Struct MemFs 

pub struct MemFs { /* private fields */ }

In-memory filesystem implementation used by tests and examples.

Implementations

impl MemFs

pub fn new() -> Self

Creates a new empty in-memory filesystem.

Trait Implementations

impl CommitSupport<u64> for MemFs

fn commit<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 u64, _offset: u64, _count: u32, ) -> Pin<Box<dyn Future<Output = FsResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Flush buffered writes for a byte range.

impl Default for MemFs

fn default() -> Self

Returns the “default value” for a type.

impl FileSystem for MemFs

type Handle = u64

Opaque stable handle type for backend objects.

fn root(&self) -> Self::Handle

Returns the root handle for the exported filesystem.

fn capabilities(&self) -> FsCapabilities

Returns static capability flags.

fn limits(&self) -> FsLimits

Returns static filesystem limits.

fn statfs<'life0, 'life1, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, ) -> Pin<Box<dyn Future<Output = FsResult<FsStats>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Returns filesystem-wide space and object statistics.

fn getattr<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 Self::Handle, ) -> Pin<Box<dyn Future<Output = FsResult<Attrs>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Returns complete exported attributes for an object.

fn access<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 Self::Handle, requested: AccessMask, ) -> Pin<Box<dyn Future<Output = FsResult<AccessMask>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Returns the subset of requested access bits granted for the caller.

fn lookup<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, parent: &'life2 Self::Handle, name: &'life3 str, ) -> Pin<Box<dyn Future<Output = FsResult<Self::Handle>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Looks up a named child in a directory.

fn parent<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, dir: &'life2 Self::Handle, ) -> Pin<Box<dyn Future<Output = FsResult<Option<Self::Handle>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Returns the parent of a directory, or None for the root directory.

fn readdir<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, dir: &'life2 Self::Handle, cookie: u64, max_entries: u32, with_attrs: bool, ) -> Pin<Box<dyn Future<Output = FsResult<DirPage<Self::Handle>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Returns a page of directory entries starting after cookie.

fn read<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 Self::Handle, offset: u64, count: u32, ) -> Pin<Box<dyn Future<Output = FsResult<ReadResult>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Reads a byte range from an object.

fn write<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 Self::Handle, offset: u64, data: Bytes, _requested: WriteStability, ) -> Pin<Box<dyn Future<Output = FsResult<WriteResult>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Writes a byte range to an object.

fn create<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, ctx: &'life1 RequestContext, parent: &'life2 Self::Handle, name: &'life3 str, req: CreateRequest, ) -> Pin<Box<dyn Future<Output = FsResult<CreateResult<Self::Handle>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Creates a regular file or directory.

fn remove<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, parent: &'life2 Self::Handle, name: &'life3 str, ) -> Pin<Box<dyn Future<Output = FsResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Removes a file or empty directory by name.

fn rename<'life0, 'life1, 'life2, 'life3, 'life4, 'life5, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, from_dir: &'life2 Self::Handle, from_name: &'life3 str, to_dir: &'life4 Self::Handle, to_name: &'life5 str, ) -> Pin<Box<dyn Future<Output = FsResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait, 'life4: 'async_trait, 'life5: 'async_trait,

Renames or moves an entry.

fn setattr<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 Self::Handle, attrs: &'life3 SetAttrs, ) -> Pin<Box<dyn Future<Output = FsResult<Attrs>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Applies attribute updates and returns the resulting attrs.

fn xattrs(&self) -> Option<&dyn Xattrs<Self::Handle>>

Returns optional named-attribute support.

fn symlinks(&self) -> Option<&dyn Symlinks<Self::Handle>>

Returns optional symlink support.

fn hard_links(&self) -> Option<&dyn HardLinks<Self::Handle>>

Returns optional hard-link support.

fn commit_support(&self) -> Option<&dyn CommitSupport<Self::Handle>>

Returns optional explicit commit support.

impl HardLinks<u64> for MemFs

fn link<'life0, 'life1, 'life2, 'life3, 'life4, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, source: &'life2 u64, parent: &'life3 u64, name: &'life4 str, ) -> Pin<Box<dyn Future<Output = FsResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait, 'life4: 'async_trait,

Create a hard link to an existing file.

impl Symlinks<u64> for MemFs

fn create_symlink<'life0, 'life1, 'life2, 'life3, 'life4, 'life5, 'async_trait>( &'life0 self, ctx: &'life1 RequestContext, parent: &'life2 u64, name: &'life3 str, target: &'life4 str, attrs: &'life5 SetAttrs, ) -> Pin<Box<dyn Future<Output = FsResult<CreateResult<u64>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait, 'life4: 'async_trait, 'life5: 'async_trait,

Create a symbolic link and return the created handle and attrs.

fn readlink<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 u64, ) -> Pin<Box<dyn Future<Output = FsResult<String>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Read a symlink target.

impl Xattrs<u64> for MemFs

fn list_xattrs<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 u64, ) -> Pin<Box<dyn Future<Output = FsResult<Vec<String>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

List all named attributes attached to an object.

fn get_xattr<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 u64, name: &'life3 str, ) -> Pin<Box<dyn Future<Output = FsResult<Bytes>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Fetch a full named-attribute value.

fn set_xattr<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 u64, name: &'life3 str, value: Bytes, mode: XattrSetMode, ) -> Pin<Box<dyn Future<Output = FsResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Set or replace a named attribute value.

fn remove_xattr<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _ctx: &'life1 RequestContext, handle: &'life2 u64, name: &'life3 str, ) -> Pin<Box<dyn Future<Output = FsResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Remove a named attribute.