add support for passing nano seconds (if arch supports it)

libc/sysdeps/linux/common/xstatconv.c

@@ -48,9 +48,14 @@ void __xstat_conv(struct kernel_stat *kbuf, struct stat *buf)
     buf->st_atime = kbuf->st_atime;
     buf->st_mtime = kbuf->st_mtime;
     buf->st_ctime = kbuf->st_ctime;
+#ifdef STAT_HAVE_NSEC
+	buf->st_atime_nsec = kbuf->st_atime_nsec;
+	buf->st_mtime_nsec = kbuf->st_mtime_nsec;
+	buf->st_ctime_nsec = kbuf->st_ctime_nsec;
+#endif
 }
 
-#if defined __UCLIBC_HAS_LFS__
+ #if defined(__UCLIBC_HAS_LFS__)
 void __xstat64_conv(struct kernel_stat64 *kbuf, struct stat64 *buf)
 {
     /* Convert to current kernel version of `struct stat64'.  */
@@ -70,6 +75,10 @@ void __xstat64_conv(struct kernel_stat64 *kbuf, struct stat64 *buf)
     buf->st_atime = kbuf->st_atime;
     buf->st_mtime = kbuf->st_mtime;
     buf->st_ctime = kbuf->st_ctime;
+#ifdef STAT_HAVE_NSEC
+	buf->st_atime_nsec = kbuf->st_atime_nsec;
+	buf->st_mtime_nsec = kbuf->st_mtime_nsec;
+	buf->st_ctime_nsec = kbuf->st_ctime_nsec;
+#endif
 }
 #endif
-