-XBT_PUBLIC(size_t) simcall_file_read(const char* storage, void* ptr, size_t size, size_t nmemb, smx_file_t stream);
-XBT_PUBLIC(size_t) simcall_file_write(const char* storage, const void* ptr, size_t size, size_t nmemb, smx_file_t stream);
+XBT_PUBLIC(size_t) simcall_file_read(void* ptr, size_t size, size_t nmemb, smx_file_t stream);
+XBT_PUBLIC(size_t) simcall_file_write(const void* ptr, size_t size, size_t nmemb, smx_file_t stream);