dyld-43.tar.gz
[apple/dyld.git] / unit-tests / test-cases / dlsym-RTLD_NEXT / main.c
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 /// This process has five foo functions. They are in:
32 /// main, test.bundle, test.dylib, foo1.dylib, foo2.dylib
33 ///
34 /// Both test.bundle and test.dylib call dlsym(RTLD_NEXT, "foo");
35 /// They should find the ones in foo1.dylib and foo2.dylib respectively.
36 /// We test this be looking up those symbols explictly.
37 ///
38
39
40 int foo()
41 {
42 return 0;
43 }
44
45 typedef void* (*TestProc)(void);
46
47 static void trySO(const char* pathToLoad, const char* indirectLibrary)
48 {
49 void* indirectHandle = dlopen(indirectLibrary, RTLD_LAZY);
50 if ( indirectHandle == NULL ) {
51 FAIL("dlopen(\"%s\") failed", indirectLibrary);
52 exit(0);
53 }
54
55 void* indirectFoo = (TestProc)dlsym(indirectHandle, "foo");
56 if ( indirectFoo == NULL ) {
57 FAIL("dlsym(handle, \"test\") failed");
58 exit(0);
59 }
60
61 void* handle = dlopen(pathToLoad, RTLD_LAZY);
62 if ( handle == NULL ) {
63 FAIL("dlopen(\"%s\") failed", pathToLoad);
64 exit(0);
65 }
66
67 TestProc sym = (TestProc)dlsym(handle, "test");
68 if ( sym == NULL ) {
69 FAIL("dlsym(handle, \"test\") failed");
70 exit(0);
71 }
72
73 void* targetFoo = (*sym)();
74
75 //printf("targetFoo = %p, indirectFoo = %p\n", targetFoo, indirectFoo);
76
77 if ( targetFoo != indirectFoo ) {
78 FAIL("dlsym-RTLD_NEXT wrong foo found");
79 exit(0);
80 }
81
82 }
83
84
85
86 int main()
87 {
88 trySO("test.bundle", "foo1.dylib");
89 trySO("test.dylib", "foo2.dylib");
90
91 PASS("dlsym-RTLD_NEXT bundle and dylib");
92 return EXIT_SUCCESS;
93 }