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platform_system_core
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Merge "Reland: Fix libnativeloader to correctly link to the platform namespace."

This commit is contained in:
Martin Stjernholm 2019-05-02 10:40:04 +00:00 committed by Gerrit Code Review
parent 7a7c71b2b6 c57ed29dd5
commit 2d3becd361
4 changed files with 82 additions and 47 deletions
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45
libnativeloader/native_loader.cpp
View File

@ -126,7 +126,7 @@ static constexpr const char* kRuntimeNamespaceName = "runtime";
// classloader, the classloader-namespace namespace associated with that
// classloader is selected for dlopen. The namespace is configured so that its
// search path is set to the app-local JNI directory and it is linked to the
// default namespace with the names of libs listed in the public.libraries.txt.
// platform namespace with the names of libs listed in the public.libraries.txt.
// This way an app can only load its own JNI libraries along with the public libs.
static constexpr const char* kClassloaderNamespaceName = "classloader-namespace";
// Same thing for vendor APKs.
@ -309,21 +309,24 @@ class LibraryNamespaces {
}
}
std::string runtime_exposed_libraries = base::Join(kRuntimePublicLibraries, ":");
std::string runtime_exposed_libraries = runtime_public_libraries_;
NativeLoaderNamespace native_loader_ns;
if (!is_native_bridge) {
// The platform namespace is called "default" for binaries in /system and
// "platform" for those in the Runtime APEX. Try "platform" first since
// "default" always exists.
android_namespace_t* platform_ns = android_get_exported_namespace(kPlatformNamespaceName);
if (platform_ns == nullptr) {
platform_ns = android_get_exported_namespace(kDefaultNamespaceName);
}
android_namespace_t* android_parent_ns;
if (parent_ns != nullptr) {
android_parent_ns = parent_ns->get_android_ns();
} else {
// Fall back to the platform namespace if no parent is found. It is
// called "default" for binaries in /system and "platform" for those in
// the Runtime APEX. Try "platform" first since "default" always exists.
android_parent_ns = android_get_exported_namespace(kPlatformNamespaceName);
if (android_parent_ns == nullptr) {
android_parent_ns = android_get_exported_namespace(kDefaultNamespaceName);
}
// Fall back to the platform namespace if no parent is found.
android_parent_ns = platform_ns;
}
android_namespace_t* ns = android_create_namespace(namespace_name,
@ -344,7 +347,7 @@ class LibraryNamespaces {
android_namespace_t* runtime_ns = android_get_exported_namespace(kRuntimeNamespaceName);
if (!android_link_namespaces(ns, nullptr, system_exposed_libraries.c_str())) {
if (!android_link_namespaces(ns, platform_ns, system_exposed_libraries.c_str())) {
*error_msg = dlerror();
return nullptr;
}
@ -374,14 +377,19 @@ class LibraryNamespaces {
native_loader_ns = NativeLoaderNamespace(ns);
} else {
// Same functionality as in the branch above, but calling through native bridge.
native_bridge_namespace_t* platform_ns =
NativeBridgeGetExportedNamespace(kPlatformNamespaceName);
if (platform_ns == nullptr) {
platform_ns = NativeBridgeGetExportedNamespace(kDefaultNamespaceName);
}
native_bridge_namespace_t* native_bridge_parent_namespace;
if (parent_ns != nullptr) {
native_bridge_parent_namespace = parent_ns->get_native_bridge_ns();
} else {
native_bridge_parent_namespace = NativeBridgeGetExportedNamespace(kPlatformNamespaceName);
if (native_bridge_parent_namespace == nullptr) {
native_bridge_parent_namespace = NativeBridgeGetExportedNamespace(kDefaultNamespaceName);
}
native_bridge_parent_namespace = platform_ns;
}
native_bridge_namespace_t* ns = NativeBridgeCreateNamespace(namespace_name,
@ -399,7 +407,7 @@ class LibraryNamespaces {
native_bridge_namespace_t* runtime_ns =
NativeBridgeGetExportedNamespace(kRuntimeNamespaceName);
if (!NativeBridgeLinkNamespaces(ns, nullptr, system_exposed_libraries.c_str())) {
if (!NativeBridgeLinkNamespaces(ns, platform_ns, system_exposed_libraries.c_str())) {
*error_msg = NativeBridgeGetError();
return nullptr;
}
@ -451,6 +459,7 @@ class LibraryNamespaces {
std::string root_dir = android_root_env != nullptr ? android_root_env : "/system";
std::string public_native_libraries_system_config =
root_dir + kPublicNativeLibrariesSystemConfigPathFromRoot;
std::string runtime_public_libraries = base::Join(kRuntimePublicLibraries, ":");
std::string llndk_native_libraries_system_config =
root_dir + kLlndkNativeLibrariesSystemConfigPathFromRoot;
std::string vndksp_native_libraries_system_config =
@ -472,6 +481,10 @@ class LibraryNamespaces {
std::vector<std::string> additional_libs_vector = base::Split(additional_libs, ":");
std::copy(additional_libs_vector.begin(), additional_libs_vector.end(),
std::back_inserter(sonames));
// Apply the same list to the runtime namespace, since some libraries
// might reside there.
CHECK(sizeof(kRuntimePublicLibraries) > 0);
runtime_public_libraries = runtime_public_libraries + ':' + additional_libs;
}
}
@ -497,6 +510,7 @@ class LibraryNamespaces {
}
system_public_libraries_ = base::Join(sonames, ':');
runtime_public_libraries_ = runtime_public_libraries;
// read /system/etc/public.libraries-<companyname>.txt which contain partner defined
// system libs that are exposed to apps. The libs in the txt files must be
@ -724,6 +738,7 @@ class LibraryNamespaces {
bool initialized_;
std::list<std::pair<jweak, NativeLoaderNamespace>> namespaces_;
std::string system_public_libraries_;
std::string runtime_public_libraries_;
std::string vendor_public_libraries_;
std::string oem_public_libraries_;
std::string product_public_libraries_;

