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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/sync.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/sync.c')
-rw-r--r--io_uring/sync.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/io_uring/sync.c b/io_uring/sync.c
index f2102afa79ca..64e87ea2b8fb 100644
--- a/io_uring/sync.c
+++ b/io_uring/sync.c
@@ -24,7 +24,7 @@ struct io_sync {
int io_sfr_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
- struct io_sync *sync = io_kiocb_to_cmd(req);
+ struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
if (unlikely(sqe->addr || sqe->buf_index || sqe->splice_fd_in))
return -EINVAL;
@@ -37,7 +37,7 @@ int io_sfr_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
int io_sync_file_range(struct io_kiocb *req, unsigned int issue_flags)
{
- struct io_sync *sync = io_kiocb_to_cmd(req);
+ struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
int ret;
/* sync_file_range always requires a blocking context */
@@ -51,7 +51,7 @@ int io_sync_file_range(struct io_kiocb *req, unsigned int issue_flags)
int io_fsync_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
- struct io_sync *sync = io_kiocb_to_cmd(req);
+ struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
if (unlikely(sqe->addr || sqe->buf_index || sqe->splice_fd_in))
return -EINVAL;
@@ -67,7 +67,7 @@ int io_fsync_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
int io_fsync(struct io_kiocb *req, unsigned int issue_flags)
{
- struct io_sync *sync = io_kiocb_to_cmd(req);
+ struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
loff_t end = sync->off + sync->len;
int ret;
@@ -83,7 +83,7 @@ int io_fsync(struct io_kiocb *req, unsigned int issue_flags)
int io_fallocate_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
- struct io_sync *sync = io_kiocb_to_cmd(req);
+ struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
if (sqe->buf_index || sqe->rw_flags || sqe->splice_fd_in)
return -EINVAL;
@@ -96,7 +96,7 @@ int io_fallocate_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
int io_fallocate(struct io_kiocb *req, unsigned int issue_flags)
{
- struct io_sync *sync = io_kiocb_to_cmd(req);
+ struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
int ret;
/* fallocate always requiring blocking context */