From 9c44c6a908339e6d6eafa3639e641d5caea5e1ee Mon Sep 17 00:00:00 2001
From: Lukasz Majewski <lukma@denx.de>
Date: Mon, 25 Mar 2019 08:38:02 +0100
Subject: y2038: Provide conversion helpers for struct __timespec64
Those functions allow easy conversion between Y2038 safe struct
__timespec64 and other time related data structures (like struct timeval
or struct timespec).
* include/time.h (valid_timeval_to_timespec64): Add.
* include/time.h (valid_timespec_to_timespec64): Likewise.
* include/time.h (valid_timespec64_to_timespec): Likewise.
* include/time.h (valid_timespec64_to_timeval): Likewise.
---
include/time.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
(limited to 'include/time.h')
diff --git a/include/time.h b/include/time.h
index 9727786..9878c2b 100644
--- a/include/time.h
+++ b/include/time.h
@@ -178,5 +178,54 @@ in_time_t_range (__time64_t t)
return s == t;
}
+/* Convert a known valid struct timeval into a struct __timespec64. */
+static inline struct __timespec64
+valid_timeval_to_timespec64 (const struct timeval tv)
+{
+ struct __timespec64 ts64;
+
+ ts64.tv_sec = tv.tv_sec;
+ ts64.tv_nsec = tv.tv_usec * 1000;
+
+ return ts64;
+}
+
+/* Convert a known valid struct timespec into a struct __timespec64. */
+static inline struct __timespec64
+valid_timespec_to_timespec64 (const struct timespec ts)
+{
+ struct __timespec64 ts64;
+
+ ts64.tv_sec = ts.tv_sec;
+ ts64.tv_nsec = ts.tv_nsec;
+
+ return ts64;
+}
+
+/* Convert a valid and within range of struct timespec, struct
+ __timespec64 into a struct timespec. */
+static inline struct timespec
+valid_timespec64_to_timespec (const struct __timespec64 ts64)
+{
+ struct timespec ts;
+
+ ts.tv_sec = (time_t) ts64.tv_sec;
+ ts.tv_nsec = ts64.tv_nsec;
+
+ return ts;
+}
+
+/* Convert a valid and within range of struct timeval struct
+ __timespec64 into a struct timeval. */
+static inline struct timeval
+valid_timespec64_to_timeval (const struct __timespec64 ts64)
+{
+ struct timeval tv;
+
+ tv.tv_sec = (time_t) ts64.tv_sec;
+ tv.tv_usec = ts64.tv_nsec / 1000;
+
+ return tv;
+}
#endif
#endif
--
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