X-Git-Url: https://git.octo.it/?p=collectd.git;a=blobdiff_plain;f=src%2Fnetlink.c;h=0bd598cbbf29f96d83980df1f31b6982fc202a40;hp=0bac3e7582dddb8b1a084e8a42fb1aa073454225;hb=06a86a60a7dabc685bdbd81ce3d36ea5f7e2c2d4;hpb=4eca75de34e9c3d7f2391b9c7a5951a27a713804

diff --git a/src/netlink.c b/src/netlink.c
index 0bac3e75..0bd598cb 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -56,6 +56,7 @@ struct ir_link_stats_storage_s {
   uint64_t tx_dropped;
   uint64_t multicast;
   uint64_t collisions;
+  uint64_t rx_nohandler;
 
   uint64_t rx_length_errors;
   uint64_t rx_over_errors;
@@ -91,12 +92,12 @@ struct qos_stats {
 };
 
 static int ir_ignorelist_invert = 1;
-static ir_ignorelist_t *ir_ignorelist_head = NULL;
+static ir_ignorelist_t *ir_ignorelist_head;
 
 static struct mnl_socket *nl;
 
-static char **iflist = NULL;
-static size_t iflist_len = 0;
+static char **iflist;
+static size_t iflist_len;
 
 static const char *config_keys[] = {"Interface", "VerboseInterface",
                                     "QDisc",     "Class",
@@ -253,6 +254,10 @@ static void check_ignorelist_and_submit(const char *dev,
     submit_two(dev, "if_dropped", NULL, stats->rx_dropped, stats->tx_dropped);
     submit_one(dev, "if_multicast", NULL, stats->multicast);
     submit_one(dev, "if_collisions", NULL, stats->collisions);
+#if defined(HAVE_STRUCT_RTNL_LINK_STATS_RX_NOHANDLER) ||                       \
+    defined(HAVE_STRUCT_RTNL_LINK_STATS64_RX_NOHANDLER)
+    submit_one(dev, "if_rx_nohandler", NULL, stats->rx_nohandler);
+#endif
 
     submit_one(dev, "if_rx_errors", "length", stats->rx_length_errors);
     submit_one(dev, "if_rx_errors", "over", stats->rx_over_errors);
@@ -304,6 +309,9 @@ static void check_ignorelist_and_submit64(const char *dev,
   struct ir_link_stats_storage_s s;
 
   COPY_RTNL_LINK_STATS(&s, stats);
+#ifdef HAVE_STRUCT_RTNL_LINK_STATS64_RX_NOHANDLER
+  COPY_RTNL_LINK_VALUE(&s, stats, rx_nohandler);
+#endif
 
   check_ignorelist_and_submit(dev, &s);
 }
@@ -314,6 +322,9 @@ static void check_ignorelist_and_submit32(const char *dev,
   struct ir_link_stats_storage_s s;
 
   COPY_RTNL_LINK_STATS(&s, stats);
+#ifdef HAVE_STRUCT_RTNL_LINK_STATS_RX_NOHANDLER
+  COPY_RTNL_LINK_VALUE(&s, stats, rx_nohandler);
+#endif
 
   check_ignorelist_and_submit(dev, &s);
 }
@@ -357,9 +368,10 @@ static int link_filter_cb(const struct nlmsghdr *nlh,
     if (mnl_attr_get_type(attr) != IFLA_STATS64)
       continue;
 
-    if (mnl_attr_validate2(attr, MNL_TYPE_UNSPEC, sizeof(*stats.stats64)) < 0) {
-      ERROR("netlink plugin: link_filter_cb: IFLA_STATS64 mnl_attr_validate2 "
-            "failed.");
+    uint16_t attr_len = mnl_attr_get_payload_len(attr);
+    if (attr_len < sizeof(*stats.stats64)) {
+      ERROR("netlink plugin: link_filter_cb: IFLA_STATS64 attribute has "
+            "insufficient data.");
       return MNL_CB_ERROR;
     }
     stats.stats64 = mnl_attr_get_payload(attr);
@@ -373,9 +385,10 @@ static int link_filter_cb(const struct nlmsghdr *nlh,
     if (mnl_attr_get_type(attr) != IFLA_STATS)
       continue;
 
