linux-kernel - [PATCH 13/14] sysctl: SIZE_MAX->ARRAY_SIZE in register_net

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Message-Id: <20230726140635.2059334-14-j.granados@samsung.com>
Date:   Wed, 26 Jul 2023 16:06:33 +0200
From:   Joel Granados <j.granados@...sung.com>
To:     mcgrof@...nel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     willy@...radead.org, keescook@...omium.org, josh@...htriplett.org,
        Joel Granados <j.granados@...sung.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 13/14] sysctl: SIZE_MAX->ARRAY_SIZE in register_net_sysctl

This is part of the effort to remove the end element (sentinel) from the
ctl_table arrays. Now that all the callers to register_net_sysctl are
actual arrays, we replace SIZE_MAX with ARRAY_SIZE of the table.

Stopping condition continues to be based on both size and procname null
test. This sets things up for when the sentinel element is actually
removed: Before removing sentinel the stopping criteria will be the last
null element. When the sentinel is removed then the (correct) size will
take over.

Signed-off-by: Joel Granados <j.granados@...sung.com>
---
 include/net/net_namespace.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index e4e5fe75a281..75dba309e043 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -470,7 +470,7 @@ void unregister_pernet_device(struct pernet_operations *);
 struct ctl_table;
 
 #define register_net_sysctl(net, path, table)	\
-	register_net_sysctl_sz(net, path, table, SIZE_MAX)
+	register_net_sysctl_sz(net, path, table, ARRAY_SIZE(table))
 #ifdef CONFIG_SYSCTL
 int net_sysctl_init(void);
 struct ctl_table_header *register_net_sysctl_sz(struct net *net, const char *path,
-- 
2.30.2