1 files changed, 248 insertions, 0 deletions
diff --git a/src/grep/gnulib-tests/test-stat-time.c b/src/grep/gnulib-tests/test-stat-time.c
new file mode 100644
index 0000000..cd0f3c3
--- /dev/null
+++ b/src/grep/gnulib-tests/test-stat-time.c
@@ -0,0 +1,248 @@
+/* Test of <stat-time.h>.
+   Copyright (C) 2007-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by James Youngman <jay@gnu.org>, 2007.  */
+
+#include <config.h>
+
+#include "stat-time.h"
+
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <time.h>
+
+#include "macros.h"
+
+#define BASE "test-stat-time.t"
+#include "nap.h"
+
+enum { NFILES = 4 };
+
+static char filename_stamp1[50];
+static char filename_testfile[50];
+static char filename_stamp2[50];
+static char filename_stamp3[50];
+
+/* Use file names that are different at each run.
+   This is necessary for test_birthtime() to pass on native Windows:
+   On this platform, the file system apparently remembers the creation time
+   of a file even after it is removed and created anew.  See
+   "Windows NT Contains File System Tunneling Capabilities"
+   <https://support.microsoft.com/en-us/help/172190/>  */
+static void
+initialize_filenames (void)
+{
+  long t = (long) time (NULL);
+  sprintf (filename_stamp1,   "t-stt-%ld-stamp1", t);
+  sprintf (filename_testfile, "t-stt-%ld-testfile", t);
+  sprintf (filename_stamp2,   "t-stt-%ld-stamp2", t);
+  sprintf (filename_stamp3,   "t-stt-%ld-stamp3", t);
+}
+
+static int
+force_unlink (const char *filename)
+{
+  /* This chmod is necessary on mingw, where unlink() of a read-only file
+     fails with EPERM.  */
+  chmod (filename, 0600);
+  return unlink (filename);
+}
+
+static void
+cleanup (int sig)
+{
+  /* Remove temporary files.  */
+  force_unlink (filename_stamp1);
+  force_unlink (filename_testfile);
+  force_unlink (filename_stamp2);
+  force_unlink (filename_stamp3);
+
+  if (sig != 0)
+    _exit (1);
+}
+
+static int
+open_file (const char *filename, int flags)
+{
+  int fd = open (filename, flags | O_WRONLY, 0500);
+  if (fd >= 0)
+    {
+      close (fd);
+      return 1;
+    }
+  else
+    {
+      return 0;
+    }
+}
+
+static void
+create_file (const char *filename)
+{
+  ASSERT (open_file (filename, O_CREAT | O_EXCL));
+}
+
+static void
+do_stat (const char *filename, struct stat *p)
+{
+  ASSERT (stat (filename, p) == 0);
+}
+
+static void
+prepare_test (struct stat *statinfo, struct timespec *modtimes)
+{
+  int i;
+
+  create_file (filename_stamp1);
+  nap ();
+  create_file (filename_testfile);
+  nap ();
+  create_file (filename_stamp2);
+  nap ();
+  ASSERT (chmod (filename_testfile, 0400) == 0);
+  nap ();
+  create_file (filename_stamp3);
+
+  do_stat (filename_stamp1,   &statinfo[0]);
+  do_stat (filename_testfile, &statinfo[1]);
+  do_stat (filename_stamp2,   &statinfo[2]);
+  do_stat (filename_stamp3,   &statinfo[3]);
+
+  /* Now use our access functions. */
+  for (i = 0; i < NFILES; ++i)
+    {
+      modtimes[i] = get_stat_mtime (&statinfo[i]);
+    }
+}
+
+static void
+test_mtime (const struct stat *statinfo, struct timespec *modtimes)
+{
+  int i;
+
+  /* Use the struct stat fields directly. */
+  /* mtime(stamp1) < mtime(stamp2) */
+  ASSERT (statinfo[0].st_mtime < statinfo[2].st_mtime
+          || (statinfo[0].st_mtime == statinfo[2].st_mtime
