linker: Allow link namespaces without name filters
This commit allows users to create a link without soname filters between
two linker namespaces.
The motivation is to establish one-way shared library isolation. For
example, assume that there are two linker namespaces `default` and
`vndk`. We would like to limit the shared libraries that can be used by
the `default` namespace. In the meanwhile, we would like to allow the
`vndk` namespace to use shared libs from the `default` namespace if the
soname cannot be find in the search path or loaded sonames of the `vndk`
namespace.
shared_libs = %VNDK_CORE_LIBRARIES%
shared_libs += %VNDK_SAMEPROCESS_LIBRARIES%
vndk <-------------------------------------------- default
\_______________________________________________/^
allow_all_shared_libs = true
android_link_namespaces_all_libs() is added to libdl, but it is
versioned as LIBC_PRIVATE. android_link_namespaces_all_libs() is only
for unit tests.
Bug: 69824336
Test: adb shell /data/nativetest/linker-unit-tests/linker-unit-tests32
Test: adb shell /data/nativetest64/linker-unit-tests/linker-unit-tests64
Test: adb shell /data/nativetest/bionic-unit-tests/bionic-unit-tests
Test: adb shell /data/nativetest64/bionic-unit-tests/bionic-unit-tests
Test: Update /system/etc/ld.config*.txt and check whether the vndk
linker namespace of the vendor process can access the shared libs from
the default linker namespace.
Change-Id: I2879f0c5f5af60c7e56f8f743ebd2872e552286b
diff --git a/tests/libs/Android.bp b/tests/libs/Android.bp
index 61a837f..cae30b5 100644
--- a/tests/libs/Android.bp
+++ b/tests/libs/Android.bp
@@ -259,6 +259,58 @@
}
// -----------------------------------------------------------------------------
+// Build test helper libraries for linker namespaces for allow all shared libs
+//
+// This set of libraries is used to verify linker namespaces for allow all
+// shared libs.
+//
+// Test cases
+// 1. Check that namespace a exposes libnstest_ns_a_public1 to
+// namespace b while keeping libnstest_ns_a_public1_internal as an
+// internal lib.
+// 2. Check that namespace b exposes all libraries to namespace a.
+//
+// Dependency tree (visibility)
+// libnstest_ns_b_public2.so (ns:b)
+// +-> libnstest_ns_a_public1.so (ns:a)
+// +-> libnstest_ns_a_public2_internal.so (ns:a)
+// +-> libnstest_ns_b_public3.so (ns:b)
+//
+// -----------------------------------------------------------------------------
+cc_test_library {
+ name: "libnstest_ns_a_public1",
+ defaults: ["bionic_testlib_defaults"],
+ srcs: ["libnstest_ns_a_public1.cpp"],
+ relative_install_path: "bionic-loader-test-libs/ns_a",
+ shared_libs: [
+ "libnstest_ns_a_public1_internal",
+ "libnstest_ns_b_public3",
+ ],
+}
+
+cc_test_library {
+ name: "libnstest_ns_a_public1_internal",
+ defaults: ["bionic_testlib_defaults"],
+ srcs: ["libnstest_ns_a_public1_internal.cpp"],
+ relative_install_path: "bionic-loader-test-libs/ns_a",
+}
+
+cc_test_library {
+ name: "libnstest_ns_b_public2",
+ defaults: ["bionic_testlib_defaults"],
+ srcs: ["libnstest_ns_b_public2.cpp"],
+ relative_install_path: "bionic-loader-test-libs/ns_b",
+ shared_libs: ["libnstest_ns_a_public1"],
+}
+
+cc_test_library {
+ name: "libnstest_ns_b_public3",
+ defaults: ["bionic_testlib_defaults"],
+ srcs: ["libnstest_ns_b_public3.cpp"],
+ relative_install_path: "bionic-loader-test-libs/ns_b",
+}
+
+// -----------------------------------------------------------------------------
// Build DT_RUNPATH test helper libraries
// -----------------------------------------------------------------------------
// include $(LOCAL_PATH)/Android.build.dt_runpath.mk