diff options
author | Daniel Dickinson <daniel@cshore.neomailbox.net> | 2011-03-27 06:40:51 +0000 |
---|---|---|
committer | Daniel Dickinson <daniel@cshore.neomailbox.net> | 2011-03-27 06:40:51 +0000 |
commit | 012ea4a5a39c8d59c599e7753727950fa5f83809 (patch) | |
tree | d29172975565825b660caeecebf697d1404fac1e /package/block-mount/files/55_determine_extroot_sysupgrade | |
parent | 116c7cd9bea08f3b6695f7855e04eec2d6c34083 (diff) | |
download | upstream-012ea4a5a39c8d59c599e7753727950fa5f83809.tar.gz upstream-012ea4a5a39c8d59c599e7753727950fa5f83809.tar.bz2 upstream-012ea4a5a39c8d59c599e7753727950fa5f83809.zip |
[package] block-mount: Merged block-mount, block-extroot, and block-hotplug into a single binary package called block-mount.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26314 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/block-mount/files/55_determine_extroot_sysupgrade')
-rw-r--r-- | package/block-mount/files/55_determine_extroot_sysupgrade | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/package/block-mount/files/55_determine_extroot_sysupgrade b/package/block-mount/files/55_determine_extroot_sysupgrade new file mode 100644 index 0000000000..b0cd9036c2 --- /dev/null +++ b/package/block-mount/files/55_determine_extroot_sysupgrade @@ -0,0 +1,63 @@ +#!/bin/sh +# Copyright (C) 2010 Daniel Dickinson +# This is free software, licensed under the GNU General Public License v2. +# See /LICENSE for more information. + + +check_set_md5sum() { + local er_md5sum_file + er_md5sum_file="${ER_OVERLAY_PREFIX}/.extroot.md5sum" + local er_disabled + if [ "${ER_OVERLAY_ROM}" = "/rom" ]; then + er_disabled=/tmp/whole_root-disabled + else + er_disabled=/tmp${ER_OVERLAY_ROM}-disabled + fi + + local er_extroot_md5sum + if [ -f $md5sum_file ]; then + er_extroot_md5sum="$(cat $er_md5sum_file)" + fi + + local er_overlay_file="${ER_OVERLAY_ROM}/etc/extroot.md5sum" + + local er_extroot_overlay_md5sum + if [ -f "$er_overlay_file" ]; then + er_extroot_overlay_md5sum="$(cat $er_overlay_file)" + fi + + if [ -z "$er_extroot_overlay_md5sum" ]; then + cat $er_md5sum_file >$er_overlay_file + elif [ "$er_extroot_overlay_md5sum" != "$er_extroot_md5sum" ]; then + pi_extroot_mount_success="false" + mkdir -p $er_disabled + mount --move ${ER_OVERLAY_ROM} $er_disabled + fi +} + +set_jffs_md5sum() { + # We do this anytime block-extroot exists, even on the first boot with + # no extroot defined. + + local er_md5sum_file + er_md5sum_file="${ER_OVERLAY_PREFIX}/.extroot.md5sum" + + local er_extroot_md5sum + if [ -f $er_md5sum_file ]; then + er_extroot_md5sum="$(cat $er_md5sum_file)" + fi + if [ -z "$er_extroot_md5sum" ]; then + dd if=/dev/urandom count=32 bs=1k 2>/dev/null | md5sum | cut -f1 -d\ >$er_md5sum_file + fi +} + +determine_extroot_sysupgrade() { + check_skip || set_jffs_md5sum + + check_skip || [ "$pi_extroot_mount_success" != "true" ] || { + check_set_md5sum + } +} + +boot_hook_add preinit_mount_root determine_extroot_sysupgrade + |