5 export BACKUP_FILE=sysupgrade.tgz # file extracted by preinit
7 [ -x /usr/bin/ldd ] || ldd() { LD_TRACE_LOADED_OBJECTS=1 $*; }
8 libs() { ldd $* 2>/dev/null | sed -r 's/(.* => )?(.*) .*/\2/'; }
10 install_file() { # <file> [ <file> ... ]
13 if [ -L "$file" ]; then
14 target="$(readlink -f "$file")"
15 dest="$RAM_ROOT/$file"
17 dir="$(dirname "$dest")"
19 ln -s "$target" "$dest"
23 dest="$RAM_ROOT/$file"
24 [ -f "$file" -a ! -f "$dest" ] && {
25 dir="$(dirname "$dest")"
36 [ -x "$src" ] && files="$src $(libs $src)"
48 local default="$1"; shift;
49 local answer="$default"
51 [ "$INTERACTIVE" -eq 1 ] && {
53 0) echo -n "$* (y/N): ";;
54 *) echo -n "$* (Y/n): ";;
60 *) answer="$default";;
67 [ "$VERBOSE" -ge 1 ] && echo "$@"
78 /bin/mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
81 get_image() { # <source> [ <command> ]
85 if [ -z "$cmd" ]; then
86 local magic="$(dd if="$from" bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
94 cat "$from" 2>/dev/null | $cmd
98 (get_image "$@" | dd bs=2 count=1 | hexdump -v -n 2 -e '1/1 "%02x"') 2>/dev/null
102 (get_image "$@" | dd bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
105 export_bootdevice() {
106 local cmdline bootdisk rootpart uuid blockdev uevent line
107 local MAJOR MINOR DEVNAME DEVTYPE
109 if read cmdline < /proc/cmdline; then
112 bootdisk="${cmdline##*block2mtd=}"
113 bootdisk="${bootdisk%%,*}"
116 rootpart="${cmdline##*root=}"
117 rootpart="${rootpart%% *}"
123 uevent="/sys/class/block/${bootdisk##*/}/uevent"
128 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])
129 uuid="${rootpart#PARTUUID=}"
130 uuid="${uuid%-[a-f0-9][a-f0-9]}"
131 for blockdev in $(find /dev -type b); do
132 set -- $(dd if=$blockdev bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
133 if [ "$4$3$2$1" = "$uuid" ]; then
134 uevent="/sys/class/block/${blockdev##*/}/uevent"
140 uevent="/sys/class/block/${rootpart##*/}/../uevent"
144 if [ -e "$uevent" ]; then
148 export BOOTDEV_MAJOR=$MAJOR
149 export BOOTDEV_MINOR=$MINOR
157 export_partdevice() {
158 local var="$1" offset="$2"
159 local uevent line MAJOR MINOR DEVNAME DEVTYPE
161 for uevent in /sys/class/block/*/uevent; do
165 if [ $BOOTDEV_MAJOR = $MAJOR -a $(($BOOTDEV_MINOR + $offset)) = $MINOR -a -b "/dev/$DEVNAME" ]; then
166 export "$var=$DEVNAME"
175 [ "$(echo 01 | hexdump -v -n 2 -e '/2 "%x"')" = "3031" ] && {
176 echo "${1:0:2}${1:8:2}${1:6:2}${1:4:2}${1:2:2}"
182 get_partitions() { # <device> <filename>
186 if [ -b "$disk" -o -f "$disk" ]; then
187 v "Reading partition table from $filename..."
189 local magic=$(dd if="$disk" bs=2 count=1 skip=255 2>/dev/null)
190 if [ "$magic" != $'\x55\xAA' ]; then
191 v "Invalid partition table on $disk"
195 rm -f "/tmp/partmap.$filename"
198 for part in 1 2 3 4; do
199 set -- $(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
201 local type="$(( $(hex_le32_to_cpu $1) % 256))"
202 local lba="$(( $(hex_le32_to_cpu $2) ))"
203 local num="$(( $(hex_le32_to_cpu $3) ))"
205 [ $type -gt 0 ] || continue
207 printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
217 # Flash firmware to MTD partition
219 # $(1): path to image
220 # $(2): (optional) pipe command to extract firmware, e.g. dd bs=n skip=m
221 default_do_upgrade() {
223 if [ "$UPGRADE_OPT_SAVE_CONFIG" -eq 1 ]; then
224 get_image "$1" "$2" | mtd $MTD_ARGS $MTD_CONFIG_ARGS -j "$CONF_TAR" write - "${PART_NAME:-image}"
226 get_image "$1" "$2" | mtd $MTD_ARGS write - "${PART_NAME:-image}"
228 [ $? -ne 0 ] && exit 1