netfilter: xtables: change matches to return error code
The following semantic patch does part of the transformation:
// <smpl>
@ rule1 @
struct xt_match ops;
identifier check;
@@
ops.checkentry = check;
@@
identifier rule1.check;
@@
check(...) { <...
-return true;
+return 0;
...> }
@@
identifier rule1.check;
@@
check(...) { <...
-return false;
+return -EINVAL;
...> }
// </smpl>
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index a9fec38..68e89f0 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -228,21 +228,21 @@
if (nf_ct_l3proto_try_module_get(par->family) < 0) {
pr_info("cannot load conntrack support for "
"address family %u\n", par->family);
- return false;
+ return -EINVAL;
}
/* init private data */
info->data = kmalloc(sizeof(struct xt_connlimit_data), GFP_KERNEL);
if (info->data == NULL) {
nf_ct_l3proto_module_put(par->family);
- return false;
+ return -EINVAL;
}
spin_lock_init(&info->data->lock);
for (i = 0; i < ARRAY_SIZE(info->data->iphash); ++i)
INIT_LIST_HEAD(&info->data->iphash[i]);
- return true;
+ return 0;
}
static void connlimit_mt_destroy(const struct xt_mtdtor_param *par)