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 $src)"
24 [ -e /lib/ld.so.1 ] && {
25 install_file /lib/ld.so.1
28 for link in "$@"; do {
29 dest="$RAM_ROOT/$link"
30 dir="$(dirname $dest)"
32 [ -f "$dest" ] || ln -s $src $dest
36 supivot() { # <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/sys $1/dev $1/tmp $1/overlay && \
39 mount -o noatime,move /proc $1/proc && \
40 pivot_root $1 $1$2 || {
45 mount -o noatime,move $2/sys /sys
46 mount -o noatime,move $2/dev /dev
47 mount -o noatime,move $2/tmp /tmp
48 mount -o noatime,move $2/overlay /overlay 2>&-
52 run_ramfs() { # <command> [...]
53 install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount \
54 /sbin/pivot_root /usr/bin/wget /sbin/reboot /bin/sync /bin/dd \
55 /bin/grep /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" \
56 /bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump \
57 /bin/sleep /bin/zcat /usr/bin/bzcat /usr/bin/printf /usr/bin/wc
60 for file in $RAMFS_COPY_BIN; do
63 install_file /etc/resolv.conf /lib/functions.sh /lib/functions.sh /lib/upgrade/*.sh $RAMFS_COPY_DATA
65 supivot $RAM_ROOT /mnt || {
66 echo "Failed to switch over to ramfs. Please reboot."
70 mount -o remount,ro /mnt
73 grep /overlay /proc/mounts > /dev/null && {
74 mount -o noatime,remount,ro /overlay
78 # spawn a new shell from ramdisk to reduce the probability of cache issues
79 exec /bin/busybox ash -c "$*"
82 kill_remaining() { # [ <signal> ]
83 local sig="${1:-TERM}"
84 echo -n "Sending $sig to remaining processes ... "
87 for stat in /proc/[0-9]*/stat; do
88 [ -f "$stat" ] || continue
90 local pid name state ppid rest
91 read pid name state ppid rest < $stat
92 name="${name#(}"; name="${name%)}"
95 read cmdline < /proc/$pid/cmdline
98 [ -n "$cmdline" ] || continue
101 # Skip essential services
102 *procd*|*ash*|*init*|*watchdog*|*ssh*|*dropbear*|*telnet*|*login*|*hostapd*|*wpa_supplicant*|*nas*) : ;;
106 if [ $pid -ne $$ ] && [ $ppid -ne $$ ]; then
108 kill -$sig $pid 2>/dev/null
117 local arg="$1"; shift
124 local default="$1"; shift;
125 local answer="$default"
127 [ "$INTERACTIVE" -eq 1 ] && {
129 0) echo -n "$* (y/N): ";;
130 *) echo -n "$* (Y/n): ";;
136 *) answer="$default";;
143 [ "$VERBOSE" -ge 1 ] && echo "$@"
147 mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
150 get_image() { # <source> [ <command> ]
156 http://*|ftp://*) cmd="wget -O- -q";;
159 if [ -z "$conc" ]; then
160 local magic="$(eval $cmd $from 2>/dev/null | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
167 eval "$cmd $from 2>/dev/null ${conc:+| $conc}"
171 get_image "$@" | dd bs=2 count=1 2>/dev/null | hexdump -v -n 2 -e '1/1 "%02x"'
175 get_image "$@" | dd bs=4 count=1 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
178 jffs2_copy_config() {
179 if grep rootfs_data /proc/mtd >/dev/null; then
181 mtd -e rootfs_data jffs2write "$CONF_TAR" rootfs_data
184 mtd jffs2write "$CONF_TAR" rootfs
188 default_do_upgrade() {
190 if [ "$SAVE_CONFIG" -eq 1 ]; then
191 get_image "$1" | mtd $MTD_CONFIG_ARGS -j "$CONF_TAR" write - "${PART_NAME:-image}"
193 get_image "$1" | mtd write - "${PART_NAME:-image}"
198 v "Performing system upgrade..."
199 if type 'platform_do_upgrade' >/dev/null 2>/dev/null; then
200 platform_do_upgrade "$ARGV"
202 default_do_upgrade "$ARGV"
205 if [ "$SAVE_CONFIG" -eq 1 ] && type 'platform_copy_config' >/dev/null 2>/dev/null; then
209 v "Upgrade completed"
210 [ -n "$DELAY" ] && sleep "$DELAY"
211 ask_bool 1 "Reboot" && {
212 v "Rebooting system..."
215 echo b 2>/dev/null >/proc/sysrq-trigger