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author | Johannes Berg <johannes.berg@intel.com> | 2018-09-26 11:15:34 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2018-09-28 10:24:39 -0700 |
commit | 1501d13596b92d6d1f0ea5e104be838188b6e026 (patch) | |
tree | 8cce360cee760f94af43ef1c236cdbbbbf57a4d3 /net | |
parent | netlink: allow NLA_NESTED to specify nested policy to validate (diff) | |
download | linux-dev-1501d13596b92d6d1f0ea5e104be838188b6e026.tar.xz linux-dev-1501d13596b92d6d1f0ea5e104be838188b6e026.zip |
netlink: add nested array policy validation
Sometimes nested netlink attributes are just used as arrays, with
the nla_type() of each not being used; we have this in nl80211 and
e.g. NFTA_SET_ELEM_LIST_ELEMENTS.
Add the ability to validate this type of message directly in the
policy, by adding the type NLA_NESTED_ARRAY which does exactly
this: require a first level of nesting but ignore the attribute
type, and then inside each require a second level of nested and
validate those attributes against a given policy (if present).
Note that some nested array types actually require that all of
the entries have the same index, this is possible to express in
a nested policy already, apart from the validation that only the
one allowed type is used.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions