From 333845c710822e16fc8a6d7d32f931416beb8dbb Mon Sep 17 00:00:00 2001
From: Justin Yun <justinyun@google.com>
Date: Fri, 16 Jun 2017 18:11:35 +0900
Subject: [PATCH] Implement system namespace for vendor process

For vendor process default namespace searches as following order:
1. /vendor/lib/(hw|egl), /vendor/lib: Vendor libs + VNDK-vnd-ext
2. /system/lib/vndk-$(ver): VNDK libs
3. /vendor/lib/vndk-sp-$(ver): VNDK-SP-vnd-ext
4. /system/lib/vndk-sp-$(ver): VNDK-SP
and searches system namespace (/system/lib) only for LL-NDK libs.
This configuarion is used only with BOARD_VNDK_VERSION is defined.

Bug: 37192038
Test: build with 'BOARD_VNDK_VERSION=current' and boot

Merged-In: If9778b9266a084846ba8fe73e6bff25828359d33
Change-Id: If9778b9266a084846ba8fe73e6bff25828359d33
(cherry picked from commit 24c29f1be49f47a6d8a098a10591d9c3f0d4e8ee)
---
 rootdir/Android.mk             |   8 ++
 rootdir/etc/ld.config.vndk.txt | 158 +++++++++++++++++++++++++++++++++
 2 files changed, 166 insertions(+)
 create mode 100644 rootdir/etc/ld.config.vndk.txt

diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index cebcb7faf..ae75ae299 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -180,7 +180,15 @@ include $(CLEAR_VARS)
 