-    if (mnl_attr_validate2(attr, MNL_TYPE_UNSPEC, sizeof(*stats.stats32)) < 0) {
-      ERROR("netlink plugin: link_filter_cb: IFLA_STATS mnl_attr_validate2 "
-            "failed.");
+    uint16_t attr_len = mnl_attr_get_payload_len(attr);
+    if (attr_len < sizeof(*stats.stats32)) {
+      ERROR("netlink plugin: link_filter_cb: IFLA_STATS attribute has "
+            "insufficient data.");
       return MNL_CB_ERROR;
     }
     stats.stats32 = mnl_attr_get_payload(attr);
@@ -401,7 +414,8 @@ static int qos_attr_cb(const struct nlattr *attr, void *data) {
   if (mnl_attr_get_type(attr) == TCA_STATS_BASIC) {
     if (mnl_attr_validate2(attr, MNL_TYPE_UNSPEC, sizeof(*q_stats->bs)) < 0) {
       ERROR("netlink plugin: qos_attr_cb: TCA_STATS_BASIC mnl_attr_validate2 "
-            "failed.");
+            "failed: %s",
+            STRERRNO);
       return MNL_CB_ERROR;
     }
     q_stats->bs = mnl_attr_get_payload(attr);
@@ -435,7 +449,7 @@ static int qos_filter_cb(const struct nlmsghdr *nlh, void *args) {
   const char *tc_type;
   char tc_inst[DATA_MAX_NAME_LEN];
 
-  _Bool stats_submitted = 0;
+  bool stats_submitted = false;
 
   if (nlh->nlmsg_type == RTM_NEWQDISC)
     tc_type = "qdisc";
@@ -458,7 +472,7 @@ static int qos_filter_cb(const struct nlmsghdr *nlh, void *args) {
 
   if ((tm->tcm_ifindex >= 0) && ((size_t)tm->tcm_ifindex >= iflist_len)) {
     ERROR("netlink plugin: qos_filter_cb: tm->tcm_ifindex = %i "
-          ">= iflist_len = %zu",
+          ">= iflist_len = %" PRIsz,
           tm->tcm_ifindex, iflist_len);
     return MNL_CB_ERROR;
   }
@@ -525,9 +539,15 @@ static int qos_filter_cb(const struct nlmsghdr *nlh, void *args) {
     if (q_stats.bs != NULL || q_stats.qs != NULL) {
       char type_instance[DATA_MAX_NAME_LEN];
 
-      stats_submitted = 1;
+      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 (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);
@@ -551,7 +571,8 @@ static int qos_filter_cb(const struct nlmsghdr *nlh, void *args) {
 
     if (mnl_attr_validate2(attr, MNL_TYPE_UNSPEC, sizeof(*ts)) < 0) {
       ERROR("netlink plugin: qos_filter_cb: TCA_STATS mnl_attr_validate2 "
-            "failed.");
+            "failed: %s",
+            STRERRNO);
       return MNL_CB_ERROR;
     }
     ts = mnl_attr_get_payload(attr);
@@ -559,7 +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 (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);
@@ -686,8 +713,8 @@ static int ir_read(void) {
     ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
   }
   if (ret < 0) {
-    ERROR("netlink plugin: ir_read: mnl_socket_recvfrom failed.");
-    return -1;
+    ERROR("netlink plugin: ir_read: mnl_socket_recvfrom failed: %s", STRERRNO);
+    return (-1);
   }
 
   /* `link_filter_cb' will update `iflist' which is used here to iterate
@@ -707,7 +734,7 @@ static int ir_read(void) {
         continue;
       }
 
-      DEBUG("netlink plugin: ir_read: querying %s from %s (%zu).",
+      DEBUG("netlink plugin: ir_read: querying %s from %s (%" PRIsz ").",
             type_name[type_index], iflist[ifindex], ifindex);
 
       nlh = mnl_nlmsg_put_header(buf);
@@ -731,10 +758,10 @@ static int ir_read(void) {
         ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
       }
       if (ret < 0) {
-        ERROR("netlink plugin: ir_read:mnl_socket_recvfrom failed.");
+        ERROR("netlink plugin: ir_read: mnl_socket_recvfrom failed: %s",
+              STRERRNO);
         continue;
       }
-
     } /* for (type_index) */
   }   /* for (if_index) */