unit-tests/test-cases/dlopen-notify-bind/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 #include <mach-o/dyld.h>
  27
  28 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  29
  30
  31 typedef void* (*fooProc)();
  32
  33
  34 static void notify(const struct mach_header *mh, intptr_t vmaddr_slide)
  35 {
  36         //fprintf(stderr, "mh=%p\n", mh);
  37         NSLookupSymbolInImage(mh, "_bar", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_FULLY | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
  38 }
  39
  40
  41 int main()
  42 {
  43         _dyld_register_func_for_add_image(&notify);
  44
  45         void* handle = dlopen("libfoo.dylib", RTLD_LAZY);
  46         if ( handle == NULL ) {
  47                 FAIL("dlopen(\"%s\") failed with: %s", "libfoo.dylib", dlerror());
  48                 exit(0);
  49         }
  50
  51         fooProc fooPtr = (fooProc)dlsym(handle, "foo");
  52         if ( fooPtr == NULL ) {
  53                 FAIL("dlsym(handle, \"foo\") failed");
  54                 exit(0);
  55         }
  56
  57         void* foosMalloc = (*fooPtr)();
  58         //fprintf(stderr, "foo says &malloc=%p\n", foosMalloc);
  59         //fprintf(stderr, "&malloc=%p\n", &malloc);
  60
  61         dlclose(handle);
  62
  63         if ( foosMalloc == &malloc )
  64                 PASS("dlopen-notify-bind");
  65         else
  66                 FAIL("dlopen-notify-bind libfoo.dylib double bound");
  67         return EXIT_SUCCESS;
  68 }