X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fnetlink.c;h=37c2e294971c1ca1d2f3a580c5abfeb6bb108f75;hb=c4439c9cb3e2348ad7013644731de27a55eca478;hp=045854793ed5a81ba03f82f3b12c6fa9262fe3b5;hpb=a0412f28fc15eb04a9a630678a97b6bce2d71fb1;p=collectd.git

diff --git a/src/netlink.c b/src/netlink.c
index 04585479..37c2e294 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -27,8 +27,8 @@
 
 #include "collectd.h"
 
-#include "common.h"
 #include "plugin.h"
+#include "utils/common/common.h"
 
 #include <asm/types.h>
 
@@ -541,7 +541,13 @@ static int qos_filter_cb(const struct nlmsghdr *nlh, void *args) {
 
       stats_submitted = true;
 
-      snprintf(type_instance, sizeof(type_instance), "%s-%s", tc_type, tc_inst);
+      int r = snprintf(type_instance, sizeof(type_instance), "%s-%s", tc_type,
+                       tc_inst);
+      if ((size_t)r >= sizeof(type_instance)) {
+        ERROR("netlink plugin: type_instance truncated to %zu bytes, need %d",
+              sizeof(type_instance), r);
+        return MNL_CB_ERROR;
+      }
 
       if (q_stats.bs != NULL) {
         submit_one(dev, "ipt_bytes", type_instance, q_stats.bs->bytes);
@@ -574,7 +580,13 @@ static int qos_filter_cb(const struct nlmsghdr *nlh, void *args) {
     if (!stats_submitted && ts != NULL) {
       char type_instance[DATA_MAX_NAME_LEN];
 
-      snprintf(type_instance, sizeof(type_instance), "%s-%s", tc_type, tc_inst);
+      int r = snprintf(type_instance, sizeof(type_instance), "%s-%s", tc_type,
+                       tc_inst);
+      if ((size_t)r >= sizeof(type_instance)) {
+        ERROR("netlink plugin: type_instance truncated to %zu bytes, need %d",
+              sizeof(type_instance), r);
+        return MNL_CB_ERROR;
+      }
 
       submit_one(dev, "ipt_bytes", type_instance, ts->bytes);
       submit_one(dev, "ipt_packets", type_instance, ts->packets);