contur::SyscallTable Class Reference

Dispatch table mapping SyscallId to handler functions. More...

#include <syscall_table.h>

Public Types
using	HandlerFn = std::function<Result<RegisterValue>(std::span<const RegisterValue>, ProcessImage &)>
	Function signature used for syscall handlers.

Public Member Functions
	SyscallTable ()
	~SyscallTable ()
	SyscallTable (const SyscallTable &)=delete
SyscallTable &	operator= (const SyscallTable &)=delete
	SyscallTable (SyscallTable &&) noexcept
SyscallTable &	operator= (SyscallTable &&) noexcept
Result< void >	registerHandler (SyscallId id, HandlerFn handler)
	Registers/replaces a function handler for syscall id.
Result< void >	registerHandler (SyscallId id, ISyscallHandler &handler)
	Registers/replaces an interface-based handler for syscall id.
Result< void >	unregisterHandler (SyscallId id)
	Unregisters a handler for syscall id.
Result< RegisterValue >	dispatch (SyscallId id, std::span< const RegisterValue > args, ProcessImage &caller) const
	Dispatches syscall to registered handler.
bool	hasHandler (SyscallId id) const noexcept
	Returns true when id has a registered handler.
std::size_t	handlerCount () const noexcept
	Number of registered handlers.

Private Attributes
std::unique_ptr< Impl >	impl_

Detailed Description

Dispatch table mapping SyscallId to handler functions.

Definition at line 21 of file syscall_table.h.

Member Typedef Documentation

HandlerFn

using contur::SyscallTable::HandlerFn = std::function<Result<RegisterValue>(std::span<const RegisterValue>, ProcessImage &)>

Function signature used for syscall handlers.

Definition at line 25 of file syscall_table.h.

Constructor & Destructor Documentation

SyscallTable() [1/3]

contur::SyscallTable::SyscallTable

(

)

~SyscallTable()

contur::SyscallTable::~SyscallTable

(

)

SyscallTable() [2/3]

contur::SyscallTable::SyscallTable ( const SyscallTable & )

delete

SyscallTable() [3/3]

contur::SyscallTable::SyscallTable ( SyscallTable && )

noexcept

Member Function Documentation

dispatch()

Result< RegisterValue > contur::SyscallTable::dispatch ( SyscallId id, std::span< const RegisterValue > args, ProcessImage & caller ) const

nodiscard

Dispatches syscall to registered handler.

Returns

Handler result or NotFound when no handler is registered.

handlerCount()

std::size_t contur::SyscallTable::handlerCount ( ) const

nodiscardnoexcept

Number of registered handlers.

hasHandler()

bool contur::SyscallTable::hasHandler ( SyscallId id ) const

nodiscardnoexcept

Returns true when id has a registered handler.

operator=() [1/2]

SyscallTable & contur::SyscallTable::operator= ( const SyscallTable & )

delete

operator=() [2/2]

SyscallTable & contur::SyscallTable::operator= ( SyscallTable && )

noexcept

registerHandler() [1/2]

Result< void > contur::SyscallTable::registerHandler ( SyscallId id, HandlerFn handler )

nodiscard

Registers/replaces a function handler for syscall id.

Returns

Ok on success, InvalidArgument for empty function.

registerHandler() [2/2]

Result< void > contur::SyscallTable::registerHandler ( SyscallId id, ISyscallHandler & handler )

nodiscard

Registers/replaces an interface-based handler for syscall id.

The table stores a lightweight wrapper that forwards to handler.

unregisterHandler()

Result< void > contur::SyscallTable::unregisterHandler ( SyscallId id )

nodiscard

Unregisters a handler for syscall id.

Returns

Ok on success or NotFound.

Member Data Documentation

impl_

std::unique_ptr<Impl> contur::SyscallTable::impl_

private

Definition at line 61 of file syscall_table.h.

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The documentation for this class was generated from the following file:

• include/contur/syscall/syscall_table.h