4 .
/lib
/functions
/system.sh
8 export MTD_CONFIG_ARGS
=""
13 export SAVE_OVERLAY_PATH
=
14 export SAVE_PARTITIONS
=1
15 export SAVE_INSTALLED_PKGS
=0
16 export SKIP_UNCHANGED
=0
18 export CONF_BACKUP_LIST
=0
25 export UMOUNT_ETCBACKUP_DIR
=0
30 -i) export INTERACTIVE
=1;;
31 -v) export VERBOSE
="$(($VERBOSE + 1))";;
32 -q) export VERBOSE
="$(($VERBOSE - 1))";;
33 -n) export SAVE_CONFIG
=0;;
34 -c) export SAVE_OVERLAY
=1 SAVE_OVERLAY_PATH
=/etc
;;
35 -o) export SAVE_OVERLAY
=1 SAVE_OVERLAY_PATH
=/;;
36 -p) export SAVE_PARTITIONS
=0;;
37 -k) export SAVE_INSTALLED_PKGS
=1;;
38 -u) export SKIP_UNCHANGED
=1;;
39 -b|
--create-backup) export CONF_BACKUP
="$2" NEED_IMAGE
=1; shift;;
40 -r|
--restore-backup) export CONF_RESTORE
="$2" NEED_IMAGE
=1; shift;;
41 -l|
--list-backup) export CONF_BACKUP_LIST
=1;;
42 -f) export CONF_IMAGE
="$2"; shift;;
43 -F|
--force) export FORCE
=1;;
44 -T|
--test) export TEST
=1;;
45 -h|
--help) export HELP
=1; break;;
47 echo "Invalid option: $1" >&2
55 export CONFFILES
=/tmp
/sysupgrade.conffiles
56 export CONF_TAR
=/tmp
/sysupgrade.tgz
57 export ETCBACKUP_DIR
=/etc
/backup
58 export INSTALLED_PACKAGES
=${ETCBACKUP_DIR}/installed_packages.txt
62 [ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 -o $HELP -gt 0 ] && {
64 Usage: $0 [<upgrade-option>...] <image file or URL>
65 $0 [-q] [-i] [-c] [-u] [-o] [-k] <backup-command> <file>
68 -f <config> restore configuration from .tar.gz (file or url)
70 -c attempt to preserve all changed files in /etc/
71 -o attempt to preserve all changed files in /, except those
72 from packages but including changed confs.
73 -u skip from backup files that are equal to those in /rom
74 -n do not save configuration over reflash
75 -p do not attempt to restore the partition table after flash.
76 -k include in backup a list of current installed packages at
79 Verify image and config .tar.gz but do not actually flash.
81 Flash image even if image checks fail, this is dangerous!
84 -h | --help display this help
87 -b | --create-backup <file>
88 create .tar.gz of files specified in sysupgrade.conf
89 then exit. Does not flash an image. If file is '-',
90 i.e. stdout, verbosity is set to 0 (i.e. quiet).
91 -r | --restore-backup <file>
92 restore a .tar.gz created with sysupgrade -b
93 then exit. Does not flash an image. If file is '-',
94 the archive is read from stdin.
96 list the files that would be backed up when calling
97 sysupgrade -b. Does not create a backup file.
103 [ -n "$IMAGE" -a -n "$NEED_IMAGE" ] && {
105 -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
106 Do not specify both -b|-r and a firmware image.
111 # prevent messages from clobbering the tarball when using stdout
112 [ "$CONF_BACKUP" = "-" ] && export VERBOSE
=0
117 BEGIN { conffiles = 0 }
118 /^Conffiles:/ { conffiles = 1; next }
119 !/^ / { conffiles = 0; next }
120 conffiles == 1 { print }
121 ' /usr
/lib
/opkg
/status
124 list_changed_conffiles
() {
125 # Cannot handle spaces in filenames - but opkg cannot either...
