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/* Test of file timestamp modification functions.
Copyright (C) 2009-2020 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/>. */
#include "test-utimens-common.h"
/* This file is designed to test both utimens(a,b) and
utimensat(AT_FDCWD,a,b,0). FUNC is the function to test. Assumes
that BASE and ASSERT are already defined. If PRINT, warn before
skipping tests with status 77. */
static int
test_utimens (int (*func) (char const *, struct timespec const *), bool print)
{
struct stat st1;
struct stat st2;
ASSERT (close (creat (BASE "file", 0600)) == 0);
/* If utimens truncates to worse resolution than the file system
supports, then time can appear to go backwards between now and a
follow-up utimens with UTIME_NOW or a NULL timespec. Use
UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the
source. */
ASSERT (stat (BASE "file", &st1) == 0);
nap ();
ASSERT (func (BASE "file", NULL) == 0);
ASSERT (stat (BASE "file", &st2) == 0);
ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
if (check_ctime)
ASSERT (ctime_compare (&st1, &st2) < 0);
{
/* On some NFS systems, the 'now' timestamp of creat or a NULL
timespec is determined by the server, but the 'now' timestamp
determined by gettime() (as is done when using UTIME_NOW) is
determined by the client; since the two machines are not
necessarily on the same clock, this is another case where time
can appear to go backwards. The rest of this test cares about
client time, so manually use gettime() to set both times. */
struct timespec ts[2];
gettime (&ts[0]);
ts[1] = ts[0];
ASSERT (func (BASE "file", ts) == 0);
ASSERT (stat (BASE "file", &st1) == 0);
nap ();
}
/* Invalid arguments. */
errno = 0;
ASSERT (func ("no_such", NULL) == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (func ("no_such/", NULL) == -1);
ASSERT (errno == ENOENT || errno == ENOTDIR);
errno = 0;
ASSERT (func ("", NULL) == -1);
ASSERT (errno == ENOENT);
{
struct timespec ts[2];
ts[0].tv_sec = Y2K;
ts[0].tv_nsec = UTIME_BOGUS_POS;
ts[1].tv_sec = Y2K;
ts[1].tv_nsec = 0;
errno = 0;
ASSERT (func (BASE "file", ts) == -1);
ASSERT (errno == EINVAL);
}
{
struct timespec ts[2];
ts[0].tv_sec = Y2K;
ts[0].tv_nsec = 0;
ts[1].tv_sec = Y2K;
ts[1].tv_nsec = UTIME_BOGUS_NEG;
errno = 0;
ASSERT (func (BASE "file", ts) == -1);
ASSERT (errno == EINVAL);
}
{
struct timespec ts[2];
ts[0].tv_sec = Y2K;
ts[0].tv_nsec = 0;
ts[1] = ts[0];
errno = 0;
ASSERT (func (BASE "file/", ts) == -1);
ASSERT (errno == ENOTDIR || errno == EINVAL);
}
ASSERT (stat (BASE "file", &st2) == 0);
ASSERT (st1.st_atime == st2.st_atime);
ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
/* Set both times. */
{
struct timespec ts[2];
ts[0].tv_sec = Y2K;
ts[0].tv_nsec = BILLION / 2 - 1;
ts[1].tv_sec = Y2K;
ts[1].tv_nsec = BILLION - 1;
ASSERT (func (BASE "file", ts) == 0);
ASSERT (stat (BASE "file", &st2) == 0);
ASSERT (st2.st_atime == Y2K);
ASSERT (0 <= get_stat_atime_ns (&st2));
ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
ASSERT (st2.st_mtime == Y2K);
ASSERT (0 <= get_stat_mtime_ns (&st2));
ASSERT (get_stat_mtime_ns (&st2) < BILLION);
if (check_ctime)
ASSERT (ctime_compare (&st1, &st2) < 0);
}
/* Play with UTIME_OMIT, UTIME_NOW. */
{
struct stat st3;
struct timespec ts[2];
ts[0].tv_sec = BILLION;
ts[0].tv_nsec = UTIME_OMIT;
ts[1].tv_sec = 0;
ts[1].tv_nsec = UTIME_NOW;
nap ();
ASSERT (func (BASE "file", ts) == 0);
ASSERT (stat (BASE "file", &st3) == 0);
ASSERT (st3.st_atime == Y2K);
ASSERT (0 <= get_stat_atime_ns (&st3));
ASSERT (get_stat_atime_ns (&st3) < BILLION / 2);
/* See comment above about this utimecmp call. */
ASSERT (0 <= utimecmp (BASE "file", &st3, &st1, UTIMECMP_TRUNCATE_SOURCE));
if (check_ctime)
ASSERT (ctime_compare (&st2, &st3) < 0);
nap ();
ts[0].tv_nsec = 0;
ts[1].tv_nsec = UTIME_OMIT;
ASSERT (func (BASE "file", ts) == 0);
ASSERT (stat (BASE "file", &st2) == 0);
ASSERT (st2.st_atime == BILLION);
ASSERT (get_stat_atime_ns (&st2) == 0);
ASSERT (st3.st_mtime == st2.st_mtime);
ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2));
if (check_ctime)
ASSERT (ctime_compare (&st3, &st2) < 0);
}
/* Make sure this dereferences symlinks. */
if (symlink (BASE "file", BASE "link"))
{
ASSERT (unlink (BASE "file") == 0);
if (print)
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
return 77;
}
ASSERT (lstat (BASE "link", &st1) == 0);
ASSERT (st1.st_mtime != Y2K);
errno = 0;
ASSERT (func (BASE "link/", NULL) == -1);
ASSERT (errno == ENOTDIR);
{
struct timespec ts[2];
ts[0].tv_sec = Y2K;
ts[0].tv_nsec = 0;
ts[1] = ts[0];
ASSERT (func (BASE "link", ts) == 0);
ASSERT (lstat (BASE "link", &st2) == 0);
/* Can't compare atimes, since lstat() changes symlink atime on cygwin. */
ASSERT (st1.st_mtime == st2.st_mtime);
ASSERT (stat (BASE "link", &st2) == 0);
ASSERT (st2.st_mtime == Y2K);
ASSERT (get_stat_mtime_ns (&st2) == 0);
}
/* Cleanup. */
ASSERT (unlink (BASE "link") == 0);
ASSERT (unlink (BASE "file") == 0);
return 0;
}
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