Switch linker tests to Android.bp.

Life is easier if we just keep test code in the same directory as the
stuff it's testing...

Test: tests still build and pass
Change-Id: I9b35d689098bdc28a71d69645b0ca9fdd6ea0108

1 files changed, 291 insertions, 0 deletions

diff --git a/linker/linker_config_test.cpp b/linker/linker_config_test.cpp
new file mode 100644
index 000000000..6a55bb2b3
--- /dev/null
+++ b/linker/linker_config_test.cpp
@@ -0,0 +1,291 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include <gtest/gtest.h>
+
+#include "linker_config.h"
+#include "linker_utils.h"
+
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/scopeguard.h>
+#include <android-base/stringprintf.h>
+
+#if defined(__LP64__)
+#define ARCH_SUFFIX "64"
+#else
+#define ARCH_SUFFIX ""
+#endif
+
+static const char* config_str =
+  "# comment \n"
+  "dir.test = /data/local/tmp\n"
+  "\n"
+  "[test]\n"
+  "\n"
+  "enable.target.sdk.version = true\n"
+  "additional.namespaces=system\n"
+  "additional.namespaces+=vndk\n"
+  "namespace.default.isolated = true\n"
+  "namespace.default.search.paths = /vendor/${LIB}\n"
+  "namespace.default.permitted.paths = /vendor/${LIB}\n"
+  "namespace.default.asan.search.paths = /data\n"
+  "namespace.default.asan.search.paths += /vendor/${LIB}\n"
+  "namespace.default.asan.permitted.paths = /data:/vendor\n"
+  "namespace.default.links = system\n"
+  "namespace.default.links += vndk\n"
+  // irregular whitespaces are added intentionally for testing purpose
+  "namespace.default.link.system.shared_libs=  libc.so\n"
+  "namespace.default.link.system.shared_libs +=   libm.so:libdl.so\n"
+  "namespace.default.link.system.shared_libs   +=libstdc++.so\n"
+  "namespace.default.link.vndk.shared_libs = libcutils.so:libbase.so\n"
+  "namespace.system.isolated = true\n"
+  "namespace.system.visible = true\n"
+  "namespace.system.search.paths = /system/${LIB}\n"
+  "namespace.system.permitted.paths = /system/${LIB}\n"
+  "namespace.system.asan.search.paths = /data:/system/${LIB}\n"
+  "namespace.system.asan.permitted.paths = /data:/system\n"
+  "namespace.vndk.isolated = tr\n"
+  "namespace.vndk.isolated += ue\n" // should be ignored and return as 'false'.
+  "namespace.vndk.search.paths = /system/${LIB}/vndk\n"
+  "namespace.vndk.asan.search.paths = /data\n"
+  "namespace.vndk.asan.search.paths += /system/${LIB}/vndk\n"
+  "namespace.vndk.links = default\n"
+  "namespace.vndk.link.default.allow_all_shared_libs = true\n"
+  "\n";
+
+static bool write_version(const std::string& path, uint32_t version) {
+  std::string content = android::base::StringPrintf("%d", version);
+  return android::base::WriteStringToFile(content, path);
+}
+
+static std::vector<std::string> resolve_paths(std::vector<std::string> paths) {
+  std::vector<std::string> resolved_paths;
+  resolve_paths(paths, &resolved_paths);
+  return resolved_paths;
+}
+
+static void run_linker_config_smoke_test(bool is_asan) {
+  const std::vector<std::string> kExpectedDefaultSearchPath =
+      resolve_paths(is_asan ? std::vector<std::string>({ "/data", "/vendor/lib" ARCH_SUFFIX }) :
+                              std::vector<std::string>({ "/vendor/lib" ARCH_SUFFIX }));
+
+  const std::vector<std::string> kExpectedDefaultPermittedPath =
+      resolve_paths(is_asan ? std::vector<std::string>({ "/data", "/vendor" }) :
+                              std::vector<std::string>({ "/vendor/lib" ARCH_SUFFIX }));
