#
# - watcher.bashlib -
#
# Private functions for the watcher startup process ...

# Conditions:
# - The RAMdisk must be mounted to $POOL (defined in system.conf)
# - All variables must be defined globally in watcher.conf
# - no need for locals here
#
# *** Bail out if _anything_ is missing/lacking! **
mkramdisk() {
local funtag="[${FUNCNAME[0]}]"
local	already

	already=$(mount | grep "^$RDNAME" )

	if [ -n "$already" ]
	then	echo "RAMdisk '$RDNAME' already mounted"
		return 1
	fi	

	# Safety check: No RAMDISK if not enabled
	if [ -z "$USE_RAMDISK" ]
	then	echo "RAMdisk-use not enabled"
		return 1
	fi

	if [ -z "$POOL" ]
	then	echo "$funtag ERROR: Mountpoint 'POOL' not specified"
		return 1
	fi

	# Check if size and pool are defined
	if [ -z "$RDSIZE" ]
	then	echo "$funtag ERROR: 'RDSIZE' not defined in watcher.conf!" >&2
		return 1
	fi

	# All conditions met - create and mount the beast ...
	if [ -e "$POOL" ]
	then	mount -t tmpfs -o size="$RDSIZE" "$RDNAME"  "$POOL"
		echo "Built ${RDSIZE^^} RAMdisk '$RDNAME' on mountpoint $POOL"
	fi

	# Check if the RAMdisk is mounted or flag failure
	already=$(mount | grep "^$RDNAME" )

	if [ -z "$already" ]
	then	echo "ERROR: Creating RAMdisk failed" >&2
		return 1
	else	
		# Output RAMDISK info to file (this step would be the last)
		cat > "$MASTER_PATH/RAMDISK" <<-EOF
		: RamDisk established $(date --iso=seconds)
		RAMDISK="'$RDNAME' on $POOL"
		RDSIZE=${RDSIZE^^}
		EOF
	fi	
}


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