Enum DumbError 

#[non_exhaustive]
pub enum DumbError {
    InvalidConfig {
        reason: &'static str,
    },
    UnsupportedFormat {
        fourcc: u32,
    },
    TooLarge {
        what: &'static str,
    },
    Io(Errno),
}

Errors from dumb-buffer allocation and framebuffer registration.

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.

InvalidConfig

Zero or out-of-range dimensions, a zero format or bpp, or a FourCC the drm crate does not recognize. errc::invalid_argument.

Fields

reason: &'static str

What was wrong.

UnsupportedFormat

The FourCC is not one Buffer::create_planar recognizes. errc::not_supported.

Callers can fall back to Buffer::create for single-plane formats.

Fields

fourcc: u32

The requested FourCC.

TooLarge

A size computation would not fit the kernel’s 32-bit field. errc::value_too_large.

Fields

what: &'static str

Which computation overflowed.

Io(Errno)

An ioctl or mmap failed.

Trait Implementations

impl Debug for DumbError

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

Formats the value using the given formatter.

impl Display for DumbError

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

Formats the value using the given formatter.

impl Error for DumbError

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<Errno> for DumbError

fn from(source: Errno) -> Self

Converts to this type from the input type.