/*
* Copy in the relative timeout provided by the application and convert it
* to an absolute timeout.
*/
static int
get_timeout(void *lx_timeout, timestruc_t *timeout)
{
timestruc_t now;
if (get_udatamodel() == DATAMODEL_NATIVE) {
if (copyin(lx_timeout, timeout, sizeof (timestruc_t)))
return (EFAULT);
}
#ifdef _SYSCALL32_IMPL
else {
timestruc32_t timeout32;
if (copyin(lx_timeout, &timeout32, sizeof (timestruc32_t)))
return (EFAULT);
timeout->tv_sec = (time_t)timeout32.tv_sec;
timeout->tv_nsec = timeout32.tv_nsec;
}
#endif
gethrestime(&now);
if (itimerspecfix(timeout))
return (EINVAL);
timespecadd(timeout, &now);
return (0);
}
/*
* Helper function for semop - copies in the provided timespec and
* computes the absolute future time after which we must return.
*/
static int
compute_timeout(timespec_t **tsp, timespec_t *ts, timespec_t *now,
timespec_t *timeout)
{
model_t datamodel = get_udatamodel();
if (datamodel == DATAMODEL_NATIVE) {
if (copyin(timeout, ts, sizeof (timespec_t)))
return (EFAULT);
} else {
timespec32_t ts32;
if (copyin(timeout, &ts32, sizeof (timespec32_t)))
return (EFAULT);
TIMESPEC32_TO_TIMESPEC(ts, &ts32)
}
if (itimerspecfix(ts))
return (EINVAL);
/*
* Convert the timespec value into absolute time.
*/
timespecadd(ts, now);
*tsp = ts;
return (0);
}
int
lwp_timer_copyin(lwp_timer_t *lwptp, timespec_t *tsp)
{
timespec_t now;
int error = 0;
if (tsp == NULL) /* not really an error, just need to bzero() */
goto err;
lwptp->lwpt_timecheck = timechanged; /* do this before gethrestime() */
gethrestime(&now); /* do this before copyin() */
if (curproc->p_model == DATAMODEL_NATIVE) {
if (copyin(tsp, &lwptp->lwpt_rqtime, sizeof (timespec_t))) {
error = EFAULT;
goto err;
}
} else {
timespec32_t ts32;
if (copyin(tsp, &ts32, sizeof (timespec32_t))) {
error = EFAULT;
goto err;
}
TIMESPEC32_TO_TIMESPEC(&lwptp->lwpt_rqtime, &ts32);
}
if (itimerspecfix(&lwptp->lwpt_rqtime)) {
error = EINVAL;
goto err;
}
/*
* Unless the requested timeout is zero,
* get the precise future (absolute) time at
* which we are to time out and return ETIME.
* We must not return ETIME before that time.
*/
if (lwptp->lwpt_rqtime.tv_sec == 0 && lwptp->lwpt_rqtime.tv_nsec == 0) {
bzero(lwptp, sizeof (lwp_timer_t));
lwptp->lwpt_imm_timeout = 1;
} else {
lwptp->lwpt_thread = curthread;
lwptp->lwpt_tsp = tsp;
lwptp->lwpt_time_error = 0;
lwptp->lwpt_id = 0;
lwptp->lwpt_imm_timeout = 0;
timespecadd(&lwptp->lwpt_rqtime, &now);
}
return (0);
err:
bzero(lwptp, sizeof (lwp_timer_t));
lwptp->lwpt_time_error = error;
return (error);
}