Changeset 28394 in vbox for trunk

Timestamp:

Apr 16, 2010 7:09:47 AM (15 years ago)

Author:

vboxsync

Message:

NAT: paranoid border check.

File:

• trunk/src/VBox/Devices/Network/slirp/misc.c (modified) (2 diffs)

trunk/src/VBox/Devices/Network/slirp/misc.c

@@ -217 +217 @@
     Assert(it->magic == ITEM_MAGIC);
     zone = it->zone;
+    /* check bourder magic */
+    Assert((*(uint32_t *)(((uint8_t *)&it[1]) + zone->size) == 0xabadbabe));
     RTCritSectEnter(&zone->csZone);
     Assert(zone->magic == ZONE_MAGIC);
@@ -278 +280 @@
     struct item *it;
     zone->max_items = max;
-    zone->area = RTMemAllocZ(max * (sizeof(struct item) + zone->size));
+    zone->area = RTMemAllocZ(max * (sizeof(struct item) + zone->size + sizeof(uint32_t)));
     for (; i < max; ++i)
     {
-        it = (struct item *)(((uint8_t *)zone->area) + i*(sizeof(struct item) + zone->size));
+        it = (struct item *)(((uint8_t *)zone->area) + i*(sizeof(struct item) + zone->size + sizeof(uint32_t)));
         it->magic = ITEM_MAGIC;
         it->zone = zone;
+        *(uint32_t *)(((uint8_t *)&it[1]) + zone->size) = 0xabadbabe;
         LIST_INSERT_HEAD(&zone->free_items, it, list);
     }