Added check for graph timespan overflowing if time_t is 32 bits.

diff --git a/src/rrd_create.c b/src/rrd_create.c
index a36b31d1d01c6e7c2e690ea954f7bd428eeeff96..fd7b9e1b05749801fe50efa7f59e1ddbca0e125a 100644 (file)
--- a/src/rrd_create.c
+++ b/src/rrd_create.c
@@ -12,6 +12,7 @@
 #include "rrd_rpncalc.h"
 #include "rrd_hw.h"
 #include "rrd_client.h"
+#include "../rrd_config.h"
 
 #include "rrd_is_thread_safe.h"
 
@@ -478,6 +479,12 @@ int rrd_create_r2(
                         row_cnt = atoi(token);
                         if (row_cnt <= 0)
                             rrd_set_error("Invalid row count: %i", row_cnt);
+#if SIZEOF_TIME_T == 4
+                        if ((long long) pdp_step * rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt * row_cnt > 4294967296){
+                            /* database timespan > 2**32, would overflow time_t */
+                            rrd_set_error("The time spanned by the database is too large: must be <= 4294967296 seconds");
+                        }
+#endif
                         rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = row_cnt;
                         break;
                     }