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authorStefan Metzmacher <metze@samba.org>2022-08-11 10:11:15 +0300
committerJens Axboe <axboe@kernel.dk>2022-08-13 02:01:00 +0300
commitf2ccb5aed7bce1d8b3ed5b3385759a5509663028 (patch)
tree32c78d3576a1e594aab4dca3c36efb6ee5dcd93e /io_uring/advise.c
parentaddebd9ac9ca0ef8b3764907bf8018e48caffc64 (diff)
downloadlinux-f2ccb5aed7bce1d8b3ed5b3385759a5509663028.tar.xz
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 <metze@samba.org> Link: https://lore.kernel.org/r/c024cdf25ae19fc0319d4180e2298bade8ed17b8.1660201408.git.metze@samba.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/advise.c')
-rw-r--r--io_uring/advise.c8
1 files changed, 4 insertions, 4 deletions
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) {