X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Frrd_resize.c;h=b242b482f5ee5742681c195c1ac005349e83b2ff;hb=b9c1a336b13d8093b9841848cbed687a6e01a5c3;hp=11efcdaac7617f3fffa4cc768c48be29dfb73b60;hpb=009ac7ac9dde1ba7c450b230b9118cff2cedc9f6;p=rrdtool.git

diff --git a/src/rrd_resize.c b/src/rrd_resize.c
index 11efcda..b242b48 100644
--- a/src/rrd_resize.c
+++ b/src/rrd_resize.c
@@ -57,42 +57,47 @@ int rrd_resize(
 
     rrd_file = rrd_open(infilename, &rrdold, RRD_READWRITE | RRD_COPY);
     if (rrd_file == NULL) {
-        rrd_set_error("could not open RRD");
+        rrd_free(&rrdold);
         return (-1);
     }
     if (LockRRD(rrd_file->fd) != 0) {
         rrd_set_error("could not lock original RRD");
         rrd_free(&rrdold);
-        close(rrd_file->fd);
+        rrd_close(rrd_file);
         return (-1);
     }
 
     if (target_rra >= rrdold.stat_head->rra_cnt) {
         rrd_set_error("no such RRA in this RRD");
         rrd_free(&rrdold);
-        close(rrd_file->fd);
+        rrd_close(rrd_file);
         return (-1);
     }
 
-    if (modify < 0)
+    if (modify < 0) {
         if ((long) rrdold.rra_def[target_rra].row_cnt <= -modify) {
             rrd_set_error("This RRA is not that big");
             rrd_free(&rrdold);
-            close(rrd_file->fd);
+            rrd_close(rrd_file);
             return (-1);
         }
-
+    } else {
+        /* the size of the new file */
+        rrdnew.stat_head = rrd_file->file_len +
+            (rrdold.stat_head->ds_cnt * sizeof(rrd_value_t) * modify);
+    }
     rrd_out_file = rrd_open(outfilename, &rrdnew, RRD_READWRITE | RRD_CREAT);
     if (rrd_out_file == NULL) {
         rrd_set_error("Can't create '%s': %s", outfilename,
                       rrd_strerror(errno));
+        rrd_free(&rrdnew);
         return (-1);
     }
     if (LockRRD(rrd_out_file->fd) != 0) {
         rrd_set_error("could not lock new RRD");
         rrd_free(&rrdold);
-        close(rrd_file->fd);
-        close(rrd_out_file->fd);
+        rrd_close(rrd_file);
+        rrd_close(rrd_out_file);
         return (-1);
     }
 /*XXX: do one write for those parts of header that are unchanged */
@@ -164,12 +169,17 @@ int rrd_resize(
             rrd_write(rrd_out_file, &buffer, sizeof(rrd_value_t) * 1);
             l--;
         }
+#ifndef HAVE_MMAP
         buffer = DNAN;
         l = rrdnew.stat_head->ds_cnt * modify;
         while (l > 0) {
             rrd_write(rrd_out_file, &buffer, sizeof(rrd_value_t) * 1);
             l--;
         }
+#else
+	/* for the mmap case, we did already fill the whole new file with DNAN
+	 * before we copied the old values, so nothing to do here.  */
+#endif
     } else {
         /* Removing rows. Normally this would be just after the cursor
          ** however this may also mean that we wrap to the beginning of
@@ -231,11 +241,9 @@ int rrd_resize(
               sizeof(rra_ptr_t) * rrdnew.stat_head->rra_cnt);
 
     rrd_free(&rrdold);
-    close(rrd_file->fd);
     rrd_close(rrd_file);
 
     rrd_free(&rrdnew);
-    close(rrd_out_file->fd);
     rrd_close(rrd_out_file);
 
     return (0);