package_directory/
lib.rs

1// Copyright 2021 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#![allow(clippy::let_unit_value)]
6
7use fidl::endpoints::ServerEnd;
8use fidl_fuchsia_io as fio;
9use log::error;
10use std::collections::HashSet;
11use std::convert::TryInto as _;
12use std::future::Future;
13use vfs::common::send_on_open_with_error;
14use vfs::directory::entry::EntryInfo;
15use vfs::directory::entry_container::Directory;
16use vfs::{ObjectRequest, ObjectRequestRef};
17
18mod meta_as_dir;
19mod meta_subdir;
20mod non_meta_subdir;
21mod root_dir;
22mod root_dir_cache;
23
24pub use root_dir::{PathError, ReadFileError, RootDir, SubpackagesError};
25pub use root_dir_cache::RootDirCache;
26pub use vfs::execution_scope::ExecutionScope;
27
28pub(crate) const DIRECTORY_ABILITIES: fio::Abilities =
29    fio::Abilities::GET_ATTRIBUTES.union(fio::Abilities::ENUMERATE).union(fio::Abilities::TRAVERSE);
30
31pub(crate) const ALLOWED_FLAGS: fio::Flags = fio::Flags::empty()
32    .union(fio::MASK_KNOWN_PROTOCOLS)
33    .union(fio::PERM_READABLE)
34    .union(fio::PERM_EXECUTABLE)
35    .union(fio::Flags::PERM_INHERIT_EXECUTE)
36    .union(fio::Flags::FLAG_SEND_REPRESENTATION);
37
38#[derive(thiserror::Error, Debug)]
39pub enum Error {
40    #[error("the meta.far was not found")]
41    MissingMetaFar,
42
43    #[error("while opening the meta.far")]
44    OpenMetaFar(#[source] NonMetaStorageError),
45
46    #[error("while instantiating a fuchsia archive reader")]
47    ArchiveReader(#[source] fuchsia_archive::Error),
48
49    #[error("meta.far has a path that is not valid utf-8: {path:?}")]
50    NonUtf8MetaEntry {
51        #[source]
52        source: std::str::Utf8Error,
53        path: Vec<u8>,
54    },
55
56    #[error("while reading meta/contents")]
57    ReadMetaContents(#[source] fuchsia_archive::Error),
58
59    #[error("while deserializing meta/contents")]
60    DeserializeMetaContents(#[source] fuchsia_pkg::MetaContentsError),
61
62    #[error("collision between a file and a directory at path: '{:?}'", path)]
63    FileDirectoryCollision { path: String },
64
65    #[error("the supplied RootDir already has a dropper set")]
66    DropperAlreadySet,
67}
68
69impl From<&Error> for zx::Status {
70    fn from(e: &Error) -> Self {
71        use Error::*;
72        match e {
73            MissingMetaFar => zx::Status::NOT_FOUND,
74            OpenMetaFar(e) => e.into(),
75            DropperAlreadySet => zx::Status::INTERNAL,
76            ArchiveReader(fuchsia_archive::Error::Read(_)) => zx::Status::IO,
77            ArchiveReader(_) | ReadMetaContents(_) | DeserializeMetaContents(_) => {
78                zx::Status::INVALID_ARGS
79            }
80            FileDirectoryCollision { .. } | NonUtf8MetaEntry { .. } => zx::Status::INVALID_ARGS,
81        }
82    }
83}
84
85#[derive(thiserror::Error, Debug)]
86pub enum NonMetaStorageError {
87    #[error("while reading blob")]
88    ReadBlob(#[source] fuchsia_fs::file::ReadError),
89
90    #[error("while opening blob")]
91    OpenBlob(#[source] fuchsia_fs::node::OpenError),
92
93    #[error("while making FIDL call")]
94    Fidl(#[source] fidl::Error),
95
96    #[error("while calling GetBackingMemory")]
97    GetVmo(#[source] zx::Status),
98}
99
100impl NonMetaStorageError {
101    pub fn is_not_found_error(&self) -> bool {
102        match self {
103            NonMetaStorageError::ReadBlob(e) => e.is_not_found_error(),
104            NonMetaStorageError::OpenBlob(e) => e.is_not_found_error(),
105            NonMetaStorageError::GetVmo(status) => *status == zx::Status::NOT_FOUND,
106            _ => false,
107        }
108    }
109}
110
111impl From<&NonMetaStorageError> for zx::Status {
112    fn from(e: &NonMetaStorageError) -> Self {
113        if e.is_not_found_error() {
114            zx::Status::NOT_FOUND
115        } else {
116            zx::Status::INTERNAL
117        }
118    }
119}
120
121/// The storage that provides the non-meta files (accessed by hash) of a package-directory (e.g.
