unit-tests/test-cases/dyld-func-lookup/main.c

   1 /*
   2  * Copyright (c) 2006 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 <stdbool.h>
  27
  28 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  29
  30 extern bool check_dyld_func_lookup();
  31
  32 typedef bool (*proc)(void);
  33
  34 static void trySO(const char* path)
  35 {
  36         void* handle = dlopen(path, RTLD_LAZY);
  37         if ( handle == NULL ) {
  38                 FAIL("dlopen(\"%s\") failed with: %s", path, dlerror());
  39                 exit(0);
  40         }
  41
  42         proc sym = (proc)dlsym(handle, "check_dyld_func_lookup");
  43         if ( sym == NULL ) {
  44                 FAIL("dlsym(handle, \"foo\") failed");
  45                 exit(0);
  46         }
  47
  48         if ( sym == &check_dyld_func_lookup )
  49                 FAIL("found same check_dyld_func_lookup as in main executable");
  50
  51         if ( ! (*sym)() )
  52                 FAIL("check_dyld_func_lookup failed for %s", path);
  53
  54         dlclose(handle);
  55 }
  56
  57
  58
  59 int main()
  60 {
  61         if ( ! check_dyld_func_lookup() )
  62                 FAIL("check_dyld_func_lookup failed for main executable");
  63
  64         trySO("test.bundle");
  65         trySO("test.dylib");
  66
  67         PASS("dyld-func-lookup");
  68         return EXIT_SUCCESS;
  69 }