1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/kernel.h>
3 #include <linux/errno.h>
5 #include <linux/file.h>
7 #include <linux/slab.h>
8 #include <linux/namei.h>
9 #include <linux/io_uring.h>
10 #include <linux/fsnotify.h>
12 #include <uapi/linux/io_uring.h>
25 int io_sfr_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
27 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
29 if (unlikely(sqe->addr || sqe->buf_index || sqe->splice_fd_in))
32 sync->off = READ_ONCE(sqe->off);
33 sync->len = READ_ONCE(sqe->len);
34 sync->flags = READ_ONCE(sqe->sync_range_flags);
35 req->flags |= REQ_F_FORCE_ASYNC;
40 int io_sync_file_range(struct io_kiocb *req, unsigned int issue_flags)
42 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
45 /* sync_file_range always requires a blocking context */
46 WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK);
48 ret = sync_file_range(req->file, sync->off, sync->len, sync->flags);
49 io_req_set_res(req, ret, 0);
53 int io_fsync_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
55 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
57 if (unlikely(sqe->addr || sqe->buf_index || sqe->splice_fd_in))
60 sync->flags = READ_ONCE(sqe->fsync_flags);
61 if (unlikely(sync->flags & ~IORING_FSYNC_DATASYNC))
64 sync->off = READ_ONCE(sqe->off);
65 sync->len = READ_ONCE(sqe->len);
66 req->flags |= REQ_F_FORCE_ASYNC;
70 int io_fsync(struct io_kiocb *req, unsigned int issue_flags)
72 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
73 loff_t end = sync->off + sync->len;
76 /* fsync always requires a blocking context */
77 WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK);
79 ret = vfs_fsync_range(req->file, sync->off, end > 0 ? end : LLONG_MAX,
80 sync->flags & IORING_FSYNC_DATASYNC);
81 io_req_set_res(req, ret, 0);
85 int io_fallocate_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
87 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
89 if (sqe->buf_index || sqe->rw_flags || sqe->splice_fd_in)
92 sync->off = READ_ONCE(sqe->off);
93 sync->len = READ_ONCE(sqe->addr);
94 sync->mode = READ_ONCE(sqe->len);
95 req->flags |= REQ_F_FORCE_ASYNC;
99 int io_fallocate(struct io_kiocb *req, unsigned int issue_flags)
101 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
104 /* fallocate always requiring blocking context */
105 WARN_ON_ONCE(issue_flags & IO_URING_F_NONBLOCK);
107 ret = vfs_fallocate(req->file, sync->mode, sync->off, sync->len);
109 fsnotify_modify(req->file);
110 io_req_set_res(req, ret, 0);