use bstr::ByteSlice; use bytes::Bytes; use std::{ collections::BTreeMap, ffi::{OsStr, OsString}, io::{self, Cursor}, os::unix::{ffi::OsStrExt, fs::MetadataExt}, path::Path, sync::Arc, }; use tempfile::TempDir; use tokio_stream::{wrappers::ReadDirStream, StreamExt}; use super::{fuse::FuseDaemon, TvixStoreFs}; use crate::proto as castorepb; use crate::proto::node::Node; use crate::{ blobservice::{BlobService, MemoryBlobService}, directoryservice::{DirectoryService, MemoryDirectoryService}, fixtures, }; const BLOB_A_NAME: &str = "00000000000000000000000000000000-test"; const BLOB_B_NAME: &str = "55555555555555555555555555555555-test"; const HELLOWORLD_BLOB_NAME: &str = "66666666666666666666666666666666-test"; const SYMLINK_NAME: &str = "11111111111111111111111111111111-test"; const SYMLINK_NAME2: &str = "44444444444444444444444444444444-test"; const DIRECTORY_WITH_KEEP_NAME: &str = "22222222222222222222222222222222-test"; const DIRECTORY_COMPLICATED_NAME: &str = "33333333333333333333333333333333-test"; fn gen_svcs() -> (Arc, Arc) { ( Arc::new(MemoryBlobService::default()) as Arc, Arc::new(MemoryDirectoryService::default()) as Arc, ) } fn do_mount, BS, DS>( blob_service: BS, directory_service: DS, root_nodes: BTreeMap, mountpoint: P, list_root: bool, show_xattr: bool, ) -> io::Result where BS: AsRef + Send + Sync + Clone + 'static, DS: AsRef + Send + Sync + Clone + 'static, { let fs = TvixStoreFs::new( blob_service, directory_service, Arc::new(root_nodes), list_root, show_xattr, ); FuseDaemon::new(Arc::new(fs), mountpoint.as_ref(), 4, false) } async fn populate_blob_a( blob_service: &Arc, root_nodes: &mut BTreeMap, ) { let mut bw = blob_service.open_write().await; tokio::io::copy(&mut Cursor::new(fixtures::BLOB_A.to_vec()), &mut bw) .await .expect("must succeed uploading"); bw.close().await.expect("must succeed closing"); root_nodes.insert( BLOB_A_NAME.into(), Node::File(castorepb::FileNode { name: BLOB_A_NAME.into(), digest: fixtures::BLOB_A_DIGEST.clone().into(), size: fixtures::BLOB_A.len() as u64, executable: false, }), ); } async fn populate_blob_b( blob_service: &Arc, root_nodes: &mut BTreeMap, ) { let mut bw = blob_service.open_write().await; tokio::io::copy(&mut Cursor::new(fixtures::BLOB_B.to_vec()), &mut bw) .await .expect("must succeed uploading"); bw.close().await.expect("must succeed closing"); root_nodes.insert( BLOB_B_NAME.into(), Node::File(castorepb::FileNode { name: BLOB_B_NAME.into(), digest: fixtures::BLOB_B_DIGEST.clone().into(), size: fixtures::BLOB_B.len() as u64, executable: false, }), ); } /// adds a blob containing helloworld and marks it as executable async fn populate_blob_helloworld( blob_service: &Arc, root_nodes: &mut BTreeMap, ) { let mut bw = blob_service.open_write().await; tokio::io::copy( &mut Cursor::new(fixtures::HELLOWORLD_BLOB_CONTENTS.to_vec()), &mut bw, ) .await .expect("must succeed uploading"); bw.close().await.expect("must succeed closing"); root_nodes.insert( HELLOWORLD_BLOB_NAME.into(), Node::File(castorepb::FileNode { name: HELLOWORLD_BLOB_NAME.into(), digest: fixtures::HELLOWORLD_BLOB_DIGEST.clone().into(), size: fixtures::HELLOWORLD_BLOB_CONTENTS.len() as u64, executable: true, }), ); } async fn populate_symlink(root_nodes: &mut BTreeMap) { root_nodes.insert( SYMLINK_NAME.into(), Node::Symlink(castorepb::SymlinkNode { name: SYMLINK_NAME.into(), target: BLOB_A_NAME.into(), }), ); } /// This writes a symlink pointing to /nix/store/somewhereelse, /// which is the same symlink target as "aa" inside DIRECTORY_COMPLICATED. async fn populate_symlink2(root_nodes: &mut BTreeMap) { root_nodes.insert( SYMLINK_NAME2.into(), Node::Symlink(castorepb::SymlinkNode { name: SYMLINK_NAME2.into(), target: "/nix/store/somewhereelse".into(), }), ); } async fn populate_directory_with_keep( blob_service: &Arc, directory_service: &Arc, root_nodes: &mut BTreeMap, ) { // upload empty blob let mut bw = blob_service.open_write().await; assert_eq!