+asmlinkage long sys_utimensat(int dfd, char __user *filename, struct timespec __user *utimes, int flags)
+{
+ struct timespec tstimes[2];
+
+ if (utimes) {
+ if (copy_from_user(&tstimes, utimes, sizeof(tstimes)))
+ return -EFAULT;
+ if ((tstimes[0].tv_nsec == UTIME_OMIT ||
+ tstimes[0].tv_nsec == UTIME_NOW) &&
+ tstimes[0].tv_sec != 0)
+ return -EINVAL;
+ if ((tstimes[1].tv_nsec == UTIME_OMIT ||
+ tstimes[1].tv_nsec == UTIME_NOW) &&
+ tstimes[1].tv_sec != 0)
+ return -EINVAL;
+
+ /* Nothing to do, we must not even check the path. */
+ if (tstimes[0].tv_nsec == UTIME_OMIT &&
+ tstimes[1].tv_nsec == UTIME_OMIT)
+ return 0;
+ }
+
+ return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags);
+}
+