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>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/netfilter/xt_multiport.c b/net/netfilter/xt_multiport.c
index 4fa90c86fdb5..b446738eab1a 100644
--- a/net/netfilter/xt_multiport.c
+++ b/net/netfilter/xt_multiport.c
@@ -152,7 +152,7 @@ check(u_int16_t proto,
 		&& count <= XT_MULTI_PORTS;
 }
 
-static bool multiport_mt_check_v0(const struct xt_mtchk_param *par)
+static int multiport_mt_check_v0(const struct xt_mtchk_param *par)
 {
 	const struct ipt_ip *ip = par->entryinfo;
 	const struct xt_multiport *multiinfo = par->matchinfo;
@@ -161,7 +161,7 @@ static bool multiport_mt_check_v0(const struct xt_mtchk_param *par)
 		     multiinfo->count);
 }
 
-static bool multiport_mt_check(const struct xt_mtchk_param *par)
+static int multiport_mt_check(const struct xt_mtchk_param *par)
 {
 	const struct ipt_ip *ip = par->entryinfo;
 	const struct xt_multiport_v1 *multiinfo = par->matchinfo;
@@ -170,7 +170,7 @@ static bool multiport_mt_check(const struct xt_mtchk_param *par)
 		     multiinfo->count);
 }
 
-static bool multiport_mt6_check_v0(const struct xt_mtchk_param *par)
+static int multiport_mt6_check_v0(const struct xt_mtchk_param *par)
 {
 	const struct ip6t_ip6 *ip = par->entryinfo;
 	const struct xt_multiport *multiinfo = par->matchinfo;
@@ -179,7 +179,7 @@ static bool multiport_mt6_check_v0(const struct xt_mtchk_param *par)
 		     multiinfo->count);
 }
 
-static bool multiport_mt6_check(const struct xt_mtchk_param *par)
+static int multiport_mt6_check(const struct xt_mtchk_param *par)
 {
 	const struct ip6t_ip6 *ip = par->entryinfo;
 	const struct xt_multiport_v1 *multiinfo = par->matchinfo;