pub struct InMemoryOnDiskCorpus<I>
where I: Input,
{ /* private fields */ }
Expand description

A corpus able to store Testcases to disk, while also keeping all of them in memory.

Metadata is written to a .<filename>.metadata file in the same folder by default.

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impl<I> InMemoryOnDiskCorpus<I>
where I: Input,

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pub fn new<P>(dir_path: P) -> Result<Self, Error>
where P: AsRef<Path>,

Creates an InMemoryOnDiskCorpus.

This corpus stores all testcases to disk, and keeps all of them in memory, as well.

By default, it stores metadata for each Testcase as prettified json. Metadata will be written to a file named .<testcase>.metadata The metadata may include objective reason, specific information for a fuzz job, and more.

If you don’t want metadata, use InMemoryOnDiskCorpus::no_meta. To pick a different metadata format, use InMemoryOnDiskCorpus::with_meta_format.

Will error, if std::fs::create_dir_all() failed for dir_path.

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pub fn with_meta_format<P>( dir_path: P, meta_format: Option<OnDiskMetadataFormat> ) -> Result<Self, Error>
where P: AsRef<Path>,

Creates the InMemoryOnDiskCorpus specifying the format in which Metadata will be saved to disk.

Will error, if std::fs::create_dir_all() failed for dir_path.

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pub fn with_meta_format_and_prefix<P>( dir_path: P, meta_format: Option<OnDiskMetadataFormat>, prefix: Option<String>, locking: bool ) -> Result<Self, Error>
where P: AsRef<Path>,

Creates the InMemoryOnDiskCorpus specifying the format in which Metadata will be saved to disk and the prefix for the filenames.

Will error, if std::fs::create_dir_all() failed for dir_path.

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pub fn no_meta<P>(dir_path: P) -> Result<Self, Error>
where P: AsRef<Path>,

Creates an InMemoryOnDiskCorpus that will not store .metadata files

Will error, if std::fs::create_dir_all() failed for dir_path.

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pub fn rename_testcase( &self, testcase: &mut Testcase<I>, filename: String ) -> Result<(), Error>

Sets the filename for a Testcase. If an error gets returned from the corpus (i.e., file exists), we’ll have to retry with a different filename.

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pub fn dir_path(&self) -> &PathBuf

Path to the corpus directory associated with this corpus

Trait Implementations§

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impl<I> Clone for InMemoryOnDiskCorpus<I>
where I: Input + Clone,

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fn clone(&self) -> InMemoryOnDiskCorpus<I>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<I> Corpus for InMemoryOnDiskCorpus<I>
where I: Input,

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fn count(&self) -> usize

Returns the number of elements

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fn add(&mut self, testcase: Testcase<I>) -> Result<CorpusId, Error>

Add an entry to the corpus and return its index

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fn replace( &mut self, idx: CorpusId, testcase: Testcase<I> ) -> Result<Testcase<I>, Error>

Replaces the testcase at the given idx

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fn remove(&mut self, idx: CorpusId) -> Result<Testcase<I>, Error>

Removes an entry from the corpus, returning it if it was present.

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fn get(&self, idx: CorpusId) -> Result<&RefCell<Testcase<I>>, Error>

Get by id

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fn current(&self) -> &Option<CorpusId>

Current testcase scheduled

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fn current_mut(&mut self) -> &mut Option<CorpusId>

Current testcase scheduled (mutable)

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fn next(&self, idx: CorpusId) -> Option<CorpusId>

Get the next corpus id
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fn prev(&self, idx: CorpusId) -> Option<CorpusId>

Get the prev corpus id
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fn first(&self) -> Option<CorpusId>

Get the first inserted corpus id
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fn last(&self) -> Option<CorpusId>

Get the last inserted corpus id
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fn nth(&self, nth: usize) -> CorpusId

Get the nth corpus id
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fn load_input_into( &self, testcase: &mut Testcase<Self::Input> ) -> Result<(), Error>

Method to load the input for this Testcase from persistent storage, if necessary, and if was not already loaded (== Some(input)). After this call, testcase.input() must always return Some(input).
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fn store_input_from( &self, testcase: &Testcase<Self::Input> ) -> Result<(), Error>

Method to store the input of this Testcase to persistent storage, if necessary.
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fn is_empty(&self) -> bool

Returns true, if no elements are in this corpus yet
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fn ids(&self) -> CorpusIdIterator<'_, Self>

An iterator over very active corpus id
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fn cloned_input_for_id(&self, idx: CorpusId) -> Result<Self::Input, Error>

Loads the Input for a given CorpusId from the Corpus, and returns the clone.
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impl<I> Debug for InMemoryOnDiskCorpus<I>
where I: Input + Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<I> Default for InMemoryOnDiskCorpus<I>
where I: Input + Default,

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fn default() -> InMemoryOnDiskCorpus<I>

Returns the “default value” for a type. Read more
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impl<'de, I> Deserialize<'de> for InMemoryOnDiskCorpus<I>

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl<I> HasTestcase for InMemoryOnDiskCorpus<I>
where I: Input,

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fn testcase( &self, id: CorpusId ) -> Result<Ref<'_, Testcase<<Self as UsesInput>::Input>>, Error>

Shorthand to receive a Ref to a stored Testcase, by CorpusId. For a normal state, this should return a Testcase in the corpus, not the objectives.
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fn testcase_mut( &self, id: CorpusId ) -> Result<RefMut<'_, Testcase<<Self as UsesInput>::Input>>, Error>

Shorthand to receive a RefMut to a stored Testcase, by CorpusId. For a normal state, this should return a Testcase in the corpus, not the objectives.
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impl<I> Serialize for InMemoryOnDiskCorpus<I>

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<I> UsesInput for InMemoryOnDiskCorpus<I>
where I: Input,

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type Input = I

Type which will be used throughout this state.

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