[Linux-ntfs-dev] [PATCH] ntfs: Replace struct ntfs_name 0-sized array with flexible array

[Kees C. <kee...@ch...>]

ntfs_name::name is used as a destination in memcpy(), so it cannot be a
0-sized array any more. Convert it to a flexible array and annotated
with __counted_by, which matches the allocations.

Signed-off-by: Kees Cook <kee...@ch...>
---
Cc: Anton Altaparmakov <an...@tu...>
Cc: Namjae Jeon <lin...@ke...>
Cc: "Gustavo A. R. Silva" <gus...@ke...>
Cc: lin...@li...
Cc: lin...@vg...
---
 fs/ntfs/dir.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ntfs/dir.h b/fs/ntfs/dir.h
index 0e326753df40..cafcd339094c 100644
--- a/fs/ntfs/dir.h
+++ b/fs/ntfs/dir.h
@@ -22,7 +22,7 @@ typedef struct {
 	MFT_REF mref;
 	FILE_NAME_TYPE_FLAGS type;
 	u8 len;
-	ntfschar name[0];
+	ntfschar name[] __counted_by(len);
 } __attribute__ ((__packed__)) ntfs_name;
 
 /* The little endian Unicode string $I30 as a global constant. */
-- 
2.34.1