Update to latest file_rpc

Cargo.lock

@@ -41,6 +41,26 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67ba02a97a2bd10f4b59b25c7973101c79642302776489e030cd13cdab09ed15"
 
+[[package]]
+name = "const_format"
+version = "0.2.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3a214c7af3d04997541b18d432afaff4c455e79e2029079647e72fc2bd27673"
+dependencies = [
+ "const_format_proc_macros",
+]
+
+[[package]]
+name = "const_format_proc_macros"
+version = "0.2.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7f6ff08fd20f4f299298a28e2dfa8a8ba1036e6cd2460ac1de7b425d76f2500"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
 [[package]]
 name = "critical-section"
 version = "1.1.2"
@@ -140,11 +160,24 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a55c51ee6c0db07e68448e336cf8ea4131a620edefebf9893e759b2d793420f8"
 dependencies = [
  "cobs",
+ "const_format",
  "embedded-io",
  "heapless",
+ "postcard-derive",
  "serde",
 ]
 
+[[package]]
+name = "postcard-derive"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc4b01218787dd4420daf63875163a787a78294ad48a24e9f6fa8c6507759a79"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.85"
@@ -210,7 +243,7 @@ checksum = "500cbc0ebeb6f46627f50f3f5811ccf6bf00643be300b4c3eabc0ef55dc5b5ba"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.66",
 ]
 
 [[package]]
@@ -234,6 +267,17 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 
+[[package]]
+name = "syn"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.66"
@@ -286,6 +330,12 @@ version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"
+
 [[package]]
 name = "vfs_rpc"
 version = "0.1.0"

Cargo.toml

@@ -10,3 +10,8 @@ parking_lot = "0.12.3"
 syslog_rpc = { version = "0.1.0", path = "../syslog/syslog_rpc" }
 tar = { version = "0.4.41", default-features = false, path = "tar-0.4.41" }
 vfs_rpc = { version = "0.1.0", path = "../vfs/vfs_rpc" }
+
+[profile.release]
+strip = true
+lto = true
+opt-level = "s"

src/main.rs

@@ -1,9 +1,5 @@
 use std::{
-    fs::File,
+    borrow::Cow, fs::File, io::{Read, Seek}, os::mikros::{ipc, syscalls}, path::PathBuf, sync::Arc
-    io::{Read, Seek},
-    os::mikros::{ipc, syscalls},
-    path::PathBuf,
-    sync::Arc,
 };
 
 use parking_lot::RwLock;
@@ -50,11 +46,11 @@ impl fs_rpc::Server for Serv {
 }
 
 impl file_rpc::Server for Serv {
-    fn read(&self, fd: u64, pos: u64, len: usize) -> Result<Vec<u8>, ()> {
+    fn read(&self, fd: u64, pos: u64, len: usize) -> Result<Cow<'_, [u8]>, ()> {
         let (mount_id, file_offset, size) = self.files.read()[fd as usize];
         let read_len = usize::min(len, size - (pos as usize));
         if read_len == 0 {
-            return Ok(Vec::new());
+            return Ok(Vec::new().into());
         };
         let mounts = self.mounts.read();
         let mount = &mounts[mount_id];
@@ -64,7 +60,7 @@ impl file_rpc::Server for Serv {
         let mut buf = vec![0; read_len];
         let read_bytes = (&mount.0).read(&mut buf).map_err(|_| ())?;
         buf.truncate(read_bytes);
-        Ok(buf)
+        Ok(buf.into())
     }
 
     fn write(&self, _fd: u64, _pos: u64, _data: &[u8]) -> Result<(), ()> {