y2038: Add test coverage

It is enabled through a new rule, tests-y2038, which is built only
when the ABI supports the comapt 64-bit time_t (defined by the
header time64-compat.h, which also enables the creation of the
symbol Version for Linux).  It means the tests are not built
for ABI which already provide default 64-bit time_t.

The new rule already adds the required LFS and 64-bit time_t
compiler flags.

The current coverage is:

  * libc:
    - adjtime                       tst-adjtime-time64
    - adjtimex                      tst-adjtimex-time64
    - clock_adjtime                 tst-clock_adjtime-time64
    - clock_getres                  tst-clock-time64, tst-cpuclock1-time64
    - clock_gettime                 tst-clock-time64, tst-clock2-time64,
				    tst-cpuclock1-time64
    - clock_nanosleep               tst-clock_nanosleep-time64,
				    tst-cpuclock1-time64
    - clock_settime                 tst-clock2-time64
    - cnd_timedwait                 tst-cnd-timedwait-time64
    - ctime                         tst-ctime-time64
    - ctime_r                       tst-ctime-time64
    - difftime                      tst-difftime-time64
    - fstat                         tst-stat-time64
    - fstatat                       tst-stat-time64
    - futimens                      tst-futimens-time64
    - futimes                       tst-futimes-time64
    - futimesat                     tst-futimesat-time64
    - fts_*                         tst-fts-time64
    - getitimer                     tst-itimer-timer64
    - getrusage
    - gettimeofday                  tst-clock_nanosleep-time64
    - glob / globfree               tst-gnuglob64-time64
    - gmtime                        tst-gmtime-time64
    - gmtime_r                      tst-gmtime-time64
    - lstat                         tst-stat-time64
    - localtime                     tst-y2039-time64
    - localtime_t                   tst-y2039-time64
    - lutimes                       tst-lutimes-time64
    - mktime                        tst-mktime4-time64
    - mq_timedreceive               tst-mqueue{1248}-time64
    - mq_timedsend                  tst-mqueue{1248}-time64
    - msgctl                        test-sysvmsg-time64
    - mtx_timedlock                 tst-mtx-timedlock-time64
    - nanosleep                     tst-cpuclock{12}-time64,
				    tst-mqueue8-time64, tst-clock-time64
    - nftw / ftw                    ftwtest-time64
    - ntp_adjtime                   tst-ntp_adjtime-time64
    - ntp_gettime                   tst-ntp_gettime-time64
    - ntp_gettimex                  tst-ntp_gettimex-time64
    - ppoll                         tst-ppoll-time64
    - pselect                       tst-pselect-time64
    - pthread_clockjoin_np          tst-join14-time64
    - pthread_cond_clockwait        tst-cond11-time64
    - pthread_cond_timedwait        tst-abstime-time64
    - pthread_mutex_clocklock       tst-abstime-time64
    - pthread_mutex_timedlock       tst-abstime-time64
    - pthread_rwlock_clockrdlock    tst-abstime-time64, tst-rwlock14-time64
    - pthread_rwlock_clockwrlock    tst-abstime-time64, tst-rwlock14-time64
    - pthread_rwlock_timedrdlock    tst-abstime-time64, tst-rwlock14-time64
    - pthread_rwlock_timedwrlock    tst-abstime-time64, tst-rwlock14-time64
    - pthread_timedjoin_np          tst-join14-time64
    - recvmmsg                      tst-cancel4_2-time64
    - sched_rr_get_interval         tst-sched_rr_get_interval-time64
    - select                        tst-select-time64
    - sem_clockwait                 tst-sem5-time64
    - sem_timedwait                 tst-sem5-time64
    - semctl                        test-sysvsem-time64
    - semtimedop                    test-sysvsem-time64
    - setitimer                     tst-mqueue2-time64, tst-itimer-timer64
    - settimeofday                  tst-settimeofday-time64
    - shmctl                        test-sysvshm-time64
    - sigtimedwait                  tst-sigtimedwait-time64
    - stat                          tst-stat-time64
    - thrd_sleep                    tst-thrd-sleep-time64
    - time                          tst-mqueue{1248}-time64
    - timegm                        tst-timegm-time64
    - timer_gettime                 tst-timer4-time64
    - timer_settime                 tst-timer4-time64
    - timerfd_gettime               tst-timerfd-time64
    - timerfd_settime               tst-timerfd-time64
    - timespec_get                  tst-timespec_get-time64
    - timespec_getres               tst-timespec_getres-time64
    - utime                         tst-utime-time64
    - utimensat                     tst-utimensat-time64
    - utimes                        tst-utimes-time64
    - wait3                         tst-wait3-time64
    - wait4                         tst-wait4-time64

