2 # Copyright (C) 2006-2010 OpenWrt.org
3 # Copyright (C) 2010 Vertical Communications
5 boot_hook_splice_start() {
6 export -n PI_HOOK_SPLICE=1
9 boot_hook_splice_finish() {
11 for hook in $PI_STACK_LIST; do
12 local v; eval "v=\${${hook}_splice:+\$${hook}_splice }$hook"
13 export -n "${hook}=${v% }"
14 export -n "${hook}_splice="
16 export -n PI_HOOK_SPLICE=
20 local hook="${1}_hook"
21 export -n "PI_STACK_LIST=${PI_STACK_LIST:+$PI_STACK_LIST }$hook"
26 local hook="${1}_hook${PI_HOOK_SPLICE:+_splice}"
30 local v; eval "v=\$$hook"
31 export -n "$hook=${v:+$v }$func"
36 local hook="${1}_hook"
39 local v; eval "v=\$$hook"
41 local first="${v%% *}"
43 [ "$v" != "${v#* }" ] && \
44 export -n "$hook=${v#* }" || \
47 export -n "$rvar=$first"
58 while boot_hook_shift "$hook" func; do
59 local ran; eval "ran=\$PI_RAN_$func"
61 export -n "PI_RAN_$func=1"
68 local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
69 local PREFIX=/dev/mtdblock
72 [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
73 echo "${PART:+$PREFIX$PART}"
77 mtdpart="$(find_mtd_part rootfs_data)"
78 [ -z "$mtdpart" ] && return 1
79 magic=$(hexdump $mtdpart -n 4 -e '4/1 "%02x"')
80 [ "$magic" != "deadc0de" ]
83 dupe() { # <new_root> <old_root>
85 echo -n "creating directories... "
89 echo "./dev ./overlay ./mnt ./proc ./tmp"
90 # xdev skips mounted directories
95 echo -n "setting up symlinks... "
96 for file in $(cd $2; find . -xdev -type f;); do
98 ./rom/note) ;; #nothing
100 ./usr/lib/opkg/info/*) cp -af $2/$file $file;;
101 *) ln -sf /rom/${file#./*} $file;;
104 for file in $(cd $2; find . -xdev -type l;); do
105 cp -af $2/${file#./*} $file
110 pivot() { # <new_root> <old_root>
111 mount -o noatime,move /proc $1/proc && \
112 pivot_root $1 $1$2 && {
113 mount -o noatime,move $2/dev /dev
114 mount -o noatime,move $2/tmp /tmp
115 mount -o noatime,move $2/sys /sys 2>&-
116 mount -o noatime,move $2/overlay /overlay 2>&-
121 fopivot() { # <rw_root> <ro_root> <dupe?>
124 if grep -q overlay /proc/filesystems; then
125 mount -o noatime,lowerdir=/,upperdir=$1 -t overlayfs "overlayfs:$1" /mnt && root=/mnt
126 elif grep -q mini_fo /proc/filesystems; then
127 mount -t mini_fo -o noatime,base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
129 mount --bind -o noatime / /mnt
130 mount --bind -o noatime,union "$1" /mnt && root=/mnt
134 mount | grep "on $1 type" 2>&- 1>&- || mount -o noatime,bind $1 $1
143 mount -t tmpfs -o noatime,mode=0755 root /tmp/root
144 fopivot /tmp/root /rom 1