/// <summary>
/// Sets a signal handler
/// </summary>
/// <param name="sig">The signal number</param>
/// <param name="handler">The handler</param>
/// <returns>The errorcode</returns>
public static unsafe ErrorCode SetSigHandler(Signal sig, SignalAction.SigAction *newact, SignalAction.SigAction *oldact)
{
if (sig == Signal.SIGKILL || sig == Signal.SIGSTOP)
{
return(ErrorCode.EINVAL);
}
if (newact == null)
{
return(ErrorCode.EFAULT);
}
return(Tasking.CurrentTask.SetSignalHandler(sig, newact, oldact));
}
/// <summary>
/// Sets the signal handler of a signal
/// </summary>
/// <param name="signal">The signal</param>
/// <param name="newact">The new action</param>
/// <param name="oldact">The old action</param>
/// <returns>The errorcode</returns>
public unsafe ErrorCode SetSignalHandler(Signal signal, SignalAction.SigAction *newact, SignalAction.SigAction *oldact)
{
if (signal <= 0 || (int)signal >= Signals.NSIG)
{
return(ErrorCode.EINVAL);
}
SignalAction action = m_signalActions[(int)signal];
// If the handler is NULL, remove this action
if (newact->Handler == null)
{
m_signalActions[(int)signal] = null;
if (action != null)
{
Heap.Free(action);
}
return(ErrorCode.SUCCESS);
}
// If the action is NULL, allocate new signal action
if (action == null)
{
m_signalActions[(int)signal] = action = new SignalAction((int)signal);
}
// Copy to old action
if (oldact != null)
{
fixed(SignalAction.SigAction *ptr = &action.Sigaction)
Memory.Memcpy(oldact, ptr, sizeof(SignalAction.SigAction));
}
// Set new action
fixed(SignalAction.SigAction *ptr = &action.Sigaction)
Memory.Memcpy(ptr, newact, sizeof(SignalAction.SigAction));
return(ErrorCode.SUCCESS);
}
