unit-tests/test-cases/dlopen-notify-bind/main.c

   1 /*
   2  * Copyright (c) 2005-2009 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 #include <mach-o/dyld.h>
  27 #include <Availability.h>
  28
  29 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  30
  31
  32 typedef void* (*fooProc)();
  33
  34
  35 static void notify(const struct mach_header *mh, intptr_t vmaddr_slide)
  36 {
  37 // NSLookupSymbolInImage is only available on Mac OS X - not iPhone OS
  38 #if __MAC_OS_X_VERSION_MIN_REQUIRED
  39         //fprintf(stderr, "mh=%p\n", mh);
  40         NSLookupSymbolInImage(mh, "_bar", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_FULLY | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
  41 #endif
  42 }
  43
  44
  45 int main()
  46 {
  47         _dyld_register_func_for_add_image(&notify);
  48
  49         void* handle = dlopen("libfoo.dylib", RTLD_LAZY);
  50         if ( handle == NULL ) {
  51                 FAIL("dlopen(\"%s\") failed with: %s", "libfoo.dylib", dlerror());
  52                 exit(0);
  53         }
  54
  55         fooProc fooPtr = (fooProc)dlsym(handle, "foo");
  56         if ( fooPtr == NULL ) {
  57                 FAIL("dlsym(handle, \"foo\") failed");
  58                 exit(0);
  59         }
  60
  61         void* foosMalloc = (*fooPtr)();
  62         //fprintf(stderr, "foo says &malloc=%p\n", foosMalloc);
  63         //fprintf(stderr, "&malloc=%p\n", &malloc);
  64
  65         dlclose(handle);
  66
  67         if ( foosMalloc == &malloc )
  68                 PASS("dlopen-notify-bind");
  69         else
  70                 FAIL("dlopen-notify-bind libfoo.dylib double bound");
  71         return EXIT_SUCCESS;
  72 }