Re: [PATCH v7 05/10] pkt-line: add packet_write_gently()

> +int packet_write_gently(const int fd_out, const char *buf, size_t size)
> +{
> +	static char packet_write_buffer[LARGE_PACKET_MAX];
> +
> +	if (size > sizeof(packet_write_buffer) - 4) {
> +		error("packet write failed");
> +		return -1;
> +	}
> +	packet_trace(buf, size, 1);
> +	size += 4;
> +	set_packet_header(packet_write_buffer, size);
> +	memcpy(packet_write_buffer + 4, buf, size - 4);
> +	if (write_in_full(fd_out, packet_write_buffer, size) == size)
> +		return 0;
> +
> +	error("packet write failed");
> +	return -1;
> +}