Module fuse_backend_rs::api::server

Fuse API Server to interconnect transport layers with filesystem drivers.

The Fuse API server is a adapter layer between transport layers and file system drivers. The main functionalities of the Fuse API server is:

• Support different types of transport layers, fusedev, virtio-fs or vhost-user-fs.
• Hide different transport layers details from file system drivers.
• Parse transport messages according to the Fuse ABI to avoid duplicated message decoding in every file system driver.
• Invoke file system driver handler to serve each request and send the reply.

The Fuse API server is performance critical, so it’s designed to support multi-threading by adopting interior-mutability. And the arcswap crate is used to implement interior-mutability.

Structs

• Server
  Fuse Server to handle requests from the Fuse client and vhost user master.

Constants

• MAX_BUFFER_SIZE
  Maximum buffer size of FUSE requests.
• MAX_REQ_PAGES
  Maximum number of pages required for FUSE requests.

Traits

• MetricsHook
  Provide concrete backend filesystem a way to catch information/metrics from fuse.