#include <sys/param.h>
#include <sys/resourcevar.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/proc_internal.h>
#include <sys/kauth.h>
#include <sys/vnode.h>
#include <sys/mount_internal.h>
#include <sys/sysproto.h>
#include <sys/signalvar.h>
#include <kern/clock.h>
#include <kern/thread_call.h>
#define HZ 100
lck_spin_t * tz_slock;
lck_grp_t * tz_slock_grp;
lck_attr_t * tz_slock_attr;
lck_grp_attr_t *tz_slock_grp_attr;
static void setthetime(
struct timeval *tv);
void time_zone_slock_init(void);
int gettimeofday(struct proc *p,
#ifdef __ppc__
struct ppc_gettimeofday_args *uap,
#else
struct gettimeofday_args *uap,
#endif
register_t *retval);
int
gettimeofday(__unused struct proc *p,
#ifdef __ppc__
register struct ppc_gettimeofday_args *uap,
#else
register struct gettimeofday_args *uap,
#endif
__unused register_t *retval)
{
struct timeval atv;
int error = 0;
struct timezone ltz;
if (uap->tp) {
clock_get_calendar_microtime((uint32_t *)&atv.tv_sec, &atv.tv_usec);
if (IS_64BIT_PROCESS(p)) {
struct user_timeval user_atv;
user_atv.tv_sec = atv.tv_sec;
user_atv.tv_usec = atv.tv_usec;
error = copyout(&user_atv, CAST_USER_ADDR_T(uap->tp), sizeof(struct user_timeval));
} else {
error = copyout(&atv, CAST_USER_ADDR_T(uap->tp), sizeof(struct timeval));
}
if (error)
return(error);
}
if (uap->tzp) {
lck_spin_lock(tz_slock);
ltz = tz;
lck_spin_unlock(tz_slock);
error = copyout((caddr_t)<z, CAST_USER_ADDR_T(uap->tzp),
sizeof (tz));
}
return(error);
}
int
settimeofday(struct proc *p, struct settimeofday_args *uap, __unused register_t *retval)
{
struct timeval atv;
struct timezone atz;
int error;
if ((error = suser(kauth_cred_get(), &p->p_acflag)))
return (error);
if (uap->tv) {
if (IS_64BIT_PROCESS(p)) {
struct user_timeval user_atv;
error = copyin(uap->tv, &user_atv, sizeof(struct user_timeval));
atv.tv_sec = user_atv.tv_sec;
atv.tv_usec = user_atv.tv_usec;
} else {
error = copyin(uap->tv, &atv, sizeof(struct timeval));
}
if (error)
return (error);
}
if (uap->tzp && (error = copyin(uap->tzp, (caddr_t)&atz, sizeof(atz))))
return (error);
if (uap->tv) {
timevalfix(&atv);
if (atv.tv_sec < 0 || (atv.tv_sec == 0 && atv.tv_usec < 0))
return (EPERM);
setthetime(&atv);
}
if (uap->tzp) {
lck_spin_lock(tz_slock);
tz = atz;
lck_spin_unlock(tz_slock);
}
return (0);
}
static void
setthetime(
struct timeval *tv)
{
clock_set_calendar_microtime(tv->tv_sec, tv->tv_usec);
}
int
adjtime(struct proc *p, register struct adjtime_args *uap, __unused register_t *retval)
{
struct timeval atv;
int error;
if ((error = suser(kauth_cred_get(), &p->p_acflag)))
return (error);
if (IS_64BIT_PROCESS(p)) {
struct user_timeval user_atv;
error = copyin(uap->delta, &user_atv, sizeof(struct user_timeval));
atv.tv_sec = user_atv.tv_sec;
atv.tv_usec = user_atv.tv_usec;
} else {
error = copyin(uap->delta, &atv, sizeof(struct timeval));
}
if (error)
return (error);
clock_adjtime((int32_t *)&atv.tv_sec, &atv.tv_usec);
if (uap->olddelta) {
if (IS_64BIT_PROCESS(p)) {
struct user_timeval user_atv;
user_atv.tv_sec = atv.tv_sec;
