1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // SP-HAL(Sameprocess-HAL)s are the only vendor libraries that are allowed to be 18 // loaded inside system processes. libEGL_<chipset>.so, libGLESv2_<chipset>.so, 19 // android.hardware.graphics.mapper@2.0-impl.so, etc are SP-HALs. 20 // 21 // This namespace is exclusivly for SP-HALs. When the framework tries to 22 // dynamically load SP-HALs, android_dlopen_ext() is used to explicitly specify 23 // that they should be searched and loaded from this namespace. 24 // 25 // Note that there is no link from the default namespace to this namespace. 26 27 #include "linkerconfig/namespacebuilder.h" 28 29 using android::linkerconfig::modules::Namespace; 30 31 namespace android { 32 namespace linkerconfig { 33 namespace contents { 34 Namespace BuildSphalNamespace([[maybe_unused]] const Context& ctx) { 35 // Visible to allow use with android_dlopen_ext, and with 36 // android_link_namespaces in libnativeloader. 37 Namespace ns("sphal", 38 /*is_isolated=*/!ctx.IsUnrestrictedSection(), 39 /*is_visible=*/true); 40 ns.AddSearchPath("/odm/${LIB}"); 41 ns.AddSearchPath("/vendor/${LIB}"); 42 ns.AddSearchPath("/vendor/${LIB}/egl"); 43 ns.AddSearchPath("/vendor/${LIB}/hw"); 44 45 ns.AddPermittedPath("/odm/${LIB}"); 46 ns.AddPermittedPath("/vendor/${LIB}"); 47 ns.AddPermittedPath("/system/vendor/${LIB}"); 48 49 if (ctx.IsApexBinaryConfig() && !ctx.IsVndkAvailable()) { 50 // If device is legacy, let Sphal libraries access to system lib path for 51 // VNDK-SP libraries 52 ns.AddSearchPath("/system/${LIB}"); 53 ns.AddPermittedPath("/system/${LIB}"); 54 } 55 56 if (ctx.IsApexBinaryConfig()) { 57 if (ctx.IsVndkAvailable()) { 58 ns.AddRequires(std::vector{":vndksp"}); 59 ns.GetLink(ctx.GetSystemNamespaceName()) 60 .AddSharedLib(Var("LLNDK_LIBRARIES_VENDOR", "")); 61 } 62 } else { 63 // Once in this namespace, access to libraries in /system/lib is restricted. 64 // Only libs listed here can be used. Order is important here as the 65 // namespaces are tried in this order. rs should be before vndk because both 66 // are capable of loading libRS_internal.so 67 if (ctx.IsSystemSection() || ctx.IsUnrestrictedSection()) { 68 ns.GetLink("rs").AddSharedLib("libRS_internal.so"); 69 } 70 ns.GetLink(ctx.GetSystemNamespaceName()) 71 .AddSharedLib(Var("LLNDK_LIBRARIES_VENDOR", "")); 72 ns.GetLink("vndk").AddSharedLib( 73 Var("VNDK_SAMEPROCESS_LIBRARIES_VENDOR", "")); 74 ns.AddRequires(std::vector{"libneuralnetworks.so"}); 75 } 76 77 return ns; 78 } 79 } // namespace contents 80 } // namespace linkerconfig 81 } // namespace android 82