126 list_conffiles |
while read file csum
; do
127 [ -r "$file" ] ||
continue
129 echo "${csum} ${file}" | sha256sum
-sc - ||
echo "$file"
135 ( find $
(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
136 /etc
/sysupgrade.conf
/lib
/upgrade
/keep.d
/* 2>/dev
/null
) \
137 \
( -type f
-o -type l \
) $find_filter 2>/dev
/null
;
138 list_changed_conffiles
) |
sort -u > "$file"
145 local packagesfiles
=$1.packagesfiles
146 touch "$packagesfiles"
148 if [ "$SAVE_OVERLAY_PATH" = / ]; then
149 local conffiles
=$1.conffiles
150 local keepfiles
=$1.keepfiles
152 list_conffiles | cut
-f2 -d ' ' |
sort -u > "$conffiles"
154 # backup files from /etc/sysupgrade.conf and /lib/upgrade/keep.d, but
155 # ignore those aready controlled by opkg conffiles
156 find $
(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
157 /etc
/sysupgrade.conf
/lib
/upgrade
/keep.d
/* 2>/dev
/null
) \
158 \
( -type f
-o -type l \
) 2>/dev
/null |
sort -u |
159 grep -h -v -x -F -f $conffiles > "$keepfiles"
161 # backup conffiles, but only those changed if '-u'
162 [ $SKIP_UNCHANGED = 1 ] &&
163 list_changed_conffiles |
sort -u > "$conffiles"
165 # do not backup files from packages, except those listed
166 # in conffiles and keep.d
168 find /usr
/lib
/opkg
/info
-type f
-name "*.list" -exec cat {} \
;
169 find /usr
/lib
/opkg
/info
-type f
-name "*.control" -exec sed \
170 -ne '/^Alternatives/{s/^Alternatives: //;s/, /\n/g;p}' {} \
; |
172 } |
grep -v -x -F -f $conffiles |
173 grep -v -x -F -f $keepfiles |
sort -u > "$packagesfiles"
174 rm -f "$keepfiles" "$conffiles"
177 # busybox grep bug when file is empty
178 [ -s "$packagesfiles" ] ||
echo > $packagesfiles
180 ( cd /overlay
/upper
/; find .
$SAVE_OVERLAY_PATH \
( -type f
-o -type l \
) $find_filter |
sed \
182 -e '\,^/etc/board.json$,d' \
183 -e '\,/[^/]*-opkg$,d' \
184 -e '\,^/etc/urandom.seed$,d' \
185 -e "\,^$INSTALLED_PACKAGES$,d" \
186 -e '\,^/usr/lib/opkg/.*,d' \
187 ) |
grep -v -x -F -f $packagesfiles > "$file"
189 rm -f "$packagesfiles"
195 sysupgrade_image_check
="fwtool_check_signature fwtool_check_image platform_check_image"
197 if [ $SAVE_OVERLAY = 1 ]; then
198 [ ! -d /overlay
/upper
/etc
] && {
199 echo "Cannot find '/overlay/upper/etc', required for '-c'" >&2
202 sysupgrade_init_conffiles
="add_overlayfiles"
204 sysupgrade_init_conffiles
="add_conffiles"
208 if [ $SKIP_UNCHANGED = 1 ]; then
210 echo "'/rom/' is required by '-u'"
213 find_filter
='( ( -exec test -e /rom/{} ; -exec cmp -s /{} /rom/{} ; ) -o -print )'
218 do_save_conffiles
() {
221 [ -z "$(rootfs_type)" ] && {
222 echo "Cannot save config while running from ramdisk." >&2
223 ask_bool
0 "Abort" && exit
227 run_hooks
"$CONFFILES" $sysupgrade_init_conffiles
228 ask_bool
0 "Edit config file list" && vi
"$CONFFILES"
230 if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
231 echo "${INSTALLED_PACKAGES}" >> "$CONFFILES"
232 mkdir
-p "$ETCBACKUP_DIR"
233 # Avoid touching filesystem on each backup
234 RAMFS
="$(mktemp -d -t sysupgrade.XXXXXX)"
235 mkdir
-p "$RAMFS/upper" "$RAMFS/work"
236 mount
-t overlay overlay
-o lowerdir
=$ETCBACKUP_DIR,upperdir
=$RAMFS/upper
,workdir
=$RAMFS/work
$ETCBACKUP_DIR &&
237 UMOUNT_ETCBACKUP_DIR
=1 ||
{
238 echo "Cannot mount '$ETCBACKUP_DIR' as tmpfs to avoid touching disk while saving the list of installed packages." >&2
239 ask_bool
0 "Abort" && exit
242 # Format: pkg-name<TAB>{rom,overlay,unkown}
243 # rom is used for pkgs in /rom, even if updated later
244 find /usr
/lib
/opkg
/info
-name "*.control" \
( \
245 \
( -exec test -f /rom
/{} \
; -exec echo {} rom \
; \
) -o \
246 \
( -exec test -f /overlay
/upper
/{} \
; -exec echo {} overlay \
; \
) -o \
247 \
( -exec echo {} unknown \
; \
) \
248 \
) |
sed -e 's,.*/,,;s/\.control /\t/' > ${INSTALLED_PACKAGES}
251 v
"Saving config files..."