+              && (get_stat_mtime_ns (&statinfo[0])
+                  < get_stat_mtime_ns (&statinfo[2]))));
+  /* mtime(stamp2) < mtime(stamp3) */
+  ASSERT (statinfo[2].st_mtime < statinfo[3].st_mtime
+          || (statinfo[2].st_mtime == statinfo[3].st_mtime
+              && (get_stat_mtime_ns (&statinfo[2])
+                  < get_stat_mtime_ns (&statinfo[3]))));
+
+  /* Now check the result of the access functions. */
+  /* mtime(stamp1) < mtime(stamp2) */
+  ASSERT (modtimes[0].tv_sec < modtimes[2].tv_sec
+          || (modtimes[0].tv_sec == modtimes[2].tv_sec
+              && modtimes[0].tv_nsec < modtimes[2].tv_nsec));
+  /* mtime(stamp2) < mtime(stamp3) */
+  ASSERT (modtimes[2].tv_sec < modtimes[3].tv_sec
+          || (modtimes[2].tv_sec == modtimes[3].tv_sec
+              && modtimes[2].tv_nsec < modtimes[3].tv_nsec));
+
+  /* verify equivalence */
+  for (i = 0; i < NFILES; ++i)
+    {
+      struct timespec ts;
+      ts = get_stat_mtime (&statinfo[i]);
+      ASSERT (ts.tv_sec == statinfo[i].st_mtime);
+    }
+}
+
+#if defined _WIN32 && !defined __CYGWIN__
+/* Skip the ctime tests on native Windows platforms, because their
+   st_ctime is either the same as st_mtime (plus or minus an offset)
+   or set to the file _creation_ time, and is not influenced by rename
+   or chmod.  */
+# define test_ctime(ignored) ((void) 0)
+#else
+static void
+test_ctime (const struct stat *statinfo)
+{
+  /* On some buggy NFS clients, mtime and ctime are disproportionately
+     skewed from one another.  Skip this test in that case.  */
+  if (statinfo[0].st_mtime != statinfo[0].st_ctime)
+    return;
+
+  /* mtime(stamp2) < ctime(testfile) */
+  ASSERT (statinfo[2].st_mtime < statinfo[1].st_ctime
+          || (statinfo[2].st_mtime == statinfo[1].st_ctime
+              && (get_stat_mtime_ns (&statinfo[2])
+                  < get_stat_ctime_ns (&statinfo[1]))));
+}
+#endif
+
+static void
+test_birthtime (const struct stat *statinfo,
+                const struct timespec *modtimes,
+                struct timespec *birthtimes)
+{
+  int i;
+
+  /* Collect the birth times.  */
+  for (i = 0; i < NFILES; ++i)
+    {
+      birthtimes[i] = get_stat_birthtime (&statinfo[i]);
+      if (birthtimes[i].tv_nsec < 0)
+        return;
+    }
+
+  /* mtime(stamp1) < birthtime(testfile) */
+  ASSERT (modtimes[0].tv_sec < birthtimes[1].tv_sec
+          || (modtimes[0].tv_sec == birthtimes[1].tv_sec
+              && modtimes[0].tv_nsec < birthtimes[1].tv_nsec));
+  /* birthtime(testfile) < mtime(stamp2) */
+  ASSERT (birthtimes[1].tv_sec < modtimes[2].tv_sec
+          || (birthtimes[1].tv_sec == modtimes[2].tv_sec
+              && birthtimes[1].tv_nsec < modtimes[2].tv_nsec));
+}
+
+int
+main (void)
+{
+  struct stat statinfo[NFILES];
+  struct timespec modtimes[NFILES];
+  struct timespec birthtimes[NFILES];
+
+  initialize_filenames ();
+
+#ifdef SIGHUP
+  signal (SIGHUP, cleanup);
+#endif
+#ifdef SIGINT
+  signal (SIGINT, cleanup);
+#endif
+#ifdef SIGQUIT
+  signal (SIGQUIT, cleanup);
+#endif
+#ifdef SIGTERM
+  signal (SIGTERM, cleanup);
+#endif
+
+  cleanup (0);
+  prepare_test (statinfo, modtimes);
+  test_mtime (statinfo, modtimes);
+  test_ctime (statinfo);
+  test_birthtime (statinfo, modtimes, birthtimes);
+
+  cleanup (0);
+  return 0;
+}