3 export BACKUP_FILE
=sysupgrade.tgz
# file extracted by preinit
5 [ -x /usr
/bin
/ldd
] || ldd
() { LD_TRACE_LOADED_OBJECTS
=1 $
*; }
6 libs
() { ldd $
* 2>/dev
/null |
sed -E 's/(.* => )?(.*) .*/\2/'; }
8 install_file
() { # <file> [ <file> ... ]
11 if [ -L "$file" ]; then
12 target
="$(readlink -f "$file")"
13 dest
="$RAM_ROOT/$file"
15 dir
="$(dirname "$dest")"
17 ln -s "$target" "$dest"
21 dest
="$RAM_ROOT/$file"
22 [ -f "$file" -a ! -f "$dest" ] && {
23 dir
="$(dirname "$dest")"
34 [ -x "$src" ] && files
="$src $(libs $src)"
46 local default
="$1"; shift;
47 local answer
="$default"
49 [ "$INTERACTIVE" -eq 1 ] && {
51 0) echo -n "$* (y/N): ";;
52 *) echo -n "$* (Y/n): ";;
58 *) answer
="$default";;
65 [ -n "$VERBOSE" ] && [ "$VERBOSE" -ge 1 ] && echo "$*" >&2
69 _v
"$(date) upgrade: $@"
70 logger
-p info
-t upgrade
"$@"
81 /bin
/mount |
awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
84 get_image
() { # <source> [ <command> ]
88 if [ -z "$cmd" ]; then
89 local magic
="$(dd if="$from" bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x
"')"
91 1f8b
) cmd
="busybox zcat";;
100 local from
="$1"; shift
104 ( exec 3>&2; get_image
"$from" 2>&1 1>&3 |
grep -v -F ' Broken pipe' ) 2>&1 1>&3 \
105 |
( exec 3>&2; dd "$@" 2>&1 1>&3 |
grep -v -E ' records (in|out)') 2>&1 1>&3
111 (get_image
"$@" |
dd bs
=2 count
=1 |
hexdump -v -n 2 -e '1/1 "%02x"') 2>/dev
/null
115 (get_image
"$@" |
dd bs
=4 count
=1 |
hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev
/null
119 (get_image
"$@" |
dd bs
=8 count
=1 skip
=64) 2>/dev
/null
123 (get_image
"$@" |
dd bs
=3 count
=1 skip
=18) 2>/dev
/null
127 (get_image
"$@" |
dd bs
=1 count
=5 skip
=82) 2>/dev
/null
130 identify_magic_long
() {
152 echo "unknown $magic"
158 local magic
=$
(get_magic_gpt
"$@")
159 [ "$magic" = "EFI PART" ]
163 local magic
=$
(get_magic_vfat
"$@")
164 local magic_fat32
=$
(get_magic_fat32
"$@")
165 [ "$magic" = "FAT" ] ||
[ "$magic_fat32" = "FAT32" ]
168 export_bootdevice
() {
169 local cmdline uuid blockdev uevent line class
170 local MAJOR MINOR DEVNAME DEVTYPE
171 local rootpart
="$(cmdline_get_var root)"
174 PARTUUID
=[a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
]-[a-f0-9
][a-f0-9
])
175 uuid
="${rootpart#PARTUUID=}"
176 uuid
="${uuid%-[a-f0-9][a-f0-9]}"
177 for blockdev
in $
(find /dev
-type b
); do
178 set -- $
(dd if=$blockdev bs
=1 skip
=440 count
=4 2>/dev
/null |
hexdump -v -e '4/1 "%02x "')
179 if [ "$4$3$2$1" = "$uuid" ]; then
180 uevent
="/sys/class/block/${blockdev##*/}/uevent"
185 PARTUUID
=????????
-????
-????
-????
-??????????
0?
/PARTNROFF
=1 | \
186 PARTUUID
=????????
-????
-????
-????
-??????????
