You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
345 lines
7.9 KiB
Bash
345 lines
7.9 KiB
Bash
#!/bin/sh
|
|
|
|
RAM_ROOT=/tmp/root
|
|
|
|
[ -x /usr/bin/ldd ] || ldd() { LD_TRACE_LOADED_OBJECTS=1 $*; }
|
|
libs() { ldd $* 2>/dev/null | sed -r 's/(.* => )?(.*) .*/\2/'; }
|
|
|
|
install_file() { # <file> [ <file> ... ]
|
|
for file in "$@"; do
|
|
dest="$RAM_ROOT/$file"
|
|
[ -f $file -a ! -f $dest ] && {
|
|
dir="$(dirname $dest)"
|
|
mkdir -p "$dir"
|
|
cp $file $dest
|
|
}
|
|
done
|
|
}
|
|
|
|
install_bin() { # <file> [ <symlink> ... ]
|
|
src=$1
|
|
files=$1
|
|
[ -x "$src" ] && files="$src $(libs $src)"
|
|
install_file $files
|
|
shift
|
|
for link in "$@"; do {
|
|
dest="$RAM_ROOT/$link"
|
|
dir="$(dirname $dest)"
|
|
mkdir -p "$dir"
|
|
[ -f "$dest" ] || ln -s $src $dest
|
|
}; done
|
|
}
|
|
|
|
supivot() { # <new_root> <old_root>
|
|
/bin/mount | grep "on $1 type" 2>&- 1>&- || /bin/mount -o bind $1 $1
|
|
mkdir -p $1$2 $1/proc $1/sys $1/dev $1/tmp $1/overlay && \
|
|
/bin/mount -o noatime,move /proc $1/proc && \
|
|
pivot_root $1 $1$2 || {
|
|
/bin/umount -l $1 $1
|
|
return 1
|
|
}
|
|
|
|
/bin/mount -o noatime,move $2/sys /sys
|
|
/bin/mount -o noatime,move $2/dev /dev
|
|
/bin/mount -o noatime,move $2/tmp /tmp
|
|
/bin/mount -o noatime,move $2/overlay /overlay 2>&-
|
|
return 0
|
|
}
|
|
|
|
run_ramfs() { # <command> [...]
|
|
install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount \
|
|
/sbin/pivot_root /sbin/reboot /bin/sync /bin/dd /bin/grep \
|
|
/bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" /bin/dd \
|
|
/bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump \
|
|
/bin/sleep /bin/zcat /usr/bin/bzcat /usr/bin/printf /usr/bin/wc \
|
|
/bin/cut /usr/bin/printf /bin/sync /bin/mkdir /bin/rmdir \
|
|
/bin/rm /usr/bin/basename /bin/kill /bin/chmod /usr/bin/find \
|
|
/bin/mknod
|
|
|
|
install_bin /bin/uclient-fetch /bin/wget
|
|
install_bin /sbin/mtd
|
|
install_bin /sbin/mount_root
|
|
install_bin /sbin/snapshot
|
|
install_bin /sbin/snapshot_tool
|
|
install_bin /usr/sbin/ubiupdatevol
|
|
install_bin /usr/sbin/ubiattach
|
|
install_bin /usr/sbin/ubiblock
|
|
install_bin /usr/sbin/ubiformat
|
|
install_bin /usr/sbin/ubidetach
|
|
install_bin /usr/sbin/ubirsvol
|
|
install_bin /usr/sbin/ubirmvol
|
|
install_bin /usr/sbin/ubimkvol
|
|
install_bin /usr/sbin/partx
|
|
install_bin /usr/sbin/losetup
|
|
install_bin /usr/sbin/mkfs.ext4
|
|
for file in $RAMFS_COPY_BIN; do
|
|
install_bin ${file//:/ }
|
|
done
|
|
install_file /etc/resolv.conf /lib/*.sh /lib/functions/*.sh /lib/upgrade/*.sh $RAMFS_COPY_DATA
|
|
|
|
[ -L "/lib64" ] && ln -s /lib $RAM_ROOT/lib64
|
|
|
|
supivot $RAM_ROOT /mnt || {
|
|
echo "Failed to switch over to ramfs. Please reboot."
