netfilter: xtables: change targets to return error code

Part of the transition of done by this semantic patch:
// <smpl>
@ rule1 @
struct xt_target 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>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/ipv4/netfilter/ipt_NETMAP.c b/net/ipv4/netfilter/ipt_NETMAP.c
index cbfe5f7e082a..708c7f8f7eea 100644
--- a/net/ipv4/netfilter/ipt_NETMAP.c
+++ b/net/ipv4/netfilter/ipt_NETMAP.c
@@ -28,13 +28,13 @@ static int netmap_tg_check(const struct xt_tgchk_param *par)
 
 	if (!(mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)) {
 		pr_debug("bad MAP_IPS.\n");
-		return false;
+		return -EINVAL;
 	}
 	if (mr->rangesize != 1) {
 		pr_debug("bad rangesize %u.\n", mr->rangesize);
-		return false;
+		return -EINVAL;
 	}
-	return true;
+	return 0;
 }
 
 static unsigned int