252 [ "$VERBOSE" -gt 1 ] && TAR_V
="v" || TAR_V
=""
253 tar c
${TAR_V}zf
"$conf_tar" -T "$CONFFILES" 2>/dev
/null
254 if [ "$?" -ne 0 ]; then
255 echo "Failed to create the configuration backup."
260 [ "$UMOUNT_ETCBACKUP_DIR" -eq 1 ] && {
261 umount
"$ETCBACKUP_DIR"
267 if [ $CONF_BACKUP_LIST -eq 1 ]; then
268 run_hooks
"$CONFFILES" $sysupgrade_init_conffiles
269 [ "$SAVE_INSTALLED_PKGS" -eq 1 ] && echo ${INSTALLED_PACKAGES} >> "$CONFFILES"
275 if [ -n "$CONF_BACKUP" ]; then
276 do_save_conffiles
"$CONF_BACKUP"
280 if [ -n "$CONF_RESTORE" ]; then
281 if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
282 echo "Backup archive '$CONF_RESTORE' not found." >&2
286 [ "$VERBOSE" -gt 1 ] && TAR_V
="v" || TAR_V
=""
287 tar -C / -x${TAR_V}zf
"$CONF_RESTORE"
291 type platform_check_image
>/dev
/null
2>/dev
/null ||
{
292 echo "Firmware upgrade is not implemented for this platform." >&2
299 wget
-O/tmp
/sysupgrade.img
"$IMAGE"
300 IMAGE
=/tmp
/sysupgrade.img
304 IMAGE
="$(readlink -f "$IMAGE")"
308 echo "Image file not found." >&2
313 v
"Image not in /tmp, copying..."
314 cp -f "$IMAGE" /tmp
/sysupgrade.img
315 IMAGE
=/tmp
/sysupgrade.img
319 for check
in $sysupgrade_image_check; do
320 ( $check "$IMAGE" ) ||
{
321 if [ $FORCE -eq 1 ]; then
322 echo "Image check '$check' failed but --force given - will update anyway!" >&2
325 echo "Image check '$check' failed." >&2
331 if [ -n "$CONF_IMAGE" ]; then
332 case "$(get_magic_word $CONF_IMAGE cat)" in
336 echo "Invalid config file. Please use only .tar.gz files" >&2
340 get_image
"$CONF_IMAGE" "cat" > "$CONF_TAR"
342 elif ask_bool
$SAVE_CONFIG "Keep config files over reflash"; then
343 [ $TEST -eq 1 ] || do_save_conffiles
"$CONF_TAR"
346 [ $TEST -eq 1 ] ||
rm -f "$CONF_TAR"
350 if [ $TEST -eq 1 ]; then
354 if [ $SAVE_PARTITIONS -eq 0 ]; then
355 touch /tmp
/sysupgrade.always.overwrite.bootdisk.partmap
357 rm -f /tmp
/sysupgrade.always.overwrite.bootdisk.partmap
360 install_bin
/sbin
/upgraded
361 v
"Commencing upgrade. Closing all shell sessions."
363 COMMAND
='/lib/upgrade/do_stage2'
365 if [ -n "$FAILSAFE" ]; then
366 printf '%s\x00%s\x00%s' "$RAM_ROOT" "$IMAGE" "$COMMAND" >/tmp
/sysupgrade
367 lock
-u /tmp
/.failsafe
369 ubus call system sysupgrade
"{
370 \"prefix\": $(json_string "$RAM_ROOT"),
371 \"path\": $(json_string "$IMAGE"),
372 \"command\": $(json_string "$COMMAND")