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| author |   Willem de Bruijn <willemb@google.com> | 2017-01-02 17:19:46 -0500 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2017-01-09 17:24:55 +0100 |
| commit | ec23189049651b16dc2ffab35a4371dc1f491aca (patch) | |
| tree | abf3c783fb73b147f463fa686715a08fd2a969c1 /net/netfilter/xt_cgroup.c | |
| parent | xtables: use match, target and data copy_to_user helpers in compat (diff) | |
| download | linux-dev-ec23189049651b16dc2ffab35a4371dc1f491aca.tar.xz linux-dev-ec23189049651b16dc2ffab35a4371dc1f491aca.zip | |
xtables: extend matches and targets with .usersize
In matches and targets that define a kernel-only tail to their
xt_match and xt_target data structs, add a field .usersize that
specifies up to where data is to be shared with userspace.
Performed a search for comment "Used internally by the kernel" to find
relevant matches and targets. Manually inspected the structs to derive
a valid offsetof.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/xt_cgroup.c')
| -rw-r--r-- | net/netfilter/xt_cgroup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/netfilter/xt_cgroup.c b/net/netfilter/xt_cgroup.c index a086a914865f..1db1ce59079f 100644 --- a/net/netfilter/xt_cgroup.c +++ b/net/netfilter/xt_cgroup.c @@ -122,6 +122,7 @@ static struct xt_match cgroup_mt_reg[] __read_mostly = { .checkentry = cgroup_mt_check_v1, .match = cgroup_mt_v1, .matchsize = sizeof(struct xt_cgroup_info_v1), + .usersize = offsetof(struct xt_cgroup_info_v1, priv), .destroy = cgroup_mt_destroy_v1, .me = THIS_MODULE, .hooks = (1 << NF_INET_LOCAL_OUT) | |