include/dlfcn.h

   1 /*
   2  * Stub dlfcn implementation for systems that lack shared library support
   3  * but obviously can still reference compiled-in symbols.
   4  */
   5
   6 #ifndef NO_SHARED_LIBS
   7 #include_next <dlfcn.h>
   8 #else
   9
  10 #define RTLD_LAZY 0
  11 #define RTLD_GLOBAL 1
  12 #define _FAKE_DLFCN_HDL (void *)0xbeefcafe
  13
  14 static inline void *dlopen(const char *file, int flag)
  15 {
  16         if (file == NULL)
  17                 return _FAKE_DLFCN_HDL;
  18         else
  19                 return NULL;
  20 }
  21
  22 extern void *_dlsym(const char *sym);
  23 static inline void *dlsym(void *handle, const char *sym)
  24 {
  25         if (handle != _FAKE_DLFCN_HDL)
  26                 return NULL;
  27         return _dlsym(sym);
  28 }
  29
  30 static inline char *dlerror(void)
  31 {
  32         return NULL;
  33 }
  34
  35 static inline int dlclose(void *handle)
  36 {
  37         return (handle == _FAKE_DLFCN_HDL) ? 0 : 1;
  38 }
  39
  40 #endif