Merge #2559

2559: Implement wasi dir path rename r=syrusakbary a=bnjjj

# Description
Related to #2557 

I also add command to wasi-test-generator to generate only for specific tests and not always for all tests.


Co-authored-by: Syrus Akbary <me@syrusakbary.com>
Co-authored-by: Benjamin Coenen <5719034+bnjjj@users.noreply.github.com>
Co-authored-by: Coenen Benjamin <benjamin.coenen@hotmail.com>

Cargo.toml

@@ -22,6 +22,7 @@ wasmer-engine-dylib = { version = "2.0.0", path = "lib/engine-dylib", optional =
 wasmer-engine-staticlib = { version = "2.0.0", path = "lib/engine-staticlib", optional = true }
 wasmer-wasi = { version = "2.0.0", path = "lib/wasi", optional = true }
 wasmer-wast = { version = "2.0.0", path = "tests/lib/wast", optional = true }
+wasi-test-generator = { version = "2.0.0", path = "tests/wasi-wast", optional = true }
 wasmer-cache = { version = "2.0.0", path = "lib/cache", optional = true }
 wasmer-types = { version = "2.0.0", path = "lib/types" }
 wasmer-middlewares = { version = "2.0.0", path = "lib/middlewares", optional = true }
@@ -50,6 +51,7 @@ members = [
     "lib/wasi-types",
     "lib/wasi-experimental-io-devices",
     "lib/types",
+    "tests/wasi-wast",
     "tests/lib/wast",
     "tests/lib/compiler-test-derive",
     "tests/integration/cli",

Makefile

@@ -564,6 +564,9 @@ test-capi-integration-%:
 test-wasi-unit:
 	cargo test --manifest-path lib/wasi/Cargo.toml --release
 
+test-wasi:
+	cargo test --release --tests $(compiler_features) -- wasi::wasitests
+
 test-examples:
 	cargo test --release $(compiler_features) --features wasi --examples
 
@@ -573,6 +576,10 @@ test-integration:
 test-integration-ios:
 	cargo test -p wasmer-integration-tests-ios
 
+generate-wasi-tests:
+# Uncomment the following for installing the toolchain
+#   cargo run -p wasi-test-generator -- -s
+	cargo run -p wasi-test-generator -- -g
 #####
 #
 # Packaging.

lib/vfs/src/lib.rs

@@ -35,6 +35,7 @@ pub trait FileSystem: fmt::Debug + Send + Sync + 'static {
         self.metadata(path)
     }
     fn remove_file(&self, path: &Path) -> Result<()>;
+
     fn new_open_options(&self) -> OpenOptions;
 }
 

lib/wasi/src/syscalls/mod.rs

@@ -1990,7 +1990,7 @@ pub fn path_remove_directory(
         ),
     }
 
-    if state.fs_remove_dir(path_str).is_err() {
+    if state.fs_remove_dir(host_path_to_remove).is_err() {
         // reinsert to prevent FS from being in bad state
         if let Kind::Dir {
             ref mut entries, ..
@@ -2070,8 +2070,11 @@ pub fn path_rename(
             unreachable!("Fatal internal logic error: parent of inode is not a directory")
         }
     };
+
     let source_entry = match &mut state.fs.inodes[source_parent_inode].kind {
-        Kind::Dir { entries, .. } => wasi_try!(entries.remove(&source_entry_name), __WASI_EINVAL),
+        Kind::Dir { entries, .. } => {
+            wasi_try!(entries.remove(&source_entry_name), __WASI_EINVAL)
+        }
         Kind::Root { .. } => return __WASI_ENOTCAPABLE,
         Kind::Symlink { .. } | Kind::File { .. } | Kind::Buffer { .. } => {
             unreachable!("Fatal internal logic error: parent of inode is not a directory")
@@ -2107,7 +2110,15 @@ pub fn path_rename(
                 }
             }
         }
-        Kind::Dir { path, .. } => unimplemented!("wasi::path_rename on Directories"),
+        Kind::Dir { ref path, .. } => {
+            let cloned_path = path.clone();
+            if let Err(e) = state.fs_rename(cloned_path, &host_adjusted_target_path) {
+                return e;
+            }
+            if let Kind::Dir { path, .. } = &mut state.fs.inodes[source_entry].kind {
+                *path = host_adjusted_target_path;
+            }
+        }
         Kind::Buffer { .. } => {}
         Kind::Symlink { .. } => {}
         Kind::Root { .. } => unreachable!("The root can not be moved"),

tests/compilers/config.rs

@@ -125,7 +125,7 @@ impl Config {
                 self.add_middlewares(&mut compiler);
                 Box::new(compiler)
             }
-            #[allow(dead_code)]
+            #[allow(unreachable_patterns)]
             compiler => {
                 panic!(
                     "The {:?} Compiler is not enabled. Enable it via the features",

