Commit b0d658ec authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: add more build check for uapi 



Add a couple of BUILD_BUG_ON() checking some rsrc uapi structs and SQE
flags.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/ff960df4d5026b9fb5bfd80994b9d3667d3926da.1619536280.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent dddca226

fs/io_uring.c

+7 −0
Original line number Diff line number Diff line
@@ -10134,6 +10134,13 @@ static int __init io_uring_init(void) 
	BUILD_BUG_SQE_ELEM(42, __u16,  personality);

	BUILD_BUG_SQE_ELEM(44, __s32,  splice_fd_in);



	BUILD_BUG_ON(sizeof(struct io_uring_files_update) !=

		     sizeof(struct io_uring_rsrc_update));

	BUILD_BUG_ON(sizeof(struct io_uring_rsrc_update) >

		     sizeof(struct io_uring_rsrc_update2));

	/* should fit into one byte */

	BUILD_BUG_ON(SQE_VALID_FLAGS >= (1 << 8));



	BUILD_BUG_ON(ARRAY_SIZE(io_op_defs) != IORING_OP_LAST);

	BUILD_BUG_ON(__REQ_F_LAST_BIT >= 8 * sizeof(int));

	req_cachep = KMEM_CACHE(io_kiocb, SLAB_HWCACHE_ALIGN | SLAB_PANIC |