linux-kernel - [PATCH 29/29] net: move sockfs_xattr

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Message-Id: <20230930050033.41174-30-wedsonaf@gmail.com>
Date:   Sat, 30 Sep 2023 02:00:33 -0300
From:   Wedson Almeida Filho <wedsonaf@...il.com>
To:     Alexander Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        linux-fsdevel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Wedson Almeida Filho <walmeida@...rosoft.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Richard Cochran <richardcochran@...il.com>,
        netdev@...r.kernel.org
Subject: [PATCH 29/29] net: move sockfs_xattr_handlers to .rodata

From: Wedson Almeida Filho <walmeida@...rosoft.com>

This makes it harder for accidental or malicious changes to
sockfs_xattr_handlers at runtime.

Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: Richard Cochran <richardcochran@...il.com>
Cc: netdev@...r.kernel.org
Signed-off-by: Wedson Almeida Filho <walmeida@...rosoft.com>
---
 include/linux/pseudo_fs.h | 2 +-
 net/socket.c              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/pseudo_fs.h b/include/linux/pseudo_fs.h
index eceda1d1407a..730f77381d55 100644
--- a/include/linux/pseudo_fs.h
+++ b/include/linux/pseudo_fs.h
@@ -5,7 +5,7 @@
 
 struct pseudo_fs_context {
 	const struct super_operations *ops;
-	const struct xattr_handler **xattr;
+	const struct xattr_handler * const *xattr;
 	const struct dentry_operations *dops;
 	unsigned long magic;
 };
diff --git a/net/socket.c b/net/socket.c
index 2b0e54b2405c..0a99fc22641e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -400,7 +400,7 @@ static const struct xattr_handler sockfs_security_xattr_handler = {
 	.set = sockfs_security_xattr_set,
 };
 
-static const struct xattr_handler *sockfs_xattr_handlers[] = {
+static const struct xattr_handler * const sockfs_xattr_handlers[] = {
 	&sockfs_xattr_handler,
 	&sockfs_security_xattr_handler,
 	NULL
-- 
2.34.1