Crate arcbox_virtio_fs 

VirtIO filesystem device (virtio-fs).

This implements the high-performance shared filesystem using virtiofs protocol for host-guest file sharing.

Architecture

Guest Driver (virtio-fs)
      │
      ▼ (virtqueue)
┌─────────────────────────┐
│      VirtioFs           │
│  ┌─────────────────┐   │
│  │   FuseSession   │   │
│  │  - INIT state   │   │
│  │  - features     │   │
│  └─────────────────┘   │
└───────────┬─────────────┘
            │ dispatch
            ▼
    FuseRequestHandler
      (implemented by arcbox-fs)

Module layout

• protocol: FUSE wire-protocol constants
• request: FuseRequest / FuseResponse envelopes
• session: FuseSession — INIT handshake + negotiated state
• handler: FuseRequestHandler trait
• device: FsConfig, VirtioFs, VirtioDevice impl

Structs

FsConfig

Filesystem device configuration.

FuseRequest

FUSE request from guest.

FuseResponse

FUSE response to guest.

FuseSession

FUSE session state.

VirtioFs

VirtIO filesystem device.

Constants

DEFAULT_MAX_PAGES

Default max pages per request.

DEFAULT_MAX_READAHEAD

Default max readahead size (128 KB).

DEFAULT_MAX_WRITE

Default max write size (128 KB).

FUSE_ASYNC_READ

FUSE_BIG_WRITES

FUSE_CACHE_SYMLINKS

FUSE_KERNEL_MINOR_VERSION

FUSE kernel protocol minor version.

FUSE_KERNEL_VERSION

FUSE kernel protocol major version.

FUSE_MAP_ALIGNMENT

FUSE_PARALLEL_DIROPS

FUSE_WRITEBACK_CACHE

Traits

FuseRequestHandler

Trait for handling FUSE requests.