|
|
exit 1
|
|
}
|
|
|
|
/bin/mount -o remount,ro /mnt
|
|
/bin/umount -l /mnt
|
|
|
|
grep /overlay /proc/mounts > /dev/null && {
|
|
/bin/mount -o noatime,remount,ro /overlay
|
|
/bin/umount -l /overlay
|
|
}
|
|
|
|
# spawn a new shell from ramdisk to reduce the probability of cache issues
|
|
exec /bin/busybox ash -c "$*"
|
|
}
|
|
|
|
kill_remaining() { # [ <signal> ]
|
|
local sig="${1:-TERM}"
|
|
echo -n "Sending $sig to remaining processes ... "
|
|
|
|
local my_pid=$$
|
|
local my_ppid=$(cut -d' ' -f4 /proc/$my_pid/stat)
|
|
local my_ppisupgraded=
|
|
grep -q upgraded /proc/$my_ppid/cmdline >/dev/null && {
|
|
local my_ppisupgraded=1
|
|
}
|
|
|
|
local stat
|
|
for stat in /proc/[0-9]*/stat; do
|
|
[ -f "$stat" ] || continue
|
|
|
|
local pid name state ppid rest
|
|
read pid name state ppid rest < $stat
|
|
name="${name#(}"; name="${name%)}"
|
|
|
|
local cmdline
|
|
read cmdline < /proc/$pid/cmdline
|
|
|
|
# Skip kernel threads
|
|
[ -n "$cmdline" ] || continue
|
|
|
|
if [ $$ -eq 1 ] || [ $my_ppid -eq 1 ] && [ -n "$my_ppisupgraded" ]; then
|
|
# Running as init process, kill everything except me
|
|
if [ $pid -ne $$ ] && [ $pid -ne $my_ppid ]; then
|
|
echo -n "$name "
|
|
kill -$sig $pid 2>/dev/null
|
|
fi
|
|
else
|
|
case "$name" in
|
|
# Skip essential services
|
|
*procd*|*ash*|*init*|*watchdog*|*ssh*|*dropbear*|*telnet*|*login*|*hostapd*|*wpa_supplicant*|*nas*|*relayd*) : ;;
|
|
|
|
# Killable process
|
|
*)
|
|
if [ $pid -ne $$ ] && [ $ppid -ne $$ ]; then
|
|
echo -n "$name "
|
|
kill -$sig $pid 2>/dev/null
|
|
fi
|
|
;;
|
|
esac
|
|
fi
|
|
done
|
|
echo ""
|
|
}
|
|
|
|
run_hooks() {
|
|
local arg="$1"; shift
|
|
for func in "$@"; do
|
|
eval "$func $arg"
|
|
done
|
|
}
|
|
|
|
ask_bool() {
|
|
local default="$1"; shift;
|
|
local answer="$default"
|
|
|
|
[ "$INTERACTIVE" -eq 1 ] && {
|
|
case "$default" in
|
|
0) echo -n "$* (y/N): ";;
|
|
*) echo -n "$* (Y/n): ";;
|
|
esac
|
|
read answer
|
|
case "$answer" in
|
|
y*) answer=1;;
|
|
n*) answer=0;;
|
|
*) answer="$default";;
|
|
esac
|
|
}
|
|
[ "$answer" -gt 0 ]
|
|
}
|
|
|
|
v() {
|
|
[ "$VERBOSE" -ge 1 ] && echo "$@"
|
|
}
|
|
|
|
rootfs_type() {
|
|
/bin/mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
|
|
}
|
|
|
|
get_image() { # <source> [ <command> ]
|
|
local from="$1"
|
|
local conc="$2"
|
|
local cmd
|
|
|
|
case "$from" in
|
|
http://*|ftp://*) cmd="wget -O- -q";;
|
|
*) cmd="cat";;
|
|
esac
|
|
if [ -z "$conc" ]; then
|
|
local magic="$(eval $cmd \"$from\" 2>/dev/null | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
|
|
case "$magic" in
|
|
1f8b) conc="zcat";;
|
|
425a) conc="bzcat";;
|
|
esac
|
|
fi
|
|
|
|
eval "$cmd \"$from\" 2>/dev/null ${conc:+| $conc}"
|
|
}
|
|
|
|
get_magic_word() {
|
|
(get_image "$@" | dd bs=2 count=1 | hexdump -v -n 2 -e '1/1 "%02x"') 2>/dev/null
|
|
}
|
|
|
|
get_magic_long() {
|
|
(get_image "$@" | dd bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
|
|
}
|
|
|
|
export_bootdevice() {
|
|
local cmdline uuid disk uevent
|
|
local MAJOR MINOR DEVNAME DEVTYPE
|
|
|
|
if read cmdline < /proc/cmdline; then
