Function wait_and_check_bitcoind

plugins/bcli.c:862–922

}

static void wait_and_check_bitcoind(struct plugin *p)
{
	int in, from, status, ret;
	pid_t child;
	const char **cmd = gather_args(bitcoind, "getnetworkinfo", NULL);
	bool printed = false;
	char *output = NULL;

	for (;;) {
		tal_free(output);

		child = pipecmdarr(&in, &from, &from, cast_const2(char **, cmd));

		if (bitcoind->rpcpass)
			write_all(in, bitcoind->rpcpass, strlen(bitcoind->rpcpass));

		close(in);

		if (child < 0) {
			if (errno == ENOENT)
				bitcoind_failure(p, "bitcoin-cli not found. Is bitcoin-cli "
						    "(part of Bitcoin Core) available in your PATH?");
			plugin_err(p, "%s exec failed: %s", cmd[0], strerror(errno));
		}

		output = grab_fd(cmd, from);

		while ((ret = waitpid(child, &status, 0)) < 0 && errno == EINTR);
		if (ret != child)
			bitcoind_failure(p, tal_fmt(bitcoind, "Waiting for %s: %s",
						    cmd[0], strerror(errno)));
		if (!WIFEXITED(status))
			bitcoind_failure(p, tal_fmt(bitcoind, "Death of %s: signal %i",
						   cmd[0], WTERMSIG(status)));

		if (WEXITSTATUS(status) == 0)
			break;

		/* bitcoin/src/rpc/protocol.h:
		 *	RPC_IN_WARMUP = -28, //!< Client still warming up
		 */
		if (WEXITSTATUS(status) != 28) {
			if (WEXITSTATUS(status) == 1)
				bitcoind_failure(p, "Could not connect to bitcoind using"
						    " bitcoin-cli. Is bitcoind running?");
			bitcoind_failure(p, tal_fmt(bitcoind, "%s exited with code %i: %s",
						    cmd[0], WEXITSTATUS(status), output));
		}

		if (!printed) {
			plugin_log(p, LOG_UNUSUAL,
				   "Waiting for bitcoind to warm up...");
			printed = true;
		}
		sleep(1);
	}

	parse_getnetworkinfo_result(p, output);