1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // A crazy linker test to: 6 // - Load a library (libzoo.so) with the linker. 7 // - Find the address of the "Zoo" function in libzoo.so. 8 // - Call the Zoo() function, which will use dlopen() / dlsym() to 9 // find libbar.so (which depends on libfoo.so). 10 // - Close the library. 11 12 // This tests the dlopen/dlsym/dlclose wrappers provided by the crazy 13 // linker to loaded libraries. 14 15 #include <stdio.h> 16 #include <crazy_linker.h> 17 18 #include "test_util.h" 19 20 typedef bool (*FunctionPtr)(); 21 main()22int main() { 23 crazy_context_t* context = crazy_context_create(); 24 crazy_library_t* library; 25 26 // Load libzoo.so 27 if (!crazy_library_open(&library, "libzoo.so", context)) { 28 Panic("Could not open library: %s\n", crazy_context_get_error(context)); 29 } 30 31 // Find the "Zoo" symbol. 32 FunctionPtr zoo_func; 33 if (!crazy_library_find_symbol( 34 library, "Zoo", reinterpret_cast<void**>(&zoo_func))) { 35 Panic("Could not find 'Zoo' in libzoo.so\n"); 36 } 37 38 // Call it. 39 bool ret = (*zoo_func)(); 40 if (!ret) 41 Panic("'Zoo' function failed!"); 42 43 // Close the library. 44 printf("Closing libzoo.so\n"); 45 crazy_library_close(library); 46 47 crazy_context_destroy(context); 48 49 return 0; 50 }