testing/test-cases/dlopen-realpath.dtest/main.c

   1
   2 // BUILD:  $CC main.c -o $BUILD_DIR/dlopen-realpath.exe
   3 // BUILD:  cd $BUILD_DIR && ln -s ./IOKit.framework/IOKit IOKit && ln -s /System/Library/Frameworks/IOKit.framework IOKit.framework
   4
   5 // RUN:  DYLD_FALLBACK_LIBRARY_PATH=/baz  ./dlopen-realpath.exe
   6
   7 #include <stdio.h>
   8 #include <dlfcn.h>
   9
  10
  11 static void tryImage(const char* path)
  12 {
  13     printf("[BEGIN] dlopen-realpath %s\n", path);
  14         void* handle = dlopen(path, RTLD_LAZY);
  15         if ( handle == NULL ) {
  16         printf("dlerror(): %s\n", dlerror());
  17         printf("[FAIL] dlopen-realpath %s\n", path);
  18                 return;
  19         }
  20
  21         int result = dlclose(handle);
  22         if ( result != 0 ) {
  23         printf("dlclose(%p): %s\n", handle, dlerror());
  24         printf("[FAIL] dlopen-realpath %s\n", path);
  25                 return;
  26         }
  27
  28     printf("[PASS] dlopen-realpath %s\n", path);
  29 }
  30
  31
  32
  33 int main()
  34 {
  35         tryImage("./IOKit.framework/IOKit");
  36         tryImage("./././IOKit/../IOKit.framework/IOKit");
  37     tryImage("./IOKit");
  38
  39     // Also try libSystem which has an alias in the OS to /usr/lib/libSystem.B.dylib
  40     tryImage("/usr/lib/libSystem.dylib");
  41
  42     // Also try using non-canonical path
  43     // This requires DYLD_FALLBACK_LIBRARY_PATH to be disabled, otherwise it is found that way
  44     tryImage("//usr/lib/libSystem.dylib");
  45     tryImage("/usr/./lib/libSystem.dylib");
  46
  47         return 0;
  48 }
  49