1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
use super::{
traits::{ReplyGather, ReplyOk, RequestData, RequestHandle, RequestOffset, RequestSize},
FromRequest,
};
use crate::{private_trait::Sealed, proto, Done, Operation, Reply, Request};
pub enum Readlink {}
pub enum Read {}
pub enum Write {}
pub enum Flush {}
pub struct WriteState {
size: u32,
}
pub trait ReplyAll<'o>: Operation<'o> {
fn all(reply: Reply<'o, Self>) -> Done<'o>;
}
impl Sealed for Readlink {}
impl Sealed for Read {}
impl Sealed for Write {}
impl Sealed for Flush {}
impl<'o> Operation<'o> for Readlink {
type RequestBody = ();
type ReplyTail = ();
}
impl<'o> Operation<'o> for Read {
type RequestBody = &'o proto::ReadIn;
type ReplyTail = ();
}
impl<'o> Operation<'o> for Write {
type RequestBody = (&'o proto::WriteIn, &'o [u8]);
type ReplyTail = WriteState;
}
impl<'o> Operation<'o> for Flush {
type RequestBody = &'o proto::FlushIn;
type ReplyTail = ();
}
impl<'o> ReplyGather<'o> for Readlink {}
impl<'o> RequestHandle<'o> for Read {
fn handle(request: &Request<'o, Self>) -> u64 {
request.body.fh
}
}
impl<'o> RequestOffset<'o> for Read {
fn offset(request: &Request<'o, Self>) -> u64 {
request.body.offset
}
}
impl<'o> RequestSize<'o> for Read {
fn size(request: &Request<'o, Self>) -> u32 {
request.body.size
}
}
impl<'o> ReplyGather<'o> for Read {}
impl<'o> RequestHandle<'o> for Write {
fn handle(request: &Request<'o, Self>) -> u64 {
request.body.0.fh
}
}
impl<'o> RequestOffset<'o> for Write {
fn offset(request: &Request<'o, Self>) -> u64 {
request.body.0.offset
}
}
impl<'o> RequestData<'o> for Write {
fn data<'a>(request: &'a Request<'o, Self>) -> &'a [u8] {
request.body.1
}
}
impl<'o> ReplyAll<'o> for Write {
fn all(reply: Reply<'o, Self>) -> Done<'o> {
let size = reply.tail.size;
reply.single(&proto::WriteOut {
size,
padding: Default::default(),
})
}
}
impl<'o> RequestHandle<'o> for Flush {
fn handle(request: &Request<'o, Self>) -> u64 {
request.body.fh
}
}
impl<'o> ReplyOk<'o> for Flush {}
impl<'o> FromRequest<'o, Write> for WriteState {
fn from_request(request: &Request<'o, Write>) -> Self {
let (body, data) = request.body;
if body.size as usize != data.len() {
log::warn!(
"Write size={} differs from data.len={}",
body.size,
data.len()
);
}
WriteState { size: body.size }
}
}
|
