Enum kernel::syscall::SyscallReturn
source · [−]pub enum SyscallReturn {
Show 18 variants
Failure(ErrorCode),
FailureU32(ErrorCode, u32),
FailureU32U32(ErrorCode, u32, u32),
FailureU64(ErrorCode, u64),
Success,
SuccessU32(u32),
SuccessU32U32(u32, u32),
SuccessU32U32U32(u32, u32, u32),
SuccessU64(u64),
SuccessU64U32(u64, u32),
AllowReadWriteSuccess(*mut u8, usize),
AllowReadWriteFailure(ErrorCode, *mut u8, usize),
UserspaceReadableAllowSuccess(*mut u8, usize),
UserspaceReadableAllowFailure(ErrorCode, *mut u8, usize),
AllowReadOnlySuccess(*const u8, usize),
AllowReadOnlyFailure(ErrorCode, *const u8, usize),
SubscribeSuccess(*const (), usize),
SubscribeFailure(ErrorCode, *const (), usize),
}
Expand description
Enumeration of the possible system call return variants specified in TRD104.
This struct operates over primitive types such as integers of
fixed length and pointers. It is constructed by the scheduler and
passed down to the architecture to be encoded into registers,
using the provided
encode_syscall_return
method.
Capsules do not use this struct. Capsules use higher level Rust
types
(e.g. ReadWriteProcessBuffer
and GrantKernelData
) or wrappers around this struct
(CommandReturn
) which limit the
available constructors to safely constructable variants.
Variants
Failure(ErrorCode)
Generic error case
FailureU32(ErrorCode, u32)
Generic error case, with an additional 32-bit data field
FailureU32U32(ErrorCode, u32, u32)
Generic error case, with two additional 32-bit data fields
FailureU64(ErrorCode, u64)
Generic error case, with an additional 64-bit data field
Success
Generic success case
SuccessU32(u32)
Generic success case, with an additional 32-bit data field
SuccessU32U32(u32, u32)
Generic success case, with two additional 32-bit data fields
SuccessU32U32U32(u32, u32, u32)
Generic success case, with three additional 32-bit data fields
SuccessU64(u64)
Generic success case, with an additional 64-bit data field
SuccessU64U32(u64, u32)
Generic success case, with an additional 32-bit and 64-bit data field
AllowReadWriteSuccess(*mut u8, usize)
Read/Write allow success case, returns the previous allowed buffer and size to the process.
AllowReadWriteFailure(ErrorCode, *mut u8, usize)
Read/Write allow failure case, returns the passed allowed buffer and size to the process.
UserspaceReadableAllowSuccess(*mut u8, usize)
Shared Read/Write allow success case, returns the previous allowed buffer and size to the process.
UserspaceReadableAllowFailure(ErrorCode, *mut u8, usize)
Shared Read/Write allow failure case, returns the passed allowed buffer and size to the process.
AllowReadOnlySuccess(*const u8, usize)
Read only allow success case, returns the previous allowed buffer and size to the process.
AllowReadOnlyFailure(ErrorCode, *const u8, usize)
Read only allow failure case, returns the passed allowed buffer and size to the process.
SubscribeSuccess(*const (), usize)
Subscribe success case, returns the previous upcall function pointer and application data.
SubscribeFailure(ErrorCode, *const (), usize)
Subscribe failure case, returns the passed upcall function pointer and application data.
Implementations
sourceimpl SyscallReturn
impl SyscallReturn
Trait Implementations
sourceimpl Clone for SyscallReturn
impl Clone for SyscallReturn
sourcefn clone(&self) -> SyscallReturn
fn clone(&self) -> SyscallReturn
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for SyscallReturn
impl Debug for SyscallReturn
impl Copy for SyscallReturn
Auto Trait Implementations
impl RefUnwindSafe for SyscallReturn
impl !Send for SyscallReturn
impl !Sync for SyscallReturn
impl Unpin for SyscallReturn
impl UnwindSafe for SyscallReturn
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more