arc/scripts/android-sh-vm

#!/bin/sh
# Copyright 2019 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# TODO(b/131121671): Update this when script with a method that works for
#   user images.

# TODO(b/131121671): Change this when cid becomes dynamic.
target='vsock:5:5555'

is_connected() {
  [ -n "$(adb devices 2>/dev/null | grep "${target}")" ]
}

command=
if [ "$1" = "-c" ]; then
  shift
  command=$@
fi

# adb tries to create .android in the home directory, pass it
# a temporary directory instead.
tmpdir=$(mktemp -d)
export HOME="${tmpdir}"

# Try to start the server first if it's not started.
adb start-server 2>/dev/null

# It is necessary to wait a little bit after a successful 'adb connect'
# before running 'adb shell', else a 'device offline' error occurs and
# the command fails.
# The loop below will wait for ~5 seconds at most incase the VM is
# booting, and will wait for 500ms even after a successful connection
# instead of immediately breaking.
attempts=0
while [ "${attempts}" -le 10 ] && ! is_connected; do
  adb connect ${target} >/dev/null
  sleep 0.5
  attempts=$(( attempts + 1 ))
done

if ! is_connected; then
  echo "$0: Could not connect, is the VM running?"
  rm -rf "${tmpdir}"
  exit 1
fi

adb shell ${command}
ret=$?
rm -rf "${tmpdir}"
exit $ret