rockbox/rbutil/mknwzboot/install_script.sh
Amaury Pouly 7de1d8b70f mknwzboot: add support for uninstallation
There is not need for a bootloader file to create an uninstall firmware so one
needs to provide a model.
Also cleanup the install script a bit by factoring message into a function, also
print them to the log so that the user can report what was printed on the screen
easily. The uninstall script is quite trivial, it remounts the rootfs and restores
the backed up OF to its right place.

Change-Id: I1f5c0efeb965fdc7fe17f45c2753c0f52c34f7f1
2017-09-17 22:16:50 +02:00

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#!/bin/sh
# NOTE: busybox is using ash, a very posix and very pedantic shell, make sure
# you test your scripts with
# busybox sh -n <script>
# and if you really, really don't want to download busybox to try it, then go
# ahead and brick your device
# The updater script on the NWZ has a major bug/feature:
# it does NOT clear the update flag if the update scrit fails
# thus causing a update/reboot loop and a bricked device
# always clear to make sure we don't end up being screwed
nvpflag fup 0xFFFFFFFF
# go to /tmp
cd /tmp
# get content partition path
CONTENTS="/contents"
CONTENTS_PART=`mount | grep contents | awk '{ print $1 }'`
# print a message to the screen and also on the standard output
# lcdprint x,y msg
lcdprint ()
{
echo $2
lcdmsg -f /usr/local/bin/font_08x12.bmp -l $1 "$2"
}
# clear screen
lcdmsg -c ""
lcdprint 0,3 "Contents partition:\n$CONTENTS_PART"
# We need to remount the contents partition in read-write mode be able to
# write something on it
lcdprint 0,6 "Remount $CONTENTS rw"
mount -o remount,rw $CONTENTS_PART $CONTENTS
if [ "$?" != 0 ]; then
lcdprint 0,15 "ERROR: remount failed"
sleep 3
exit 0
fi
# redirect all output to a log file
exec > "$CONTENTS/install_dualboot_log.txt" 2>&1
# import constants
. /install_script/constant.txt
_UPDATE_FN_=`nvpstr ufn`
ROOTFS_TMP_DIR=/tmp/rootfs
SPIDERAPP_PATH=$ROOTFS_TMP_DIR/usr/local/bin/SpiderApp
# mount root partition
lcdprint 0,7 "Mount root filesystem"
mkdir $ROOTFS_TMP_DIR
if [ "$?" != 0 ]; then
lcdprint 0,15 "ERROR: mkdir failed"
sleep 3
exit 0
fi
# If there is an ext4 mounter, try it. Otherwise or on failure, try ext3 and
# then ext2.
# NOTE some platforms probably use an mtd and this might need some fixing
if [ -e /usr/local/bin/icx_mount.ext4 ]; then
/usr/local/bin/icx_mount.ext4 $COMMON_ROOTFS_PARTITION $ROOTFS_TMP_DIR
else
false
fi
if [ "$?" != 0 ]; then
mount -t ext3 $COMMON_ROOTFS_PARTITION $ROOTFS_TMP_DIR
fi
if [ "$?" != 0 ]; then
mount -t ext2 $COMMON_ROOTFS_PARTITION $ROOTFS_TMP_DIR
fi
if [ "$?" != 0 ]; then
lcdprint 0,15 "ERROR: mount failed"
sleep 3
exit 0
fi
# rename the previous main application unless there is already a copy
lcdprint 0,8 "Backup OF"
if [ ! -e $SPIDERAPP_PATH.of ]; then
mv $SPIDERAPP_PATH $SPIDERAPP_PATH.of
fi
# extract our payload: the second file in the upgrade is a tar file
# the files in the archive have paths of the form ./absolute/path and we extract
# it at the rootfs mount it, so it can create/overwrite any file
#
# we need a small trick here: we want to pipe directly the output of the decryption
# tool to tar, to avoid using space in /tmp/ or on the user partition
lcdprint 0,9 "Install rockbox"
FIFO_FILE=/tmp/rb.fifo
mkfifo $FIFO_FILE
if [ "$?" != 0 ]; then
umount "$ROOTFS_TMP_DIR"
lcdprint 0,15 "ERROR: cannot create fifo"
sleep 3
exit 0
fi
fwpchk -f /contents/$_UPDATE_FN_.UPG -c -1 $FIFO_FILE &
#tar -tvf $FIFO_FILE
tar -C $ROOTFS_TMP_DIR -xvf $FIFO_FILE
if [ "$?" != 0 ]; then
umount "$ROOTFS_TMP_DIR"
lcdprint 0,15 "ERROR: extraction failed"
sleep 3
exit 0
fi
# wait for fwpchk
wait
if [ "$?" != 0 ]; then
umount "$ROOTFS_TMP_DIR"
lcdprint 0,15 "ERROR: no file to extract"
sleep 3
exit 0
fi
# create a symlink from /.rockbox to /contents/.rockbox (see dualboot code
# for why)
lcdprint 0,10 "Create rockbox symlink"
rm -f "$ROOTFS_TMP_DIR/.rockbox"
ln -s "$CONTENTS/.rockbox" "$ROOTFS_TMP_DIR/.rockbox"
if [ "$?" != 0 ]; then
umount "$ROOTFS_TMP_DIR"
lcdprint 0,15 "ERROR: cannot create rockbox symlink"
sleep 3
exit 0
fi
# unmount root partition
lcdprint 0,11 "Unmount root filesystem"
sync
if [ "$?" != 0 ]; then
umount "$ROOTFS_TMP_DIR"
lcdprint 0,15 "ERROR: sync failed"
sleep 3
exit 0
fi
umount $ROOTFS_TMP_DIR
if [ "$?" != 0 ]; then
lcdprint 0,15 "ERROR: umount failed"
sleep 3
exit 0
fi
# Success screen
lcdprint 0,15 "Rebooting in 3 seconds."
sleep 3
sync
echo "Installation successful"
# finish
exit 0