user_atv.tv_usec = atv.tv_usec;
error = copyout(&user_atv, uap->olddelta, sizeof(struct user_timeval));
} else {
error = copyout(&atv, uap->olddelta, sizeof(struct timeval));
}
}
return (0);
}
void
inittodr(
__unused time_t base)
{
struct timeval tv;
microtime(&tv);
if (tv.tv_sec < 0 || tv.tv_usec < 0) {
printf ("WARNING: preposterous time in Real Time Clock");
tv.tv_sec = 0;
tv.tv_usec = 0;
setthetime(&tv);
printf(" -- CHECK AND RESET THE DATE!\n");
}
}
time_t
boottime_sec(void)
{
uint32_t sec, nanosec;
clock_get_boottime_nanotime(&sec, &nanosec);
return (sec);
}
uint64_t tvtoabstime(struct timeval *tvp);
int
getitimer(struct proc *p, register struct getitimer_args *uap, __unused register_t *retval)
{
struct itimerval aitv;
if (uap->which > ITIMER_PROF)
return(EINVAL);
if (uap->which == ITIMER_REAL) {
aitv = p->p_realtimer;
if (timerisset(&p->p_rtime)) {
struct timeval now;
microuptime(&now);
if (timercmp(&p->p_rtime, &now, <))
timerclear(&aitv.it_value);
else {
aitv.it_value = p->p_rtime;
timevalsub(&aitv.it_value, &now);
}
}
else
timerclear(&aitv.it_value);
}
else
aitv = p->p_stats->p_timer[uap->which];
if (IS_64BIT_PROCESS(p)) {
struct user_itimerval user_itv;
user_itv.it_interval.tv_sec = aitv.it_interval.tv_sec;
user_itv.it_interval.tv_usec = aitv.it_interval.tv_usec;
user_itv.it_value.tv_sec = aitv.it_value.tv_sec;
user_itv.it_value.tv_usec = aitv.it_value.tv_usec;
return (copyout((caddr_t)&user_itv, uap->itv, sizeof (struct user_itimerval)));
} else {
return (copyout((caddr_t)&aitv, uap->itv, sizeof (struct itimerval)));
}
}
int
setitimer(p, uap, retval)
struct proc *p;
register struct setitimer_args *uap;
register_t *retval;
{
struct itimerval aitv;
user_addr_t itvp;
int error;
if (uap->which > ITIMER_PROF)
return (EINVAL);
if ((itvp = uap->itv)) {
if (IS_64BIT_PROCESS(p)) {
struct user_itimerval user_itv;
if ((error = copyin(itvp, (caddr_t)&user_itv, sizeof (struct user_itimerval))))
return (error);
aitv.it_interval.tv_sec = user_itv.it_interval.tv_sec;
aitv.it_interval.tv_usec = user_itv.it_interval.tv_usec;
aitv.it_value.tv_sec = user_itv.it_value.tv_sec;
aitv.it_value.tv_usec = user_itv.it_value.tv_usec;
} else {
if ((error = copyin(itvp, (caddr_t)&aitv, sizeof (struct itimerval))))
return (error);
}
}
if ((uap->itv = uap->oitv) && (error = getitimer(p, (struct getitimer_args *)uap, retval)))
return (error);
if (itvp == 0)
return (0);
if (itimerfix(&aitv.it_value) || itimerfix(&aitv.it_interval))
return (EINVAL);
if (uap->which == ITIMER_REAL) {
thread_call_func_cancel((thread_call_func_t)realitexpire, (void *)p->p_pid, FALSE);
if (timerisset(&aitv.it_value)) {
microuptime(&p->p_rtime);
timevaladd(&p->p_rtime, &aitv.it_value);
thread_call_func_delayed(
(thread_call_func_t)realitexpire, (void *)p->p_pid,
tvtoabstime(&p->p_rtime));
}
else
timerclear(&p->p_rtime);
p->p_realtimer = aitv;
}
else
p->p_stats->p_timer[uap->which] = aitv;
return (0);
}
void
realitexpire(
void *pid)
{
register struct proc *p;
struct timeval now;
boolean_t funnel_state;
funnel_state = thread_funnel_set(kernel_flock, TRUE);