122/// blobfs).
123pub trait NonMetaStorage: Send + Sync + Sized + 'static {
124    /// Open a non-meta file by hash. `scope` may complete while there are still open connections.
125    fn open(
126        &self,
127        blob: &fuchsia_hash::Hash,
128        flags: fio::OpenFlags,
129        scope: ExecutionScope,
130        server_end: ServerEnd<fio::NodeMarker>,
131    ) -> Result<(), NonMetaStorageError>;
132
133    fn open3(
134        &self,
135        _blob: &fuchsia_hash::Hash,
136        _flags: fio::Flags,
137        _scope: ExecutionScope,
138        _object_request: ObjectRequestRef<'_>,
139    ) -> Result<(), zx::Status>;
140
141    /// Get a read-only VMO for the blob.
142    fn get_blob_vmo(
143        &self,
144        hash: &fuchsia_hash::Hash,
145    ) -> impl Future<Output = Result<zx::Vmo, NonMetaStorageError>> + Send;
146
147    /// Reads the contents of a blob.
148    fn read_blob(
149        &self,
150        hash: &fuchsia_hash::Hash,
151    ) -> impl Future<Output = Result<Vec<u8>, NonMetaStorageError>> + Send;
152}
153
154impl NonMetaStorage for blobfs::Client {
155    fn open(
156        &self,
157        blob: &fuchsia_hash::Hash,
158        flags: fio::OpenFlags,
159        scope: ExecutionScope,
160        server_end: ServerEnd<fio::NodeMarker>,
161    ) -> Result<(), NonMetaStorageError> {
162        self.deprecated_open_blob_for_read(blob, flags, scope, server_end).map_err(|e| {
163            NonMetaStorageError::OpenBlob(fuchsia_fs::node::OpenError::SendOpenRequest(e))
164        })
165    }
166
167    fn open3(
168        &self,
169        blob: &fuchsia_hash::Hash,
170        flags: fio::Flags,
171        scope: ExecutionScope,
172        object_request: ObjectRequestRef<'_>,
173    ) -> Result<(), zx::Status> {
174        self.open_blob_for_read(blob, flags, scope, object_request)
175    }
176
177    async fn get_blob_vmo(
178        &self,
179        hash: &fuchsia_hash::Hash,
180    ) -> Result<zx::Vmo, NonMetaStorageError> {
181        self.get_blob_vmo(hash).await.map_err(|e| match e {
182            blobfs::GetBlobVmoError::OpenBlob(e) => NonMetaStorageError::OpenBlob(e),
183            blobfs::GetBlobVmoError::GetVmo(e) => NonMetaStorageError::GetVmo(e),
184            blobfs::GetBlobVmoError::Fidl(e) => NonMetaStorageError::Fidl(e),
185        })
186    }
187
188    async fn read_blob(&self, hash: &fuchsia_hash::Hash) -> Result<Vec<u8>, NonMetaStorageError> {
189        let vmo = NonMetaStorage::get_blob_vmo(self, hash).await?;
190        let content_size = vmo.get_content_size().map_err(|e| {
191            NonMetaStorageError::ReadBlob(fuchsia_fs::file::ReadError::ReadError(e))
192        })?;
193        vmo.read_to_vec(0, content_size)
194            .map_err(|e| NonMetaStorageError::ReadBlob(fuchsia_fs::file::ReadError::ReadError(e)))
195    }
196}
197
198/// Assumes the directory is a flat container and the files are named after their hashes.
