static long compat_nanosleep_restart(struct restart_block *restart)
{
- unsigned long expire = restart->arg0, now = jiffies;
struct compat_timespec __user *rmtp;
+ struct timespec rmt;
+ mm_segment_t oldfs;
+ long ret;
- /* Did it expire while we handled signals? */
- if (!time_after(expire, now))
- return 0;
-
- expire = schedule_timeout_interruptible(expire - now);
- if (expire == 0)
- return 0;
+ rmtp = (struct compat_timespec __user *)(restart->arg1);
+ restart->arg1 = (unsigned long)&rmt;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = hrtimer_nanosleep_restart(restart);
+ set_fs(oldfs);
- rmtp = (struct compat_timespec __user *)restart->arg1;
- if (rmtp) {
- struct compat_timespec ct;
- struct timespec t;
+ if (ret) {
+ restart->arg1 = (unsigned long)rmtp;
- jiffies_to_timespec(expire, &t);
- ct.tv_sec = t.tv_sec;
- ct.tv_nsec = t.tv_nsec;
- if (copy_to_user(rmtp, &ct, sizeof(ct)))
+ if (rmtp && put_compat_timespec(&rmt, rmtp))
return -EFAULT;
}
- /* The 'restart' block is already filled in */
- return -ERESTART_RESTARTBLOCK;
+
+ return ret;
}
asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
- struct compat_timespec __user *rmtp)
+ struct compat_timespec __user *rmtp)
{
- struct timespec t;
- struct restart_block *restart;
- unsigned long expire;
+ struct timespec tu, rmt;
+ mm_segment_t oldfs;
+ long ret;
- if (get_compat_timespec(&t, rqtp))
+ if (get_compat_timespec(&tu, rqtp))
return -EFAULT;
- if ((t.tv_nsec >= 1000000000L) || (t.tv_nsec < 0) || (t.tv_sec < 0))
+ if (!timespec_valid(&tu))
return -EINVAL;
- expire = timespec_to_jiffies(&t) + (t.tv_sec || t.tv_nsec);
- expire = schedule_timeout_interruptible(expire);
- if (expire == 0)
- return 0;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = hrtimer_nanosleep(&tu,
+ rmtp ? (struct timespec __user *)&rmt : NULL,
+ HRTIMER_MODE_REL, CLOCK_MONOTONIC);
+ set_fs(oldfs);
- if (rmtp) {
- jiffies_to_timespec(expire, &t);
- if (put_compat_timespec(&t, rmtp))
+ if (ret) {
+ struct restart_block *restart
+ = ¤t_thread_info()->restart_block;
+
+ restart->fn = compat_nanosleep_restart;
+ restart->arg1 = (unsigned long)rmtp;
+
+ if (rmtp && put_compat_timespec(&rmt, rmtp))
return -EFAULT;
}
- restart = ¤t_thread_info()->restart_block;
- restart->fn = compat_nanosleep_restart;
- restart->arg0 = jiffies + expire;
- restart->arg1 = (unsigned long) rmtp;
- return -ERESTART_RESTARTBLOCK;
+
+ return ret;
}
static inline long get_compat_itimerval(struct itimerval *o,