3b236ae294
Avoid constructing vector and walking all the parents of a soinfo to check if it is accessible. The most likely scenario that the very first check returns true. Bug: http://b/35313368 Test: bionic-unit-tests --gtest_filter=dl*:Dl* Change-Id: I06c65cf61ed1c30e5e454a169de4c41038863587
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
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* Copyright (C) 2016 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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#include "linker_namespaces.h"
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#include "linker_soinfo.h"
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#include "linker_utils.h"
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bool android_namespace_t::is_accessible(const std::string& file) {
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if (!is_isolated_) {
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return true;
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}
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for (const auto& dir : ld_library_paths_) {
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if (file_is_in_dir(file, dir)) {
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return true;
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}
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}
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for (const auto& dir : default_library_paths_) {
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if (file_is_in_dir(file, dir)) {
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return true;
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}
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}
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for (const auto& dir : permitted_paths_) {
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if (file_is_under_dir(file, dir)) {
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return true;
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}
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}
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return false;
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}
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bool android_namespace_t::is_accessible(soinfo* s) {
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auto is_accessible_ftor = [this] (soinfo* si) {
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if (si->get_primary_namespace() == this) {
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return true;
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}
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const android_namespace_list_t& secondary_namespaces = si->get_secondary_namespaces();
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if (secondary_namespaces.find(this) != secondary_namespaces.end()) {
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return true;
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}
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return false;
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};
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if (is_accessible_ftor(s)) {
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return true;
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}
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return !s->get_parents().visit([&](soinfo* si) {
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return !is_accessible_ftor(si);
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});
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}
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