int compat_get_timeval(struct timeval *tv, const void __user *utv)
{
if (COMPAT_USE_64BIT_TIME)
- return copy_from_user(tv, utv, sizeof *tv) ? -EFAULT : 0;
+ return copy_from_user(tv, utv, sizeof(*tv)) ? -EFAULT : 0;
else
return __compat_get_timeval(tv, utv);
}
int compat_put_timeval(const struct timeval *tv, void __user *utv)
{
if (COMPAT_USE_64BIT_TIME)
- return copy_to_user(utv, tv, sizeof *tv) ? -EFAULT : 0;
+ return copy_to_user(utv, tv, sizeof(*tv)) ? -EFAULT : 0;
else
return __compat_put_timeval(tv, utv);
}
int compat_get_timespec(struct timespec *ts, const void __user *uts)
{
if (COMPAT_USE_64BIT_TIME)
- return copy_from_user(ts, uts, sizeof *ts) ? -EFAULT : 0;
+ return copy_from_user(ts, uts, sizeof(*ts)) ? -EFAULT : 0;
else
return __compat_get_timespec(ts, uts);
}
int compat_put_timespec(const struct timespec *ts, void __user *uts)
{
if (COMPAT_USE_64BIT_TIME)
- return copy_to_user(uts, ts, sizeof *ts) ? -EFAULT : 0;
+ return copy_to_user(uts, ts, sizeof(*ts)) ? -EFAULT : 0;
else
return __compat_put_timespec(ts, uts);
}
ret = hrtimer_nanosleep_restart(restart);
set_fs(oldfs);
- if (ret) {
+ if (ret == -ERESTART_RESTARTBLOCK) {
rmtp = restart->nanosleep.compat_rmtp;
if (rmtp && compat_put_timespec(&rmt, rmtp))
HRTIMER_MODE_REL, CLOCK_MONOTONIC);
set_fs(oldfs);
- if (ret) {
+ /*
+ * hrtimer_nanosleep() can only return 0 or
+ * -ERESTART_RESTARTBLOCK here because:
+ *
+ * - we call it with HRTIMER_MODE_REL and therefor exclude the
+ * -ERESTARTNOHAND return path.
+ *
+ * - we supply the rmtp argument from the task stack (due to
+ * the necessary compat conversion. So the update cannot
+ * fail, which excludes the -EFAULT return path as well. If
+ * it fails nevertheless we have a bigger problem and wont
+ * reach this place anymore.
+ *
+ * - if the return value is 0, we do not have to update rmtp
+ * because there is no remaining time.
+ *
+ * We check for -ERESTART_RESTARTBLOCK nevertheless if the
+ * core implementation decides to return random nonsense.
+ */
+ if (ret == -ERESTART_RESTARTBLOCK) {
struct restart_block *restart
= ¤t_thread_info()->restart_block;
if (rmtp && compat_put_timespec(&rmt, rmtp))
return -EFAULT;
}
-
return ret;
}