Struct libscmp::Error

pub struct Error { /* fields omitted */ }

Represents an error that could occur when interacting with libseccomp.

If the libseccomp function returns -ECANCELED, then code() will give the value of errno immediately after the call, and is_system() will return true.

Otherwise, code() will give the error code returned by libseccomp, and is_system() will return false.

Implementations

impl Error

pub fn code(&self) -> i32

Returns the raw OS error code (i.e. an errno value).

If is_system() returns true, this code comes from the kernel, and it indicates the underlying OS error that caused an operation to fail in a way that libseccomp couldn’t handle. Otherwise, it indicates a libseccomp error.

(Note: In some cases, if libseccomp fails with EEXIST, it may be translated to ENOENT here. libseccomp often returns EEXIST when ENOENT would be more appropriate, so this library translates it internally.)

pub fn is_system(&self) -> bool

Returns whether this is a system error instead of a libseccomp error.

(i.e. if this function returns true then a libseccomp function returned -ECANCELED.)

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a copy of the value.

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

Performs copy-assignment from source.

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, f: &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 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()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting