Struct SyscallReturnTest 

pub struct SyscallReturnTest { /* private fields */ }

Implementations

impl SyscallReturnTest

pub fn new( grant: Grant<App, UpcallCount<1>, AllowRoCount<1>, AllowRwCount<1>>, ) -> Self

Trait Implementations

impl SyscallDriver for SyscallReturnTest

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

Accept or reject an allow-userspace-readable buffer.

which 0: accept — swap the incoming buffer with whatever was stored previously (initially empty) and return the old one to userspace. Any other which value: reject with NOSUPPORT.

fn command( &self, command_num: usize, _r2: usize, _r3: usize, _process_id: 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, process_id: ProcessId) -> Result<(), Error>

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