14
rootdir/etc/ld.config.legacy.txt
View File

@ -20,6 +20,9 @@ dir.legacy = /data
[legacy]
namespace.default.isolated = false
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.default.visible = true
namespace.default.search.paths = /system/${LIB}
namespace.default.search.paths += /product/${LIB}
@ -41,7 +44,7 @@ namespace.default.asan.search.paths += /odm/${LIB}
additional.namespaces = runtime,conscrypt,media,resolv
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
# Keep in sync with the "platform" namespace in art/build/apex/ld.config.txt.
# If a shared library or an executable requests a shared library that
# cannot be loaded into the default namespace, the dynamic linker tries
# to load the shared library from the runtime namespace. And then, if the
@ -50,9 +53,6 @@ additional.namespaces = runtime,conscrypt,media,resolv
# Finally, if all attempts fail, the dynamic linker returns an error.
namespace.default.links = runtime,resolv
namespace.default.asan.links = runtime,resolv
# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
# libart.
namespace.default.visible = true
namespace.default.link.runtime.shared_libs = libandroidicu.so
namespace.default.link.runtime.shared_libs += libdexfile_external.so
namespace.default.link.runtime.shared_libs += libdexfiled_external.so
@ -72,11 +72,13 @@ namespace.default.link.resolv.shared_libs = libnetd_resolv.so
# "runtime" APEX namespace
#
# This namespace exposes externally accessible libraries from the Runtime APEX.
# Keep in sync with the "runtime" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.runtime.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.runtime.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.links = default
@ -120,11 +122,11 @@ namespace.media.link.default.shared_libs += libclang_rt.hwasan-aarch64-android.s
# "conscrypt" APEX namespace
#
# This namespace is for libraries within the conscrypt APEX.
# Keep in sync with the "conscrypt" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.conscrypt.isolated = true
namespace.conscrypt.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.links = runtime,default

