Struct disk::qcow::QcowHeader

pub struct QcowHeader {

    pub magic: u32,
    pub version: u32,
    pub backing_file_offset: u64,
    pub backing_file_size: u32,
    pub cluster_bits: u32,
    pub size: u64,
    pub crypt_method: u32,
    pub l1_size: u32,
    pub l1_table_offset: u64,
    pub refcount_table_offset: u64,
    pub refcount_table_clusters: u32,
    pub nb_snapshots: u32,
    pub snapshots_offset: u64,
    pub incompatible_features: u64,
    pub compatible_features: u64,
    pub autoclear_features: u64,
    pub refcount_order: u32,
    pub header_size: u32,
    pub backing_file_path: Option<String>,
}

Contains the information from the header of a qcow file.

Fields

magic: u32

version: u32

backing_file_offset: u64

backing_file_size: u32

cluster_bits: u32

size: u64

crypt_method: u32

l1_size: u32

l1_table_offset: u64

refcount_table_offset: u64

refcount_table_clusters: u32

nb_snapshots: u32

snapshots_offset: u64

incompatible_features: u64

compatible_features: u64

autoclear_features: u64

refcount_order: u32

header_size: u32

backing_file_path: Option<String>

Implementations

impl QcowHeader

pub fn new(f: &mut File) -> Result<QcowHeader, Error>

Creates a QcowHeader from a reference to a file.

pub fn create_for_size_and_path( size: u64, backing_file: Option<&str> ) -> Result<QcowHeader, Error>

pub fn write_to<F: Write + Seek>(&self, file: &mut F) -> Result<(), Error>

Write the header to file.

Trait Implementations

impl Clone for QcowHeader

fn clone(&self) -> QcowHeader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for QcowHeader

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

Formats the value using the given formatter.