From: Darrick J. Wong <djwong@xxxxxxxxxx>
The symbol xfs_name_dotdot is a global variable that the xfs codebase
uses here and there to look up directory dotdot entries. Currently it's
a non-const variable, which means that it's a mutable global variable.
So far nobody's abused this to cause problems, but let's use the
compiler to enforce that.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_dir2.c | 6 +++++-
fs/xfs/libxfs/xfs_dir2.h | 2 +-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
index 6b531a659b1e..5f1e4799e8fa 100644
--- a/fs/xfs/libxfs/xfs_dir2.c
+++ b/fs/xfs/libxfs/xfs_dir2.c
@@ -19,7 +19,11 @@
#include "xfs_error.h"
#include "xfs_trace.h"
-struct xfs_name xfs_name_dotdot = { (unsigned char *)"..", 2, XFS_DIR3_FT_DIR };
+const struct xfs_name xfs_name_dotdot = {
+ .name = (const unsigned char *)"..",
+ .len = 2,
+ .type = XFS_DIR3_FT_DIR,
+};
/*
* Convert inode mode to directory entry filetype
diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index 55e0557000db..b6df3c34b26a 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -21,7 +21,7 @@ struct xfs_dir2_data_unused;
struct xfs_dir3_icfree_hdr;
struct xfs_dir3_icleaf_hdr;
-extern struct xfs_name xfs_name_dotdot;
+extern const struct xfs_name xfs_name_dotdot;
/*
* Convert inode mode to directory entry filetype
