squashfs: move squashfs_xattr_handlers to .rodata

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

Cc: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Link: https://lore.kernel.org/r/20230930050033.41174-25-wedsonaf@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
index a6164fdf9435db66e15b1639e046e000a9c9d729..5a756e6790b5b75705c5c0d8a22fa99463a13b29 100644 (file)
--- 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 e1e3f3dd5a06b9e06869381edfb9e633222b1286..ce6608cabd49f453dbf5b414752d4d441768db55 100644 (file)
--- 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,