  * librt:
    - aio_suspend                   tst-aio6-time64
    - mq_timedreceive               tst-mqueue{1248}-time64
    - mq_timedsend                  tst-mqueue{1248}-time64
    - timer_gettime                 tst-timer4-time64
    - timer_settime                 tst-timer4-time64

  * libanl:
    - gai_suspend

Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>

18 files changed, 209 insertions, 26 deletions

diff --git a/io/Makefile b/io/Makefile
index d35e966..ba8bd37 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -59,7 +59,7 @@ routines :=								\
 	ftw64-time64
 
 others		:= pwd
-test-srcs	:= ftwtest
+test-srcs	:= ftwtest ftwtest-time64
 tests		:= test-utime test-stat test-stat2 test-lfs tst-getcwd \
 		   tst-fcntl bug-ftw1 bug-ftw2 bug-ftw3 bug-ftw4 tst-statvfs \
 		   tst-openat tst-unlinkat tst-fstatat tst-futimesat \
@@ -78,12 +78,24 @@ tests		:= test-utime test-stat test-stat2 test-lfs tst-getcwd \
 		   tst-futimens \
 		   tst-utimensat \
 
+tests-time64 := \
+  tst-futimens-time64 \
+  tst-futimes-time64\
+  tst-fts-time64 \
+  tst-lutimes-time64 \
+  tst-stat-time64 \
+  tst-futimesat-time64 \
+  tst-utime-time64 \
+  tst-utimensat-time64 \
+  tst-utimes-time64 \
+
 # Likewise for statx, but we do not need static linking here.
 tests-internal += tst-statx
 tests-static += tst-statx
 
 ifeq ($(run-built-tests),yes)
-tests-special += $(objpfx)ftwtest.out
+tests-special += $(objpfx)ftwtest.out \
+		 $(objpfx)ftwtest-time64.out
 endif
 
 include ../Rules
@@ -125,8 +137,14 @@ tst-statvfs-ARGS = $(objpfx)tst-statvfs tst-statvfs.c /tmp
 
 tst-open-tmpfile-ARGS = --test-dir=$(objpfx)
 
+CFLAGS-ftwtest-time64.c += -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64
+
 ifeq ($(run-built-tests),yes)
 $(objpfx)ftwtest.out: ftwtest-sh $(objpfx)ftwtest
 	$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
 	$(evaluate-test)
+
+$(objpfx)ftwtest-time64.out: ftwtest-sh $(objpfx)ftwtest-time64
+	$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
+	$(evaluate-test)
 endif
diff --git a/io/ftwtest-time64.c b/io/ftwtest-time64.c
new file mode 100644
index 0000000..67f1c46
--- /dev/null
+++ b/io/ftwtest-time64.c
@@ -0,0 +1 @@
+#include "ftwtest.c"
diff --git a/io/tst-fts-time64.c b/io/tst-fts-time64.c
new file mode 100644
index 0000000..a4a41fe
--- /dev/null
+++ b/io/tst-fts-time64.c
@@ -0,0 +1 @@
+#include "tst-fts.c"
diff --git a/io/tst-futimens-time64.c b/io/tst-futimens-time64.c
new file mode 100644
index 0000000..88fcb38
--- /dev/null
+++ b/io/tst-futimens-time64.c
@@ -0,0 +1,2 @@
+#define struct_stat struct stat
+#include "tst-futimens.c"
diff --git a/io/tst-futimens.c b/io/tst-futimens.c
index b3e3f31..4c18ede 100644
--- a/io/tst-futimens.c
+++ b/io/tst-futimens.c
@@ -20,13 +20,17 @@
 #include <support/xunistd.h>
 #include <sys/stat.h>
 
