diff --git a/src/rrd_format.c b/src/rrd_format.c
index 4e53e196481e9de2d0a9fcf50eadb4d5deed9d0d..b7e3eff8b339bb242b795a647595050abf18ec73 100644 (file)
--- a/src/rrd_format.c
+++ b/src/rrd_format.c
rrd_set_error("unknown data source name '%s'", ds_nam);
return -1;
}
+
+off_t rrd_get_header_size(
+ rrd_t *rrd)
+{
+ return sizeof(stat_head_t) + \
+ sizeof(ds_def_t) * rrd->stat_head->ds_cnt + \
+ sizeof(rra_def_t) * rrd->stat_head->rra_cnt + \
+ sizeof(time_t) + \
+ sizeof(live_head_t) + \
+ sizeof(pdp_prep_t) * rrd->stat_head->ds_cnt + \
+ sizeof(cdp_prep_t) * rrd->stat_head->ds_cnt * rrd->stat_head->rra_cnt + \
+ sizeof(rra_ptr_t) * rrd->stat_head->rra_cnt;
+}