Struct capsules_core::rng::RngDriver

pub struct RngDriver<'a, R: Rng<'a>> { /* private fields */ }

Implementations

impl<'a, R: Rng<'a>> RngDriver<'a, R>

pub fn new( rng: &'a R, grant: Grant<App, UpcallCount<1>, AllowRoCount<0>, AllowRwCount<{ rw_allow::COUNT }>> ) -> Self

Trait Implementations

impl<'a, R: Rng<'a>> Client for RngDriver<'a, R>

fn randomness_available( &self, randomness: &mut dyn Iterator<Item = u32>, _error: Result<(), ErrorCode> ) -> Continue

Called by the (RNG)[trait.RNG.html] when there are one or more random numbers available

impl<'a, R: Rng<'a>> SyscallDriver for RngDriver<'a, R>

fn command( &self, command_num: usize, data: usize, _: usize, processid: ProcessId ) -> CommandReturn

System call for a process to perform a short synchronous operation or start a long-running split-phase operation (whose completion is signaled with an upcall). Command 0 is a reserved command to detect if a peripheral system call driver is installed and must always return a CommandReturn::Success.

fn allocate_grant(&self, processid: ProcessId) -> Result<(), Error>

Request to allocate a capsule’s grant for a specific process.

fn allow_userspace_readable( &self, app: ProcessId, which: usize, slice: ReadWriteProcessBuffer ) -> Result<ReadWriteProcessBuffer, (ReadWriteProcessBuffer, ErrorCode)>

System call for a process to pass a buffer (a UserspaceReadableProcessBuffer) to the kernel that the kernel can either read or write. The kernel calls this method only after it checks that the entire buffer is within memory the process can both read and write.