| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // Make it possible to customize the Bionic loader. |
| // |
| |
| #ifndef COMMON_DLFCN_INJECTION_H_ |
| #define COMMON_DLFCN_INJECTION_H_ |
| |
| namespace arc { |
| |
| // Initializes this module. ResolveSymbol will not work until this |
| // function is called. On NaCl and Bare Metal, this function also |
| // injects some functions to the Bionic loader. |
| // |
| // This function is not thread safe, and you must call this function |
| // before the first pthread_create call. |
| // |
| // We must finish set up IRT hooks before calling this function. So, |
| // this function must be called only from posix_translation::Initialize(). |
| void InitDlfcnInjection(); |
| |
| // Resolves wrapped symbols, which cannot be handled properly by |
| // normal dlsym, such as __wrap_*. For example, this function returns |
| // __wrap_getpid for "getpid". Returns NULL if there is no such |
| // special mapping for |symbol|. |
| // This function is thread safe as long as you do not call |
| // InitDlfcnInjection() after the first pthread_create. |
| void* ResolveWrappedSymbol(const char* symbol); |
| |
| // ARC statically links some libraries into the main binary, but on |
| // real Android, some of them are available as shared libraries. This |
| // function returns 1 for such library names. For example, this |
| // returns 1 for "libpng.so" and returns 0 for "libposix_translation.so". |
| // We use 0 or 1 instead of false or true because this function may be used |
| // in C source code. |
| // This function is thread safe as long as you do not call |
| // InitDlfcnInjection() after the first pthread_create. |
| int IsStaticallyLinkedSharedObject(const char* filename); |
| |
| } // namespace arc |
| |
| #endif // COMMON_DLFCN_INJECTION_H_ |
