* Fixed a memory leak in if_nameindex() - it never freed the buffer that

stored the interfaces from SIOCGIFCONF.
* Fixed iteration over the ifreq structures; the returned structure per
  interface may not be equal to the size of ifreq.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37802 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/network/interfaces.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006, Haiku, Inc. All Rights Reserved.
+ * Copyright 2006-2010, Haiku, Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -14,6 +14,8 @@
 #include <string.h>
 #include <unistd.h>
 
+#include <AutoDeleter.h>
+
 
 namespace BPrivate {
 	class Socket {
@@ -93,6 +95,8 @@ if_nameindex(void)
 	if (interfaces == NULL)
 		return NULL;
 
+	MemoryDeleter deleter(interfaces);
+
 	config.ifc_len = count * sizeof(struct ifreq);
 	config.ifc_req = interfaces;
 	if (ioctl(socket.FD(), SIOCGIFCONF, &config, sizeof(struct ifconf)) < 0)
@@ -104,8 +108,11 @@ if_nameindex(void)
 		return NULL;
 
 	for (int i = 0; i < count; i++) {
-		interfaceArray[i].if_index = interfaces[i].ifr_index;
-		interfaceArray[i].if_name = strdup(interfaces[i].ifr_name);
+		interfaceArray[i].if_index = interfaces->ifr_index;
+		interfaceArray[i].if_name = strdup(interfaces->ifr_name);
+
+		interfaces
+			= (ifreq*)((char*)interfaces + _SIZEOF_ADDR_IFREQ(interfaces[0]));
 	}
 
 	interfaceArray[count].if_index = 0;