p = pfind((pid_t)pid);
if (p == NULL) {
(void) thread_funnel_set(kernel_flock, FALSE);
return;
}
if (!timerisset(&p->p_realtimer.it_interval)) {
timerclear(&p->p_rtime);
psignal(p, SIGALRM);
(void) thread_funnel_set(kernel_flock, FALSE);
return;
}
microuptime(&now);
timevaladd(&p->p_rtime, &p->p_realtimer.it_interval);
if (timercmp(&p->p_rtime, &now, <=)) {
if ((p->p_rtime.tv_sec + 2) >= now.tv_sec) {
for (;;) {
timevaladd(&p->p_rtime, &p->p_realtimer.it_interval);
if (timercmp(&p->p_rtime, &now, >))
break;
}
}
else {
p->p_rtime = p->p_realtimer.it_interval;
timevaladd(&p->p_rtime, &now);
}
}
psignal(p, SIGALRM);
thread_call_func_delayed((thread_call_func_t)realitexpire, pid, tvtoabstime(&p->p_rtime));
(void) thread_funnel_set(kernel_flock, FALSE);
}
int
itimerfix(tv)
struct timeval *tv;
{
if (tv->tv_sec < 0 || tv->tv_sec > 100000000 ||
tv->tv_usec < 0 || tv->tv_usec >= 1000000)
return (EINVAL);
if (tv->tv_sec == 0 && tv->tv_usec != 0 && tv->tv_usec < tick)
tv->tv_usec = tick;
return (0);
}
int
itimerdecr(itp, usec)
register struct itimerval *itp;
int usec;
{
if (itp->it_value.tv_usec < usec) {
if (itp->it_value.tv_sec == 0) {
usec -= itp->it_value.tv_usec;
goto expire;
}
itp->it_value.tv_usec += 1000000;
itp->it_value.tv_sec--;
}
itp->it_value.tv_usec -= usec;
usec = 0;
if (timerisset(&itp->it_value))
return (1);
expire:
if (timerisset(&itp->it_interval)) {
itp->it_value = itp->it_interval;
itp->it_value.tv_usec -= usec;
if (itp->it_value.tv_usec < 0) {
itp->it_value.tv_usec += 1000000;
itp->it_value.tv_sec--;
}
} else
itp->it_value.tv_usec = 0;
return (0);
}
void
timevaladd(
struct timeval *t1,
struct timeval *t2)
{
t1->tv_sec += t2->tv_sec;
t1->tv_usec += t2->tv_usec;
timevalfix(t1);
}
void
timevalsub(
struct timeval *t1,
struct timeval *t2)
{
t1->tv_sec -= t2->tv_sec;
t1->tv_usec -= t2->tv_usec;
timevalfix(t1);
}
void
timevalfix(
struct timeval *t1)
{
if (t1->tv_usec < 0) {
t1->tv_sec--;
t1->tv_usec += 1000000;
}
if (t1->tv_usec >= 1000000) {
t1->tv_sec++;
t1->tv_usec -= 1000000;
}
}
void
microtime(
struct timeval *tvp)
{
clock_get_calendar_microtime((uint32_t *)&tvp->tv_sec, &tvp->tv_usec);
}
void
microuptime(
struct timeval *tvp)
{
clock_get_system_microtime((uint32_t *)&tvp->tv_sec, &tvp->tv_usec);
}
void
nanotime(
struct timespec *tsp)
{
clock_get_calendar_nanotime((uint32_t *)&tsp->tv_sec, (uint32_t *)&tsp->tv_nsec);
}
void
nanouptime(
struct timespec *tsp)
{
clock_get_system_nanotime((uint32_t *)&tsp->tv_sec, (uint32_t *)&tsp->tv_nsec);
}
uint64_t
tvtoabstime(
struct timeval *tvp)
{
uint64_t result, usresult;
clock_interval_to_absolutetime_interval(
tvp->tv_sec, NSEC_PER_SEC, &result);
clock_interval_to_absolutetime_interval(
tvp->tv_usec, NSEC_PER_USEC, &usresult);
return (result + usresult);
}
void
time_zone_slock_init(void)
{
tz_slock_grp_attr = lck_grp_attr_alloc_init();
lck_grp_attr_setstat(tz_slock_grp_attr);
tz_slock_grp = lck_grp_alloc_init("tzlock", tz_slock_grp_attr);
tz_slock_attr = lck_attr_alloc_init();
tz_slock = lck_spin_alloc_init(tz_slock_grp, tz_slock_attr);
}