diff options
author | Florian Westphal <fw@strlen.de> | 2017-04-16 01:29:15 +0200 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-04-19 17:55:16 +0200 |
commit | dcf67740f22d31be685d7172f05b289c8243ea12 (patch) | |
tree | e7f9efc1a8a7a1115b15ce1a1576ffa4f58a0c9c /net/netfilter/nf_conntrack_amanda.c | |
parent | 906535b04671c84ec8731030d4968570d8d2a16c (diff) |
netfilter: helper: add build-time asserts for helper data size
add a 32 byte scratch area in the helper struct instead of relying
on variable sized helpers plus compile-time asserts to let us know
if 32 bytes aren't enough anymore.
Not having variable sized helpers will later allow to add BUILD_BUG_ON
for the total size of conntrack extensions -- the helper extension is
the only one that doesn't have a fixed size.
The (useless!) NF_CT_HELPER_BUILD_BUG_ON(0); are added so that in case
someone adds a new helper and copy-pastes from one that doesn't store
private data at least some indication that this macro should be used
somehow is there...
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nf_conntrack_amanda.c')
-rw-r--r-- | net/netfilter/nf_conntrack_amanda.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/netfilter/nf_conntrack_amanda.c b/net/netfilter/nf_conntrack_amanda.c index 57a26cc90c9f..03d2ccffa9fa 100644 --- a/net/netfilter/nf_conntrack_amanda.c +++ b/net/netfilter/nf_conntrack_amanda.c @@ -207,6 +207,8 @@ static int __init nf_conntrack_amanda_init(void) { int ret, i; + NF_CT_HELPER_BUILD_BUG_ON(0); + for (i = 0; i < ARRAY_SIZE(search); i++) { search[i].ts = textsearch_prepare(ts_algo, search[i].string, search[i].len, |