Struct wasmtime_wasi::virtfs::InMemoryFile

pub struct InMemoryFile { /* private fields */ }

An InMemoryFile is a shared handle to some underlying data. The relationship is analagous to a filesystem wherein a file descriptor is one view into a possibly-shared underlying collection of data and permissions on a filesystem.

Implementations

impl InMemoryFile

pub fn memory_backed() -> InMemoryFile

pub fn new(contents: Box<dyn FileContents + 'static, Global>) -> InMemoryFile

Trait Implementations

impl Handle for InMemoryFile

pub fn as_any(&self) -> &(dyn Any + 'static)

pub fn try_clone(&self) -> Result<Box<dyn Handle + 'static, Global>, Error>

pub fn get_file_type(&self) -> Filetype

pub fn get_rights(&self) -> HandleRights

pub fn set_rights(&self, rights: HandleRights)

pub fn advise(
    &self,
    _advice: Advice,
    _offset: u64,
    _len: u64
) -> Result<(), Error>

pub fn allocate(&self, offset: u64, len: u64) -> Result<(), Error>

pub fn fdstat_get(&self) -> Result<Fdflags, Error>

pub fn fdstat_set_flags(&self, fdflags: Fdflags) -> Result<(), Error>

pub fn filestat_get(&self) -> Result<Filestat, Error>

pub fn filestat_set_size(&self, st_size: u64) -> Result<(), Error>

pub fn preadv(
    &self,
    buf: &mut [IoSliceMut<'_>],
    offset: u64
) -> Result<usize, Error>

pub fn pwritev(&self, buf: &[IoSlice<'_>], offset: u64) -> Result<usize, Error>

pub fn read_vectored(&self, iovs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>

pub fn seek(&self, offset: SeekFrom) -> Result<u64, Error>

pub fn write_vectored(&self, iovs: &[IoSlice<'_>]) -> Result<usize, Error>

pub fn create_directory(&self, _path: &str) -> Result<(), Error>

pub fn openat(
    &self,
    path: &str,
    _read: bool,
    _write: bool,
    oflags: Oflags,
    _fd_flags: Fdflags
) -> Result<Box<dyn Handle + 'static, Global>, Error>

pub fn link(
    &self,
    _old_path: &str,
    _new_handle: Box<dyn Handle + 'static, Global>,
    _new_path: &str,
    _follow: bool
) -> Result<(), Error>

pub fn readlink(&self, _path: &str, _buf: &mut [u8]) -> Result<usize, Error>

pub fn readlinkat(&self, _path: &str) -> Result<String, Error>

pub fn rename(
    &self,
    _old_path: &str,
    _new_handle: Box<dyn Handle + 'static, Global>,
    _new_path: &str
) -> Result<(), Error>

pub fn remove_directory(&self, _path: &str) -> Result<(), Error>

pub fn symlink(&self, _old_path: &str, _new_path: &str) -> Result<(), Error>

pub fn unlink_file(&self, _path: &str) -> Result<(), Error>

fn is_directory(&self) -> bool

fn is_tty(&self) -> bool

Test whether this descriptor is considered a tty within WASI. Note that since WASI itself lacks an isatty syscall and relies on a conservative approximation, we use the same approximation here.

fn datasync(&self) -> Result<(), Error>

fn filestat_set_times(
    &self,
    _atim: u64,
    _mtim: u64,
    _fst_flags: Fstflags
) -> Result<(), Error>

fn readdir(
    &'a self,
    _cookie: u64
) -> Result<Box<dyn Iterator<Item = Result<(Dirent, String), Error>> + 'a, Global>, Error>

fn sync(&self) -> Result<(), Error>

fn filestat_get_at(&self, _path: &str, _follow: bool) -> Result<Filestat, Error>

fn filestat_set_times_at(
    &self,
    _path: &str,
    _atim: u64,
    _mtim: u64,
    _fst_flags: Fstflags,
    _follow: bool
) -> Result<(), Error>