4 .
/lib
/functions
/system.sh
5 .
/usr
/share
/libubox
/jshn.sh
9 export MTD_CONFIG_ARGS
=""
14 export SAVE_OVERLAY_PATH
=
15 export SAVE_PARTITIONS
=1
16 export SAVE_INSTALLED_PKGS
=0
17 export SKIP_UNCHANGED
=0
19 export CONF_BACKUP_LIST
=0
26 export UMOUNT_ETCBACKUP_DIR
=0
31 -i) export INTERACTIVE
=1;;
32 -v) export VERBOSE
="$(($VERBOSE + 1))";;
33 -q) export VERBOSE
="$(($VERBOSE - 1))";;
34 -n) export SAVE_CONFIG
=0;;
35 -c) export SAVE_OVERLAY
=1 SAVE_OVERLAY_PATH
=/etc
;;
36 -o) export SAVE_OVERLAY
=1 SAVE_OVERLAY_PATH
=/;;
37 -p) export SAVE_PARTITIONS
=0;;
38 -k) export SAVE_INSTALLED_PKGS
=1;;
39 -u) export SKIP_UNCHANGED
=1;;
40 -b|
--create-backup) export CONF_BACKUP
="$2" NEED_IMAGE
=1; shift;;
41 -r|
--restore-backup) export CONF_RESTORE
="$2" NEED_IMAGE
=1; shift;;
42 -l|
--list-backup) export CONF_BACKUP_LIST
=1;;
43 -f) export CONF_IMAGE
="$2"; shift;;
44 -F|
--force) export FORCE
=1;;
45 -T|
--test) export TEST
=1;;
46 -h|
--help) export HELP
=1; break;;
48 echo "Invalid option: $1" >&2
56 export CONFFILES
=/tmp
/sysupgrade.conffiles
57 export CONF_TAR
=/tmp
/sysupgrade.tgz
58 export ETCBACKUP_DIR
=/etc
/backup
59 export INSTALLED_PACKAGES
=${ETCBACKUP_DIR}/installed_packages.txt
63 [ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 -o $HELP -gt 0 ] && {
65 Usage: $0 [<upgrade-option>...] <image file or URL>
66 $0 [-q] [-i] [-c] [-u] [-o] [-k] <backup-command> <file>
69 -f <config> restore configuration from .tar.gz (file or url)
71 -c attempt to preserve all changed files in /etc/
72 -o attempt to preserve all changed files in /, except those
73 from packages but including changed confs.
74 -u skip from backup files that are equal to those in /rom
75 -n do not save configuration over reflash
76 -p do not attempt to restore the partition table after flash.
77 -k include in backup a list of current installed packages at
80 Verify image and config .tar.gz but do not actually flash.
82 Flash image even if image checks fail, this is dangerous!
85 -h | --help display this help
88 -b | --create-backup <file>
89 create .tar.gz of files specified in sysupgrade.conf
90 then exit. Does not flash an image. If file is '-',
91 i.e. stdout, verbosity is set to 0 (i.e. quiet).
92 -r | --restore-backup <file>
93 restore a .tar.gz created with sysupgrade -b
94 then exit. Does not flash an image. If file is '-',
95 the archive is read from stdin.
97 list the files that would be backed up when calling
98 sysupgrade -b. Does not create a backup file.
104 [ -n "$IMAGE" -a -n "$NEED_IMAGE" ] && {
106 -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
107 Do not specify both -b|-r and a firmware image.
112 # prevent messages from clobbering the tarball when using stdout
113 [ "$CONF_BACKUP" = "-" ] && export VERBOSE
=0
118 BEGIN { conffiles = 0 }
119 /^Conffiles:/ { conffiles = 1; next }
120 !/^ / { conffiles = 0; next }
121 conffiles == 1 { print }
122 ' /usr
/lib
/opkg
/status
125 list_changed_conffiles
() {
126 # Cannot handle spaces in filenames - but opkg cannot either...
