[glibc] time: Introduce glibc's internal struct __itimerspec64

[Lukasz Majewski <lukma@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4b135425d889cb18b0fb3c3d166e115927042dda

commit 4b135425d889cb18b0fb3c3d166e115927042dda
Author: Lukasz Majewski <lukma@denx.de>
Date:   Tue Nov 5 12:44:26 2019 +0100

    time: Introduce glibc's internal struct __itimerspec64
    
    This change provides the glibc's internal struct itimerspec representation,
    which is explicitly supporting 64 bit time (by using struct __timespec64).
    
    Such representation is necessary to provide correct time after Y2038
    (time_t overflow) on devices with __TIMESIZE == 32.
    
    Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

Diff:
---
 include/time.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/time.h b/include/time.h
index c19c73a..1eb3d82 100644
--- a/include/time.h
+++ b/include/time.h
@@ -83,6 +83,17 @@ struct __timespec64
 #endif
 
 #if __TIMESIZE == 64
+# define __itimerspec64 itimerspec
+#else
+/* The glibc's internal representation of the struct itimerspec.  */
+struct __itimerspec64
+{
+  struct __timespec64 it_interval;
+  struct __timespec64 it_value;
+};
+#endif
+
+#if __TIMESIZE == 64
 # define __ctime64 ctime
 #else
 extern char *__ctime64 (const __time64_t *__timer) __THROW;