Enum FbdevError 

#[non_exhaustive]
pub enum FbdevError {
    NoDevice,
    Open {
        path: PathBuf,
        source: Error,
    },
    Sysfs {
        path: PathBuf,
        source: Error,
    },
    Geometry(FbInfoError),
    Map(Error),
    TooSmall {
        required: usize,
        actual: usize,
    },
}

Something went wrong driving /dev/fbN.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NoDevice

No /dev/fb* node exists.

Expected on a modern kernel: fbdev is optional, and where it does exist it is usually DRM’s emulation layer rather than a driver of its own.

Open

The device node could not be opened.

Writing to a framebuffer needs the video group, or root.

Fields

path: PathBuf

The device that failed.

source: Error

The underlying failure.

Sysfs

A sysfs attribute could not be read.

Fields

path: PathBuf

The attribute that failed.

source: Error

The underlying failure.

Geometry(FbInfoError)

The geometry could not be understood.

Map(Error)

The framebuffer could not be mapped into this process.

TooSmall

The mapping is smaller than the reported geometry needs.

Fields

required: usize

Bytes the geometry requires.

actual: usize

Bytes actually mapped.

Trait Implementations

impl Debug for FbdevError

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

Formats the value using the given formatter.

impl Display for FbdevError

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

Formats the value using the given formatter.

impl Error for FbdevError

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 From<FbInfoError> for FbdevError

fn from(source: FbInfoError) -> Self

Converts to this type from the input type.

impl From<FbdevError> for SurfaceError

fn from(err: FbdevError) -> Self

Converts to this type from the input type.