Enum ubend::PipeSetup

pub enum PipeSetup {
    Inherit,
    Pipe,
    Null,
    Redirect(Target),
    Temp,
    FileDescr(c_int),
    FileName(String, Mode),
    File(File),
}

Setup a pipe.

Variants

Inherit

Inherit the stream from the parent process. This is the default for stderr and for stdin of the first process in the pipe chain.

Pipe

Open a pipe to the parent process or between processes. This is the default for stdout and for stdin of all but the first process in the pipe chain.

Null

Open a pipe to /dev/null.

Redirect(Target)

Redirect this stream to the specified target stream. Only stdout and stderr can be redirected this way and only to each other. If a stream is redirected to itself it is equivalent to [PipeSetup::Pipe].

Temp

Connect the stream to a temp file. If supported this is done via the operating systems native temp file support using the O_TMPFILE flag. Such a file is written to the hard disk, but has no name and will be deleted after the file handle to it is closed.

If the operating system or filesystem of /tmp does not support the O_TMPFILE flag the same behaviour is emulated by opening a new file using mkstemp() and then immediately unlink()ed.

FileDescr(c_int)

Connect the stream to the specified file descriptor. Note that error or not any passed file descriptor will be consumed (closed) by [Chain::new()].

FileName(String, Mode)

Connect the stream to the specified file using the specified mode.

File(File)

Connect the stream to the specified file. Note that error or not any passed file will be consumed (closed) by [Chain::new()].

Methods

impl PipeSetup

pub fn is_redirect(&self) -> bool

pub fn is_redirect_to(&self, target: Target) -> bool

pub fn is_inherit(&self) -> bool

pub fn is_pipe(&self) -> bool

pub fn is_null(&self) -> bool

pub fn is_temp(&self) -> bool

pub fn is_any_file(&self) -> bool

pub fn is_file(&self) -> bool

pub fn is_file_descr(&self) -> bool

pub fn is_file_name(&self) -> bool

impl PipeSetup

pub fn into_pipe_setup(self, mode: Mode) -> PipeSetup

Trait Implementations

impl Debug for PipeSetup

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

Formats the value using the given formatter.

impl IntoPipeSetup for PipeSetup

fn into_pipe_setup(self, mode: Mode) -> PipeSetup