time: introduce {get,put}_itimerspec64
As we change the user space type for the timerfd and posix timer
functions to newer data types, we need some form of conversion
helpers to avoid duplicating that logic.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/kernel/time/time.c b/kernel/time/time.c
index adb9853..44a8c14 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -918,3 +918,33 @@ int put_timespec64(const struct timespec64 *ts,
return copy_to_user(uts, &kts, sizeof(kts)) ? -EFAULT : 0;
}
EXPORT_SYMBOL_GPL(put_timespec64);
+
+int get_itimerspec64(struct itimerspec64 *it,
+ const struct itimerspec __user *uit)
+{
+ int ret;
+
+ ret = get_timespec64(&it->it_interval, &uit->it_interval);
+ if (ret)
+ return ret;
+
+ ret = get_timespec64(&it->it_value, &uit->it_value);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(get_itimerspec64);
+
+int put_itimerspec64(const struct itimerspec64 *it,
+ struct itimerspec __user *uit)
+{
+ int ret;
+
+ ret = put_timespec64(&it->it_interval, &uit->it_interval);
+ if (ret)
+ return ret;
+
+ ret = put_timespec64(&it->it_value, &uit->it_value);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(put_itimerspec64);