+#ifndef struct_stat
+# define struct_stat struct stat64
+#endif
+
 static int
 test_futimens_helper (const char *file, int fd, const struct timespec *ts)
 {
   int result = futimens (fd, ts);
   TEST_VERIFY_EXIT (result == 0);
 
-  struct stat64 st;
+  struct_stat st;
   xfstat (fd, &st);
 
   /* Check if seconds for atime match */
diff --git a/io/tst-futimes-time64.c b/io/tst-futimes-time64.c
new file mode 100644
index 0000000..d489c26
--- /dev/null
+++ b/io/tst-futimes-time64.c
@@ -0,0 +1,2 @@
+#define struct_stat struct stat
+#include "tst-futimes.c"
diff --git a/io/tst-futimes.c b/io/tst-futimes.c
index bdef38d..9575a4b 100644
--- a/io/tst-futimes.c
+++ b/io/tst-futimes.c
@@ -21,13 +21,17 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 
+#ifndef struct_stat
+# define struct_stat struct stat64
+#endif
+
 static int
 test_futimens_helper (const char *file, int fd, const struct timeval *tv)
 {
   int r = futimes (fd, tv);
   TEST_VERIFY_EXIT (r == 0);
 
-  struct stat64 st;
+  struct_stat st;
   xfstat (fd, &st);
 
   /* Check if seconds for atime match */
diff --git a/io/tst-futimesat-time64.c b/io/tst-futimesat-time64.c
new file mode 100644
index 0000000..f6c0500
--- /dev/null
+++ b/io/tst-futimesat-time64.c
@@ -0,0 +1,4 @@
+#define struct_stat  struct stat
+#define fstat        fstat
+#define fstatat      fstatat
+#include "io/tst-futimesat.c"
diff --git a/io/tst-futimesat.c b/io/tst-futimesat.c
index af58ad0..c32ab2b 100644
--- a/io/tst-futimesat.c
+++ b/io/tst-futimesat.c
@@ -1,4 +1,23 @@
+/* futimesat basic tests.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
 #include <dirent.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -7,19 +26,19 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 
+#include <support/test-driver.h>
+#include <support/temp_file.h>
 
-static void prepare (void);
-#define PREPARE(argc, argv) prepare ()
-
-static int do_test (void);
-#define TEST_FUNCTION do_test ()
-
-#include "../test-skeleton.c"
+#ifndef struct_stat
+# define struct_stat struct stat64
+# define fstat       fstat64
+# define fstatat     fstatat64
+#endif
 
 static int dir_fd;
 
 static void
-prepare (void)
+prepare (int argc, char *argv[])
 {
   size_t test_dir_len = strlen (test_dir);
   static const char dir_name[] = "/tst-futimesat.XXXXXX";
@@ -48,7 +67,7 @@ prepare (void)
       exit (1);
     }
 }
-
+#define PREPARE prepare
 
 static int
 do_test (void)
@@ -98,8 +117,8 @@ do_test (void)
   write (fd, "hello", 5);
   puts ("file created");
 
-  struct stat64 st1;
-  if (fstat64 (fd, &st1) != 0)
+  struct_stat st1;
+  if (fstat (fd, &st1) != 0)
     {
       puts ("fstat64 failed");
       return 1;
@@ -118,8 +137,8 @@ do_test (void)
       return 1;
     }
 
-  struct stat64 st2;
-  if (fstatat64 (dir_fd, "some-file", &st2, 0) != 0)
+  struct_stat st2;
+  if (fstatat (dir_fd, "some-file", &st2, 0) != 0)
     {
       puts ("fstatat64 failed");
       return 1;
@@ -146,3 +165,5 @@ do_test (void)
 
   return 0;
 }
+
+#include <support/test-driver.c>
diff --git a/io/tst-lutimes-time64.c b/io/tst-lutimes-time64.c
new file mode 100644
index 0000000..06caec0
--- /dev/null
+++ b/io/tst-lutimes-time64.c
@@ -0,0 +1,2 @@
+#define struct_stat struct stat
+#include "tst-lutimes.c"
diff --git a/io/tst-lutimes.c b/io/tst-lutimes.c
index b2da3c5..237a870 100644
--- a/io/tst-lutimes.c
+++ b/io/tst-lutimes.c
@@ -21,23 +21,27 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 
+#ifndef struct_stat
+# define struct_stat struct stat64
+#endif
+
 static int
 test_lutimes_helper (const char *testfile, int fd, const char *testlink,
                      const struct timeval *tv)
 {
-  struct stat64 stfile_orig;
+  struct_stat stfile_orig;
   xlstat (testfile, &stfile_orig);
 
