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| author | Paul Moore <paul.moore@hp.com> | 2006-09-26 00:54:03 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-09-26 00:54:03 +0200 |
| commit | 4fe5d5c07ab615a52fd1b0ceba5aeed7c612821a (patch) | |
| tree | 245e504bb1049e86f9f6dc369b679c5a5ca495ec | |
| parent | [NETLINK]: add nla_for_each_nested() to the interface list (diff) | |
| download | linux-4fe5d5c07ab615a52fd1b0ceba5aeed7c612821a.tar.xz linux-4fe5d5c07ab615a52fd1b0ceba5aeed7c612821a.zip | |
[Netlink]: add nla_validate_nested()
Add a new function, nla_validate_nested(), to validate nested Netlink
attributes.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/netlink.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h index 2897a73f81eb..4ab68a7a636a 100644 --- a/include/net/netlink.h +++ b/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 sk_buff *skb, struct nlattr *start) } /** + * 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 |