199impl NonMetaStorage for fio::DirectoryProxy {
200    fn open(
201        &self,
202        blob: &fuchsia_hash::Hash,
203        flags: fio::OpenFlags,
204        _scope: ExecutionScope,
205        server_end: ServerEnd<fio::NodeMarker>,
206    ) -> Result<(), NonMetaStorageError> {
207        self.deprecated_open(flags, fio::ModeType::empty(), blob.to_string().as_str(), server_end)
208            .map_err(|e| {
209                NonMetaStorageError::OpenBlob(fuchsia_fs::node::OpenError::SendOpenRequest(e))
210            })
211    }
212
213    fn open3(
214        &self,
215        blob: &fuchsia_hash::Hash,
216        flags: fio::Flags,
217        _scope: ExecutionScope,
218        object_request: ObjectRequestRef<'_>,
219    ) -> Result<(), zx::Status> {
220        // If the FIDL call passes, errors will be communicated via the `object_request` channel.
221        self.open(
222            blob.to_string().as_str(),
223            flags,
224            &object_request.options(),
225            object_request.take().into_channel(),
226        )
227        .map_err(|_fidl_error| zx::Status::PEER_CLOSED)
228    }
229
230    async fn get_blob_vmo(
231        &self,
232        hash: &fuchsia_hash::Hash,
233    ) -> Result<zx::Vmo, NonMetaStorageError> {
234        let proxy = fuchsia_fs::directory::open_file(self, &hash.to_string(), fio::PERM_READABLE)
235            .await
236            .map_err(NonMetaStorageError::OpenBlob)?;
237        proxy
238            .get_backing_memory(fio::VmoFlags::PRIVATE_CLONE | fio::VmoFlags::READ)
239            .await
240            .map_err(NonMetaStorageError::Fidl)?
241            .map_err(|e| NonMetaStorageError::GetVmo(zx::Status::from_raw(e)))
242    }
243
244    async fn read_blob(&self, hash: &fuchsia_hash::Hash) -> Result<Vec<u8>, NonMetaStorageError> {
245        fuchsia_fs::directory::read_file(self, &hash.to_string())
246            .await
247            .map_err(NonMetaStorageError::ReadBlob)
248    }
249}
250
251/// Serves a package directory for the package with hash `meta_far` on `server_end`.
252/// The connection rights are set by `flags`, used the same as the `flags` parameter of
253///   fuchsia.io/Directory.Open.
254pub fn serve(
255    scope: vfs::execution_scope::ExecutionScope,
256    non_meta_storage: impl NonMetaStorage,
257    meta_far: fuchsia_hash::Hash,
258    flags: fio::Flags,
259    server_end: ServerEnd<fio::DirectoryMarker>,
260) -> impl futures::Future<Output = Result<(), Error>> {
261    serve_path(
262        scope,
263        non_meta_storage,
264        meta_far,
265        flags,
266        vfs::Path::dot(),
267        server_end.into_channel().into(),
268    )
269}
270
271/// Serves a sub-`path` of a package directory for the package with hash `meta_far` on `server_end`.
272///
273/// The connection rights are set by `flags`, used the same as the `flags` parameter of
274///   fuchsia.io/Directory.Open.
275/// On error while loading the package metadata, closes the provided server end, sending an OnOpen
276///   response with an error status if requested.
277pub async fn serve_path(
278    scope: vfs::execution_scope::ExecutionScope,
279    non_meta_storage: impl NonMetaStorage,
280    meta_far: fuchsia_hash::Hash,
281    flags: fio::Flags,
282    path: vfs::Path,
283    server_end: ServerEnd<fio::NodeMarker>,
284) -> Result<(), Error> {
285    let root_dir = match RootDir::new(non_meta_storage, meta_far).await {
286        Ok(d) => d,
287        Err(e) => {
288            let () = send_on_open_with_error(
289                flags.contains(fio::Flags::FLAG_SEND_REPRESENTATION),
290                server_end,
291                (&e).into(),
292            );
293            return Err(e);
294        }
295    };
296
297    ObjectRequest::new(flags, &fio::Options::default(), server_end.into_channel())
298        .handle(|request| root_dir.open3(scope, path, flags, request));
299    Ok(())
300}
301
302fn usize_to_u64_safe(u: usize) -> u64 {
303    let ret: u64 = u.try_into().unwrap();
304    static_assertions::assert_eq_size_val!(u, ret);
305    ret
306}
307
308/// RootDir takes an optional `OnRootDirDrop` value that will be dropped when the RootDir is
309/// dropped.
