1/*
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 2019 Andrew Gierth
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * Though this file is initially distributed under the 2-clause BSD license,
28 * the author grants permission for its redistribution under alternative
29 * licenses as set forth at <https://rhodiumtoad.github.io/RELICENSE.txt>.
30 * This paragraph and the RELICENSE.txt file are not part of the license and
31 * may be omitted in redistributions.
32 */
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD$");
36
37#include <stdio.h>
38#include <stdlib.h>
39#include <stdarg.h>
40#include <string.h>
41#include <unistd.h>
42#include <dlfcn.h>
43
44#include <atf-c.h>
45
46typedef void (modfunc_t)(int op);
47
48/*
49 * Minimal test case for PR 235158; mutual dependencies between jemalloc and
50 * libthr causing issues in thread creation.  Specifically to this case, libthr
51 * uses calloc to initialize pthread mutexes, and jemalloc uses pthread mutexes.
52 *
53 * Deferred initialization provided by jemalloc proved to be fragile, causing
54 * issues like in the referenced PR where thread creation in a shared object
55 * loaded via dlopen(3) would stall unless the calling application also linked
56 * against pthread.
57 */
58ATF_TC(maintc);
59ATF_TC_HEAD(maintc, tc)
60{
61
62	atf_tc_set_md_var(tc, "timeout", "3");
63}
64
65ATF_TC_BODY(maintc, tc)
66{
67	char *libpath;
68	modfunc_t *func;
69	void *mod_handle;
70	const char *srcdir;
71	dlfunc_t rawfunc;
72
73	srcdir = atf_tc_get_config_var(tc, "srcdir");
74	if (asprintf(&libpath, "%s/dynthr_mod.so", srcdir) < 0)
75		atf_tc_fail("failed to construct path to libthr");
76	mod_handle = dlopen(libpath, RTLD_LOCAL);
77	free(libpath);
78	if (mod_handle == NULL)
79		atf_tc_fail("failed to open dynthr_mod.so: %s", dlerror());
80	rawfunc = dlfunc(mod_handle, "mod_main");
81	if (rawfunc == NULL)
82		atf_tc_fail("failed to resolve function mod_main");
83	func = (modfunc_t *)rawfunc;
84	func(1);
85	func(0);
86}
87
88ATF_TP_ADD_TCS(tp)
89{
90
91	ATF_TP_ADD_TC(tp, maintc);
92	return (atf_no_error());
93}
94