( fixtures::EMPTY_BLOB_DIGEST.as_slice(), bw.close().await.expect("must succeed closing").as_slice(), ); // upload directory directory_service .put(fixtures::DIRECTORY_WITH_KEEP.clone()) .await .expect("must succeed uploading"); root_nodes.insert( DIRECTORY_WITH_KEEP_NAME.into(), castorepb::node::Node::Directory(castorepb::DirectoryNode { name: DIRECTORY_WITH_KEEP_NAME.into(), digest: fixtures::DIRECTORY_WITH_KEEP.digest().into(), size: fixtures::DIRECTORY_WITH_KEEP.size(), }), ); } /// Create a root node for DIRECTORY_WITH_KEEP, but don't upload the Directory /// itself. async fn populate_directorynode_without_directory(root_nodes: &mut BTreeMap) { root_nodes.insert( DIRECTORY_WITH_KEEP_NAME.into(), castorepb::node::Node::Directory(castorepb::DirectoryNode { name: DIRECTORY_WITH_KEEP_NAME.into(), digest: fixtures::DIRECTORY_WITH_KEEP.digest().into(), size: fixtures::DIRECTORY_WITH_KEEP.size(), }), ); } /// Insert BLOB_A, but don't provide the blob .keep is pointing to. async fn populate_filenode_without_blob(root_nodes: &mut BTreeMap) { root_nodes.insert( BLOB_A_NAME.into(), Node::File(castorepb::FileNode { name: BLOB_A_NAME.into(), digest: fixtures::BLOB_A_DIGEST.clone().into(), size: fixtures::BLOB_A.len() as u64, executable: false, }), ); } async fn populate_directory_complicated( blob_service: &Arc, directory_service: &Arc, root_nodes: &mut BTreeMap, ) { // upload empty blob let mut bw = blob_service.open_write().await; assert_eq!( fixtures::EMPTY_BLOB_DIGEST.as_slice(), bw.close().await.expect("must succeed closing").as_slice(), ); // upload inner directory directory_service .put(fixtures::DIRECTORY_WITH_KEEP.clone()) .await .expect("must succeed uploading"); // upload parent directory directory_service .put(fixtures::DIRECTORY_COMPLICATED.clone()) .await .expect("must succeed uploading"); root_nodes.insert( DIRECTORY_COMPLICATED_NAME.into(), Node::Directory(castorepb::DirectoryNode { name: DIRECTORY_COMPLICATED_NAME.into(), digest: fixtures::DIRECTORY_COMPLICATED.digest().into(), size: fixtures::DIRECTORY_COMPLICATED.size(), }), ); } /// Ensure mounting itself doesn't fail #[tokio::test] async fn mount() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut fuse_daemon = do_mount( blob_service, directory_service, BTreeMap::default(), tmpdir.path(), false, false, ) .expect("must succeed"); fuse_daemon.unmount().expect("unmount"); } /// Ensure listing the root isn't allowed #[tokio::test] async fn root() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut fuse_daemon = do_mount( blob_service, directory_service, BTreeMap::default(), tmpdir.path(), false, false, ) .expect("must succeed"); { // read_dir fails (as opendir fails). let err = tokio::fs::read_dir(tmpdir).await.expect_err("must fail"); assert_eq!(std::io::ErrorKind::PermissionDenied, err.kind()); } fuse_daemon.unmount().expect("unmount"); } /// Ensure listing the root is allowed if configured explicitly #[tokio::test(flavor = "multi_thread", worker_threads = 2)] async fn root_with_listing() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_blob_a(&blob_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), true, /* allow listing */ false, ) .expect("must succeed"); { // read_dir succeeds, but getting the first element will fail. let mut it = ReadDirStream::new(tokio::fs::read_dir(tmpdir).await.expect("must succeed")); let e = it .next() .await .expect("must be some") .expect("must succeed"); let metadata = e.metadata().await.expect("must succeed"); assert!(metadata.is_file()); assert!(metadata.permissions().readonly()); assert_eq!(fixtures::BLOB_A.len() as u64, metadata.len()); } fuse_daemon.unmount().expect("unmount"); } /// Ensure we can stat a file at the root #[tokio::test] async fn stat_file_at_root() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_blob_a(&blob_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(BLOB_A_NAME); // peek at the file metadata let metadata = tokio::fs::metadata(p).await.expect("must succeed"); assert!(metadata.is_file()); assert!(metadata.permissions().readonly()); assert_eq!(fixtures::BLOB_A.len() as u64, metadata.len()); fuse_daemon.unmount().expect("unmount"); } /// Ensure we can read a file at the root #[tokio::test(flavor = "multi_thread", worker_threads = 2)] async fn read_file_at_root() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_blob_a(&blob_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(BLOB_A_NAME); // read the file contents let data = tokio::fs::read(p).await.expect("must succeed"); // ensure size and contents match assert_eq!