31cd08f9eb
init is now built as a dynamic executable, so the dynamic linker has to be able to run in the init process. However, since init is launched so early, even /dev/* and /proc/* file systems are not mounted and thus some APIs that rely on the paths do not work. The dynamic linker now goes alternative path when it is running in the init process. For example, /proc/self/exe is not read for the init since we always now the path of the init (/init). Also, arc4random* APIs are not used since the APIs rely on /dev/urandom. Linker now does not randomize library loading order and addresses when running in the init process. Bug: 80454183 Test: `adb reboot recovery; adb devices` shows the device ID Change-Id: I29b6d70e4df5f7f690876126d5fe81258c1d3115
58 lines
2.5 KiB
C++
58 lines
2.5 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <string>
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#include <vector>
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extern const char* const kZipFileSeparator;
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void format_string(std::string* str, const std::vector<std::pair<std::string, std::string>>& params);
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bool file_is_in_dir(const std::string& file, const std::string& dir);
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bool file_is_under_dir(const std::string& file, const std::string& dir);
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bool normalize_path(const char* path, std::string* normalized_path);
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bool parse_zip_path(const char* input_path, std::string* zip_path, std::string* entry_path);
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// For every path element this function checks of it exists, and is a directory,
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// and normalizes it:
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// 1. For regular path it converts it to realpath()
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// 2. For path in a zip file it uses realpath on the zipfile
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// normalizes entry name by calling normalize_path function.
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void resolve_paths(std::vector<std::string>& paths,
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std::vector<std::string>* resolved_paths);
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void split_path(const char* path, const char* delimiters, std::vector<std::string>* paths);
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std::string dirname(const char* path);
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off64_t page_start(off64_t offset);
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size_t page_offset(off64_t offset);
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bool safe_add(off64_t* out, off64_t a, size_t b);
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bool is_init();
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