Prepare for the coming implementation by GCC and Clang of the
__counted_by attribute. Flexible array members annotated with
__counted_by can have their accesses bounds-checked at run-time checking
via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE
(for strcpy/memcpy-family functions).
Cc: Mikulas Patocka <miku...@artax.karlin.mff.cuni.cz>
Cc: Kees Cook <keesc...@chromium.org>
Cc: "Gustavo A. R. Silva" <gustavo...@kernel.org>
Cc: Nathan Chancellor <nat...@kernel.org>
Cc: Nick Desaulniers <ndesaulni...@google.com>
Cc: Justin Stitt <justinst...@google.com>
Cc: linux-ker...@vger.kernel.org
Cc: linux-hardening@vger.kernel.org
Cc: l...@lists.linux.dev
Signed-off-by: Bill Wendling <mo...@google.com>
---
fs/hpfs/hpfs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/hpfs/hpfs.h b/fs/hpfs/hpfs.h
index 281dec8f636b..ac137787f1f9 100644
--- a/fs/hpfs/hpfs.h
+++ b/fs/hpfs/hpfs.h
@@ -357,7 +357,7 @@ struct hpfs_dirent {
u8 ix; /* code page index (of filename), see
struct code_page_data */
u8 namelen; /* file name length */
- u8 name[]; /* file name */
+ u8 name[] __counted_by(namelen); /* file name */
/* dnode_secno down; btree down pointer, if present,
follows name on next word boundary, or maybe it
precedes next dirent, which is on a word boundary. */
--
2.45.0.rc1.225.g2a3ae87e7f-goog
