X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=src%2Frrd_create.c;h=a1b4e5a4efc4bec8ee77dc1ad3b037c41076056a;hp=9a971cc4777560024b65558f916188b296df579c;hb=8f9c2c2b3c3f8a65e24dd9d8d612eafe48ccfb2e;hpb=2c2a2654452de47d1504e7a5b6e4e63d0abb860e

diff --git a/src/rrd_create.c b/src/rrd_create.c
index 9a971cc..a1b4e5a 100644
--- a/src/rrd_create.c
+++ b/src/rrd_create.c
@@ -13,6 +13,7 @@
 #include "rrd_hw.h"
 
 #include "rrd_is_thread_safe.h"
+static int opt_no_overwrite = 0;
 
 #ifdef WIN32
 # include <process.h>
@@ -39,6 +40,7 @@ int rrd_create(
     struct option long_options[] = {
         {"start", required_argument, 0, 'b'},
         {"step", required_argument, 0, 's'},
+        {"no-overwrite", no_argument, 0, 'O'},
         {0, 0, 0, 0}
     };
     int       option_index = 0;
@@ -54,7 +56,7 @@ int rrd_create(
     opterr = 0;         /* initialize getopt */
 
     while (1) {
-        opt = getopt_long(argc, argv, "b:s:", long_options, &option_index);
+        opt = getopt_long(argc, argv, "Ob:s:", long_options, &option_index);
 
         if (opt == EOF)
             break;
@@ -90,6 +92,10 @@ int rrd_create(
             pdp_step = long_tmp;
             break;
 
+        case 'O':
+            opt_no_overwrite = 1;
+	    break;
+
         case '?':
             if (optopt != 0)
                 rrd_set_error("unknown option '%c'", optopt);
@@ -679,6 +685,10 @@ int rrd_create_fn(
     rrd_t     rrd_dn;
     unsigned  rrd_flags = RRD_READWRITE | RRD_CREAT;
 
+    if (opt_no_overwrite) {
+      rrd_flags |= RRD_EXCL ;
+    }
+
     unkn_cnt = 0;
     for (i = 0; i < rrd->stat_head->rra_cnt; i++)
         unkn_cnt += rrd->stat_head->ds_cnt * rrd->rra_def[i].row_cnt;