From f2ccb5aed7bce1d8b3ed5b3385759a5509663028 Mon Sep 17 00:00:00 2001 From: Stefan Metzmacher Date: Thu, 11 Aug 2022 09:11:15 +0200 Subject: io_uring: make io_kiocb_to_cmd() typesafe We need to make sure (at build time) that struct io_cmd_data is not casted to a structure that's larger. Signed-off-by: Stefan Metzmacher Link: https://lore.kernel.org/r/c024cdf25ae19fc0319d4180e2298bade8ed17b8.1660201408.git.metze@samba.org Signed-off-by: Jens Axboe --- io_uring/advise.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'io_uring/advise.c') diff --git a/io_uring/advise.c b/io_uring/advise.c index 581956934c0b..449c6f14649f 100644 --- a/io_uring/advise.c +++ b/io_uring/advise.c @@ -31,7 +31,7 @@ struct io_madvise { int io_madvise_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { #if defined(CONFIG_ADVISE_SYSCALLS) && defined(CONFIG_MMU) - struct io_madvise *ma = io_kiocb_to_cmd(req); + struct io_madvise *ma = io_kiocb_to_cmd(req, struct io_madvise); if (sqe->buf_index || sqe->off || sqe->splice_fd_in) return -EINVAL; @@ -48,7 +48,7 @@ int io_madvise_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) int io_madvise(struct io_kiocb *req, unsigned int issue_flags) { #if defined(CONFIG_ADVISE_SYSCALLS) && defined(CONFIG_MMU) - struct io_madvise *ma = io_kiocb_to_cmd(req); + struct io_madvise *ma = io_kiocb_to_cmd(req, struct io_madvise); int ret; if (issue_flags & IO_URING_F_NONBLOCK) @@ -64,7 +64,7 @@ int io_madvise(struct io_kiocb *req, unsigned int issue_flags) int io_fadvise_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { - struct io_fadvise *fa = io_kiocb_to_cmd(req); + struct io_fadvise *fa = io_kiocb_to_cmd(req, struct io_fadvise); if (sqe->buf_index || sqe->addr || sqe->splice_fd_in) return -EINVAL; @@ -77,7 +77,7 @@ int io_fadvise_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) int io_fadvise(struct io_kiocb *req, unsigned int issue_flags) { - struct io_fadvise *fa = io_kiocb_to_cmd(req); + struct io_fadvise *fa = io_kiocb_to_cmd(req, struct io_fadvise); int ret; if (issue_flags & IO_URING_F_NONBLOCK) { -- cgit v1.2.1