linux/io_uring/splice.c

30 	struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
33 	sp->len = READ_ONCE(sqe->len);
34 	sp->flags = READ_ONCE(sqe->splice_flags);
35 	if (unlikely(sp->flags & ~valid_flags))
37 	sp->splice_fd_in = READ_ONCE(sqe->splice_fd_in);
38 	sp->rsrc_node = NULL;
52 	struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
54 	if (sp->rsrc_node)
55 		io_put_rsrc_node(req->ctx, sp->rsrc_node);
61 	struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
66 	if (!(sp->flags & SPLICE_F_FD_IN_FIXED))
67 		return io_file_get_normal(req, sp->splice_fd_in);
70 	node = io_rsrc_node_lookup(&ctx->file_table.data, sp->splice_fd_in);
73 		sp->rsrc_node = node;
83 	struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
84 	struct file *out = sp->file_out;
85 	unsigned int flags = sp->flags & ~SPLICE_F_FD_IN_FIXED;
97 	if (sp->len)
98 		ret = do_tee(in, out, sp->len, flags);
100 	if (!(sp->flags & SPLICE_F_FD_IN_FIXED))
103 	if (ret != sp->len)
111 	struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
113 	sp->off_in = READ_ONCE(sqe->splice_off_in);
114 	sp->off_out = READ_ONCE(sqe->off);
120 	struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
121 	struct file *out = sp->file_out;
122 	unsigned int flags = sp->flags & ~SPLICE_F_FD_IN_FIXED;
135 	poff_in = (sp->off_in == -1) ? NULL : &sp->off_in;
136 	poff_out = (sp->off_out == -1) ? NULL : &sp->off_out;
138 	if (sp->len)
139 		ret = do_splice(in, poff_in, out, poff_out, sp->len, flags);
141 	if (!(sp->flags & SPLICE_F_FD_IN_FIXED))
144 	if (ret != sp->len)