Fat32BootSector

kernel::fs::vfs_v2::drivers::fat32::structures

Struct Fat32BootSector

#[repr(C, packed(1))]
pub struct Fat32BootSector {Show 29 fields
    pub jump_instruction: [u8; 3],
    pub oem_name: [u8; 8],
    pub bytes_per_sector: u16,
    pub sectors_per_cluster: u8,
    pub reserved_sectors: u16,
    pub fat_count: u8,
    pub max_root_entries: u16,
    pub total_sectors_16: u16,
    pub media_descriptor: u8,
    pub sectors_per_fat_16: u16,
    pub sectors_per_track: u16,
    pub heads: u16,
    pub hidden_sectors: u32,
    pub total_sectors_32: u32,
    pub sectors_per_fat: u32,
    pub extended_flags: u16,
    pub fs_version: u16,
    pub root_cluster: u32,
    pub fs_info_sector: u16,
    pub backup_boot_sector: u16,
    pub reserved: [u8; 12],
    pub drive_number: u8,
    pub reserved1: u8,
    pub boot_signature: u8,
    pub volume_serial: u32,
    pub volume_label: [u8; 11],
    pub fs_type: [u8; 8],
    pub boot_code: [u8; 420],
    pub signature: u16,
}

Expand description

FAT32 Boot Sector structure

This structure represents the boot sector (first sector) of a FAT32 filesystem. It contains essential information about the filesystem layout and parameters.

Fields§

§jump_instruction: [u8; 3]

Jump instruction (3 bytes)

§oem_name: [u8; 8]

OEM name (8 bytes)

§bytes_per_sector: u16

Bytes per sector (typically 512)

§sectors_per_cluster: u8

Sectors per cluster (must be power of 2)

§reserved_sectors: u16

Number of reserved sectors (including boot sector)

§fat_count: u8

Number of FAT copies (typically 2)

§max_root_entries: u16

Maximum number of root directory entries (0 for FAT32)

§total_sectors_16: u16

Total sectors (16-bit, 0 for FAT32)

§media_descriptor: u8

Media descriptor

§sectors_per_fat_16: u16

Sectors per FAT (16-bit, 0 for FAT32)

§sectors_per_track: u16

Sectors per track

§heads: u16

Number of heads

§hidden_sectors: u32

Hidden sectors

§total_sectors_32: u32

Total sectors (32-bit)

§sectors_per_fat: u32

Sectors per FAT (32-bit)

§extended_flags: u16

Extended flags

§fs_version: u16

Filesystem version

§root_cluster: u32

Root directory cluster number

§fs_info_sector: u16

Filesystem info sector number

§backup_boot_sector: u16

Backup boot sector location

§reserved: [u8; 12]

Reserved bytes

§drive_number: u8

Drive number

§reserved1: u8

Reserved

§boot_signature: u8

Boot signature

§volume_serial: u32

Volume serial number

§volume_label: [u8; 11]

Volume label

§fs_type: [u8; 8]

Filesystem type string

§boot_code: [u8; 420]

Boot code

§signature: u16

Boot sector signature (0xAA55)

Implementations§

impl Fat32BootSector

pub fn is_valid(&self) -> bool

Check if this is a valid FAT32 boot sector

pub fn total_sectors(&self) -> u32

Get the total number of sectors

pub fn first_data_sector(&self) -> u32

Calculate the first data sector

pub fn data_sectors(&self) -> u32

Calculate the number of data sectors

pub fn cluster_count(&self) -> u32

Calculate the number of clusters

Trait Implementations§

impl Clone for Fat32BootSector

fn clone(&self) -> Fat32BootSector

Returns a duplicate of the value. Read more

1.0.0§

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

Performs copy-assignment from source. Read more

impl Debug for Fat32BootSector

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

Formats the value using the given formatter. Read more

impl Copy for Fat32BootSector

Auto Trait Implementations§

impl Freeze for Fat32BootSector

impl RefUnwindSafe for Fat32BootSector

impl Send for Fat32BootSector

impl Sync for Fat32BootSector

impl Unpin for Fat32BootSector

impl UnwindSafe for Fat32BootSector

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.