Struct BlockDev 

pub struct BlockDev { /* private fields */ }

A block device on the target operating system

Portability

• MacOS (darwin) will refuse to open block devices read-only if the file system is mounted, either giving “Resource busy” or “Operation not permitted” depending on which disk (external or internal) is opened. It is possible to use IoRegistryEntryCreateCFProperties to obtain details while the device is mounted, but this is not implemented.

Implementations

impl BlockDev

pub fn from_file(i: File) -> Result<BlockDev>

Examples found in repository

examples/blksz.rs (line 7)

fn show_blk<T: AsRef<::std::path::Path>>(p: T) -> Result<(), ::std::io::Error> {
    let f = std::fs::File::open(p.as_ref())?;
    let b = BlockDev::from_file(f)?;
    println!(
        "{:?}: block-size-logical: {:?}",
        p.as_ref(),
        b.block_size_logical()
    );
    println!("{:?}: block-count: {:?}", p.as_ref(), b.block_count());
    println!(
        "{:?}: block-size-physical: {:?}",
        p.as_ref(),
        b.block_size_physical()
    );
    Ok(())
}

Trait Implementations

impl BlockSize for BlockDev

fn block_size_physical(&self) -> Result<u64>

The number of bytes in each physical block

fn block_count(&self) -> Result<u64>

The total number of logical blocks

fn block_size_logical(&self) -> Result<u64>

The number of bytes in each logical block