Function compute_mfc_all

plugins/spender/multifundchannel.c:1271–1321

If one of the destinations specified "all", figure out how much that is. */

/* If one of the destinations specified "all", figure out how much that is.  */
static struct command_result *
compute_mfc_all(struct multifundchannel_command *mfc)
{
	size_t all_index = SIZE_MAX;
	struct multifundchannel_destination *all_dest;

	assert(has_all(mfc));

	for (size_t i = 0; i < tal_count(mfc->destinations); ++i) {
		struct multifundchannel_destination *dest;
		dest = &mfc->destinations[i];
		if (dest->all) {
			assert(all_index == SIZE_MAX);
			all_index = i;
			continue;
		}
		/* Subtract the amount from the excess.  */
		if (!amount_sat_sub(&mfc->excess_sat,
				    mfc->excess_sat, dest->amount))
			/* Not enough funds!  */
			return mfc_fail(mfc, FUND_CANNOT_AFFORD,
					"Insufficient funds.");
	}
	assert(all_index != SIZE_MAX);
	all_dest = &mfc->destinations[all_index];

	/* Is the excess above the dust amount?  */
	if (amount_sat_less(mfc->excess_sat, chainparams->dust_limit))
		return mfc_fail(mfc, FUND_OUTPUT_IS_DUST,
				"Output 'all' %s would be dust",
				type_to_string(tmpctx, struct amount_sat,
					       &mfc->excess_sat));

	/* Assign the remainder to the 'all' output.  */
	all_dest->amount = mfc->excess_sat;
	if (!feature_negotiated(plugin_feature_set(mfc->cmd->plugin),
				all_dest->their_features,
				OPT_LARGE_CHANNELS)
	 && amount_sat_greater(all_dest->amount,
			       chainparams->max_funding))
		all_dest->amount = chainparams->max_funding;
	/* Remove it from the excess.  */
	bool ok = amount_sat_sub(&mfc->excess_sat,
				 mfc->excess_sat, all_dest->amount);
	assert(ok);
	/* Remove the 'all' flag.  */
	all_dest->all = false;

	/* Continue.  */
	return handle_mfc_change(mfc);
}

static struct command_result *
after_fundpsbt(struct command *cmd,