linux: Add y2106 support on utimensat tests

The tests are refactored to use a common skeleton that handles whether
the underlying filesystem supports 64 bit time, skips 64 bit time
tests when the TU only supports 32 bit, and also skip 64 bit time
tests larger than 32 unsigned int (y2106) if the system does not
support it (MIPSn64 on kernels without statx support).

Checked on x86_64-linux-gnu and i686-linux-gnu.  I also checked
on a mips64el-linux-gnu with 4.1.4 and 5.10.0-4-5kc-malta kernel
to verify if the y2106 are indeed skipped.

1 files changed, 9 insertions, 54 deletions

diff --git a/sysdeps/unix/sysv/linux/tst-futimens.c b/sysdeps/unix/sysv/linux/tst-futimens.c
index 785cd87557..ac7a980017 100644
--- a/sysdeps/unix/sysv/linux/tst-futimens.c
+++ b/sysdeps/unix/sysv/linux/tst-futimens.c
@@ -16,57 +16,18 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <time.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
 #include <support/check.h>
-#include <support/support.h>
 #include <support/xunistd.h>
-#include <support/temp_file.h>
-
-static int temp_fd = -1;
-static char *testfile;
-
-/* struct timespec array with Y2038 threshold minus 2 and 1 seconds.  */
-const struct timespec t1[2] = { { 0x7FFFFFFE, 0 },  { 0x7FFFFFFF, 0 } };
-
-/* struct timespec array with Y2038 threshold plus 1 and 2 seconds.  */
-const struct timespec t2[2] = { { 0x80000001ULL, 0 },  { 0x80000002ULL, 0 } };
-
-/* struct timespec array around Y2038 threshold.  */
-const struct timespec t3[2] = { { 0x7FFFFFFE, 0 },  { 0x80000002ULL, 0 } };
-
-#define PREPARE do_prepare
-static void
-do_prepare (int argc, char *argv[])
-{
-  temp_fd = create_temp_file ("futimensat", &testfile);
-  TEST_VERIFY_EXIT (temp_fd > 0);
-}
+#include <sys/stat.h>
 
 static int
-test_futimens_helper (const struct timespec *ts)
+test_futimens_helper (const char *file, int fd, const struct timespec *ts)
 {
-  if (!support_path_support_time64 (testfile))
-    FAIL_UNSUPPORTED ("File %s does not support 64-bit timestamps",
-		      testfile);
-
-  struct stat64 st;
-  int result;
-  time_t t;
-
-  /* Check if we run on port with 32 bit time_t size */
-  if (__builtin_add_overflow (ts->tv_sec, 0, &t))
-    {
-      printf("time_t overflow!");
-      return 0;
-    }
-
-  result = futimens (temp_fd, ts);
+  int result = futimens (fd, ts);
   TEST_VERIFY_EXIT (result == 0);
 
-  xfstat (temp_fd, &st);
+  struct stat64 st;
+  xfstat (fd, &st);
 
   /* Check if seconds for atime match */
   TEST_COMPARE (st.st_atime, ts[0].tv_sec);
@@ -77,14 +38,8 @@ test_futimens_helper (const struct timespec *ts)
   return 0;
 }
 
-static int
-do_test (void)
-{
-  test_futimens_helper (&t1[0]);
-  test_futimens_helper (&t2[0]);
-  test_futimens_helper (&t3[0]);
-
-  return 0;
-}
+#define TEST_CALL(fname, fd, v1, v2) \
+  test_futimens_helper (fname, fd, (struct timespec[]) { { v1, 0 }, \
+							 { v2, 0 } })
 
-#include <support/test-driver.c>
+#include "tst-utimensat-skeleton.c"