Struct selinux::seq_lock::SeqLock

pub struct SeqLock<H: AsBytes + NoCell, T: AsBytes + NoCell> { /* private fields */ }

Declare an instance of SeqLock by supplying header([H]) and value([T]) types, which should be configured with C-style layout & alignment. SeqLock will place a 32-bit atomic sequence number in-between the header and value, in a VMO.

Implementations

impl<H: AsBytes + Default + NoCell, T: AsBytes + Default + NoCell> SeqLock<H, T>

pub fn new_default() -> Result<Self, Status>

impl<H: AsBytes + NoCell, T: AsBytes + NoCell> SeqLock<H, T>

pub fn new(header: H, value: T) -> Result<Self, Status>

Returns an instance with initial values and a read-only VMO handle. May fail if the VMO backing the structure cannot be created, duplicated read-only, or mapped.

pub fn get_readonly_vmo(&self) -> Arc<Vmo>

Returns a read-only handle to the VMO containing the header, atomic sequence number, and value.

pub fn set_value(&mut self, value: T)

Updates the value held by this instance using the Seqlock pattern.

Trait Implementations

impl<H: AsBytes + NoCell, T: AsBytes + NoCell> Drop for SeqLock<H, T>

fn drop(&mut self)

Executes the destructor for this type.