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authorPaul Moore <paul.moore@hp.com>2008-01-29 08:38:13 -0500
committerJames Morris <jmorris@namei.org>2008-01-30 08:17:23 +1100
commit224dfbd81e1ff672eb46e7695469c395bd531083 (patch)
treec89c3ab606634a7174db8807b2633df8bb024b8c /security/selinux/include
parentda5645a28a15aed2e541a814ecf9f7ffcd4c4673 (diff)
SELinux: Add a network node caching mechanism similar to the sel_netif_*() functions
This patch adds a SELinux IP address/node SID caching mechanism similar to the sel_netif_*() functions. The node SID queries in the SELinux hooks files are also modified to take advantage of this new functionality. In addition, remove the address length information from the sk_buff parsing routines as it is redundant since we already have the address family. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux/include')
-rw-r--r--security/selinux/include/netnode.h32
-rw-r--r--security/selinux/include/objsec.h9
2 files changed, 41 insertions, 0 deletions
diff --git a/security/selinux/include/netnode.h b/security/selinux/include/netnode.h
new file mode 100644
index 00000000000..1b94450d11d
--- /dev/null
+++ b/security/selinux/include/netnode.h
@@ -0,0 +1,32 @@
+/*
+ * Network node table
+ *
+ * SELinux must keep a mapping of network nodes to labels/SIDs. This
+ * mapping is maintained as part of the normal policy but a fast cache is
+ * needed to reduce the lookup overhead since most of these queries happen on
+ * a per-packet basis.
+ *
+ * Author: Paul Moore <paul.moore@hp.com>
+ *
+ */
+
+/*
+ * (c) Copyright Hewlett-Packard Development Company, L.P., 2007
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _SELINUX_NETNODE_H
+#define _SELINUX_NETNODE_H
+
+int sel_netnode_sid(void *addr, u16 family, u32 *sid);
+
+#endif
diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h
index 2d0a92e97d5..95fb5ec1735 100644
--- a/security/selinux/include/objsec.h
+++ b/security/selinux/include/objsec.h
@@ -100,6 +100,15 @@ struct netif_security_struct {
u32 sid; /* SID for this interface */
};
+struct netnode_security_struct {
+ union {
+ __be32 ipv4; /* IPv4 node address */
+ struct in6_addr ipv6; /* IPv6 node address */
+ } addr;
+ u32 sid; /* SID for this node */
+ u16 family; /* address family */
+};
+
struct sk_security_struct {
struct sock *sk; /* back pointer to sk object */
u32 sid; /* SID of this object */