Add a new function, nla_validate_nested(), to validate nested Netlink
attributes.
Signed-off-by: Paul Moore <[EMAIL PROTECTED]>
---
include/net/netlink.h | 19 +++++++++++++++++++
1 files changed, 19 insertions(+)
Index: net-2.6.19/include/net/netlink.h
===================================================================
--- net-2.6.19.orig/include/net/netlink.h
+++ net-2.6.19/include/net/netlink.h
@@ -146,6 +146,7 @@
* nla_ok(nla, remaining) does nla fit into remaining bytes?
* nla_next(nla, remaining) get next netlink attribute
* nla_validate() validate a stream of attributes
+ * nla_validate_nested() validate a stream of nested attributes
* nla_find() find attribute in stream of
attributes
* nla_find_nested() find attribute in nested attributes
* nla_parse() parse and validate stream of attrs
@@ -951,6 +952,24 @@ static inline int nla_nest_cancel(struct
}
/**
+ * nla_validate_nested - Validate a stream of nested attributes
+ * @start: container attribute
+ * @maxtype: maximum attribute type to be expected
+ * @policy: validation policy
+ *
+ * Validates all attributes in the nested attribute stream against the
+ * specified policy. Attributes with a type exceeding maxtype will be
+ * ignored. See documenation of struct nla_policy for more details.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+static inline int nla_validate_nested(struct nlattr *start, int maxtype,
+ struct nla_policy *policy)
+{
+ return nla_validate(nla_data(start), nla_len(start), maxtype, policy);
+}
+
+/**
* nla_for_each_attr - iterate over a stream of attributes
* @pos: loop counter, set to current attribute
* @head: head of attribute stream
--
paul moore
linux security @ hp
-
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