Struct BootdevTag

#[repr(C, align(8))]
pub struct BootdevTag { /* private fields */ }

The end tag ends the information struct.

Implementations

impl BootdevTag

pub fn new(biosdev: u32, slice: u32, part: u32) -> Self

Creates a new tag.

pub const fn biosdev(&self) -> u32

Returns the bios device from which the device was booted from. 0x00 represents the first floppy disk. 0x80 represents the first hard disk, 0x81 the second hard disk, and so on.

pub const fn slice(&self) -> u32

The slice field identifies the partition (also known as a “slice” in BSD terminology) on the BIOS device from which the operating system was booted.

pub const fn part(&self) -> u32

The part field denotes the subpartition or logical partition within the primary partition (if applicable) from which the operating system was booted.

Trait Implementations

impl Debug for BootdevTag

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

Formats the value using the given formatter.

impl MaybeDynSized for BootdevTag

const BASE_SIZE: usize = 24usize

The true base size of the struct without any implicit or additional padding. Note that size_of::<T>() isn’t sufficient, as for example the type could have three u32 fields, which would add an implicit u32 padding. However, this constant must always fulfill BASE_SIZE >= size_of::<Self::Header>().

type Header = TagHeader

The associated Header of this tag.

fn dst_len(_: &TagHeader)

Returns the amount of items in the dynamically sized portion of the DST. Note that this is not the amount of bytes. So if the dynamically sized portion is 16 bytes in size and each element is 4 bytes big, then this function must return 4.

fn header(&self) -> &Self::Header

Returns the corresponding Header.

fn payload(&self) -> &[u8]

Returns the payload, i.e., all memory that is not occupied by the Header of the type.

fn as_bytes(&self) -> BytesRef<'_, Self::Header>

Returns the whole allocated bytes for this structure encapsulated in BytesRef. This includes padding bytes. To only get the “true” tag data, read the tag size from Self::header and create a sub slice.

fn as_ptr(&self) -> *const Self::Header

Returns a pointer to this structure.

impl Tag for BootdevTag

const ID: TagType = TagType::Bootdev

The ID of this tag. This should be unique across all implementors.

type IDType = TagType

The ID type that identifies the tag.