310///
311/// This is useful because the VFS functions operate on `Arc<RootDir>`s (and create clones of the
312/// `Arc`s in response to e.g. `Directory::open` calls), so this allows clients to perform actions
313/// when the last clone of the `Arc<RootDir>` is dropped (which is frequently when the last
314/// fuchsia.io connection closes).
315///
316/// The `ExecutionScope` used to serve the connection could also be used to notice when all the
317/// `Arc<RootDir>`s are dropped, but only if the `Arc<RootDir>`s are only used by VFS. Tracking
318/// when the `RootDir` itself is dropped allows non VFS uses of the `Arc<RootDir>`s.
319pub trait OnRootDirDrop: Send + Sync + std::fmt::Debug {}
320impl<T> OnRootDirDrop for T where T: Send + Sync + std::fmt::Debug {}
321
322/// Takes a directory hierarchy and a directory in the hierarchy and returns all the directory's
323/// children in alphabetical order.
324///   `materialized_tree`: object relative path expressions of every file in a directory hierarchy
325///   `dir`: the empty string (signifies the root dir) or a path to a subdir (must be an object
326///          relative path expression plus a trailing slash)
327/// Returns an empty vec if `dir` isn't in `materialized_tree`.
328fn get_dir_children<'a>(
329    materialized_tree: impl IntoIterator<Item = &'a str>,
330    dir: &str,
331) -> Vec<(EntryInfo, String)> {
332    let mut added_entries = HashSet::new();
333    let mut res = vec![];
334
335    for path in materialized_tree {
336        if let Some(path) = path.strip_prefix(dir) {
337            match path.split_once('/') {
338                None => {
339                    // TODO(https://fxbug.dev/42161818) Replace .contains/.insert with .get_or_insert_owned when non-experimental.
340                    if !added_entries.contains(path) {
341                        res.push((
342                            EntryInfo::new(fio::INO_UNKNOWN, fio::DirentType::File),
343                            path.to_string(),
344                        ));
345                        added_entries.insert(path.to_string());
346                    }
347                }
348                Some((first, _)) => {
349                    if !added_entries.contains(first) {
350                        res.push((
351                            EntryInfo::new(fio::INO_UNKNOWN, fio::DirentType::Directory),
352                            first.to_string(),
353                        ));
354                        added_entries.insert(first.to_string());
355                    }
356                }
357            }
358        }
359    }
360
361    // TODO(https://fxbug.dev/42162840) Remove this sort
362    res.sort_by(|a, b| a.1.cmp(&b.1));
363    res
364}
365
366#[cfg(test)]
367mod tests {
368    use super::*;
369    use assert_matches::assert_matches;
370    use fuchsia_hash::Hash;
371    use fuchsia_pkg_testing::blobfs::Fake as FakeBlobfs;
372    use fuchsia_pkg_testing::PackageBuilder;
373    use futures::StreamExt;
374    use vfs::directory::helper::DirectlyMutable;
375
376    #[fuchsia_async::run_singlethreaded(test)]
377    async fn serve() {
378        let (proxy, server_end) = fidl::endpoints::create_proxy();
379        let package = PackageBuilder::new("just-meta-far").build().await.expect("created pkg");
380        let (metafar_blob, _) = package.contents();
381        let (blobfs_fake, blobfs_client) = FakeBlobfs::new();
382        blobfs_fake.add_blob(metafar_blob.merkle, metafar_blob.contents);
383
384        crate::serve(
385            vfs::execution_scope::ExecutionScope::new(),
386            blobfs_client,
387            metafar_blob.merkle,
388            fio::PERM_READABLE,