127 list_conffiles |
while read file csum
; do
128 [ -r "$file" ] ||
continue
130 echo "${csum} ${file}" | busybox sha256sum
-sc - ||
echo "$file"
134 list_static_conffiles
() {
137 find $
(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
138 /etc
/sysupgrade.conf
/lib
/upgrade
/keep.d
/* 2>/dev
/null
) \
139 \
( -type f
-o -type l \
) $filter 2>/dev
/null
145 ( list_static_conffiles
"$find_filter"; list_changed_conffiles
) |
153 local packagesfiles
=$1.packagesfiles
154 touch "$packagesfiles"
156 if [ "$SAVE_OVERLAY_PATH" = / ]; then
157 local conffiles
=$1.conffiles
158 local keepfiles
=$1.keepfiles
160 list_conffiles | cut
-f2 -d ' ' |
sort -u > "$conffiles"
162 # backup files from /etc/sysupgrade.conf and /lib/upgrade/keep.d, but
163 # ignore those aready controlled by opkg conffiles
164 list_static_conffiles |
sort -u |
165 grep -h -v -x -F -f $conffiles > "$keepfiles"
167 # backup conffiles, but only those changed if '-u'
168 [ $SKIP_UNCHANGED = 1 ] &&
169 list_changed_conffiles |
sort -u > "$conffiles"
171 # do not backup files from packages, except those listed
172 # in conffiles and keep.d
174 find /usr
/lib
/opkg
/info
-type f
-name "*.list" -exec cat {} \
;
175 find /usr
/lib
/opkg
/info
-type f
-name "*.control" -exec sed \
176 -ne '/^Alternatives/{s/^Alternatives: //;s/, /\n/g;p}' {} \
; |
178 } |
grep -v -x -F -f $conffiles |
179 grep -v -x -F -f $keepfiles |
sort -u > "$packagesfiles"
180 rm -f "$keepfiles" "$conffiles"
183 # busybox grep bug when file is empty
184 [ -s "$packagesfiles" ] ||
echo > $packagesfiles
186 ( cd /overlay
/upper
/; find .
$SAVE_OVERLAY_PATH \
( -type f
-o -type l \
) $find_filter |
sed \
188 -e '\,^/etc/board.json$,d' \
189 -e '\,/[^/]*-opkg$,d' \
190 -e '\,^/etc/urandom.seed$,d' \
191 -e "\,^$INSTALLED_PACKAGES$,d" \
192 -e '\,^/usr/lib/opkg/.*,d' \
193 ) |
grep -v -x -F -f $packagesfiles > "$file"
195 rm -f "$packagesfiles"
200 if [ $SAVE_OVERLAY = 1 ]; then
201 [ ! -d /overlay
/upper
/etc
] && {
202 echo "Cannot find '/overlay/upper/etc', required for '-c'" >&2
205 sysupgrade_init_conffiles
="add_overlayfiles"
207 sysupgrade_init_conffiles
="add_conffiles"
211 if [ $SKIP_UNCHANGED = 1 ]; then
213 echo "'/rom/' is required by '-u'"
216 find_filter
='( ( -exec test -e /rom/{} ; -exec cmp -s /{} /rom/{} ; ) -o -print )'
221 do_save_conffiles
() {
224 [ "$(rootfs_type)" = "tmpfs" ] && {
225 echo "Cannot save config while running from ramdisk." >&2
226 ask_bool
0 "Abort" && exit
230 run_hooks
"$CONFFILES" $sysupgrade_init_conffiles
231 ask_bool
0 "Edit config file list" && vi
"$CONFFILES"
233 if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
234 echo "${INSTALLED_PACKAGES}" >> "$CONFFILES"
235 mkdir
-p "$ETCBACKUP_DIR"
236 # Avoid touching filesystem on each backup
237 RAMFS
="$(mktemp -d -t sysupgrade.XXXXXX)"
238 mkdir
-p "$RAMFS/upper" "$RAMFS/work"
239 mount
-t overlay overlay
-o lowerdir
=$ETCBACKUP_DIR,upperdir
=$RAMFS/upper
,workdir
=$RAMFS/work
$ETCBACKUP_DIR &&
240 UMOUNT_ETCBACKUP_DIR
=1 ||
{
241 echo "Cannot mount '$ETCBACKUP_DIR' as tmpfs to avoid touching disk while saving the list of installed packages." >&2
242 ask_bool
0 "Abort" && exit
245 # Format: pkg-name<TAB>{rom,overlay,unkown}
246 # rom is used for pkgs in /rom, even if updated later
247 find /usr
/lib
/opkg
/info
-name "*.control" \
( \
248 \
( -exec test -f /rom
/{} \
; -exec echo {} rom \
; \
) -o \
249 \
( -exec test -f /overlay
/upper
/{} \
; -exec echo {} overlay \
; \
) -o \
250 \
( -exec echo {} unknown \
; \
) \
251 \
) |
sed -e 's,.*/,,;s/\.control /\t/' > ${INSTALLED_PACKAGES}
254 v
"Saving config files..."
