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|
#! /bin/sh
#
# umountfs Turn off swap and unmount all local filesystems.
#
PATH=/sbin:/bin:/usr/sbin:/usr/bin
umount_all() {
echo "Deactivating swap..."
swapoff -a
# We leave /proc mounted.
echo "Unmounting local filesystems..."
mount -o remount,ro /mnt/ram
umount -f -a -r
mount -o remount,ro /
}
flash_upgrade() {
if [ $# -ne 1 ]; then
echo "need to specify flash-root"
return
fi
# flash_root must be a mountpoint that is not the rootfs and be mounted rw
local flash_root=${1}
local flash_dir=${flash_root}/flash-upgrade
local uImage_file=${flash_dir}/uImage.bin
local rootfs_file=${flash_dir}/rootfs.jffs2
local reboot_cmd=/usr/sbin/upgrade-reboot
local nandwrite_cmd=/usr/bin/nandwrite.static
local mode=
local uImage_mtd=
local rootfs_mtd=
if [ ! -d "${flash_dir}" ]; then
echo "${flash_dir} not present, skipping"
return
fi
if ! mountpoint -q "${flash_root}"; then
echo "${flash_root} is not a mountpoint"
return
fi
mode=$(grep "${flash_root}" /proc/mounts | cut -d ' ' -f 4 | cut -d ',' -f 1)
if [ "${mode}" != "rw" ]; then
echo "${flash_root} is not mounted rw"
return
fi
if [ ! -x "${reboot_cmd}" ]; then
echo "${reboot_cmd} is not installed"
return
fi
if [ ! -x "${nandwrite_cmd}" ]; then
echo "${nandwrite_cmd} is not installed"
return
fi
uImage_mtd="/dev/$(cat /proc/mtd | grep uImage | cut -d : -f 1)"
if [ ! -c "${uImage_mtd}" ]; then
echo "No valid MTD partition is labeled uImage"
return
fi
rootfs_mtd="/dev/$(cat /proc/mtd | grep Rootfs | cut -d : -f 1)"
if [ ! -c "${rootfs_mtd}" ]; then
echo "No valid MTD partition is labeled Rootfs"
return
fi
echo ""
echo "Starting flash upgrade from ${flash_dir}..."
if [ -f ${uImage_file} ]; then
echo "Flashing ${uImage_mtd} (uImage) with ${uImage_file}..."
flash_eraseall ${uImage_mtd}
nandwrite -p ${uImage_mtd} ${uImage_file}
else
echo "uImage file ${uImage_file} not found"
fi
if [ -f ${rootfs_file} ]; then
echo "Flashing ${rootfs_mtd} (rootfs) with ${rootfs_file}..."
cp ${reboot_cmd} ${flash_dir}/upgrade-reboot
cp ${nandwrite_cmd} ${flash_dir}/nandwrite.static
sync
sleep 2
mount -o remount,ro ${flash_root}
# flash_root is not going to be umounted
sed -i -e "\\|${flash_root}| d" /etc/mtab
umount_all
flash_eraseall -j ${rootfs_mtd}
${flash_dir}/nandwrite.static -p ${rootfs_mtd} ${rootfs_file}
echo "Rebooting..."
${flash_dir}/upgrade-reboot
# Should not get here normally
echo "upgrade-reboot failed"
exit 1
else
echo "rootfs file ${rootfs_file} not found"
fi
}
# do flash on reboot if do_flash_upgrade exists
if [ -f /var/volatile/do_flash_upgrade ]; then
flash_upgrade /var/volatile
flash_upgrade /media/card
fi
umount_all
: exit 0
|
