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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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