Copy translateSystemPathToApexPath to linker_translate_path.cpp
Bug: http://b/156397945
Test: m
Change-Id: I33f11b8a6a41475b6cdd65e1ff49b2084c33b197
diff --git a/linker/linker_translate_path.cpp b/linker/linker_translate_path.cpp
new file mode 100644
index 0000000..df7d0aa
--- /dev/null
+++ b/linker/linker_translate_path.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2020 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 "linker.h"
+#include "linker_translate_path.h"
+#include "linker_utils.h"
+
+#if defined(__LP64__)
+static const char* const kSystemLibDir = "/system/lib64";
+static const char* const kI18nApexLibDir = "/apex/com.android.i18n/lib64";
+#else
+static const char* const kSystemLibDir = "/system/lib";
+static const char* const kI18nApexLibDir = "/apex/com.android.i18n/lib";
+#endif
+
+// Workaround for dlopen(/system/lib(64)/<soname>) when .so is in /apex. http://b/121248172
+/**
+ * Translate /system path to /apex path if needed
+ * The workaround should work only when targetSdkVersion < Q.
+ *
+ * param out_name_to_apex pointing to /apex path
+ * return true if translation is needed
+ */
+bool translateSystemPathToApexPath(const char* name, std::string* out_name_to_apex) {
+ static const char* const kSystemToArtApexLibs[] = {
+ "libicuuc.so",
+ "libicui18n.so",
+ };
+ // New mapping for new apex should be added below
+
+ // Nothing to do if target sdk version is Q or above
+ if (get_application_target_sdk_version() >= 29) {
+ return false;
+ }
+
+ // If the path isn't /system/lib, there's nothing to do.
+ if (name == nullptr || dirname(name) != kSystemLibDir) {
+ return false;
+ }
+
+ const char* base_name = basename(name);
+
+ for (const char* soname : kSystemToArtApexLibs) {
+ if (strcmp(base_name, soname) == 0) {
+ *out_name_to_apex = std::string(kI18nApexLibDir) + "/" + base_name;
+ return true;
+ }
+ }
+
+ return false;
+}
+// End Workaround for dlopen(/system/lib/<soname>) when .so is in /apex.