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1 | /* |
2 | * Copyright (c) 2012 Apple 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 | ||
32 | int main() | |
33 | { | |
34 | Dl_info info; | |
35 | ||
36 | // load bar | |
37 | void* handleBar = dlopen("libbar.dylib", RTLD_LAZY); | |
38 | if ( handleBar == NULL ) { | |
39 | FAIL("dlclose-dylib-ref-count: dlopen(\"libbar.dylib\", RTLD_LAZY) failed with dlerror()=%s", dlerror()); | |
40 | exit(0); | |
41 | } | |
42 | ||
43 | // load foo | |
44 | void* handleFoo = dlopen("libfoo.dylib", RTLD_LAZY); | |
45 | if ( handleFoo == NULL ) { | |
46 | FAIL("dlclose-dylib-ref-count: dlopen(\"libfoo.dylib\", RTLD_LAZY) failed with dlerror()=%s", dlerror()); | |
47 | exit(0); | |
48 | } | |
49 | ||
50 | void* sym_base = dlsym(handleBar, "base"); | |
51 | if ( sym_base == NULL ) { | |
52 | FAIL("dlclose-dylib-ref-count: dlsym(handleBar, \"base\") failed"); | |
53 | exit(0); | |
54 | } | |
55 | ||
56 | void* sym_foo = dlsym(handleFoo, "foo"); | |
57 | if ( sym_foo == NULL ) { | |
58 | FAIL("dlclose-dylib-ref-count: dlsym(handleBar, \"base\") failed"); | |
59 | exit(0); | |
60 | } | |
61 | ||
62 | void* sym_bar = dlsym(handleBar, "bar"); | |
63 | if ( sym_bar == NULL ) { | |
64 | FAIL("dlclose-dylib-ref-count: dlsym(handleBar, \"base\") failed"); | |
65 | exit(0); | |
66 | } | |
67 | ||
68 | if ( dlclose(handleBar) != 0 ) { | |
69 | FAIL("dlclose-dylib-ref-count: dlclose(handleBar) != 0, dlerrr()=%s", dlerror()); | |
70 | exit(0); | |
71 | } | |
72 | ||
73 | // sym_base should still be accessible via dladdr() because of external reference from libfoo.dylib | |
74 | if ( dladdr(sym_base, &info) == 0 ) { | |
75 | FAIL("dlclose-dylib-ref-count: dladdr(sym_base) == 0, but should have succeeded"); | |
76 | exit(0); | |
77 | } | |
78 | ||
79 | // sym_foo should still be accessible via dladdr() because libfoo was dlopen'ed | |
80 | if ( dladdr(sym_foo, &info) == 0 ) { | |
81 | FAIL("dlclose-dylib-ref-count: dladdr(sym_foo) == 0, but should have succeeded"); | |
82 | exit(0); | |
83 | } | |
84 | ||
85 | // sym_bar should not be accessible via dladdr() because libbar was dlclose'ed | |
86 | if ( dladdr(sym_bar, &info) != 0 ) { | |
87 | FAIL("dlclose-dylib-ref-count: dladdr(sym_bar) != 0, but should have failed"); | |
88 | exit(0); | |
89 | } | |
90 | ||
91 | if ( dlclose(handleFoo) != 0 ) { | |
92 | FAIL("dlclose-dylib-ref-count: dlclose(handleBar) != 0, dlerrr()=%s", dlerror()); | |
93 | exit(0); | |
94 | } | |
95 | ||
96 | // sym_base should no longer be accessible via dladdr() because libfoo and libbar both closed | |
97 | if ( dladdr(sym_base, &info) != 0 ) { | |
98 | FAIL("dlclose-dylib-ref-count: dladdr(base) != 0, but should have failed"); | |
99 | exit(0); | |
100 | } | |
101 | ||
102 | // sym_foo should still be accessible via dladdr() because libfoo was dlclose'ed | |
103 | if ( dladdr(sym_foo, &info) != 0 ) { | |
104 | FAIL("dlclose-dylib-ref-count: dladdr(sym_foo) != 0, but should have failed"); | |
105 | exit(0); | |
106 | } | |
107 | ||
108 | PASS("dlclose-dylib-ref-count"); | |
109 | return EXIT_SUCCESS; | |
110 | } |