   TEST_VERIFY_EXIT (lutimes (testlink, tv) == 0);
 
-  struct stat64 stlink;
+  struct_stat stlink;
   xlstat (testlink, &stlink);
 
   TEST_COMPARE (stlink.st_atime, tv[0].tv_sec);
   TEST_COMPARE (stlink.st_mtime, tv[1].tv_sec);
 
   /* Check if the timestamp from original file is not changed.  */
-  struct stat64 stfile;
+  struct_stat stfile;
   xlstat (testfile, &stfile);
 
   TEST_COMPARE (stfile_orig.st_atime, stfile.st_atime);
diff --git a/io/tst-stat-time64.c b/io/tst-stat-time64.c
new file mode 100644
index 0000000..8feded5
--- /dev/null
+++ b/io/tst-stat-time64.c
@@ -0,0 +1,102 @@
+/* Basic test of stat with 64-bit time_t interfaces.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <support/temp_file.h>
+#include <support/xunistd.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+
+/* The idea of the test is check whether the 64-bit time_t stat implementation
+   returns the expected value for comparable fields, so it does not really
+   matter whether statx uses a fallback implementation or not.  */
+
+static void
+stat_check (int fd, const char *path, struct stat *st)
+{
+  TEST_COMPARE (stat (path, st), 0);
+}
+
+static void
+lstat_check (int fd, const char *path, struct stat *st)
+{
+  TEST_COMPARE (lstat (path, st), 0);
+}
+
+static void
+fstat_check (int fd, const char *path, struct stat *st)
+{
+  TEST_COMPARE (fstat (fd, st), 0);
+}
+
+static void
+fstatat_check (int fd, const char *path, struct stat *st)
+{
+  TEST_COMPARE (fstatat (fd, path, st, 0), 0);
+}
+
+typedef void (*test_t)(int, const char *path, struct stat *);
+
+static int
+do_test (void)
+{
+  char *path;
+  int fd = create_temp_file ("tst-statx-", &path);
+  TEST_VERIFY_EXIT (fd >= 0);
+  support_write_file_string (path, "abc");
+
+  struct statx stx;
+  TEST_COMPARE (statx (fd, path, 0, STATX_BASIC_STATS, &stx), 0);
+
+  for (test_t *test = (test_t[]) { stat_check, lstat_check, fstat_check,
+				   fstatat_check, NULL };
+       *test != NULL; test++)
+  {
+    struct stat st;
+    (*test) (fd, path, &st);
+
+    TEST_COMPARE (stx.stx_dev_major, major (st.st_dev));
+    TEST_COMPARE (stx.stx_dev_minor, minor (st.st_dev));
+    TEST_COMPARE (stx.stx_ino, st.st_ino);
+    TEST_COMPARE (stx.stx_mode, st.st_mode);
+    TEST_COMPARE (stx.stx_nlink, st.st_nlink);
+    TEST_COMPARE (stx.stx_uid, st.st_uid);
+    TEST_COMPARE (stx.stx_gid, st.st_gid);
+    TEST_COMPARE (stx.stx_rdev_major, major (st.st_rdev));
+    TEST_COMPARE (stx.stx_rdev_minor, minor (st.st_rdev));
+    TEST_COMPARE (stx.stx_blksize, st.st_blksize);
+    TEST_COMPARE (stx.stx_blocks, st.st_blocks);
+
+    TEST_COMPARE (stx.stx_ctime.tv_sec, st.st_ctim.tv_sec);
+    TEST_COMPARE (stx.stx_ctime.tv_nsec, st.st_ctim.tv_nsec);
+    TEST_COMPARE (stx.stx_mtime.tv_sec, st.st_mtim.tv_sec);
+    TEST_COMPARE (stx.stx_mtime.tv_nsec, st.st_mtim.tv_nsec);
+  }
+
+  xclose (fd);
+  free (path);
+
+  return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/io/tst-utime-time64.c b/io/tst-utime-time64.c
new file mode 100644
index 0000000..eb62f59
--- /dev/null
+++ b/io/tst-utime-time64.c
@@ -0,0 +1,2 @@
+#define struct_stat struct stat
+#include "tst-utime.c"
diff --git a/io/tst-utime.c b/io/tst-utime.c
index 6269ef7..0144e2a 100644
--- a/io/tst-utime.c
+++ b/io/tst-utime.c
@@ -21,13 +21,17 @@
 #include <support/xunistd.h>
 #include <sys/stat.h>
 
