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);
38 int io_sync_file_range(struct io_kiocb *req, unsigned int issue_flags)
40 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
43 /* sync_file_range always requires a blocking context */
44 if (issue_flags & IO_URING_F_NONBLOCK)
47 ret = sync_file_range(req->file, sync->off, sync->len, sync->flags);
48 io_req_set_res(req, ret, 0);
52 int io_fsync_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
54 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
56 if (unlikely(sqe->addr || sqe->buf_index || sqe->splice_fd_in))
59 sync->flags = READ_ONCE(sqe->fsync_flags);
60 if (unlikely(sync->flags & ~IORING_FSYNC_DATASYNC))
63 sync->off = READ_ONCE(sqe->off);
64 sync->len = READ_ONCE(sqe->len);
68 int io_fsync(struct io_kiocb *req, unsigned int issue_flags)
70 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
71 loff_t end = sync->off + sync->len;
74 /* fsync always requires a blocking context */
75 if (issue_flags & IO_URING_F_NONBLOCK)
78 ret = vfs_fsync_range(req->file, sync->off, end > 0 ? end : LLONG_MAX,
79 sync->flags & IORING_FSYNC_DATASYNC);
80 io_req_set_res(req, ret, 0);
84 int io_fallocate_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
86 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
88 if (sqe->buf_index || sqe->rw_flags || sqe->splice_fd_in)
91 sync->off = READ_ONCE(sqe->off);
92 sync->len = READ_ONCE(sqe->addr);
93 sync->mode = READ_ONCE(sqe->len);
97 int io_fallocate(struct io_kiocb *req, unsigned int issue_flags)
99 struct io_sync *sync = io_kiocb_to_cmd(req, struct io_sync);
102 /* fallocate always requiring blocking context */
103 if (issue_flags & IO_URING_F_NONBLOCK)
105 ret = vfs_fallocate(req->file, sync->mode, sync->off, sync->len);
107 fsnotify_modify(req->file);
108 io_req_set_res(req, ret, 0);