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Subject[PATCH v3 01/22] linux/time64.h:Introduce the 'struct itimerspec64' for 64bit
Date
This patch introduces the 'struct itimerspec64' for 64bit to replace itimerspec,
and also introduces the conversion methods: itimerspec64_to_itimerspec() and
itimerspec_to_itimerspec64(), that makes itimerspec ready for 2038 year.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
include/linux/time64.h | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)

diff --git a/include/linux/time64.h b/include/linux/time64.h
index a383147..61dc4cb 100644
--- a/include/linux/time64.h
+++ b/include/linux/time64.h
@@ -11,11 +11,18 @@ typedef __s64 time64_t;
*/
#if __BITS_PER_LONG == 64
# define timespec64 timespec
+#define itimerspec64 itimerspec
#else
struct timespec64 {
time64_t tv_sec; /* seconds */
long tv_nsec; /* nanoseconds */
};
+
+struct itimerspec64 {
+ struct timespec64 it_interval; /* timer period */
+ struct timespec64 it_value; /* timer expiration */
+};
+
#endif

/* Parameters used to convert the timespec values: */
@@ -43,6 +50,16 @@ static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
return ts;
}

+static inline struct itimerspec itimerspec64_to_itimerspec(struct itimerspec64 *its64)
+{
+ return *its64;
+}
+
+static inline struct itimerspec64 itimerspec_to_itimerspec64(struct itimerspec *its)
+{
+ return *its;
+}
+
# define timespec64_equal timespec_equal
# define timespec64_compare timespec_compare
# define set_normalized_timespec64 set_normalized_timespec
@@ -75,6 +92,24 @@ static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
return ret;
}

+static inline struct itimerspec itimerspec64_to_itimerspec(struct itimerspec64 *its64)
+{
+ struct itimerspec ret;
+
+ ret.it_interval = timespec64_to_timespec(its64->it_interval);
+ ret.it_value = timespec64_to_timespec(its64->it_value);
+ return ret;
+}
+
+static inline struct itimerspec64 itimerspec_to_itimerspec64(struct itimerspec *its)
+{
+ struct itimerspec64 ret;
+
+ ret.it_interval = timespec_to_timespec64(its->it_interval);
+ ret.it_value = timespec_to_timespec64(its->it_value);
+ return ret;
+}
+
static inline int timespec64_equal(const struct timespec64 *a,
const struct timespec64 *b)
{
--
1.7.9.5


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