(fixtures::BLOB_A.len(), data.len()); assert_eq!(fixtures::BLOB_A.to_vec(), data); fuse_daemon.unmount().expect("unmount"); } /// Ensure we can read a large file at the root #[tokio::test(flavor = "multi_thread", worker_threads = 2)] async fn read_large_file_at_root() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_blob_b(&blob_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(BLOB_B_NAME); { // peek at the file metadata let metadata = tokio::fs::metadata(&p).await.expect("must succeed"); assert!(metadata.is_file()); assert!(metadata.permissions().readonly()); assert_eq!(fixtures::BLOB_B.len() as u64, metadata.len()); } // read the file contents let data = tokio::fs::read(p).await.expect("must succeed"); // ensure size and contents match assert_eq!(fixtures::BLOB_B.len(), data.len()); assert_eq!(fixtures::BLOB_B.to_vec(), data); fuse_daemon.unmount().expect("unmount"); } /// Read the target of a symlink #[tokio::test] async fn symlink_readlink() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_symlink(&mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(SYMLINK_NAME); let target = tokio::fs::read_link(&p).await.expect("must succeed"); assert_eq!(BLOB_A_NAME, target.to_str().unwrap()); // peek at the file metadata, which follows symlinks. // this must fail, as we didn't populate the target. let e = tokio::fs::metadata(&p).await.expect_err("must fail"); assert_eq!(std::io::ErrorKind::NotFound, e.kind()); // peeking at the file metadata without following symlinks will succeed. let metadata = tokio::fs::symlink_metadata(&p).await.expect("must succeed"); assert!(metadata.is_symlink()); // reading from the symlink (which follows) will fail, because the target doesn't exist. let e = tokio::fs::read(p).await.expect_err("must fail"); assert_eq!(std::io::ErrorKind::NotFound, e.kind()); fuse_daemon.unmount().expect("unmount"); } /// Read and stat a regular file through a symlink pointing to it. #[tokio::test(flavor = "multi_thread", worker_threads = 2)] async fn read_stat_through_symlink() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_blob_a(&blob_service, &mut root_nodes).await; populate_symlink(&mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p_symlink = tmpdir.path().join(SYMLINK_NAME); let p_blob = tmpdir.path().join(SYMLINK_NAME); // peek at the file metadata, which follows symlinks. // this must now return the same metadata as when statting at the target directly. let metadata_symlink = tokio::fs::metadata(&p_symlink).await.expect("must succeed"); let metadata_blob = tokio::fs::metadata(&p_blob).await.expect("must succeed"); assert_eq!(metadata_blob.file_type(), metadata_symlink.file_type()); assert_eq!(metadata_blob.len(), metadata_symlink.len()); // reading from the symlink (which follows) will return the same data as if // we were reading from the file directly. assert_eq!( tokio::fs::read(p_blob).await.expect("must succeed"), tokio::fs::read(p_symlink).await.expect("must succeed"), ); fuse_daemon.unmount().expect("unmount"); } /// Read a directory in the root, and validate some attributes. #[tokio::test] async fn read_stat_directory() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_with_keep(&blob_service, &directory_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(DIRECTORY_WITH_KEEP_NAME); // peek at the metadata of the directory let metadata = tokio::fs::metadata(p).await.expect("must succeed"); assert!(metadata.is_dir()); assert!(metadata.permissions().readonly()); fuse_daemon.unmount().expect("unmount"); } /// Read a directory and file in the root, and ensure the xattrs expose blob or /// directory digests. #[tokio::test] async fn xattr() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_with_keep(&blob_service, &directory_service, &mut root_nodes).await; populate_blob_a(&blob_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, true, /* support xattr */ ) .expect("must succeed"); // peek at the directory { let p = tmpdir.path().join(DIRECTORY_WITH_KEEP_NAME); let xattr_names: Vec = xattr::list(&p).expect("must succeed").collect(); // There should be 1 key, XATTR_NAME_DIRECTORY_DIGEST. assert_eq!