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authorStefan Metzmacher <metze@samba.org>2022-08-11 09:11:15 +0200
committerJens Axboe <axboe@kernel.dk>2022-08-12 17:01:00 -0600
commitf2ccb5aed7bce1d8b3ed5b3385759a5509663028 (patch)
tree32c78d3576a1e594aab4dca3c36efb6ee5dcd93e /io_uring/splice.c
parentaddebd9ac9ca0ef8b3764907bf8018e48caffc64 (diff)
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/splice.c')
-rw-r--r--io_uring/splice.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/io_uring/splice.c b/io_uring/splice.c
index b013ba34bffa..53e4232d0866 100644
--- a/io_uring/splice.c
+++ b/io_uring/splice.c
@@ -26,7 +26,7 @@ struct io_splice {
static int __io_splice_prep(struct io_kiocb *req,
const struct io_uring_sqe *sqe)
{
- struct io_splice *sp = io_kiocb_to_cmd(req);
+ struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
unsigned int valid_flags = SPLICE_F_FD_IN_FIXED | SPLICE_F_ALL;
sp->len = READ_ONCE(sqe->len);
@@ -46,7 +46,7 @@ int io_tee_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
int io_tee(struct io_kiocb *req, unsigned int issue_flags)
{
- struct io_splice *sp = io_kiocb_to_cmd(req);
+ struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
struct file *out = sp->file_out;
unsigned int flags = sp->flags & ~SPLICE_F_FD_IN_FIXED;
struct file *in;
@@ -78,7 +78,7 @@ done:
int io_splice_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
- struct io_splice *sp = io_kiocb_to_cmd(req);
+ struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
sp->off_in = READ_ONCE(sqe->splice_off_in);
sp->off_out = READ_ONCE(sqe->off);
@@ -87,7 +87,7 @@ int io_splice_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
int io_splice(struct io_kiocb *req, unsigned int issue_flags)
{
- struct io_splice *sp = io_kiocb_to_cmd(req);
+ struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
struct file *out = sp->file_out;
unsigned int flags = sp->flags & ~SPLICE_F_FD_IN_FIXED;
loff_t *poff_in, *poff_out;