Useful init.d Scripts for Rooted webOS TV

README.md

disable-core-dump.sh

It's very annoying to have a lot of crash dumps in storage when a native app crashed. This script disables file output of crash dump.

Usage

1. Download disable-core-dump.sh the script with following command:

curl -o /var/lib/webosbrew/init.d/disable-core-dump -k https://gist.githubusercontent.com/mariotaku/fab3ee34fae3415c8213d1a1639a6aff/raw/disable-core-dump.sh

2. Change execution permission of disable-core-dump with following command:

chmod +x /var/lib/webosbrew/init.d/disable-core-dump

3. Restart the TV with following command:

reboot

fetch-jailer-conf.sh

If you have a rooted device, there is a high chance that jailer config is not downloaded in /media/developer/.

This file configures webOS Jailer, which controls permission of side-loaded apps.

For many models, system-default config is different (or broken), and can be only fixed by downloading up-to-date jailer config.

Usage

1. Download fetch-jailer-conf.sh the script with following command:

curl -o /var/lib/webosbrew/init.d/fetch-jailer-conf -k https://gist.githubusercontent.com/mariotaku/fab3ee34fae3415c8213d1a1639a6aff/raw/fetch-jailer-conf.sh

2. Change execution permission of fetch-jailer-conf with following command:

chmod +x /var/lib/webosbrew/init.d/fetch-jailer-conf

3. Restart the TV with following command:

reboot

disable-core-dump.sh

#!/bin/sh

sysctl -w kernel.core_pattern='|/bin/false'

fetch-jailer-conf.sh

#!/bin/sh

set -e

sysinfo_endpoint="luna://com.webos.service.tv.systemproperty/getSystemInfo"
sysinfo_payload='{"keys":["sdkVersion"]}'
# language=awk
# shellcheck disable=SC2016
awk_program='BEGIN { FS="\""; } /"sdkVersion"/ { print $4; }'
sdk_version=$(luna-send-pub -q sdkVersion -n 1 "${sysinfo_endpoint}" "${sysinfo_payload}" | awk "${awk_program}")

if [ -z "$sdk_version" ]; then
    echo "failed to get sdk version"
    exit 1
fi

echo "sdkVersion is $sdk_version"

download_conf() {
    echo "Downloading $1"
    curl -s -o "/media/developer/$1" "https://developer.lge.com/common/file/DownloadFile.dev?sdkVersion=${sdk_version}&fileType=$2"
}

# read sdk_version from preferences
if [ -f /var/luna/preferences/webosbrew_jailer_conf_sdk_version ]; then
    prev_sdk_version=$(cat /var/luna/preferences/webosbrew_jailer_conf_sdk_version)
    echo "Previous sdkVersion is $prev_sdk_version"
    if [ "$sdk_version" = "$prev_sdk_version" ]; then
        echo "jailer config is up-to-date"
        exit 0
    fi
fi

download_conf jail_app.conf.sig sig
download_conf jail_app.conf conf

# write the version to preferences
echo "$sdk_version" > /var/luna/preferences/webosbrew_jailer_conf_sdk_version