02)
187 uuid
="${rootpart#PARTUUID=}"
188 uuid
="${uuid%/PARTNROFF=1}"
190 for disk
in $
(find /dev
-type b
); do
191 set -- $
(dd if=$disk bs
=1 skip
=568 count
=16 2>/dev
/null |
hexdump -v -e '8/1 "%02x "" "2/1 "%02x""-"6/1 "%02x"')
192 if [ "$4$3$2$1-$6$5-$8$7-$9" = "$uuid" ]; then
193 uevent
="/sys/class/block/${disk##*/}/uevent"
199 uevent
="/sys/class/block/${rootpart##*/}/../uevent"
201 0x
[a-f0-9
][a-f0-9
][a-f0-9
] |
0x
[a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
] | \
202 [a-f0-9
][a-f0-9
][a-f0-9
] |
[a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
])
203 rootpart
=0x
${rootpart#0x}
204 for class
in /sys
/class
/block
/*; do
207 done < "$class/uevent"
208 if [ $
((rootpart
/256)) = $MAJOR -a $
((rootpart
%256)) = $MINOR ]; then
209 uevent
="$class/../uevent"
215 if [ -e "$uevent" ]; then
219 export BOOTDEV_MAJOR
=$MAJOR
220 export BOOTDEV_MINOR
=$MINOR
227 export_partdevice
() {
228 local var
="$1" offset
="$2"
229 local uevent line MAJOR MINOR DEVNAME DEVTYPE
231 for uevent
in /sys
/class
/block
/*/uevent
; do
235 if [ "$BOOTDEV_MAJOR" = "$MAJOR" -a $
(($BOOTDEV_MINOR + $offset)) = "$MINOR" -a -b "/dev/$DEVNAME" ]; then
236 export "$var=$DEVNAME"
245 [ "$(echo 01 | hexdump -v -n 2 -e '/2 "%x
"')" = "3031" ] && {
246 echo "${1:0:2}${1:8:2}${1:6:2}${1:4:2}${1:2:2}"
252 get_partitions
() { # <device> <filename>
256 if [ -b "$disk" -o -f "$disk" ]; then
257 v
"Reading partition table from $filename..."
259 local magic
=$
(dd if="$disk" bs
=2 count
=1 skip
=255 2>/dev
/null
)
260 if [ "$magic" != $
'\x55\xAA' ]; then
261 v
"Invalid partition table on $disk"
265 rm -f "/tmp/partmap.$filename"
268 part_magic_efi
"$disk" && {
269 #export_partdevice will fail when partition number is greater than 15, as
270 #the partition major device number is not equal to the disk major device number
271 for part
in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15; do
272 set -- $
(hexdump -v -n 48 -s "$((0x380 + $part * 0x80))" -e '4/4 "%08x"" "4/4 "%08x"" "4/4 "0x%08X "' "$disk")
275 local lba
="$(( $(hex_le32_to_cpu $4) * 0x100000000 + $(hex_le32_to_cpu $3) ))"
276 local end
="$(( $(hex_le32_to_cpu $6) * 0x100000000 + $(hex_le32_to_cpu $5) ))"
277 local num
="$(( $end - $lba + 1 ))"
279 [ "$type" = "00000000000000000000000000000000" ] && continue
281 printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
284 for part
in 1 2 3 4; do
285 set -- $
(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
287 local type="$(( $(hex_le32_to_cpu $1) % 256))"
288 local lba
="$(( $(hex_le32_to_cpu $2) ))"
289 local num
="$(( $(hex_le32_to_cpu $3) ))"
291 [ $type -gt 0 ] ||
continue
293 printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
304 # Flash firmware to MTD partition
306 # $(1): path to image
307 # $(2): (optional) pipe command to extract firmware, e.g. dd bs=n skip=m
308 default_do_upgrade
() {
310 echo 3 > /proc
/sys
/vm
/drop_caches
311 if [ -n "$UPGRADE_BACKUP" ]; then
312 get_image
"$1" "$2" | mtd
$MTD_ARGS $MTD_CONFIG_ARGS -j "$UPGRADE_BACKUP" write - "${PART_NAME:-image}"
314 get_image
"$1" "$2" | mtd
$MTD_ARGS write - "${PART_NAME:-image}"
316 [ $?
-ne 0 ] && exit 1