 LOCAL_MODULE := ld.config.txt
 ifeq ($(PRODUCT_FULL_TREBLE)|$(SANITIZE_TARGET),true|)
+ifdef BOARD_VNDK_VERSION
+  ifeq ($(BOARD_VNDK_RUNTIME_DISABLE),true)
+    LOCAL_SRC_FILES := etc/ld.config.txt
+  else
+    LOCAL_SRC_FILES := etc/ld.config.vndk.txt
+  endif
+else
 LOCAL_SRC_FILES := etc/ld.config.txt
+endif
 else
 LOCAL_SRC_FILES := etc/ld.config.legacy.txt
 endif
diff --git a/rootdir/etc/ld.config.vndk.txt b/rootdir/etc/ld.config.vndk.txt
new file mode 100644
index 000000000..c7e257344
--- /dev/null
+++ b/rootdir/etc/ld.config.vndk.txt
@@ -0,0 +1,158 @@
+# Copyright (C) 2017 The Android Open Source Project
+#
+# Bionic loader config file.
+#
+
+# Don't change the order here. The first pattern that matches with the
+# absolution path of an executable is selected.
+dir.system = /system/bin/
+dir.system = /system/xbin/
+dir.vendor = /vendor/bin/
+dir.vendor = /data/nativetest/vendor
+dir.vendor = /data/nativetest64/vendor
+dir.vendor = /data/benchmarktest/vendor
+dir.vendor = /data/benchmarktest64/vendor
+dir.system = /data/nativetest
+dir.system = /data/nativetest64
+dir.system = /data/benchmarktest
+dir.system = /data/benchmarktest64
+
+[system]
+additional.namespaces = sphal,vndk,rs
+
+###############################################################################
+# "default" namespace
+#
+# Framework-side code runs in this namespace. Anything from /vendor partition
+# can't be loaded in this namespace.
+###############################################################################
+namespace.default.isolated = false
+namespace.default.search.paths = /system/${LIB}:/vendor/${LIB}
+namespace.default.permitted.paths = /system/${LIB}:/vendor/${LIB}
+
+namespace.default.asan.search.paths = /data/asan/system/${LIB}:/system/${LIB}:/data/asan/vendor/${LIB}:/vendor/${LIB}
+namespace.default.asan.permitted.paths = /data/asan/system/${LIB}:/system/${LIB}:/data/asan/vendor/${LIB}:/vendor/${LIB}
+
+# TODO(b/37013858): remove all dependencies to /vendor/lib from system processes
+# When this is done, comment out following three lines and remove the three
+# lines above
+#namespace.default.isolated = true
+#namespace.default.search.paths = /system/${LIB}
+#namespace.default.permitted.paths = /system/${LIB}
+#
+#namespace.default.asan.search.paths = /data/asan/system/${LIB}:/system/${LIB}
+#namespace.default.asan.permitted.paths = /data/asan/system/${LIB}:/system/${LIB}
+
+###############################################################################
+# "sphal" namespace
+#
+# SP-HAL(Sameprocess-HAL)s are the only vendor libraries that are allowed to be
+# loaded inside system processes. libEGL_<chipset>.so, libGLESv2_<chipset>.so,
+# android.hardware.graphics.mapper@2.0-impl.so, etc are SP-HALs.
+#
+# This namespace is exclusivly for SP-HALs. When the framework tries to dynami-
+# cally load SP-HALs, android_dlopen_ext() is used to explicitly specifying
+# that they should be searched and loaded from this namespace.
+#
+# Note that there is no link from the default namespace to this namespace.
+###############################################################################
+namespace.sphal.isolated = true
+namespace.sphal.visible = true
+namespace.sphal.search.paths = /vendor/${LIB}/egl:/vendor/${LIB}/hw:/vendor/${LIB}
+namespace.sphal.permitted.paths = /vendor/${LIB}:/system/${LIB}/vndk-sp/hw
+
+namespace.sphal.asan.search.paths = /data/asan/vendor/${LIB}/egl:/vendor/${LIB}/egl:/data/asan/vendor/${LIB}/hw:/vendor/${LIB}/hw:/data/asan/vendor/${LIB}:/vendor/${LIB}
+namespace.sphal.asan.permitted.paths = /data/asan/vendor/${LIB}:/vendor/${LIB}
+
+# Once in this namespace, access to libraries in /system/lib is restricted. Only
+# libs listed here can be used.
+namespace.sphal.links = default,vndk,rs
+
+# WARNING: only NDK libs can be listed here.
+namespace.sphal.link.default.shared_libs = libEGL.so:libm.so:libandroid_net.so:libvndksupport.so:libc.so:libGLESv1_CM.so:liblog.so:libsync.so:libnativewindow.so:libGLESv3.so:libdl.so:libGLESv2.so
+
+# WARNING: only VNDK-SP libs can be listed here. DO NOT EDIT this line.
+namespace.sphal.link.vndk.shared_libs = libhardware.so:libc++.so:libhidlbase.so:libhwbinder.so:libhidltransport.so:libbase.so:libhidlmemory.so:libRS.so:libRSDriver.so:libcutils.so:libion.so:libRSCpuRef.so:android.hardware.graphics.common@1.0.so:android.hardware.graphics.mapper@2.0.so:android.hidl.memory@1.0.so:libbcinfo.so:android.hardware.graphics.allocator@2.0.so:android.hardware.renderscript@1.0.so:libutils.so:libz.so
+
+# Renderscript gets separate namespace
+namespace.sphal.link.rs.shared_libs = libRS_internal.so
+
+###############################################################################
+# "rs" namespace
+#
+# This namespace is exclusively for Renderscript internal libraries.
+# This namespace has slightly looser restriction than the vndk namespace because
+# of the genuine characteristics of Renderscript; /data is in the permitted path
+# to load the compiled *.so file and libmediandk.so can be used here.
