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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869// 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 delayed_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; int ret;
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);
ret = delayed_getname_uflags(&sx->filename, path, sx->flags);
if (unlikely(ret)) 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); CLASS(filename_complete_delayed, name)(&sx->filename); int ret;
WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK);
ret = do_statx(sx->dfd, name, sx->flags, sx->mask, sx->buffer); io_req_set_res(req, ret, 0); return IOU_COMPLETE;}
void io_statx_cleanup(struct io_kiocb *req){ struct io_statx *sx = io_kiocb_to_cmd(req, struct io_statx);
dismiss_delayed_filename(&sx->filename);}