34
rootdir/etc/ld.config.txt
View File

@ -43,6 +43,9 @@ additional.namespaces = runtime,conscrypt,media,resolv,sphal,vndk,rs
# can't be loaded in this namespace.
###############################################################################
namespace.default.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.default.visible = true
namespace.default.search.paths = /system/${LIB}
namespace.default.search.paths += /%PRODUCT%/${LIB}
@ -121,7 +124,7 @@ namespace.default.asan.permitted.paths += /mnt/expand
namespace.default.asan.permitted.paths += /apex/com.android.runtime/${LIB}/bionic
namespace.default.asan.permitted.paths += /system/${LIB}/bootstrap
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
# Keep in sync with the "platform" namespace in art/build/apex/ld.config.txt.
# If a shared library or an executable requests a shared library that
# cannot be loaded into the default namespace, the dynamic linker tries
# to load the shared library from the runtime namespace. And then, if the
@ -129,9 +132,6 @@ namespace.default.asan.permitted.paths += /system/${LIB}/bootstrap
# dynamic linker tries to load the shared library from the resolv namespace.
# Finally, if all attempts fail, the dynamic linker returns an error.
namespace.default.links = runtime,resolv
# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
# libart.
namespace.default.visible = true
namespace.default.link.runtime.shared_libs = libandroidicu.so
namespace.default.link.runtime.shared_libs += libdexfile_external.so
namespace.default.link.runtime.shared_libs += libdexfiled_external.so
@ -151,11 +151,13 @@ namespace.default.link.resolv.shared_libs = libnetd_resolv.so
# "runtime" APEX namespace
#
# This namespace exposes externally accessible libraries from the Runtime APEX.
# Keep in sync with the "runtime" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.runtime.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.runtime.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.links = default
@ -188,11 +190,11 @@ namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
# "conscrypt" APEX namespace
#
# This namespace is for libraries within the conscrypt APEX.
# Keep in sync with the "conscrypt" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.conscrypt.isolated = true
namespace.conscrypt.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.links = runtime,default
@ -235,6 +237,8 @@ namespace.resolv.link.default.shared_libs += libvndksupport.so
# Note that there is no link from the default namespace to this namespace.
###############################################################################
namespace.sphal.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.sphal.visible = true
namespace.sphal.search.paths = /odm/${LIB}
@ -324,6 +328,8 @@ namespace.rs.link.vndk.shared_libs = %VNDK_SAMEPROCESS_LIBRARIES%
# This namespace is exclusively for vndk-sp libs.
###############################################################################
namespace.vndk.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.vndk.visible = true
namespace.vndk.search.paths = /odm/${LIB}/vndk-sp
@ -431,10 +437,10 @@ namespace.default.link.vndk.shared_libs += %VNDK_CORE_LIBRARIES%
# "runtime" APEX namespace
#
# This namespace exposes externally accessible libraries from the Runtime APEX.
# Keep in sync with the "runtime" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.runtime.isolated = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.links = system
@ -566,6 +572,10 @@ namespace.vndk_in_system.link.vndk.allow_all_shared_libs = true
[unrestricted]
additional.namespaces = runtime,media,conscrypt,resolv
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.default.visible = true
namespace.default.search.paths = /system/${LIB}
namespace.default.search.paths += /odm/${LIB}
namespace.default.search.paths += /vendor/${LIB}
@ -577,10 +587,8 @@ namespace.default.asan.search.paths += /odm/${LIB}
namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
namespace.default.asan.search.paths += /vendor/${LIB}
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
# Keep in sync with the "platform" namespace in art/build/apex/ld.config.txt.
namespace.default.links = runtime,resolv
namespace.default.visible = true
namespace.default.link.runtime.shared_libs = libandroidicu.so
namespace.default.link.runtime.shared_libs += libdexfile_external.so
namespace.default.link.runtime.shared_libs += libdexfiled_external.so
@ -597,11 +605,13 @@ namespace.default.link.resolv.shared_libs = libnetd_resolv.so
# "runtime" APEX namespace
#
# This namespace exposes externally accessible libraries from the Runtime APEX.
# Keep in sync with the "runtime" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.runtime.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.runtime.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.links = default
@ -632,11 +642,11 @@ namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
# "conscrypt" APEX namespace
#
# This namespace is for libraries within the conscrypt APEX.
# Keep in sync with the "conscrypt" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.conscrypt.isolated = true
namespace.conscrypt.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.links = runtime,default

