Server implemented. Linux client implemented.

furumi-common/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "furumi-common"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+prost = "0.13.5"
+tonic = "0.12.3"
+
+[build-dependencies]
+protobuf-src = "2.1.1"
+tonic-build = "0.12.3"

furumi-common/build.rs

@@ -0,0 +1,12 @@
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    println!("cargo:rerun-if-changed=proto/virtualfs.proto");
+    unsafe {
+        std::env::set_var("PROTOC", protobuf_src::protoc());
+    }
+    
+    tonic_build::configure()
+        .build_server(true)
+        .build_client(true)
+        .compile_protos(&["proto/virtualfs.proto"], &["proto"])?;
+    Ok(())
+}

furumi-common/proto/virtualfs.proto

@@ -0,0 +1,41 @@
+syntax = "proto3";
+package virtualfs;
+
+message PathRequest {
+  string path = 1;
+}
+
+message AttrResponse {
+  uint64 size = 1;
+  uint32 mode = 2; // Permissions and file type
+  uint64 mtime = 3; // Modification time
+  // ... other standard stat attributes
+}
+
+message DirEntry {
+  string name = 1;
+  uint32 type = 2; // File or Directory, mapping roughly to libc::DT_REG, libc::DT_DIR, etc.
+}
+
+message ReadRequest {
+  string path = 1;
+  uint64 offset = 2;
+  uint32 size = 3;
+  // Optional requested chunk size. If 0, the server uses its default chunk size.
+  uint32 chunk_size = 4;
+}
+
+message FileChunk {
+  bytes data = 1;
+}
+
+service RemoteFileSystem {
+  // Get file or directory attributes (size, permissions, timestamps). Maps to stat/getattr.
+  rpc GetAttr (PathRequest) returns (AttrResponse);
+  
+  // List directory contents. Uses Server Streaming to handle massively large directories efficiently.
+  rpc ReadDir (PathRequest) returns (stream DirEntry);
+  
+  // Read chunks of a file. Uses Server Streaming for efficient chunk delivery based on offset/size.
+  rpc ReadFile (ReadRequest) returns (stream FileChunk);
+}

furumi-common/src/lib.rs

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+pub mod proto {
+    tonic::include_proto!("virtualfs");
+}