linux-kernel - [PATCH 24/29] squashfs: move squashfs_xattr

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Message-Id: <20230930050033.41174-25-wedsonaf@gmail.com>
Date:   Sat, 30 Sep 2023 02:00:28 -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>,
        Phillip Lougher <phillip@...ashfs.org.uk>
Subject: [PATCH 24/29] squashfs: move squashfs_xattr_handlers to .rodata

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

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

Cc: Phillip Lougher <phillip@...ashfs.org.uk>
Signed-off-by: Wedson Almeida Filho <walmeida@...rosoft.com>
---
 fs/squashfs/squashfs.h | 2 +-
 fs/squashfs/xattr.c    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
index a6164fdf9435..5a756e6790b5 100644
--- a/fs/squashfs/squashfs.h
+++ b/fs/squashfs/squashfs.h
@@ -111,4 +111,4 @@ extern const struct address_space_operations squashfs_symlink_aops;
 extern const struct inode_operations squashfs_symlink_inode_ops;
 
 /* xattr.c */
-extern const struct xattr_handler *squashfs_xattr_handlers[];
+extern const struct xattr_handler * const squashfs_xattr_handlers[];
diff --git a/fs/squashfs/xattr.c b/fs/squashfs/xattr.c
index e1e3f3dd5a06..ce6608cabd49 100644
--- a/fs/squashfs/xattr.c
+++ b/fs/squashfs/xattr.c
@@ -262,7 +262,7 @@ static const struct xattr_handler *squashfs_xattr_handler(int type)
 	}
 }
 
-const struct xattr_handler *squashfs_xattr_handlers[] = {
+const struct xattr_handler * const squashfs_xattr_handlers[] = {
 	&squashfs_xattr_user_handler,
 	&squashfs_xattr_trusted_handler,
 	&squashfs_xattr_security_handler,
-- 
2.34.1