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This commit is contained in:
domenico
422
package/base-files/files/sbin/sysupgrade
Executable file
422
package/base-files/files/sbin/sysupgrade
Executable file
@@ -0,0 +1,422 @@
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#!/bin/sh
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. /lib/functions.sh
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. /lib/functions/system.sh
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. /usr/share/libubox/jshn.sh
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# File-local constants
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CONF_TAR=/tmp/sysupgrade.tgz
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ETCBACKUP_DIR=/etc/backup
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INSTALLED_PACKAGES=${ETCBACKUP_DIR}/installed_packages.txt
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COMMAND=/lib/upgrade/do_stage2
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# File-local globals
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SAVE_OVERLAY=0
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SAVE_OVERLAY_PATH=
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SAVE_PARTITIONS=1
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SAVE_INSTALLED_PKGS=0
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SKIP_UNCHANGED=0
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CONF_IMAGE=
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CONF_BACKUP_LIST=0
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CONF_BACKUP=
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CONF_RESTORE=
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NEED_IMAGE=
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HELP=0
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TEST=0
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# Globals accessed in other files
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export MTD_ARGS=""
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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 IGNORE_MINOR_COMPAT=0
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export FORCE=0
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export CONFFILES=/tmp/sysupgrade.conffiles
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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) SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/etc;;
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-o) SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/;;
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-p) SAVE_PARTITIONS=0;;
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-k) SAVE_INSTALLED_PKGS=1;;
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-u) SKIP_UNCHANGED=1;;
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-b|--create-backup) CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
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-r|--restore-backup) CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
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-l|--list-backup) CONF_BACKUP_LIST=1;;
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-f) CONF_IMAGE="$2"; shift;;
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-F|--force) export FORCE=1;;
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-T|--test) TEST=1;;
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-h|--help) HELP=1; break;;
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--ignore-minor-compat-version) export IGNORE_MINOR_COMPAT=1;;
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-*)
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echo "Invalid option: $1" >&2
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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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print_help() {
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cat <<EOF
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Usage: $0 [<upgrade-option>...] <image file or URL>
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$0 [-q] [-i] [-c] [-u] [-o] [-k] <backup-command> <file>
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upgrade-option:
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-f <config> restore configuration from .tar.gz (file or url)
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-i interactive mode
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-c attempt to preserve all changed files in /etc/
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-o attempt to preserve all changed files in /, except those
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from packages but including changed confs.
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-u skip from backup files that are equal to those in /rom
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-n do not save configuration over reflash
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-p do not attempt to restore the partition table after flash.
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-k include in backup a list of current installed packages at
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$INSTALLED_PACKAGES
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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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--ignore-minor-compat-version
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Flash image even if the minor compat version is incompatible.
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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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}
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IMAGE="$1"
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if [ $HELP -gt 0 ]; then
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print_help
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exit 0
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fi
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if [ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 ]; then
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print_help
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exit 1
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fi
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[ -n "$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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if [ -f /usr/lib/opkg/status ]; then
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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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elif [ -d /lib/apk/packages ]; then
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conffiles=""
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for file in /lib/apk/packages/*.conffiles_static; do
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conffiles="$(echo -e "$(cat $file)\n$conffiles")"
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done
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echo "$conffiles"
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fi
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}
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list_changed_conffiles() {
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# Cannot handle spaces in filenames - but opkg cannot either...
