5 ldd() { LD_TRACE_LOADED_OBJECTS=1 $*; }
6 libs() { ldd $* | awk '{print $3}'; }
8 install_file() { # <file> [ <file> ... ]
10 dest="$RAM_ROOT/$file"
11 [ -f $file -a ! -f $dest ] && {
12 dir="$(dirname $dest)"
19 install_bin() { # <file> [ <symlink> ... ]
22 [ -x "$src" ] && files="$src $(libs $src)"
24 [ -e /lib/ld-linux.so.3 ] && {
25 install_file /lib/ld-linux.so.3
28 for link in "$@"; do {
29 dest="$RAM_ROOT/$link"
30 dir="$(dirname $dest)"
32 [ -f "$dest" ] || ln -s $src $dest
36 pivot() { # <new_root> <old_root>
37 mount | grep "on $1 type" 2>&- 1>&- || mount -o bind $1 $1
38 mkdir -p $1$2 $1/proc $1/dev $1/tmp $1/overlay && \
39 mount -o move /proc $1/proc && \
40 pivot_root $1 $1$2 || {
44 mount -o move $2/dev /dev
45 mount -o move $2/tmp /tmp
46 mount -o move $2/overlay /overlay 2>&-
50 run_ramfs() { # <command> [...]
51 install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount /sbin/pivot_root /usr/bin/wget /sbin/reboot /bin/sync /bin/dd /bin/grep /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" /bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump /bin/sleep /bin/zcat /usr/bin/bzcat
53 for file in $RAMFS_COPY_BIN; do
56 install_file /etc/resolv.conf /etc/functions.sh /lib/upgrade/*.sh $RAMFS_COPY_DATA
58 pivot $RAM_ROOT /mnt || {
59 echo "Failed to switch over to ramfs. Please reboot."
63 mount -o remount,ro /mnt
66 grep /overlay /proc/mounts > /dev/null && {
67 mount -o remount,ro /overlay
71 # spawn a new shell from ramdisk to reduce the probability of cache issues
72 exec /bin/busybox ash -c "$*"
83 local default="$1"; shift;
84 local answer="$default"
86 [ "$INTERACTIVE" -eq 1 ] && {
88 0) echo -n "$* (y/N): ";;
89 *) echo -n "$* (Y/n): ";;
95 *) answer="$default";;
102 [ "$VERBOSE" -ge 1 ] && echo "$@"
106 mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
109 get_image() { # <source> [ <command> ]
115 http://*|ftp://*) cmd="wget -O- -q";;
118 if [ -z "$conc" ]; then
119 local magic="$(eval $cmd $from | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
126 eval "$cmd $from ${conc:+| $conc}"
130 get_image "$@" | dd bs=2 count=1 2>/dev/null | hexdump -v -n 2 -e '1/1 "%02x"'
134 get_image "$@" | dd bs=4 count=1 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
137 refresh_mtd_partitions() {
141 jffs2_copy_config() {
142 if grep rootfs_data /proc/mtd >/dev/null; then
144 mtd -e rootfs_data jffs2write "$CONF_TAR" rootfs_data
147 mtd jffs2write "$CONF_TAR" rootfs
151 default_do_upgrade() {
153 if [ "$SAVE_CONFIG" -eq 1 -a -z "$USE_REFRESH" ]; then
154 get_image "$1" | mtd -j "$CONF_TAR" write - "${PART_NAME:-image}"
156 get_image "$1" | mtd write - "${PART_NAME:-image}"
161 v "Performing system upgrade..."
162 if type 'platform_do_upgrade' >/dev/null 2>/dev/null; then
163 platform_do_upgrade "$ARGV"
165 default_do_upgrade "$ARGV"
168 [ "$SAVE_CONFIG" -eq 1 -a -n "$USE_REFRESH" ] && {
169 v "Refreshing partitions"
170 if type 'platform_refresh_partitions' >/dev/null 2>/dev/null; then
171 platform_refresh_partitions
173 refresh_mtd_partitions
175 if type 'platform_copy_config' >/dev/null 2>/dev/null; then
181 v "Upgrade completed"
182 [ -n "$DELAY" ] && sleep "$DELAY"
183 ask_bool 1 "Reboot" && {
184 v "Rebooting system..."
187 echo b 2>/dev/null >/proc/sysrq-trigger