fuse_backend_rs/abi/
virtio_fs.rs

1// Copyright © 2019 Intel Corporation
2//
3// SPDX-License-Identifier: Apache-2.0
4
5//! Fuse extension protocol messages to support virtio-fs.
6
7#![allow(missing_docs)]
8
9use bitflags::bitflags;
10use vm_memory::ByteValued;
11
12bitflags! {
13    /// Flags for Setupmapping request.
14    pub struct SetupmappingFlags: u64 {
15        /// Mapping with write permission
16        const WRITE = 0x1;
17        /// Mapping with read permission
18        const READ = 0x2;
19    }
20}
21
22/// Setup file mapping request message for virtio-fs.
23#[repr(C)]
24#[derive(Debug, Default, Copy, Clone)]
25pub struct SetupmappingIn {
26    /// File handler.
27    pub fh: u64,
28    /// File offset.
29    pub foffset: u64,
30    /// Length to map.
31    pub len: u64,
32    /// Mapping flags
33    pub flags: u64,
34    /// Mapping offset in the DAX window.
35    pub moffset: u64,
36}
37
38unsafe impl ByteValued for SetupmappingIn {}
39
40/// Remove file mapping request message header for virtio-fs.
41#[repr(C)]
42#[derive(Debug, Default, Copy, Clone)]
43pub struct RemovemappingIn {
44    /// Number of `RemovemappingOne` entries in the message payload.
45    pub count: u32,
46}
47
48unsafe impl ByteValued for RemovemappingIn {}
49
50/// Remove file mapping request payload entry for virtio-fs.
51#[repr(C)]
52#[derive(Debug, Default, Copy, Clone)]
53pub struct RemovemappingOne {
54    /// Mapping offset in the DAX window.
55    pub moffset: u64,
56    /// Length to unmap.
57    pub len: u64,
58}
59
60unsafe impl ByteValued for RemovemappingOne {}
fuse_backend_rs/abi/virtio_fs.rs

fuse_backend_rs/abi/
virtio_fs.rs
