6ed389da85
Many packages use the opkg conffiles field to list configuration files that are to be retained on upgrades. Make this work on systems without opkg. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
283 lines
6.7 KiB
Bash
Executable file
283 lines
6.7 KiB
Bash
Executable file
#!/bin/sh
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. /lib/functions.sh
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. /lib/functions/system.sh
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# initialize defaults
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export MTD_CONFIG_ARGS=""
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export INTERACTIVE=0
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export VERBOSE=1
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export SAVE_CONFIG=1
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export SAVE_OVERLAY=0
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export SAVE_PARTITIONS=1
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export CONF_IMAGE=
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export CONF_BACKUP_LIST=0
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export CONF_BACKUP=
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export CONF_RESTORE=
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export NEED_IMAGE=
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export HELP=0
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export FORCE=0
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export TEST=0
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# parse options
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while [ -n "$1" ]; do
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case "$1" in
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-i) export INTERACTIVE=1;;
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-v) export VERBOSE="$(($VERBOSE + 1))";;
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-q) export VERBOSE="$(($VERBOSE - 1))";;
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-n) export SAVE_CONFIG=0;;
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-c) export SAVE_OVERLAY=1;;
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-p) export SAVE_PARTITIONS=0;;
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-b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
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-r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
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-l|--list-backup) export CONF_BACKUP_LIST=1; break;;
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-f) export CONF_IMAGE="$2"; shift;;
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-F|--force) export FORCE=1;;
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-T|--test) export TEST=1;;
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-h|--help) export HELP=1; break;;
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-*)
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echo "Invalid option: $1"
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exit 1
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;;
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*) break;;
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esac
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shift;
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done
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export CONFFILES=/tmp/sysupgrade.conffiles
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export CONF_TAR=/tmp/sysupgrade.tgz
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IMAGE="$1"
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[ -z "$IMAGE" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
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cat <<EOF
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Usage: $0 [<upgrade-option>...] <image file or URL>
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$0 [-q] [-i] <backup-command> <file>
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upgrade-option:
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-f <config> restore configuration from .tar.gz (file or url)
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-i interactive mode
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-c attempt to preserve all changed files in /etc/
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-n do not save configuration over reflash
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-p do not attempt to restore the partition table after flash.
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-T | --test
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Verify image and config .tar.gz but do not actually flash.
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-F | --force
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Flash image even if image checks fail, this is dangerous!
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-q less verbose
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-v more verbose
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-h | --help display this help
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backup-command:
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-b | --create-backup <file>
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create .tar.gz of files specified in sysupgrade.conf
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then exit. Does not flash an image. If file is '-',
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i.e. stdout, verbosity is set to 0 (i.e. quiet).
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-r | --restore-backup <file>
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restore a .tar.gz created with sysupgrade -b
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then exit. Does not flash an image. If file is '-',
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the archive is read from stdin.
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-l | --list-backup
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list the files that would be backed up when calling
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sysupgrade -b. Does not create a backup file.
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EOF
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exit 1
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}
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[ -n "$IMAGE" -a -n "$NEED_IMAGE" ] && {
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cat <<-EOF
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-b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
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Do not specify both -b|-r and a firmware image.
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EOF
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exit 1
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}
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# prevent messages from clobbering the tarball when using stdout
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[ "$CONF_BACKUP" = "-" ] && export VERBOSE=0
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list_conffiles() {
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awk '
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BEGIN { conffiles = 0 }
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/^Conffiles:/ { conffiles = 1; next }
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!/^ / { conffiles = 0; next }
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conffiles == 1 { print }
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' /usr/lib/opkg/status
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}
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list_changed_conffiles() {
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# Cannot handle spaces in filenames - but opkg cannot either...
