netfilter: xtables: change xt_match.checkentry return type
Restore function signatures from bool to int so that we can report
memory allocation failures or similar using -ENOMEM rather than
always having to pass -EINVAL back.
This semantic patch may not be too precise (checking for functions
that use xt_mtchk_param rather than functions referenced by
xt_match.checkentry), but reviewed, it produced the intended result.
// <smpl>
@@
type bool;
identifier check, par;
@@
-bool check
+int check
(struct xt_mtchk_param *par) { ... }
// </smpl>
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index b4d7741..7d14121 100644
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -40,7 +40,7 @@
#define STRING_TEXT_PRIV(m) ((struct xt_string_info *)(m))
-static bool string_mt_check(const struct xt_mtchk_param *par)
+static int string_mt_check(const struct xt_mtchk_param *par)
{
struct xt_string_info *conf = par->matchinfo;
struct ts_config *ts_conf;