when resize converts a v1 rrd to v3 it should also change the version number in the...

[rrdtool.git] / src / rrd_resize.c

diff --git a/src/rrd_resize.c b/src/rrd_resize.c
index 4613a87..11d1ca8 100644 (file)
--- a/src/rrd_resize.c
+++ b/src/rrd_resize.c
@@ -11,15 +11,16 @@
 int
 rrd_resize(int argc, char **argv)
 {
-    char             *infilename,outfilename[11]="resize.rrd";
-    FILE             *infile,*outfile;
-    rrd_t             rrdold,rrdnew;
-    rrd_value_t       buffer;
-    unsigned long     l,rra;
-    long              modify;
-    unsigned long     target_rra;
-    int               grow=0,shrink=0;
-    char             *endptr;
+    char               *infilename,outfilename[11]="resize.rrd";
+    FILE               *infile,*outfile;
+    rrd_t              rrdold,rrdnew;
+    rrd_value_t                buffer;
+    int                        version;
+    unsigned long      l,rra;
+    long               modify;
+    unsigned long      target_rra;
+    int                        grow=0,shrink=0;
+    char               *endptr;
 
     infilename=argv[1];
     if (!strcmp(infilename,"resize.rrd")) {
@@ -84,6 +85,19 @@ rrd_resize(int argc, char **argv)
     rrdnew.cdp_prep  = rrdold.cdp_prep;
     rrdnew.rra_ptr   = rrdold.rra_ptr;
 
+    version = atoi(rrdold.stat_head->version);
+    switch (version) {
+       case 3: break;
+       case 1: rrdold.stat_head->version[3]='3';
+               break;
+       default: {
+               rrd_set_error("Do not know how to handle RRD version %s",rrdold.stat_head->version);
+               rrd_free(&rrdold);      
+               fclose(infile);
+               return(-1);
+               }
+    }
+
     if ((outfile=fopen(outfilename,"wb"))==NULL) {
         rrd_set_error("Can't create '%s'",outfilename);
         return(-1);