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-rw-r--r--tests/test-stat-time.c248
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diff --git a/tests/test-stat-time.c b/tests/test-stat-time.c
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+/* Test of <stat-time.h>.
+ Copyright (C) 2007-2022 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;
+}
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