| #!/bin/bash |
| # Copyright 2023 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # In order to use packet sockets, you need to have the net_raw capability. |
| # Running this script drops you into a shell that provides the net_raw |
| # capability ambiently by: |
| # 1. Saving the current set of environment variables to a temporary file |
| # 2. Using setpriv to enter a bash session with the needed ambient capability |
| # 3. Sourcing the saved environment variables |
| |
| set -Eeuox pipefail |
| |
| export -p > /tmp/savedenv |
| |
| CAPS="+NET_RAW" |
| |
| sudo setpriv --inh-caps=$CAPS --ambient-caps=$CAPS --bounding-set=$CAPS \ |
| --reuid="$(id -u $(whoami))" --init-groups \ |
| /bin/bash -c "source /tmp/savedenv; rm /tmp/savedenv; /usr/bin/env $SHELL" |
| |