389            server_end,
390        )
391        .await
392        .unwrap();
393
394        assert_eq!(
395            fuchsia_fs::directory::readdir(&proxy).await.unwrap(),
396            vec![fuchsia_fs::directory::DirEntry {
397                name: "meta".to_string(),
398                kind: fuchsia_fs::directory::DirentKind::Directory
399            }]
400        );
401    }
402
403    #[fuchsia_async::run_singlethreaded(test)]
404    async fn serve_path_open_root() {
405        let (proxy, server_end) = fidl::endpoints::create_proxy::<fio::DirectoryMarker>();
406        let package = PackageBuilder::new("just-meta-far").build().await.expect("created pkg");
407        let (metafar_blob, _) = package.contents();
408        let (blobfs_fake, blobfs_client) = FakeBlobfs::new();
409        blobfs_fake.add_blob(metafar_blob.merkle, metafar_blob.contents);
410
411        crate::serve_path(
412            vfs::execution_scope::ExecutionScope::new(),
413            blobfs_client,
414            metafar_blob.merkle,
415            fio::PERM_READABLE,
416            vfs::Path::validate_and_split(".").unwrap(),
417            server_end.into_channel().into(),
418        )
419        .await
420        .unwrap();
421
422        assert_eq!(
423            fuchsia_fs::directory::readdir(&proxy).await.unwrap(),
424            vec![fuchsia_fs::directory::DirEntry {
425                name: "meta".to_string(),
426                kind: fuchsia_fs::directory::DirentKind::Directory
427            }]
428        );
429    }
430
431    #[fuchsia_async::run_singlethreaded(test)]
432    async fn serve_path_open_meta() {
433        let (proxy, server_end) = fidl::endpoints::create_proxy::<fio::FileMarker>();
434        let package = PackageBuilder::new("just-meta-far").build().await.expect("created pkg");
435        let (metafar_blob, _) = package.contents();
436        let (blobfs_fake, blobfs_client) = FakeBlobfs::new();
437        blobfs_fake.add_blob(metafar_blob.merkle, metafar_blob.contents);
438
439        crate::serve_path(
440            vfs::execution_scope::ExecutionScope::new(),
441            blobfs_client,
442            metafar_blob.merkle,
443            fio::PERM_READABLE | fio::Flags::PROTOCOL_FILE,
444            vfs::Path::validate_and_split("meta").unwrap(),
445            server_end.into_channel().into(),
446        )
447        .await
448        .unwrap();
449
450        assert_eq!(
451            fuchsia_fs::file::read_to_string(&proxy).await.unwrap(),
452            metafar_blob.merkle.to_string(),
453        );
454    }
455
456    #[fuchsia_async::run_singlethreaded(test)]
457    async fn serve_path_open_missing_path_in_package() {
458        let (proxy, server_end) = fidl::endpoints::create_proxy::<fio::NodeMarker>();
459        let package = PackageBuilder::new("just-meta-far").build().await.expect("created pkg");
460        let (metafar_blob, _) = package.contents();
461        let (blobfs_fake, blobfs_client) = FakeBlobfs::new();
462        blobfs_fake.add_blob(metafar_blob.merkle, metafar_blob.contents);
463
464        assert_matches!(
465            crate::serve_path(
466                vfs::execution_scope::ExecutionScope::new(),
467                blobfs_client,
468                metafar_blob.merkle,
469                fio::PERM_READABLE | fio::Flags::FLAG_SEND_REPRESENTATION,
470                vfs::Path::validate_and_split("not-present").unwrap(),
471                server_end.into_channel().into(),
472            )
473            .await,
474            // serve_path succeeds in opening the package, but the forwarded open will discover
475            // that the requested path does not exist.