+###############################################################################
+namespace.rs.isolated = true
+namespace.rs.visible = true
+namespace.rs.search.paths = /vendor/${LIB}/vndk-sp:/system/${LIB}/vndk-sp:/vendor/${LIB}
+namespace.rs.permitted.paths = /vendor/${LIB}:/data
+
+namespace.rs.asan.search.paths = /data/asan/vendor/${LIB}/vndk-sp:/vendor/${LIB}/vndk-sp:/data/asan/system/${LIB}/vndk-sp:/system/${LIB}/vndk-sp:/data/asan/vendor/${LIB}:/vendor/${LIB}
+namespace.rs.asan.permitted.paths = /data/asan/vendor/${LIB}:/vendor/${LIB}:/data
+
+namespace.rs.links = default,vndk
+namespace.rs.link.default.shared_libs = libEGL.so:libm.so:libandroid_net.so:libvndksupport.so:libc.so:libGLESv1_CM.so:liblog.so:libsync.so:libnativewindow.so:libGLESv3.so:libdl.so:libGLESv2.so:libmediandk.so:libft2.so
+namespace.rs.link.vndk.shared_libs = libhardware.so:libc++.so:libhidlbase.so:libhwbinder.so:libhidltransport.so:libbase.so:libhidlmemory.so:libRS.so:libRSDriver.so:libcutils.so:libion.so:libRSCpuRef.so:android.hardware.graphics.common@1.0.so:android.hardware.graphics.mapper@2.0.so:android.hidl.memory@1.0.so:libbcinfo.so:android.hardware.graphics.allocator@2.0.so:android.hardware.renderscript@1.0.so:libutils.so:libz.so
+
+###############################################################################
+# "vndk" namespace
+#
+# This namespace is exclusively for vndk-sp libs.
+###############################################################################
+namespace.vndk.isolated = true
+namespace.vndk.search.paths = /vendor/${LIB}/vndk-sp:/system/${LIB}/vndk-sp
+namespace.vndk.permitted.paths = /vendor/${LIB}/hw:/vendor/${LIB}/egl
+
+namespace.vndk.asan.search.paths = /data/asan/vendor/${LIB}/vndk-sp:/vendor/${LIB}/vndk-sp:/data/asan/system/${LIB}/vndk-sp:/system/${LIB}/vndk-sp
+namespace.vndk.asan.permitted.paths = /data/asan/vendor/${LIB}/hw:/vendor/${LIB}/hw:/data/asan/vendor/${LIB}/egl:/vendor/${LIB}/egl
+
+# When these NDK libs are required inside this namespace, then it is redirected
+# to the default namespace. This is possible since their ABI is stable across
+# Android releases.
+namespace.vndk.links = default
+namespace.vndk.link.default.shared_libs = libEGL.so:libm.so:libandroid_net.so:libvndksupport.so:libc.so:libGLESv1_CM.so:liblog.so:libsync.so:libnativewindow.so:libGLESv3.so:libdl.so:libGLESv2.so
+
+###############################################################################
+# Namespace config for vendor processes. In O, no restriction is enforced for
+# them. However, in O-MR1, access to /system/${LIB} will not be allowed to
+# the default namespace. 'system' namespace will be added to give limited
+# (LL-NDK only) access.
+###############################################################################
+[vendor]
+additional.namespaces = system
+
+###############################################################################
+# "default" namespace
+#
+# Vendor-side code runs in this namespace.
+###############################################################################
+namespace.default.isolated = true
+namespace.default.visible = true
+
+namespace.default.search.paths = /vendor/${LIB}/hw:/vendor/${LIB}/egl:/vendor/${LIB}:/system/${LIB}/vndk:/vendor/${LIB}/vndk-sp:/system/${LIB}/vndk-sp
+namespace.default.permitted.paths = /vendor:/system/${LIB}/vndk:/system/${LIB}/vndk-sp
+
+namespace.default.asan.search.paths = /data/asan/vendor/${LIB}/hw:/vendor/${LIB}/hw:/data/asan/vendor/${LIB}/egl:/vendor/${LIB}/egl:/data/asan/vendor/${LIB}:/vendor/${LIB}:/data/asan/system/${LIB}/vndk:/system/${LIB}/vndk:/data/asan/vendor/${LIB}/vndk-sp:/vendor/${LIB}/vndk-sp:/data/asan/system/${LIB}/vndk-sp:/system/${LIB}/vndk-sp
+namespace.default.asan.permitted.paths = /data/asan/vendor:/vendor:/data/asan/system/${LIB}/vndk:/system/${LIB}/vndk:/data/asan/system/${LIB}/vndk-sp:/system/${LIB}/vndk-sp
+
+namespace.default.links = system
+namespace.default.link.system.shared_libs = libEGL.so:libm.so:libandroid_net.so:libvndksupport.so:libc.so:libGLESv1_CM.so:liblog.so:libsync.so:libnativewindow.so:libGLESv3.so:libdl.so:libGLESv2.so:libpowermanager.so:libmedia.so:libandroid_runtime.so
+# libpowermanager.so must be removed after we have fix for libsdm-color.so (b/64732165)
+# libmedia.so must be removed after we have fix for lib-dplmedia.so (b/64427765)
+# libandroid_runtime.so must be removed after we have a fix for qseeproxydaemon (b/64820887)
+
+###############################################################################
+# "system" namespace
+#
+# This is for vendor process to use LL-NDK in system partition.
+###############################################################################
+namespace.system.isolated = false
+namespace.system.search.paths = /system/${LIB}
+namespace.system.permitted.paths = /system/${LIB}
+
+namespace.system.asan.search.paths = /data/asan/system/${LIB}:/system/${LIB}
+namespace.system.asan.permitted.paths = /data/asan/system/${LIB}:/system/${LIB}
+