Enum unshare::Fd

pub enum Fd {
    ReadPipe,
    WritePipe,
    Inherit,
    ReadNull,
    WriteNull,
    Fd(Closing),
    RawFd(RawFd),
}

An enumeration that is used to configure non-stdio file descriptors. It differs from stdio one because we must differentiate from readable and writable file descriptors for things open by the library

The enumeration members might be non-stable, it's better to use one of the constructors to create an instance

Variants

ReadPipeWritePipeInheritReadNullWriteNullFd(Closing)RawFd(RawFd)

Methods

impl Fd

fn piped_read() -> Fd

Create a pipe so that child can read from it

fn piped_write() -> Fd

Create a pipe so that child can write to it

fn inherit() -> Fd

Inherit the child descriptor from parent

Not very useful for custom file descriptors better use from_file()

fn read_null() -> Fd

Create a readable pipe that always has end of file condition

fn write_null() -> Fd

Create a writable pipe that ignores all the input

fn dup_file<F: AsRawFd>(file: &F) -> Result<Fd>

A simpler helper method for from_raw_fd, that does dup of file descriptor, so is actually safe to use (but can fail)

fn from_file<F: IntoRawFd>(file: F) -> Fd

A simpler helper method for from_raw_fd, that consumes file

Trait Implementations

impl FromRawFd for Fd

unsafe fn from_raw_fd(fd: RawFd) -> Fd

Constructs a new instances of Self from the given raw file descriptor.