DennisLfromGA/flex.grub

## flex.grub
##########################################################################
### THIS SCRIPT NO LONGER WORKS DUE TO RECENT CHANGES IN CHROMEOS Flex ###
##########################################################################

### Script to add cros_debug / dev mode option in grub.cfg
### ( Each Flex update removes cros_debug / dev mode option
###   Be sure to run this script AFTER each update and BEFORE rebooting )

ANS=
ROOTDEVICE=
ROOTDEVICEPREFIX=
P12MOUNTPOINT=/var/p12
GRUBCFGPATH=$P12MOUNTPOINT/efi/boot
GRUBCFGFILE=grub.cfg

# Exits the script with return code $1, spitting out message $@ to stderr
error() {
    local ecode="$1"
    shift
    echo "$*" 1>&2
    return "$ecode"
}

# Find the root device
# Sets:
#  - $ROOTDEVICE as the root device (e.g. /dev/sda or /dev/mmcblk0)
#  - $ROOTDEVICEPREFIX as a prefix for partitions (/dev/sda, /dev/mmcblk0p)
findrootdevice() {
    ROOTDEVICE="`rootdev -d -s`"

    if [ -z "$ROOTDEVICE" ]; then
        error 1 "Cannot find root device."
    fi

    if [ ! -b "$ROOTDEVICE" ]; then
        error 1 "$ROOTDEVICE is not a block device."
    fi

    # If $ROOTDEVICE ends with a number (e.g. mmcblk0), partitions are named
    # ${ROOTDEVICE}pX (e.g. mmcblk0p1). If not (e.g. sda), they are named
    # ${ROOTDEVICE}X (e.g. sda1).
    ROOTDEVICEPREFIX="$ROOTDEVICE"
    if [ "${ROOTDEVICE%[0-9]}" != "$ROOTDEVICE" ]; then
        ROOTDEVICEPREFIX="${ROOTDEVICE}p"
    fi
}

findrootdevice

if [ ! -d $P12MOUNTPOINT ]; then
# Make mountpoint
  echo "Making directory to mount partition 12"
  sudo mkdir -p $P12MOUNTPOINT
elif [ ! -d $GRUBCFGPATH ]; then
# Mount EFI partition
  echo "Mounting ${ROOTDEVICEPREFIX}12 on $P12MOUNTPOINT"
  sudo mount ${ROOTDEVICEPREFIX}12 $P12MOUNTPOINT
fi

# Check for cros_debug option, need 5
DEBUGCOUNT="$(grep 'cros_efi cros_debug' $GRUBCFGPATH/$GRUBCFGFILE | wc -l)"
if [ "$DEBUGCOUNT" -eq 5 ]; then
  echo "cros_debug has been added to $GRUBCFGFILE, no changes needed."
  exit
fi

# grub.cfg needs editing
echo "Editing $GRUBCFGFILE to add 'cros_debug' option."
echo "
PLEASE NOTE:
I claim no responsibility for any damage or harm that may occur to your
device as a result of running this script. PROCEED AT YOR OWN RISK.
"
echo -n "[ press ENTER to continue - Ctrl-C to abort ] "; read ANS
cp $GRUBCFGPATH/$GRUBCFGFILE /tmp
# vi /tmp/$GRUBCFGFILE
sed -e 's/cros_efi  /cros_efi cros_debug /' -e 's/cros_efi root/cros_efi cros_debug root/' /tmp/$GRUBCFGFILE
sudo cp $GRUBCFGPATH/$GRUBCFGFILE $GRUBCFGPATH/${GRUBCFGFILE}.bak
sudo cp /tmp/$GRUBCFGFILE $GRUBCFGPATH/
echo "Done, you can reboot now."

exit
	##########################################################################
	### THIS SCRIPT NO LONGER WORKS DUE TO RECENT CHANGES IN CHROMEOS Flex ###
	##########################################################################

	### Script to add cros_debug / dev mode option in grub.cfg
	### ( Each Flex update removes cros_debug / dev mode option
	### Be sure to run this script AFTER each update and BEFORE rebooting )

	ANS=
	ROOTDEVICE=
	ROOTDEVICEPREFIX=
	P12MOUNTPOINT=/var/p12
	GRUBCFGPATH=$P12MOUNTPOINT/efi/boot
	GRUBCFGFILE=grub.cfg

	# Exits the script with return code $1, spitting out message $@ to stderr
	error() {
	local ecode="$1"
	shift
	echo "$*" 1>&2
	return "$ecode"
	}

	# Find the root device
	# Sets:
	# - $ROOTDEVICE as the root device (e.g. /dev/sda or /dev/mmcblk0)
	# - $ROOTDEVICEPREFIX as a prefix for partitions (/dev/sda, /dev/mmcblk0p)
	findrootdevice() {
	ROOTDEVICE="`rootdev -d -s`"

	if [ -z "$ROOTDEVICE" ]; then
	error 1 "Cannot find root device."
	fi

	if [ ! -b "$ROOTDEVICE" ]; then
	error 1 "$ROOTDEVICE is not a block device."
	fi

	# If $ROOTDEVICE ends with a number (e.g. mmcblk0), partitions are named
	# ${ROOTDEVICE}pX (e.g. mmcblk0p1). If not (e.g. sda), they are named
	# ${ROOTDEVICE}X (e.g. sda1).
	ROOTDEVICEPREFIX="$ROOTDEVICE"
	if [ "${ROOTDEVICE%[0-9]}" != "$ROOTDEVICE" ]; then
	ROOTDEVICEPREFIX="${ROOTDEVICE}p"
	fi
	}

	findrootdevice

	if [ ! -d $P12MOUNTPOINT ]; then
	# Make mountpoint
	echo "Making directory to mount partition 12"
	sudo mkdir -p $P12MOUNTPOINT
	elif [ ! -d $GRUBCFGPATH ]; then
	# Mount EFI partition
	echo "Mounting ${ROOTDEVICEPREFIX}12 on $P12MOUNTPOINT"
	sudo mount ${ROOTDEVICEPREFIX}12 $P12MOUNTPOINT
	fi

	# Check for cros_debug option, need 5
	DEBUGCOUNT="$(grep 'cros_efi cros_debug' $GRUBCFGPATH/$GRUBCFGFILE \| wc -l)"
	if [ "$DEBUGCOUNT" -eq 5 ]; then
	echo "cros_debug has been added to $GRUBCFGFILE, no changes needed."
	exit
	fi

	# grub.cfg needs editing
	echo "Editing $GRUBCFGFILE to add 'cros_debug' option."
	echo "
	PLEASE NOTE:
	I claim no responsibility for any damage or harm that may occur to your
	device as a result of running this script. PROCEED AT YOR OWN RISK.
	"
	echo -n "[ press ENTER to continue - Ctrl-C to abort ] "; read ANS
	cp $GRUBCFGPATH/$GRUBCFGFILE /tmp
	# vi /tmp/$GRUBCFGFILE
	sed -e 's/cros_efi /cros_efi cros_debug /' -e 's/cros_efi root/cros_efi cros_debug root/' /tmp/$GRUBCFGFILE
	sudo cp $GRUBCFGPATH/$GRUBCFGFILE $GRUBCFGPATH/${GRUBCFGFILE}.bak
	sudo cp /tmp/$GRUBCFGFILE $GRUBCFGPATH/
	echo "Done, you can reboot now."

	exit
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