iankelling.org Git - distro-setup/blob - filesystem/usr/local/bin/myupgrade

   1 #!/bin/bash
   2 # Copyright (C) 2019 Ian Kelling
   3 # SPDX-License-Identifier: AGPL-3.0-or-later
   4
   5 # Note: running this inside a cronjob, it wont mail any output if we end
   6 # up rebooting from this script.
   7
   8 if [ -z "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
   9
  10 source /usr/local/lib/err
  11 pre="${0##*/}:"
  12 PATH="/sbin:$PATH"
  13 m() { printf "$pre %s\n"  "$*"; "$@"; }
  14 e() { printf "$pre %s\n"  "$*"; }
  15 err() { echo "[$(date +'%Y-%m-%d %H:%M:%S%z')]: $pre: $*" >&2; }
  16
  17 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
  18
  19 hn=$(hostname -f)
  20 source /a/bin/bash_unpublished/source-state
  21
  22 myreboot() {
  23   for x in {30..1}; do
  24     echo "pid $$. unattended upgrade, rebooting in $((x*10)) seconds" | wall -n
  25     sleep 10
  26   done
  27   for x in {30..1}; do
  28     if ! fuser /var/lib/dpkg/lock &> /dev/null; then
  29       echo "pid $$. unattended upgrade, rebooting now" | pee cat "wall -n"
  30       /a/bin/ds/keyscript-on
  31       /sbin/reboot
  32       exit 0
  33     fi
  34     echo "pid $$. unattended upgrade reboot waiting 10 seconds for dpkg lock" | wall -n
  35     sleep 10
  36   done
  37   echo "pid $$. dpkg locked for 5 minutes, automatic reboot failed" | pee cat "wall -n"
  38 }
  39
  40
  41 if [[ $HOSTNAME != "$MAIL_HOST" ]]; then
  42   ksta=$(needrestart -b | sed -n 's/NEEDRESTART-KSTA: *//p');
  43   case $ksta in
  44     1) : ;;
  45     [023]) myreboot ;;
  46     *) err error: unknown kernel status ;;
  47   esac
  48 fi
  49
  50 # needsrestarts automatic restarts failed.
  51 if ! out=$(/sbin/needrestart -p 2>&1); then
  52   e "$out"
  53 fi