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>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/netfilter/xt_quota.c b/net/netfilter/xt_quota.c
index 2861fac5f2e19..766e71c6dc55d 100644
--- a/net/netfilter/xt_quota.c
+++ b/net/netfilter/xt_quota.c
@@ -48,14 +48,14 @@ static int quota_mt_check(const struct xt_mtchk_param *par)
 	struct xt_quota_info *q = par->matchinfo;
 
 	if (q->flags & ~XT_QUOTA_MASK)
-		return false;
+		return -EINVAL;
 
 	q->master = kmalloc(sizeof(*q->master), GFP_KERNEL);
 	if (q->master == NULL)
-		return false;
+		return -EINVAL;
 
 	q->master->quota = q->quota;
-	return true;
+	return 0;
 }
 
 static void quota_mt_destroy(const struct xt_mtdtor_param *par)