[PATCH v6 1/3] y2038: include: Move struct __timespec64 definition to a separate file

[Lukasz Majewski]

The struct __timespec64's definition has been moved from ./include/time.h to
./include/struct___timespec64.h.

This change would prevent from polluting other glibc namespaces (when
headers are modified to support 64 bit time on architectures with
__WORDSIZE==32).

Now it is possible to just include definition of this particular structure
when needed.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

---
Changes for v6:
- Add _STRUCT_TIMESPEC64_H guard instead of _TIMESPEC64
- Fix preprocessor directives indentation

Changes for v5:
- Move struct___timespec64.h from include/bits/types to include

Changes for v4:
- None

Changes for v3:
- Rebase to the newest glibc's - master

Changes for v2:
- New patch - as suggested by Andreas Schwab
---
 include/struct___timespec64.h | 27 +++++++++++++++++++++++++++
 include/time.h                | 24 +-----------------------
 2 files changed, 28 insertions(+), 23 deletions(-)
 create mode 100644 include/struct___timespec64.h

diff --git a/include/struct___timespec64.h b/include/struct___timespec64.h
new file mode 100644
index 0000000000..9abb25c8f7
--- /dev/null
+++ b/include/struct___timespec64.h
@@ -0,0 +1,27 @@
+#ifndef _STRUCT_TIMESPEC64_H
+#define _STRUCT_TIMESPEC64_H
+
+#if __TIMESIZE == 64
+# define __timespec64 timespec
+#else
+#include <endian.h>
+/* The glibc Y2038-proof struct __timespec64 structure for a time value.
+   To keep things Posix-ish, we keep the nanoseconds field a 32-bit
+   signed long, but since the Linux field is a 64-bit signed int, we
+   pad our tv_nsec with a 32-bit unnamed bit-field padding.
+
+   As a general rule the Linux kernel is ignoring upper 32 bits of
+   tv_nsec field.  */
+struct __timespec64
+{
+  __time64_t tv_sec;         /* Seconds */
+# if BYTE_ORDER == BIG_ENDIAN
+  __int32_t :32;             /* Padding */
+  __int32_t tv_nsec;         /* Nanoseconds */
+# else
+  __int32_t tv_nsec;         /* Nanoseconds */
+  __int32_t :32;             /* Padding */
+# endif
+};
+#endif
+#endif /* _STRUCT_TIMESPEC64_H  */
diff --git a/include/time.h b/include/time.h
index 4522fe9c4f..1c103a4cb2 100644
--- a/include/time.h
+++ b/include/time.h
@@ -3,11 +3,11 @@
 
 #ifndef _ISOMAC
 # include <bits/types/struct_timeval.h>
+# include <struct___timespec64.h>
 # include <bits/types/locale_t.h>
 # include <stdbool.h>
 # include <time/mktime-internal.h>
 # include <sys/time.h>
-# include <endian.h>
 # include <time-clockid.h>
 # include <sys/time.h>
 
@@ -61,28 +61,6 @@ extern void __tzset_parse_tz (const char *tz) attribute_hidden;
 extern void __tz_compute (__time64_t timer, struct tm *tm, int use_localtime)
   __THROW attribute_hidden;
 
-#if __TIMESIZE == 64
-# define __timespec64 timespec
-#else
-/* The glibc Y2038-proof struct __timespec64 structure for a time value.
-   To keep things Posix-ish, we keep the nanoseconds field a 32-bit
-   signed long, but since the Linux field is a 64-bit signed int, we
-   pad our tv_nsec with a 32-bit unnamed bit-field padding.
-
-   As a general rule the Linux kernel is ignoring upper 32 bits of
-   tv_nsec field.  */
-struct __timespec64
-{
-  __time64_t tv_sec;         /* Seconds */
-# if BYTE_ORDER == BIG_ENDIAN
-  __int32_t :32;             /* Padding */
-  __int32_t tv_nsec;         /* Nanoseconds */
-# else
-  __int32_t tv_nsec;         /* Nanoseconds */
-  __int32_t :32;             /* Padding */
-# endif
-};
-#endif
 
 #if __TIMESIZE == 64
 # define __itimerspec64 itimerspec
-- 
2.20.1