From a52b72cbfa4a04d13a23225742f105595799b694 Mon Sep 17 00:00:00 2001 From: oetiker Date: Thu, 17 Apr 2008 05:35:01 +0000 Subject: [PATCH] do not reset the last_ds store unless the data source type is actually changed. git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1328 a5681a0c-68f1-0310-ab6d-d61299d08faa --- src/rrd_tune.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/src/rrd_tune.c b/src/rrd_tune.c index 1c80e98..89941dc 100644 --- a/src/rrd_tune.c +++ b/src/rrd_tune.c @@ -197,15 +197,17 @@ int rrd_tune( rrd_close(rrd_file); return -1; } - strncpy(rrd.ds_def[ds].dst, dst, DST_SIZE - 1); - rrd.ds_def[ds].dst[DST_SIZE - 1] = '\0'; - - rrd.pdp_prep[ds].last_ds[0] = 'U'; - rrd.pdp_prep[ds].last_ds[1] = 'N'; - rrd.pdp_prep[ds].last_ds[2] = 'K'; - rrd.pdp_prep[ds].last_ds[3] = 'N'; - rrd.pdp_prep[ds].last_ds[4] = '\0'; + /* only reset when something is changed */ + if (strncmp(rrd.ds_def[ds].dst, dst, DST_SIZE - 1) != 0) { + strncpy(rrd.ds_def[ds].dst, dst, DST_SIZE - 1); + rrd.ds_def[ds].dst[DST_SIZE - 1] = '\0'; + rrd.pdp_prep[ds].last_ds[0] = 'U'; + rrd.pdp_prep[ds].last_ds[1] = 'N'; + rrd.pdp_prep[ds].last_ds[2] = 'K'; + rrd.pdp_prep[ds].last_ds[3] = 'N'; + rrd.pdp_prep[ds].last_ds[4] = '\0'; + } break; case 'r': if ((matches = -- 2.11.0