2 * Copyright (C) 2016 The Android Open Source Project
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29 #include "linker_namespaces.h"
30 #include "linker_globals.h"
31 #include "linker_soinfo.h"
32 #include "linker_utils.h"
36 bool android_namespace_t::is_accessible(const std::string& file) {
41 for (const auto& dir : ld_library_paths_) {
42 if (file_is_in_dir(file, dir)) {
47 for (const auto& dir : default_library_paths_) {
48 if (file_is_in_dir(file, dir)) {
53 for (const auto& dir : permitted_paths_) {
54 if (file_is_under_dir(file, dir)) {
62 bool android_namespace_t::is_accessible(soinfo* s) {
63 auto is_accessible_ftor = [this] (soinfo* si) {
64 // This is workaround for apps hacking into soinfo list.
65 // and inserting their own entries into it. (http://b/37191433)
66 if (!si->has_min_version(3)) {
67 DL_WARN("invalid soinfo version for \"%s\"", si->get_soname());
71 if (si->get_primary_namespace() == this) {
75 const android_namespace_list_t& secondary_namespaces = si->get_secondary_namespaces();
76 if (secondary_namespaces.find(this) != secondary_namespaces.end()) {
83 if (is_accessible_ftor(s)) {
87 return !s->get_parents().visit([&](soinfo* si) {
88 return !is_accessible_ftor(si);
92 // TODO: this is slightly unusual way to construct
93 // the global group for relocation. Not every RTLD_GLOBAL
94 // library is included in this group for backwards-compatibility
97 // This group consists of the main executable, LD_PRELOADs
98 // and libraries with the DF_1_GLOBAL flag set.
99 soinfo_list_t android_namespace_t::get_global_group() {
100 soinfo_list_t global_group;
101 soinfo_list().for_each([&](soinfo* si) {
102 if ((si->get_dt_flags_1() & DF_1_GLOBAL) != 0) {
103 global_group.push_back(si);
110 // This function provides a list of libraries to be shared
111 // by the namespace. For the default namespace this is the global
112 // group (see get_global_group). For all others this is a group
113 // of RTLD_GLOBAL libraries (which includes the global group from
114 // the default namespace).
115 soinfo_list_t android_namespace_t::get_shared_group() {
116 if (this == &g_default_namespace) {
117 return get_global_group();
120 soinfo_list_t shared_group;
121 soinfo_list().for_each([&](soinfo* si) {
122 if ((si->get_rtld_flags() & RTLD_GLOBAL) != 0) {
123 shared_group.push_back(si);