+
+  const std::vector<std::string> kExpectedSystemSearchPath =
+      resolve_paths(is_asan ? std::vector<std::string>({ "/data", "/system/lib" ARCH_SUFFIX }) :
+                              std::vector<std::string>({ "/system/lib" ARCH_SUFFIX }));
+
+  const std::vector<std::string> kExpectedSystemPermittedPath =
+      resolve_paths(is_asan ? std::vector<std::string>({ "/data", "/system" }) :
+                              std::vector<std::string>({ "/system/lib" ARCH_SUFFIX }));
+
+  const std::vector<std::string> kExpectedVndkSearchPath =
+      resolve_paths(is_asan ? std::vector<std::string>({ "/data", "/system/lib" ARCH_SUFFIX "/vndk"}) :
+                              std::vector<std::string>({ "/system/lib" ARCH_SUFFIX "/vndk"}));
+
+  TemporaryFile tmp_file;
+  close(tmp_file.fd);
+  tmp_file.fd = -1;
+
+  android::base::WriteStringToFile(config_str, tmp_file.path);
+
+  TemporaryDir tmp_dir;
+
+  std::string executable_path = std::string(tmp_dir.path) + "/some-binary";
+  std::string version_file = std::string(tmp_dir.path) + "/.version";
+
+  auto file_guard =
+      android::base::make_scope_guard([&version_file] { unlink(version_file.c_str()); });
+
+  ASSERT_TRUE(write_version(version_file, 113U)) << strerror(errno);
+
+  // read config
+  const Config* config = nullptr;
+  std::string error_msg;
+  ASSERT_TRUE(Config::read_binary_config(tmp_file.path,
+                                         executable_path.c_str(),
+                                         is_asan,
+                                         &config,
+                                         &error_msg)) << error_msg;
+  ASSERT_TRUE(config != nullptr);
+  ASSERT_TRUE(error_msg.empty());
+
+  ASSERT_EQ(113, config->target_sdk_version());
+
+  const NamespaceConfig* default_ns_config = config->default_namespace_config();
+  ASSERT_TRUE(default_ns_config != nullptr);
+
+  ASSERT_TRUE(default_ns_config->isolated());
+  ASSERT_FALSE(default_ns_config->visible());
+  ASSERT_EQ(kExpectedDefaultSearchPath, default_ns_config->search_paths());
+  ASSERT_EQ(kExpectedDefaultPermittedPath, default_ns_config->permitted_paths());
+
+  const auto& default_ns_links = default_ns_config->links();
+  ASSERT_EQ(2U, default_ns_links.size());
+
+  ASSERT_EQ("system", default_ns_links[0].ns_name());
+  ASSERT_EQ("libc.so:libm.so:libdl.so:libstdc++.so", default_ns_links[0].shared_libs());
+  ASSERT_FALSE(default_ns_links[0].allow_all_shared_libs());
+
+  ASSERT_EQ("vndk", default_ns_links[1].ns_name());
+  ASSERT_EQ("libcutils.so:libbase.so", default_ns_links[1].shared_libs());
+  ASSERT_FALSE(default_ns_links[1].allow_all_shared_libs());
+
+  auto& ns_configs = config->namespace_configs();
+  ASSERT_EQ(3U, ns_configs.size());
+
+  // find second namespace
+  const NamespaceConfig* ns_system = nullptr;
+  const NamespaceConfig* ns_vndk = nullptr;
+  for (auto& ns : ns_configs) {
+    std::string ns_name = ns->name();
+    ASSERT_TRUE(ns_name == "system" || ns_name == "default" || ns_name == "vndk")
+        << "unexpected ns name: " << ns->name();
+
+    if (ns_name == "system") {
+      ns_system = ns.get();
+    } else if (ns_name == "vndk") {
+      ns_vndk = ns.get();
+    }
+  }
+
+  ASSERT_TRUE(ns_system != nullptr) << "system namespace was not found";
+
+  ASSERT_TRUE(ns_system->isolated());
+  ASSERT_TRUE(ns_system->visible());
+  ASSERT_EQ(kExpectedSystemSearchPath, ns_system->search_paths());
