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use crate::{
io::{AccessFlags, OpenFlags},
private_trait::Sealed,
proto, Done, Errno, Operation, Reply, Request,
};
use super::{traits::ReplyOk, FromRequest};
pub enum Open {}
pub enum Release {}
pub enum Opendir {}
pub enum Releasedir {}
pub enum Access {}
pub trait ReplyOpen<'o>: ReplyOk<'o, ReplyTail = proto::OpenOutFlags> {
fn ok_with_handle(reply: Reply<'o, Self>, handle: u64) -> Done<'o> {
let open_flags = reply.tail.bits();
reply.single(&proto::OpenOut {
fh: handle,
open_flags,
padding: Default::default(),
})
}
fn force_direct_io(reply: &mut Reply<'o, Self>) {
reply.tail |= proto::OpenOutFlags::DIRECT_IO;
}
}
pub trait ReplyPermissionDenied<'o>: Operation<'o> {
fn permission_denied(reply: Reply<'o, Self>) -> Done<'o> {
reply.fail(Errno::EACCES)
}
}
impl Sealed for Open {}
impl Sealed for Release {}
impl Sealed for Opendir {}
impl Sealed for Releasedir {}
impl Sealed for Access {}
impl<'o> Operation<'o> for Open {
type RequestBody = &'o proto::OpenIn;
type ReplyTail = proto::OpenOutFlags;
}
impl<'o> Operation<'o> for Release {
type RequestBody = &'o proto::ReleaseIn;
type ReplyTail = ();
}
impl<'o> Operation<'o> for Opendir {
type RequestBody = &'o proto::OpendirIn;
type ReplyTail = proto::OpenOutFlags;
}
impl<'o> Operation<'o> for Releasedir {
type RequestBody = &'o proto::ReleasedirIn;
type ReplyTail = ();
}
impl<'o> Operation<'o> for Access {
type RequestBody = &'o proto::AccessIn;
type ReplyTail = ();
}
impl<'o> Request<'o, Open> {
pub fn flags(&self) -> OpenFlags {
OpenFlags::from_bits_truncate(self.body.flags.try_into().unwrap_or_default())
}
}
impl<'o> ReplyOk<'o> for Open {
fn ok(reply: Reply<'o, Self>) -> Done<'o> {
reply.ok_with_handle(0)
}
}
impl<'o> ReplyOpen<'o> for Open {}
impl<'o> ReplyPermissionDenied<'o> for Open {}
impl<'o> Request<'o, Release> {
pub fn handle(&self) -> u64 {
self.body.fh
}
}
impl<'o> ReplyOk<'o> for Release {}
impl<'o> ReplyOk<'o> for Opendir {
fn ok(reply: Reply<'o, Self>) -> Done<'o> {
reply.ok_with_handle(0)
}
}
impl<'o> ReplyPermissionDenied<'o> for Opendir {}
impl<'o> ReplyOpen<'o> for Opendir {}
impl<'o> Request<'o, Releasedir> {
pub fn handle(&self) -> u64 {
self.body.release_in.fh
}
}
impl<'o> ReplyOk<'o> for Releasedir {}
impl<'o> Request<'o, Access> {
pub fn mask(&self) -> AccessFlags {
AccessFlags::from_bits_truncate(self.body.mask as i32)
}
}
impl<'o> ReplyOk<'o> for Access {}
impl<'o> ReplyPermissionDenied<'o> for Access {}
impl<'o, O: ReplyOpen<'o>> FromRequest<'o, O> for proto::OpenOutFlags {
fn from_request(_request: &Request<'o, O>) -> Self {
proto::OpenOutFlags::empty()
}
}
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