+#ifndef struct_stat
+# define struct_stat struct stat64
+#endif
+
 static int
 test_utime_helper (const char *file, int fd, const struct utimbuf *ut)
 {
   int result = utime (file, ut);
   TEST_VERIFY_EXIT (result == 0);
 
-  struct stat64 st;
+  struct_stat st;
   xfstat (fd, &st);
 
   /* Check if seconds for actime match */
diff --git a/io/tst-utimensat-time64.c b/io/tst-utimensat-time64.c
new file mode 100644
index 0000000..7ac7d8d
--- /dev/null
+++ b/io/tst-utimensat-time64.c
@@ -0,0 +1,2 @@
+#define struct_stat struct stat
+#include "tst-utimensat.c"
diff --git a/io/tst-utimensat.c b/io/tst-utimensat.c
index 0c7c847..062abdd 100644
--- a/io/tst-utimensat.c
+++ b/io/tst-utimensat.c
@@ -22,6 +22,10 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 
+#ifndef struct_stat
+# define struct_stat struct stat64
+#endif
+
 static int
 test_utimesat_helper (const char *testfile, int fd, const char *testlink,
                       const struct timespec *ts)
@@ -29,7 +33,7 @@ test_utimesat_helper (const char *testfile, int fd, const char *testlink,
   {
     TEST_VERIFY_EXIT (utimensat (fd, testfile, ts, 0) == 0);
 
-    struct stat64 st;
+    struct_stat st;
     xfstat (fd, &st);
 
     /* Check if seconds for atime match */
@@ -40,20 +44,20 @@ test_utimesat_helper (const char *testfile, int fd, const char *testlink,
   }
 
   {
-    struct stat64 stfile_orig;
+    struct_stat stfile_orig;
     xlstat (testfile, &stfile_orig);
 
     TEST_VERIFY_EXIT (utimensat (0 /* ignored  */, testlink, ts,
 				 AT_SYMLINK_NOFOLLOW)
 		       == 0);
-    struct stat64 stlink;
+    struct_stat stlink;
     xlstat (testlink, &stlink);
 
     TEST_COMPARE (stlink.st_atime, ts[0].tv_sec);
     TEST_COMPARE (stlink.st_mtime, ts[1].tv_sec);
 
     /* Check if the timestamp from original file is not changed.  */
-    struct stat64 stfile;
+    struct_stat stfile;
     xlstat (testfile, &stfile);
 
     TEST_COMPARE (stfile_orig.st_atime, stfile.st_atime);
diff --git a/io/tst-utimes-time64.c b/io/tst-utimes-time64.c
new file mode 100644
index 0000000..234ec02
--- /dev/null
+++ b/io/tst-utimes-time64.c
@@ -0,0 +1,2 @@
+#define struct_stat struct stat
+#include "tst-utimes.c"
diff --git a/io/tst-utimes.c b/io/tst-utimes.c
index 991ab0c..e88efff 100644
--- a/io/tst-utimes.c
+++ b/io/tst-utimes.c
@@ -22,13 +22,17 @@
 #include <sys/time.h>
 #include <time.h>
 
+#ifndef struct_stat
+# define struct_stat struct stat64
+#endif
+
 static int
 test_utimes_helper (const char *file, int fd, const struct timeval *tv)
 {
   int result = utimes (file, tv);
   TEST_VERIFY_EXIT (result == 0);
 
-  struct stat64 st;
+  struct_stat st;
   xfstat (fd, &st);
 
   /* Check if seconds for atime match */