Function eventlog_init_event

util/cbfstool/eventlog.c:729–761

* Initializes the eventlog header with the given type and data, * and calculates the checksum. * buffer_get() points to the event to be initialized. * On success it returns 1, otherwise 0. */

 * On success it returns 1, otherwise 0.
 */
int eventlog_init_event(const struct buffer *buf, uint8_t type,
			const void *data, int data_size)
{
	struct event_header *event;
	time_t secs = time(NULL);
	struct tm tm;

	/* Must have at least size for data + checksum byte */
	if (buffer_size(buf) < (size_t)data_size + 1)
		return 0;

	event = buffer_get(buf);

	event->type = type;
	gmtime_r(&secs, &tm);
	/* Month should be +1, since gmtime uses 0 as first month */
	elog_fill_timestamp(event, tm.tm_sec, tm.tm_min, tm.tm_hour,
			    tm.tm_mday, tm.tm_mon + 1, tm.tm_year);

	if (data && data_size) {
		uint32_t *ptr = (uint32_t *)&event[1];
		memcpy(ptr, data, data_size);
	}

	/* Header + data + checksum */
	event->length = sizeof(*event) + data_size + 1;

	/* Zero the checksum byte and then compute checksum */
	elog_update_checksum(event, 0);
	elog_update_checksum(event, -(elog_checksum_event(event)));

	return 1;
}