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/*
* Copyright (C) 2016 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma once
#include <link.h>
#include <stddef.h>
#include <string>
#include <unordered_map>
#include <async_safe/log.h>
#define DL_ERR(fmt, x...) \
do { \
async_safe_format_buffer(linker_get_error_buffer(), linker_get_error_buffer_size(), fmt, ##x); \
} while (false)
#define DL_WARN(fmt, x...) \
do { \
async_safe_format_log(ANDROID_LOG_WARN, "linker", fmt, ##x); \
async_safe_format_fd(2, "WARNING: linker: "); \
async_safe_format_fd(2, fmt, ##x); \
async_safe_format_fd(2, "\n"); \
} while (false)
void DL_WARN_documented_change(int api_level, const char* doc_link, const char* fmt, ...);
#define DL_ERR_AND_LOG(fmt, x...) \
do { \
DL_ERR(fmt, ##x); \
PRINT(fmt, ##x); \
} while (false)
#define DL_OPEN_ERR(fmt, x...) \
do { \
DL_ERR(fmt, ##x); \
LD_LOG(kLogDlopen, fmt, ##x); \
} while (false)
#define DL_SYM_ERR(fmt, x...) \
do { \
DL_ERR(fmt, ##x); \
LD_LOG(kLogDlsym, fmt, ##x); \
} while (false)
constexpr ElfW(Versym) kVersymNotNeeded = 0;
constexpr ElfW(Versym) kVersymGlobal = 1;
// These values are used to call constructors for .init_array && .preinit_array
extern int g_argc;
extern char** g_argv;
extern char** g_envp;
struct soinfo;
struct android_namespace_t;
struct platform_properties;
extern android_namespace_t g_default_namespace;
extern std::unordered_map<uintptr_t, soinfo*> g_soinfo_handles_map;
extern platform_properties g_platform_properties;
// Error buffer "variable"
char* linker_get_error_buffer();
size_t linker_get_error_buffer_size();
class DlErrorRestorer {
public:
DlErrorRestorer() {
saved_error_msg_ = linker_get_error_buffer();
}
~DlErrorRestorer() {
strlcpy(linker_get_error_buffer(), saved_error_msg_.c_str(), linker_get_error_buffer_size());
}
private:
std::string saved_error_msg_;
};
__LIBC_HIDDEN__ extern bool g_is_ldd;