Enum GuestCacheReaderError 

pub enum GuestCacheReaderError {
    BadMagic,
    UninitialisedDirectoryVa,
    NullPointer,
}

Failures from GuestCacheReader::new.

Variants

BadMagic

The BootInfo magic field didn’t match BootInfo::MAGIC.

UninitialisedDirectoryVa

The directory VA in BootInfo was zero — the guest hasn’t run init_directory_va yet. Call any RPC that triggers the init hook (e.g. nub_get_boot_info) and retry.

NullPointer

The directory VA was non-zero but, after the directory_va -> *mut GuestDirectory cast, resulted in a null pointer. Shouldn’t be observable in practice; covers the cast hazard for completeness.

Trait Implementations

impl Clone for GuestCacheReaderError

fn clone(&self) -> GuestCacheReaderError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GuestCacheReaderError

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

Formats the value using the given formatter.

impl Display for GuestCacheReaderError

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

Formats the value using the given formatter.

impl Error for GuestCacheReaderError

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

Returns 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, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl PartialEq for GuestCacheReaderError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for GuestCacheReaderError

impl Eq for GuestCacheReaderError

impl StructuralPartialEq for GuestCacheReaderError