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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
37 struct info
38 {
39 const char* path;
40 void* handle;
41 };
42 typedef struct info info;
43
44 static 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
57 static 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
66 static 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
76 int 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
104 void main_foo() {}
105
106