block-mount: Merged block-mount, block-extroot, and block-hotplug into a single binar...

[openwrt/openwrt.git] / package / block-mount / files / extmount.sh

diff --git a/package/block-mount/files/extmount.sh b/package/block-mount/files/extmount.sh
new file mode 100644 (file)
index 0000000..44d662e
--- /dev/null
+++ b/package/block-mount/files/extmount.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+# Copyright 2010 Vertical Communications
+
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+
+determine_root_device() {
+       root_device="$(mount | grep ' / ' | cut -f1 -d\  | grep -v rootfs )"
+}
+
+set_jffs_mp() {
+       jffs="$(awk '/jffs2/ {print $2}' /proc/mounts)"
+}
+
+er_load_modules() {
+       mkdir -p /tmp/extroot_modules/modules.d
+       mkdir -p /tmp/extroot_modules/modules
+       ln -sf /etc/modules.d/* /tmp/overlay/etc/modules.d/* /tmp/extroot_modules/modules.d
+       ln -sf /lib/modules/*/* /tmp/overlay/lib/modules/*/* /tmp/extroot_modules/modules
+       local modules="$(grep -l '# May be required for rootfs' /tmp/extroot_modules/modules.d/* 2>/dev/null)"
+       cd /tmp/extroot_modules/modules && [ -n "$modules" ] && {
+               cat $modules | sed -e 's/^\([^#].*\)/insmod \.\/\1.ko/'| sh 2>&- || :
+       }
+       rm -rf /tmp/extroot_modules
+}
+
+pivot_rom() { # <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>&-
+               return 0
+       }
+}
+