unit-tests/test-cases/image-count/main.c

   1 /*
   2  * Copyright (c) 2010 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 <stdlib.h> // EXIT_SUCCESS
  24 #include <stdio.h>
  25 #include <dlfcn.h>
  26 #include <mach-o/dyld.h>
  27 #include <mach-o/dyld_images.h>
  28
  29 #include "test.h"
  30
  31 extern struct mach_header __dso_handle;
  32
  33
  34 struct dyld_all_image_infos* getImageInfosFromKernel()
  35 {
  36         task_dyld_info_data_t task_dyld_info;
  37         mach_msg_type_number_t count = TASK_DYLD_INFO_COUNT;
  38
  39     if ( task_info(mach_task_self(), TASK_DYLD_INFO, (task_info_t)&task_dyld_info, &count) ) {
  40                 FAIL("all_image_infos: task_info() failed");
  41                 exit(0);
  42         }
  43         return (struct dyld_all_image_infos*)(uintptr_t)task_dyld_info.all_image_info_addr;
  44 }
  45
  46
  47 int
  48 main()
  49 {
  50         struct dyld_all_image_infos* info = getImageInfosFromKernel();
  51         if ( info->version < 10 ) {
  52                 FAIL("image-count: dyld_all_image_infos is < 10");
  53                 exit(0);
  54         }
  55
  56         if ( info->infoArrayCount !=  info->initialImageCount ) {
  57                 FAIL("image-count: dyld_all_image_infos.infoArrayCount != dyld_all_image_infos.initialImageCount");
  58                 exit(0);
  59         }
  60
  61         void* h = dlopen("libfoo.dylib", RTLD_LAZY);
  62         if ( h == NULL ) {
  63                 FAIL("image-count: dyld_all_image_infos is < 10");
  64                 exit(0);
  65         }
  66
  67         if ( info->infoArrayCount != (info->initialImageCount+1) ) {
  68                 FAIL("image-count: infoArrayCount did not increment when libfoo.dylib was loaded");
  69                 exit(0);
  70         }
  71
  72         dlclose(h);
  73
  74         if ( info->infoArrayCount !=  info->initialImageCount ) {
  75                 FAIL("image-count: infoArrayCount did not decrement when libfoo.dylib was unloaded");
  76                 exit(0);
  77         }
  78
  79         PASS("image-count");
  80         return EXIT_SUCCESS;
  81 }
  82
  83