36
rootdir/etc/ld.config.vndk_lite.txt
View File

@ -43,6 +43,9 @@ additional.namespaces = runtime,conscrypt,media,resolv,sphal,vndk,rs
# partitions are also allowed temporarily.
###############################################################################
namespace.default.isolated = false
# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
# libart.
namespace.default.visible = true
namespace.default.search.paths = /system/${LIB}
namespace.default.search.paths += /odm/${LIB}
@ -61,8 +64,7 @@ namespace.default.asan.search.paths += /%PRODUCT%/${LIB}
namespace.default.asan.search.paths += /data/asan/%PRODUCT_SERVICES%/${LIB}
namespace.default.asan.search.paths += /%PRODUCT_SERVICES%/${LIB}
# Keep in sync with the platform namespace in the com.android.runtime APEX
# ld.config.txt.
# Keep in sync with the "platform" namespace in art/build/apex/ld.config.txt.
# If a shared library or an executable requests a shared library that
# cannot be loaded into the default namespace, the dynamic linker tries
# to load the shared library from the runtime namespace. And then, if the
@ -70,9 +72,6 @@ namespace.default.asan.search.paths += /%PRODUCT_SERVICES%/${LIB}
# dynamic linker tries to load the shared library from the resolv namespace.
# Finally, if all attempts fail, the dynamic linker returns an error.
namespace.default.links = runtime,resolv
# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
# libart.
namespace.default.visible = true
namespace.default.link.runtime.shared_libs = libandroidicu.so
namespace.default.link.runtime.shared_libs += libdexfile_external.so
namespace.default.link.runtime.shared_libs += libdexfiled_external.so
@ -92,12 +91,13 @@ namespace.default.link.resolv.shared_libs = libnetd_resolv.so
# "runtime" APEX namespace
#
# This namespace pulls in externally accessible libs from the Runtime APEX.
# Keep in sync with the "runtime" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.runtime.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.runtime.visible = true
# Keep in sync with the default namespace in the com.android.runtime APEX
# ld.config.txt.
namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.links = default
@ -130,11 +130,11 @@ namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
# "conscrypt" APEX namespace
#
# This namespace is for libraries within the conscrypt APEX.
# Keep in sync with the "conscrypt" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.conscrypt.isolated = true
namespace.conscrypt.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.links = runtime,default
@ -177,6 +177,8 @@ namespace.resolv.link.default.shared_libs += libvndksupport.so
# Note that there is no link from the default namespace to this namespace.
###############################################################################
namespace.sphal.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.sphal.visible = true
namespace.sphal.search.paths = /odm/${LIB}
@ -266,6 +268,8 @@ namespace.rs.link.vndk.shared_libs = %VNDK_SAMEPROCESS_LIBRARIES%
# This namespace is exclusively for vndk-sp libs.
###############################################################################
namespace.vndk.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.vndk.visible = true
namespace.vndk.search.paths = /odm/${LIB}/vndk-sp
@ -369,10 +373,10 @@ namespace.default.link.runtime.shared_libs += libandroidicu.so
# "runtime" APEX namespace
#
# This namespace exposes externally accessible libraries from the Runtime APEX.
# Keep in sync with the "runtime" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.runtime.isolated = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.links = default
@ -389,6 +393,10 @@ namespace.runtime.link.default.allow_all_shared_libs = true
[unrestricted]
additional.namespaces = runtime,media,conscrypt,resolv
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.default.visible = true
namespace.default.search.paths = /system/${LIB}
namespace.default.search.paths += /odm/${LIB}
namespace.default.search.paths += /vendor/${LIB}
@ -400,10 +408,8 @@ namespace.default.asan.search.paths += /odm/${LIB}
namespace.default.asan.search.paths += /data/asan/vendor/${LIB}
namespace.default.asan.search.paths += /vendor/${LIB}
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
# Keep in sync with the "platform" namespace in art/build/apex/ld.config.txt.
namespace.default.links = runtime,resolv
namespace.default.visible = true
namespace.default.link.runtime.shared_libs = libandroidicu.so
namespace.default.link.runtime.shared_libs += libdexfile_external.so
namespace.default.link.runtime.shared_libs += libdexfiled_external.so
@ -420,11 +426,13 @@ namespace.default.link.resolv.shared_libs = libnetd_resolv.so
# "runtime" APEX namespace
#
# This namespace exposes externally accessible libraries from the Runtime APEX.
# Keep in sync with the "runtime" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.runtime.isolated = true
# Visible to allow links to be created at runtime, e.g. through
# android_link_namespaces in libnativeloader.
namespace.runtime.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.asan.search.paths = /apex/com.android.runtime/${LIB}
namespace.runtime.links = default
@ -455,11 +463,11 @@ namespace.media.link.default.shared_libs += %SANITIZER_RUNTIME_LIBRARIES%
# "conscrypt" APEX namespace
#
# This namespace is for libraries within the conscrypt APEX.
# Keep in sync with the "conscrypt" namespace in art/build/apex/ld.config.txt.
###############################################################################
namespace.conscrypt.isolated = true
namespace.conscrypt.visible = true
# Keep in sync with ld.config.txt in the com.android.runtime APEX.
namespace.conscrypt.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.asan.search.paths = /apex/com.android.conscrypt/${LIB}
namespace.conscrypt.links = runtime,default