(1, xattr_names.len(), "there should be 1 xattr name"); assert_eq!( super::XATTR_NAME_DIRECTORY_DIGEST, xattr_names.first().unwrap().as_encoded_bytes() ); // The key should equal to the string-formatted b3 digest. let val = xattr::get(&p, OsStr::from_bytes(super::XATTR_NAME_DIRECTORY_DIGEST)) .expect("must succeed") .expect("must be some"); assert_eq!( fixtures::DIRECTORY_WITH_KEEP .digest() .to_string() .as_bytes() .as_bstr(), val.as_bstr() ); // Reading another xattr key is gonna return None. let val = xattr::get(&p, OsStr::from_bytes(b"user.cheesecake")).expect("must succeed"); assert_eq!(None, val); } // peek at the file { let p = tmpdir.path().join(BLOB_A_NAME); let xattr_names: Vec = xattr::list(&p).expect("must succeed").collect(); // There should be 1 key, XATTR_NAME_BLOB_DIGEST. assert_eq!(1, xattr_names.len(), "there should be 1 xattr name"); assert_eq!( super::XATTR_NAME_BLOB_DIGEST, xattr_names.first().unwrap().as_encoded_bytes() ); // The key should equal to the string-formatted b3 digest. let val = xattr::get(&p, OsStr::from_bytes(super::XATTR_NAME_BLOB_DIGEST)) .expect("must succeed") .expect("must be some"); assert_eq!( fixtures::BLOB_A_DIGEST.to_string().as_bytes().as_bstr(), val.as_bstr() ); // Reading another xattr key is gonna return None. let val = xattr::get(&p, OsStr::from_bytes(b"user.cheesecake")).expect("must succeed"); assert_eq!(None, val); } fuse_daemon.unmount().expect("unmount"); } #[tokio::test(flavor = "multi_thread", worker_threads = 2)] /// Read a blob inside a directory. This ensures we successfully populate directory data. async fn read_blob_inside_dir() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_with_keep(&blob_service, &directory_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(DIRECTORY_WITH_KEEP_NAME).join(".keep"); // peek at metadata. let metadata = tokio::fs::metadata(&p).await.expect("must succeed"); assert!(metadata.is_file()); assert!(metadata.permissions().readonly()); // read from it let data = tokio::fs::read(&p).await.expect("must succeed"); assert_eq!(fixtures::EMPTY_BLOB_CONTENTS.to_vec(), data); fuse_daemon.unmount().expect("unmount"); } #[tokio::test(flavor = "multi_thread", worker_threads = 2)] /// Read a blob inside a directory inside a directory. This ensures we properly /// populate directories as we traverse down the structure. async fn read_blob_deep_inside_dir() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_complicated(&blob_service, &directory_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir .path() .join(DIRECTORY_COMPLICATED_NAME) .join("keep") .join(".keep"); // peek at metadata. let metadata = tokio::fs::metadata(&p).await.expect("must succeed"); assert!(metadata.is_file()); assert!(metadata.permissions().readonly()); // read from it let data = tokio::fs::read(&p).await.expect("must succeed"); assert_eq!(fixtures::EMPTY_BLOB_CONTENTS.to_vec(), data); fuse_daemon.unmount().expect("unmount"); } /// Ensure readdir works. #[tokio::test] async fn readdir() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_complicated(&blob_service, &directory_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(DIRECTORY_COMPLICATED_NAME); { // read_dir should succeed. Collect all elements let elements: Vec<_> = ReadDirStream::new(tokio::fs::read_dir(p).await.expect("must succeed")) .map(|e| e.expect("must not be err")) .collect() .await; assert_eq!(3, elements.len(), "number of elements should be 3"); // rust skips . and .. // We explicitly look at specific positions here, because we always emit // them ordered. // ".keep", 0 byte file. let e = &elements[0]; assert_eq!(".keep", e.file_name()); assert!(e.file_type().await.expect("must succeed").is_file()); assert_eq!(0, e.metadata().await.expect("must succeed").len()); // "aa", symlink. let e = &elements[1]; assert_eq!("aa", e.file_name()); assert!(e.file_type().await.expect("must succeed").is_symlink()); // "keep", directory let e = &elements[2]; assert_eq!("keep", e.file_name()); assert!