Struct LoopDevice

pub struct LoopDevice { /* private fields */ }

Interface to a loop device itself, e.g. /dev/loop0.

Implementations

impl LoopDevice

pub fn open<P: AsRef<Path>>(dev: P) -> Result<Self>

Opens a loop device.

Errors

Any errors from opening the underlying physical loop device are bubbled up.

pub fn with(&self) -> AttachOptions<'_>

Attach a loop device to a file with the given options.

pub fn set_direct_io(&self, direct_io: bool) -> Result<()>

Enables or disables Direct I/O mode.

pub fn attach_file<P: AsRef<Path>>(&self, backing_file: P) -> Result<()>

Attach the loop device to a fully-mapped file.

pub fn path(&self) -> Option<PathBuf>

Get the path for the loop device.

pub fn detach(&self) -> Result<()>

Detach a loop device.

pub fn set_capacity(&self) -> Result<()>

Update a loop device’s capacity.

pub fn major(&self) -> Result<u32>

Return the major device node number.

pub fn minor(&self) -> Result<u32>

Return the minor device node number.

Trait Implementations

impl AsRawFd for LoopDevice

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Debug for LoopDevice

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

Formats the value using the given formatter.

impl IntoRawFd for LoopDevice

fn into_raw_fd(self) -> RawFd

Consumes this object, returning the raw underlying file descriptor.