[lttng-tools.git] / tests / regression / ust / ust-dl / prog.c

/*
 * Copyright (C) 2016 Antoine Busque <abusque@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

/* _GNU_SOURCE is defined by config.h */
#include <dlfcn.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

#include <common/compat/errno.h>

/*
 * libfoo has a direct dependency on libbar.
 * libbar has a direct dependency on libzzz.
 * This test is therefore a mix of dlopen/dlclose and dlmopen/dlclose of
 * libfoo, and of its direct dependencies.
 */
int main(int argc, char **argv)
{
	void *h0, *h2, *h3, *h4;

#ifdef HAVE_DLMOPEN
	void *h1;
#endif

	char *error;
	int (*foo)(void);

	h0 = dlopen("libbar.so", RTLD_LAZY);
	if (!h0) {
		goto get_error;
	}

#ifdef HAVE_DLMOPEN
	h1 = dlmopen(LM_ID_BASE, "libfoo.so", RTLD_LAZY);
	if (!h1) {
		goto get_error;
	}
#endif

	h2 = dlopen("libzzz.so", RTLD_LAZY);
	if (!h2) {
		goto get_error;
	}
	h3 = dlopen("libfoo.so", RTLD_LAZY);
	if (!h3) {
		goto get_error;
	}
	h4 = dlopen("libfoo.so", RTLD_LAZY);
	if (!h4) {
		goto get_error;
	}

	foo = dlsym(h3, "foo");
	error = dlerror();
	if (error != NULL) {
		goto error;
	}

	foo();

	if (dlclose(h0)) {
		goto get_error;
	}

#ifdef HAVE_DLMOPEN
	if (dlclose(h1)) {
		goto get_error;
	}
#endif

	if (dlclose(h2)) {
		goto get_error;
	}
	if (dlclose(h3)) {
		goto get_error;
	}
	if (dlclose(h4)) {
		goto get_error;
	}

	exit(EXIT_SUCCESS);

get_error:
	error = dlerror();
error:
	fprintf(stderr, "%s\n", error);
	exit(EXIT_FAILURE);
}
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2016 Antoine Busque <abusque@efficios.com>
	3	*
	4	* SPDX-License-Identifier: GPL-2.0-only
	5	*
	6	*/
	7
	8	/* _GNU_SOURCE is defined by config.h */
	9	#include <dlfcn.h>
	10	#include <stdio.h>
	11	#include <unistd.h>
	12	#include <stdlib.h>
	13
	14	#include <common/compat/errno.h>
	15
	16	/*
	17	* libfoo has a direct dependency on libbar.
	18	* libbar has a direct dependency on libzzz.
	19	* This test is therefore a mix of dlopen/dlclose and dlmopen/dlclose of
	20	* libfoo, and of its direct dependencies.
	21	*/
	22	int main(int argc, char **argv)
	23	{
	24	void h0, h2, h3, h4;
	25
	26	#ifdef HAVE_DLMOPEN
	27	void *h1;
	28	#endif
	29
	30	char *error;
	31	int (*foo)(void);
	32
	33	h0 = dlopen("libbar.so", RTLD_LAZY);
	34	if (!h0) {
	35	goto get_error;
	36	}
	37
	38	#ifdef HAVE_DLMOPEN
	39	h1 = dlmopen(LM_ID_BASE, "libfoo.so", RTLD_LAZY);
	40	if (!h1) {
	41	goto get_error;
	42	}
	43	#endif
	44
	45	h2 = dlopen("libzzz.so", RTLD_LAZY);
	46	if (!h2) {
	47	goto get_error;
	48	}
	49	h3 = dlopen("libfoo.so", RTLD_LAZY);
	50	if (!h3) {
	51	goto get_error;
	52	}
	53	h4 = dlopen("libfoo.so", RTLD_LAZY);
	54	if (!h4) {
	55	goto get_error;
	56	}
	57
	58	foo = dlsym(h3, "foo");
	59	error = dlerror();
	60	if (error != NULL) {
	61	goto error;
	62	}
	63
	64	foo();
	65
	66	if (dlclose(h0)) {
	67	goto get_error;
	68	}
	69
	70	#ifdef HAVE_DLMOPEN
	71	if (dlclose(h1)) {
	72	goto get_error;
	73	}
	74	#endif
	75
	76	if (dlclose(h2)) {
	77	goto get_error;
	78	}
	79	if (dlclose(h3)) {
	80	goto get_error;
	81	}
	82	if (dlclose(h4)) {
	83	goto get_error;
	84	}
	85
	86	exit(EXIT_SUCCESS);
	87
	88	get_error:
	89	error = dlerror();
	90	error:
	91	fprintf(stderr, "%s\n", error);
	92	exit(EXIT_FAILURE);
	93	}