(e.file_type().await.expect("must succeed").is_dir()); } fuse_daemon.unmount().expect("unmount"); } #[tokio::test] /// Do a readdir deeper inside a directory, without doing readdir or stat in the parent directory. async fn readdir_deep() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_complicated(&blob_service, &directory_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(DIRECTORY_COMPLICATED_NAME).join("keep"); { // read_dir should succeed. Collect all elements let elements: Vec<_> = ReadDirStream::new(tokio::fs::read_dir(p).await.expect("must succeed")) .map(|e| e.expect("must not be err")) .collect() .await; assert_eq!(1, elements.len(), "number of elements should be 1"); // rust skips . and .. // ".keep", 0 byte file. let e = &elements[0]; assert_eq!(".keep", e.file_name()); assert!(e.file_type().await.expect("must succeed").is_file()); assert_eq!(0, e.metadata().await.expect("must succeed").len()); } fuse_daemon.unmount().expect("unmount"); } /// Check attributes match how they show up in /nix/store normally. #[tokio::test] async fn check_attributes() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_blob_a(&blob_service, &mut root_nodes).await; populate_directory_with_keep(&blob_service, &directory_service, &mut root_nodes).await; populate_symlink(&mut root_nodes).await; populate_blob_helloworld(&blob_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p_file = tmpdir.path().join(BLOB_A_NAME); let p_directory = tmpdir.path().join(DIRECTORY_WITH_KEEP_NAME); let p_symlink = tmpdir.path().join(SYMLINK_NAME); let p_executable_file = tmpdir.path().join(HELLOWORLD_BLOB_NAME); // peek at metadata. We use symlink_metadata to ensure we don't traverse a symlink by accident. let metadata_file = tokio::fs::symlink_metadata(&p_file) .await .expect("must succeed"); let metadata_executable_file = tokio::fs::symlink_metadata(&p_executable_file) .await .expect("must succeed"); let metadata_directory = tokio::fs::symlink_metadata(&p_directory) .await .expect("must succeed"); let metadata_symlink = tokio::fs::symlink_metadata(&p_symlink) .await .expect("must succeed"); // modes should match. We & with 0o777 to remove any higher bits. assert_eq!(0o444, metadata_file.mode() & 0o777); assert_eq!(0o555, metadata_executable_file.mode() & 0o777); assert_eq!(0o555, metadata_directory.mode() & 0o777); assert_eq!(0o444, metadata_symlink.mode() & 0o777); // files should have the correct filesize assert_eq!(fixtures::BLOB_A.len() as u64, metadata_file.len()); // directories should have their "size" as filesize assert_eq!( { fixtures::DIRECTORY_WITH_KEEP.size() }, metadata_directory.size() ); for metadata in &[&metadata_file, &metadata_directory, &metadata_symlink] { // uid and gid should be 0. assert_eq!(0, metadata.uid()); assert_eq!(0, metadata.gid()); // all times should be set to the unix epoch. assert_eq!(0, metadata.atime()); assert_eq!(0, metadata.mtime()); assert_eq!(0, metadata.ctime()); // crtime seems MacOS only } fuse_daemon.unmount().expect("unmount"); } #[tokio::test] /// Ensure we allocate the same inodes for the same directory contents. /// $DIRECTORY_COMPLICATED_NAME/keep contains the same data as $DIRECTORY_WITH_KEEP. async fn compare_inodes_directories() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_with_keep(&blob_service, &directory_service, &mut root_nodes).await; populate_directory_complicated(&blob_service, &directory_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p_dir_with_keep = tmpdir.path().join(DIRECTORY_WITH_KEEP_NAME); let p_sibling_dir = tmpdir.path().join(DIRECTORY_COMPLICATED_NAME).join("keep"); // peek at metadata. assert_eq!( tokio::fs::metadata(p_dir_with_keep) .await .expect("must succeed") .ino(), tokio::fs::metadata(p_sibling_dir) .await .expect("must succeed") .ino() ); fuse_daemon.unmount().expect("unmount"); } /// Ensure we allocate the same inodes for the same directory contents. /// $DIRECTORY_COMPLICATED_NAME/keep/,keep contains the same data as $DIRECTORY_COMPLICATED_NAME/.keep #[tokio::test] async fn compare_inodes_files() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_complicated(&blob_service, &directory_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p_keep1 = tmpdir.path().join(DIRECTORY_COMPLICATED_NAME).join(".keep"); let p_keep2 = tmpdir .path() .join(DIRECTORY_COMPLICATED_NAME) .join("keep") .join(".keep"); // peek at metadata. assert_eq!