add configure check for Tru64 sub-second timestamp resolution

diff --git a/source3/configure.in b/source3/configure.in
index 87707a2f7f7c9580f508c85d736da3a4ef285fba..3ae2c8c9d37350bd8dcd33e6289a38bbe74ddba8 100644 (file)
--- a/source3/configure.in
+++ b/source3/configure.in
@@ -1474,6 +1474,46 @@ if test x"$samba_cv_stat_hires_notimespec_n" = x"yes" ; then
            [whether struct stat has sub-second timestamps without struct timespec suffixed _n])
 fi
 
+dnl Tru64 has _micro_second_ resolution:
+AC_CACHE_CHECK([whether struct stat has sub-second timestamps in st_uXtime], samba_cv_stat_hires_uxtime,
+    [
+       AC_TRY_COMPILE(
+           [
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+           ],
+           [
+               struct timespec t;
+               struct stat s = {0};
+               t.tv_sec = s.st_mtime;
+               t.tv_nsec = s.st_umtime * 1000;
+               t.tv_sec = s.st_ctime;
+               t.tv_nsec = s.st_uctime * 1000;
+               t.tv_sec = s.st_atime;
+               t.tv_nsec = s.st_uatime * 1000;
+           ],
+           samba_cv_stat_hires_uxtime=yes, samba_cv_stat_hires_uxtime=no)
+    ])
+
+if test x"$samba_cv_stat_hires_uxtime" = x"yes" ; then
+    AC_DEFINE(HAVE_STAT_ST_UMTIME, 1, [whether struct stat contains st_umtime])
+    AC_DEFINE(HAVE_STAT_ST_UATIME, 1, [whether struct stat contains st_uatime])
+    AC_DEFINE(HAVE_STAT_ST_UCTIME, 1, [whether struct stat contains st_uctime])
+    AC_DEFINE(HAVE_STAT_HIRES_TIMESTAMPS, 1,
+           [whether struct stat has sub-second timestamps in st_uXtime])
+fi
+
 AC_CACHE_CHECK([whether struct stat has st_birthtimespec], samba_cv_stat_st_birthtimespec,
     [
        AC_TRY_COMPILE(