Enum userfaultfd::Error

pub enum Error {
    CopyFailed(Errno),
    PartiallyCopied(usize),
    IncompleteMsg {
        read: usize,
        expected: usize,
    },
    SystemError(Error),
    ReadEof,
    UnrecognizedEvent(u8),
    UnrecognizedIoctls(u64),
    UnsupportedIoctls(IoctlFlags),
    ZeropageFailed(Errno),
}

Errors for this crate.

Several of these errors contain an underlying Errno value; see userfaultfd(2) and ioctl_userfaultfd(2) for more details on how to interpret these errors.

Variants

CopyFailed(Errno)

Copy ioctl failure with errno value.

PartiallyCopied(usize)

Copy ioctl failure with copied length.

IncompleteMsg

Fields

read: usize

expected: usize

Failure to read a full uffd_msg struct from the underlying file descriptor.

SystemError(Error)

Generic system error.

ReadEof

End-of-file was read from the underlying file descriptor.

UnrecognizedEvent(u8)

An unrecognized event code was found in a uffd_msg struct.

UnrecognizedIoctls(u64)

An unrecognized ioctl bit was set in the result of API initialization or registration.

UnsupportedIoctls(IoctlFlags)

Requested ioctls were not available when initializing the API.

ZeropageFailed(Errno)

Zeropage ioctl failure with errno value.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

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

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

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

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

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, demand: &mut Demand<'a>)

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

Provides type based access to context intended for error reports.

impl From<Errno> for Error

fn from(e: Error) -> Error

Converts to this type from the input type.