tools/devshell/qemu

#!/bin/bash
# Copyright 2017 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.

#### CATEGORY=Run, inspect and debug
### start fuchsia in qemu with a FVM disk
## start fuchsia in qemu with a FVM disk
##
## This command delegates to //zircon/scripts/run-zircon. Flags are documented
## in that script, and can be discovered by passing -h or --help.
##

set -e

source "$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"/lib/image_build_vars.sh || exit $?
source "$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"/lib/fvm.sh || exit $?

for arg in "$@"; do
  if [[ "$arg" = "-h" || "$arg" = "--help" ]]; then
    fx-command-help
    "${FUCHSIA_DIR}/zircon/scripts/run-zircon" -h
    exit 1
  fi
done

authkeys_path="$(get-ssh-authkeys)" || {
  fx-error "Cannot continue without a valid authorized keys file."
  exit 1
}

qemu_dir="${PREBUILT_QEMU_DIR}/bin"

args=(
  -a "${FUCHSIA_ARCH}"
  -q "${qemu_dir}"
  -t "${FUCHSIA_BUILD_DIR}/${IMAGE_QEMU_KERNEL_RAW}"
)

# Construction of a qcow image prevents qemu from writing back to the
# build-produced image file, which could cause timestamp issues with that file.
# Construction of the new ZBI adds ~/.ssh/fuchsia_authorized_keys for SSH
# access.
imgdir="$(mktemp -d ${FUCHSIA_BUILD_DIR}/tmp.XXX)"
if [[ ! -d "${imgdir}" ]]; then
  echo >&2 "Failed to create temporary directory"
  exit 1
fi
trap 'rm -rf "$imgdir"' EXIT

kernelzbi="${imgdir}/fuchsia-ssh.zbi"
args+=(-z "${kernelzbi}")
fx-zbi -o "${kernelzbi}" "${FUCHSIA_BUILD_DIR}/${IMAGE_ZIRCONA_ZBI}" \
  --entry "data/ssh/authorized_keys=${authkeys_path}"

# Try raw image first if it exist. Otherwise see if we can find a fastboot format fvm.
fvm_image="${IMAGE_FVM_RAW}"
if [[ -z "${fvm_image}" ]] ; then
  fvm_image="${IMAGE_FVM_FASTBOOT}"
fi
if [[ -n ${fvm_image} ]] ; then
  fvm_initial="${FUCHSIA_BUILD_DIR}/${fvm_image}"
  fvm_extended="${imgdir}/fvm.blk"
  fx-fvm-extend-image "${fvm_initial}" "${fvm_extended}"
  args+=(-d -D "${fvm_extended}" --diskfmt=raw)
fi

"${FUCHSIA_DIR}/zircon/scripts/run-zircon" "${args[@]}" "$@"