Struct WasiFilesystemCtxView

pub struct WasiFilesystemCtxView<'a> {
    pub ctx: &'a mut WasiFilesystemCtx,
    pub table: &'a mut ResourceTable,
}

Fields

ctx: &'a mut WasiFilesystemCtx

table: &'a mut ResourceTable

Trait Implementations

impl Host for WasiFilesystemCtxView<'_>

fn convert_error_code(&mut self, err: FsError) -> Result<ErrorCode>

fn filesystem_error_code( &mut self, err: Resource<Error>, ) -> Result<Option<ErrorCode>>

Attempts to extract a filesystem-related error-code from the stream error provided.

impl Host for WasiFilesystemCtxView<'_>

fn get_directories(&mut self) -> Result<Vec<(Resource<Descriptor>, String)>>

Return the set of preopened directories, and their paths.

impl Host for WasiFilesystemCtxView<'_>

fn convert_error_code(&mut self, err: FsError) -> Result<ErrorCode>

fn filesystem_error_code( &mut self, err: Resource<Error>, ) -> Result<Option<ErrorCode>>

Attempts to extract a filesystem-related error-code from the stream error provided.

impl HostDescriptor for WasiFilesystemCtxView<'_>

fn advise( &mut self, fd: Resource<Descriptor>, offset: Filesize, len: Filesize, advice: Advice, ) -> FsResult<()>

Provide file advisory information on a descriptor.

fn sync_data(&mut self, fd: Resource<Descriptor>) -> FsResult<()>

Synchronize the data of a file to disk.

fn get_flags(&mut self, fd: Resource<Descriptor>) -> FsResult<DescriptorFlags>

Get flags associated with a descriptor.

fn get_type(&mut self, fd: Resource<Descriptor>) -> FsResult<DescriptorType>

Get the dynamic type of a descriptor.

fn set_size(&mut self, fd: Resource<Descriptor>, size: Filesize) -> FsResult<()>

Adjust the size of an open file. If this increases the file’s size, the extra bytes are filled with zeros.

fn set_times( &mut self, fd: Resource<Descriptor>, atim: NewTimestamp, mtim: NewTimestamp, ) -> FsResult<()>

Adjust the timestamps of an open file or directory.

fn read( &mut self, fd: Resource<Descriptor>, len: Filesize, offset: Filesize, ) -> FsResult<(Vec<u8>, bool)>

Read from a descriptor, without using and updating the descriptor’s offset.

fn write( &mut self, fd: Resource<Descriptor>, buf: Vec<u8>, offset: Filesize, ) -> FsResult<Filesize>

Write to a descriptor, without using and updating the descriptor’s offset.

fn read_directory( &mut self, fd: Resource<Descriptor>, ) -> FsResult<Resource<DirectoryEntryStream>>

Read directory entries from a directory.

fn sync(&mut self, fd: Resource<Descriptor>) -> FsResult<()>

Synchronize the data and metadata of a file to disk.

fn create_directory_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<()>

Create a directory.

fn stat(&mut self, fd: Resource<Descriptor>) -> FsResult<DescriptorStat>

Return the attributes of an open file or directory.

fn stat_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, ) -> FsResult<DescriptorStat>

Return the attributes of a file or directory.

fn set_times_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, atim: NewTimestamp, mtim: NewTimestamp, ) -> FsResult<()>

Adjust the timestamps of a file or directory.

fn link_at( &mut self, fd: Resource<Descriptor>, old_path_flags: PathFlags, old_path: String, new_descriptor: Resource<Descriptor>, new_path: String, ) -> FsResult<()>

Create a hard link.

fn open_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, oflags: OpenFlags, flags: DescriptorFlags, ) -> FsResult<Resource<Descriptor>>

Open a file or directory.

fn drop(&mut self, fd: Resource<Descriptor>) -> Result<()>

fn readlink_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<String>

Read the contents of a symbolic link.

fn remove_directory_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<()>

Remove a directory.

fn rename_at( &mut self, fd: Resource<Descriptor>, old_path: String, new_fd: Resource<Descriptor>, new_path: String, ) -> FsResult<()>

Rename a filesystem object.

fn symlink_at( &mut self, fd: Resource<Descriptor>, src_path: String, dest_path: String, ) -> FsResult<()>

Create a symbolic link (also known as a “symlink”).

fn unlink_file_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<()>

Unlink a filesystem object that is not a directory.

fn read_via_stream( &mut self, fd: Resource<Descriptor>, offset: Filesize, ) -> FsResult<Resource<InputStream>>

Return a stream for reading from a file, if available.

fn write_via_stream( &mut self, fd: Resource<Descriptor>, offset: Filesize, ) -> FsResult<Resource<OutputStream>>

Return a stream for writing to a file, if available.

fn append_via_stream( &mut self, fd: Resource<Descriptor>, ) -> FsResult<Resource<OutputStream>>

Return a stream for appending to a file, if available.

fn is_same_object( &mut self, a: Resource<Descriptor>, b: Resource<Descriptor>, ) -> Result<bool>

Test whether two descriptors refer to the same filesystem object.

fn metadata_hash( &mut self, fd: Resource<Descriptor>, ) -> FsResult<MetadataHashValue>

Return a hash of the metadata associated with a filesystem object referred to by a descriptor.

fn metadata_hash_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, ) -> FsResult<MetadataHashValue>

