c3d9a64b87f05b7c49a8632d0895b679976f7e3a
[openwrt/openwrt.git] / package / base-files / brcm / bin / firstboot
1 #!/bin/sh
2 # $Id$
3 . /etc/functions.sh
4
5 partname="OpenWrt"
6 mtdpart="$(find_mtd_part $partname)"
7
8 rom=$(awk '/squashfs/ {print $2}' /proc/mounts)
9 jffs=$(awk '/jffs2/ {print $2}' /proc/mounts)
10
11 dupe() { # <new_root> <old_root>
12 cd $1
13 echo -n "creating directories... "
14 {
15 cd $2
16 find . -xdev -type d
17 echo "./dev ./jffs ./mnt ./proc ./tmp"
18 # xdev skips mounted directories
19 cd $1
20 } | xargs mkdir -p
21 echo "done"
22
23 echo -n "setting up symlinks... "
24 for file in $(cd $2; find . -xdev -type f;); do
25 case "$file" in
26 ./rom/note) ;; #nothing
27 ./etc/config*|\
28 ./usr/lib/ipkg/info/*) cp -af $2/$file $file;;
29 *) ln -sf /rom/${file#./*} $file;;
30 esac
31 done
32 for file in $(cd $2; find . -xdev -type l;); do
33 cp -af $2/${file#./*} $file
34 done
35 echo "done"
36 }
37
38 pivot() { # <new_root> <old_root>
39 mount -o move /proc $1/proc && \
40 pivot_root $1 $1$2 && {
41 mount -o move $2/dev /dev
42 mount -o move $2/tmp /tmp
43 mount -o move $2/jffs /jffs 2>&-
44 return 0
45 }
46 }
47
48 fopivot() { # <rw_root> <ro_root> <dupe?>
49 root=$1
50 {
51 mount -t mini_fo -o base=/,sto=$1 $1 /mnt 2>&- && root=/mnt
52 } || {
53 [ "$3" = "1" ] && {
54 mount | grep "on $1 type" 2>&- 1>&- || mount -o bind $1 $1
55 dupe $1 $rom
56 }
57 }
58 pivot $root $2
59 }
60
61 ramoverlay() {
62 mkdir -p /tmp/root
63 fopivot /tmp/root /rom 1
64 }
65
66 # invoked as an executable
67 [ "${0##*/}" = "firstboot" ] && {
68
69 [ -z "$mtdpart" ] && {
70 echo "MTD partition not found."
71 exit 1
72 }
73
74 [ -z "$rom" ] && {
75 echo "You do not have a squashfs partition; aborting"
76 echo "(firstboot cannot be run on jffs2 based firmwares)"
77 exit 1
78 }
79
80 [ "$1" = "switch2jffs" ] && {
81 mtd erase "$partname"
82
83 # try to avoid fs changing while copying
84 mount -o remount,ro none / 2>&-
85
86 # copy ramoverlay to jffs2
87 mount "$mtdpart" /rom/jffs -t jffs2
88 echo -n "copying files ... "
89 cp -a /tmp/root/* /rom/jffs 2>&-
90 echo "done"
91
92 # switch back to squashfs (temporarily)
93 # and park the ramdisk ontop of /tmp/root
94 pivot /rom /mnt
95 mount -o move /mnt /tmp/root
96
97 # /jffs is the overlay
98 # /rom is the readonly
99 fopivot /jffs /rom
100
101 # try to get rid of /tmp/root
102 # this will almost always fail
103 umount /tmp/root 2>&-
104
105 # fs is clean
106 jffs2root --clean
107 exit 0
108 }
109
110 # script run manually
111 [ \! -z "$jffs" ] && {
112 echo "firstboot has already been run"
113 echo "jffs2 partition is mounted, only resetting files"
114 grep mini_fo /proc/filesystems >&-
115 [ $? != 0 ] && {
116 dupe $jffs $rom
117 exit 0
118 } || {
119 rm -rf $jffs/* 2>&-
120 mount -o remount $jffs / 2>&-
121 exit 0
122 }
123 }
124
125 mtd erase "$partname"
126 mount "$mtdpart" /jffs -t jffs2
127 fopivot /jffs /rom 1
128 }