SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
const struct __kernel_timespec __user *, tp)
{
struct timespec64 new_tp;
if (which_clock != CLOCK_REALTIME)
return -EINVAL;
if (get_timespec64(&new_tp, tp))
return -EFAULT;
return do_sys_settimeofday64(&new_tp, NULL);
}
SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
const struct timespec __user *, tp)
{
struct timespec64 new_tp64;
struct timespec new_tp;
if (which_clock != CLOCK_REALTIME)
return -EINVAL;
if (copy_from_user(&new_tp, tp, sizeof (*tp)))
return -EFAULT;
new_tp64 = timespec_to_timespec64(new_tp);
return do_sys_settimeofday64(&new_tp64, NULL);
}
SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, struct __kernel_timespec __user *, tp)
{
struct timespec64 rtn_tp = {
.tv_sec = 0,
.tv_nsec = hrtimer_resolution,
};
switch (which_clock) {
case CLOCK_REALTIME:
case CLOCK_MONOTONIC:
case CLOCK_BOOTTIME:
if (put_timespec64(&rtn_tp, tp))
return -EFAULT;
return 0;
default:
return -EINVAL;
}
}
SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
const struct __kernel_timespec __user *, rqtp,
struct __kernel_timespec __user *, rmtp)
{
struct timespec64 t;
switch (which_clock) {
case CLOCK_REALTIME:
case CLOCK_MONOTONIC:
case CLOCK_BOOTTIME:
break;
default:
return -EINVAL;
}
if (get_timespec64(&t, rqtp))
return -EFAULT;
if (!timespec64_valid(&t))
return -EINVAL;
if (flags & TIMER_ABSTIME)
rmtp = NULL;
current->restart_block.nanosleep.type = rmtp ? TT_NATIVE : TT_NONE;
current->restart_block.nanosleep.rmtp = rmtp;
return hrtimer_nanosleep(&t, flags & TIMER_ABSTIME ?
HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
which_clock);
}
#ifdef CONFIG_COMPAT
COMPAT_SYS_NI(timer_create);
COMPAT_SYS_NI(getitimer);
COMPAT_SYS_NI(setitimer);
#endif
#ifdef CONFIG_COMPAT_32BIT_TIME
SYS_NI(timer_settime32);
SYS_NI(timer_gettime32);
SYSCALL_DEFINE2(clock_settime32, const clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
struct timespec64 new_tp;
if (which_clock != CLOCK_REALTIME)
return -EINVAL;
if (get_old_timespec32(&new_tp, tp))
return -EFAULT;
return do_sys_settimeofday64(&new_tp, NULL);
}
SYSCALL_DEFINE2(clock_gettime32, clockid_t, which_clock,
struct old_timespec32 __user *, tp)
{
int ret;
struct timespec64 kernel_tp;
ret = do_clock_gettime(which_clock, &kernel_tp);
if (ret)
return ret;
if (put_old_timespec32(&kernel_tp, tp))
return -EFAULT;
return 0;
}