iankelling.org Git - automated-distro-installer/blob - install-chboot

   1 #!/bin/bash
   2 # Copyright (C) 2016 Ian Kelling
   3
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU General Public License
   6 # as published by the Free Software Foundation; either version 2
   7 # of the License, or (at your option) any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17
  18 [[ $EUID == 0 ]] || exec sudo -E "$BASH_SOURCE" "$@"
  19
  20 x="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
  21 cd ${x%/*}
  22
  23 usage() {
  24     cat <<EOF
  25 Usage: ${0##*/} [-h|--help]
  26 reinstall chboot to /boot subvols, for chboot updates.
  27
  28 We install to /boot in case there is an issue booting and only the /boot
  29 vol is readily available. For the bootstrap subvol, this is the normal
  30 case.
  31 EOF
  32     exit $1
  33 }
  34 case $1 in
  35     -h|--help) usage ;;
  36 esac
  37
  38
  39 e() { echo "$@"; "$@"; }
  40
  41 boot_dev=$(mount | sed -rn "s#^(\S+) on /boot .*#\1#p")
  42 mount_point=$(mktemp -d)
  43 e mount -o subvolid=0 $boot_dev $mount_point
  44
  45 shopt -s nullglob
  46 for dir in $mount_point/*; do
  47     btrfs subvol show $dir &>/dev/null || continue
  48     if [[ -e $dir/boot ]]; then
  49         dir=$dir/boot
  50     fi
  51     e install -m 755 -o root -g root bash-trace $dir
  52     e install -m 755 -o root -g root chboot $dir
  53 done
  54 e umount $mount_point
  55 e rmdir $mount_point