|
|
case "$cmdline" in
|
|
*block2mtd=*)
|
|
disk="${cmdline##*block2mtd=}"
|
|
disk="${disk%%,*}"
|
|
;;
|
|
*root=*)
|
|
disk="${cmdline##*root=}"
|
|
disk="${disk%% *}"
|
|
;;
|
|
esac
|
|
|
|
case "$disk" in
|
|
PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-02)
|
|
uuid="${disk#PARTUUID=}"
|
|
uuid="${uuid%-02}"
|
|
for disk in $(find /dev -type b); do
|
|
set -- $(dd if=$disk bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
|
|
if [ "$4$3$2$1" = "$uuid" ]; then
|
|
uevent="/sys/class/block/${disk##*/}/uevent"
|
|
break
|
|
fi
|
|
done
|
|
;;
|
|
/dev/*)
|
|
uevent="/sys/class/block/${disk##*/}/uevent"
|
|
;;
|
|
esac
|
|
|
|
if [ -e "$uevent" ]; then
|
|
. "$uevent"
|
|
|
|
export BOOTDEV_MAJOR=$MAJOR
|
|
export BOOTDEV_MINOR=$MINOR
|
|
return 0
|
|
fi
|
|
fi
|
|
|
|
return 1
|
|
}
|
|
|
|
export_partdevice() {
|
|
local var="$1" offset="$2"
|
|
local uevent MAJOR MINOR DEVNAME DEVTYPE
|
|
|
|
for uevent in /sys/class/block/*/uevent; do
|
|
. "$uevent"
|
|
if [ $BOOTDEV_MAJOR = $MAJOR -a $(($BOOTDEV_MINOR + $offset)) = $MINOR -a -b "/dev/$DEVNAME" ]; then
|
|
export "$var=$DEVNAME"
|
|
return 0
|
|
fi
|
|
done
|
|
|
|
return 1
|
|
}
|
|
|
|
get_partitions() { # <device> <filename>
|
|
local disk="$1"
|
|
local filename="$2"
|
|
|
|
if [ -b "$disk" -o -f "$disk" ]; then
|
|
v "Reading partition table from $filename..."
|
|
|
|
local magic="$(hexdump -v -n 2 -s 0x1FE -e '1/2 "0x%04X"' "$disk")"
|
|
if [ "$magic" != 0xAA55 ]; then
|
|
v "Invalid partition table on $disk"
|
|
exit
|
|
fi
|
|
|
|
rm -f "/tmp/partmap.$filename"
|
|
|
|
local part
|
|
for part in 1 2 3 4; do
|
|
set -- $(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
|
|
|
|
local type="$(($1 % 256))"
|
|
local lba="$(($2))"
|
|
local num="$(($3))"
|
|
|
|
[ $type -gt 0 ] || continue
|
|
|
|
printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
|
|
done
|
|
fi
|
|
}
|
|
|
|
jffs2_copy_config() {
|
|
if grep rootfs_data /proc/mtd >/dev/null; then
|
|
# squashfs+jffs2
|
|
mtd -e rootfs_data jffs2write "$CONF_TAR" rootfs_data
|
|
else
|
|
# jffs2
|
|
mtd jffs2write "$CONF_TAR" rootfs
|
|
fi
|
|
}
|
|
|
|
# Flash firmware to MTD partition
|
|
#
|
|
# $(1): path to image
|
|
# $(2): (optional) pipe command to extract firmware, e.g. dd bs=n skip=m
|
|
default_do_upgrade() {
|
|
sync
|
|
if [ "$SAVE_CONFIG" -eq 1 ]; then
|
|
get_image "$1" "$2" | mtd $MTD_CONFIG_ARGS -j "$CONF_TAR" write - "${PART_NAME:-image}"
|
|
else
|
|
get_image "$1" "$2" | mtd write - "${PART_NAME:-image}"
|
|
fi
|
|
}
|
|
|
|
do_upgrade() {
|
|
v "Performing system upgrade..."
|
|
if type 'platform_do_upgrade' >/dev/null 2>/dev/null; then
|
|
platform_do_upgrade "$ARGV"
|
|
else
|
|
default_do_upgrade "$ARGV"
|
|
fi
|
|
|
|
if [ "$SAVE_CONFIG" -eq 1 ] && type 'platform_copy_config' >/dev/null 2>/dev/null; then
|
|
platform_copy_config
|
|
fi
|
|
|
|
v "Upgrade completed"
|
|
[ -n "$DELAY" ] && sleep "$DELAY"
|
|
ask_bool 1 "Reboot" && {
|
|
v "Rebooting system..."
|
|
umount -a
|
|
reboot -f
|
|
sleep 5
|
|
echo b 2>/dev/null >/proc/sysrq-trigger
|
|
}
|
|
}
|