Enum file_descriptors::SpecialFileOpenError

pub enum SpecialFileOpenError {
    Common(CreationError),
    WouldBlock,
    Interrupted,
    InvalidPath(InvalidPathReason),
    Terminal(TerminalSettingsError),
}

An error that can occur when opening one end of a FIFO (a named pipe) or a character device.

Variants

Common(CreationError)

Errors common to opening or creation of most file descriptors.

WouldBlock

A (possibly mandatory) file lock is held on the special file path.

Rationally, this would not seem to make sense but the Linux documentation doesn't make it clear if it is possible or not.

If this is encountered then an orderly shutdown is probably the only course of action as it is not possible to epoll for lock status changes on files that haven't even be opened.

Interrupted

EINTR occurred; this can be handled by either re-trying the open of a FIFO or might actual be fatal depending on the signal handling strategy in use.

InvalidPath(InvalidPathReason)

Invalid path.

Terminal(TerminalSettingsError)

Not a terminal.

Trait Implementations

impl Clone for SpecialFileOpenError

fn clone(&self) -> SpecialFileOpenError

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SpecialFileOpenError

impl Debug for SpecialFileOpenError

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

Formats the value using the given formatter.

impl Display for SpecialFileOpenError

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

Formats the value using the given formatter.

impl Eq for SpecialFileOpenError

impl Error for SpecialFileOpenError

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

Deprecated since 1.42.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

fn cause(&self) -> Option<&dyn Error>

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Hash for SpecialFileOpenError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Ord for SpecialFileOpenError

fn cmp(&self, other: &SpecialFileOpenError) -> Ordering

This method returns an [Ordering] between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<SpecialFileOpenError> for SpecialFileOpenError

fn eq(&self, other: &SpecialFileOpenError) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &SpecialFileOpenError) -> bool

This method tests for !=.

impl PartialOrd<SpecialFileOpenError> for SpecialFileOpenError

fn partial_cmp(&self, other: &SpecialFileOpenError) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &SpecialFileOpenError) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &SpecialFileOpenError) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &SpecialFileOpenError) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &SpecialFileOpenError) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for SpecialFileOpenError

impl StructuralPartialEq for SpecialFileOpenError