255 [ "$VERBOSE" -gt 1 ] && TAR_V
="v" || TAR_V
=""
256 tar c
${TAR_V}zf
"$conf_tar" -T "$CONFFILES" 2>/dev
/null
257 if [ "$?" -ne 0 ]; then
258 echo "Failed to create the configuration backup."
263 [ "$UMOUNT_ETCBACKUP_DIR" -eq 1 ] && {
264 umount
"$ETCBACKUP_DIR"
270 if [ $CONF_BACKUP_LIST -eq 1 ]; then
271 run_hooks
"$CONFFILES" $sysupgrade_init_conffiles
272 [ "$SAVE_INSTALLED_PKGS" -eq 1 ] && echo ${INSTALLED_PACKAGES} >> "$CONFFILES"
278 if [ -n "$CONF_BACKUP" ]; then
279 do_save_conffiles
"$CONF_BACKUP"
283 if [ -n "$CONF_RESTORE" ]; then
284 if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
285 echo "Backup archive '$CONF_RESTORE' not found." >&2
289 [ "$VERBOSE" -gt 1 ] && TAR_V
="v" || TAR_V
=""
290 v
"Restoring config files..."
291 tar -C / -x${TAR_V}zf
"$CONF_RESTORE"
295 type platform_check_image
>/dev
/null
2>/dev
/null ||
{
296 echo "Firmware upgrade is not implemented for this platform." >&2
303 wget
-O/tmp
/sysupgrade.img
"$IMAGE" ||
exit 1
304 IMAGE
=/tmp
/sysupgrade.img
308 IMAGE
="$(readlink -f "$IMAGE")"
312 echo "Image file not found." >&2
317 v
"Image not in /tmp, copying..."
318 cp -f "$IMAGE" /tmp
/sysupgrade.img
319 IMAGE
=/tmp
/sysupgrade.img
323 json_load
"$(/usr/libexec/validate_firmware_image "$IMAGE")" ||
{
324 echo "Failed to check image"
327 json_get_var valid
"valid"
328 [ "$valid" -eq 0 ] && {
329 if [ $FORCE -eq 1 ]; then
330 echo "Image check failed but --force given - will update anyway!" >&2
332 echo "Image check failed." >&2
337 if [ -n "$CONF_IMAGE" ]; then
338 case "$(get_magic_word $CONF_IMAGE cat)" in
342 echo "Invalid config file. Please use only .tar.gz files" >&2
346 get_image
"$CONF_IMAGE" "cat" > "$CONF_TAR"
348 elif ask_bool
$SAVE_CONFIG "Keep config files over reflash"; then
349 [ $TEST -eq 1 ] || do_save_conffiles
"$CONF_TAR"
352 [ $TEST -eq 1 ] ||
rm -f "$CONF_TAR"
356 if [ $TEST -eq 1 ]; then
360 install_bin
/sbin
/upgraded
361 v
"Commencing upgrade. Closing all shell sessions."
363 COMMAND
='/lib/upgrade/do_stage2'
365 if [ -n "$FAILSAFE" ]; then
366 printf '%s\x00%s\x00%s' "$RAM_ROOT" "$IMAGE" "$COMMAND" >/tmp
/sysupgrade
367 lock
-u /tmp
/.failsafe
370 json_add_string prefix
"$RAM_ROOT"
371 json_add_string path
"$IMAGE"
372 [ $FORCE -eq 1 ] && json_add_boolean force
1
373 [ $SAVE_CONFIG -eq 1 ] && json_add_string backup
"$CONF_TAR"
374 json_add_string
command "$COMMAND"
375 json_add_object options
376 json_add_int save_partitions
"$SAVE_PARTITIONS"
379 ubus call system sysupgrade
"$(json_dump)"