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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 ReplyState = ();
}
impl<'o> Operation<'o> for Read {
type RequestBody = &'o proto::ReadIn;
type ReplyState = ();
}
impl<'o> Operation<'o> for Write {
type RequestBody = (&'o proto::WriteIn, &'o [u8]);
type ReplyState = WriteState;
}
impl<'o> Operation<'o> for Flush {
type RequestBody = &'o proto::FlushIn;
type ReplyState = ();
}
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.state.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 }
}
}
|
