//
// Open_Signal: C
//
DEVICE_CMD Open_Signal(REBREQ *req)
{
//RL_Print("Open_Signal\n");
sigset_t mask;
sigset_t overlap;
#ifdef CHECK_MASK_OVERLAP //doesn't work yet
if (sigprocmask(SIG_BLOCK, NULL, &mask) < 0) {
goto error;
}
if (sigandset(&overlap, &mask, &req->special.signal.mask) < 0) {
goto error;
}
if (!sigisemptyset(&overlap)) {
req->error = EBUSY;
return DR_ERROR;
}
#endif
if (sigprocmask(SIG_BLOCK, &req->special.signal.mask, NULL) < 0) {
goto error;
}
SET_OPEN(req);
Signal_Device(req, EVT_OPEN);
return DR_DONE;
error:
req->error = errno;
return DR_ERROR;
}
sigset_t sigset_and(sigset_t a, sigset_t b) {
int status;
sigset_t result;
status = sigemptyset(&result);
ASSUME(status, 0);
status = sigandset(&result, &a, &b);
ASSUME(status, 0);
return result;
}
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
RtSigSet RtSigSet::operator& (const RtSigSet& sigset)
{
RtSigSet result;
sigandset (&result, this, &sigset);
return result;
}