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list_conffiles | while read file csum; do
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[ -r "$file" ] || continue
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echo "${csum} ${file}" | sha256sum -sc - || echo "$file"
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done
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}
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add_uci_conffiles() {
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local file="$1"
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( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
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/etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
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-type f -o -type l 2>/dev/null;
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list_changed_conffiles ) | sort -u > "$file"
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return 0
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}
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add_overlayfiles() {
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local file="$1"
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find /overlay/upper/etc/ -type f -o -type l | sed \
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-e 's,^/overlay\/upper/,/,' \
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-e '\,/META_[a-zA-Z0-9]*$,d' \
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-e '\,/functions.sh$,d' \
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-e '\,/[^/]*-opkg$,d' \
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> "$file"
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return 0
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}
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# hooks
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sysupgrade_image_check="fwtool_check_image platform_check_image"
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sysupgrade_pre_upgrade="fwtool_pre_upgrade"
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if [ $SAVE_OVERLAY = 1 ]; then
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[ ! -d /overlay/upper/etc ] && {
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echo "Cannot find '/overlay/upper/etc', required for '-c'"
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exit 1
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}
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sysupgrade_init_conffiles="add_overlayfiles"
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else
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sysupgrade_init_conffiles="add_uci_conffiles"
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fi
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include /lib/upgrade
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do_save_conffiles() {
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local conf_tar="${1:-$CONF_TAR}"
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[ -z "$(rootfs_type)" ] && {
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echo "Cannot save config while running from ramdisk."
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ask_bool 0 "Abort" && exit
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rm -f "$conf_tar"
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return 0
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}
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run_hooks "$CONFFILES" $sysupgrade_init_conffiles
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ask_bool 0 "Edit config file list" && vi "$CONFFILES"
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v "Saving config files..."
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[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
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tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
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rm -f "$CONFFILES"
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}
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if [ $CONF_BACKUP_LIST -eq 1 ]; then
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run_hooks "$CONFFILES" $sysupgrade_init_conffiles
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cat "$CONFFILES"
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rm -f "$CONFFILES"
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exit 0
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fi
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if [ -n "$CONF_BACKUP" ]; then
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do_save_conffiles "$CONF_BACKUP"
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exit $?
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fi
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if [ -n "$CONF_RESTORE" ]; then
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if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
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echo "Backup archive '$CONF_RESTORE' not found."
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exit 1
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fi
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[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
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tar -C / -x${TAR_V}zf "$CONF_RESTORE"
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exit $?
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fi
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type platform_check_image >/dev/null 2>/dev/null || {
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echo "Firmware upgrade is not implemented for this platform."
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exit 1
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}
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case "$IMAGE" in
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http://*)
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wget -O/tmp/sysupgrade.img "$IMAGE"
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IMAGE=/tmp/sysupgrade.img
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;;
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esac
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IMAGE="$(readlink -f "$IMAGE")"
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case "$IMAGE" in
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'')
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echo "Image file not found."
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exit 1
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;;
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/tmp/*) ;;
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*)
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v "Image not in /tmp, copying..."
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cp -f "$IMAGE" /tmp/sysupgrade.img
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IMAGE=/tmp/sysupgrade.img
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;;
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esac
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export ARGV="$IMAGE"
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export ARGC=1
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for check in $sysupgrade_image_check; do
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( $check "$IMAGE" ) || {
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if [ $FORCE -eq 1 ]; then
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echo "Image check '$check' failed but --force given - will update anyway!"
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break
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else
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echo "Image check '$check' failed."
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exit 1
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fi
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}
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done
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if [ -n "$CONF_IMAGE" ]; then
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case "$(get_magic_word $CONF_IMAGE cat)" in
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# .gz files
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1f8b) ;;
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*)
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echo "Invalid config file. Please use only .tar.gz files"
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exit 1
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;;
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esac
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get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
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export SAVE_CONFIG=1
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elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
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[ $TEST -eq 1 ] || do_save_conffiles
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export SAVE_CONFIG=1
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else
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[ $TEST -eq 1 ] || rm -f "$CONF_TAR"
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export SAVE_CONFIG=0
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fi
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if [ $TEST -eq 1 ]; then
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exit 0
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fi
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if [ $SAVE_PARTITIONS -eq 0 ]; then
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touch /tmp/sysupgrade.always.overwrite.bootdisk.partmap
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else
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rm -f /tmp/sysupgrade.always.overwrite.bootdisk.partmap
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fi
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run_hooks "" $sysupgrade_pre_upgrade
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install_bin /sbin/upgraded
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v "Commencing upgrade. All shell sessions will be closed now."
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COMMAND='. /lib/functions.sh; include /lib/upgrade; do_upgrade_stage2'
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if [ -n "$FAILSAFE" ]; then
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printf '%s\x00%s\x00%s' "$RAM_ROOT" "$IMAGE" "$COMMAND" >/tmp/sysupgrade
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lock -u /tmp/.failsafe
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else
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ubus call system sysupgrade "{
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\"prefix\": $(json_string "$RAM_ROOT"),
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\"path\": $(json_string "$IMAGE"),
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\"command\": $(json_string "$COMMAND")
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}"
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fi
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