find_mtd_part() {
local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
local PREFIX=/dev/mtdblock
-
+
PART="${PART##mtd}"
[ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
echo "${PART:+$PREFIX$PART}"
}
jffs2_ready () {
- mtdpart="$(find_mtd_part rootfs_data)"
- [ -z "$mtdpart" ] && return 1
- magic=$(hexdump $mtdpart -n 4 -e '4/1 "%02x"')
- [ "$magic" != "deadc0de" ]
+ mtdpart="$(find_mtd_part rootfs_data)"
+ [ -z "$mtdpart" ] && return 1
+ magic=$(hexdump $mtdpart -n 4 -e '4/1 "%02x"')
+ [ "$magic" != "deadc0de" ]
}
dupe() { # <new_root> <old_root>
cd $1
echo -n "creating directories... "
{
- cd $2
+ cd $2
find . -xdev -type d
echo "./dev ./overlay ./mnt ./proc ./tmp"
# xdev skips mounted directories
- cd $1
+ cd $1
} | xargs mkdir -p
echo "done"
fopivot() { # <rw_root> <ro_root> <dupe?>
root=$1
{
- if grep -q mini_fo /proc/filesystems; then
+ if grep -q overlay /proc/filesystems; then
+ mount -t overlayfs -olowerdir=/,upperdir=$1 "overlayfs:$1" /mnt && root=/mnt
+ elif grep -q mini_fo /proc/filesystems; then
mount -t mini_fo -o base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
else
mount --bind / /mnt
- mount --bind -o union "$1" /mnt && root=/mnt
+ mount --bind -o union "$1" /mnt && root=/mnt
fi
} || {
[ "$3" = "1" ] && {