Struct HeaderV3 

pub struct HeaderV3 {
    pub kernel_size: u32,
    pub ramdisk_size: u32,
    pub osversionpatch: OsVersionPatch,
    pub cmdline: Box<[u8; 1536]>,
    pub v4_signature_size: Option<u32>,
}

Standard Android boot image header versions 3 and 4

The page size is always 4096 bytes.

Section layout in the image

Sections after the header are marked by fields of the form *_size, and are stored consecutively, padded to page size.

┌───────────────────────┐
│boot image header      │
│+ padding to page size │
├───────────────────────┤
│kernel                 │
│+ padding to page size │
├───────────────────────┤
│ramdisk                │
│+ padding to page size │
├───────────────────────┤
│boot signature (v4)    │
│+ padding to page size │
└───────────────────────┘

Fields

kernel_size: u32

Kernel size

ramdisk_size: u32

Ramdisk size

osversionpatch: OsVersionPatch

OS version and patch level

cmdline: Box<[u8; 1536]>

Kernel command line

v4_signature_size: Option<u32>

Boot signature size.

This is only present in version 4 and the version will be inferred from this field.

Implementations

impl HeaderV3

pub const fn header_version(&self) -> u32

Returns the boot image header’s version number.

pub const fn kernel_position() -> usize

Returns the kernel’s position in the boot image.

Hardcoded to the page size, which is 4096.

pub const fn ramdisk_position(&self) -> usize

Returns the ramdisk’s position in the boot image.

pub const fn bootsig_position(&self) -> usize

Returns the boot signature’s position in the boot image.

Note that this section is undefined in version 3.

Trait Implementations

impl BinRead for HeaderV3

type Args<'__binrw_generated_args_lifetime> = ()

The type used for the args parameter of read_args() and read_options().

fn read_options<R: Read + Seek>( __binrw_generated_var_reader: &mut R, __binrw_generated_var_endian: Endian, __binrw_generated_var_arguments: Self::Args<'_>, ) -> BinResult<Self>

Read Self from the reader using the given Endian and arguments.

fn read<R>(reader: &mut R) -> Result<Self, Error>

where R: Read + Seek, Self: ReadEndian, Self::Args<'a>: for<'a> Required,

Read Self from the reader using default arguments.

fn read_be<R>(reader: &mut R) -> Result<Self, Error>

where R: Read + Seek, Self::Args<'a>: for<'a> Required,

Read Self from the reader using default arguments and assuming big-endian byte order.

fn read_le<R>(reader: &mut R) -> Result<Self, Error>

where R: Read + Seek, Self::Args<'a>: for<'a> Required,

Read Self from the reader using default arguments and assuming little-endian byte order.

fn read_ne<R>(reader: &mut R) -> Result<Self, Error>

where R: Read + Seek, Self::Args<'a>: for<'a> Required,

Read T from the reader assuming native-endian byte order.

fn read_args<R>(reader: &mut R, args: Self::Args<'_>) -> Result<Self, Error>

where R: Read + Seek, Self: ReadEndian,

Read Self from the reader using the given arguments.

fn read_be_args<R>(reader: &mut R, args: Self::Args<'_>) -> Result<Self, Error>

where R: Read + Seek,

Read Self from the reader, assuming big-endian byte order, using the given arguments.

fn read_le_args<R>(reader: &mut R, args: Self::Args<'_>) -> Result<Self, Error>

where R: Read + Seek,

Read Self from the reader, assuming little-endian byte order, using the given arguments.

fn read_ne_args<R>(reader: &mut R, args: Self::Args<'_>) -> Result<Self, Error>

where R: Read + Seek,

Read T from the reader, assuming native-endian byte order, using the given arguments.

impl BinWrite for HeaderV3

type Args<'__binrw_generated_args_lifetime> = ()

The type used for the args parameter of write_args() and write_options().

fn write_options<W: Write + Seek>( &self, __binrw_generated_var_writer: &mut W, __binrw_generated_var_endian: Endian, __binrw_generated_var_arguments: Self::Args<'_>, ) -> BinResult<()>

Write Self to the writer using the given Endian and arguments.

fn write<W>(&self, writer: &mut W) -> Result<(), Error>

where W: Write + Seek, Self: WriteEndian, Self::Args<'a>: for<'a> Required,

Write Self to the writer using default arguments.

fn write_be<W>(&self, writer: &mut W) -> Result<(), Error>

where W: Write + Seek, Self::Args<'a>: for<'a> Required,

Write Self to the writer assuming big-endian byte order.

fn write_le<W>(&self, writer: &mut W) -> Result<(), Error>

where W: Write + Seek, Self::Args<'a>: for<'a> Required,

Write Self to the writer assuming little-endian byte order.

fn write_ne<W>(&self, writer: &mut W) -> Result<(), Error>

where W: Write + Seek, Self::Args<'a>: for<'a> Required,

Write Self to the writer assuming native-endian byte order.

fn write_args<W>( &self, writer: &mut W, args: Self::Args<'_>, ) -> Result<(), Error>

where W: Write + Seek, Self: WriteEndian,

Write Self to the writer using the given arguments.

fn write_be_args<W>( &self, writer: &mut W, args: Self::Args<'_>, ) -> Result<(), Error>

where W: Write + Seek,

Write Self to the writer, assuming big-endian byte order, using the given arguments.

fn write_le_args<W>( &self, writer: &mut W, args: Self::Args<'_>, ) -> Result<(), Error>

where W: Write + Seek,

Write Self to the writer, assuming little-endian byte order, using the given arguments.

fn write_ne_args<W>( &self, writer: &mut W, args: Self::Args<'_>, ) -> Result<(), Error>

where W: Write + Seek,

Write Self to the writer, assuming native-endian byte order, using the given arguments.

impl Clone for HeaderV3

fn clone(&self) -> HeaderV3

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HeaderV3

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

Formats the value using the given formatter.

impl Hash for HeaderV3

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for HeaderV3

fn eq(&self, other: &HeaderV3) -> 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 ReadEndian for HeaderV3

const ENDIAN: EndianKind

The endianness of the type.

impl ReadMagic for HeaderV3

const MAGIC: Self::MagicType

The magic number.

type MagicType = [u8; 8]

The type of the magic number.

impl WriteEndian for HeaderV3

const ENDIAN: EndianKind

The endianness of the type.

impl WriteMagic for HeaderV3

const MAGIC: Self::MagicType

The magic number.

type MagicType = [u8; 8]

The type of the magic number.

impl Eq for HeaderV3

impl StructuralPartialEq for HeaderV3