X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Frrd_update.c;h=1230753b602fdb12ab7bfd18568292fbe8a5bdc1;hb=aa4d951ab71eb7fe57840c3baaddf36809806aef;hp=347da822bf9dc569719a52a196fed5e87edb56a0;hpb=9a47d693d60f953fc07119670781c92fde560be0;p=rrdtool.git

diff --git a/src/rrd_update.c b/src/rrd_update.c
index 347da82..1230753 100644
--- a/src/rrd_update.c
+++ b/src/rrd_update.c
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * RRDtool 1.2.8  Copyright by Tobi Oetiker, 1997-2005
+ * RRDtool 1.2.10  Copyright by Tobi Oetiker, 1997-2005
  *****************************************************************************
  * rrd_update.c  RRD Update Function
  *****************************************************************************
@@ -252,9 +252,9 @@ _rrd_update(char *filename, char *template, int argc, char **argv,
 
     FILE             *rrd_file;
     rrd_t            rrd;
-    time_t           current_time;
-	time_t           rra_time; /* time of update for a RRA */
-    unsigned long    current_time_usec;  /* microseconds part of current time */
+    time_t           current_time = 0;
+    time_t           rra_time = 0;  	 /* time of update for a RRA */
+    unsigned long    current_time_usec=0;/* microseconds part of current time */
     struct timeval   tmp_time;           /* used for time conversion */
 
     char             **updvals;
@@ -595,10 +595,18 @@ _rrd_update(char *filename, char *template, int argc, char **argv,
 	for(i=0;i<rrd.stat_head->ds_cnt;i++){
 	    enum dst_en dst_idx;
 	    dst_idx= dst_conv(rrd.ds_def[i].dst);
-		/* NOTE: DST_CDEF should never enter this if block, because
-		 * updvals[i+1][0] is initialized to 'U'; unless the caller
-		 * accidently specified a value for the DST_CDEF. To handle 
-		 * this case, an extra check is required. */
+
+            /* make sure we do not build diffs with old last_ds values */
+	    if(rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt < interval 
+	    	&& ( dst_idx == DST_COUNTER || dst_idx == DST_DERIVE)){
+		strncpy(rrd.pdp_prep[i].last_ds,"U",LAST_DS_LEN-1);
+	    }
+
+  	    /* NOTE: DST_CDEF should never enter this if block, because
+             * updvals[i+1][0] is initialized to 'U'; unless the caller
+	     * accidently specified a value for the DST_CDEF. To handle 
+	      * this case, an extra check is required. */
+
 	    if((updvals[i+1][0] != 'U') &&
 		   (dst_idx != DST_CDEF) &&
 	       rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt >= interval) {