Function cmd_add

util/cbfstool/elogtool.c:332–368

Appends an elog entry to EventLog buffer. */

/* Appends an elog entry to EventLog buffer. */
static int cmd_add(const struct buffer *buf,
		   enum elogtool_flag flags __maybe_unused)
{
	uint8_t data[ELOG_MAX_EVENT_DATA_SIZE];
	size_t data_size = 0;
	struct buffer copy;
	uint8_t type = 0;
	size_t next_event;
	size_t threshold;
	int ret;

	if (cmd_add_parse_args(&type, data, &data_size) != ELOGTOOL_EXIT_SUCCESS) {
		cmd_add_usage();
		return ELOGTOOL_EXIT_BAD_ARGS;
	}

	buffer_clone(&copy, buf);
	buffer_seek(&copy, sizeof(struct elog_header));

	threshold = buffer_size(&copy) * 3 / 4;
	next_event = next_available_event_offset(&copy);

	if (next_event > threshold) {
		/* Shrink ~ 1/4 of the size */
		ret = shrink_buffer(&copy, buffer_size(buf) - threshold);
		if (ret != ELOGTOOL_EXIT_SUCCESS)
			return ret;
		next_event = next_available_event_offset(&copy);
	}

	buffer_seek(&copy, next_event);

	if (!eventlog_init_event(&copy, type, data, data_size))
		return ELOGTOOL_EXIT_NOT_ENOUGH_BUFFER_SPACE;

	return ELOGTOOL_EXIT_SUCCESS;
}

int main(int argc, char **argv)
{