1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #define _BSD_SOURCE 20 #include <sys/cdefs.h> 21 22 #include <unistd.h> // For environ. 23 24 #include <stddef.h> // For size_t. 25 26 #include <sys/random.h> // For getentropy. 27 28 #define __BEGIN_HIDDEN_DECLS _Pragma("GCC visibility push(hidden)") 29 #define __END_HIDDEN_DECLS _Pragma("GCC visibility pop") 30 31 extern const char* __progname; 32 33 /* Ignore all DEF_STRONG/DEF_WEAK in OpenBSD. */ 34 #define DEF_STRONG(sym) 35 #define DEF_WEAK(sym) 36 #define __weak_alias __strong_alias 37 38 /* Ignore all __warn_references in OpenBSD. */ 39 #define __warn_references(sym,msg) 40 41 #define PROTO_NORMAL(x) 42 43 #if !defined(ANDROID_HOST_MUSL) 44 #define explicit_bzero(p, s) memset_explicit(p, 0, s) 45 #endif 46 47 #if defined(ANDROID_HOST_MUSL) 48 #define __LIBC_HIDDEN__ __attribute__((visibility("hidden"))) 49 #endif 50 51 /* OpenBSD has this in paths.h. But this directory doesn't normally exist. 52 * Even when it does exist, only the 'shell' user has permissions. 53 */ 54 #define _PATH_TMP "/data/local/tmp/" 55 56 /* Use appropriate shell depending on process's executable. */ 57 __LIBC_HIDDEN__ extern const char* __bionic_get_shell_path(); 58 #define _PATH_BSHELL __bionic_get_shell_path() 59 60 __LIBC_HIDDEN__ extern char* __findenv(const char*, int, int*); 61 __LIBC_HIDDEN__ extern char* _mktemp(char*); 62 63 // Only OpenBSD has this at the moment, and we're more likely to just say 64 // "malloc is always calloc", so we don't expose this as libc API. 65 __LIBC_HIDDEN__ void* recallocarray(void*, size_t, size_t, size_t); 66