scripts/upgrade-support/upgrade-fota.sh

   1 #!/bin/bash
   2 set -o errexit
   3 trap 'echo "Aborting due to errexit on ${0##*/}:$LINENO. Exit code: $?" >&2' ERR
   4 set -o errtrace -e -o pipefail
   5
   6
   7 if [ ! -z "${UPGRADE_DEBUG}" ]; then
   8         set -x
   9 fi
  10
  11 PATH=/bin:/usr/bin:/sbin:/usr/sbin
  12 FOTA_DIR="/opt/usr/data/fota"
  13
  14 . "$FOTA_DIR"/upgrade-common.inc
  15
  16 FOTA_UPDATE_PREFIX="/run/upgrade-sysroot"
  17 VERSION_FILE="$FOTA_UPDATE_PREFIX/opt/etc/version"
  18
  19 SCRIPT_NAME="upgrade-fota.sh"
  20 LOG_FILE="/tmp/update-fota.log"
  21
  22 cleanup() {
  23         cleanup_partitions
  24         cleanup_files
  25 }
  26
  27 cleanup_files() {
  28         rm -f -- "$FOTA_DIR"/upgrade-common.inc
  29         rm -f -- "$FOTA_DIR/$SCRIPT_NAME"
  30         rm -f -- "$FOTA_DIR/$CONFIG_FILE"
  31         rm -f -- "$FOTA_DIR/upgrade-trigger.sh"
  32         rm -f -- "$FOTA_DIR/checksum.SHA1"
  33 }
  34
  35 mount() {
  36         # We need to mount the system-data partition to update /opt/etc/version and
  37         # create a .do_rw_update file
  38         mkdir -p "$FOTA_UPDATE_PREFIX/opt"
  39
  40         if ! mount_partition system-data "$FOTA_UPDATE_PREFIX/opt" "rw"; then
  41                 critical_flog "[Error] Unable to mount opt"
  42                 return 1
  43         fi
  44         return 0
  45 }
  46
  47 reboot_to_fota() {
  48         flog "[Info] Write paths..."
  49         touch "$DO_RW_UPDATE_FILE"
  50         flog "[Info] calling sync"
  51
  52         flog "[Info] Switching board partition from $CURRENT_AB, to $NEXT_AB"
  53         if ! device_board_switch_partition $NEXT_AB; then
  54                 critical_flog "[Error] Failed to switch board slot to $NEXT_AB"
  55                 exit 1
  56         fi
  57         cleanup_files
  58         /bin/sync
  59         flog "[Info] Rebooting to fota"
  60
  61         # System will reboot, so the script will be aborted. We don't want this to be
  62         # treated as an error.
  63         set -u errexit
  64         untrap
  65         if ! /sbin/reboot fota; then
  66                 critical_flog "[Error] Failed to reboot fota"
  67                 exit 1
  68         fi
  69 }
  70
  71 prepare_fota_update_dir() {
  72         mkdir -p ${FOTA_UPDATE_PREFIX}
  73 }
  74
  75 prepare_fota_update_dir
  76 check_ab_partition_scheme
  77 check_used_block_device
  78 if ! mount; then
  79         cleanup
  80         exit 1
  81 fi
  82 if ! write_version_info "$VERSION_FILE"; then
  83         cleanup
  84         exit 1
  85 fi
  86
  87 critical_log "RO update: $SCRIPT_NAME success" "$LOG_FILE"
  88
  89 if ! reboot_to_fota; then
  90         cleanup
  91         exit 1
  92 fi