Return a hash of the metadata associated with a filesystem object referred to by a directory descriptor and a relative path.

impl HostDescriptor for WasiFilesystemCtxView<'_>

async fn advise( &mut self, fd: Resource<Descriptor>, offset: Filesize, len: Filesize, advice: Advice, ) -> FsResult<()>

Provide file advisory information on a descriptor.

async fn sync_data(&mut self, fd: Resource<Descriptor>) -> FsResult<()>

Synchronize the data of a file to disk.

async fn get_flags( &mut self, fd: Resource<Descriptor>, ) -> FsResult<DescriptorFlags>

Get flags associated with a descriptor.

async fn get_type( &mut self, fd: Resource<Descriptor>, ) -> FsResult<DescriptorType>

Get the dynamic type of a descriptor.

async fn set_size( &mut self, fd: Resource<Descriptor>, size: Filesize, ) -> FsResult<()>

Adjust the size of an open file. If this increases the file’s size, the extra bytes are filled with zeros.

async fn set_times( &mut self, fd: Resource<Descriptor>, atim: NewTimestamp, mtim: NewTimestamp, ) -> FsResult<()>

Adjust the timestamps of an open file or directory.

async fn read( &mut self, fd: Resource<Descriptor>, len: Filesize, offset: Filesize, ) -> FsResult<(Vec<u8>, bool)>

Read from a descriptor, without using and updating the descriptor’s offset.

async fn write( &mut self, fd: Resource<Descriptor>, buf: Vec<u8>, offset: Filesize, ) -> FsResult<Filesize>

Write to a descriptor, without using and updating the descriptor’s offset.

async fn read_directory( &mut self, fd: Resource<Descriptor>, ) -> FsResult<Resource<DirectoryEntryStream>>

Read directory entries from a directory.

async fn sync(&mut self, fd: Resource<Descriptor>) -> FsResult<()>

Synchronize the data and metadata of a file to disk.

async fn create_directory_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<()>

Create a directory.

async fn stat(&mut self, fd: Resource<Descriptor>) -> FsResult<DescriptorStat>

Return the attributes of an open file or directory.

async fn stat_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, ) -> FsResult<DescriptorStat>

Return the attributes of a file or directory.

async fn set_times_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, atim: NewTimestamp, mtim: NewTimestamp, ) -> FsResult<()>

Adjust the timestamps of a file or directory.

async fn link_at( &mut self, fd: Resource<Descriptor>, old_path_flags: PathFlags, old_path: String, new_descriptor: Resource<Descriptor>, new_path: String, ) -> FsResult<()>

Create a hard link.

async fn open_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, oflags: OpenFlags, flags: DescriptorFlags, ) -> FsResult<Resource<Descriptor>>

Open a file or directory.

fn drop(&mut self, fd: Resource<Descriptor>) -> Result<()>

async fn readlink_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<String>

Read the contents of a symbolic link.

async fn remove_directory_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<()>

Remove a directory.

async fn rename_at( &mut self, fd: Resource<Descriptor>, old_path: String, new_fd: Resource<Descriptor>, new_path: String, ) -> FsResult<()>

Rename a filesystem object.

async fn symlink_at( &mut self, fd: Resource<Descriptor>, src_path: String, dest_path: String, ) -> FsResult<()>

Create a symbolic link (also known as a “symlink”).

async fn unlink_file_at( &mut self, fd: Resource<Descriptor>, path: String, ) -> FsResult<()>

Unlink a filesystem object that is not a directory.

fn read_via_stream( &mut self, fd: Resource<Descriptor>, offset: Filesize, ) -> FsResult<Resource<DynInputStream>>

Return a stream for reading from a file, if available.

fn write_via_stream( &mut self, fd: Resource<Descriptor>, offset: Filesize, ) -> FsResult<Resource<DynOutputStream>>

Return a stream for writing to a file, if available.

fn append_via_stream( &mut self, fd: Resource<Descriptor>, ) -> FsResult<Resource<DynOutputStream>>

Return a stream for appending to a file, if available.

async fn is_same_object( &mut self, a: Resource<Descriptor>, b: Resource<Descriptor>, ) -> Result<bool>

Test whether two descriptors refer to the same filesystem object.

async fn metadata_hash( &mut self, fd: Resource<Descriptor>, ) -> FsResult<MetadataHashValue>

Return a hash of the metadata associated with a filesystem object referred to by a descriptor.

async fn metadata_hash_at( &mut self, fd: Resource<Descriptor>, path_flags: PathFlags, path: String, ) -> FsResult<MetadataHashValue>

Return a hash of the metadata associated with a filesystem object referred to by a directory descriptor and a relative path.

impl HostDirectoryEntryStream for WasiFilesystemCtxView<'_>

fn read_directory_entry( &mut self, stream: Resource<DirectoryEntryStream>, ) -> FsResult<Option<DirectoryEntry>>

Read a single directory entry from a directory-entry-stream.

fn drop(&mut self, stream: Resource<DirectoryEntryStream>) -> Result<()>

impl HostDirectoryEntryStream for WasiFilesystemCtxView<'_>

async fn read_directory_entry( &mut self, stream: Resource<DirectoryEntryStream>, ) -> FsResult<Option<DirectoryEntry>>

Read a single directory entry from a directory-entry-stream.

fn drop(&mut self, stream: Resource<DirectoryEntryStream>) -> Result<()>