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-rwxr-xr-xpackage/base-files/files/sbin/firstboot125
1 files changed, 125 insertions, 0 deletions
diff --git a/package/base-files/files/sbin/firstboot b/package/base-files/files/sbin/firstboot
new file mode 100755
index 0000000000..8453b30096
--- /dev/null
+++ b/package/base-files/files/sbin/firstboot
@@ -0,0 +1,125 @@
+#!/bin/sh
+. /etc/functions.sh
+
+partname="rootfs_data"
+mtdpart="$(find_mtd_part $partname)"
+
+rom=$(awk '/squashfs/ {print $2}' /proc/mounts)
+jffs=$(awk '/jffs2/ {print $2}' /proc/mounts)
+
+dupe() { # <new_root> <old_root>
+ cd $1
+ echo -n "creating directories... "
+ {
+ cd $2
+ find . -xdev -type d
+ echo "./dev ./jffs ./mnt ./proc ./tmp"
+ # xdev skips mounted directories
+ cd $1
+ } | xargs mkdir -p
+ echo "done"
+
+ echo -n "setting up symlinks... "
+ for file in $(cd $2; find . -xdev -type f;); do
+ case "$file" in
+ ./rom/note) ;; #nothing
+ ./etc/config*|\
+ ./usr/lib/opkg/info/*) cp -af $2/$file $file;;
+ *) ln -sf /rom/${file#./*} $file;;
+ esac
+ done
+ for file in $(cd $2; find . -xdev -type l;); do
+ cp -af $2/${file#./*} $file
+ done
+ echo "done"
+}
+
+pivot() { # <new_root> <old_root>
+ mount -o move /proc $1/proc && \
+ pivot_root $1 $1$2 && {
+ mount -o move $2/dev /dev
+ mount -o move $2/tmp /tmp
+ mount -o move $2/sys /sys 2>&-
+ mount -o move $2/jffs /jffs 2>&-
+ return 0
+ }
+}
+
+fopivot() { # <rw_root> <ro_root> <dupe?>
+ root=$1
+ {
+ mount -t mini_fo -o base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
+ } || {
+ [ "$3" = "1" ] && {
+ mount | grep "on $1 type" 2>&- 1>&- || mount -o bind $1 $1
+ dupe $1 $rom
+ }
+ }
+ pivot $root $2
+}
+
+ramoverlay() {
+ mkdir -p /tmp/root
+ fopivot /tmp/root /rom 1
+}
+
+# invoked as an executable
+[ "${0##*/}" = "firstboot" ] && {
+
+ [ -z "$mtdpart" ] && {
+ echo "MTD partition not found."
+ exit 1
+ }
+
+ [ -z "$rom" ] && {
+ echo "You do not have a squashfs partition; aborting"
+ echo "(firstboot cannot be run on jffs2 based firmwares)"
+ exit 1
+ }
+
+ [ "$1" = "switch2jffs" ] && {
+ mount "$mtdpart" /rom/jffs -t jffs2 || exit
+
+ # try to avoid fs changing while copying
+ mount -o remount,ro none / 2>&-
+
+ # copy ramoverlay to jffs2
+ echo -n "copying files ... "
+ cp -a /tmp/root/* /rom/jffs 2>&-
+ echo "done"
+
+ # switch back to squashfs (temporarily)
+ # and park the ramdisk ontop of /tmp/root
+ pivot /rom /mnt
+ mount -o move /mnt /tmp/root
+
+ # /jffs is the overlay
+ # /rom is the readonly
+ fopivot /jffs /rom
+
+ # try to get rid of /tmp/root
+ # this will almost always fail
+ umount /tmp/root 2>&-
+
+ exit 0
+ }
+
+ # script run manually
+ [ \! -z "$jffs" ] && {
+ echo "firstboot has already been run"
+ echo "jffs2 partition is mounted, only resetting files"
+ grep mini_fo /proc/filesystems >&-
+ [ $? != 0 ] && {
+ dupe $jffs $rom
+ exit 0
+ } || {
+ rm -rf $jffs/* 2>&-
+ mount -o remount $jffs / 2>&-
+ exit 0
+ }
+ }
+
+ mtd erase "$partname"
+ mount "$mtdpart" /jffs -t jffs2
+ fopivot /jffs /rom 1
+}