Function do_packet_write

pkt-line.c:202–231

}

static int do_packet_write(const int fd_out, const char *buf, size_t size,
			   struct strbuf *err)
{
	char header[4];
	size_t packet_size;

	if (size > LARGE_PACKET_DATA_MAX) {
		strbuf_addstr(err, _("packet write failed - data exceeds max packet size"));
		return -1;
	}

	packet_trace(buf, size, 1);
	packet_size = size + 4;

	set_packet_header(header, packet_size);

	/*
	 * Write the header and the buffer in 2 parts so that we do
	 * not need to allocate a buffer or rely on a static buffer.
	 * This also avoids putting a large buffer on the stack which
	 * might have multi-threading issues.
	 */

	if (write_in_full(fd_out, header, 4) < 0 ||
	    write_in_full(fd_out, buf, size) < 0) {
		strbuf_addf(err, _("packet write failed: %s"), strerror(errno));
		return -1;
	}
	return 0;
}

static int packet_write_gently(const int fd_out, const char *buf, size_t size)
{