1/* 2 * Copyright (c) 2013 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 32int main() 33{ 34 Dl_info info; 35 36 // load foo 37 void* handleFoo = dlopen("libfoo.dylib", RTLD_LAZY); 38 if ( handleFoo == NULL ) { 39 FAIL("dlclose-dylib-dynamic-ref: dlopen(\"libfoo.dylib\", RTLD_LAZY) failed with dlerror()=%s", dlerror()); 40 exit(0); 41 } 42 43 // load bar 44 void* handleBar = dlopen("libbar.dylib", RTLD_LAZY); 45 if ( handleBar == NULL ) { 46 FAIL("dlclose-dylib-dynamic-ref: dlopen(\"libbar.dylib\", RTLD_LAZY) failed with dlerror()=%s", dlerror()); 47 exit(0); 48 } 49 50 // load baz 51 void* handleBaz = dlopen("libbaz.dylib", RTLD_LAZY); 52 if ( handleBaz == NULL ) { 53 FAIL("dlclose-dylib-dynamic-ref: dlopen(\"libbaz.dylib\", RTLD_LAZY) failed with dlerror()=%s", dlerror()); 54 exit(0); 55 } 56 57 58 void* sym_foo = dlsym(handleFoo, "foo"); 59 if ( sym_foo == NULL ) { 60 FAIL("dlclose-dylib-dynamic-ref: dlsym(handleFoo, \"foo\") failed"); 61 exit(0); 62 } 63 64 void* sym_bar = dlsym(handleBar, "bar"); 65 if ( sym_bar == NULL ) { 66 FAIL("dlclose-dylib-dynamic-ref: dlsym(handleBar, \"bar\") failed"); 67 exit(0); 68 } 69 70 void* sym_baz = dlsym(handleBaz, "baz"); 71 if ( sym_baz == NULL ) { 72 FAIL("dlclose-dylib-dynamic-ref: dlsym(handleBaz, \"baz\") failed"); 73 exit(0); 74 } 75 76 // since foo loaded first, bar and baz should have a dynamic reference to foo because all 77 // the weak mydata symbols were coaleseced to the one in foo. 78 79 80 if ( dlclose(handleFoo) != 0 ) { 81 FAIL("dlclose-dylib-dynamic-ref: dlclose(handleBar) != 0, dlerrr()=%s", dlerror()); 82 exit(0); 83 } 84 85 // sym_foo should still be accessible via dladdr() because libbar and libbaz 86 // have dynamic references to libfoo. 87 if ( dladdr(sym_foo, &info) == 0 ) { 88 FAIL("dlclose-dylib-dynamic-ref: dladdr(sym_base) == 0, but should have succeeded"); 89 exit(0); 90 } 91 92 93 if ( dlclose(handleBar) != 0 ) { 94 FAIL("dlclose-dylib-dynamic-ref: dlclose(handleBar) != 0, dlerrr()=%s", dlerror()); 95 exit(0); 96 } 97 98 99 // sym_bar should not be accessible via dladdr() because libbar was dlclose'ed 100 if ( dladdr(sym_bar, &info) != 0 ) { 101 FAIL("dlclose-dylib-dynamic-ref: dladdr(sym_bar) != 0, but should have failed"); 102 exit(0); 103 } 104 105 // sym_foo should still be accessible via dladdr() because of external libbaz 106 // has a dynamic references to libfoo. 107 if ( dladdr(sym_foo, &info) == 0 ) { 108 FAIL("dlclose-dylib-dynamic-ref: dladdr(sym_base) == 0, but should have succeeded"); 109 exit(0); 110 } 111 112 113 if ( dlclose(handleBaz) != 0 ) { 114 FAIL("dlclose-dylib-dynamic-ref: dlclose(handleBar) != 0, dlerrr()=%s", dlerror()); 115 exit(0); 116 } 117 118 // sym_baz should not be accessible via dladdr() because libbar was dlclose'ed 119 if ( dladdr(sym_baz, &info) != 0 ) { 120 FAIL("dlclose-dylib-dynamic-ref: dladdr(sym_baz) != 0, but should have failed"); 121 exit(0); 122 } 123 124 125 // sym_foo should finally be inaccessible via dladdr() because all dynamic references to libfoo are gone 126 if ( dladdr(sym_foo, &info) != 0 ) { 127 FAIL("dlclose-dylib-dynamic-ref: dladdr(sym_foo) == 0, but should have succeeded"); 128 exit(0); 129 } 130 131 132 PASS("dlclose-dylib-dynamic-ref"); 133 return EXIT_SUCCESS; 134} 135