( tokio::fs::metadata(p_keep1) .await .expect("must succeed") .ino(), tokio::fs::metadata(p_keep2) .await .expect("must succeed") .ino() ); fuse_daemon.unmount().expect("unmount"); } /// Ensure we allocate the same inode for symlinks pointing to the same targets. /// $DIRECTORY_COMPLICATED_NAME/aa points to the same target as SYMLINK_NAME2. #[tokio::test] async fn compare_inodes_symlinks() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directory_complicated(&blob_service, &directory_service, &mut root_nodes).await; populate_symlink2(&mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p1 = tmpdir.path().join(DIRECTORY_COMPLICATED_NAME).join("aa"); let p2 = tmpdir.path().join(SYMLINK_NAME2); // peek at metadata. assert_eq!( tokio::fs::symlink_metadata(p1) .await .expect("must succeed") .ino(), tokio::fs::symlink_metadata(p2) .await .expect("must succeed") .ino() ); fuse_daemon.unmount().expect("unmount"); } /// Check we match paths exactly. #[tokio::test] async fn read_wrong_paths_in_root() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_blob_a(&blob_service, &mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); // wrong name assert!( tokio::fs::metadata(tmpdir.path().join("00000000000000000000000000000000-tes")) .await .is_err() ); // invalid hash assert!( tokio::fs::metadata(tmpdir.path().join("0000000000000000000000000000000-test")) .await .is_err() ); // right name, must exist assert!( tokio::fs::metadata(tmpdir.path().join("00000000000000000000000000000000-test")) .await .is_ok() ); // now wrong name with right hash still may not exist assert!( tokio::fs::metadata(tmpdir.path().join("00000000000000000000000000000000-tes")) .await .is_err() ); fuse_daemon.unmount().expect("unmount"); } /// Make sure writes are not allowed #[tokio::test] async fn disallow_writes() { // https://plume.benboeckel.net/~/JustAnotherBlog/skipping-tests-in-rust if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let root_nodes = BTreeMap::default(); let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(BLOB_A_NAME); let e = tokio::fs::File::create(p).await.expect_err("must fail"); assert_eq!(Some(libc::EROFS), e.raw_os_error()); fuse_daemon.unmount().expect("unmount"); } #[tokio::test] /// Ensure we get an IO error if the directory service does not have the Directory object. async fn missing_directory() { if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_directorynode_without_directory(&mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(DIRECTORY_WITH_KEEP_NAME); { // `stat` on the path should succeed, because it doesn't trigger the directory request. tokio::fs::metadata(&p).await.expect("must succeed"); // However, calling either `readdir` or `stat` on a child should fail with an IO error. // It fails when trying to pull the first entry, because we don't implement opendir separately ReadDirStream::new(tokio::fs::read_dir(&p).await.unwrap()) .next() .await .expect("must be some") .expect_err("must be err"); // rust currently sets e.kind() to Uncategorized, which isn't very // helpful, so we don't look at the error more closely than that.. tokio::fs::metadata(p.join(".keep")) .await .expect_err("must fail"); } fuse_daemon.unmount().expect("unmount"); } #[tokio::test(flavor = "multi_thread", worker_threads = 2)] /// Ensure we get an IO error if the blob service does not have the blob async fn missing_blob() { if !std::path::Path::new("/dev/fuse").exists() { eprintln!("skipping test"); return; } let tmpdir = TempDir::new().unwrap(); let (blob_service, directory_service) = gen_svcs(); let mut root_nodes = BTreeMap::default(); populate_filenode_without_blob(&mut root_nodes).await; let mut fuse_daemon = do_mount( blob_service, directory_service, root_nodes, tmpdir.path(), false, false, ) .expect("must succeed"); let p = tmpdir.path().join(BLOB_A_NAME); { // `stat` on the blob should succeed, because it doesn't trigger a request to the blob service. tokio::fs::metadata(&p).await.expect("must succeed"); // However, calling read on the blob should fail. // rust currently sets e.kind() to Uncategorized, which isn't very // helpful, so we don't look at the error more closely than that.. tokio::fs::read(p).await.expect_err("must fail"); } fuse_daemon.unmount().expect("unmount"); }