1 /* 2 * Copyright (C) 2016 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 #ifndef __LINKER_GLOBALS_H 30 #define __LINKER_GLOBALS_H 31 32 #include <link.h> 33 #include <stddef.h> 34 35 #include <unordered_map> 36 37 #include "private/libc_logging.h" 38 39 #define DL_ERR(fmt, x...) \ 40 do { \ 41 __libc_format_buffer(linker_get_error_buffer(), linker_get_error_buffer_size(), fmt, ##x); \ 42 /* If LD_DEBUG is set high enough, log every dlerror(3) message. */ \ 43 } while (false) 44 45 #define DL_WARN(fmt, x...) \ 46 do { \ 47 __libc_format_log(ANDROID_LOG_WARN, "linker", fmt, ##x); \ 48 __libc_format_fd(2, "WARNING: linker: "); \ 49 __libc_format_fd(2, fmt, ##x); \ 50 __libc_format_fd(2, "\n"); \ 51 } while (false) 52 53 #define DL_ERR_AND_LOG(fmt, x...) \ 54 do { \ 55 DL_ERR(fmt, x); \ 56 PRINT(fmt, x); \ 57 } while (false) 58 59 constexpr ElfW(Versym) kVersymNotNeeded = 0; 60 constexpr ElfW(Versym) kVersymGlobal = 1; 61 62 // These values are used to call constructors for .init_array && .preinit_array 63 extern int g_argc; 64 extern char** g_argv; 65 extern char** g_envp; 66 67 struct soinfo; 68 struct android_namespace_t; 69 70 extern android_namespace_t g_default_namespace; 71 72 extern std::unordered_map<uintptr_t, soinfo*> g_soinfo_handles_map; 73 74 // Error buffer "variable" 75 char* linker_get_error_buffer(); 76 size_t linker_get_error_buffer_size(); 77 78 #endif /* __LINKER_GLOBALS_H */ 79