// SPDX-License-Identifier: GPL-2.0#include <linux/kernel.h>#include <linux/errno.h>#include <linux/file.h>#include <linux/io_uring.h> #include <uapi/linux/io_uring.h> #include "../fs/internal.h" #include "io_uring.h"#include "statx.h" struct io_statx {	struct file			*file;	int				dfd;	unsigned int			mask;	unsigned int			flags;	struct filename			*filename;	struct statx __user		*buffer;}; int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe){	struct io_statx *sx = io_kiocb_to_cmd(req, struct io_statx);	const char __user *path; 	if (sqe->buf_index || sqe->splice_fd_in)		return -EINVAL;	if (req->flags & REQ_F_FIXED_FILE)		return -EBADF; 	sx->dfd = READ_ONCE(sqe->fd);	sx->mask = READ_ONCE(sqe->len);	path = u64_to_user_ptr(READ_ONCE(sqe->addr));	sx->buffer = u64_to_user_ptr(READ_ONCE(sqe->addr2));	sx->flags = READ_ONCE(sqe->statx_flags); 	sx->filename = getname_uflags(path, sx->flags); 	if (IS_ERR(sx->filename)) {		int ret = PTR_ERR(sx->filename); 		sx->filename = NULL;		return ret;	} 	req->flags |= REQ_F_NEED_CLEANUP;	req->flags |= REQ_F_FORCE_ASYNC;	return 0;} int io_statx(struct io_kiocb *req, unsigned int issue_flags){	struct io_statx *sx = io_kiocb_to_cmd(req, struct io_statx);	int ret; 	WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK); 	ret = do_statx(sx->dfd, sx->filename, sx->flags, sx->mask, sx->buffer);	io_req_set_res(req, ret, 0);	return IOU_OK;} void io_statx_cleanup(struct io_kiocb *req){	struct io_statx *sx = io_kiocb_to_cmd(req, struct io_statx); 	if (sx->filename)		putname(sx->filename);}