+  ASSERT_EQ(kExpectedSystemPermittedPath, ns_system->permitted_paths());
+
+  ASSERT_TRUE(ns_vndk != nullptr) << "vndk namespace was not found";
+
+  ASSERT_FALSE(ns_vndk->isolated()); // malformed bool property
+  ASSERT_FALSE(ns_vndk->visible()); // undefined bool property
+  ASSERT_EQ(kExpectedVndkSearchPath, ns_vndk->search_paths());
+
+  const auto& ns_vndk_links = ns_vndk->links();
+  ASSERT_EQ(1U, ns_vndk_links.size());
+  ASSERT_EQ("default", ns_vndk_links[0].ns_name());
+  ASSERT_TRUE(ns_vndk_links[0].allow_all_shared_libs());
+}
+
+TEST(linker_config, smoke) {
+  run_linker_config_smoke_test(false);
+}
+
+TEST(linker_config, asan_smoke) {
+  run_linker_config_smoke_test(true);
+}
+
+TEST(linker_config, ns_link_shared_libs_invalid_settings) {
+  // This unit test ensures an error is emitted when a namespace link in ld.config.txt specifies
+  // both shared_libs and allow_all_shared_libs.
+
+  static const char config_str[] =
+    "dir.test = /data/local/tmp\n"
+    "\n"
+    "[test]\n"
+    "additional.namespaces = system\n"
+    "namespace.default.links = system\n"
+    "namespace.default.link.system.shared_libs = libc.so:libm.so\n"
+    "namespace.default.link.system.allow_all_shared_libs = true\n"
+    "\n";
+
+  TemporaryFile tmp_file;
+  close(tmp_file.fd);
+  tmp_file.fd = -1;
+
+  android::base::WriteStringToFile(config_str, tmp_file.path);
+
+  TemporaryDir tmp_dir;
+
+  std::string executable_path = std::string(tmp_dir.path) + "/some-binary";
+
+  const Config* config = nullptr;
+  std::string error_msg;
+  ASSERT_FALSE(Config::read_binary_config(tmp_file.path,
+                                          executable_path.c_str(),
+                                          false,
+                                          &config,
+                                          &error_msg));
+  ASSERT_TRUE(config == nullptr);
+  ASSERT_EQ(std::string(tmp_file.path) + ":6: "
+            "error: both shared_libs and allow_all_shared_libs are set for default->system link.",
+            error_msg);
+}
+
+TEST(linker_config, dir_path_resolve) {
+  // This unit test ensures the linker resolves paths of dir.${section}
+  // properties to real path.
+
+  TemporaryDir tmp_dir;
+
+  std::string sub_dir = std::string(tmp_dir.path) + "/subdir";
+  mkdir(sub_dir.c_str(), 0755);
+
+  auto subdir_guard =
+      android::base::make_scope_guard([&sub_dir] { rmdir(sub_dir.c_str()); });
+
+  std::string symlink_path = std::string(tmp_dir.path) + "/symlink";
+  symlink(sub_dir.c_str(), symlink_path.c_str());
+
+  auto symlink_guard =
+      android::base::make_scope_guard([&symlink_path] { unlink(symlink_path.c_str()); });
+
+  std::string config_str =
+      "dir.test = " + symlink_path + "\n"
+      "\n"
+      "[test]\n";
+
+  TemporaryFile tmp_file;
+  close(tmp_file.fd);
+  tmp_file.fd = -1;
+
+  android::base::WriteStringToFile(config_str, tmp_file.path);
+
+  std::string executable_path = sub_dir + "/some-binary";
+
+  const Config* config = nullptr;
+  std::string error_msg;
+
+  ASSERT_TRUE(Config::read_binary_config(tmp_file.path,
+                                         executable_path.c_str(),
+                                         false,
+                                         &config,
+                                         &error_msg)) << error_msg;
+
+  ASSERT_TRUE(config != nullptr) << error_msg;
+  ASSERT_TRUE(error_msg.empty()) << error_msg;
+}