476            Ok(())
477        );
478
479        assert_eq!(node_into_on_open_status(proxy).await, Some(zx::Status::NOT_FOUND));
480    }
481
482    #[fuchsia_async::run_singlethreaded(test)]
483    async fn serve_path_open_missing_package() {
484        let (proxy, server_end) = fidl::endpoints::create_proxy::<fio::NodeMarker>();
485        let (_blobfs_fake, blobfs_client) = FakeBlobfs::new();
486
487        assert_matches!(
488            crate::serve_path(
489                vfs::execution_scope::ExecutionScope::new(),
490                blobfs_client,
491                Hash::from([0u8; 32]),
492                fio::PERM_READABLE | fio::Flags::FLAG_SEND_REPRESENTATION,
493                vfs::Path::validate_and_split(".").unwrap(),
494                server_end.into_channel().into(),
495            )
496            .await,
497            Err(Error::MissingMetaFar)
498        );
499
500        assert_eq!(node_into_on_open_status(proxy).await, Some(zx::Status::NOT_FOUND));
501    }
502
503    async fn node_into_on_open_status(node: fio::NodeProxy) -> Option<zx::Status> {
504        // Handle either an io1 OnOpen Status or an io2 epitaph status, though only one will be
505        // sent, determined by the open() API used.
506        let mut events = node.take_event_stream();
507        match events.next().await? {
508            Ok(fio::NodeEvent::OnOpen_ { s: status, .. }) => Some(zx::Status::from_raw(status)),
509            Ok(fio::NodeEvent::OnRepresentation { .. }) => Some(zx::Status::OK),
510            Err(fidl::Error::ClientChannelClosed { status, .. }) => Some(status),
511            other => panic!("unexpected stream event or error: {other:?}"),
512        }
513    }
514
515    fn file() -> EntryInfo {
516        EntryInfo::new(fio::INO_UNKNOWN, fio::DirentType::File)
517    }
518
519    fn dir() -> EntryInfo {
520        EntryInfo::new(fio::INO_UNKNOWN, fio::DirentType::Directory)
521    }
522
523    #[test]
524    fn get_dir_children_root() {
525        assert_eq!(get_dir_children([], ""), vec![]);
526        assert_eq!(get_dir_children(["a"], ""), vec![(file(), "a".to_string())]);
527        assert_eq!(
528            get_dir_children(["a", "b"], ""),
529            vec![(file(), "a".to_string()), (file(), "b".to_string())]
530        );
531        assert_eq!(
532            get_dir_children(["b", "a"], ""),
533            vec![(file(), "a".to_string()), (file(), "b".to_string())]
534        );
535        assert_eq!(get_dir_children(["a", "a"], ""), vec![(file(), "a".to_string())]);
536        assert_eq!(get_dir_children(["a/b"], ""), vec![(dir(), "a".to_string())]);
537        assert_eq!(
538            get_dir_children(["a/b", "c"], ""),
539            vec![(dir(), "a".to_string()), (file(), "c".to_string())]
540        );
541        assert_eq!(get_dir_children(["a/b/c"], ""), vec![(dir(), "a".to_string())]);
542    }
543
544    #[test]
545    fn get_dir_children_subdir() {
546        assert_eq!(get_dir_children([], "a/"), vec![]);
547        assert_eq!(get_dir_children(["a"], "a/"), vec![]);
548        assert_eq!(get_dir_children(["a", "b"], "a/"), vec![]);
549        assert_eq!(get_dir_children(["a/b"], "a/"), vec![(file(), "b".to_string())]);
550        assert_eq!(
551            get_dir_children(["a/b", "a/c"], "a/"),
552            vec![(file(), "b".to_string()), (file(), "c".to_string())]
553        );
554        assert_eq!(
555            get_dir_children(["a/c", "a/b"], "a/"),
556            vec![(file(), "b".to_string()), (file(), "c".to_string())]
557        );
558        assert_eq!(get_dir_children(["a/b", "a/b"], "a/"), vec![(file(), "b".to_string())]);
559        assert_eq!(get_dir_children(["a/b/c"], "a/"), vec![(dir(), "b".to_string())]);
560        assert_eq!(
