| #!/bin/sh |
| # Copyright 2018 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. |
| |
| # Sets up the stateful filesystem, if necessary. |
| |
| set -eu |
| |
| error() { |
| if [ -t 2 ]; then |
| echo "stateful_setup: error: $*" >&2 |
| else |
| logger -p syslog.err -t "stateful_setup" "$*" |
| fi |
| } |
| |
| die() { |
| error "$*" |
| exit 1 |
| } |
| |
| main() { |
| # If stateful is already mounted, do nothing. |
| if mountpoint -q /mnt/stateful; then |
| exit 0 |
| fi |
| |
| # Create a btrfs filesystem. |
| mkfs.btrfs /dev/vdb || true # The disk may already be formatted. |
| mount -o user_subvol_rm_allowed /dev/vdb /mnt/stateful \ |
| || die "Failed to mount stateful disk" |
| |
| exit 0 |
| } |
| |
| main "$@" |