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list_conffiles | while read file csum; do
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[ -r "$file" ] || continue
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echo "${csum} ${file}" | busybox sha256sum -sc - || echo "$file"
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done
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}
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list_static_conffiles() {
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local filter=$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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\( -type f -o -type l \) $filter 2>/dev/null
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}
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build_list_of_backup_config_files() {
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local file="$1"
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( list_static_conffiles "$find_filter"; list_changed_conffiles ) |
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sort -u > "$file"
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return 0
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}
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build_list_of_backup_overlay_files() {
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local file="$1"
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local packagesfiles=$1.packagesfiles
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touch "$packagesfiles"
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if [ "$SAVE_OVERLAY_PATH" = / ]; then
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local conffiles=$1.conffiles
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local keepfiles=$1.keepfiles
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list_conffiles | cut -f2 -d ' ' | sort -u > "$conffiles"
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# backup files from /etc/sysupgrade.conf and /lib/upgrade/keep.d, but
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# ignore those aready controlled by opkg conffiles
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list_static_conffiles | sort -u |
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grep -h -v -x -F -f $conffiles > "$keepfiles"
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# backup conffiles, but only those changed if '-u'
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[ $SKIP_UNCHANGED = 1 ] &&
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list_changed_conffiles | sort -u > "$conffiles"
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# do not backup files from packages, except those listed
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# in conffiles and keep.d
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{
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find /usr/lib/opkg/info -type f -name "*.list" -exec cat {} \;
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find /usr/lib/opkg/info -type f -name "*.control" -exec sed \
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-ne '/^Alternatives/{s/^Alternatives: //;s/, /\n/g;p}' {} \; |
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cut -f2 -d:
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} | grep -v -x -F -f $conffiles |
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grep -v -x -F -f $keepfiles | sort -u > "$packagesfiles"
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rm -f "$keepfiles" "$conffiles"
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fi
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# busybox grep bug when file is empty
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[ -s "$packagesfiles" ] || echo > $packagesfiles
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( cd /overlay/upper/; find .$SAVE_OVERLAY_PATH \( -type f -o -type l \) $find_filter | sed \
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-e 's,^\.,,' \
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-e '\,^/etc/board.json$,d' \
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-e '\,/[^/]*-opkg$,d' \
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-e '\,^/etc/urandom.seed$,d' \
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-e "\,^$INSTALLED_PACKAGES$,d" \
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-e '\,^/usr/lib/opkg/.*,d' \
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) | grep -v -x -F -f $packagesfiles > "$file"
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rm -f "$packagesfiles"
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return 0
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}
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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' or '-o'" >&2
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exit 1
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}
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sysupgrade_init_conffiles="build_list_of_backup_overlay_files"
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else
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sysupgrade_init_conffiles="build_list_of_backup_config_files"
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fi
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find_filter=""
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if [ $SKIP_UNCHANGED = 1 ]; then
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[ ! -d /rom/ ] && {
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echo "'/rom/' is required by '-u'"
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exit 1
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}
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find_filter='( ( -exec test -e /rom/{} ; -exec cmp -s /{} /rom/{} ; ) -o -print )'
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fi
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include /lib/upgrade
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create_backup_archive() {
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local conf_tar="$1"
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local disabled
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local err
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[ "$(rootfs_type)" = "tmpfs" ] && {
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echo "Cannot save config while running from ramdisk." >&2
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ask_bool 0 "Abort" && exit
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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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[ "$conf_tar" != "-" ] || conf_tar=""
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v "Saving config files..."
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[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
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sed -i -e 's,^/,,' "$CONFFILES"
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set -o pipefail
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{
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local ret=0
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if [ $ret -eq 0 ]; then
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for service in /etc/init.d/*; do
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if ! $service enabled; then
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disabled="$disabled$service disable\n"
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fi
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done
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disabled="$disabled\nexit 0"
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tar_print_member "/etc/uci-defaults/10_disable_services" "$(echo -e $disabled)" || ret=1
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fi
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# Part of archive with installed packages info
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if [ $ret -eq 0 ]; then
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if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
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# Format: pkg-name<TAB>{rom,overlay,unknown}
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# rom is used for pkgs in /rom, even if updated later
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tar_print_member "$INSTALLED_PACKAGES" "$(find /usr/lib/opkg/info -name "*.control" \( \
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\( -exec test -f /rom/{} \; -exec echo {} rom \; \) -o \
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\( -exec test -f /overlay/upper/{} \; -exec echo {} overlay \; \) -o \
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\( -exec echo {} unknown \; \) \
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\) | sed -e 's,.*/,,;s/\.control /\t/')" || ret=1
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fi
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fi
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# Rest of archive with config files and ending padding
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if [ $ret -eq 0 ]; then
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tar c${TAR_V} -C / -T "$CONFFILES" || ret=1
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fi
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[ $ret -eq 0 ]
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} | gzip > "${conf_tar:-/proc/self/fd/1}"
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err=$?
