From: Wedson Almeida Filho <walmeida@microsoft.com>
Date: Sat, 30 Sep 2023 05:00:09 +0000 (-0300)
Subject: btrfs: move btrfs_xattr_handlers to .rodata
X-Git-Tag: v6.7-rc1~206^2~25
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a25b4189896411136fcce5f271673f6239725ba;p=thirdparty%2Fkernel%2Fstable.git

btrfs: move btrfs_xattr_handlers to .rodata

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

Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: David Sterba <dsterba@suse.com>
Cc: linux-btrfs@vger.kernel.org
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Link: https://lore.kernel.org/r/20230930050033.41174-6-wedsonaf@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 96828a13dd43d..a9f8b173a99f0 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -442,7 +442,7 @@ static const struct xattr_handler btrfs_btrfs_xattr_handler = {
 	.set = btrfs_xattr_handler_set_prop,
 };
 
-const struct xattr_handler *btrfs_xattr_handlers[] = {
+const struct xattr_handler * const btrfs_xattr_handlers[] = {
 	&btrfs_security_xattr_handler,
 	&btrfs_trusted_xattr_handler,
 	&btrfs_user_xattr_handler,
diff --git a/fs/btrfs/xattr.h b/fs/btrfs/xattr.h
index 1cd3fc0a8f178..118118ca3e1de 100644
--- a/fs/btrfs/xattr.h
+++ b/fs/btrfs/xattr.h
@@ -8,7 +8,7 @@
 
 #include <linux/xattr.h>
 
-extern const struct xattr_handler *btrfs_xattr_handlers[];
+extern const struct xattr_handler * const btrfs_xattr_handlers[];
 
 int btrfs_getxattr(struct inode *inode, const char *name,
 		void *buffer, size_t size);