linux-kernel - [PATCH 16/29] jfs: move jfs_xattr

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Message-Id: <20230930050033.41174-17-wedsonaf@gmail.com>
Date:   Sat, 30 Sep 2023 02:00:20 -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>,
        Dave Kleikamp <shaggy@...nel.org>,
        jfs-discussion@...ts.sourceforge.net
Subject: [PATCH 16/29] jfs: move jfs_xattr_handlers to .rodata

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

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

Cc: Dave Kleikamp <shaggy@...nel.org>
Cc: jfs-discussion@...ts.sourceforge.net
Signed-off-by: Wedson Almeida Filho <walmeida@...rosoft.com>
---
 fs/jfs/jfs_xattr.h | 2 +-
 fs/jfs/xattr.c     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/jfs/jfs_xattr.h b/fs/jfs/jfs_xattr.h
index 0d33816d251d..ec67d8554d2c 100644
--- a/fs/jfs/jfs_xattr.h
+++ b/fs/jfs/jfs_xattr.h
@@ -46,7 +46,7 @@ extern int __jfs_setxattr(tid_t, struct inode *, const char *, const void *,
 extern ssize_t __jfs_getxattr(struct inode *, const char *, void *, size_t);
 extern ssize_t jfs_listxattr(struct dentry *, char *, size_t);
 
-extern const struct xattr_handler *jfs_xattr_handlers[];
+extern const struct xattr_handler * const jfs_xattr_handlers[];
 
 #ifdef CONFIG_JFS_SECURITY
 extern int jfs_init_security(tid_t, struct inode *, struct inode *,
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index 931e50018f88..001c900a2b4d 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -985,7 +985,7 @@ static const struct xattr_handler jfs_trusted_xattr_handler = {
 	.set = jfs_xattr_set,
 };
 
-const struct xattr_handler *jfs_xattr_handlers[] = {
+const struct xattr_handler * const jfs_xattr_handlers[] = {
 	&jfs_os2_xattr_handler,
 	&jfs_user_xattr_handler,
 	&jfs_security_xattr_handler,
-- 
2.34.1