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set +o pipefail
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if [ "$err" -ne 0 ]; then
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echo "Failed to create the configuration backup."
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[ -f "$conf_tar" ] && rm -f "$conf_tar"
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fi
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rm -f "$CONFFILES"
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return "$err"
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}
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if [ $CONF_BACKUP_LIST -eq 1 ]; then
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run_hooks "$CONFFILES" $sysupgrade_init_conffiles
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[ "$SAVE_INSTALLED_PKGS" -eq 1 ] && echo ${INSTALLED_PACKAGES} >> "$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 "$CONF_BACKUP" ]; then
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create_backup_archive "$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." >&2
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exit 1
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fi
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[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
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v "Restoring config files..."
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if [ "$(type -t platform_restore_backup)" == 'platform_restore_backup' ]; then
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platform_restore_backup "$TAR_V"
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else
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tar -C / -x${TAR_V}zf "$CONF_RESTORE"
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fi
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exit $?
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fi
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type platform_check_image >/dev/null 2>/dev/null || {
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echo "Firmware upgrade is not implemented for this platform." >&2
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exit 1
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}
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case "$IMAGE" in
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http://*|\
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https://*)
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wget -O/tmp/sysupgrade.img "$IMAGE" || exit 1
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IMAGE=/tmp/sysupgrade.img
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;;
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esac
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IMAGE="$(readlink -f "$IMAGE")"
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case "$IMAGE" in
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'')
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echo "Image file not found." >&2
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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 "$IMAGE" /tmp/sysupgrade.img
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IMAGE=/tmp/sysupgrade.img
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;;
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esac
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json_load "$(/usr/libexec/validate_firmware_image "$IMAGE")" || {
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echo "Failed to check image"
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exit 1
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}
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json_get_var valid "valid"
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[ "$valid" -eq 0 ] && {
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if [ $FORCE -eq 1 ]; then
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echo "Image check failed but --force given - will update anyway!" >&2
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else
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echo "Image check failed." >&2
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exit 1
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fi
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}
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if [ -n "$CONF_IMAGE" ]; then
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case "$(get_magic_word $CONF_IMAGE cat)" in
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# .gz files
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1f8b) ;;
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*)
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echo "Invalid config file. Please use only .tar.gz files" >&2
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exit 1
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;;
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esac
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get_image "$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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[ $TEST -eq 1 ] || create_backup_archive "$CONF_TAR" || exit
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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 [ $TEST -eq 1 ]; then
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exit 0
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fi
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install_bin /sbin/upgraded
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v "Commencing upgrade. Closing all shell sessions."
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if [ -n "$FAILSAFE" ]; then
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printf '%s\x00%s\x00%s' "$RAM_ROOT" "$IMAGE" "$COMMAND" >/tmp/sysupgrade
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lock -u /tmp/.failsafe
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else
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json_init
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json_add_string prefix "$RAM_ROOT"
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json_add_string path "$IMAGE"
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[ $FORCE -eq 1 ] && json_add_boolean force 1
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[ $SAVE_CONFIG -eq 1 ] && json_add_string backup "$CONF_TAR"
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json_add_string command "$COMMAND"
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json_add_object options
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json_add_int save_partitions "$SAVE_PARTITIONS"
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json_close_object
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ubus call system sysupgrade "$(json_dump)"
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fi
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Reference in New Issue
Block a user