561            get_dir_children(["a/b/c", "a/d"], "a/"),
562            vec![(dir(), "b".to_string()), (file(), "d".to_string())]
563        );
564        assert_eq!(get_dir_children(["a/b/c/d"], "a/"), vec![(dir(), "b".to_string())]);
565    }
566
567    const BLOB_CONTENTS: &[u8] = b"blob-contents";
568
569    fn blob_contents_hash() -> Hash {
570        fuchsia_merkle::from_slice(BLOB_CONTENTS).root()
571    }
572
573    #[fuchsia_async::run_singlethreaded(test)]
574    async fn bootfs_get_vmo_blob() {
575        let directory = vfs::directory::immutable::simple();
576        directory.add_entry(blob_contents_hash(), vfs::file::read_only(BLOB_CONTENTS)).unwrap();
577        let proxy = vfs::directory::serve_read_only(directory);
578
579        let vmo = proxy.get_blob_vmo(&blob_contents_hash()).await.unwrap();
580        assert_eq!(vmo.read_to_vec(0, BLOB_CONTENTS.len() as u64).unwrap(), BLOB_CONTENTS);
581    }
582
583    #[fuchsia_async::run_singlethreaded(test)]
584    async fn bootfs_read_blob() {
585        let directory = vfs::directory::immutable::simple();
586        directory.add_entry(blob_contents_hash(), vfs::file::read_only(BLOB_CONTENTS)).unwrap();
587        let proxy = vfs::directory::serve_read_only(directory);
588
589        assert_eq!(proxy.read_blob(&blob_contents_hash()).await.unwrap(), BLOB_CONTENTS);
590    }
591
592    #[fuchsia_async::run_singlethreaded(test)]
593    async fn bootfs_get_vmo_blob_missing_blob() {
594        let directory = vfs::directory::immutable::simple();
595        let proxy = vfs::directory::serve_read_only(directory);
596
597        let result = proxy.get_blob_vmo(&blob_contents_hash()).await;
598        assert_matches!(result, Err(NonMetaStorageError::OpenBlob(e)) if e.is_not_found_error());
599    }
600
601    #[fuchsia_async::run_singlethreaded(test)]
602    async fn bootfs_read_blob_missing_blob() {
603        let directory = vfs::directory::immutable::simple();
604        let proxy = vfs::directory::serve_read_only(directory);
605
606        let result = proxy.read_blob(&blob_contents_hash()).await;
607        assert_matches!(result, Err(NonMetaStorageError::ReadBlob(e)) if e.is_not_found_error());
608    }
609
610    #[fuchsia_async::run_singlethreaded(test)]
611    async fn blobfs_get_vmo_blob() {
612        let (blobfs_fake, blobfs_client) = FakeBlobfs::new();
613        blobfs_fake.add_blob(blob_contents_hash(), BLOB_CONTENTS);
614
615        let vmo =
616            NonMetaStorage::get_blob_vmo(&blobfs_client, &blob_contents_hash()).await.unwrap();
617        assert_eq!(vmo.read_to_vec(0, BLOB_CONTENTS.len() as u64).unwrap(), BLOB_CONTENTS);
618    }
619
620    #[fuchsia_async::run_singlethreaded(test)]
621    async fn blobfs_read_blob() {
622        let (blobfs_fake, blobfs_client) = FakeBlobfs::new();
623        blobfs_fake.add_blob(blob_contents_hash(), BLOB_CONTENTS);
624
625        assert_eq!(blobfs_client.read_blob(&blob_contents_hash()).await.unwrap(), BLOB_CONTENTS);
626    }
627
628    #[fuchsia_async::run_singlethreaded(test)]
629    async fn blobfs_get_vmo_blob_missing_blob() {
630        let (_blobfs_fake, blobfs_client) = FakeBlobfs::new();
631
632        let result = NonMetaStorage::get_blob_vmo(&blobfs_client, &blob_contents_hash()).await;
633        assert_matches!(result, Err(NonMetaStorageError::OpenBlob(e)) if e.is_not_found_error());
634    }
635
636    #[fuchsia_async::run_singlethreaded(test)]
637    async fn blobfs_read_blob_missing_blob() {
638        let (_blobfs_fake, blobfs_client) = FakeBlobfs::new();
639
640        let result = blobfs_client.read_blob(&blob_contents_hash()).await;
641        assert_matches!(result, Err(NonMetaStorageError::OpenBlob(e)) if e.is_not_found_error());
642    }
643}
package_directory/lib.rs

package_directory/
lib.rs
