unit-tests/test-cases/dlsym-RTLD_SELF/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
  27 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  28
  29
  30 ///
  31 /// This process has five foo functions.  They are in:
  32 ///             main, test.bundle, test.dylib, foo1.dylib, foo2.dylib
  33 ///
  34 /// Both test.bundle and test.dylib call dlsym(RTLD_SELF, "foo");
  35 /// They should find the ones in their own linkage unit and
  36 /// call FAIL() otherwise.
  37 /// We also check that this works in the main executable.
  38 ///
  39
  40
  41 int foo()
  42 {
  43         return 0;
  44 }
  45
  46 typedef void (*TestProc)(void);
  47
  48 static void trySO(const char* pathToLoad)
  49 {
  50         void* handle = dlopen(pathToLoad, RTLD_LAZY);
  51         if ( handle == NULL ) {
  52                 FAIL("dlopen(\"%s\") failed", pathToLoad);
  53                 exit(0);
  54         }
  55
  56         TestProc sym = (TestProc)dlsym(handle, "test");
  57         if ( sym == NULL ) {
  58                 FAIL("dlsym(handle, \"test\") failed");
  59                 exit(0);
  60         }
  61
  62         (*sym)();
  63 }
  64
  65
  66
  67 int main()
  68 {
  69         trySO("test.bundle");
  70         trySO("test.dylib");
  71
  72         if ( dlsym(RTLD_SELF, "foo") != &foo ) {
  73                 FAIL("dlsym(RTLD_SELF, \"foo\") returned wrong value");
  74         }
  75
  76         PASS("dlsym-RTLD_SELF bundle and dylib");
  77         return EXIT_SUCCESS;
  78 }