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io_uring: simplify io_file_get()

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Keep ->needs_file_no_error check out of io_file_get(), and let callers
handle it. It makes it more straightforward. Also, as the only error it
can hand back -EBADF, make it return a file or NULL.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-10-10 18:34:08 +01:00 committed by Jens Axboe
parent 479f517be5
commit 8371adf53c
1 changed files with 14 additions and 16 deletions
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30
fs/io_uring.c
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@ -968,8 +968,8 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx,
struct io_uring_files_update *ip,
unsigned nr_args);
static void __io_clean_op(struct io_kiocb *req);
static int io_file_get(struct io_submit_state *state, struct io_kiocb *req,
int fd, struct file **out_file, bool fixed);
static struct file *io_file_get(struct io_submit_state *state,
struct io_kiocb *req, int fd, bool fixed);
static void __io_queue_sqe(struct io_kiocb *req, struct io_comp_state *cs);
static void io_file_put_work(struct work_struct *work);
@ -3486,7 +3486,6 @@ static int __io_splice_prep(struct io_kiocb *req,
{
struct io_splice* sp = &req->splice;
unsigned int valid_flags = SPLICE_F_FD_IN_FIXED | SPLICE_F_ALL;
int ret;
if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
return -EINVAL;
@ -3498,10 +3497,10 @@ static int __io_splice_prep(struct io_kiocb *req,
if (unlikely(sp->flags & ~valid_flags))
return -EINVAL;
ret = io_file_get(NULL, req, READ_ONCE(sqe->splice_fd_in), &sp->file_in,
(sp->flags & SPLICE_F_FD_IN_FIXED));
if (ret)
return ret;
sp->file_in = io_file_get(NULL, req, READ_ONCE(sqe->splice_fd_in),
(sp->flags & SPLICE_F_FD_IN_FIXED));
if (!sp->file_in)
return -EBADF;
req->flags |= REQ_F_NEED_CLEANUP;
if (!S_ISREG(file_inode(sp->file_in)->i_mode)) {
@ -5980,15 +5979,15 @@ static inline struct file *io_file_from_index(struct io_ring_ctx *ctx,
return table->files[index & IORING_FILE_TABLE_MASK];
}
static int io_file_get(struct io_submit_state *state, struct io_kiocb *req,
int fd, struct file **out_file, bool fixed)
static struct file *io_file_get(struct io_submit_state *state,
struct io_kiocb *req, int fd, bool fixed)
{
struct io_ring_ctx *ctx = req->ctx;
struct file *file;
if (fixed) {
if (unlikely((unsigned int)fd >= ctx->nr_user_files))
return -EBADF;
return NULL;
fd = array_index_nospec(fd, ctx->nr_user_files);
file = io_file_from_index(ctx, fd);
if (file) {
@ -6000,11 +5999,7 @@ static int io_file_get(struct io_submit_state *state, struct io_kiocb *req,
file = __io_file_get(state, fd);
}
if (file || io_op_defs[req->opcode].needs_file_no_error) {
*out_file = file;
return 0;
}
return -EBADF;
return file;
}
static int io_req_set_file(struct io_submit_state *state, struct io_kiocb *req,
@ -6016,7 +6011,10 @@ static int io_req_set_file(struct io_submit_state *state, struct io_kiocb *req,
if (unlikely(!fixed && io_async_submit(req->ctx)))
return -EBADF;
return io_file_get(state, req, fd, &req->file, fixed);
req->file = io_file_get(state, req, fd, fixed);
if (req->file || io_op_defs[req->opcode].needs_file_no_error)
return 0;
return -EBADF;
}
static enum hrtimer_restart io_link_timeout_fn(struct hrtimer *timer)