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