1 /*-
2 * Copyright (c) 2014 Mark Johnston <markj@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: stable/12/lib/libproc/tests/target_prog.c 326064 2017-11-21 16:03:21Z markj $");
29
30 #include <err.h>
31 #include <signal.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <unistd.h>
35
36 static volatile sig_atomic_t saw;
37
38 static void
usr1(int sig __unused)39 usr1(int sig __unused)
40 {
41
42 saw = 1;
43 }
44
45 void foo(void);
46 void qux(void);
47
48 void
foo(void)49 foo(void)
50 {
51 }
52 __weak_reference(foo, _foo);
53
54 static void
bar(void)55 bar(void)
56 {
57 }
58 __strong_reference(bar, baz);
59
60 void
qux(void)61 qux(void)
62 {
63 }
64 __strong_reference(qux, $qux);
65
66 int
main(int argc,char ** argv)67 main(int argc, char **argv)
68 {
69
70 bar(); /* force the symbol to be emitted */
71
72 if (argc == 1)
73 return (EXIT_SUCCESS);
74 if (argc == 2 && strcmp(argv[1], "-s") == 0) {
75 if (signal(SIGUSR1, usr1) == SIG_ERR)
76 err(1, "signal");
77 if (kill(getpid(), SIGUSR1) != 0)
78 err(1, "kill");
79 return (saw == 1 ? EXIT_SUCCESS : EXIT_FAILURE);
80 }
81 return (EXIT_FAILURE);
82 }
83