$(logname) \
&& [[ -n $user ]] \
&& session_id=$(loginctl | awk "/$user/ {print \$1; exit}") \
&& [[ -n $session_id ]] \
|| return 0
fi
session=$(loginctl show-session "$session_id" -p Type)
session=${session#*=}
fi
case $session in
x11|tty)
EVDI_REBOOT_RATIONALE="Detected user session type is: $session."
;;
esac
}
function evdi_requires_reboot()
{
[[ -n $EVDI_REBOOT_RATIONALE ]]
}
function evdi_success_message()
{
printf '\n%s\n\n' "DisplayLink evdi module installed successfully."
if evdi_requires_reboot; then
notify-send2 -a "DisplayLinkManager" "Reboot required" \
"DisplayLink evdi module installed successfully. $EVDI_REBOOT_RATIONALE Reboot your computer to ensure proper functioning of the software."
if [[ -f /usr/share/update-notifier/notify-reboot-required ]]; then
/usr/share/update-notifier/notify-reboot-required
fi
echo " Reboot required!"
echo " $EVDI_REBOOT_RATIONALE"
echo " Please, reboot your computer to ensure proper functioning of the software."
echo
fi
}
# if the script is NOT sourced
if ! (return 0 2>/dev/null); then
set -e
evdi_dkms_install
evdi_add_mod_options
evdi_success_message
fi
|
