Struct uefi::data_types::Handle

#[repr(transparent)]
pub struct Handle(_);

Opaque handle to an UEFI entity (protocol, image…), guaranteed to be non-null.

If you need to have a nullable handle (for a custom UEFI FFI for example) use Option<Handle>.

Implementations

impl Handle

pub unsafe fn from_ptr(ptr: *mut c_void) -> Option<Self>

Creates a new Handle from a raw address. The address might come from the Multiboot2 information structure or something similar.

Example

use core::ffi::c_void;
use uefi::Handle;

let image_handle_addr = 0xdeadbeef as *mut c_void;

let uefi_image_handle = unsafe {
    Handle::from_ptr(image_handle_addr).expect("Pointer must not be null!")
};

Safety

This function is unsafe because the caller must be sure that the pointer is valid. Otherwise, further operations on the object might result in undefined behaviour, even if the methods aren’t marked as unsafe.

Trait Implementations

impl Clone for Handle

fn clone(&self) -> Handle

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Handle

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

Formats the value using the given formatter.

impl Copy for Handle