1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 #include <pthread.h> 32 #include <stdatomic.h> 33 34 #include <private/bionic_globals.h> 35 #include <private/bionic_malloc_dispatch.h> 36 37 // Function prototypes. 38 bool InitSharedLibrary(void* impl_handle, const char* shared_lib, const char* prefix, 39 MallocDispatch* dispatch_table); 40 41 void* LoadSharedLibrary(const char* shared_lib, const char* prefix, MallocDispatch* dispatch_table); 42 43 bool FinishInstallHooks(libc_globals* globals, const char* options, const char* prefix); 44 45 // Lock for globals, to guarantee that only one thread is doing a mutate. 46 extern pthread_mutex_t gGlobalsMutateLock; 47 extern _Atomic bool gGlobalsMutating; 48 49 // Function hooks instantiations, used by dispatch-table allocators to install themselves. 50 void SetGlobalFunctions(void* functions[]); 51