1/*
2 * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23#include <stdio.h>  // fprintf(), NULL
24#include <stdlib.h> // exit(), EXIT_SUCCESS
25#include <dlfcn.h>
26
27#include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
28
29
30///
31/// When dlopen(NULL, RTLD_FIRST) is called,
32/// any dlsym() looks against that handle should only look in
33/// the main executable, and not subsequent images.
34///
35
36
37struct info
38{
39	const char* path;
40	void*		handle;
41};
42typedef struct info info;
43
44static info dlopen_or_fail(const char* path, int options)
45{
46	info result;
47	result.path = path;
48	result.handle = dlopen(path, options);
49	if ( result.handle == NULL ) {
50		FAIL("dlsym-NULL-RTLD_FIRST: dlopen(\"%s\") failed: %s", path, dlerror());
51		exit(0);
52	}
53	//fprintf(stderr, "dlopen(%s, 0x%0X) => %p\n", path, options, result.handle);
54	return result;
55}
56
57static void dlsym_should_fail(info hp, const char* symbol)
58{
59	void* sym = dlsym(hp.handle, symbol);
60	if ( sym != NULL ) {
61		FAIL("dlsym-NULL-RTLD_FIRST: dlsym(handle-%s, \"%s\") should have failed", hp.path, symbol);
62		exit(0);
63	}
64}
65
66static void dlsym_should_succeed(info hp, const char* symbol)
67{
68	void* sym = dlsym(hp.handle, symbol);
69	if ( sym == NULL ) {
70		FAIL("dlsym-NULL-RTLD_FIRST: dlsym(handle-%s, \"%s\") failed", hp.path, symbol);
71		exit(0);
72	}
73}
74
75
76int main()
77{
78	int result;
79	info mainFirst		= dlopen_or_fail(NULL, RTLD_FIRST);
80	info mainDefault	= dlopen_or_fail(NULL, 0);
81
82	dlsym_should_succeed(mainFirst, "main_foo");
83	dlsym_should_fail(mainFirst, "foo");
84
85	dlsym_should_succeed(mainDefault, "main_foo");
86	dlsym_should_succeed(mainDefault, "foo");
87
88	result = dlclose(mainFirst.handle);
89	if ( result != 0 ) {
90		FAIL("dlsym-NULL-RTLD_FIRST: dlclose(mainFirst.handle) failed: %s", dlerror());
91		exit(0);
92	}
93	result = dlclose(mainDefault.handle);
94	if ( result != 0 ) {
95		FAIL("dlsym-NULL-RTLD_FIRST: dlclose(mainDefault.handle) failed: %s", dlerror());
96		exit(0);
97	}
98
99	PASS("dlsym-NULL-RTLD_FIRST");
100	return EXIT_SUCCESS;
101}
102
103
104void main_foo() {}
105
106
107