/* * Copyright (c) 2005-2009 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include <stdio.h> // fprintf(), NULL #include <stdlib.h> // exit(), EXIT_SUCCESS #include <string.h> #include <dlfcn.h> #include <mach/mach.h> #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL() /// /// This tests that dlclose() actually unmmaps the image /// static void trySO(const char* path) { void* handle = dlopen(path, RTLD_LAZY); if ( handle == NULL ) { const char* msg = dlerror(); FAIL("dlopen(\"%s\" RTLD_LAZY) failed but it should have worked: %s", path, msg); exit(0); } void* sym = dlsym(handle, "foo"); if ( sym == NULL ) { const char* msg = dlerror(); FAIL("dlsym(handle, \"foo\") failed but it should have worked: %s", msg); exit(0); } int result = dlclose(handle); if ( result != 0 ) { FAIL("dlclose(handle) returned %d", result); exit(0); } // now try to create a page where foo() was vm_address_t addr = ((uintptr_t)sym) & (-4096); kern_return_t r = vm_allocate(mach_task_self(), &addr, 4096, VM_FLAGS_FIXED); if ( r != KERN_SUCCESS ) { FAIL("dlclose-unmap: could not allocate page where SO was previously mapped", result); exit(0); } } int main() { trySO("test.bundle"); trySO("test.dylib"); PASS("dlclose-unmap"); return 0; }