fs_make_btrfs() {
	local device="${1}"
	local label="${2}"
	local uuid="${3}"
	if [ -b "${device}" ]; then
		set -- \
			--force \
			--checksum "sha256"
		if [ -n "${label}" ]; then
			set -- "${@}" \
				--label "${label}"
		fi
		if [ -n "${uuid}" ]; then
			set -- "${@}" \
				--uuid "${uuid}"
		fi
		mkfs.btrfs "${@}" "${device}"
	fi
}

fs_make_fat() {
	local device="${1}"
	local name="${2}"
	local volid="${3}"
	if [ -b "${device}" ]; then
		set -- \
			-F 32 \
			-S 4096
		if [ -n "${name}" ]; then
			set -- "${@}" \
				-n "${name}"
		fi
		if [ -n "${volid}" ]; then
			set -- "${@}" \
				-i "${volid}"
		fi
		mkfs.fat "${@}" "${device}"
	fi
}

fs_wipe() {
	local device="${1}"
	local buffer="${2}"
	local count="${3}"
	if [ -b "${device}" ]; then
		set -- \
			status="progress" \
			if="/dev/zero" \
			of="${device}"
		if [ -n "${buffer}" ]; then
			set -- "${@}" \
				bs="${buffer}"
		fi
		if [ -n "${count}" ]; then
			set -- "${@}" \
				count=${count}
		fi
		dd "${@}"
	fi
}