aboutsummaryrefslogtreecommitdiffstats
path: root/package/base-files/files/lib/functions/boot.sh
diff options
context:
space:
mode:
Diffstat (limited to 'package/base-files/files/lib/functions/boot.sh')
-rw-r--r--package/base-files/files/lib/functions/boot.sh95
1 files changed, 95 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions/boot.sh b/package/base-files/files/lib/functions/boot.sh
new file mode 100644
index 0000000000..46b4613300
--- /dev/null
+++ b/package/base-files/files/lib/functions/boot.sh
@@ -0,0 +1,95 @@
+#!/bin/sh
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2010 Vertical Communications
+
+boot_hook_add() {
+ local hook="${1}_hook"
+ local value="$2"
+ local sep=" "
+
+ eval "$hook=\"\${$hook:+\${$hook}\${value:+\$sep}}\$value\""
+}
+
+boot_run_hook() {
+ local boot_func
+ for boot_func in $(eval "echo \"\$${1}_hook\""); do
+ $boot_func "$1" "$2"
+ done
+}
+
+find_mtd_part() {
+ local PART="$(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)"
+ magic=$(hexdump $mtdpart -n 4 -e '4/1 "%02x"')
+ [ "$magic" != "deadc0de" ]
+}
+
+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
+ {
+ if 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
+ fi
+ } || {
+ [ "$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
+ mount -t tmpfs root /tmp/root
+ fopivot /tmp/root /rom 1
+}