Struct FatFs 

pub struct FatFs<'a, B: BlockDevice> {
    block_dev: &'a mut B,
    bpb: Bpb,
}

Fields

block_dev: &'a mut B

bpb: Bpb

Implementations

impl<'a, B: BlockDevice> FatFs<'a, B>

pub fn new(block_dev: &'a mut B) -> Option<Self>

Mount a FAT32 filesystem from a block device.

fn read_sector_at( dev: &mut B, fat32_sector: u32, buf: &mut [u8; 512], kernel_block_size: usize, ) -> Option<()>

Read a FAT32 sector from a block device at any block size.

fn read_sector(&mut self, fat32_sector: u32, buf: &mut [u8; 512]) -> Option<()>

fn next_cluster(&mut self, cluster: u32) -> Option<u32>

Read the next cluster number from the FAT table.

fn read_chain( &mut self, start_cluster: u32, clusters_to_skip: u32, max_bytes: Option<usize>, ) -> Option<Vec<u8>>

Read a full cluster chain into a heap-allocated buffer.

Skips clusters_to_skip clusters at the start (for offset-based reads). Only reads max_bytes after the skip, if provided.

fn read_cluster_chain_alloc(&mut self, cluster: u32) -> Option<Vec<u8>>

Read a full cluster chain (from the start, no skip).

fn read_dir_entries(&mut self, cluster: u32) -> Option<Vec<DirEntry>>

Read raw directory entries from a cluster chain.

fn parse_dir_entries(&self, data: &[u8]) -> Option<Vec<DirEntry>>

Parse raw directory data into DirEntry items.

Handles:

• End-of-directory marker (0x00)
• Deleted entries (0xE5)
• LFN entries (attr == 0x0F)
• Volume ID entries (attr == 0x08)

fn resolve_path(&mut self, path: &str) -> Option<DirEntry>

Resolve a path to a directory entry.

pub fn read_file(&mut self, path: &str) -> Option<Vec<u8>>

Read a file by path, returning its contents.

pub fn list_dir(&mut self, path: &str) -> Option<Vec<DirEntry>>

List directory contents by path.