tests/wasi-wast/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "wasi-test-generator"
-version = "0.17.0"
+version = "2.0.0"
 description = "Tests for our WASI implementation"
 license = "MIT"
 authors = ["Wasmer Engineering Team <engineering@wasmer.io>"]

tests/wasi-wast/README.md

@@ -12,6 +12,9 @@ In order to run the test generator properly you will need:
 ## Usage
 
 ```
+Positional arguments:
+  free                    if you want to specify specific tests to generate
+
 Optional arguments:
   -a, --all-versions      Whether or not to do operations for all versions of WASI or just the latest.
   -g, --generate-wasm     Whether or not the Wasm will be generated.
@@ -26,6 +29,12 @@ cargo run -- -as # set up the toolchains for all targets
 cargo run -- -ag # generate the WASI tests for all targets
 ```
 
+If you want to generate specific tests (it's faster when you're developing) you can use this command:
+
+```bash
+cargo run -- -g fd_rename_path # If you want to run the test in fd_rename_path.rs
+```
+
 ## Updating in Wasmer
 
 Run

tests/wasi-wast/src/main.rs

@@ -14,6 +14,9 @@ use gumdrop::Options;
 
 #[derive(Debug, Options)]
 pub struct TestGenOptions {
+    /// if you want to specify specific tests to generate
+    #[options(free)]
+    free: Vec<String>,
     /// Whether or not to do operations for all versions of WASI or just the latest.
     all_versions: bool,
     /// Whether or not the Wasm will be generated.
@@ -48,6 +51,7 @@ fn main() {
 
     // Generate the WASI Wasm files
     if generate_wasm {
-        build(wasi_versions);
+        let specific_tests: Vec<&str> = opts.free.iter().map(|st| st.as_str()).collect();
+        build(wasi_versions, &specific_tests);
     }
 }

tests/wasi-wast/src/wasi_version.rs

@@ -16,7 +16,7 @@ impl WasiVersion {
     pub fn get_compiler_toolchain(&self) -> &'static str {
         match self {
             WasiVersion::Unstable => "nightly-2019-09-13",
-            WasiVersion::Snapshot1 => "nightly-2019-12-18",
+            WasiVersion::Snapshot1 => "1.53.0",
         }
     }
 

tests/wasi-wast/src/wasitests.rs

@@ -147,7 +147,6 @@ fn compile_wasm_for_version(
             .create(true)
             .open(&temp_wasi_rs_file_name)
             .unwrap();
-        actual_file.write_all(b"#![feature(wasi_ext)]\n").unwrap();
         actual_file.write_all(file_contents.as_bytes()).unwrap();
     }
 
@@ -246,13 +245,21 @@ fn compile(temp_dir: &Path, file: &str, wasi_versions: &[WasiVersion]) {
 }
 
 const WASI_TEST_SRC_DIR: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/wasi/tests/*.rs");
-pub fn build(wasi_versions: &[WasiVersion]) {
+pub fn build(wasi_versions: &[WasiVersion], specific_tests: &[&str]) {
     let temp_dir = tempfile::TempDir::new().unwrap();
     for entry in glob(WASI_TEST_SRC_DIR).unwrap() {
         match entry {
             Ok(path) => {
                 let test = path.to_str().unwrap();
-                compile(temp_dir.path(), test, wasi_versions);
+                if !specific_tests.is_empty() {
+                    if let Some(filename) = path.file_stem().map(|f| f.to_str()).flatten() {
+                        if specific_tests.contains(&filename) {
+                            compile(temp_dir.path(), test, wasi_versions);
+                        }
+                    }
+                } else {
+                    compile(temp_dir.path(), test, wasi_versions);
+                }
             }
             Err(e) => println!("{:?}", e),
         }

tests/wasi-wast/wasi/snapshot1/fd_rename_path.wast

@@ -0,0 +1,6 @@
+;; This file was generated by https://github.com/wasmerio/wasi-tests
+
+(wasi_test "fd_rename_path.wasm"
+  (preopens "test_fs")
+  (assert_return (i64.const 0))
+)

tests/wasi-wast/wasi/tests/fd_rename_path.rs

@@ -0,0 +1,14 @@
+// WASI:
+// dir: test_fs
+
+use std::fs;
+use std::path::PathBuf;
+
+fn main() {
+    let old_path = PathBuf::from("test_fs/wasitests/dirtorename");
+    let new_path = PathBuf::from("test_fs/wasitests/dirrenamed");
+    fs::create_dir_all(&old_path).expect("cannot create the directory");
+
+    fs::rename(old_path, &new_path).expect("cannot rename the directory");
+    fs::remove_dir(&new_path).expect("cannot remove the directory");
+}